renamed libav to libavformat

Originally committed as revision 1276 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/.cvsignore

@@ -0,0 +1,6 @@
+config.h
+config.mak
+*ffmpeg
+ffserver
+Makefile.*
+.depend

libavformat/Makefile

@@ -0,0 +1,72 @@
+#
+# libavformat Makefile
+# (c) 2000, 2001, 2002 Fabrice Bellard
+#
+include ../config.mak
+
+VPATH=$(SRC_PATH)/libav
+
+CFLAGS= $(OPTFLAGS) -Wall -g -I.. -I$(SRC_PATH) -I$(SRC_PATH)/libavcodec -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_GNU_SOURCE
+
+OBJS= utils.o cutils.o allformats.o
+
+# mux and demuxes
+OBJS+=mpeg.o mpegts.o ffm.o crc.o img.o raw.o rm.o asf.o \
+      avienc.o avidec.o wav.o swf.o au.o gif.o mov.o jpeg.o dv.o framehook.o
+# file I/O
+OBJS+= avio.o aviobuf.o file.o 
+
+ifeq ($(BUILD_STRPTIME),yes)
+OBJS+= strptime.o
+endif
+
+ifeq ($(CONFIG_VIDEO4LINUX),yes)
+OBJS+= grab.o
+endif
+
+ifeq ($(CONFIG_AUDIO_OSS),yes)
+OBJS+= audio.o 
+endif
+
+ifeq ($(CONFIG_AUDIO_BEOS),yes)
+OBJS+= beosaudio.o
+endif
+
+ifeq ($(CONFIG_NETWORK),yes)
+OBJS+= udp.o tcp.o http.o rtsp.o rtp.o rtpproto.o
+# BeOS network stuff
+ifeq ($(CONFIG_BEOS_NETSERVER),yes)
+OBJS+= barpainet.o
+endif
+endif
+
+ifeq ($(CONFIG_VORBIS),yes)
+OBJS+= ogg.o
+endif
+
+LIB= libavformat.a
+
+all: $(LIB)
+
+$(LIB): $(OBJS)
+	rm -f $@
+	$(AR) rc $@ $(OBJS)
+	$(RANLIB) $@
+
+installlib: all
+	install -m 644 $(LIB) $(prefix)/lib
+	mkdir -p $(prefix)/include/ffmpeg
+	install -m 644 $(SRC_PATH)/libav/avformat.h $(SRC_PATH)/libav/avio.h \
+                $(SRC_PATH)/libav/rtp.h $(SRC_PATH)/libav/rtsp.h \
+                $(SRC_PATH)/libav/rtspcodes.h \
+                $(prefix)/include/ffmpeg
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $< 
+
+# BeOS: remove -Wall to get rid of all the "multibyte constant" warnings
+%.o: %.cpp
+	g++ $(subst -Wall,,$(CFLAGS)) -c -o $@ $< 
+
+clean: 
+	rm -f *.o *~ *.a 

libavformat/allformats.c

@@ -0,0 +1,74 @@
+/*
+ * Register all the formats and protocols
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+/* If you do not call this function, then you can select exactly which
+   formats you want to support */
+
+/**
+ * Initialize libavcodec and register all the codecs and formats.
+ */
+void av_register_all(void)
+{
+    avcodec_init();
+    avcodec_register_all();
+
+    mpegps_init();
+    mpegts_init();
+    crc_init();
+    img_init();
+    raw_init();
+    rm_init();
+    asf_init();
+    avienc_init();
+    avidec_init();
+    wav_init();
+    swf_init();
+    au_init();
+    gif_init();
+    mov_init();
+    jpeg_init();
+    dv_init();
+    
+#ifdef CONFIG_VORBIS
+    ogg_init();
+#endif
+
+#ifndef CONFIG_WIN32
+    ffm_init();
+#endif
+#ifdef CONFIG_VIDEO4LINUX
+    video_grab_init();
+#endif
+#if defined(CONFIG_AUDIO_OSS) || defined(CONFIG_AUDIO_BEOS)
+    audio_init();
+#endif
+
+    /* file protocols */
+    register_protocol(&file_protocol);
+    register_protocol(&pipe_protocol);
+#ifdef CONFIG_NETWORK
+    rtsp_init();
+    rtp_init();
+    register_protocol(&udp_protocol);
+    register_protocol(&rtp_protocol);
+    register_protocol(&tcp_protocol);
+    register_protocol(&http_protocol);
+#endif
+}

libavformat/au.c

@@ -0,0 +1,214 @@
+/* 
+ * AU encoder and decoder
+ * Copyright (c) 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * First version by Francois Revol revol@free.fr
+ *
+ * Reference documents:
+ * http://www.opengroup.org/public/pubs/external/auformat.html
+ * http://www.goice.co.jp/member/mo/formats/au.html
+ */
+
+#include "avformat.h"
+#include "avi.h"
+
+/* if we don't know the size in advance */
+#define AU_UNKOWN_SIZE ((UINT32)(~0))
+
+/* The ffmpeg codecs we support, and the IDs they have in the file */
+static const CodecTag codec_au_tags[] = {
+    { CODEC_ID_PCM_MULAW, 1 },
+    { CODEC_ID_PCM_S16BE, 3 },
+    { CODEC_ID_PCM_ALAW, 27 },
+    { 0, 0 },
+};
+
+/* AUDIO_FILE header */
+static int put_au_header(ByteIOContext *pb, AVCodecContext *enc)
+{
+    int tag;
+
+    tag = codec_get_tag(codec_au_tags, enc->codec_id);
+    if (tag == 0)
+        return -1;
+    put_tag(pb, ".snd");       /* magic number */
+    put_be32(pb, 24);           /* header size */
+    put_be32(pb, AU_UNKOWN_SIZE); /* data size */
+    put_be32(pb, (UINT32)tag);     /* codec ID */
+    put_be32(pb, enc->sample_rate);
+    put_be32(pb, (UINT32)enc->channels);
+    return 0;
+}
+
+static int au_write_header(AVFormatContext *s)
+{
+    ByteIOContext *pb = &s->pb;
+
+    s->priv_data = NULL;
+
+    /* format header */
+    if (put_au_header(pb, &s->streams[0]->codec) < 0) {
+        return -1;
+    }
+
+    put_flush_packet(pb);
+
+    return 0;
+}
+
+static int au_write_packet(AVFormatContext *s, int stream_index_ptr,
+                           UINT8 *buf, int size, int force_pts)
+{
+    ByteIOContext *pb = &s->pb;
+    put_buffer(pb, buf, size);
+    return 0;
+}
+
+static int au_write_trailer(AVFormatContext *s)
+{
+    ByteIOContext *pb = &s->pb;
+    offset_t file_size;
+
+    if (!url_is_streamed(&s->pb)) {
+
+        /* update file size */
+        file_size = url_ftell(pb);
+        url_fseek(pb, 8, SEEK_SET);
+        put_be32(pb, (UINT32)(file_size - 24));
+        url_fseek(pb, file_size, SEEK_SET);
+
+        put_flush_packet(pb);
+    }
+
+    return 0;
+}
+
+static int au_probe(AVProbeData *p)
+{
+    /* check file header */
+    if (p->buf_size <= 24)
+        return 0;
+    if (p->buf[0] == '.' && p->buf[1] == 's' &&
+        p->buf[2] == 'n' && p->buf[3] == 'd')
+        return AVPROBE_SCORE_MAX;
+    else
+        return 0;
+}
+
+/* au input */
+static int au_read_header(AVFormatContext *s,
+                           AVFormatParameters *ap)
+{
+    int size;
+    unsigned int tag;
+    ByteIOContext *pb = &s->pb;
+    unsigned int id, codec, channels, rate;
+    AVStream *st;
+
+    /* check ".snd" header */
+    tag = get_le32(pb);
+    if (tag != MKTAG('.', 's', 'n', 'd'))
+        return -1;
+    size = get_be32(pb); /* header size */
+    get_be32(pb); /* data size */
+    
+    id = get_be32(pb);
+    rate = get_be32(pb);
+    channels = get_be32(pb);
+    
+    codec = codec_get_id(codec_au_tags, id);
+
+    if (size >= 24) {
+        /* skip unused data */
+        url_fseek(pb, size - 24, SEEK_CUR);
+    }
+
+    /* now we are ready: build format streams */
+    st = av_malloc(sizeof(AVStream));
+    if (!st)
+        return -1;
+    s->nb_streams = 1;
+    s->streams[0] = st;
+
+    st->id = 0;
+    
+    st->codec.codec_type = CODEC_TYPE_AUDIO;
+    st->codec.codec_tag = id;
+    st->codec.codec_id = codec;
+    st->codec.channels = channels;
+    st->codec.sample_rate = rate;
+    return 0;
+}
+
+#define MAX_SIZE 4096
+
+static int au_read_packet(AVFormatContext *s,
+                          AVPacket *pkt)
+{
+    int ret;
+
+    if (url_feof(&s->pb))
+        return -EIO;
+    if (av_new_packet(pkt, MAX_SIZE))
+        return -EIO;
+    pkt->stream_index = 0;
+
+    ret = get_buffer(&s->pb, pkt->data, pkt->size);
+    if (ret < 0)
+        av_free_packet(pkt);
+    /* note: we need to modify the packet size here to handle the last
+       packet */
+    pkt->size = ret;
+    return 0;
+}
+
+static int au_read_close(AVFormatContext *s)
+{
+    return 0;
+}
+
+static AVInputFormat au_iformat = {
+    "au",
+    "SUN AU Format",
+    0,
+    au_probe,
+    au_read_header,
+    au_read_packet,
+    au_read_close,
+};
+
+static AVOutputFormat au_oformat = {
+    "au",
+    "SUN AU Format",
+    "audio/basic",
+    "au",
+    0,
+    CODEC_ID_PCM_S16BE,
+    CODEC_ID_NONE,
+    au_write_header,
+    au_write_packet,
+    au_write_trailer,
+};
+
+int au_init(void)
+{
+    av_register_input_format(&au_iformat);
+    av_register_output_format(&au_oformat);
+    return 0;
+}

libavformat/audio.c

@@ -0,0 +1,330 @@
+/*
+ * Linux audio play and grab interface
+ * Copyright (c) 2000, 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/soundcard.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+
+const char *audio_device = "/dev/dsp";
+
+#define AUDIO_BLOCK_SIZE 4096
+
+typedef struct {
+    int fd;
+    int sample_rate;
+    int channels;
+    int frame_size; /* in bytes ! */
+    int codec_id;
+    int flip_left : 1;
+    UINT8 buffer[AUDIO_BLOCK_SIZE];
+    int buffer_ptr;
+} AudioData;
+
+static int audio_open(AudioData *s, int is_output)
+{
+    int audio_fd;
+    int tmp, err;
+    char *flip = getenv("AUDIO_FLIP_LEFT");
+
+    /* open linux audio device */
+    if (is_output)
+        audio_fd = open(audio_device, O_WRONLY);
+    else
+        audio_fd = open(audio_device, O_RDONLY);
+    if (audio_fd < 0) {
+        perror(audio_device);
+        return -EIO;
+    }
+
+    if (flip && *flip == '1') {
+        s->flip_left = 1;
+    }
+
+    /* non blocking mode */
+    if (!is_output)
+        fcntl(audio_fd, F_SETFL, O_NONBLOCK);
+
+    s->frame_size = AUDIO_BLOCK_SIZE;
+#if 0
+    tmp = (NB_FRAGMENTS << 16) | FRAGMENT_BITS;
+    err = ioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &tmp);
+    if (err < 0) {
+        perror("SNDCTL_DSP_SETFRAGMENT");
+    }
+#endif
+
+    /* select format : favour native format */
+    err = ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &tmp);
+    
+#ifdef WORDS_BIGENDIAN
+    if (tmp & AFMT_S16_BE) {
+        tmp = AFMT_S16_BE;
+    } else if (tmp & AFMT_S16_LE) {
+        tmp = AFMT_S16_LE;
+    } else {
+        tmp = 0;
+    }
+#else
+    if (tmp & AFMT_S16_LE) {
+        tmp = AFMT_S16_LE;
+    } else if (tmp & AFMT_S16_BE) {
+        tmp = AFMT_S16_BE;
+    } else {
+        tmp = 0;
+    }
+#endif
+
+    switch(tmp) {
+    case AFMT_S16_LE:
+        s->codec_id = CODEC_ID_PCM_S16LE;
+        break;
+    case AFMT_S16_BE:
+        s->codec_id = CODEC_ID_PCM_S16BE;
+        break;
+    default:
+        fprintf(stderr, "Soundcard does not support 16 bit sample format\n");
+        close(audio_fd);
+        return -EIO;
+    }
+    err=ioctl(audio_fd, SNDCTL_DSP_SETFMT, &tmp);
+    if (err < 0) {
+        perror("SNDCTL_DSP_SETFMT");
+        goto fail;
+    }
+    
+    tmp = (s->channels == 2);
+    err = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp);
+    if (err < 0) {
+        perror("SNDCTL_DSP_STEREO");
+        goto fail;
+    }
+    if (tmp)
+        s->channels = 2;
+    
+    tmp = s->sample_rate;
+    err = ioctl(audio_fd, SNDCTL_DSP_SPEED, &tmp);
+    if (err < 0) {
+        perror("SNDCTL_DSP_SPEED");
+        goto fail;
+    }
+    s->sample_rate = tmp; /* store real sample rate */
+    s->fd = audio_fd;
+
+    return 0;
+ fail:
+    close(audio_fd);
+    return -EIO;
+}
+
+static int audio_close(AudioData *s)
+{
+    close(s->fd);
+    return 0;
+}
+
+/* sound output support */
+static int audio_write_header(AVFormatContext *s1)
+{
+    AudioData *s = s1->priv_data;
+    AVStream *st;
+    int ret;
+
+    st = s1->streams[0];
+    s->sample_rate = st->codec.sample_rate;
+    s->channels = st->codec.channels;
+    ret = audio_open(s, 1);
+    if (ret < 0) {
+        return -EIO;
+    } else {
+        return 0;
+    }
+}
+
+static int audio_write_packet(AVFormatContext *s1, int stream_index,
+                              UINT8 *buf, int size, int force_pts)
+{
+    AudioData *s = s1->priv_data;
+    int len, ret;
+
+    while (size > 0) {
+        len = AUDIO_BLOCK_SIZE - s->buffer_ptr;
+        if (len > size)
+            len = size;
+        memcpy(s->buffer + s->buffer_ptr, buf, len);
+        s->buffer_ptr += len;
+        if (s->buffer_ptr >= AUDIO_BLOCK_SIZE) {
+            for(;;) {
+                ret = write(s->fd, s->buffer, AUDIO_BLOCK_SIZE);
+                if (ret > 0)
+                    break;
+                if (ret < 0 && (errno != EAGAIN && errno != EINTR))
+                    return -EIO;
+            }
+            s->buffer_ptr = 0;
+        }
+        buf += len;
+        size -= len;
+    }
+    return 0;
+}
+
+static int audio_write_trailer(AVFormatContext *s1)
+{
+    AudioData *s = s1->priv_data;
+
+    audio_close(s);
+    return 0;
+}
+
+/* grab support */
+
+static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap)
+{
+    AudioData *s = s1->priv_data;
+    AVStream *st;
+    int ret;
+
+    if (!ap || ap->sample_rate <= 0 || ap->channels <= 0)
+        return -1;
+
+    st = av_new_stream(s1, 0);
+    if (!st) {
+        return -ENOMEM;
+    }
+    s->sample_rate = ap->sample_rate;
+    s->channels = ap->channels;
+
+    ret = audio_open(s, 0);
+    if (ret < 0) {
+        av_free(st);
+        return -EIO;
+    }
+
+    /* take real parameters */
+    st->codec.codec_type = CODEC_TYPE_AUDIO;
+    st->codec.codec_id = s->codec_id;
+    st->codec.sample_rate = s->sample_rate;
+    st->codec.channels = s->channels;
+
+    av_set_pts_info(s1, 48, 1, 1000000);  /* 48 bits pts in us */
+    return 0;
+}
+
+static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    AudioData *s = s1->priv_data;
+    int ret, bdelay;
+    int64_t cur_time;
+    struct audio_buf_info abufi;
+    
+    if (av_new_packet(pkt, s->frame_size) < 0)
+        return -EIO;
+    for(;;) {
+        ret = read(s->fd, pkt->data, pkt->size);
+        if (ret > 0)
+            break;
+        if (ret == -1 && (errno == EAGAIN || errno == EINTR)) {
+            av_free_packet(pkt);
+            pkt->size = 0;
+            return 0;
+        }
+        if (!(ret == 0 || (ret == -1 && (errno == EAGAIN || errno == EINTR)))) {
+            av_free_packet(pkt);
+            return -EIO;
+        }
+    }
+    pkt->size = ret;
+
+    /* compute pts of the start of the packet */
+    cur_time = av_gettime();
+    bdelay = ret;
+    if (ioctl(s->fd, SNDCTL_DSP_GETISPACE, &abufi) == 0) {
+        bdelay += abufi.bytes;
+    }
+    /* substract time represented by the number of bytes in the audio fifo */
+    cur_time -= (bdelay * 1000000LL) / (s->sample_rate * s->channels);
+
+    /* convert to wanted units */
+    pkt->pts = cur_time & ((1LL << 48) - 1);
+
+    if (s->flip_left && s->channels == 2) {
+        int i;
+        short *p = (short *) pkt->data;
+
+        for (i = 0; i < ret; i += 4) {
+            *p = ~*p;
+            p += 2;
+        }
+    }
+    return 0;
+}
+
+static int audio_read_close(AVFormatContext *s1)
+{
+    AudioData *s = s1->priv_data;
+
+    audio_close(s);
+    return 0;
+}
+
+static AVInputFormat audio_in_format = {
+    "audio_device",
+    "audio grab and output",
+    sizeof(AudioData),
+    NULL,
+    audio_read_header,
+    audio_read_packet,
+    audio_read_close,
+    .flags = AVFMT_NOFILE,
+};
+
+static AVOutputFormat audio_out_format = {
+    "audio_device",
+    "audio grab and output",
+    "",
+    "",
+    sizeof(AudioData),
+    /* XXX: we make the assumption that the soundcard accepts this format */
+    /* XXX: find better solution with "preinit" method, needed also in
+       other formats */
+#ifdef WORDS_BIGENDIAN
+    CODEC_ID_PCM_S16BE,
+#else
+    CODEC_ID_PCM_S16LE,
+#endif
+    CODEC_ID_NONE,
+    audio_write_header,
+    audio_write_packet,
+    audio_write_trailer,
+    .flags = AVFMT_NOFILE,
+};
+
+int audio_init(void)
+{
+    av_register_input_format(&audio_in_format);
+    av_register_output_format(&audio_out_format);
+    return 0;
+}

libavformat/avformat.h

@@ -0,0 +1,351 @@
+#ifndef AVFORMAT_H
+#define AVFORMAT_H
+
+#define LIBAVFORMAT_VERSION_INT 0x000406  
+#define LIBAVFORMAT_VERSION     "0.4.6"
+#define LIBAVFORMAT_BUILD       4602
+
+#include "avcodec.h"
+
+#include "avio.h"
+
+/* packet functions */
+
+#define AV_NOPTS_VALUE 0
+
+typedef struct AVPacket {
+    INT64 pts; /* presentation time stamp in stream units (set av_set_pts_info) */
+    UINT8 *data;
+    int size;
+    int stream_index;
+    int flags;
+    int duration;       
+#define PKT_FLAG_KEY   0x0001
+} AVPacket; 
+
+int av_new_packet(AVPacket *pkt, int size);
+void av_free_packet(AVPacket *pkt);
+
+/*************************************************/
+/* fractional numbers for exact pts handling */
+
+/* the exact value of the fractional number is: 'val + num / den'. num
+   is assumed to be such as 0 <= num < den */
+typedef struct AVFrac {
+    INT64 val, num, den; 
+} AVFrac;
+
+void av_frac_init(AVFrac *f, INT64 val, INT64 num, INT64 den);
+void av_frac_add(AVFrac *f, INT64 incr);
+void av_frac_set(AVFrac *f, INT64 val);
+
+/*************************************************/
+/* input/output formats */
+
+struct AVFormatContext;
+
+/* this structure contains the data a format has to probe a file */
+typedef struct AVProbeData {
+    char *filename;
+    unsigned char *buf;
+    int buf_size;
+} AVProbeData;
+
+#define AVPROBE_SCORE_MAX 100
+
+typedef struct AVFormatParameters {
+    int frame_rate;
+    int sample_rate;
+    int channels;
+    int width;
+    int height;
+    enum PixelFormat pix_fmt;
+} AVFormatParameters;
+
+#define AVFMT_NOFILE        0x0001 /* no file should be opened */
+#define AVFMT_NEEDNUMBER    0x0002 /* needs '%d' in filename */ 
+#define AVFMT_NOHEADER      0x0004 /* signal that no header is present
+                                      (streams are added dynamically) */
+#define AVFMT_SHOW_IDS      0x0008 /* show format stream IDs numbers */
+#define AVFMT_RGB24         0x0010 /* force RGB24 output for ppm (hack
+                                      - need better api) */
+#define AVFMT_RAWPICTURE    0x0020 /* format wants AVPicture structure for
+                                      raw picture data */
+
+typedef struct AVOutputFormat {
+    const char *name;
+    const char *long_name;
+    const char *mime_type;
+    const char *extensions; /* comma separated extensions */
+    /* size of private data so that it can be allocated in the wrapper */
+    int priv_data_size;
+    /* output support */
+    enum CodecID audio_codec; /* default audio codec */
+    enum CodecID video_codec; /* default video codec */
+    int (*write_header)(struct AVFormatContext *);
+    /* XXX: change prototype for 64 bit pts */
+    int (*write_packet)(struct AVFormatContext *, 
+                        int stream_index,
+                        unsigned char *buf, int size, int force_pts);
+    int (*write_trailer)(struct AVFormatContext *);
+    /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
+    int flags;
+    /* private fields */
+    struct AVOutputFormat *next;
+} AVOutputFormat;
+
+typedef struct AVInputFormat {
+    const char *name;
+    const char *long_name;
+    /* size of private data so that it can be allocated in the wrapper */
+    int priv_data_size;
+    /* tell if a given file has a chance of being parsing by this format */
+    int (*read_probe)(AVProbeData *);
+    /* read the format header and initialize the AVFormatContext
+       structure. Return 0 if OK. 'ap' if non NULL contains
+       additionnal paramters. Only used in raw format right
+       now. 'av_new_stream' should be called to create new streams.  */
+    int (*read_header)(struct AVFormatContext *,
+                       AVFormatParameters *ap);
+    /* read one packet and put it in 'pkt'. pts and flags are also
+       set. 'av_new_stream' can be called only if the flag
+       AVFMT_NOHEADER is used. */
+    int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
+    /* close the stream. The AVFormatContext and AVStreams are not
+       freed by this function */
+    int (*read_close)(struct AVFormatContext *);
+    /* seek at or before a given pts (given in microsecond). The pts
+       origin is defined by the stream */
+    int (*read_seek)(struct AVFormatContext *, INT64 pts);
+    /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_NOHEADER */
+    int flags;
+    /* if extensions are defined, then no probe is done. You should
+       usually not use extension format guessing because it is not
+       reliable enough */
+    const char *extensions;
+    /* general purpose read only value that the format can use */
+    int value;
+    /* private fields */
+    struct AVInputFormat *next;
+} AVInputFormat;
+
+typedef struct AVStream {
+    int index;    /* stream index in AVFormatContext */
+    int id;       /* format specific stream id */
+    AVCodecContext codec; /* codec context */
+    int r_frame_rate;     /* real frame rate of the stream */
+    uint64_t time_length; /* real length of the stream in miliseconds */
+    void *priv_data;
+    /* internal data used in av_find_stream_info() */
+    int codec_info_state;     
+    int codec_info_nb_repeat_frames;
+    int codec_info_nb_real_frames;
+    /* PTS generation when outputing stream */
+    AVFrac pts;
+    /* ffmpeg.c private use */
+    int stream_copy; /* if TRUE, just copy stream */
+} AVStream;
+
+#define MAX_STREAMS 20
+
+/* format I/O context */
+typedef struct AVFormatContext {
+    /* can only be iformat or oformat, not both at the same time */
+    struct AVInputFormat *iformat;
+    struct AVOutputFormat *oformat;
+    void *priv_data;
+    ByteIOContext pb;
+    int nb_streams;
+    AVStream *streams[MAX_STREAMS];
+    char filename[1024]; /* input or output filename */
+    /* stream info */
+    char title[512];
+    char author[512];
+    char copyright[512];
+    char comment[512];
+    int flags; /* format specific flags */
+    /* private data for pts handling (do not modify directly) */
+    int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
+    int pts_num, pts_den; /* value to convert to seconds */
+    /* This buffer is only needed when packets were already buffered but
+       not decoded, for example to get the codec parameters in mpeg
+       streams */
+   struct AVPacketList *packet_buffer;
+} AVFormatContext;
+
+typedef struct AVPacketList {
+    AVPacket pkt;
+    struct AVPacketList *next;
+} AVPacketList;
+
+extern AVInputFormat *first_iformat;
+extern AVOutputFormat *first_oformat;
+
+/* XXX: use automatic init with either ELF sections or C file parser */
+/* modules */
+
+/* mpeg.c */
+int mpegps_init(void);
+
+/* mpegts.c */
+extern AVInputFormat mpegts_demux;
+int mpegts_init(void);
+
+/* rm.c */
+int rm_init(void);
+
+/* crc.c */
+int crc_init(void);
+
+/* img.c */
+int img_init(void);
+
+/* asf.c */
+int asf_init(void);
+
+/* avienc.c */
+int avienc_init(void);
+
+/* avidec.c */
+int avidec_init(void);
+
+/* swf.c */
+int swf_init(void);
+
+/* mov.c */
+int mov_init(void);
+
+/* jpeg.c */
+int jpeg_init(void);
+
+/* gif.c */
+int gif_init(void);
+
+/* au.c */
+int au_init(void);
+
+/* wav.c */
+int wav_init(void);
+
+/* raw.c */
+int raw_init(void);
+
+/* ogg.c */
+int ogg_init(void);
+
+/* dv.c */
+int dv_init(void);
+
+/* ffm.c */
+int ffm_init(void);
+
+/* rtsp.c */
+extern AVInputFormat redir_demux;
+int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
+
+#include "rtp.h"
+
+#include "rtsp.h"
+
+/* utils.c */
+#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
+#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
+
+void av_register_input_format(AVInputFormat *format);
+void av_register_output_format(AVOutputFormat *format);
+AVOutputFormat *guess_stream_format(const char *short_name, 
+                                    const char *filename, const char *mime_type);
+AVOutputFormat *guess_format(const char *short_name, 
+                             const char *filename, const char *mime_type);
+
+void av_hex_dump(UINT8 *buf, int size);
+
+void av_register_all(void);
+
+typedef struct FifoBuffer {
+    UINT8 *buffer;
+    UINT8 *rptr, *wptr, *end;
+} FifoBuffer;
+
+int fifo_init(FifoBuffer *f, int size);
+void fifo_free(FifoBuffer *f);
+int fifo_size(FifoBuffer *f, UINT8 *rptr);
+int fifo_read(FifoBuffer *f, UINT8 *buf, int buf_size, UINT8 **rptr_ptr);
+void fifo_write(FifoBuffer *f, UINT8 *buf, int size, UINT8 **wptr_ptr);
+
+/* media file input */
+AVInputFormat *av_find_input_format(const char *short_name);
+AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
+int av_open_input_file(AVFormatContext **ic_ptr, const char *filename, 
+                       AVInputFormat *fmt,
+                       int buf_size,
+                       AVFormatParameters *ap);
+
+#define AVERROR_UNKNOWN     (-1)  /* unknown error */
+#define AVERROR_IO          (-2)  /* i/o error */
+#define AVERROR_NUMEXPECTED (-3)  /* number syntax expected in filename */
+#define AVERROR_INVALIDDATA (-4)  /* invalid data found */
+#define AVERROR_NOMEM       (-5)  /* not enough memory */
+#define AVERROR_NOFMT       (-6)  /* unknown format */
+
+int av_find_stream_info(AVFormatContext *ic);
+int av_read_packet(AVFormatContext *s, AVPacket *pkt);
+void av_close_input_file(AVFormatContext *s);
+AVStream *av_new_stream(AVFormatContext *s, int id);
+void av_set_pts_info(AVFormatContext *s, int pts_wrap_bits,
+                     int pts_num, int pts_den);
+
+/* media file output */
+int av_write_header(AVFormatContext *s);
+int av_write_frame(AVFormatContext *s, int stream_index, const uint8_t *buf, 
+                   int size);
+int av_write_trailer(AVFormatContext *s);
+
+void dump_format(AVFormatContext *ic,
+                 int index, 
+                 const char *url,
+                 int is_output);
+int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
+INT64 parse_date(const char *datestr, int duration);
+
+INT64 av_gettime(void);
+
+/* ffm specific for ffserver */
+#define FFM_PACKET_SIZE 4096
+offset_t ffm_read_write_index(int fd);
+void ffm_write_write_index(int fd, offset_t pos);
+void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
+
+int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
+
+int get_frame_filename(char *buf, int buf_size,
+                       const char *path, int number);
+int filename_number_test(const char *filename);
+
+/* grab specific */
+int video_grab_init(void);
+int audio_init(void);
+
+extern const char *v4l_device;
+extern const char *audio_device;
+
+#ifdef HAVE_AV_CONFIG_H
+int strstart(const char *str, const char *val, const char **ptr);
+int stristart(const char *str, const char *val, const char **ptr);
+void pstrcpy(char *buf, int buf_size, const char *str);
+char *pstrcat(char *buf, int buf_size, const char *s);
+
+struct in_addr;
+int resolve_host(struct in_addr *sin_addr, const char *hostname);
+
+void url_split(char *proto, int proto_size,
+               char *hostname, int hostname_size,
+               int *port_ptr,
+               char *path, int path_size,
+               const char *url);
+
+int match_ext(const char *filename, const char *extensions);
+
+#endif /* HAVE_AV_CONFIG_H */
+
+#endif /* AVFORMAT_H */

libavformat/avi.h

@@ -0,0 +1,28 @@
+
+#define AVIF_HASINDEX		0x00000010	// Index at end of file?
+#define AVIF_MUSTUSEINDEX	0x00000020
+#define AVIF_ISINTERLEAVED	0x00000100
+#define AVIF_TRUSTCKTYPE	0x00000800	// Use CKType to find key frames?
+#define AVIF_WASCAPTUREFILE	0x00010000
+#define AVIF_COPYRIGHTED	0x00020000
+
+offset_t start_tag(ByteIOContext *pb, const char *tag);
+void end_tag(ByteIOContext *pb, offset_t start);
+
+typedef struct CodecTag {
+    int id;
+    unsigned int tag;
+    unsigned int invalid_asf : 1;
+} CodecTag;
+
+void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf);
+int put_wav_header(ByteIOContext *pb, AVCodecContext *enc);
+int wav_codec_get_id(unsigned int tag, int bps);
+void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, 
+                    int has_extra_data);
+
+extern const CodecTag codec_bmp_tags[];
+extern const CodecTag codec_wav_tags[];
+
+unsigned int codec_get_tag(const CodecTag *tags, int id);
+int codec_get_id(const CodecTag *tags, unsigned int tag);

libavformat/avidec.c

@@ -0,0 +1,256 @@
+/*
+ * AVI decoder.
+ * Copyright (c) 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include "avi.h"
+
+//#define DEBUG
+
+typedef struct AVIIndex {
+    unsigned char tag[4];
+    unsigned int flags, pos, len;
+    struct AVIIndex *next;
+} AVIIndex;
+
+typedef struct {
+    INT64 movi_end;
+    offset_t movi_list;
+    AVIIndex *first, *last;
+} AVIContext;
+
+#ifdef DEBUG
+static void print_tag(const char *str, unsigned int tag, int size)
+{
+    printf("%s: tag=%c%c%c%c size=0x%x\n",
+           str, tag & 0xff,
+           (tag >> 8) & 0xff,
+           (tag >> 16) & 0xff,
+           (tag >> 24) & 0xff,
+           size);
+}
+#endif
+
+static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+    AVIContext *avi = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    UINT32 tag, tag1;
+    int codec_type, stream_index, size, frame_period, bit_rate;
+    int i;
+    AVStream *st;
+
+    /* check RIFF header */
+    tag = get_le32(pb);
+
+    if (tag != MKTAG('R', 'I', 'F', 'F'))
+        return -1;
+    get_le32(pb); /* file size */
+    tag = get_le32(pb);
+    if (tag != MKTAG('A', 'V', 'I', ' '))
+        return -1;
+
+    /* first list tag */
+    stream_index = -1;
+    codec_type = -1;
+    frame_period = 0;
+    for(;;) {
+        if (url_feof(pb))
+            goto fail;
+        tag = get_le32(pb);
+        size = get_le32(pb);
+#ifdef DEBUG
+        print_tag("tag", tag, size);
+#endif
+
+        switch(tag) {
+        case MKTAG('L', 'I', 'S', 'T'):
+            /* ignored, except when start of video packets */
+            tag1 = get_le32(pb);
+#ifdef DEBUG
+            print_tag("list", tag1, 0);
+#endif
+            if (tag1 == MKTAG('m', 'o', 'v', 'i')) {
+                avi->movi_end = url_ftell(pb) + size - 4;
+#ifdef DEBUG
+                printf("movi end=%Lx\n", avi->movi_end);
+#endif
+                goto end_of_header;
+            }
+            break;
+        case MKTAG('a', 'v', 'i', 'h'):
+	    /* avi header */
+            /* using frame_period is bad idea */
+            frame_period = get_le32(pb);
+            bit_rate = get_le32(pb) * 8;
+	    url_fskip(pb, 4 * 4);
+            s->nb_streams = get_le32(pb);
+            for(i=0;i<s->nb_streams;i++) {
+                AVStream *st = av_mallocz(sizeof(AVStream));
+                if (!st)
+                    goto fail;
+                s->streams[i] = st;
+	    }
+            url_fskip(pb, size - 7 * 4);
+            break;
+        case MKTAG('s', 't', 'r', 'h'):
+            /* stream header */
+            stream_index++;
+            tag1 = get_le32(pb);
+            switch(tag1) {
+            case MKTAG('v', 'i', 'd', 's'):
+                codec_type = CODEC_TYPE_VIDEO;
+                get_le32(pb); /* codec tag */
+                get_le32(pb); /* flags */
+                get_le16(pb); /* priority */
+                get_le16(pb); /* language */
+                get_le32(pb); /* XXX: initial frame ? */
+                get_le32(pb); /* scale */
+                get_le32(pb); /* rate */
+                size -= 6 * 4;
+                break;
+            case MKTAG('a', 'u', 'd', 's'):
+                codec_type = CODEC_TYPE_AUDIO;
+                /* nothing really useful */
+            }
+	    url_fskip(pb, size - 4);
+            break;
+        case MKTAG('s', 't', 'r', 'f'):
+            /* stream header */
+            if (stream_index >= s->nb_streams) {
+                url_fskip(pb, size);
+            } else {
+                st = s->streams[stream_index];
+                switch(codec_type) {
+                case CODEC_TYPE_VIDEO:
+                    get_le32(pb); /* size */
+                    st->codec.width = get_le32(pb);
+                    st->codec.height = get_le32(pb);
+                    if (frame_period)
+                        st->codec.frame_rate = (INT64_C(1000000) * FRAME_RATE_BASE) / frame_period;
+                    else
+                        st->codec.frame_rate = 25 * FRAME_RATE_BASE;
+                    get_le16(pb); /* panes */
+                    get_le16(pb); /* depth */
+                    tag1 = get_le32(pb);
+#ifdef DEBUG
+                    print_tag("video", tag1, 0);
+#endif
+                    st->codec.codec_type = CODEC_TYPE_VIDEO;
+                    st->codec.codec_tag = tag1;
+                    st->codec.codec_id = codec_get_id(codec_bmp_tags, tag1);
+                    url_fskip(pb, size - 5 * 4);
+                    break;
+		case CODEC_TYPE_AUDIO:
+                    get_wav_header(pb, &st->codec, (size >= 18));
+                    break;
+                default:
+                    url_fskip(pb, size);
+                    break;
+                }
+            }
+            break;
+        default:
+            /* skip tag */
+            size += (size & 1);
+            url_fskip(pb, size);
+            break;
+        }
+    }
+ end_of_header:
+    /* check stream number */
+    if (stream_index != s->nb_streams - 1) {
+    fail:
+        for(i=0;i<s->nb_streams;i++) {
+            av_freep(&s->streams[i]);
+        }
+        return -1;
+    }
+
+    return 0;
+}
+
+static int avi_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    AVIContext *avi = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    int n, d1, d2, size;
+
+    for(;;) {
+	if (url_feof(pb) || url_ftell(pb) >= avi->movi_end)
+	    return -1;
+	d1 = get_byte(pb) - '0';
+	d2 = get_byte(pb) - '0';
+	if (d1 < 0 || d1 > 9 || d2 < 0 || d2 > 9)
+	    continue;
+
+	n = d1 * 10 + d2;
+	if (n < 0 || n >= s->nb_streams)
+	    continue;
+
+	d1 = get_byte(pb);
+	d2 = get_byte(pb);
+	if ((d1 == 'd' && d2 == 'c')
+	    || (d1 == 'w' && d2 == 'b'))
+	    break;
+    }
+    size = get_le32(pb);
+    av_new_packet(pkt, size);
+    pkt->stream_index = n;
+
+    get_buffer(pb, pkt->data, pkt->size);
+
+    if (size & 1)
+        get_byte(pb);
+
+    return 0;
+}
+
+static int avi_read_close(AVFormatContext *s)
+{
+    return 0;
+}
+
+static int avi_probe(AVProbeData *p)
+{
+    /* check file header */
+    if (p->buf_size <= 32)
+        return 0;
+    if (p->buf[0] == 'R' && p->buf[1] == 'I' &&
+        p->buf[2] == 'F' && p->buf[3] == 'F' &&
+        p->buf[8] == 'A' && p->buf[9] == 'V' &&
+        p->buf[10] == 'I' && p->buf[11] == ' ')
+        return AVPROBE_SCORE_MAX;
+    else
+        return 0;
+}
+
+static AVInputFormat avi_iformat = {
+    "avi",
+    "avi format",
+    sizeof(AVIContext),
+    avi_probe,
+    avi_read_header,
+    avi_read_packet,
+    avi_read_close,
+};
+
+int avidec_init(void)
+{
+    av_register_input_format(&avi_iformat);
+    return 0;
+}

libavformat/avienc.c

@@ -0,0 +1,432 @@
+/*
+ * AVI encoder.
+ * Copyright (c) 2000 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include "avi.h"
+
+/*
+ * TODO: 
+ *  - fill all fields if non streamed (nb_frames for example)
+ */
+
+typedef struct AVIIndex {
+    unsigned char tag[4];
+    unsigned int flags, pos, len;
+    struct AVIIndex *next;
+} AVIIndex;
+
+typedef struct {
+    offset_t movi_list, frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
+    int audio_strm_length[MAX_STREAMS];
+    AVIIndex *first, *last;
+} AVIContext;
+
+offset_t start_tag(ByteIOContext *pb, const char *tag)
+{
+    put_tag(pb, tag);
+    put_le32(pb, 0);
+    return url_ftell(pb);
+}
+
+void end_tag(ByteIOContext *pb, offset_t start)
+{
+    offset_t pos;
+
+    pos = url_ftell(pb);
+    url_fseek(pb, start - 4, SEEK_SET);
+    put_le32(pb, (UINT32)(pos - start));
+    url_fseek(pb, pos, SEEK_SET);
+}
+
+/* Note: when encoding, the first matching tag is used, so order is
+   important if multiple tags possible for a given codec. */
+const CodecTag codec_bmp_tags[] = {
+    { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
+    { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
+    { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
+    { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
+    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },
+    { CODEC_ID_MPEG4, MKTAG('d', 'i', 'v', 'x'), .invalid_asf = 1 },
+    { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },
+    { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },
+    { CODEC_ID_MPEG4, MKTAG('x', 'v', 'i', 'd'), .invalid_asf = 1 },
+    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 's'), .invalid_asf = 1 },
+    { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
+    { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
+    { CODEC_ID_MPEG4, MKTAG('m', '4', 's', '2') },
+    { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
+    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
+    { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '3'), .invalid_asf = 1 },
+    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, 
+    { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') }, 
+    { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') }, 
+    { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') }, 
+    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') }, 
+    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') }, 
+    { CODEC_ID_DVVIDEO, MKTAG('D', 'V', 'S', 'D') }, 
+    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') }, 
+    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') }, 
+    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') }, 
+    { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') }, 
+    { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
+    { 0, 0 },
+};
+
+unsigned int codec_get_tag(const CodecTag *tags, int id)
+{
+    while (tags->id != 0) {
+        if (tags->id == id)
+            return tags->tag;
+        tags++;
+    }
+    return 0;
+}
+
+static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
+{
+    while (tags->id != 0) {
+        if (!tags->invalid_asf && tags->id == id)
+            return tags->tag;
+        tags++;
+    }
+    return 0;
+}
+
+int codec_get_id(const CodecTag *tags, unsigned int tag)
+{
+    while (tags->id != 0) {
+        if (tags->tag == tag)
+            return tags->id;
+        tags++;
+    }
+    return 0;
+}
+
+unsigned int codec_get_bmp_tag(int id)
+{
+    return codec_get_tag(codec_bmp_tags, id);
+}
+
+/* BITMAPINFOHEADER header */
+void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
+{
+    put_le32(pb, 40); /* size */
+    put_le32(pb, enc->width);
+    put_le32(pb, enc->height);
+    put_le16(pb, 1); /* planes */
+    put_le16(pb, 24); /* depth */
+    /* compression type */
+    put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : codec_get_tag(tags, enc->codec_id));
+    put_le32(pb, enc->width * enc->height * 3);
+    put_le32(pb, 0);
+    put_le32(pb, 0);
+    put_le32(pb, 0);
+    put_le32(pb, 0);
+}
+
+static void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)
+{
+    switch(stream->codec_id) {
+    case CODEC_ID_PCM_S16LE:
+       *au_scale = *au_ssize = 2*stream->channels;
+       *au_byterate = *au_ssize * stream->sample_rate;
+        break;
+    case CODEC_ID_PCM_U8:
+    case CODEC_ID_PCM_ALAW:
+    case CODEC_ID_PCM_MULAW:
+        *au_scale = *au_ssize = stream->channels;
+        *au_byterate = *au_ssize * stream->sample_rate;
+        break;
+    case CODEC_ID_MP2:
+        *au_ssize = 1;
+        *au_scale = 1;
+        *au_byterate = stream->bit_rate / 8;
+    case CODEC_ID_MP3LAME:
+        *au_ssize = 1;
+        *au_scale = 1;
+        *au_byterate = stream->bit_rate / 8;    
+    default:
+        *au_ssize = 1;
+        *au_scale = 1; 
+        *au_byterate = stream->bit_rate / 8;
+        break;
+    }
+}
+
+static int avi_write_header(AVFormatContext *s)
+{
+    AVIContext *avi = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
+    AVCodecContext *stream, *video_enc;
+    offset_t list1, list2, strh, strf;
+
+    put_tag(pb, "RIFF");
+    put_le32(pb, 0); /* file length */
+    put_tag(pb, "AVI ");
+
+    /* header list */
+    list1 = start_tag(pb, "LIST");
+    put_tag(pb, "hdrl");
+
+    /* avi header */
+    put_tag(pb, "avih");
+    put_le32(pb, 14 * 4);
+    bitrate = 0;
+
+    video_enc = NULL;
+    for(n=0;n<s->nb_streams;n++) {
+        stream = &s->streams[n]->codec;
+        bitrate += stream->bit_rate;
+        if (stream->codec_type == CODEC_TYPE_VIDEO)
+            video_enc = stream;
+    }
+    
+    if (!video_enc) {
+        av_free(avi);
+        return -1;
+    }
+    nb_frames = 0;
+
+    put_le32(pb, (UINT32)(INT64_C(1000000) * FRAME_RATE_BASE / video_enc->frame_rate));
+    put_le32(pb, bitrate / 8); /* XXX: not quite exact */
+    put_le32(pb, 0); /* padding */
+    put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
+    avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
+    put_le32(pb, nb_frames); /* nb frames, filled later */
+    put_le32(pb, 0); /* initial frame */
+    put_le32(pb, s->nb_streams); /* nb streams */
+    put_le32(pb, 1024 * 1024); /* suggested buffer size */
+    put_le32(pb, video_enc->width);
+    put_le32(pb, video_enc->height);
+    put_le32(pb, 0); /* reserved */
+    put_le32(pb, 0); /* reserved */
+    put_le32(pb, 0); /* reserved */
+    put_le32(pb, 0); /* reserved */
+    
+    /* stream list */
+    for(i=0;i<n;i++) {
+        list2 = start_tag(pb, "LIST");
+        put_tag(pb, "strl");
+    
+        stream = &s->streams[i]->codec;
+
+        /* stream generic header */
+        strh = start_tag(pb, "strh");
+        switch(stream->codec_type) {
+        case CODEC_TYPE_VIDEO:
+            put_tag(pb, "vids");
+            put_le32(pb, codec_get_bmp_tag(stream->codec_id));
+            put_le32(pb, 0); /* flags */
+            put_le16(pb, 0); /* priority */
+            put_le16(pb, 0); /* language */
+            put_le32(pb, 0); /* initial frame */
+            put_le32(pb, 1000); /* scale */
+            put_le32(pb, (1000 * stream->frame_rate) / FRAME_RATE_BASE); /* rate */
+            put_le32(pb, 0); /* start */
+            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
+            put_le32(pb, nb_frames); /* length, XXX: fill later */
+            put_le32(pb, 1024 * 1024); /* suggested buffer size */
+            put_le32(pb, -1); /* quality */
+            put_le32(pb, stream->width * stream->height * 3); /* sample size */
+            put_le16(pb, 0);
+            put_le16(pb, 0);
+            put_le16(pb, stream->width);
+            put_le16(pb, stream->height);
+            break;
+        case CODEC_TYPE_AUDIO:
+            put_tag(pb, "auds");
+            put_le32(pb, 1); /* tag */
+            put_le32(pb, 0); /* flags */
+            put_le16(pb, 0); /* priority */
+            put_le16(pb, 0); /* language */
+            put_le32(pb, 0); /* initial frame */
+            parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
+            put_le32(pb, au_scale); /* scale */
+            put_le32(pb, au_byterate); /* rate */
+            put_le32(pb, 0); /* start */
+            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
+            put_le32(pb, 0); /* length, XXX: filled later */
+            put_le32(pb, 12 * 1024); /* suggested buffer size */
+            put_le32(pb, -1); /* quality */
+            put_le32(pb, au_ssize); /* sample size */
+            put_le32(pb, 0);
+            put_le32(pb, 0);
+            break;
+        default:
+            av_abort();
+        }
+        end_tag(pb, strh);
+
+        strf = start_tag(pb, "strf");
+        switch(stream->codec_type) {
+        case CODEC_TYPE_VIDEO:
+	    put_bmp_header(pb, stream, codec_bmp_tags, 0);
+            break;
+        case CODEC_TYPE_AUDIO:
+            if (put_wav_header(pb, stream) < 0) {
+                av_free(avi);
+                return -1;
+            }
+            break;
+        default:
+            av_abort();
+        }
+        end_tag(pb, strf);
+        end_tag(pb, list2);
+    }
+
+    end_tag(pb, list1);
+    
+    avi->movi_list = start_tag(pb, "LIST");
+    avi->first = NULL;
+    avi->last = NULL;
+    put_tag(pb, "movi");
+
+    put_flush_packet(pb);
+
+    return 0;
+}
+
+static int avi_write_packet(AVFormatContext *s, int stream_index,
+                            UINT8 *buf, int size, int force_pts)
+{
+    AVIContext *avi = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    AVIIndex *idx;
+    unsigned char tag[5];
+    unsigned int flags;
+    AVCodecContext *enc;
+    
+    enc = &s->streams[stream_index]->codec;
+
+    tag[0] = '0';
+    tag[1] = '0' + stream_index;
+    if (enc->codec_type == CODEC_TYPE_VIDEO) {
+        tag[2] = 'd';
+        tag[3] = 'c';
+        flags = enc->key_frame ? 0x10 : 0x00;
+    } else {
+        tag[2] = 'w';
+        tag[3] = 'b';
+        flags = 0x10;
+    }
+    if (enc->codec_type == CODEC_TYPE_AUDIO) 
+       avi->audio_strm_length[stream_index] += size;
+
+    if (!url_is_streamed(&s->pb)) {
+        idx = av_malloc(sizeof(AVIIndex));
+        memcpy(idx->tag, tag, 4);
+        idx->flags = flags;
+        idx->pos = url_ftell(pb) - avi->movi_list;
+        idx->len = size;
+        idx->next = NULL;
+        if (!avi->last)
+            avi->first = idx;
+        else
+            avi->last->next = idx;
+        avi->last = idx;
+    }
+    
+    put_buffer(pb, tag, 4);
+    put_le32(pb, size);
+    put_buffer(pb, buf, size);
+    if (size & 1)
+        put_byte(pb, 0);
+
+    put_flush_packet(pb);
+    return 0;
+}
+
+static int avi_write_trailer(AVFormatContext *s)
+{
+    ByteIOContext *pb = &s->pb;
+    AVIContext *avi = s->priv_data;
+    offset_t file_size, idx_chunk;
+    int n, nb_frames, au_byterate, au_ssize, au_scale;
+    AVCodecContext *stream;
+    AVIIndex *idx;
+
+    if (!url_is_streamed(&s->pb)) {
+        end_tag(pb, avi->movi_list);
+
+        idx_chunk = start_tag(pb, "idx1");
+        idx = avi->first;
+        while (idx != NULL) {
+            put_buffer(pb, idx->tag, 4);
+            put_le32(pb, idx->flags);
+            put_le32(pb, idx->pos);
+            put_le32(pb, idx->len);
+            idx = idx->next;
+        }
+        end_tag(pb, idx_chunk);
+        
+        /* update file size */
+        file_size = url_ftell(pb);
+        url_fseek(pb, 4, SEEK_SET);
+        put_le32(pb, (UINT32)(file_size - 8));
+
+        /* Fill in frame/sample counters */
+        nb_frames = 0;
+        for(n=0;n<s->nb_streams;n++) {
+            if (avi->frames_hdr_strm[n] != 0) {
+                stream = &s->streams[n]->codec;
+                url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
+                if (stream->codec_type == CODEC_TYPE_VIDEO) {
+                    put_le32(pb, stream->frame_number); 
+                    if (nb_frames < stream->frame_number)
+                        nb_frames = stream->frame_number;
+                } else {
+                    if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3LAME) {
+                        put_le32(pb, stream->frame_number);
+                        nb_frames += stream->frame_number;
+                    } else {
+                        parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
+                        put_le32(pb, avi->audio_strm_length[n] / au_ssize);
+                    }
+                }
+            }
+       }
+       if (avi->frames_hdr_all != 0) {
+           url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
+           put_le32(pb, nb_frames); 
+       }
+        url_fseek(pb, file_size, SEEK_SET);
+    }
+    put_flush_packet(pb);
+    return 0;
+}
+
+static AVOutputFormat avi_oformat = {
+    "avi",
+    "avi format",
+    "video/x-msvideo",
+    "avi",
+    sizeof(AVIContext),
+    CODEC_ID_MP2,
+    CODEC_ID_MSMPEG4V3,
+    avi_write_header,
+    avi_write_packet,
+    avi_write_trailer,
+};
+
+int avienc_init(void)
+{
+    av_register_output_format(&avi_oformat);
+    return 0;
+}

libavformat/avio.c

@@ -0,0 +1,156 @@
+/*
+ * Unbuffered io for ffmpeg system
+ * Copyright (c) 2001 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+URLProtocol *first_protocol = NULL;
+
+int register_protocol(URLProtocol *protocol)
+{
+    URLProtocol **p;
+    p = &first_protocol;
+    while (*p != NULL) p = &(*p)->next;
+    *p = protocol;
+    protocol->next = NULL;
+    return 0;
+}
+
+int url_open(URLContext **puc, const char *filename, int flags)
+{
+    URLContext *uc;
+    URLProtocol *up;
+    const char *p;
+    char proto_str[128], *q;
+    int err;
+
+    p = filename;
+    q = proto_str;
+    while (*p != '\0' && *p != ':') {
+        if ((q - proto_str) < sizeof(proto_str) - 1)
+            *q++ = *p;
+        p++;
+    }
+    /* if the protocol has length 1, we consider it is a dos drive */
+    if (*p == '\0' || (q - proto_str) <= 1) {
+        strcpy(proto_str, "file");
+    } else {
+        *q = '\0';
+    }
+    
+    up = first_protocol;
+    while (up != NULL) {
+        if (!strcmp(proto_str, up->name))
+            goto found;
+        up = up->next;
+    }
+    err = -ENOENT;
+    goto fail;
+ found:
+    uc = av_malloc(sizeof(URLContext));
+    if (!uc) {
+        err = -ENOMEM;
+        goto fail;
+    }
+    uc->prot = up;
+    uc->flags = flags;
+    uc->is_streamed = 0; /* default = not streamed */
+    uc->max_packet_size = 0; /* default: stream file */
+    err = up->url_open(uc, filename, flags);
+    if (err < 0) {
+        av_free(uc);
+        *puc = NULL;
+        return err;
+    }
+    *puc = uc;
+    return 0;
+ fail:
+    *puc = NULL;
+    return err;
+}
+
+int url_read(URLContext *h, unsigned char *buf, int size)
+{
+    int ret;
+    if (h->flags & URL_WRONLY)
+        return -EIO;
+    ret = h->prot->url_read(h, buf, size);
+    return ret;
+}
+
+int url_write(URLContext *h, unsigned char *buf, int size)
+{
+    int ret;
+    if (!(h->flags & (URL_WRONLY | URL_RDWR)))
+        return -EIO;
+    /* avoid sending too big packets */
+    if (h->max_packet_size && size > h->max_packet_size)
+        return -EIO; 
+    ret = h->prot->url_write(h, buf, size);
+    return ret;
+}
+
+offset_t url_seek(URLContext *h, offset_t pos, int whence)
+{
+    offset_t ret;
+
+    if (!h->prot->url_seek)
+        return -EPIPE;
+    ret = h->prot->url_seek(h, pos, whence);
+    return ret;
+}
+
+int url_close(URLContext *h)
+{
+    int ret;
+
+    ret = h->prot->url_close(h);
+    av_free(h);
+    return ret;
+}
+
+int url_exist(const char *filename)
+{
+    URLContext *h;
+    if (url_open(&h, filename, URL_RDONLY) < 0)
+        return 0;
+    url_close(h);
+    return 1;
+}
+
+offset_t url_filesize(URLContext *h)
+{
+    offset_t pos, size;
+    
+    pos = url_seek(h, 0, SEEK_CUR);
+    size = url_seek(h, 0, SEEK_END);
+    url_seek(h, pos, SEEK_SET);
+    return size;
+}
+
+/* 
+ * Return the maximum packet size associated to packetized file
+ * handle. If the file is not packetized (stream like http or file on
+ * disk), then 0 is returned.
+ * 
+ * @param h file handle
+ * @return maximum packet size in bytes
+ */
+int url_get_max_packet_size(URLContext *h)
+{
+    return h->max_packet_size;
+}

libavformat/avio.h

@@ -0,0 +1,153 @@
+#ifndef AVIO_H
+#define AVIO_H
+
+/* output byte stream handling */
+
+typedef INT64 offset_t;
+
+/* unbuffered I/O */
+
+struct URLContext {
+    struct URLProtocol *prot;
+    int flags;        
+    int is_streamed;  /* true if streamed (no seek possible), default = false */
+    int max_packet_size;  /* if non zero, the stream is packetized with this max packet size */
+    void *priv_data;
+};
+
+typedef struct URLContext URLContext;
+
+typedef struct URLPollEntry {
+    URLContext *handle;
+    int events;
+    int revents;
+} URLPollEntry;
+
+#define URL_RDONLY 0
+#define URL_WRONLY 1
+#define URL_RDWR   2
+
+int url_open(URLContext **h, const char *filename, int flags);
+int url_read(URLContext *h, unsigned char *buf, int size);
+int url_write(URLContext *h, unsigned char *buf, int size);
+offset_t url_seek(URLContext *h, offset_t pos, int whence);
+int url_close(URLContext *h);
+int url_exist(const char *filename);
+offset_t url_filesize(URLContext *h);
+int url_get_max_packet_size(URLContext *h);
+/* not implemented */
+int url_poll(URLPollEntry *poll_table, int n, int timeout);
+
+typedef struct URLProtocol {
+    const char *name;
+    int (*url_open)(URLContext *h, const char *filename, int flags);
+    int (*url_read)(URLContext *h, unsigned char *buf, int size);
+    int (*url_write)(URLContext *h, unsigned char *buf, int size);
+    offset_t (*url_seek)(URLContext *h, offset_t pos, int whence);
+    int (*url_close)(URLContext *h);
+    struct URLProtocol *next;
+} URLProtocol;
+
+extern URLProtocol *first_protocol;
+
+int register_protocol(URLProtocol *protocol);
+
+typedef struct {
+    unsigned char *buffer;
+    int buffer_size;
+    unsigned char *buf_ptr, *buf_end;
+    void *opaque;
+    int (*read_packet)(void *opaque, UINT8 *buf, int buf_size);
+    void (*write_packet)(void *opaque, UINT8 *buf, int buf_size);
+    int (*seek)(void *opaque, offset_t offset, int whence);
+    offset_t pos; /* position in the file of the current buffer */
+    int must_flush; /* true if the next seek should flush */
+    int eof_reached; /* true if eof reached */
+    int write_flag;  /* true if open for writing */
+    int is_streamed;
+    int max_packet_size;
+} ByteIOContext;
+
+int init_put_byte(ByteIOContext *s,
+                  unsigned char *buffer,
+                  int buffer_size,
+                  int write_flag,
+                  void *opaque,
+                  int (*read_packet)(void *opaque, UINT8 *buf, int buf_size),
+                  void (*write_packet)(void *opaque, UINT8 *buf, int buf_size),
+                  int (*seek)(void *opaque, offset_t offset, int whence));
+
+void put_byte(ByteIOContext *s, int b);
+void put_buffer(ByteIOContext *s, const unsigned char *buf, int size);
+void put_le64(ByteIOContext *s, UINT64 val);
+void put_be64(ByteIOContext *s, UINT64 val);
+void put_le32(ByteIOContext *s, unsigned int val);
+void put_be32(ByteIOContext *s, unsigned int val);
+void put_le16(ByteIOContext *s, unsigned int val);
+void put_be16(ByteIOContext *s, unsigned int val);
+void put_tag(ByteIOContext *s, const char *tag);
+
+void put_be64_double(ByteIOContext *s, double val);
+void put_strz(ByteIOContext *s, const char *buf);
+
+offset_t url_fseek(ByteIOContext *s, offset_t offset, int whence);
+void url_fskip(ByteIOContext *s, offset_t offset);
+offset_t url_ftell(ByteIOContext *s);
+int url_feof(ByteIOContext *s);
+
+#define URL_EOF (-1)
+int url_fgetc(ByteIOContext *s);
+int url_fprintf(ByteIOContext *s, const char *fmt, ...);
+char *url_fgets(ByteIOContext *s, char *buf, int buf_size);
+
+void put_flush_packet(ByteIOContext *s);
+
+int get_buffer(ByteIOContext *s, unsigned char *buf, int size);
+int get_byte(ByteIOContext *s);
+unsigned int get_le32(ByteIOContext *s);
+UINT64 get_le64(ByteIOContext *s);
+unsigned int get_le16(ByteIOContext *s);
+
+double get_be64_double(ByteIOContext *s);
+char *get_strz(ByteIOContext *s, char *buf, int maxlen);
+unsigned int get_be16(ByteIOContext *s);
+unsigned int get_be32(ByteIOContext *s);
+UINT64 get_be64(ByteIOContext *s);
+
+static inline int url_is_streamed(ByteIOContext *s)
+{
+    return s->is_streamed;
+}
+
+int url_fdopen(ByteIOContext *s, URLContext *h);
+int url_setbufsize(ByteIOContext *s, int buf_size);
+int url_fopen(ByteIOContext *s, const char *filename, int flags);
+int url_fclose(ByteIOContext *s);
+URLContext *url_fileno(ByteIOContext *s);
+int url_fget_max_packet_size(ByteIOContext *s);
+
+int url_open_buf(ByteIOContext *s, UINT8 *buf, int buf_size, int flags);
+int url_close_buf(ByteIOContext *s);
+
+int url_open_dyn_buf(ByteIOContext *s);
+int url_open_dyn_packet_buf(ByteIOContext *s, int max_packet_size);
+int url_close_dyn_buf(ByteIOContext *s, UINT8 **pbuffer);
+
+/* file.c */
+extern URLProtocol file_protocol;
+extern URLProtocol pipe_protocol;
+
+/* udp.c */
+extern URLProtocol udp_protocol;
+int udp_set_remote_url(URLContext *h, const char *uri);
+int udp_get_local_port(URLContext *h);
+int udp_get_file_handle(URLContext *h);
+
+/* tcp.c  */
+extern URLProtocol tcp_protocol;
+
+/* http.c */
+extern URLProtocol http_protocol;
+
+#endif
+

libavformat/aviobuf.c

@@ -0,0 +1,687 @@
+/*
+ * Buffered I/O for ffmpeg system
+ * Copyright (c) 2000,2001 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include <stdarg.h>
+
+#define IO_BUFFER_SIZE 32768
+
+int init_put_byte(ByteIOContext *s,
+                  unsigned char *buffer,
+                  int buffer_size,
+                  int write_flag,
+                  void *opaque,
+                  int (*read_packet)(void *opaque, UINT8 *buf, int buf_size),
+                  void (*write_packet)(void *opaque, UINT8 *buf, int buf_size),
+                  int (*seek)(void *opaque, offset_t offset, int whence))
+{
+    s->buffer = buffer;
+    s->buffer_size = buffer_size;
+    s->buf_ptr = buffer;
+    s->write_flag = write_flag;
+    if (!s->write_flag) 
+        s->buf_end = buffer;
+    else
+        s->buf_end = buffer + buffer_size;
+    s->opaque = opaque;
+    s->write_packet = write_packet;
+    s->read_packet = read_packet;
+    s->seek = seek;
+    s->pos = 0;
+    s->must_flush = 0;
+    s->eof_reached = 0;
+    s->is_streamed = 0;
+    s->max_packet_size = 0;
+    return 0;
+}
+                  
+
+static void flush_buffer(ByteIOContext *s)
+{
+    if (s->buf_ptr > s->buffer) {
+        if (s->write_packet)
+            s->write_packet(s->opaque, s->buffer, s->buf_ptr - s->buffer);
+        s->pos += s->buf_ptr - s->buffer;
+    }
+    s->buf_ptr = s->buffer;
+}
+
+void put_byte(ByteIOContext *s, int b)
+{
+    *(s->buf_ptr)++ = b;
+    if (s->buf_ptr >= s->buf_end) 
+        flush_buffer(s);
+}
+
+void put_buffer(ByteIOContext *s, const unsigned char *buf, int size)
+{
+    int len;
+
+    while (size > 0) {
+        len = (s->buf_end - s->buf_ptr);
+        if (len > size)
+            len = size;
+        memcpy(s->buf_ptr, buf, len);
+        s->buf_ptr += len;
+
+        if (s->buf_ptr >= s->buf_end) 
+            flush_buffer(s);
+
+        buf += len;
+        size -= len;
+    }
+}
+
+void put_flush_packet(ByteIOContext *s)
+{
+    flush_buffer(s);
+    s->must_flush = 0;
+}
+
+offset_t url_fseek(ByteIOContext *s, offset_t offset, int whence)
+{
+    offset_t offset1;
+
+    if (whence != SEEK_CUR && whence != SEEK_SET)
+        return -EINVAL;
+    
+    if (s->write_flag) {
+        if (whence == SEEK_CUR) {
+            offset1 = s->pos + (s->buf_ptr - s->buffer);
+            if (offset == 0)
+                return offset1;
+            offset += offset1;
+        }
+        offset1 = offset - s->pos;
+        if (!s->must_flush && 
+            offset1 >= 0 && offset1 < (s->buf_end - s->buffer)) {
+            /* can do the seek inside the buffer */
+            s->buf_ptr = s->buffer + offset1;
+        } else {
+            if (!s->seek)
+                return -EPIPE;
+            flush_buffer(s);
+            s->must_flush = 1;
+            s->buf_ptr = s->buffer;
+            s->seek(s->opaque, offset, SEEK_SET);
+            s->pos = offset;
+        }
+    } else {
+        if (whence == SEEK_CUR) {
+            offset1 = s->pos - (s->buf_end - s->buffer) + (s->buf_ptr - s->buffer);
+            if (offset == 0)
+                return offset1;
+            offset += offset1;
+        }
+        offset1 = offset - (s->pos - (s->buf_end - s->buffer));
+        if (offset1 >= 0 && offset1 <= (s->buf_end - s->buffer)) {
+            /* can do the seek inside the buffer */
+            s->buf_ptr = s->buffer + offset1;
+        } else {
+            if (!s->seek)
+                return -EPIPE;
+            s->buf_ptr = s->buffer;
+            s->buf_end = s->buffer;
+            s->seek(s->opaque, offset, SEEK_SET);
+            s->pos = offset;
+        }
+        s->eof_reached = 0;
+    }
+    return offset;
+}
+
+void url_fskip(ByteIOContext *s, offset_t offset)
+{
+    url_fseek(s, offset, SEEK_CUR);
+}
+
+offset_t url_ftell(ByteIOContext *s)
+{
+    return url_fseek(s, 0, SEEK_CUR);
+}
+
+int url_feof(ByteIOContext *s)
+{
+    return s->eof_reached;
+}
+
+void put_le32(ByteIOContext *s, unsigned int val)
+{
+    put_byte(s, val);
+    put_byte(s, val >> 8);
+    put_byte(s, val >> 16);
+    put_byte(s, val >> 24);
+}
+
+void put_be32(ByteIOContext *s, unsigned int val)
+{
+    put_byte(s, val >> 24);
+    put_byte(s, val >> 16);
+    put_byte(s, val >> 8);
+    put_byte(s, val);
+}
+
+/* IEEE format is assumed */
+void put_be64_double(ByteIOContext *s, double val)
+{
+    union {
+        double d;
+        UINT64 ull;
+    } u;
+    u.d = val;
+    put_be64(s, u.ull);
+}
+
+void put_strz(ByteIOContext *s, const char *str)
+{
+    if (str)
+        put_buffer(s, (const unsigned char *) str, strlen(str) + 1);
+    else
+        put_byte(s, 0);
+}
+
+void put_le64(ByteIOContext *s, UINT64 val)
+{
+    put_le32(s, (UINT32)(val & 0xffffffff));
+    put_le32(s, (UINT32)(val >> 32));
+}
+
+void put_be64(ByteIOContext *s, UINT64 val)
+{
+    put_be32(s, (UINT32)(val >> 32));
+    put_be32(s, (UINT32)(val & 0xffffffff));
+}
+
+void put_le16(ByteIOContext *s, unsigned int val)
+{
+    put_byte(s, val);
+    put_byte(s, val >> 8);
+}
+
+void put_be16(ByteIOContext *s, unsigned int val)
+{
+    put_byte(s, val >> 8);
+    put_byte(s, val);
+}
+
+void put_tag(ByteIOContext *s, const char *tag)
+{
+    while (*tag) {
+        put_byte(s, *tag++);
+    }
+}
+
+/* Input stream */
+
+static void fill_buffer(ByteIOContext *s)
+{
+    int len;
+
+    /* no need to do anything if EOF already reached */
+    if (s->eof_reached)
+        return;
+    len = s->read_packet(s->opaque, s->buffer, s->buffer_size);
+    if (len <= 0) {
+        /* do not modify buffer if EOF reached so that a seek back can
+           be done without rereading data */
+        s->eof_reached = 1;
+    } else {
+        s->pos += len;
+        s->buf_ptr = s->buffer;
+        s->buf_end = s->buffer + len;
+    }
+}
+
+/* NOTE: return 0 if EOF, so you cannot use it if EOF handling is
+   necessary */
+/* XXX: put an inline version */
+int get_byte(ByteIOContext *s)
+{
+    if (s->buf_ptr < s->buf_end) {
+        return *s->buf_ptr++;
+    } else {
+        fill_buffer(s);
+        if (s->buf_ptr < s->buf_end)
+            return *s->buf_ptr++;
+        else
+            return 0;
+    }
+}
+
+/* NOTE: return URL_EOF (-1) if EOF */
+int url_fgetc(ByteIOContext *s)
+{
+    if (s->buf_ptr < s->buf_end) {
+        return *s->buf_ptr++;
+    } else {
+        fill_buffer(s);
+        if (s->buf_ptr < s->buf_end)
+            return *s->buf_ptr++;
+        else
+            return URL_EOF;
+    }
+}
+
+int get_buffer(ByteIOContext *s, unsigned char *buf, int size)
+{
+    int len, size1;
+
+    size1 = size;
+    while (size > 0) {
+        len = s->buf_end - s->buf_ptr;
+        if (len > size)
+            len = size;
+        if (len == 0) {
+            fill_buffer(s);
+            len = s->buf_end - s->buf_ptr;
+            if (len == 0)
+                break;
+        } else {
+            memcpy(buf, s->buf_ptr, len);
+            buf += len;
+            s->buf_ptr += len;
+            size -= len;
+        }
+    }
+    return size1 - size;
+}
+
+unsigned int get_le16(ByteIOContext *s)
+{
+    unsigned int val;
+    val = get_byte(s);
+    val |= get_byte(s) << 8;
+    return val;
+}
+
+unsigned int get_le32(ByteIOContext *s)
+{
+    unsigned int val;
+    val = get_byte(s);
+    val |= get_byte(s) << 8;
+    val |= get_byte(s) << 16;
+    val |= get_byte(s) << 24;
+    return val;
+}
+
+UINT64 get_le64(ByteIOContext *s)
+{
+    UINT64 val;
+    val = (UINT64)get_le32(s);
+    val |= (UINT64)get_le32(s) << 32;
+    return val;
+}
+
+unsigned int get_be16(ByteIOContext *s)
+{
+    unsigned int val;
+    val = get_byte(s) << 8;
+    val |= get_byte(s);
+    return val;
+}
+
+unsigned int get_be32(ByteIOContext *s)
+{
+    unsigned int val;
+    val = get_byte(s) << 24;
+    val |= get_byte(s) << 16;
+    val |= get_byte(s) << 8;
+    val |= get_byte(s);
+    return val;
+}
+
+double get_be64_double(ByteIOContext *s)
+{
+    union {
+        double d;
+        UINT64 ull;
+    } u;
+
+    u.ull = get_be64(s);
+    return u.d;
+}
+
+char *get_strz(ByteIOContext *s, char *buf, int maxlen)
+{
+    int i = 0;
+    char c;
+
+    while ((c = get_byte(s))) {
+        if (i < maxlen-1)
+            buf[i++] = c;
+    }
+    
+    buf[i] = 0; /* Ensure null terminated, but may be truncated */
+
+    return buf;
+}
+
+UINT64 get_be64(ByteIOContext *s)
+{
+    UINT64 val;
+    val = (UINT64)get_be32(s) << 32;
+    val |= (UINT64)get_be32(s);
+    return val;
+}
+
+/* link with avio functions */
+
+void url_write_packet(void *opaque, UINT8 *buf, int buf_size)
+{
+    URLContext *h = opaque;
+    url_write(h, buf, buf_size);
+}
+
+int url_read_packet(void *opaque, UINT8 *buf, int buf_size)
+{
+    URLContext *h = opaque;
+    return url_read(h, buf, buf_size);
+}
+
+int url_seek_packet(void *opaque, INT64 offset, int whence)
+{
+    URLContext *h = opaque;
+    url_seek(h, offset, whence);
+    return 0;
+}
+
+int url_fdopen(ByteIOContext *s, URLContext *h)
+{
+    UINT8 *buffer;
+    int buffer_size, max_packet_size;
+
+    
+    max_packet_size = url_get_max_packet_size(h);
+    if (max_packet_size) {
+        buffer_size = max_packet_size; /* no need to bufferize more than one packet */
+    } else {
+        buffer_size = IO_BUFFER_SIZE;
+    }
+    buffer = av_malloc(buffer_size);
+    if (!buffer)
+        return -ENOMEM;
+
+    if (init_put_byte(s, buffer, buffer_size, 
+                      (h->flags & URL_WRONLY) != 0, h,
+                      url_read_packet, url_write_packet, url_seek_packet) < 0) {
+        av_free(buffer);
+        return -EIO;
+    }
+    s->is_streamed = h->is_streamed;
+    s->max_packet_size = max_packet_size;
+    return 0;
+}
+
+/* XXX: must be called before any I/O */
+int url_setbufsize(ByteIOContext *s, int buf_size)
+{
+    UINT8 *buffer;
+    buffer = av_malloc(buf_size);
+    if (!buffer)
+        return -ENOMEM;
+
+    av_free(s->buffer);
+    s->buffer = buffer;
+    s->buffer_size = buf_size;
+    s->buf_ptr = buffer;
+    if (!s->write_flag) 
+        s->buf_end = buffer;
+    else
+        s->buf_end = buffer + buf_size;
+    return 0;
+}
+
+/* NOTE: when opened as read/write, the buffers are only used for
+   reading */
+int url_fopen(ByteIOContext *s, const char *filename, int flags)
+{
+    URLContext *h;
+    int err;
+
+    err = url_open(&h, filename, flags);
+    if (err < 0)
+        return err;
+    err = url_fdopen(s, h);
+    if (err < 0) {
+        url_close(h);
+        return err;
+    }
+    return 0;
+}
+
+int url_fclose(ByteIOContext *s)
+{
+    URLContext *h = s->opaque;
+    
+    av_free(s->buffer);
+    memset(s, 0, sizeof(ByteIOContext));
+    return url_close(h);
+}
+
+URLContext *url_fileno(ByteIOContext *s)
+{
+    return s->opaque;
+}
+
+/* XXX: currently size is limited */
+int url_fprintf(ByteIOContext *s, const char *fmt, ...)
+{
+    va_list ap;
+    char buf[4096];
+    int ret;
+
+    va_start(ap, fmt);
+    ret = vsnprintf(buf, sizeof(buf), fmt, ap);
+    va_end(ap);
+    put_buffer(s, buf, strlen(buf));
+    return ret;
+}
+
+/* note: unlike fgets, the EOL character is not returned and a whole
+   line is parsed. return NULL if first char read was EOF */
+char *url_fgets(ByteIOContext *s, char *buf, int buf_size)
+{
+    int c;
+    char *q;
+
+    c = url_fgetc(s);
+    if (c == EOF)
+        return NULL;
+    q = buf;
+    for(;;) {
+        if (c == EOF || c == '\n')
+            break;
+        if ((q - buf) < buf_size - 1)
+            *q++ = c;
+        c = url_fgetc(s);
+    }
+    if (buf_size > 0)
+        *q = '\0';
+    return buf;
+}
+
+/* 
+ * Return the maximum packet size associated to packetized buffered file
+ * handle. If the file is not packetized (stream like http or file on
+ * disk), then 0 is returned.
+ * 
+ * @param h buffered file handle
+ * @return maximum packet size in bytes
+ */
+int url_fget_max_packet_size(ByteIOContext *s)
+{
+    return s->max_packet_size;
+}
+
+/* buffer handling */
+int url_open_buf(ByteIOContext *s, UINT8 *buf, int buf_size, int flags)
+{
+    return init_put_byte(s, buf, buf_size, 
+                         (flags & URL_WRONLY) != 0, NULL, NULL, NULL, NULL);
+}
+
+/* return the written or read size */
+int url_close_buf(ByteIOContext *s)
+{
+    put_flush_packet(s);
+    return s->buf_ptr - s->buffer;
+}
+
+/* output in a dynamic buffer */
+
+typedef struct DynBuffer {
+    int pos, size, allocated_size;
+    UINT8 *buffer;
+    int io_buffer_size;
+    UINT8 io_buffer[1];
+} DynBuffer;
+
+static void dyn_buf_write(void *opaque, UINT8 *buf, int buf_size)
+{
+    DynBuffer *d = opaque;
+    int new_size, new_allocated_size;
+    UINT8 *new_buffer;
+    
+    /* reallocate buffer if needed */
+    new_size = d->pos + buf_size;
+    new_allocated_size = d->allocated_size;
+    while (new_size > new_allocated_size) {
+        if (!new_allocated_size)
+            new_allocated_size = new_size;
+        else
+            new_allocated_size = (new_allocated_size * 3) / 2 + 1;    
+    }
+    
+    if (new_allocated_size > d->allocated_size) {
+        new_buffer = av_malloc(new_allocated_size);
+        if (!new_buffer)
+            return;
+        memcpy(new_buffer, d->buffer, d->size);
+        av_free(d->buffer);
+        d->buffer = new_buffer;
+        d->allocated_size = new_allocated_size;
+    }
+    memcpy(d->buffer + d->pos, buf, buf_size);
+    d->pos = new_size;
+    if (d->pos > d->size)
+        d->size = d->pos;
+}
+
+static void dyn_packet_buf_write(void *opaque, UINT8 *buf, int buf_size)
+{
+    unsigned char buf1[4];
+
+    /* packetized write: output the header */
+    buf1[0] = (buf_size >> 24);
+    buf1[1] = (buf_size >> 16);
+    buf1[2] = (buf_size >> 8);
+    buf1[3] = (buf_size);
+    dyn_buf_write(opaque, buf1, 4);
+
+    /* then the data */
+    dyn_buf_write(opaque, buf, buf_size);
+}
+
+static int dyn_buf_seek(void *opaque, offset_t offset, int whence)
+{
+    DynBuffer *d = opaque;
+
+    if (whence == SEEK_CUR)
+        offset += d->pos;
+    else if (whence == SEEK_END)
+        offset += d->size;
+    if (offset < 0 || offset > 0x7fffffffLL)
+        return -1;
+    d->pos = offset;
+    return 0;
+}
+
+static int url_open_dyn_buf_internal(ByteIOContext *s, int max_packet_size)
+{
+    DynBuffer *d;
+    int io_buffer_size, ret;
+    
+    if (max_packet_size) 
+        io_buffer_size = max_packet_size;
+    else
+        io_buffer_size = 1024;
+        
+    d = av_malloc(sizeof(DynBuffer) + io_buffer_size);
+    if (!d)
+        return -1;
+    d->io_buffer_size = io_buffer_size;
+    d->buffer = NULL;
+    d->pos = 0;
+    d->size = 0;
+    d->allocated_size = 0;
+    ret = init_put_byte(s, d->io_buffer, io_buffer_size, 
+                        1, d, NULL, 
+                        max_packet_size ? dyn_packet_buf_write : dyn_buf_write, 
+                        max_packet_size ? NULL : dyn_buf_seek);
+    if (ret == 0) {
+        s->max_packet_size = max_packet_size;
+    }
+    return ret;
+}
+
+/*
+ * Open a write only memory stream.
+ * 
+ * @param s new IO context
+ * @return zero if no error.
+ */
+int url_open_dyn_buf(ByteIOContext *s)
+{
+    return url_open_dyn_buf_internal(s, 0);
+}
+
+/*
+ * Open a write only packetized memory stream with a maximum packet
+ * size of 'max_packet_size'.  The stream is stored in a memory buffer
+ * with a big endian 4 byte header giving the packet size in bytes.
+ * 
+ * @param s new IO context
+ * @param max_packet_size maximum packet size (must be > 0) 
+ * @return zero if no error.
+ */
+int url_open_dyn_packet_buf(ByteIOContext *s, int max_packet_size)
+{
+    if (max_packet_size <= 0)
+        return -1;
+    return url_open_dyn_buf_internal(s, max_packet_size);
+}
+
+/* 
+ * Return the written size and a pointer to the buffer. The buffer
+ *  must be freed with av_free(). 
+ * @param s IO context
+ * @param pointer to a byte buffer
+ * @return the length of the byte buffer
+ */
+int url_close_dyn_buf(ByteIOContext *s, UINT8 **pbuffer)
+{
+    DynBuffer *d = s->opaque;
+    int size;
+
+    put_flush_packet(s);
+
+    *pbuffer = d->buffer;
+    size = d->size;
+    av_free(d);
+    return size;
+}

libavformat/barpainet.c

@@ -0,0 +1,25 @@
+
+#include <stdlib.h>
+#include <strings.h>
+#include "barpainet.h"
+
+int inet_aton (const char * str, struct in_addr * add) {
+	const char * pch = str;
+	unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
+	
+	add1 = atoi(pch);
+	pch = strpbrk(pch,".");
+	if (pch == 0 || ++pch == 0) goto done;
+	add2 = atoi(pch);
+	pch = strpbrk(pch,".");
+	if (pch == 0 || ++pch == 0) goto done;
+	add3 = atoi(pch);
+	pch = strpbrk(pch,".");
+	if (pch == 0 || ++pch == 0) goto done;
+	add4 = atoi(pch);
+
+done:
+	add->s_addr=(add4<<24)+(add3<<16)+(add2<<8)+add1;
+	
+	return 1;	
+}

libavformat/barpainet.h

@@ -0,0 +1,23 @@
+#ifndef BARPA_INET_H
+#define BARPA_INET_H
+
+#include "../config.h"
+
+#ifdef CONFIG_BEOS_NETSERVER
+
+# include <socket.h>
+int inet_aton (const char * str, struct in_addr * add);
+# define PF_INET AF_INET
+# define SO_SNDBUF 0x40000001
+
+/* fake */
+struct ip_mreq {
+    struct in_addr imr_multiaddr;  /* IP multicast address of group */
+    struct in_addr imr_interface;  /* local IP address of interface */
+};
+
+#else
+# include <arpa/inet.h>
+#endif
+
+#endif /* BARPA_INET_H */

libavformat/beosaudio.cpp

@@ -0,0 +1,449 @@
+/*
+ * BeOS audio play interface
+ * Copyright (c) 2000, 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <signal.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+#include <Application.h>
+#include <SoundPlayer.h>
+
+extern "C" {
+#include "avformat.h"
+}
+
+/* enable performance checks */
+//#define PERF_CHECK
+
+//const char *audio_device = "/dev/dsp";
+const char *audio_device = "beosaudio:";
+
+/* Pipes are 4k in BeOS IIRC */
+#define AUDIO_BLOCK_SIZE 4096
+//#define AUDIO_BLOCK_SIZE 2048
+#define AUDIO_BLOCK_COUNT 8
+
+#define AUDIO_BUFFER_SIZE (AUDIO_BLOCK_SIZE*AUDIO_BLOCK_COUNT)
+
+/* pipes suck for realtime */
+#define USE_RING_BUFFER 1
+
+typedef struct {
+    int fd;
+    int sample_rate;
+    int channels;
+    int frame_size; /* in bytes ! */
+    CodecID codec_id;
+    int flip_left : 1;
+    UINT8 buffer[AUDIO_BUFFER_SIZE];
+    int buffer_ptr;
+    int pipefd; /* the other end of the pipe */
+    /* ring buffer */
+    sem_id input_sem;
+    int input_index;
+    sem_id output_sem;
+    int output_index;
+    int queued;
+    BSoundPlayer *player;
+    int has_quit; /* signal callbacks not to wait */
+    volatile bigtime_t starve_time;
+} AudioData;
+
+static thread_id main_thid;
+static thread_id bapp_thid;
+static int own_BApp_created = 0;
+static int refcount = 0;
+
+/* create the BApplication and Run() it */
+static int32 bapp_thread(void *arg)
+{
+    new BApplication("application/x-vnd.ffmpeg");
+    own_BApp_created = 1;
+    be_app->Run();
+    /* kill the process group */
+//    kill(0, SIGINT);
+//    kill(main_thid, SIGHUP);
+    return B_OK;
+}
+
+/* create the BApplication only if needed */
+static void create_bapp_if_needed(void)
+{
+    if (refcount++ == 0) {
+        /* needed by libmedia */
+        if (be_app == NULL) {
+            bapp_thid = spawn_thread(bapp_thread, "ffmpeg BApplication", B_NORMAL_PRIORITY, NULL);
+            resume_thread(bapp_thid);
+            while (!own_BApp_created)
+                snooze(50000);
+        }
+    }
+}
+
+static void destroy_bapp_if_needed(void)
+{
+    if (--refcount == 0 && own_BApp_created) {
+        be_app->Lock();
+        be_app->Quit();
+        be_app = NULL;
+    }
+}
+
+/* called back by BSoundPlayer */
+static void audioplay_callback(void *cookie, void *buffer, size_t bufferSize, const media_raw_audio_format &format)
+{
+    AudioData *s;
+    size_t len, amount;
+    unsigned char *buf = (unsigned char *)buffer;
+
+    s = (AudioData *)cookie;
+    if (s->has_quit)
+        return;
+    while (bufferSize > 0) {
+#ifdef PERF_CHECK
+        bigtime_t t;
+        t = system_time();
+#endif
+#ifdef USE_RING_BUFFER
+        len = MIN(AUDIO_BLOCK_SIZE, bufferSize);
+        if (acquire_sem_etc(s->output_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK) {
+            s->has_quit = 1;
+            s->player->SetHasData(false);
+            return;
+        }
+        amount = MIN(len, (AUDIO_BUFFER_SIZE - s->output_index));
+        memcpy(buf, &s->buffer[s->output_index], amount);
+        s->output_index += amount;
+        if (s->output_index >= AUDIO_BUFFER_SIZE) {
+            s->output_index %= AUDIO_BUFFER_SIZE;
+            memcpy(buf + amount, &s->buffer[s->output_index], len - amount);
+            s->output_index += len-amount;
+            s->output_index %= AUDIO_BUFFER_SIZE;
+        }
+        release_sem_etc(s->input_sem, len, 0);
+#else
+        len = read(s->pipefd, buf, bufferSize);
+#endif
+#ifdef PERF_CHECK
+        t = system_time() - t;
+        s->starve_time = MAX(s->starve_time, t);
+#endif
+#ifndef USE_RING_BUFFER
+        if (len < B_OK) {
+            puts("EPIPE");
+            s->player->SetHasData(false);
+            snooze(100000);
+            return;
+        }
+        if (len == 0) {
+            s->player->SetHasData(false);
+            snooze(100000);
+            return;
+        }
+#endif
+        buf += len;
+        bufferSize -= len;
+    }
+}
+
+static int audio_open(AudioData *s, int is_output)
+{
+    int p[2];
+    int ret;
+    media_raw_audio_format format;
+
+    if (!is_output)
+        return -EIO; /* not for now */
+#ifdef USE_RING_BUFFER
+    s->input_sem = create_sem(AUDIO_BUFFER_SIZE, "ffmpeg_ringbuffer_input");
+//    s->input_sem = create_sem(AUDIO_BLOCK_SIZE, "ffmpeg_ringbuffer_input");
+    if (s->input_sem < B_OK)
+        return -EIO;
+    s->output_sem = create_sem(0, "ffmpeg_ringbuffer_output");
+    if (s->output_sem < B_OK) {
+        delete_sem(s->input_sem);
+        return -EIO;
+    }
+    s->input_index = 0;
+    s->output_index = 0;
+    s->queued = 0;
+#else
+    ret = pipe(p);
+    if (ret < 0)
+        return -EIO;
+    s->fd = p[is_output?1:0];
+    s->pipefd = p[is_output?0:1];
+    if (s->fd < 0) {
+        perror(is_output?"audio out":"audio in");
+        return -EIO;
+    }
+#endif
+    create_bapp_if_needed();
+    /* non blocking mode */
+//    fcntl(s->fd, F_SETFL, O_NONBLOCK);
+//    fcntl(s->pipefd, F_SETFL, O_NONBLOCK);
+    s->frame_size = AUDIO_BLOCK_SIZE;
+    format = media_raw_audio_format::wildcard;
+    format.format = media_raw_audio_format::B_AUDIO_SHORT;
+    format.byte_order = B_HOST_IS_LENDIAN ? B_MEDIA_LITTLE_ENDIAN : B_MEDIA_BIG_ENDIAN;
+    format.channel_count = s->channels;
+    format.buffer_size = s->frame_size;
+    format.frame_rate = s->sample_rate;
+    s->player = new BSoundPlayer(&format, "ffmpeg output", audioplay_callback);
+    if (s->player->InitCheck() != B_OK) {
+        delete s->player;
+        s->player = NULL;
+#ifdef USE_RING_BUFFER
+    if (s->input_sem)
+        delete_sem(s->input_sem);
+    if (s->output_sem)
+        delete_sem(s->output_sem);
+#else
+        close(s->fd);
+        close(s->pipefd);
+#endif
+        return -EIO;
+    }
+    s->player->SetCookie(s);
+    s->player->SetVolume(1.0);
+    s->player->Start();
+    s->player->SetHasData(true);
+    /* bump up the priority (avoid realtime though) */
+    set_thread_priority(find_thread(NULL), B_DISPLAY_PRIORITY+1);
+    return 0;
+}
+
+static int audio_close(AudioData *s)
+{
+#ifdef USE_RING_BUFFER
+    if (s->input_sem)
+        delete_sem(s->input_sem);
+    if (s->output_sem)
+        delete_sem(s->output_sem);
+#endif
+    s->has_quit = 1;
+    if (s->player) {
+        s->player->Stop();
+    }
+    if (s->player)
+        delete s->player;
+#ifndef USE_RING_BUFFER
+    close(s->pipefd);
+    close(s->fd);
+#endif
+    destroy_bapp_if_needed();
+    return 0;
+}
+
+/* sound output support */
+static int audio_write_header(AVFormatContext *s1)
+{
+    AudioData *s = (AudioData *)s1->priv_data;
+    AVStream *st;
+    int ret;
+
+    st = s1->streams[0];
+    s->sample_rate = st->codec.sample_rate;
+    s->channels = st->codec.channels;
+    ret = audio_open(s, 1);
+    if (ret < 0)
+        return -EIO;
+    return 0;
+}
+
+static int audio_write_packet(AVFormatContext *s1, int stream_index,
+                              UINT8 *buf, int size, int force_pts)
+{
+    AudioData *s = (AudioData *)s1->priv_data;
+    int len, ret;
+#ifdef PERF_CHECK
+    bigtime_t t = s->starve_time;
+    s->starve_time = 0;
+    printf("starve_time: %lld    \n", t);
+#endif
+#ifdef USE_RING_BUFFER
+    while (size > 0) {
+        int amount;
+        len = MIN(size, AUDIO_BLOCK_SIZE);
+        if (acquire_sem_etc(s->input_sem, len, B_CAN_INTERRUPT, 0LL) < B_OK)
+            return -EIO;
+        amount = MIN(len, (AUDIO_BUFFER_SIZE - s->input_index));
+        memcpy(&s->buffer[s->input_index], buf, amount);
+        s->input_index += amount;
+        if (s->input_index >= AUDIO_BUFFER_SIZE) {
+            s->input_index %= AUDIO_BUFFER_SIZE;
+            memcpy(&s->buffer[s->input_index], buf + amount, len - amount);
+            s->input_index += len - amount;
+        }
+        release_sem_etc(s->output_sem, len, 0);
+        buf += len;
+        size -= len;
+    }
+#else
+    while (size > 0) {
+        len = AUDIO_BLOCK_SIZE - s->buffer_ptr;
+        if (len > size)
+            len = size;
+        memcpy(s->buffer + s->buffer_ptr, buf, len);
+        s->buffer_ptr += len;
+        if (s->buffer_ptr >= AUDIO_BLOCK_SIZE) {
+            for(;;) {
+//snooze(1000);
+                ret = write(s->fd, s->buffer, AUDIO_BLOCK_SIZE);
+                if (ret != 0)
+                    break;
+                if (ret < 0 && (errno != EAGAIN && errno != EINTR))
+                    return -EIO;
+            }
+            s->buffer_ptr = 0;
+        }
+        buf += len;
+        size -= len;
+    }
+#endif
+    return 0;
+}
+
+static int audio_write_trailer(AVFormatContext *s1)
+{
+    AudioData *s = (AudioData *)s1->priv_data;
+
+    audio_close(s);
+    return 0;
+}
+
+/* grab support */
+
+static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap)
+{
+    AudioData *s = (AudioData *)s1->priv_data;
+    AVStream *st;
+    int ret;
+
+    if (!ap || ap->sample_rate <= 0 || ap->channels <= 0)
+        return -1;
+
+    st = av_new_stream(s1, 0);
+    if (!st) {
+        return -ENOMEM;
+    }
+    s->sample_rate = ap->sample_rate;
+    s->channels = ap->channels;
+
+    ret = audio_open(s, 0);
+    if (ret < 0) {
+        av_free(st);
+        return -EIO;
+    } else {
+        /* take real parameters */
+        st->codec.codec_type = CODEC_TYPE_AUDIO;
+        st->codec.codec_id = s->codec_id;
+        st->codec.sample_rate = s->sample_rate;
+        st->codec.channels = s->channels;
+        return 0;
+    }
+}
+
+static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    AudioData *s = (AudioData *)s1->priv_data;
+    int ret;
+
+    if (av_new_packet(pkt, s->frame_size) < 0)
+        return -EIO;
+    for(;;) {
+        ret = read(s->fd, pkt->data, pkt->size);
+        if (ret > 0)
+            break;
+        if (ret == -1 && (errno == EAGAIN || errno == EINTR)) {
+            av_free_packet(pkt);
+            pkt->size = 0;
+            return 0;
+        }
+        if (!(ret == 0 || (ret == -1 && (errno == EAGAIN || errno == EINTR)))) {
+            av_free_packet(pkt);
+            return -EIO;
+        }
+    }
+    pkt->size = ret;
+    if (s->flip_left && s->channels == 2) {
+        int i;
+        short *p = (short *) pkt->data;
+
+        for (i = 0; i < ret; i += 4) {
+            *p = ~*p;
+            p += 2;
+        }
+    }
+    return 0;
+}
+
+static int audio_read_close(AVFormatContext *s1)
+{
+    AudioData *s = (AudioData *)s1->priv_data;
+
+    audio_close(s);
+    return 0;
+}
+
+AVInputFormat audio_in_format = {
+    "audio_device",
+    "audio grab and output",
+    sizeof(AudioData),
+    NULL,
+    audio_read_header,
+    audio_read_packet,
+    audio_read_close,
+    NULL,
+    AVFMT_NOFILE,
+};
+
+AVOutputFormat audio_out_format = {
+    "audio_device",
+    "audio grab and output",
+    "",
+    "",
+    sizeof(AudioData),
+#ifdef WORDS_BIGENDIAN
+    CODEC_ID_PCM_S16BE,
+#else
+    CODEC_ID_PCM_S16LE,
+#endif
+    CODEC_ID_NONE,
+    audio_write_header,
+    audio_write_packet,
+    audio_write_trailer,
+    AVFMT_NOFILE,
+};
+
+extern "C" {
+
+int audio_init(void)
+{
+    main_thid = find_thread(NULL);
+    av_register_input_format(&audio_in_format);
+    av_register_output_format(&audio_out_format);
+    return 0;
+}
+
+} // "C"
+

libavformat/crc.c

@@ -0,0 +1,111 @@
+/* 
+ * CRC decoder (for codec/format testing)
+ * Copyright (c) 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+/* adler32.c -- compute the Adler-32 checksum of a data stream
+ * Copyright (C) 1995 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#define BASE 65521L /* largest prime smaller than 65536 */
+#define NMAX 5552
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+
+#define DO1(buf)  {s1 += *buf++; s2 += s1;}
+#define DO2(buf)  DO1(buf); DO1(buf);
+#define DO4(buf)  DO2(buf); DO2(buf);
+#define DO8(buf)  DO4(buf); DO4(buf);
+#define DO16(buf) DO8(buf); DO8(buf);
+
+static UINT32 adler32(UINT32 adler, UINT8 *buf, unsigned int len)
+{
+    unsigned long s1 = adler & 0xffff;
+    unsigned long s2 = (adler >> 16) & 0xffff;
+    int k;
+
+    if (buf == NULL) return 1L;
+
+    while (len > 0) {
+        k = len < NMAX ? len : NMAX;
+        len -= k;
+        while (k >= 16) {
+            DO16(buf);
+            k -= 16;
+        }
+        if (k != 0) do {
+            DO1(buf);
+        } while (--k);
+        s1 %= BASE;
+        s2 %= BASE;
+    }
+    return (s2 << 16) | s1;
+}
+
+typedef struct CRCState {
+    UINT32 crcval;
+} CRCState;
+
+static int crc_write_header(struct AVFormatContext *s)
+{
+    CRCState *crc = s->priv_data;
+
+    /* init CRC */
+    crc->crcval = adler32(0, NULL, 0);
+
+    return 0;
+}
+
+static int crc_write_packet(struct AVFormatContext *s, 
+                            int stream_index,
+                            unsigned char *buf, int size, int force_pts)
+{
+    CRCState *crc = s->priv_data;
+    crc->crcval = adler32(crc->crcval, buf, size);
+    return 0;
+}
+
+static int crc_write_trailer(struct AVFormatContext *s)
+{
+    CRCState *crc = s->priv_data;
+    char buf[64];
+
+    snprintf(buf, sizeof(buf), "CRC=%08x\n", crc->crcval);
+    put_buffer(&s->pb, buf, strlen(buf));
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static AVOutputFormat crc_format = {
+    "crc",
+    "crc testing format",
+    NULL,
+    "",
+    sizeof(CRCState),
+    CODEC_ID_PCM_S16LE,
+    CODEC_ID_RAWVIDEO,
+    crc_write_header,
+    crc_write_packet,
+    crc_write_trailer,
+};
+
+int crc_init(void)
+{
+    av_register_output_format(&crc_format);
+    return 0;
+}

libavformat/cutils.c

@@ -0,0 +1,110 @@
+/*
+ * Various simple utilities for ffmpeg system
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include <ctype.h>
+
+#if !defined(CONFIG_NOCUTILS)
+/**
+ * Return TRUE if val is a prefix of str. If it returns TRUE, ptr is
+ * set to the next character in 'str' after the prefix.
+ *
+ * @param str input string
+ * @param val prefix to test
+ * @param ptr updated after the prefix in str in there is a match
+ * @return TRUE if there is a match
+ */
+int strstart(const char *str, const char *val, const char **ptr)
+{
+    const char *p, *q;
+    p = str;
+    q = val;
+    while (*q != '\0') {
+        if (*p != *q)
+            return 0;
+        p++;
+        q++;
+    }
+    if (ptr)
+        *ptr = p;
+    return 1;
+}
+
+/**
+ * Return TRUE if val is a prefix of str (case independent). If it
+ * returns TRUE, ptr is set to the next character in 'str' after the
+ * prefix.
+ *
+ * @param str input string
+ * @param val prefix to test
+ * @param ptr updated after the prefix in str in there is a match
+ * @return TRUE if there is a match */
+int stristart(const char *str, const char *val, const char **ptr)
+{
+    const char *p, *q;
+    p = str;
+    q = val;
+    while (*q != '\0') {
+        if (toupper(*(unsigned char *)p) != toupper(*(unsigned char *)q))
+            return 0;
+        p++;
+        q++;
+    }
+    if (ptr)
+        *ptr = p;
+    return 1;
+}
+
+/**
+ * Copy the string str to buf. If str length is bigger than buf_size -
+ * 1 then it is clamped to buf_size - 1.
+ * NOTE: this function does what strncpy should have done to be
+ * useful. NEVER use strncpy.
+ * 
+ * @param buf destination buffer
+ * @param buf_size size of destination buffer
+ * @param str source string
+ */
+void pstrcpy(char *buf, int buf_size, const char *str)
+{
+    int c;
+    char *q = buf;
+
+    if (buf_size <= 0)
+        return;
+
+    for(;;) {
+        c = *str++;
+        if (c == 0 || q >= buf + buf_size - 1)
+            break;
+        *q++ = c;
+    }
+    *q = '\0';
+}
+
+/* strcat and truncate. */
+char *pstrcat(char *buf, int buf_size, const char *s)
+{
+    int len;
+    len = strlen(buf);
+    if (len < buf_size) 
+        pstrcpy(buf + len, buf_size - len, s);
+    return buf;
+}
+
+#endif

libavformat/dv.c

@@ -0,0 +1,134 @@
+/* 
+ * Raw DV format
+ * Copyright (c) 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+#define NTSC_FRAME_SIZE 120000
+#define PAL_FRAME_SIZE  144000
+
+typedef struct DVDemuxContext {
+    int is_audio;
+} DVDemuxContext;
+
+/* raw input */
+static int dv_read_header(AVFormatContext *s,
+                          AVFormatParameters *ap)
+{
+    AVStream *vst, *ast;
+
+    vst = av_new_stream(s, 0);
+    if (!vst)
+        return AVERROR_NOMEM;
+    vst->codec.codec_type = CODEC_TYPE_VIDEO;
+    vst->codec.codec_id = CODEC_ID_DVVIDEO;
+
+#if 0
+    ast = av_new_stream(s, 1);
+    if (!ast)
+        return AVERROR_NOMEM;
+
+    ast->codec.codec_type = CODEC_TYPE_AUDIO;
+    ast->codec.codec_id = CODEC_ID_DVAUDIO;
+#endif
+    return 0;
+}
+
+/* XXX: build fake audio stream when DV audio decoder will be finished */
+static int dv_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    int ret, size, dsf;
+    uint8_t buf[4];
+    
+    ret = get_buffer(&s->pb, buf, 4);
+    if (ret <= 0) 
+        return -EIO;
+    dsf = buf[3] & 0x80;
+    if (!dsf)
+        size = NTSC_FRAME_SIZE;
+    else
+        size = PAL_FRAME_SIZE;
+    
+    if (av_new_packet(pkt, size) < 0)
+        return -EIO;
+
+    pkt->stream_index = 0;
+    memcpy(pkt->data, buf, 4);
+    ret = get_buffer(&s->pb, pkt->data + 4, size - 4);
+    if (ret <= 0) {
+        av_free_packet(pkt);
+        return -EIO;
+    }
+    return ret;
+}
+
+static int dv_read_close(AVFormatContext *s)
+{
+    return 0;
+}
+
+static AVInputFormat dv_iformat = {
+    "dv",
+    "DV video format",
+    sizeof(DVDemuxContext),
+    NULL,
+    dv_read_header,
+    dv_read_packet,
+    dv_read_close,
+    .extensions = "dv",
+};
+
+#if 0
+int dv_write_header(struct AVFormatContext *s)
+{
+    return 0;
+}
+
+int dv_write_packet(struct AVFormatContext *s, 
+                     int stream_index,
+                     unsigned char *buf, int size, int force_pts)
+{
+    put_buffer(&s->pb, buf, size);
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+int dv_write_trailer(struct AVFormatContext *s)
+{
+    return 0;
+}
+
+AVOutputFormat dv_oformat = {
+    "dv",
+    "DV video format",
+    NULL,
+    "dv",
+    0,
+    CODEC_ID_DVVIDEO,
+    CODEC_ID_DVAUDIO,
+    dv_write_header,
+    dv_write_packet,
+    dv_write_trailer,
+};
+#endif
+
+int dv_init(void)
+{
+    av_register_input_format(&dv_iformat);
+    //    av_register_output_format(&dv_oformat);
+    return 0;
+}

libavformat/ffm.c

@@ -0,0 +1,684 @@
+/*
+ * FFM (ffserver live feed) encoder and decoder
+ * Copyright (c) 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include <unistd.h>
+
+/* The FFM file is made of blocks of fixed size */
+#define FFM_HEADER_SIZE 14
+#define PACKET_ID       0x666d
+
+/* each packet contains frames (which can span several packets */
+#define FRAME_HEADER_SIZE    8
+#define FLAG_KEY_FRAME       0x01
+
+typedef struct FFMStream {
+    INT64 pts;
+} FFMStream;
+
+enum {
+    READ_HEADER,
+    READ_DATA,
+};
+
+typedef struct FFMContext {
+    /* only reading mode */
+    offset_t write_index, file_size;
+    int read_state;
+    UINT8 header[FRAME_HEADER_SIZE];
+
+    /* read and write */
+    int first_packet; /* true if first packet, needed to set the discontinuity tag */
+    int packet_size;
+    int frame_offset;
+    INT64 pts;
+    UINT8 *packet_ptr, *packet_end;
+    UINT8 packet[FFM_PACKET_SIZE];
+} FFMContext;
+
+/* disable pts hack for testing */
+int ffm_nopts = 0;
+
+static void flush_packet(AVFormatContext *s)
+{
+    FFMContext *ffm = s->priv_data;
+    int fill_size, h;
+    ByteIOContext *pb = &s->pb;
+
+    fill_size = ffm->packet_end - ffm->packet_ptr;
+    memset(ffm->packet_ptr, 0, fill_size);
+
+    /* put header */
+    put_be16(pb, PACKET_ID);
+    put_be16(pb, fill_size);
+    put_be64(pb, ffm->pts);
+    h = ffm->frame_offset;
+    if (ffm->first_packet)
+        h |= 0x8000;
+    put_be16(pb, h);
+    put_buffer(pb, ffm->packet, ffm->packet_end - ffm->packet);
+
+    /* prepare next packet */
+    ffm->frame_offset = 0; /* no key frame */
+    ffm->pts = 0; /* no pts */
+    ffm->packet_ptr = ffm->packet;
+    ffm->first_packet = 0;
+}
+
+/* 'first' is true if first data of a frame */
+static void ffm_write_data(AVFormatContext *s,
+                           UINT8 *buf, int size,
+                           INT64 pts, int first)
+{
+    FFMContext *ffm = s->priv_data;
+    int len;
+
+    if (first && ffm->frame_offset == 0)
+        ffm->frame_offset = ffm->packet_ptr - ffm->packet + FFM_HEADER_SIZE;
+    if (first && ffm->pts == 0)
+        ffm->pts = pts;
+
+    /* write as many packets as needed */
+    while (size > 0) {
+        len = ffm->packet_end - ffm->packet_ptr;
+        if (len > size)
+            len = size;
+        memcpy(ffm->packet_ptr, buf, len);
+
+        ffm->packet_ptr += len;
+        buf += len;
+        size -= len;
+        if (ffm->packet_ptr >= ffm->packet_end) {
+            /* special case : no pts in packet : we leave the current one */
+            if (ffm->pts == 0)
+                ffm->pts = pts;
+
+            flush_packet(s);
+        }
+    }
+}
+
+static int ffm_write_header(AVFormatContext *s)
+{
+    FFMContext *ffm = s->priv_data;
+    AVStream *st;
+    FFMStream *fst;
+    ByteIOContext *pb = &s->pb;
+    AVCodecContext *codec;
+    int bit_rate, i;
+
+    ffm->packet_size = FFM_PACKET_SIZE;
+
+    /* header */
+    put_tag(pb, "FFM1");
+    put_be32(pb, ffm->packet_size);
+    /* XXX: store write position in other file ? */
+    put_be64(pb, ffm->packet_size); /* current write position */
+
+    put_be32(pb, s->nb_streams);
+    bit_rate = 0;
+    for(i=0;i<s->nb_streams;i++) {
+        st = s->streams[i];
+        bit_rate += st->codec.bit_rate;
+    }
+    put_be32(pb, bit_rate);
+
+    /* list of streams */
+    for(i=0;i<s->nb_streams;i++) {
+        st = s->streams[i];
+        fst = av_mallocz(sizeof(FFMStream));
+        if (!fst)
+            goto fail;
+        st->priv_data = fst;
+
+        codec = &st->codec;
+        /* generic info */
+        put_be32(pb, codec->codec_id);
+        put_byte(pb, codec->codec_type);
+        put_be32(pb, codec->bit_rate);
+	put_be32(pb, codec->quality);
+        put_be32(pb, codec->flags);
+        /* specific info */
+        switch(codec->codec_type) {
+        case CODEC_TYPE_VIDEO:
+            put_be32(pb, (codec->frame_rate * 1000) / FRAME_RATE_BASE);
+            put_be16(pb, codec->width);
+            put_be16(pb, codec->height);
+            put_be16(pb, codec->gop_size);
+            put_byte(pb, codec->qmin);
+            put_byte(pb, codec->qmax);
+            put_byte(pb, codec->max_qdiff);
+            put_be16(pb, (int) (codec->qcompress * 10000.0));
+            put_be16(pb, (int) (codec->qblur * 10000.0));
+            put_be32(pb, codec->bit_rate_tolerance);
+            put_strz(pb, codec->rc_eq);
+            put_be32(pb, codec->rc_max_rate);
+            put_be32(pb, codec->rc_min_rate);
+            put_be32(pb, codec->rc_buffer_size);
+            put_be64_double(pb, codec->i_quant_factor);
+            put_be64_double(pb, codec->b_quant_factor);
+            put_be64_double(pb, codec->i_quant_offset);
+            put_be64_double(pb, codec->b_quant_offset);
+            put_be32(pb, codec->dct_algo);
+            break;
+        case CODEC_TYPE_AUDIO:
+            put_be32(pb, codec->sample_rate);
+            put_le16(pb, codec->channels);
+            put_le16(pb, codec->frame_size);
+            break;
+        default:
+            av_abort();
+        }
+        /* hack to have real time */
+        if (ffm_nopts)
+            fst->pts = 0;
+        else
+            fst->pts = av_gettime();
+    }
+
+    /* flush until end of block reached */
+    while ((url_ftell(pb) % ffm->packet_size) != 0)
+        put_byte(pb, 0);
+
+    put_flush_packet(pb);
+
+    /* init packet mux */
+    ffm->packet_ptr = ffm->packet;
+    ffm->packet_end = ffm->packet + ffm->packet_size - FFM_HEADER_SIZE;
+    ffm->frame_offset = 0;
+    ffm->pts = 0;
+    ffm->first_packet = 1;
+
+    return 0;
+ fail:
+    for(i=0;i<s->nb_streams;i++) {
+        st = s->streams[i];
+        av_freep(&st->priv_data);
+    }
+    return -1;
+}
+
+static int ffm_write_packet(AVFormatContext *s, int stream_index,
+                            UINT8 *buf, int size, int force_pts)
+{
+    AVStream *st = s->streams[stream_index];
+    FFMStream *fst = st->priv_data;
+    INT64 pts;
+    UINT8 header[FRAME_HEADER_SIZE];
+    int duration;
+
+    if (st->codec.codec_type == CODEC_TYPE_AUDIO) {
+        duration = ((float)st->codec.frame_size / st->codec.sample_rate * 1000000.0);
+    } else {
+        duration = (1000000.0 * FRAME_RATE_BASE / (float)st->codec.frame_rate);
+    }
+
+    pts = fst->pts;
+    /* packet size & key_frame */
+    header[0] = stream_index;
+    header[1] = 0;
+    if (st->codec.key_frame)
+        header[1] |= FLAG_KEY_FRAME;
+    header[2] = (size >> 16) & 0xff;
+    header[3] = (size >> 8) & 0xff;
+    header[4] = size & 0xff;
+    header[5] = (duration >> 16) & 0xff;
+    header[6] = (duration >> 8) & 0xff;
+    header[7] = duration & 0xff;
+    ffm_write_data(s, header, FRAME_HEADER_SIZE, pts, 1);
+    ffm_write_data(s, buf, size, pts, 0);
+
+    fst->pts += duration;
+    return 0;
+}
+
+static int ffm_write_trailer(AVFormatContext *s)
+{
+    ByteIOContext *pb = &s->pb;
+    FFMContext *ffm = s->priv_data;
+    int i;
+
+    /* flush packets */
+    if (ffm->packet_ptr > ffm->packet)
+        flush_packet(s);
+
+    put_flush_packet(pb);
+
+    if (!url_is_streamed(pb)) {
+        INT64 size;
+        /* update the write offset */
+        size = url_ftell(pb);
+        url_fseek(pb, 8, SEEK_SET);
+        put_be64(pb, size);
+        put_flush_packet(pb);
+    }
+
+    for(i=0;i<s->nb_streams;i++)
+        av_freep(&s->streams[i]->priv_data);
+    return 0;
+}
+
+/* ffm demux */
+
+static int ffm_is_avail_data(AVFormatContext *s, int size)
+{
+    FFMContext *ffm = s->priv_data;
+    offset_t pos, avail_size;
+    int len;
+
+    len = ffm->packet_end - ffm->packet_ptr;
+    if (!ffm_nopts) {
+        /* XXX: I don't understand this test, so I disabled it for testing */
+        if (size <= len)
+            return 1;
+    }
+    pos = url_ftell(&s->pb);
+    if (pos == ffm->write_index) {
+        /* exactly at the end of stream */
+        return 0;
+    } else if (pos < ffm->write_index) {
+        avail_size = ffm->write_index - pos;
+    } else {
+        avail_size = (ffm->file_size - pos) + (ffm->write_index - FFM_PACKET_SIZE);
+    }
+    avail_size = (avail_size / ffm->packet_size) * (ffm->packet_size - FFM_HEADER_SIZE) + len;
+    if (size <= avail_size)
+        return 1;
+    else
+        return 0;
+}
+
+/* first is true if we read the frame header */
+static int ffm_read_data(AVFormatContext *s,
+                         UINT8 *buf, int size, int first)
+{
+    FFMContext *ffm = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    int len, fill_size, size1, frame_offset;
+
+    size1 = size;
+    while (size > 0) {
+    redo:
+        len = ffm->packet_end - ffm->packet_ptr;
+        if (len > size)
+            len = size;
+        if (len == 0) {
+            if (url_ftell(pb) == ffm->file_size)
+                url_fseek(pb, ffm->packet_size, SEEK_SET);
+    retry_read:
+            get_be16(pb); /* PACKET_ID */
+            fill_size = get_be16(pb);
+            ffm->pts = get_be64(pb);
+            frame_offset = get_be16(pb);
+            get_buffer(pb, ffm->packet, ffm->packet_size - FFM_HEADER_SIZE);
+            ffm->packet_end = ffm->packet + (ffm->packet_size - FFM_HEADER_SIZE - fill_size);
+            /* if first packet or resynchronization packet, we must
+               handle it specifically */
+            if (ffm->first_packet || (frame_offset & 0x8000)) {
+                if (!frame_offset) {
+                    /* This packet has no frame headers in it */
+                    if (url_ftell(pb) >= ffm->packet_size * 3) {
+                        url_fseek(pb, -ffm->packet_size * 2, SEEK_CUR);
+                        goto retry_read;
+                    }
+                    /* This is bad, we cannot find a valid frame header */
+                    return 0;
+                }
+                ffm->first_packet = 0;
+                if ((frame_offset & 0x7ffff) < FFM_HEADER_SIZE)
+                    av_abort();
+                ffm->packet_ptr = ffm->packet + (frame_offset & 0x7fff) - FFM_HEADER_SIZE;
+                if (!first)
+                    break;
+            } else {
+                ffm->packet_ptr = ffm->packet;
+            }
+            goto redo;
+        }
+        memcpy(buf, ffm->packet_ptr, len);
+        buf += len;
+        ffm->packet_ptr += len;
+        size -= len;
+        first = 0;
+    }
+    return size1 - size;
+}
+
+
+static int ffm_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+    FFMContext *ffm = s->priv_data;
+    AVStream *st;
+    FFMStream *fst;
+    ByteIOContext *pb = &s->pb;
+    AVCodecContext *codec;
+    int i;
+    UINT32 tag;
+
+    /* header */
+    tag = get_le32(pb);
+    if (tag != MKTAG('F', 'F', 'M', '1'))
+        goto fail;
+    ffm->packet_size = get_be32(pb);
+    if (ffm->packet_size != FFM_PACKET_SIZE)
+        goto fail;
+    ffm->write_index = get_be64(pb);
+    /* get also filesize */
+    if (!url_is_streamed(pb)) {
+        ffm->file_size = url_filesize(url_fileno(pb));
+    } else {
+        ffm->file_size = (UINT64_C(1) << 63) - 1;
+    }
+
+    s->nb_streams = get_be32(pb);
+    get_be32(pb); /* total bitrate */
+    /* read each stream */
+    for(i=0;i<s->nb_streams;i++) {
+        char rc_eq_buf[128];
+
+        st = av_mallocz(sizeof(AVStream));
+        if (!st)
+            goto fail;
+        s->streams[i] = st;
+        fst = av_mallocz(sizeof(FFMStream));
+        if (!fst)
+            goto fail;
+        st->priv_data = fst;
+
+        codec = &st->codec;
+        /* generic info */
+        st->codec.codec_id = get_be32(pb);
+        st->codec.codec_type = get_byte(pb); /* codec_type */
+        codec->bit_rate = get_be32(pb);
+	codec->quality = get_be32(pb);
+        codec->flags = get_be32(pb);
+        /* specific info */
+        switch(codec->codec_type) {
+        case CODEC_TYPE_VIDEO:
+            codec->frame_rate = ((INT64)get_be32(pb) * FRAME_RATE_BASE) / 1000;
+            codec->width = get_be16(pb);
+            codec->height = get_be16(pb);
+            codec->gop_size = get_be16(pb);
+            codec->qmin = get_byte(pb);
+            codec->qmax = get_byte(pb);
+            codec->max_qdiff = get_byte(pb);
+            codec->qcompress = get_be16(pb) / 10000.0;
+            codec->qblur = get_be16(pb) / 10000.0;
+            codec->bit_rate_tolerance = get_be32(pb);
+            codec->rc_eq = strdup(get_strz(pb, rc_eq_buf, sizeof(rc_eq_buf)));
+            codec->rc_max_rate = get_be32(pb);
+            codec->rc_min_rate = get_be32(pb);
+            codec->rc_buffer_size = get_be32(pb);
+            codec->i_quant_factor = get_be64_double(pb);
+            codec->b_quant_factor = get_be64_double(pb);
+            codec->i_quant_offset = get_be64_double(pb);
+            codec->b_quant_offset = get_be64_double(pb);
+            codec->dct_algo = get_be32(pb);
+            break;
+        case CODEC_TYPE_AUDIO:
+            codec->sample_rate = get_be32(pb);
+            codec->channels = get_le16(pb);
+            codec->frame_size = get_le16(pb);
+            break;
+        default:
+            goto fail;
+        }
+
+    }
+
+    /* get until end of block reached */
+    while ((url_ftell(pb) % ffm->packet_size) != 0)
+        get_byte(pb);
+
+    /* init packet demux */
+    ffm->packet_ptr = ffm->packet;
+    ffm->packet_end = ffm->packet;
+    ffm->frame_offset = 0;
+    ffm->pts = 0;
+    ffm->read_state = READ_HEADER;
+    ffm->first_packet = 1;
+    return 0;
+ fail:
+    for(i=0;i<s->nb_streams;i++) {
+        st = s->streams[i];
+        if (st) {
+            av_freep(&st->priv_data);
+            av_free(st);
+        }
+    }
+    return -1;
+}
+
+/* return < 0 if eof */
+static int ffm_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    int size;
+    FFMContext *ffm = s->priv_data;
+    int duration;
+
+    switch(ffm->read_state) {
+    case READ_HEADER:
+        if (!ffm_is_avail_data(s, FRAME_HEADER_SIZE)) {
+            return -EAGAIN;
+        }
+#if 0
+        printf("pos=%08Lx spos=%Lx, write_index=%Lx size=%Lx\n",
+               url_ftell(&s->pb), s->pb.pos, ffm->write_index, ffm->file_size);
+#endif
+        if (ffm_read_data(s, ffm->header, FRAME_HEADER_SIZE, 1) != 
+            FRAME_HEADER_SIZE)
+            return -EAGAIN;
+#if 0
+        {
+            int i;
+            for(i=0;i<FRAME_HEADER_SIZE;i++)
+                printf("%02x ", ffm->header[i]);
+            printf("\n");
+        }
+#endif
+        ffm->read_state = READ_DATA;
+        /* fall thru */
+    case READ_DATA:
+        size = (ffm->header[2] << 16) | (ffm->header[3] << 8) | ffm->header[4];
+        if (!ffm_is_avail_data(s, size)) {
+            return -EAGAIN;
+        }
+
+        duration = (ffm->header[5] << 16) | (ffm->header[6] << 8) | ffm->header[7];
+
+        av_new_packet(pkt, size);
+        pkt->stream_index = ffm->header[0];
+        if (ffm->header[1] & FLAG_KEY_FRAME)
+            pkt->flags |= PKT_FLAG_KEY;
+
+        ffm->read_state = READ_HEADER;
+        if (ffm_read_data(s, pkt->data, size, 0) != size) {
+            /* bad case: desynchronized packet. we cancel all the packet loading */
+            av_free_packet(pkt);
+            return -EAGAIN;
+        }
+        pkt->pts = ffm->pts;
+        pkt->duration = duration;
+        break;
+    }
+    return 0;
+}
+
+//#define DEBUG_SEEK
+
+/* pos is between 0 and file_size - FFM_PACKET_SIZE. It is translated
+   by the write position inside this function */
+static void ffm_seek1(AVFormatContext *s, offset_t pos1)
+{
+    FFMContext *ffm = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    offset_t pos;
+
+    pos = pos1 + ffm->write_index;
+    if (pos >= ffm->file_size)
+        pos -= (ffm->file_size - FFM_PACKET_SIZE);
+#ifdef DEBUG_SEEK
+    printf("seek to %Lx -> %Lx\n", pos1, pos);
+#endif
+    url_fseek(pb, pos, SEEK_SET);
+}
+
+static INT64 get_pts(AVFormatContext *s, offset_t pos)
+{
+    ByteIOContext *pb = &s->pb;
+    INT64 pts;
+
+    ffm_seek1(s, pos);
+    url_fskip(pb, 4);
+    pts = get_be64(pb);
+#ifdef DEBUG_SEEK
+    printf("pts=%0.6f\n", pts / 1000000.0);
+#endif
+    return pts;
+}
+
+/* seek to a given time in the file. The file read pointer is
+   positionned at or before pts. XXX: the following code is quite
+   approximative */
+static int ffm_seek(AVFormatContext *s, INT64 wanted_pts)
+{
+    FFMContext *ffm = s->priv_data;
+    offset_t pos_min, pos_max, pos;
+    INT64 pts_min, pts_max, pts;
+    double pos1;
+
+#ifdef DEBUG_SEEK
+    printf("wanted_pts=%0.6f\n", wanted_pts / 1000000.0);
+#endif
+    /* find the position using linear interpolation (better than
+       dichotomy in typical cases) */
+    pos_min = 0;
+    pos_max = ffm->file_size - 2 * FFM_PACKET_SIZE;
+    while (pos_min <= pos_max) {
+        pts_min = get_pts(s, pos_min);
+        pts_max = get_pts(s, pos_max);
+        /* linear interpolation */
+        pos1 = (double)(pos_max - pos_min) * (double)(wanted_pts - pts_min) /
+            (double)(pts_max - pts_min);
+        pos = (((INT64)pos1) / FFM_PACKET_SIZE) * FFM_PACKET_SIZE;
+        if (pos <= pos_min)
+            pos = pos_min;
+        else if (pos >= pos_max)
+            pos = pos_max;
+        pts = get_pts(s, pos);
+        /* check if we are lucky */
+        if (pts == wanted_pts) {
+            goto found;
+        } else if (pts > wanted_pts) {
+            pos_max = pos - FFM_PACKET_SIZE;
+        } else {
+            pos_min = pos + FFM_PACKET_SIZE;
+        }
+    }
+    pos = pos_min;
+    if (pos > 0)
+        pos -= FFM_PACKET_SIZE;
+ found:
+    ffm_seek1(s, pos);
+    return 0;
+}
+
+offset_t ffm_read_write_index(int fd)
+{
+    UINT8 buf[8];
+    offset_t pos;
+    int i;
+
+    lseek(fd, 8, SEEK_SET);
+    read(fd, buf, 8);
+    pos = 0;
+    for(i=0;i<8;i++)
+        pos |= buf[i] << (56 - i * 8);
+    return pos;
+}
+
+void ffm_write_write_index(int fd, offset_t pos)
+{
+    UINT8 buf[8];
+    int i;
+
+    for(i=0;i<8;i++)
+        buf[i] = (pos >> (56 - i * 8)) & 0xff;
+    lseek(fd, 8, SEEK_SET);
+    write(fd, buf, 8);
+}
+
+void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size)
+{
+    FFMContext *ffm = s->priv_data;
+    ffm->write_index = pos;
+    ffm->file_size = file_size;
+}
+
+static int ffm_read_close(AVFormatContext *s)
+{
+    AVStream *st;
+    int i;
+
+    for(i=0;i<s->nb_streams;i++) {
+        st = s->streams[i];
+        av_freep(&st->priv_data);
+    }
+    return 0;
+}
+
+static int ffm_probe(AVProbeData *p)
+{
+    if (p->buf_size >= 4 &&
+        p->buf[0] == 'F' && p->buf[1] == 'F' && p->buf[2] == 'M' && 
+        p->buf[3] == '1')
+        return AVPROBE_SCORE_MAX + 1;
+    return 0;
+}
+
+static AVInputFormat ffm_iformat = {
+    "ffm",
+    "ffm format",
+    sizeof(FFMContext),
+    ffm_probe,
+    ffm_read_header,
+    ffm_read_packet,
+    ffm_read_close,
+    ffm_seek,
+};
+
+static AVOutputFormat ffm_oformat = {
+    "ffm",
+    "ffm format",
+    "",
+    "ffm",
+    sizeof(FFMContext),
+    /* not really used */
+    CODEC_ID_MP2,
+    CODEC_ID_MPEG1VIDEO,
+    ffm_write_header,
+    ffm_write_packet,
+    ffm_write_trailer,
+};
+
+int ffm_init(void)
+{
+    av_register_input_format(&ffm_iformat);
+    av_register_output_format(&ffm_oformat);
+    return 0;
+}

libavformat/file.c

@@ -0,0 +1,130 @@
+/*
+ * Buffered file io for ffmpeg system
+ * Copyright (c) 2001 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include <fcntl.h>
+#ifndef CONFIG_WIN32
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#else
+#include <io.h>
+#define open(fname,oflag,pmode) _open(fname,oflag,pmode)
+#endif /* CONFIG_WIN32 */
+
+
+/* standard file protocol */
+
+static int file_open(URLContext *h, const char *filename, int flags)
+{
+    int access;
+    int fd;
+
+    if (flags & URL_WRONLY) {
+        access = O_CREAT | O_TRUNC | O_WRONLY;
+    } else {
+        access = O_RDONLY;
+    }
+#ifdef CONFIG_WIN32
+    access |= O_BINARY;
+#endif
+    fd = open(filename, access, 0666);
+    if (fd < 0)
+        return -ENOENT;
+    h->priv_data = (void *)fd;
+    return 0;
+}
+
+static int file_read(URLContext *h, unsigned char *buf, int size)
+{
+    int fd = (int)h->priv_data;
+    return read(fd, buf, size);
+}
+
+static int file_write(URLContext *h, unsigned char *buf, int size)
+{
+    int fd = (int)h->priv_data;
+    return write(fd, buf, size);
+}
+
+/* XXX: use llseek */
+static offset_t file_seek(URLContext *h, offset_t pos, int whence)
+{
+    int fd = (int)h->priv_data;
+#ifdef CONFIG_WIN32
+    return _lseeki64(fd, pos, whence);
+#else
+    return lseek(fd, pos, whence);
+#endif
+}
+
+static int file_close(URLContext *h)
+{
+    int fd = (int)h->priv_data;
+    return close(fd);
+}
+
+URLProtocol file_protocol = {
+    "file",
+    file_open,
+    file_read,
+    file_write,
+    file_seek,
+    file_close,
+};
+
+/* pipe protocol */
+
+static int pipe_open(URLContext *h, const char *filename, int flags)
+{
+    int fd;
+
+    if (flags & URL_WRONLY) {
+        fd = 1;
+    } else {
+        fd = 0;
+    }
+    h->priv_data = (void *)fd;
+    return 0;
+}
+
+static int pipe_read(URLContext *h, unsigned char *buf, int size)
+{
+    int fd = (int)h->priv_data;
+    return read(fd, buf, size);
+}
+
+static int pipe_write(URLContext *h, unsigned char *buf, int size)
+{
+    int fd = (int)h->priv_data;
+    return write(fd, buf, size);
+}
+
+static int pipe_close(URLContext *h)
+{
+    return 0;
+}
+
+URLProtocol pipe_protocol = {
+    "pipe",
+    pipe_open,
+    pipe_read,
+    pipe_write,
+    NULL,
+    pipe_close,
+};

libavformat/framehook.c

@@ -0,0 +1,102 @@
+/*
+ * Video processing hooks
+ * Copyright (c) 2000, 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <errno.h>
+#include "config.h"
+#include "framehook.h"
+#include "avformat.h"
+
+#ifdef HAVE_VHOOK
+#include <dlfcn.h>
+#endif
+
+
+typedef struct _FrameHookEntry {
+    struct _FrameHookEntry *next;
+    FrameHookConfigureFn Configure;
+    FrameHookProcessFn Process;
+    void *ctx;
+} FrameHookEntry;
+
+static FrameHookEntry *first_hook;
+
+/* Returns 0 on OK */
+int frame_hook_add(int argc, char *argv[])
+{
+#ifdef HAVE_VHOOK
+    void *loaded;
+    FrameHookEntry *fhe, **fhep;
+
+    if (argc < 1) {
+        return ENOENT;
+    }
+
+    loaded = dlopen(argv[0], RTLD_NOW);
+    if (!loaded) {
+        fprintf(stderr, "%s\n", dlerror());
+        return -1;
+    }
+
+    fhe = av_mallocz(sizeof(*fhe));
+    if (!fhe) {
+        return errno;
+    }
+
+    fhe->Configure = dlsym(loaded, "Configure");
+    fhe->Process = dlsym(loaded, "Process");
+
+    if (!fhe->Process) {
+        fprintf(stderr, "Failed to find Process entrypoint in %s\n", argv[0]);
+        return -1;
+    }
+
+    if (!fhe->Configure && argc > 1) {
+        fprintf(stderr, "Failed to find Configure entrypoint in %s\n", argv[0]);
+        return -1;
+    }
+
+    if (argc > 1 || fhe->Configure) {
+        if (fhe->Configure(&fhe->ctx, argc, argv)) {
+            fprintf(stderr, "Failed to Configure %s\n", argv[0]);
+            return -1;
+        }
+    }
+
+    for (fhep = &first_hook; *fhep; fhep = &((*fhep)->next)) {
+    }
+
+    *fhep = fhe;
+
+    return 0;
+#else
+    fprintf(stderr, "Video hooking not compiled into this version\n");
+    return 1;
+#endif
+}
+
+void frame_hook_process(AVPicture *pict, enum PixelFormat pix_fmt, int width, int height)
+{
+    if (first_hook) {
+        FrameHookEntry *fhe;
+        INT64 pts = av_gettime();
+
+        for (fhe = first_hook; fhe; fhe = fhe->next) {
+            fhe->Process(fhe->ctx, pict, pix_fmt, width, height, pts);
+        }
+    }
+}

libavformat/framehook.h

@@ -0,0 +1,19 @@
+#ifndef _FRAMEHOOK_H
+#define _FRAMEHOOK_H
+
+/*
+ * Prototypes for interface to .so that implement a video processing hook 
+ */
+
+#include "avcodec.h"
+
+/* Function must be called 'Configure' */
+typedef int (*FrameHookConfigureFn)(void **ctxp, int argc, char *argv[]);
+
+/* Function must be called 'Process' */
+typedef void (*FrameHookProcessFn)(void *ctx, struct AVPicture *pict, enum PixelFormat pix_fmt, int width, int height, INT64 pts);
+
+extern int frame_hook_add(int argc, char *argv[]);
+extern void frame_hook_process(struct AVPicture *pict, enum PixelFormat pix_fmt, int width, int height);
+
+#endif

libavformat/gif.c

@@ -0,0 +1,375 @@
+/*
+ * Animated GIF encoder
+ * Copyright (c) 2000 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * First version by Francois Revol revol@free.fr
+ *
+ * Features and limitations:
+ * - currently no compression is performed,
+ *   in fact the size of the data is 9/8 the size of the image in 8bpp
+ * - uses only a global standard palette
+ * - tested with IE 5.0, Opera for BeOS, NetPositive (BeOS), and Mozilla (BeOS).
+ *
+ * Reference documents:
+ * http://www.goice.co.jp/member/mo/formats/gif.html
+ * http://astronomy.swin.edu.au/pbourke/dataformats/gif/
+ * http://www.dcs.ed.ac.uk/home/mxr/gfx/2d/GIF89a.txt
+ *
+ * this url claims to have an LZW algorithm not covered by Unisys patent:
+ * http://www.msg.net/utility/whirlgif/gifencod.html
+ * could help reduce the size of the files _a lot_...
+ * some sites mentions an RLE type compression also.
+ */
+
+#include "avformat.h"
+
+/* bitstream minipacket size */
+#define GIF_CHUNKS 100
+
+/* slows down the decoding (and some browsers doesn't like it) */
+/* #define GIF_ADD_APP_HEADER */
+
+typedef struct {
+    unsigned char r;
+    unsigned char g;
+    unsigned char b;
+} rgb_triplet;
+
+/* we use the standard 216 color palette */
+
+/* this script was used to create the palette:
+ * for r in 00 33 66 99 cc ff; do for g in 00 33 66 99 cc ff; do echo -n "    "; for b in 00 33 66 99 cc ff; do 
+ *   echo -n "{ 0x$r, 0x$g, 0x$b }, "; done; echo ""; done; done
+ */
+
+static const rgb_triplet gif_clut[216] = {
+    { 0x00, 0x00, 0x00 }, { 0x00, 0x00, 0x33 }, { 0x00, 0x00, 0x66 }, { 0x00, 0x00, 0x99 }, { 0x00, 0x00, 0xcc }, { 0x00, 0x00, 0xff },
+    { 0x00, 0x33, 0x00 }, { 0x00, 0x33, 0x33 }, { 0x00, 0x33, 0x66 }, { 0x00, 0x33, 0x99 }, { 0x00, 0x33, 0xcc }, { 0x00, 0x33, 0xff },
+    { 0x00, 0x66, 0x00 }, { 0x00, 0x66, 0x33 }, { 0x00, 0x66, 0x66 }, { 0x00, 0x66, 0x99 }, { 0x00, 0x66, 0xcc }, { 0x00, 0x66, 0xff },
+    { 0x00, 0x99, 0x00 }, { 0x00, 0x99, 0x33 }, { 0x00, 0x99, 0x66 }, { 0x00, 0x99, 0x99 }, { 0x00, 0x99, 0xcc }, { 0x00, 0x99, 0xff },
+    { 0x00, 0xcc, 0x00 }, { 0x00, 0xcc, 0x33 }, { 0x00, 0xcc, 0x66 }, { 0x00, 0xcc, 0x99 }, { 0x00, 0xcc, 0xcc }, { 0x00, 0xcc, 0xff },
+    { 0x00, 0xff, 0x00 }, { 0x00, 0xff, 0x33 }, { 0x00, 0xff, 0x66 }, { 0x00, 0xff, 0x99 }, { 0x00, 0xff, 0xcc }, { 0x00, 0xff, 0xff },
+    { 0x33, 0x00, 0x00 }, { 0x33, 0x00, 0x33 }, { 0x33, 0x00, 0x66 }, { 0x33, 0x00, 0x99 }, { 0x33, 0x00, 0xcc }, { 0x33, 0x00, 0xff },
+    { 0x33, 0x33, 0x00 }, { 0x33, 0x33, 0x33 }, { 0x33, 0x33, 0x66 }, { 0x33, 0x33, 0x99 }, { 0x33, 0x33, 0xcc }, { 0x33, 0x33, 0xff },
+    { 0x33, 0x66, 0x00 }, { 0x33, 0x66, 0x33 }, { 0x33, 0x66, 0x66 }, { 0x33, 0x66, 0x99 }, { 0x33, 0x66, 0xcc }, { 0x33, 0x66, 0xff },
+    { 0x33, 0x99, 0x00 }, { 0x33, 0x99, 0x33 }, { 0x33, 0x99, 0x66 }, { 0x33, 0x99, 0x99 }, { 0x33, 0x99, 0xcc }, { 0x33, 0x99, 0xff },
+    { 0x33, 0xcc, 0x00 }, { 0x33, 0xcc, 0x33 }, { 0x33, 0xcc, 0x66 }, { 0x33, 0xcc, 0x99 }, { 0x33, 0xcc, 0xcc }, { 0x33, 0xcc, 0xff },
+    { 0x33, 0xff, 0x00 }, { 0x33, 0xff, 0x33 }, { 0x33, 0xff, 0x66 }, { 0x33, 0xff, 0x99 }, { 0x33, 0xff, 0xcc }, { 0x33, 0xff, 0xff },
+    { 0x66, 0x00, 0x00 }, { 0x66, 0x00, 0x33 }, { 0x66, 0x00, 0x66 }, { 0x66, 0x00, 0x99 }, { 0x66, 0x00, 0xcc }, { 0x66, 0x00, 0xff },
+    { 0x66, 0x33, 0x00 }, { 0x66, 0x33, 0x33 }, { 0x66, 0x33, 0x66 }, { 0x66, 0x33, 0x99 }, { 0x66, 0x33, 0xcc }, { 0x66, 0x33, 0xff },
+    { 0x66, 0x66, 0x00 }, { 0x66, 0x66, 0x33 }, { 0x66, 0x66, 0x66 }, { 0x66, 0x66, 0x99 }, { 0x66, 0x66, 0xcc }, { 0x66, 0x66, 0xff },
+    { 0x66, 0x99, 0x00 }, { 0x66, 0x99, 0x33 }, { 0x66, 0x99, 0x66 }, { 0x66, 0x99, 0x99 }, { 0x66, 0x99, 0xcc }, { 0x66, 0x99, 0xff },
+    { 0x66, 0xcc, 0x00 }, { 0x66, 0xcc, 0x33 }, { 0x66, 0xcc, 0x66 }, { 0x66, 0xcc, 0x99 }, { 0x66, 0xcc, 0xcc }, { 0x66, 0xcc, 0xff },
+    { 0x66, 0xff, 0x00 }, { 0x66, 0xff, 0x33 }, { 0x66, 0xff, 0x66 }, { 0x66, 0xff, 0x99 }, { 0x66, 0xff, 0xcc }, { 0x66, 0xff, 0xff },
+    { 0x99, 0x00, 0x00 }, { 0x99, 0x00, 0x33 }, { 0x99, 0x00, 0x66 }, { 0x99, 0x00, 0x99 }, { 0x99, 0x00, 0xcc }, { 0x99, 0x00, 0xff },
+    { 0x99, 0x33, 0x00 }, { 0x99, 0x33, 0x33 }, { 0x99, 0x33, 0x66 }, { 0x99, 0x33, 0x99 }, { 0x99, 0x33, 0xcc }, { 0x99, 0x33, 0xff },
+    { 0x99, 0x66, 0x00 }, { 0x99, 0x66, 0x33 }, { 0x99, 0x66, 0x66 }, { 0x99, 0x66, 0x99 }, { 0x99, 0x66, 0xcc }, { 0x99, 0x66, 0xff },
+    { 0x99, 0x99, 0x00 }, { 0x99, 0x99, 0x33 }, { 0x99, 0x99, 0x66 }, { 0x99, 0x99, 0x99 }, { 0x99, 0x99, 0xcc }, { 0x99, 0x99, 0xff },
+    { 0x99, 0xcc, 0x00 }, { 0x99, 0xcc, 0x33 }, { 0x99, 0xcc, 0x66 }, { 0x99, 0xcc, 0x99 }, { 0x99, 0xcc, 0xcc }, { 0x99, 0xcc, 0xff },
+    { 0x99, 0xff, 0x00 }, { 0x99, 0xff, 0x33 }, { 0x99, 0xff, 0x66 }, { 0x99, 0xff, 0x99 }, { 0x99, 0xff, 0xcc }, { 0x99, 0xff, 0xff },
+    { 0xcc, 0x00, 0x00 }, { 0xcc, 0x00, 0x33 }, { 0xcc, 0x00, 0x66 }, { 0xcc, 0x00, 0x99 }, { 0xcc, 0x00, 0xcc }, { 0xcc, 0x00, 0xff },
+    { 0xcc, 0x33, 0x00 }, { 0xcc, 0x33, 0x33 }, { 0xcc, 0x33, 0x66 }, { 0xcc, 0x33, 0x99 }, { 0xcc, 0x33, 0xcc }, { 0xcc, 0x33, 0xff },
+    { 0xcc, 0x66, 0x00 }, { 0xcc, 0x66, 0x33 }, { 0xcc, 0x66, 0x66 }, { 0xcc, 0x66, 0x99 }, { 0xcc, 0x66, 0xcc }, { 0xcc, 0x66, 0xff },
+    { 0xcc, 0x99, 0x00 }, { 0xcc, 0x99, 0x33 }, { 0xcc, 0x99, 0x66 }, { 0xcc, 0x99, 0x99 }, { 0xcc, 0x99, 0xcc }, { 0xcc, 0x99, 0xff },
+    { 0xcc, 0xcc, 0x00 }, { 0xcc, 0xcc, 0x33 }, { 0xcc, 0xcc, 0x66 }, { 0xcc, 0xcc, 0x99 }, { 0xcc, 0xcc, 0xcc }, { 0xcc, 0xcc, 0xff },
+    { 0xcc, 0xff, 0x00 }, { 0xcc, 0xff, 0x33 }, { 0xcc, 0xff, 0x66 }, { 0xcc, 0xff, 0x99 }, { 0xcc, 0xff, 0xcc }, { 0xcc, 0xff, 0xff },
+    { 0xff, 0x00, 0x00 }, { 0xff, 0x00, 0x33 }, { 0xff, 0x00, 0x66 }, { 0xff, 0x00, 0x99 }, { 0xff, 0x00, 0xcc }, { 0xff, 0x00, 0xff },
+    { 0xff, 0x33, 0x00 }, { 0xff, 0x33, 0x33 }, { 0xff, 0x33, 0x66 }, { 0xff, 0x33, 0x99 }, { 0xff, 0x33, 0xcc }, { 0xff, 0x33, 0xff },
+    { 0xff, 0x66, 0x00 }, { 0xff, 0x66, 0x33 }, { 0xff, 0x66, 0x66 }, { 0xff, 0x66, 0x99 }, { 0xff, 0x66, 0xcc }, { 0xff, 0x66, 0xff },
+    { 0xff, 0x99, 0x00 }, { 0xff, 0x99, 0x33 }, { 0xff, 0x99, 0x66 }, { 0xff, 0x99, 0x99 }, { 0xff, 0x99, 0xcc }, { 0xff, 0x99, 0xff },
+    { 0xff, 0xcc, 0x00 }, { 0xff, 0xcc, 0x33 }, { 0xff, 0xcc, 0x66 }, { 0xff, 0xcc, 0x99 }, { 0xff, 0xcc, 0xcc }, { 0xff, 0xcc, 0xff },
+    { 0xff, 0xff, 0x00 }, { 0xff, 0xff, 0x33 }, { 0xff, 0xff, 0x66 }, { 0xff, 0xff, 0x99 }, { 0xff, 0xff, 0xcc }, { 0xff, 0xff, 0xff },
+};
+
+/* The GIF format uses reversed order for bitstreams... */
+/* at least they don't use PDP_ENDIAN :) */
+/* so we 'extend' PutBitContext. hmmm, OOP :) */
+/* seems this thing changed slightly since I wrote it... */
+
+#ifdef ALT_BITSTREAM_WRITER
+# error no ALT_BITSTREAM_WRITER support for now
+#endif
+
+static void gif_put_bits_rev(PutBitContext *s, int n, unsigned int value)
+{
+    unsigned int bit_buf;
+    int bit_cnt;
+
+#ifdef STATS
+    st_out_bit_counts[st_current_index] += n;
+#endif
+    //    printf("put_bits=%d %x\n", n, value);
+    assert(n == 32 || value < (1U << n));
+
+    bit_buf = s->bit_buf;
+    bit_cnt = 32 - s->bit_left; /* XXX:lazyness... was = s->bit_cnt; */
+
+    //    printf("n=%d value=%x cnt=%d buf=%x\n", n, value, bit_cnt, bit_buf);
+    /* XXX: optimize */
+    if (n < (32-bit_cnt)) {
+        bit_buf |= value << (bit_cnt);
+        bit_cnt+=n;
+    } else {
+        bit_buf |= value << (bit_cnt);
+        
+        *s->buf_ptr = bit_buf & 0xff;
+        s->buf_ptr[1] = (bit_buf >> 8) & 0xff;
+        s->buf_ptr[2] = (bit_buf >> 16) & 0xff;
+        s->buf_ptr[3] = (bit_buf >> 24) & 0xff;
+        
+        //printf("bitbuf = %08x\n", bit_buf);
+        s->buf_ptr+=4;
+        if (s->buf_ptr >= s->buf_end)
+            puts("bit buffer overflow !!"); // should never happen ! who got rid of the callback ???
+//            flush_buffer_rev(s);
+        bit_cnt=bit_cnt + n - 32;
+        if (bit_cnt == 0) {
+            bit_buf = 0;
+        } else {
+            bit_buf = value >> (n - bit_cnt);
+        }
+    }
+
+    s->bit_buf = bit_buf;
+    s->bit_left = 32 - bit_cnt;
+}
+
+/* pad the end of the output stream with zeros */
+static void gif_flush_put_bits_rev(PutBitContext *s)
+{
+    while (s->bit_left < 32) {
+        /* XXX: should test end of buffer */
+        *s->buf_ptr++=s->bit_buf & 0xff;
+        s->bit_buf>>=8;
+        s->bit_left+=8;
+    }
+//    flush_buffer_rev(s);
+    s->bit_left=32;
+    s->bit_buf=0;
+}
+
+/* !RevPutBitContext */
+
+typedef struct {
+    UINT8 buffer[100]; /* data chunks */
+    INT64 time, file_time;
+} GIFContext;
+
+static int gif_write_header(AVFormatContext *s)
+{
+    GIFContext *gif = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    AVCodecContext *enc, *video_enc;
+    int i, width, height, rate;
+
+/* XXX: do we reject audio streams or just ignore them ?
+    if(s->nb_streams > 1)
+        return -1;
+*/
+    gif->time = 0;
+    gif->file_time = 0;
+
+    video_enc = NULL;
+    for(i=0;i<s->nb_streams;i++) {
+        enc = &s->streams[i]->codec;
+        if (enc->codec_type != CODEC_TYPE_AUDIO)
+            video_enc = enc;
+    }
+
+    if (!video_enc) {
+        av_free(gif);
+        return -1;
+    } else {
+        width = video_enc->width;
+        height = video_enc->height;
+        rate = video_enc->frame_rate;
+    }
+
+    /* XXX: is it allowed ? seems to work so far... */
+    video_enc->pix_fmt = PIX_FMT_RGB24;
+
+    /* GIF header */
+
+    put_tag(pb, "GIF");
+    put_tag(pb, "89a");
+    put_le16(pb, width);
+    put_le16(pb, height);
+
+    put_byte(pb, 0xf7); /* flags: global clut, 256 entries */
+    put_byte(pb, 0x1f); /* background color index */
+    put_byte(pb, 0); /* aspect ratio */
+
+    /* the global palette */
+
+    put_buffer(pb, (unsigned char *)gif_clut, 216*3);
+    for(i=0;i<((256-216)*3);i++)
+       put_byte(pb, 0);
+
+    /* application extension header */
+    /* XXX: not really sure what to put in here... */
+#ifdef GIF_ADD_APP_HEADER
+    put_byte(pb, 0x21);
+    put_byte(pb, 0xff);
+    put_byte(pb, 0x0b);
+    put_tag(pb, "NETSCAPE2.0");
+    put_byte(pb, 0x03);
+    put_byte(pb, 0x01);
+    put_byte(pb, 0x00);
+    put_byte(pb, 0x00);
+#endif
+
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+/* this is maybe slow, but allows for extensions */
+static inline unsigned char gif_clut_index(rgb_triplet *clut, UINT8 r, UINT8 g, UINT8 b)
+{
+    return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
+}
+
+/* chunk writer callback */
+/* !!! XXX:deprecated
+static void gif_put_chunk(void *pbctx, UINT8 *buffer, int count)
+{
+    ByteIOContext *pb = (ByteIOContext *)pbctx;
+    put_byte(pb, (UINT8)count);
+    put_buffer(pb, buffer, count);
+}
+*/
+
+static int gif_write_video(AVFormatContext *s, 
+                           AVCodecContext *enc, UINT8 *buf, int size)
+{
+    ByteIOContext *pb = &s->pb;
+    GIFContext *gif = s->priv_data;
+    int i, left, jiffies;
+    INT64 delay;
+    PutBitContext p;
+    UINT8 buffer[200]; /* 100 * 9 / 8 = 113 */
+
+
+    /* graphic control extension block */
+    put_byte(pb, 0x21);
+    put_byte(pb, 0xf9);
+    put_byte(pb, 0x04); /* block size */
+    put_byte(pb, 0x04); /* flags */
+    
+    /* 1 jiffy is 1/70 s */
+    /* the delay_time field indicates the number of jiffies - 1 */
+    delay = gif->file_time - gif->time;
+
+    /* XXX: should use delay, in order to be more accurate */
+    /* instead of using the same rounded value each time */
+    /* XXX: don't even remember if I really use it for now */
+    jiffies = (70*FRAME_RATE_BASE/enc->frame_rate) - 1;
+
+    put_le16(pb, jiffies);
+
+    put_byte(pb, 0x1f); /* transparent color index */
+    put_byte(pb, 0x00);
+
+    /* image block */
+
+    put_byte(pb, 0x2c);
+    put_le16(pb, 0);
+    put_le16(pb, 0);
+    put_le16(pb, enc->width);
+    put_le16(pb, enc->height);
+    put_byte(pb, 0x00); /* flags */
+    /* no local clut */
+
+    put_byte(pb, 0x08);
+
+    left=size/3;
+
+    init_put_bits(&p, buffer, 130, NULL, NULL);
+
+/*
+ * the thing here is the bitstream is written as little packets, with a size byte before
+ * but it's still the same bitstream between packets (no flush !)
+ */
+
+    while(left>0) {
+
+        gif_put_bits_rev(&p, 9, 0x0100); /* clear code */
+
+        for(i=0;i<GIF_CHUNKS;i++) {
+	    gif_put_bits_rev(&p, 9, gif_clut_index(NULL, *buf, buf[1], buf[2]));
+            buf+=3;
+        }
+
+        if(left<=GIF_CHUNKS) {
+            gif_put_bits_rev(&p, 9, 0x101); /* end of stream */
+            gif_flush_put_bits_rev(&p);
+        }
+        if(pbBufPtr(&p) - p.buf > 0) {
+            put_byte(pb, pbBufPtr(&p) - p.buf); /* byte count of the packet */
+            put_buffer(pb, p.buf, pbBufPtr(&p) - p.buf); /* the actual buffer */
+            p.data_out_size += pbBufPtr(&p) - p.buf;
+            p.buf_ptr = p.buf; /* dequeue the bytes off the bitstream */
+        }
+        if(left<=GIF_CHUNKS) {
+            put_byte(pb, 0x00); /* end of image block */
+        }
+
+        left-=GIF_CHUNKS;
+    }
+
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static int gif_write_packet(AVFormatContext *s, int stream_index, 
+                           UINT8 *buf, int size, int force_pts)
+{
+    AVCodecContext *codec = &s->streams[stream_index]->codec;
+    if (codec->codec_type == CODEC_TYPE_AUDIO)
+        return 0; /* just ignore audio */
+    else
+        return gif_write_video(s, codec, buf, size);
+}
+
+static int gif_write_trailer(AVFormatContext *s)
+{
+    ByteIOContext *pb = &s->pb;
+
+    put_byte(pb, 0x3b);
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static AVOutputFormat gif_oformat = {
+    "gif",
+    "GIF Animation",
+    "image/gif",
+    "gif",
+    sizeof(GIFContext),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    gif_write_header,
+    gif_write_packet,
+    gif_write_trailer,
+};
+
+int gif_init(void)
+{
+    av_register_output_format(&gif_oformat);
+    return 0;
+}

libavformat/grab.c

@@ -0,0 +1,829 @@
+/*
+ * Linux video grab interface
+ * Copyright (c) 2000,2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include <linux/videodev.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+#include <time.h>
+
+typedef struct {
+    int fd;
+    int frame_format; /* see VIDEO_PALETTE_xxx */
+    int use_mmap;
+    int width, height;
+    int frame_rate;
+    INT64 time_frame;
+    int frame_size;
+    struct video_capability video_cap;
+    struct video_audio audio_saved;
+    UINT8 *video_buf;
+    struct video_mbuf gb_buffers;
+    struct video_mmap gb_buf;
+    int gb_frame;
+
+    /* ATI All In Wonder specific stuff */
+    /* XXX: remove and merge in libavcodec/imgconvert.c */
+    int aiw_enabled;
+    int deint;
+    int halfw;
+    UINT8 *src_mem;
+    UINT8 *lum_m4_mem;
+} VideoData;
+
+static int aiw_init(VideoData *s);
+static int aiw_read_picture(VideoData *s, uint8_t *data);
+static int aiw_close(VideoData *s);
+
+const char *v4l_device = "/dev/video";
+
+static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
+{
+    VideoData *s = s1->priv_data;
+    AVStream *st;
+    int width, height;
+    int video_fd, frame_size;
+    int ret, frame_rate;
+    int desired_palette;
+    struct video_audio audio;
+
+    if (!ap || ap->width <= 0 || ap->height <= 0 || ap->frame_rate <= 0)
+        return -1;
+    
+    width = ap->width;
+    height = ap->height;
+    frame_rate = ap->frame_rate;
+
+    st = av_new_stream(s1, 0);
+    if (!st)
+        return -ENOMEM;
+
+    s->width = width;
+    s->height = height;
+    s->frame_rate = frame_rate;
+
+    video_fd = open(v4l_device, O_RDWR);
+    if (video_fd < 0) {
+        perror(v4l_device);
+        goto fail;
+    }
+    
+    if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
+        perror("VIDIOCGCAP");
+        goto fail;
+    }
+
+    if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
+        fprintf(stderr, "Fatal: grab device does not handle capture\n");
+        goto fail;
+    }
+
+    desired_palette = -1;
+    if (st->codec.pix_fmt == PIX_FMT_YUV420P) {
+        desired_palette = VIDEO_PALETTE_YUV420P;
+    } else if (st->codec.pix_fmt == PIX_FMT_YUV422) {
+        desired_palette = VIDEO_PALETTE_YUV422;
+    } else if (st->codec.pix_fmt == PIX_FMT_BGR24) {
+        desired_palette = VIDEO_PALETTE_RGB24;
+    }    
+    
+    /* unmute audio */
+    audio.audio = 0;
+    ioctl(video_fd, VIDIOCGAUDIO, &audio);
+    memcpy(&s->audio_saved, &audio, sizeof(audio));
+    audio.flags &= ~VIDEO_AUDIO_MUTE;
+    ioctl(video_fd, VIDIOCSAUDIO, &audio);
+
+    ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
+    if (ret < 0) {
+        /* try to use read based access */
+        struct video_window win;
+        struct video_picture pict;
+        int val;
+
+        win.x = 0;
+        win.y = 0;
+        win.width = width;
+        win.height = height;
+        win.chromakey = -1;
+        win.flags = 0;
+
+        ioctl(video_fd, VIDIOCSWIN, &win);
+
+        ioctl(video_fd, VIDIOCGPICT, &pict);
+#if 0
+        printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
+               pict.colour,
+               pict.hue,
+               pict.brightness,
+               pict.contrast,
+               pict.whiteness);
+#endif        
+        /* try to choose a suitable video format */
+        pict.palette = desired_palette;
+        if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
+            pict.palette=VIDEO_PALETTE_YUV420P;
+            ret = ioctl(video_fd, VIDIOCSPICT, &pict);
+            if (ret < 0) {
+                pict.palette=VIDEO_PALETTE_YUV422;
+                ret = ioctl(video_fd, VIDIOCSPICT, &pict);
+                if (ret < 0) {
+                    pict.palette=VIDEO_PALETTE_RGB24;
+                    ret = ioctl(video_fd, VIDIOCSPICT, &pict);
+                    if (ret < 0) 
+                        goto fail1;
+                }
+            }
+        }
+
+        s->frame_format = pict.palette;
+
+        val = 1;
+        ioctl(video_fd, VIDIOCCAPTURE, &val);
+
+        s->time_frame = av_gettime();
+        s->use_mmap = 0;
+        
+        /* ATI All In Wonder automatic activation */
+        if (!strcmp(s->video_cap.name, "Km")) {
+            if (aiw_init(s) < 0)
+                goto fail;
+            s->aiw_enabled = 1;
+            /* force 420P format because convertion from YUV422 to YUV420P
+               is done in this driver (ugly) */
+            s->frame_format = VIDEO_PALETTE_YUV420P;
+        }
+    } else {
+        s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
+        if ((unsigned char*)-1 == s->video_buf) {
+            perror("mmap");
+            goto fail;
+        }
+        s->gb_frame = 0;
+        s->time_frame = av_gettime();
+        
+        /* start to grab the first frame */
+        s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
+        s->gb_buf.height = height;
+        s->gb_buf.width = width;
+        s->gb_buf.format = desired_palette;
+
+        if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf)) < 0) {
+            s->gb_buf.format = VIDEO_PALETTE_YUV420P;
+            
+            ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
+            if (ret < 0 && errno != EAGAIN) {
+                /* try YUV422 */
+                s->gb_buf.format = VIDEO_PALETTE_YUV422;
+                
+                ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
+                if (ret < 0 && errno != EAGAIN) {
+                    /* try RGB24 */
+                    s->gb_buf.format = VIDEO_PALETTE_RGB24;
+                    ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
+                }
+            }
+        }
+        if (ret < 0) {
+            if (errno != EAGAIN) {
+            fail1:
+                fprintf(stderr, "Fatal: grab device does not support suitable format\n");
+            } else {
+                fprintf(stderr,"Fatal: grab device does not receive any video signal\n");
+            }
+            goto fail;
+        }
+        s->frame_format = s->gb_buf.format;
+        s->use_mmap = 1;
+    }
+
+    switch(s->frame_format) {
+    case VIDEO_PALETTE_YUV420P:
+        frame_size = (width * height * 3) / 2;
+        st->codec.pix_fmt = PIX_FMT_YUV420P;
+        break;
+    case VIDEO_PALETTE_YUV422:
+        frame_size = width * height * 2;
+        st->codec.pix_fmt = PIX_FMT_YUV422;
+        break;
+    case VIDEO_PALETTE_RGB24:
+        frame_size = width * height * 3;
+        st->codec.pix_fmt = PIX_FMT_BGR24; /* NOTE: v4l uses BGR24, not RGB24 ! */
+        break;
+    default:
+        goto fail;
+    }
+    s->fd = video_fd;
+    s->frame_size = frame_size;
+    
+    st->codec.codec_type = CODEC_TYPE_VIDEO;
+    st->codec.codec_id = CODEC_ID_RAWVIDEO;
+    st->codec.width = width;
+    st->codec.height = height;
+    st->codec.frame_rate = frame_rate;
+    
+    av_set_pts_info(s1, 48, 1, 1000000); /* 48 bits pts in us */
+
+    return 0;
+ fail:
+    if (video_fd >= 0)
+        close(video_fd);
+    av_free(st);
+    return -EIO;
+}
+
+static int v4l_mm_read_picture(VideoData *s, UINT8 *buf)
+{
+    UINT8 *ptr;
+
+    /* Setup to capture the next frame */
+    s->gb_buf.frame = (s->gb_frame + 1) % s->gb_buffers.frames;
+    if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
+        if (errno == EAGAIN)
+            fprintf(stderr,"Cannot Sync\n");
+        else
+            perror("VIDIOCMCAPTURE");
+        return -EIO;
+    }
+
+    while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
+           (errno == EAGAIN || errno == EINTR));
+
+    ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
+    memcpy(buf, ptr, s->frame_size);
+
+    /* This is now the grabbing frame */
+    s->gb_frame = s->gb_buf.frame;
+
+    return s->frame_size;
+}
+
+static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    VideoData *s = s1->priv_data;
+    INT64 curtime, delay;
+    struct timespec ts;
+    INT64 per_frame = (INT64_C(1000000) * FRAME_RATE_BASE) / s->frame_rate;
+
+    /* Calculate the time of the next frame */
+    s->time_frame += per_frame;
+
+    /* wait based on the frame rate */
+    for(;;) {
+        curtime = av_gettime();
+        delay = s->time_frame - curtime;
+        if (delay <= 0) {
+            if (delay < -per_frame) {
+                /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
+                s->time_frame += per_frame;
+            }
+            break;
+        }    
+        ts.tv_sec = delay / 1000000;
+        ts.tv_nsec = (delay % 1000000) * 1000;
+        nanosleep(&ts, NULL);
+    }
+
+    if (av_new_packet(pkt, s->frame_size) < 0)
+        return -EIO;
+
+    pkt->pts = curtime & ((1LL << 48) - 1);
+
+    /* read one frame */
+    if (s->aiw_enabled) {
+        return aiw_read_picture(s, pkt->data);
+    } else if (s->use_mmap) {
+        return v4l_mm_read_picture(s, pkt->data);
+    } else {
+        if (read(s->fd, pkt->data, pkt->size) != pkt->size)
+            return -EIO;
+        return s->frame_size;
+    }
+}
+
+static int grab_read_close(AVFormatContext *s1)
+{
+    VideoData *s = s1->priv_data;
+
+    if (s->aiw_enabled)
+        aiw_close(s);
+
+    if (s->use_mmap)
+        munmap(s->video_buf, s->gb_buffers.size);
+
+    /* mute audio. we must force it because the BTTV driver does not
+       return its state correctly */
+    s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
+    ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
+
+    close(s->fd);
+    return 0;
+}
+
+static AVInputFormat video_grab_device_format = {
+    "video_grab_device",
+    "video grab",
+    sizeof(VideoData),
+    NULL,
+    grab_read_header,
+    grab_read_packet,
+    grab_read_close,
+    .flags = AVFMT_NOFILE,
+};
+
+/* All in Wonder specific stuff */
+/* XXX: remove and merge in libavcodec/imgconvert.c */
+
+static int aiw_init(VideoData *s)
+{
+    int width, height;
+
+    width = s->width;
+    height = s->height;
+
+    if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
+        (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
+        (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
+        
+        s->deint=0;
+        s->halfw=0;
+        if (height == s->video_cap.maxheight*2) s->deint=1;
+        if (width == s->video_cap.maxwidth/2) s->halfw=1;
+    } else {
+        fprintf(stderr,"\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
+        fprintf(stderr," %dx%d  %dx%d %dx%d\n\n",
+                s->video_cap.maxwidth,s->video_cap.maxheight,
+                s->video_cap.maxwidth,s->video_cap.maxheight*2,
+                s->video_cap.maxwidth/2,s->video_cap.maxheight);
+        goto fail;
+    }
+
+    if (s->halfw == 0) {
+        s->src_mem = av_malloc(s->width*2);
+    } else {
+        s->src_mem = av_malloc(s->width*4);
+    }
+    if (!s->src_mem) goto fail;
+
+    s->lum_m4_mem = av_malloc(s->width);
+    if (!s->lum_m4_mem)
+        goto fail;
+    return 0;
+ fail:
+    av_freep(&s->src_mem);
+    av_freep(&s->lum_m4_mem);
+    return -1;
+}
+
+#ifdef HAVE_MMX
+#include "../libavcodec/i386/mmx.h"
+
+#define LINE_WITH_UV \
+                    movq_m2r(ptr[0],mm0); \
+                    movq_m2r(ptr[8],mm1);  \
+                    movq_r2r(mm0, mm4); \
+                    punpcklbw_r2r(mm1,mm0); \
+                    punpckhbw_r2r(mm1,mm4); \
+                    movq_r2r(mm0,mm5); \
+                    punpcklbw_r2r(mm4,mm0); \
+                    punpckhbw_r2r(mm4,mm5); \
+                    movq_r2r(mm0,mm1); \
+                    punpcklbw_r2r(mm5,mm1); \
+                    movq_r2m(mm1,lum[0]); \
+                    movq_m2r(ptr[16],mm2); \
+                    movq_m2r(ptr[24],mm1); \
+                    movq_r2r(mm2,mm4); \
+                    punpcklbw_r2r(mm1,mm2); \
+                    punpckhbw_r2r(mm1,mm4); \
+                    movq_r2r(mm2,mm3); \
+                    punpcklbw_r2r(mm4,mm2); \
+                    punpckhbw_r2r(mm4,mm3); \
+                    movq_r2r(mm2,mm1); \
+                    punpcklbw_r2r(mm3,mm1); \
+                    movq_r2m(mm1,lum[8]); \
+                    punpckhdq_r2r(mm2,mm0); \
+                    punpckhdq_r2r(mm3,mm5); \
+                    movq_r2m(mm0,cb[0]); \
+                    movq_r2m(mm5,cr[0]);
+
+#define LINE_NO_UV \
+                    movq_m2r(ptr[0],mm0);\
+                    movq_m2r(ptr[8],mm1);\
+                    movq_r2r(mm0, mm4);\
+                    punpcklbw_r2r(mm1,mm0); \
+                    punpckhbw_r2r(mm1,mm4);\
+                    movq_r2r(mm0,mm5);\
+                    punpcklbw_r2r(mm4,mm0);\
+                    punpckhbw_r2r(mm4,mm5);\
+                    movq_r2r(mm0,mm1);\
+                    punpcklbw_r2r(mm5,mm1);\
+                    movq_r2m(mm1,lum[0]);\
+                    movq_m2r(ptr[16],mm2);\
+                    movq_m2r(ptr[24],mm1);\
+                    movq_r2r(mm2,mm4);\
+                    punpcklbw_r2r(mm1,mm2);\
+                    punpckhbw_r2r(mm1,mm4);\
+                    movq_r2r(mm2,mm3);\
+                    punpcklbw_r2r(mm4,mm2);\
+                    punpckhbw_r2r(mm4,mm3);\
+                    movq_r2r(mm2,mm1);\
+                    punpcklbw_r2r(mm3,mm1);\
+                    movq_r2m(mm1,lum[8]);
+
+#define LINE_WITHUV_AVG \
+                    movq_m2r(ptr[0], mm0);\
+                    movq_m2r(ptr[8], mm1);\
+                    movq_r2r(mm0, mm4);\
+                    punpcklbw_r2r(mm1,mm0);\
+                    punpckhbw_r2r(mm1,mm4);\
+                    movq_r2r(mm0,mm5);\
+                    punpcklbw_r2r(mm4,mm0);\
+                    punpckhbw_r2r(mm4,mm5);\
+                    movq_r2r(mm0,mm1);\
+                    movq_r2r(mm5,mm2);\
+                    punpcklbw_r2r(mm7,mm1);\
+                    punpcklbw_r2r(mm7,mm2);\
+                    paddw_r2r(mm6,mm1);\
+                    paddw_r2r(mm2,mm1);\
+                    psraw_i2r(1,mm1);\
+                    packuswb_r2r(mm7,mm1);\
+                    movd_r2m(mm1,lum[0]);\
+                    movq_m2r(ptr[16],mm2);\
+                    movq_m2r(ptr[24],mm1);\
+                    movq_r2r(mm2,mm4);\
+                    punpcklbw_r2r(mm1,mm2);\
+                    punpckhbw_r2r(mm1,mm4);\
+                    movq_r2r(mm2,mm3);\
+                    punpcklbw_r2r(mm4,mm2);\
+                    punpckhbw_r2r(mm4,mm3);\
+                    movq_r2r(mm2,mm1);\
+                    movq_r2r(mm3,mm4);\
+                    punpcklbw_r2r(mm7,mm1);\
+                    punpcklbw_r2r(mm7,mm4);\
+                    paddw_r2r(mm6,mm1);\
+                    paddw_r2r(mm4,mm1);\
+                    psraw_i2r(1,mm1);\
+                    packuswb_r2r(mm7,mm1);\
+                    movd_r2m(mm1,lum[4]);\
+                    punpckhbw_r2r(mm7,mm0);\
+                    punpckhbw_r2r(mm7,mm2);\
+                    paddw_r2r(mm6,mm0);\
+                    paddw_r2r(mm2,mm0);\
+                    psraw_i2r(1,mm0);\
+                    packuswb_r2r(mm7,mm0);\
+                    punpckhbw_r2r(mm7,mm5);\
+                    punpckhbw_r2r(mm7,mm3);\
+                    paddw_r2r(mm6,mm5);\
+                    paddw_r2r(mm3,mm5);\
+                    psraw_i2r(1,mm5);\
+                    packuswb_r2r(mm7,mm5);\
+                    movd_r2m(mm0,cb[0]);\
+                    movd_r2m(mm5,cr[0]);
+
+#define LINE_NOUV_AVG \
+                    movq_m2r(ptr[0],mm0);\
+                    movq_m2r(ptr[8],mm1);\
+                    pand_r2r(mm5,mm0);\
+                    pand_r2r(mm5,mm1);\
+                    pmaddwd_r2r(mm6,mm0);\
+                    pmaddwd_r2r(mm6,mm1);\
+                    packssdw_r2r(mm1,mm0);\
+                    paddw_r2r(mm6,mm0);\
+                    psraw_i2r(1,mm0);\
+                    movq_m2r(ptr[16],mm2);\
+                    movq_m2r(ptr[24],mm3);\
+                    pand_r2r(mm5,mm2);\
+                    pand_r2r(mm5,mm3);\
+                    pmaddwd_r2r(mm6,mm2);\
+                    pmaddwd_r2r(mm6,mm3);\
+                    packssdw_r2r(mm3,mm2);\
+                    paddw_r2r(mm6,mm2);\
+                    psraw_i2r(1,mm2);\
+                    packuswb_r2r(mm2,mm0);\
+                    movq_r2m(mm0,lum[0]);
+
+#define DEINT_LINE_LUM(ptroff) \
+                    movd_m2r(lum_m4[(ptroff)],mm0);\
+                    movd_m2r(lum_m3[(ptroff)],mm1);\
+                    movd_m2r(lum_m2[(ptroff)],mm2);\
+                    movd_m2r(lum_m1[(ptroff)],mm3);\
+                    movd_m2r(lum[(ptroff)],mm4);\
+                    punpcklbw_r2r(mm7,mm0);\
+                    movd_r2m(mm2,lum_m4[(ptroff)]);\
+                    punpcklbw_r2r(mm7,mm1);\
+                    punpcklbw_r2r(mm7,mm2);\
+                    punpcklbw_r2r(mm7,mm3);\
+                    punpcklbw_r2r(mm7,mm4);\
+                    psllw_i2r(2,mm1);\
+                    psllw_i2r(1,mm2);\
+                    paddw_r2r(mm6,mm1);\
+                    psllw_i2r(2,mm3);\
+                    paddw_r2r(mm2,mm1);\
+                    paddw_r2r(mm4,mm0);\
+                    paddw_r2r(mm3,mm1);\
+                    psubusw_r2r(mm0,mm1);\
+                    psrlw_i2r(3,mm1);\
+                    packuswb_r2r(mm7,mm1);\
+                    movd_r2m(mm1,lum_m2[(ptroff)]);
+
+#else
+#include "../libavcodec/dsputil.h"
+
+#define LINE_WITH_UV \
+                    lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
+                    cb[0]=ptr[1];cb[1]=ptr[5];\
+                    cr[0]=ptr[3];cr[1]=ptr[7];\
+                    lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
+                    cb[2]=ptr[9];cb[3]=ptr[13];\
+                    cr[2]=ptr[11];cr[3]=ptr[15];\
+                    lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
+                    cb[4]=ptr[17];cb[5]=ptr[21];\
+                    cr[4]=ptr[19];cr[5]=ptr[23];\
+                    lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
+                    cb[6]=ptr[25];cb[7]=ptr[29];\
+                    cr[6]=ptr[27];cr[7]=ptr[31];
+
+#define LINE_NO_UV \
+                    lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
+                    lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
+                    lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
+                    lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
+
+#define LINE_WITHUV_AVG \
+                    sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
+                    sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
+                    sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
+                    sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
+                    sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
+                    sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
+                    sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
+                    sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
+                    sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
+                    sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
+                    sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
+                    sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
+                    sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
+                    sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
+                    sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
+                    sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum; 
+
+#define LINE_NOUV_AVG \
+                    sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
+                    sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
+                    sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
+                    sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
+                    sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
+                    sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
+                    sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
+                    sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; 
+
+#define DEINT_LINE_LUM(ptroff) \
+                    sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
+                    lum_m4[(ptroff)]=lum_m2[(ptroff)];\
+                    lum_m2[(ptroff)]=cm[(sum+4)>>3];\
+                    sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
+                    lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
+                    lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
+                    sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
+                    lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
+                    lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
+                    sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
+                    lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
+                    lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
+
+#endif
+
+
+/* Read two fields separately. */
+static int aiw_read_picture(VideoData *s, uint8_t *data)
+{
+    UINT8 *ptr, *lum, *cb, *cr;
+    int h;
+#ifndef HAVE_MMX
+    int sum;
+#endif
+    UINT8* src = s->src_mem;
+    UINT8 *ptrend = &src[s->width*2];
+    lum=data;
+    cb=&lum[s->width*s->height];
+    cr=&cb[(s->width*s->height)/4];
+    if (s->deint == 0 && s->halfw == 0) {
+        while (read(s->fd,src,s->width*2) < 0) {
+            usleep(100);
+        }
+        for (h = 0; h < s->height-2; h+=2) {
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+                LINE_WITH_UV
+                    }
+            read(s->fd,src,s->width*2);
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
+                LINE_NO_UV
+                    }
+            read(s->fd,src,s->width*2);
+        }
+        /*
+         * Do last two lines
+         */
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+            LINE_WITH_UV
+                }
+        read(s->fd,src,s->width*2);
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
+            LINE_NO_UV
+                }
+        /* drop second field */
+        while (read(s->fd,src,s->width*2) < 0) {
+            usleep(100);
+        }
+        for (h = 0; h < s->height - 1; h++) {
+            read(s->fd,src,s->width*2);
+        }
+    } else if (s->halfw == 1) {
+#ifdef HAVE_MMX
+        mmx_t rounder;
+        mmx_t masker;
+        rounder.uw[0]=1;
+        rounder.uw[1]=1;
+        rounder.uw[2]=1;
+        rounder.uw[3]=1;
+        masker.ub[0]=0xff;
+        masker.ub[1]=0;
+        masker.ub[2]=0xff;
+        masker.ub[3]=0;
+        masker.ub[4]=0xff;
+        masker.ub[5]=0;
+        masker.ub[6]=0xff;
+        masker.ub[7]=0;
+        pxor_r2r(mm7,mm7);
+        movq_m2r(rounder,mm6);
+#endif
+        while (read(s->fd,src,s->width*4) < 0) {
+            usleep(100);
+        }
+        ptrend = &src[s->width*4];
+        for (h = 0; h < s->height-2; h+=2) {
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
+                LINE_WITHUV_AVG
+                    }
+            read(s->fd,src,s->width*4);
+#ifdef HAVE_MMX
+            movq_m2r(masker,mm5);
+#endif
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
+                LINE_NOUV_AVG
+                    }
+            read(s->fd,src,s->width*4);
+        }
+        /*
+ * Do last two lines
+ */
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
+            LINE_WITHUV_AVG
+                }
+        read(s->fd,src,s->width*4);
+#ifdef HAVE_MMX
+        movq_m2r(masker,mm5);
+#endif
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
+            LINE_NOUV_AVG
+                }
+        /* drop second field */
+        while (read(s->fd,src,s->width*4) < 0) {
+            usleep(100);
+        }
+        for (h = 0; h < s->height - 1; h++) {
+            read(s->fd,src,s->width*4);
+        }
+    } else {
+        UINT8 *lum_m1, *lum_m2, *lum_m3, *lum_m4;
+#ifdef HAVE_MMX
+        mmx_t rounder;
+        rounder.uw[0]=4;
+        rounder.uw[1]=4;
+        rounder.uw[2]=4;
+        rounder.uw[3]=4;
+        movq_m2r(rounder,mm6);
+        pxor_r2r(mm7,mm7);
+#else
+        UINT8 *cm = cropTbl + MAX_NEG_CROP;
+#endif
+
+        /* read two fields and deinterlace them */
+        while (read(s->fd,src,s->width*2) < 0) {
+            usleep(100);
+        }
+        for (h = 0; h < (s->height/2)-2; h+=2) {
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+                LINE_WITH_UV
+                    }
+            read(s->fd,src,s->width*2);
+            /* skip a luminance line - will be filled in later */
+            lum += s->width;
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+                LINE_WITH_UV
+                    }
+            /* skip a luminance line - will be filled in later */
+            lum += s->width;
+            read(s->fd,src,s->width*2);
+        }
+        /*
+ * Do last two lines
+ */
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+            LINE_WITH_UV
+                }
+        /* skip a luminance line - will be filled in later */
+        lum += s->width;
+        read(s->fd,src,s->width*2);
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+            LINE_WITH_UV
+                }
+        /*
+ *
+ * SECOND FIELD
+ *
+ */
+        lum=&data[s->width];
+        while (read(s->fd,src,s->width*2) < 0) {
+            usleep(10);
+        }
+        /* First (and last) two lines not interlaced */
+        for (h = 0; h < 2; h++) {
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
+                LINE_NO_UV
+                    }
+            read(s->fd,src,s->width*2);
+            /* skip a luminance line */
+            lum += s->width;
+        }
+        lum_m1=&lum[-s->width];
+        lum_m2=&lum_m1[-s->width];
+        lum_m3=&lum_m2[-s->width];
+        memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
+        for (; h < (s->height/2)-1; h++) {
+            lum_m4=s->lum_m4_mem;
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
+                LINE_NO_UV
+
+                    DEINT_LINE_LUM(0)
+                    DEINT_LINE_LUM(4)
+                    DEINT_LINE_LUM(8)
+                    DEINT_LINE_LUM(12)
+                    }
+            read(s->fd,src,s->width*2);
+            /* skip a luminance line */
+            lum += s->width;
+            lum_m1 += s->width;
+            lum_m2 += s->width;
+            lum_m3 += s->width;
+            //                lum_m4 += s->width;
+        }
+        /*
+ * Do last line
+ */
+        lum_m4=s->lum_m4_mem;
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
+            LINE_NO_UV
+
+                DEINT_LINE_LUM(0)
+                DEINT_LINE_LUM(4)
+                DEINT_LINE_LUM(8)
+                DEINT_LINE_LUM(12)
+                }
+    }
+#ifdef HAVE_MMX
+    emms();
+#endif
+    return s->frame_size;
+}
+
+static int aiw_close(VideoData *s)
+{
+    av_freep(&s->lum_m4_mem);
+    av_freep(&s->src_mem);
+    return 0;
+}
+
+int video_grab_init(void)
+{
+    av_register_input_format(&video_grab_device_format);
+    return 0;
+}

libavformat/http.c

@@ -0,0 +1,290 @@
+/*
+ * HTTP protocol for ffmpeg client
+ * Copyright (c) 2000, 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include <unistd.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifndef __BEOS__
+# include <arpa/inet.h>
+#else
+# include "barpainet.h"
+#endif
+#include <netdb.h>
+
+
+/* XXX: POST protocol is not completly implemented because ffmpeg use
+   only a subset of it */
+
+//#define DEBUG
+
+/* used for protocol handling */
+#define BUFFER_SIZE 1024
+#define URL_SIZE    4096
+
+typedef struct {
+    URLContext *hd;
+    unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
+    int line_count;
+    int http_code;
+    char location[URL_SIZE];
+} HTTPContext;
+
+static int http_connect(URLContext *h, const char *path, const char *hoststr);
+static int http_write(URLContext *h, UINT8 *buf, int size);
+
+
+/* return non zero if error */
+static int http_open(URLContext *h, const char *uri, int flags)
+{
+    const char *path, *proxy_path;
+    char hostname[1024], hoststr[1024];
+    char path1[1024];
+    char buf[1024];
+    int port, use_proxy, err;
+    HTTPContext *s;
+    URLContext *hd = NULL;
+
+    h->is_streamed = 1;
+
+    s = av_malloc(sizeof(HTTPContext));
+    if (!s) {
+        return -ENOMEM;
+    }
+    h->priv_data = s;
+
+    proxy_path = getenv("http_proxy");
+    use_proxy = (proxy_path != NULL) && !getenv("no_proxy") && 
+        strstart(proxy_path, "http://", NULL);
+
+    /* fill the dest addr */
+ redo:
+    /* needed in any case to build the host string */
+    url_split(NULL, 0, hostname, sizeof(hostname), &port, 
+              path1, sizeof(path1), uri);
+    if (port > 0) {
+        snprintf(hoststr, sizeof(hoststr), "%s:%d", hostname, port);
+    } else {
+        pstrcpy(hoststr, sizeof(hoststr), hostname);
+    }
+
+    if (use_proxy) {
+        url_split(NULL, 0, hostname, sizeof(hostname), &port, 
+                  NULL, 0, proxy_path);
+        path = uri;
+    } else {
+        if (path1[0] == '\0')
+            path = "/";
+        else
+            path = path1;
+    }
+    if (port < 0)
+        port = 80;
+
+    snprintf(buf, sizeof(buf), "tcp://%s:%d", hostname, port);
+    err = url_open(&hd, buf, URL_RDWR);
+    if (err < 0)
+        goto fail;
+
+    s->hd = hd;
+    if (http_connect(h, path, hoststr) < 0)
+        goto fail;
+    if (s->http_code == 303 && s->location[0] != '\0') {
+        /* url moved, get next */
+        uri = s->location;
+        url_close(hd);
+        goto redo;
+    }
+    return 0;
+ fail:
+    if (hd)
+        url_close(hd);
+    av_free(s);
+    return -EIO;
+}
+
+static int http_getc(HTTPContext *s)
+{
+    int len;
+    if (s->buf_ptr >= s->buf_end) {
+        len = url_read(s->hd, s->buffer, BUFFER_SIZE);
+        if (len < 0) {
+            return -EIO;
+        } else if (len == 0) {
+            return -1;
+        } else {
+            s->buf_ptr = s->buffer;
+            s->buf_end = s->buffer + len;
+        }
+    }
+    return *s->buf_ptr++;
+}
+
+static int process_line(HTTPContext *s, char *line, int line_count)
+{
+    char *tag, *p;
+    
+    /* end of header */
+    if (line[0] == '\0')
+        return 0;
+
+    p = line;
+    if (line_count == 0) {
+        while (!isspace(*p) && *p != '\0')
+            p++;
+        while (isspace(*p))
+            p++;
+        s->http_code = strtol(p, NULL, 10);
+#ifdef DEBUG
+        printf("http_code=%d\n", s->http_code);
+#endif
+    } else {
+        while (*p != '\0' && *p != ':')
+            p++;
+        if (*p != ':') 
+            return 1;
+        
+        *p = '\0';
+        tag = line;
+        p++;
+        while (isspace(*p))
+            p++;
+        if (!strcmp(tag, "Location")) {
+            strcpy(s->location, p);
+        }
+    }
+    return 1;
+}
+
+static int http_connect(URLContext *h, const char *path, const char *hoststr)
+{
+    HTTPContext *s = h->priv_data;
+    int post, err, ch;
+    char line[1024], *q;
+
+
+    /* send http header */
+    post = h->flags & URL_WRONLY;
+
+    snprintf(s->buffer, sizeof(s->buffer),
+             "%s %s HTTP/1.0\n"
+             "User-Agent: FFmpeg %s\n"
+             "Accept: */*\n"
+             "Host: %s\n"
+             "\n",
+             post ? "POST" : "GET",
+             path,
+             FFMPEG_VERSION,
+             hoststr);
+    
+    if (http_write(h, s->buffer, strlen(s->buffer)) < 0)
+        return -EIO;
+        
+    /* init input buffer */
+    s->buf_ptr = s->buffer;
+    s->buf_end = s->buffer;
+    s->line_count = 0;
+    s->location[0] = '\0';
+    if (post) {
+        sleep(1);
+        return 0;
+    }
+    
+    /* wait for header */
+    q = line;
+    for(;;) {
+        ch = http_getc(s);
+        if (ch < 0)
+            return -EIO;
+        if (ch == '\n') {
+            /* process line */
+            if (q > line && q[-1] == '\r')
+                q--;
+            *q = '\0';
+#ifdef DEBUG
+            printf("header='%s'\n", line);
+#endif
+            err = process_line(s, line, s->line_count);
+            if (err < 0)
+                return err;
+            if (err == 0)
+                return 0;
+            s->line_count++;
+            q = line;
+        } else {
+            if ((q - line) < sizeof(line) - 1)
+                *q++ = ch;
+        }
+    }
+}
+
+
+static int http_read(URLContext *h, UINT8 *buf, int size)
+{
+    HTTPContext *s = h->priv_data;
+    int size1, len;
+
+    size1 = size;
+    while (size > 0) {
+        /* read bytes from input buffer first */
+        len = s->buf_end - s->buf_ptr;
+        if (len > 0) {
+            if (len > size)
+                len = size;
+            memcpy(buf, s->buf_ptr, len);
+            s->buf_ptr += len;
+        } else {
+            len = url_read (s->hd, buf, size);
+            if (len < 0) {
+                return len;
+            } else if (len == 0) {
+                break;
+            }
+        }
+        size -= len;
+        buf += len;
+    }
+    return size1 - size;
+}
+
+/* used only when posting data */
+static int http_write(URLContext *h, UINT8 *buf, int size)
+{
+    HTTPContext *s = h->priv_data;
+    return url_write(s->hd, buf, size);
+}
+
+static int http_close(URLContext *h)
+{
+    HTTPContext *s = h->priv_data;
+    url_close(s->hd);
+    av_free(s);
+    return 0;
+}
+
+URLProtocol http_protocol = {
+    "http",
+    http_open,
+    http_read,
+    http_write,
+    NULL, /* seek */
+    http_close,
+};
+

libavformat/img.c

@@ -0,0 +1,945 @@
+/*
+ * Image format
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+extern AVInputFormat pgm_iformat;
+extern AVOutputFormat pgm_oformat;
+extern AVInputFormat pgmyuv_iformat;
+extern AVOutputFormat pgmyuv_oformat;
+extern AVInputFormat ppm_iformat;
+extern AVOutputFormat ppm_oformat;
+extern AVInputFormat imgyuv_iformat;
+extern AVOutputFormat imgyuv_oformat;
+extern AVInputFormat pgmpipe_iformat;
+extern AVOutputFormat pgmpipe_oformat;
+extern AVInputFormat pgmyuvpipe_iformat;
+extern AVOutputFormat pgmyuvpipe_oformat;
+extern AVInputFormat ppmpipe_iformat;
+extern AVOutputFormat ppmpipe_oformat;
+extern AVOutputFormat yuv4mpegpipe_oformat;
+
+#define IMGFMT_YUV     1
+#define IMGFMT_PGMYUV  2
+#define IMGFMT_PGM     3
+#define IMGFMT_PPM     4
+#define IMGFMT_YUV4MPEG     5
+
+#define Y4M_MAGIC "YUV4MPEG2"
+#define Y4M_FRAME_MAGIC "FRAME"
+#define Y4M_LINE_MAX 256
+
+typedef struct {
+    int width;
+    int height;
+    int img_number;
+    int img_size;
+    int img_fmt;
+    int is_pipe;
+    int header_written;
+    char path[1024];
+} VideoData;
+
+static inline int pnm_space(int c)  
+{
+    return (c==' ' || c=='\n' || c=='\r' || c=='\t');
+}
+
+static void pnm_get(ByteIOContext *f, char *str, int buf_size) 
+{
+    char *s;
+    int c;
+    
+    do  {
+        c=get_byte(f);
+        if (c=='#')  {
+            do  {
+                c=get_byte(f);
+            } while (c!='\n');
+            c=get_byte(f);
+        }
+    } while (pnm_space(c));
+    
+    s=str;
+    do  {
+        if (url_feof(f))
+            break;
+        if ((s - str)  < buf_size - 1)
+            *s++=c;
+        c=get_byte(f);
+    } while (!pnm_space(c));
+    *s = '\0';
+}
+
+static int pgm_read(VideoData *s, ByteIOContext *f, UINT8 *buf, int size, int is_yuv)
+{
+    int width, height, i;
+    char buf1[32];
+    UINT8 *picture[3];
+
+    width = s->width;
+    height = s->height;
+
+    pnm_get(f, buf1, sizeof(buf1));
+    if (strcmp(buf1, "P5")) {
+        return -EIO;
+    }
+    pnm_get(f, buf1, sizeof(buf1));
+    pnm_get(f, buf1, sizeof(buf1));
+    pnm_get(f, buf1, sizeof(buf1));
+    
+    picture[0] = buf;
+    picture[1] = buf + width * height;
+    picture[2] = buf + width * height + (width * height / 4);
+    get_buffer(f, picture[0], width * height);
+    
+    height>>=1;
+    width>>=1;
+    if (is_yuv) {
+        for(i=0;i<height;i++) {
+            get_buffer(f, picture[1] + i * width, width);
+            get_buffer(f, picture[2] + i * width, width);
+        }
+    } else {
+        for(i=0;i<height;i++) {
+            memset(picture[1] + i * width, 128, width);
+            memset(picture[2] + i * width, 128, width);
+        }
+    }
+    return 0;
+}
+
+static int ppm_read(VideoData *s, ByteIOContext *f, UINT8 *buf, int size)
+{
+    int width, height;
+    char buf1[32];
+    UINT8 *picture[3];
+
+    width = s->width;
+    height = s->height;
+
+    pnm_get(f, buf1, sizeof(buf1));
+    if (strcmp(buf1, "P6")) {
+        return -EIO;
+    }
+    
+    pnm_get(f, buf1, sizeof(buf1));
+    pnm_get(f, buf1, sizeof(buf1));
+    pnm_get(f, buf1, sizeof(buf1));
+    
+    picture[0] = buf;
+    get_buffer(f, picture[0], width * height*3);
+    
+    return 0;
+
+}
+
+static int yuv_read(VideoData *s, const char *filename, UINT8 *buf, int size1)
+{
+    ByteIOContext pb1, *pb = &pb1;
+    char fname[1024], *p;
+    int size;
+
+    size = s->width * s->height;
+    
+    strcpy(fname, filename);
+    p = strrchr(fname, '.');
+    if (!p || p[1] != 'Y')
+        return -EIO;
+
+    if (url_fopen(pb, fname, URL_RDONLY) < 0)
+        return -EIO;
+    
+    get_buffer(pb, buf, size);
+    url_fclose(pb);
+    
+    p[1] = 'U';
+    if (url_fopen(pb, fname, URL_RDONLY) < 0)
+        return -EIO;
+
+    get_buffer(pb, buf + size, size / 4);
+    url_fclose(pb);
+    
+    p[1] = 'V';
+    if (url_fopen(pb, fname, URL_RDONLY) < 0)
+        return -EIO;
+
+    get_buffer(pb, buf + size + (size / 4), size / 4);
+    url_fclose(pb);
+    return 0;
+}
+
+static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    VideoData *s = s1->priv_data;
+    char filename[1024];
+    int ret;
+    ByteIOContext f1, *f;
+
+/*
+    This if-statement destroys pipes - I do not see why it is necessary
+    if (get_frame_filename(filename, sizeof(filename),
+                           s->path, s->img_number) < 0)
+        return -EIO;
+*/
+    get_frame_filename(filename, sizeof(filename),
+                       s->path, s->img_number);
+    if (!s->is_pipe) {
+        f = &f1;
+        if (url_fopen(f, filename, URL_RDONLY) < 0)
+            return -EIO;
+    } else {
+        f = &s1->pb;
+        if (url_feof(f))
+            return -EIO;
+    }
+
+    av_new_packet(pkt, s->img_size);
+    pkt->stream_index = 0;
+
+    switch(s->img_fmt) {
+    case IMGFMT_PGMYUV:
+        ret = pgm_read(s, f, pkt->data, pkt->size, 1);
+        break;
+    case IMGFMT_PGM:
+        ret = pgm_read(s, f, pkt->data, pkt->size, 0);
+        break;
+    case IMGFMT_YUV:
+        ret = yuv_read(s, filename, pkt->data, pkt->size);
+        break;
+    case IMGFMT_PPM:
+        ret = ppm_read(s, f, pkt->data, pkt->size);
+        break;
+    default:
+        return -EIO;
+    }
+    
+    if (!s->is_pipe) {
+        url_fclose(f);
+    }
+
+    if (ret < 0) {
+        av_free_packet(pkt);
+        return -EIO; /* signal EOF */
+    } else {
+        pkt->pts = ((INT64)s->img_number * s1->pts_den * FRAME_RATE_BASE) / (s1->streams[0]->codec.frame_rate * s1->pts_num);
+        s->img_number++;
+        return 0;
+    }
+}
+
+static int sizes[][2] = {
+    { 640, 480 },
+    { 720, 480 },
+    { 720, 576 },
+    { 352, 288 },
+    { 352, 240 },
+    { 160, 128 },
+    { 512, 384 },
+    { 640, 352 },
+    { 640, 240 },
+};
+
+static int infer_size(int *width_ptr, int *height_ptr, int size)
+{
+    int i;
+
+    for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
+        if ((sizes[i][0] * sizes[i][1]) == size) {
+            *width_ptr = sizes[i][0];
+            *height_ptr = sizes[i][1];
+            return 0;
+        }
+    }
+    return -1;
+}
+
+static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
+{
+    VideoData *s = s1->priv_data;
+    int i, h;
+    char buf[1024];
+    char buf1[32];
+    ByteIOContext pb1, *f = &pb1;
+    AVStream *st;
+
+    st = av_new_stream(s1, 0);
+    if (!st) {
+        av_free(s);
+        return -ENOMEM;
+    }
+
+    strcpy(s->path, s1->filename);
+    s->img_number = 0;
+
+    /* find format */
+    if (s1->iformat->flags & AVFMT_NOFILE)
+        s->is_pipe = 0;
+    else
+        s->is_pipe = 1;
+        
+    if (s1->iformat == &pgmyuvpipe_iformat ||
+        s1->iformat == &pgmyuv_iformat)
+        s->img_fmt = IMGFMT_PGMYUV;
+    else if (s1->iformat == &pgmpipe_iformat ||
+             s1->iformat == &pgm_iformat)
+        s->img_fmt = IMGFMT_PGM;
+    else if (s1->iformat == &imgyuv_iformat)
+        s->img_fmt = IMGFMT_YUV;
+    else if (s1->iformat == &ppmpipe_iformat ||
+             s1->iformat == &ppm_iformat)
+        s->img_fmt = IMGFMT_PPM;
+    else
+        goto fail;
+
+    if (!s->is_pipe) {
+        /* try to find the first image */
+        for(i=0;i<5;i++) {
+            if (get_frame_filename(buf, sizeof(buf), s->path, s->img_number) < 0)
+                goto fail;
+            if (url_fopen(f, buf, URL_RDONLY) >= 0)
+                break;
+            s->img_number++;
+        }
+        if (i == 5)
+            goto fail;
+    } else {
+        f = &s1->pb;
+    }
+    
+    /* find the image size */
+    /* XXX: use generic file format guessing, as mpeg */
+    switch(s->img_fmt) {
+    case IMGFMT_PGM:
+    case IMGFMT_PGMYUV:
+    case IMGFMT_PPM:
+        pnm_get(f, buf1, sizeof(buf1));
+        pnm_get(f, buf1, sizeof(buf1));
+        s->width = atoi(buf1);
+        pnm_get(f, buf1, sizeof(buf1));
+        h = atoi(buf1);
+        if (s->img_fmt == IMGFMT_PGMYUV)
+            h = (h * 2) / 3;
+        s->height = h;
+        if (s->width <= 0 ||
+            s->height <= 0 ||
+            (s->width % 2) != 0 ||
+            (s->height % 2) != 0) {
+            goto fail1;
+        }
+        break;
+    case IMGFMT_YUV:
+        /* infer size by using the file size. */
+        {
+            int img_size;
+            URLContext *h;
+
+            /* XXX: hack hack */
+            h = url_fileno(f);
+            img_size = url_seek(h, 0, SEEK_END);
+            if (infer_size(&s->width, &s->height, img_size) < 0) {
+                goto fail1;
+            }
+        }
+        break;
+    }
+    
+
+    if (!s->is_pipe) {
+        url_fclose(f);
+    } else {
+        url_fseek(f, 0, SEEK_SET);
+    }
+    
+
+    st->codec.codec_type = CODEC_TYPE_VIDEO;
+    st->codec.codec_id = CODEC_ID_RAWVIDEO;
+    st->codec.width = s->width;
+    st->codec.height = s->height;
+    if (s->img_fmt == IMGFMT_PPM) {
+        st->codec.pix_fmt = PIX_FMT_RGB24;
+        s->img_size = (s->width * s->height * 3);
+    } else {
+        st->codec.pix_fmt = PIX_FMT_YUV420P;
+        s->img_size = (s->width * s->height * 3) / 2;
+    }
+    if (!ap || !ap->frame_rate)
+        st->codec.frame_rate = 25 * FRAME_RATE_BASE;
+    else
+        st->codec.frame_rate = ap->frame_rate;
+    
+    return 0;
+ fail1:
+    if (!s->is_pipe)
+        url_fclose(f);
+ fail:
+    av_free(s);
+    return -EIO;
+}
+
+static int img_read_close(AVFormatContext *s1)
+{
+    return 0;
+}
+
+/******************************************************/
+/* image output */
+
+static int pgm_save(AVPicture *picture, int width, int height, ByteIOContext *pb, int is_yuv) 
+{
+    int i, h;
+    char buf[100];
+    UINT8 *ptr, *ptr1, *ptr2;
+
+    h = height;
+    if (is_yuv)
+        h = (height * 3) / 2;
+    snprintf(buf, sizeof(buf), 
+             "P5\n%d %d\n%d\n",
+             width, h, 255);
+    put_buffer(pb, buf, strlen(buf));
+    
+    ptr = picture->data[0];
+    for(i=0;i<height;i++) {
+        put_buffer(pb, ptr, width);
+        ptr += picture->linesize[0];
+    }
+
+    if (is_yuv) {
+        height >>= 1;
+        width >>= 1;
+        ptr1 = picture->data[1];
+        ptr2 = picture->data[2];
+        for(i=0;i<height;i++) {
+            put_buffer(pb, ptr1, width);
+            put_buffer(pb, ptr2, width);
+            ptr1 += picture->linesize[1];
+            ptr2 += picture->linesize[2];
+        }
+    }
+    put_flush_packet(pb);
+    return 0;
+}
+
+static int ppm_save(AVPicture *picture, int width, int height, ByteIOContext *pb) 
+{
+    int i;
+    char buf[100];
+    UINT8 *ptr;
+
+    snprintf(buf, sizeof(buf), 
+             "P6\n%d %d\n%d\n",
+             width, height, 255);
+    put_buffer(pb, buf, strlen(buf));
+    
+    ptr = picture->data[0];
+    for(i=0;i<height;i++) {
+        put_buffer(pb, ptr, width * 3);
+        ptr += picture->linesize[0];
+    }
+
+    put_flush_packet(pb);
+    return 0;
+}
+
+static int yuv_save(AVPicture *picture, int width, int height, const char *filename)
+{
+    ByteIOContext pb1, *pb = &pb1;
+    char fname[1024], *p;
+    int i, j;
+    UINT8 *ptr;
+    static char *ext = "YUV";
+
+    strcpy(fname, filename);
+    p = strrchr(fname, '.');
+    if (!p || p[1] != 'Y')
+        return -EIO;
+
+    for(i=0;i<3;i++) {
+        if (i == 1) {
+            width >>= 1;
+            height >>= 1;
+        }
+
+        p[1] = ext[i];
+        if (url_fopen(pb, fname, URL_WRONLY) < 0)
+            return -EIO;
+    
+        ptr = picture->data[i];
+        for(j=0;j<height;j++) {
+            put_buffer(pb, ptr, width);
+            ptr += picture->linesize[i];
+        }
+        put_flush_packet(pb);
+        url_fclose(pb);
+    }
+    return 0;
+}
+
+static int yuv4mpeg_save(AVPicture *picture, int width, int height, ByteIOContext *pb, int need_stream_header, 
+                        int is_yuv, int raten, int rated, int aspectn, int aspectd) 
+{
+    int i, n, m;
+    char buf[Y4M_LINE_MAX+1], buf1[20];
+    UINT8 *ptr, *ptr1, *ptr2;
+    
+    /* construct stream header, if this is the first frame */
+    if(need_stream_header) {
+        n = snprintf(buf, sizeof(buf), "%s W%d H%d F%d:%d I%s A%d:%d\n",
+                Y4M_MAGIC,
+                width,
+                height,
+                raten, rated,
+                "p",			/* ffmpeg seems to only output progressive video */
+                aspectn, aspectd);
+        if (n < 0) {
+            fprintf(stderr, "Error. YUV4MPEG stream header write failed.\n");
+        } else {
+            fprintf(stderr, "YUV4MPEG stream header written. FPS is %d\n", raten);
+            put_buffer(pb, buf, strlen(buf));
+        }
+    }
+    
+    /* construct frame header */
+    m = snprintf(buf1, sizeof(buf1), "%s \n", Y4M_FRAME_MAGIC);
+    if (m < 0) {
+        fprintf(stderr, "Error. YUV4MPEG frame header write failed.\n");
+    } else {
+        /* fprintf(stderr, "YUV4MPEG frame header written.\n"); */
+        put_buffer(pb, buf1, strlen(buf1));
+    }
+    
+    ptr = picture->data[0];
+    for(i=0;i<height;i++) {
+        put_buffer(pb, ptr, width);
+        ptr += picture->linesize[0];
+    }
+
+    if (is_yuv) {
+        height >>= 1;
+        width >>= 1;
+        ptr1 = picture->data[1];
+        ptr2 = picture->data[2];
+        for(i=0;i<height;i++) {		/* Cb */
+            put_buffer(pb, ptr1, width);
+            ptr1 += picture->linesize[1];
+        }
+         for(i=0;i<height;i++) {	/* Cr */
+            put_buffer(pb, ptr2, width);
+            ptr2 += picture->linesize[2];
+         }
+    }
+    put_flush_packet(pb);
+    return 0;
+}
+
+static int img_write_header(AVFormatContext *s)
+{
+    VideoData *img = s->priv_data;
+
+    img->img_number = 1;
+    strcpy(img->path, s->filename);
+
+    /* find format */
+    if (s->oformat->flags & AVFMT_NOFILE)
+        img->is_pipe = 0;
+    else
+        img->is_pipe = 1;
+        
+    if (s->oformat == &pgmyuvpipe_oformat ||
+        s->oformat == &pgmyuv_oformat) {
+        img->img_fmt = IMGFMT_PGMYUV;
+    } else if (s->oformat == &pgmpipe_oformat ||
+               s->oformat == &pgm_oformat) {
+        img->img_fmt = IMGFMT_PGM;
+    } else if (s->oformat == &imgyuv_oformat) {
+        img->img_fmt = IMGFMT_YUV;
+    } else if (s->oformat == &ppmpipe_oformat ||
+               s->oformat == &ppm_oformat) {
+        img->img_fmt = IMGFMT_PPM;
+    } else if (s->oformat == &yuv4mpegpipe_oformat) {
+        img->img_fmt = IMGFMT_YUV4MPEG;
+        img->header_written = 0;    
+    } else {
+        goto fail;
+    }
+    return 0;
+ fail:
+    av_free(img);
+    return -EIO;
+}
+
+static int img_write_packet(AVFormatContext *s, int stream_index,
+                            UINT8 *buf, int size, int force_pts)
+{
+    VideoData *img = s->priv_data;
+    AVStream *st = s->streams[stream_index];
+    ByteIOContext pb1, *pb;
+    AVPicture picture;
+    int width, height, need_stream_header, ret, size1, raten, rated, aspectn, aspectd, fps, fps1;
+    char filename[1024];
+
+    width = st->codec.width;
+    height = st->codec.height;
+    
+    if (img->img_number == 1) {
+        need_stream_header = 1;
+    } else {
+        need_stream_header = 0;
+    }
+    
+    fps = st->codec.frame_rate;
+    fps1 = (((float)fps / FRAME_RATE_BASE) * 1000);
+   
+   /* Sorry about this messy code, but mpeg2enc is very picky about
+    * the framerates it accepts. */
+    switch(fps1) {
+    case 23976:
+        raten = 24000; /* turn the framerate into a ratio */
+        rated = 1001;
+        break;
+    case 29970:
+        raten = 30000;
+        rated = 1001;
+        break;
+    case 25000:
+        raten = 25;
+        rated = 1;
+        break;
+    case 30000:
+        raten = 30;
+        rated = 1;
+        break;
+    case 24000:
+        raten = 24;
+        rated = 1;
+        break;
+    case 50000:
+        raten = 50;
+        rated = 1;
+        break;
+    case 59940:
+        raten = 60000;
+        rated = 1001;
+        break;
+    case 60000:
+        raten = 60;
+        rated = 1;
+        break;
+    default:
+        raten = fps1; /* this setting should work, but often doesn't */
+        rated = 1000;
+        break;
+    }
+    
+    aspectn = 1;
+    aspectd = 1;	/* ffmpeg always uses a 1:1 aspect ratio */
+
+    switch(st->codec.pix_fmt) {
+    case PIX_FMT_YUV420P:
+        size1 = (width * height * 3) / 2;
+        if (size != size1)
+            return -EIO;
+        
+        picture.data[0] = buf;
+        picture.data[1] = picture.data[0] + width * height;
+        picture.data[2] = picture.data[1] + (width * height) / 4;
+        picture.linesize[0] = width;
+        picture.linesize[1] = width >> 1; 
+        picture.linesize[2] = width >> 1;
+        break;
+    case PIX_FMT_RGB24:
+        size1 = (width * height * 3);
+        if (size != size1)
+            return -EIO;
+        picture.data[0] = buf;
+        picture.linesize[0] = width * 3;
+        break;
+    default:
+        return -EIO;
+    }
+    
+/*
+    This if-statement destroys pipes - I do not see why it is necessary
+    if (get_frame_filename(filename, sizeof(filename), 
+                           img->path, img->img_number) < 0)
+        return -EIO;
+*/
+    get_frame_filename(filename, sizeof(filename), 
+                       img->path, img->img_number);
+    if (!img->is_pipe) {
+        pb = &pb1;
+        if (url_fopen(pb, filename, URL_WRONLY) < 0)
+            return -EIO;
+    } else {
+        pb = &s->pb;
+    }
+    switch(img->img_fmt) {
+    case IMGFMT_PGMYUV:
+        ret = pgm_save(&picture, width, height, pb, 1);
+        break;
+    case IMGFMT_PGM:
+        ret = pgm_save(&picture, width, height, pb, 0);
+        break;
+    case IMGFMT_YUV:
+        ret = yuv_save(&picture, width, height, filename);
+        break;
+    case IMGFMT_PPM:
+        ret = ppm_save(&picture, width, height, pb);
+        break;
+    case IMGFMT_YUV4MPEG:
+         ret = yuv4mpeg_save(&picture, width, height, pb,
+         need_stream_header, 1, raten, rated, aspectn, aspectd);
+        break;
+    }
+    if (!img->is_pipe) {
+        url_fclose(pb);
+    }
+
+    img->img_number++;
+    return 0;
+}
+
+static int img_write_trailer(AVFormatContext *s)
+{
+    return 0;
+}
+
+static AVInputFormat pgm_iformat = {
+    "pgm",
+    "pgm image format",
+    sizeof(VideoData),
+    NULL,
+    img_read_header,
+    img_read_packet,
+    img_read_close,
+    NULL,
+    AVFMT_NOFILE | AVFMT_NEEDNUMBER,
+    .extensions = "pgm",
+};
+
+static AVOutputFormat pgm_oformat = {
+    "pgm",
+    "pgm image format",
+    "",
+    "pgm",
+    sizeof(VideoData),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    img_write_header,
+    img_write_packet,
+    img_write_trailer,
+    AVFMT_NOFILE | AVFMT_NEEDNUMBER,
+};
+
+static AVInputFormat pgmyuv_iformat = {
+    "pgmyuv",
+    "pgm with YUV content image format",
+    sizeof(VideoData),
+    NULL, /* no probe */
+    img_read_header,
+    img_read_packet,
+    img_read_close,
+    NULL,
+    AVFMT_NOFILE | AVFMT_NEEDNUMBER,
+};
+
+static AVOutputFormat pgmyuv_oformat = {
+    "pgmyuv",
+    "pgm with YUV content image format",
+    "",
+    "pgm",
+    sizeof(VideoData),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    img_write_header,
+    img_write_packet,
+    img_write_trailer,
+    AVFMT_NOFILE | AVFMT_NEEDNUMBER,
+};
+
+static AVInputFormat ppm_iformat = {
+    "ppm",
+    "ppm image format",
+    sizeof(VideoData),
+    NULL,
+    img_read_header,
+    img_read_packet,
+    img_read_close,
+    NULL,
+    AVFMT_NOFILE | AVFMT_NEEDNUMBER | AVFMT_RGB24,
+    .extensions = "ppm",
+};
+
+static AVOutputFormat ppm_oformat = {
+    "ppm",
+    "ppm image format",
+    "",
+    "ppm",
+    sizeof(VideoData),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    img_write_header,
+    img_write_packet,
+    img_write_trailer,
+    AVFMT_NOFILE | AVFMT_NEEDNUMBER | AVFMT_RGB24,
+};
+
+static AVInputFormat imgyuv_iformat = {
+    ".Y.U.V",
+    ".Y.U.V format",
+    sizeof(VideoData),
+    NULL,
+    img_read_header,
+    img_read_packet,
+    img_read_close,
+    NULL,
+    AVFMT_NOFILE | AVFMT_NEEDNUMBER,
+    .extensions = "Y",
+};
+
+static AVOutputFormat imgyuv_oformat = {
+    ".Y.U.V",
+    ".Y.U.V format",
+    "",
+    "Y",
+    sizeof(VideoData),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    img_write_header,
+    img_write_packet,
+    img_write_trailer,
+    AVFMT_NOFILE | AVFMT_NEEDNUMBER,
+};
+
+static AVInputFormat pgmpipe_iformat = {
+    "pgmpipe",
+    "PGM pipe format",
+    sizeof(VideoData),
+    NULL, /* no probe */
+    img_read_header,
+    img_read_packet,
+    img_read_close,
+    NULL,
+};
+
+static AVOutputFormat pgmpipe_oformat = {
+    "pgmpipe",
+    "PGM pipe format",
+    "",
+    "pgm",
+    sizeof(VideoData),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    img_write_header,
+    img_write_packet,
+    img_write_trailer,
+};
+
+static AVInputFormat pgmyuvpipe_iformat = {
+    "pgmyuvpipe",
+    "PGM YUV pipe format",
+    sizeof(VideoData),
+    NULL, /* no probe */
+    img_read_header,
+    img_read_packet,
+    img_read_close,
+    NULL,
+};
+
+static AVOutputFormat pgmyuvpipe_oformat = {
+    "pgmyuvpipe",
+    "PGM YUV pipe format",
+    "",
+    "pgm",
+    sizeof(VideoData),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    img_write_header,
+    img_write_packet,
+    img_write_trailer,
+};
+
+static AVInputFormat ppmpipe_iformat = {
+    "ppmpipe",
+    "PPM pipe format",
+    sizeof(VideoData),
+    NULL, /* no probe */
+    img_read_header,
+    img_read_packet,
+    img_read_close,
+    NULL,
+    .flags = AVFMT_RGB24,
+};
+
+static AVOutputFormat ppmpipe_oformat = {
+    "ppmpipe",
+    "PPM pipe format",
+    "",
+    "ppm",
+    sizeof(VideoData),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    img_write_header,
+    img_write_packet,
+    img_write_trailer,
+    .flags = AVFMT_RGB24,
+};
+
+
+static AVOutputFormat yuv4mpegpipe_oformat = {
+    "yuv4mpegpipe",
+    "YUV4MPEG pipe format",
+    "",
+    "yuv4mpeg",
+    sizeof(VideoData),
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    img_write_header,
+    img_write_packet,
+    img_write_trailer,
+};
+
+
+int img_init(void)
+{
+    av_register_input_format(&pgm_iformat);
+    av_register_output_format(&pgm_oformat);
+
+    av_register_input_format(&pgmyuv_iformat);
+    av_register_output_format(&pgmyuv_oformat);
+
+    av_register_input_format(&ppm_iformat);
+    av_register_output_format(&ppm_oformat);
+
+    av_register_input_format(&imgyuv_iformat);
+    av_register_output_format(&imgyuv_oformat);
+    
+    av_register_input_format(&pgmpipe_iformat);
+    av_register_output_format(&pgmpipe_oformat);
+
+    av_register_input_format(&pgmyuvpipe_iformat);
+    av_register_output_format(&pgmyuvpipe_oformat);
+
+    av_register_input_format(&ppmpipe_iformat);
+    av_register_output_format(&ppmpipe_oformat);
+       
+    av_register_output_format(&yuv4mpegpipe_oformat);
+    
+    return 0;
+}

libavformat/jpeg.c

@@ -0,0 +1,266 @@
+/*
+ * JPEG based formats
+ * Copyright (c) 2000, 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+/* Multipart JPEG */
+
+#define BOUNDARY_TAG "ffserver"
+
+static int mpjpeg_write_header(AVFormatContext *s)
+{
+    UINT8 buf1[256];
+
+    snprintf(buf1, sizeof(buf1), "--%s\n", BOUNDARY_TAG);
+    put_buffer(&s->pb, buf1, strlen(buf1));
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static int mpjpeg_write_packet(AVFormatContext *s, int stream_index, 
+                               UINT8 *buf, int size, int force_pts)
+{
+    UINT8 buf1[256];
+
+    snprintf(buf1, sizeof(buf1), "Content-type: image/jpeg\n\n");
+    put_buffer(&s->pb, buf1, strlen(buf1));
+    put_buffer(&s->pb, buf, size);
+
+    snprintf(buf1, sizeof(buf1), "\n--%s\n", BOUNDARY_TAG);
+    put_buffer(&s->pb, buf1, strlen(buf1));
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static int mpjpeg_write_trailer(AVFormatContext *s)
+{
+    return 0;
+}
+
+static AVOutputFormat mpjpeg_format = {
+    "mpjpeg",
+    "Mime multipart JPEG format",
+    "multipart/x-mixed-replace;boundary=" BOUNDARY_TAG,
+    "mjpg",
+    0,
+    CODEC_ID_NONE,
+    CODEC_ID_MJPEG,
+    mpjpeg_write_header,
+    mpjpeg_write_packet,
+    mpjpeg_write_trailer,
+};
+
+
+/*************************************/
+/* single frame JPEG */
+
+static int single_jpeg_write_header(AVFormatContext *s)
+{
+    return 0;
+}
+
+static int single_jpeg_write_packet(AVFormatContext *s, int stream_index,
+                            UINT8 *buf, int size, int force_pts)
+{
+    put_buffer(&s->pb, buf, size);
+    put_flush_packet(&s->pb);
+    return 1; /* no more data can be sent */
+}
+
+static int single_jpeg_write_trailer(AVFormatContext *s)
+{
+    return 0;
+}
+
+static AVOutputFormat single_jpeg_format = {
+    "singlejpeg",
+    "single JPEG image",
+    "image/jpeg",
+    NULL, /* note: no extension to favorize jpeg multiple images match */
+    0,
+    CODEC_ID_NONE,
+    CODEC_ID_MJPEG,
+    single_jpeg_write_header,
+    single_jpeg_write_packet,
+    single_jpeg_write_trailer,
+};
+
+/*************************************/
+/* multiple jpeg images */
+
+typedef struct JpegContext {
+    char path[1024];
+    int img_number;
+} JpegContext;
+
+static int jpeg_write_header(AVFormatContext *s1)
+{
+    JpegContext *s;
+
+    s = av_mallocz(sizeof(JpegContext));
+    if (!s)
+        return -1;
+    s1->priv_data = s;
+    pstrcpy(s->path, sizeof(s->path), s1->filename);
+    s->img_number = 1;
+    return 0;
+}
+
+static int jpeg_write_packet(AVFormatContext *s1, int stream_index,
+                            UINT8 *buf, int size, int force_pts)
+{
+    JpegContext *s = s1->priv_data;
+    char filename[1024];
+    ByteIOContext f1, *pb = &f1;
+
+    if (get_frame_filename(filename, sizeof(filename), 
+                           s->path, s->img_number) < 0)
+        return -EIO;
+    if (url_fopen(pb, filename, URL_WRONLY) < 0)
+        return -EIO;
+
+    put_buffer(pb, buf, size);
+    put_flush_packet(pb);
+
+    url_fclose(pb);
+    s->img_number++;
+
+    return 0;
+}
+
+static int jpeg_write_trailer(AVFormatContext *s1)
+{
+    return 0;
+}
+
+/***/
+
+static int jpeg_read_header(AVFormatContext *s1, AVFormatParameters *ap)
+{
+    JpegContext *s;
+    int i;
+    char buf[1024];
+    ByteIOContext pb1, *f = &pb1;
+    AVStream *st;
+
+    s = av_mallocz(sizeof(JpegContext));
+    if (!s)
+        return -1;
+    s1->priv_data = s;
+    pstrcpy(s->path, sizeof(s->path), s1->filename);
+
+    s1->nb_streams = 1;
+    st = av_mallocz(sizeof(AVStream));
+    if (!st) {
+        av_free(s);
+        return -ENOMEM;
+    }
+    s1->streams[0] = st;
+    s->img_number = 0;
+
+    /* try to find the first image */
+    for(i=0;i<5;i++) {
+        if (get_frame_filename(buf, sizeof(buf), s->path, s->img_number) < 0)
+            goto fail;
+        if (url_fopen(f, buf, URL_RDONLY) >= 0)
+            break;
+        s->img_number++;
+    }
+    if (i == 5)
+        goto fail;
+    url_fclose(f);
+    st->codec.codec_type = CODEC_TYPE_VIDEO;
+    st->codec.codec_id = CODEC_ID_MJPEG;
+    
+    if (!ap || !ap->frame_rate)
+        st->codec.frame_rate = 25 * FRAME_RATE_BASE;
+    else
+        st->codec.frame_rate = ap->frame_rate;
+    return 0;
+ fail:
+    av_free(s);
+    return -EIO;
+}
+
+static int jpeg_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    JpegContext *s = s1->priv_data;
+    char filename[1024];
+    int size;
+    ByteIOContext f1, *f = &f1;
+
+    if (get_frame_filename(filename, sizeof(filename), 
+                           s->path, s->img_number) < 0)
+        return -EIO;
+    
+    f = &f1;
+    if (url_fopen(f, filename, URL_RDONLY) < 0)
+        return -EIO;
+    
+    size = url_seek(url_fileno(f), 0, SEEK_END);
+    url_seek(url_fileno(f), 0, SEEK_SET);
+
+    av_new_packet(pkt, size);
+    pkt->stream_index = 0;
+    get_buffer(f, pkt->data, size);
+
+    url_fclose(f);
+    s->img_number++;
+    return 0;
+}
+
+static int jpeg_read_close(AVFormatContext *s1)
+{
+    return 0;
+}
+
+static AVInputFormat jpeg_iformat = {
+    "jpeg",
+    "JPEG image",
+    sizeof(JpegContext),
+    NULL,
+    jpeg_read_header,
+    jpeg_read_packet,
+    jpeg_read_close,
+    NULL,
+    .flags = AVFMT_NOFILE | AVFMT_NEEDNUMBER,
+    .extensions = "jpg,jpeg",
+};
+
+static AVOutputFormat jpeg_oformat = {
+    "jpeg",
+    "JPEG image",
+    "image/jpeg",
+    "jpg,jpeg",
+    sizeof(JpegContext),
+    CODEC_ID_NONE,
+    CODEC_ID_MJPEG,
+    jpeg_write_header,
+    jpeg_write_packet,
+    jpeg_write_trailer,
+    .flags = AVFMT_NOFILE | AVFMT_NEEDNUMBER,
+};
+
+int jpeg_init(void)
+{
+    av_register_output_format(&mpjpeg_format);
+    av_register_output_format(&single_jpeg_format);
+    av_register_input_format(&jpeg_iformat);
+    av_register_output_format(&jpeg_oformat);
+    return 0;
+}

libavformat/mpeg.c

@@ -0,0 +1,685 @@
+/*
+ * MPEG1/2 mux/demux
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+#define MAX_PAYLOAD_SIZE 4096
+#define NB_STREAMS 2
+
+typedef struct {
+    UINT8 buffer[MAX_PAYLOAD_SIZE];
+    int buffer_ptr;
+    UINT8 id;
+    int max_buffer_size; /* in bytes */
+    int packet_number;
+    INT64 start_pts;
+} StreamInfo;
+
+typedef struct {
+    int packet_size; /* required packet size */
+    int packet_data_max_size; /* maximum data size inside a packet */
+    int packet_number;
+    int pack_header_freq;     /* frequency (in packets^-1) at which we send pack headers */
+    int system_header_freq;
+    int mux_rate; /* bitrate in units of 50 bytes/s */
+    /* stream info */
+    int audio_bound;
+    int video_bound;
+    int is_mpeg2;
+    int is_vcd;
+} MpegMuxContext;
+
+#define PACK_START_CODE             ((unsigned int)0x000001ba)
+#define SYSTEM_HEADER_START_CODE    ((unsigned int)0x000001bb)
+#define SEQUENCE_END_CODE           ((unsigned int)0x000001b7)
+#define PACKET_START_CODE_MASK      ((unsigned int)0xffffff00)
+#define PACKET_START_CODE_PREFIX    ((unsigned int)0x00000100)
+#define ISO_11172_END_CODE          ((unsigned int)0x000001b9)
+  
+/* mpeg2 */
+#define PROGRAM_STREAM_MAP 0x1bc
+#define PRIVATE_STREAM_1   0x1bd
+#define PADDING_STREAM     0x1be
+#define PRIVATE_STREAM_2   0x1bf
+
+
+#define AUDIO_ID 0xc0
+#define VIDEO_ID 0xe0
+
+extern AVOutputFormat mpeg1system_mux;
+extern AVOutputFormat mpeg1vcd_mux;
+extern AVOutputFormat mpeg2vob_mux;
+
+static int put_pack_header(AVFormatContext *ctx, 
+                           UINT8 *buf, INT64 timestamp)
+{
+    MpegMuxContext *s = ctx->priv_data;
+    PutBitContext pb;
+    
+    init_put_bits(&pb, buf, 128, NULL, NULL);
+
+    put_bits(&pb, 32, PACK_START_CODE);
+    if (s->is_mpeg2) {
+        put_bits(&pb, 2, 0x2);
+    } else {
+        put_bits(&pb, 4, 0x2);
+    }
+    put_bits(&pb, 3, (UINT32)((timestamp >> 30) & 0x07));
+    put_bits(&pb, 1, 1);
+    put_bits(&pb, 15, (UINT32)((timestamp >> 15) & 0x7fff));
+    put_bits(&pb, 1, 1);
+    put_bits(&pb, 15, (UINT32)((timestamp) & 0x7fff));
+    put_bits(&pb, 1, 1);
+    if (s->is_mpeg2) {
+        /* clock extension */
+        put_bits(&pb, 9, 0);
+        put_bits(&pb, 1, 1);
+    }
+    put_bits(&pb, 1, 1);
+    put_bits(&pb, 22, s->mux_rate);
+    put_bits(&pb, 1, 1);
+    if (s->is_mpeg2) {
+        put_bits(&pb, 5, 0x1f); /* reserved */
+        put_bits(&pb, 3, 0); /* stuffing length */
+    }
+    flush_put_bits(&pb);
+    return pbBufPtr(&pb) - pb.buf;
+}
+
+static int put_system_header(AVFormatContext *ctx, UINT8 *buf)
+{
+    MpegMuxContext *s = ctx->priv_data;
+    int size, rate_bound, i, private_stream_coded, id;
+    PutBitContext pb;
+
+    init_put_bits(&pb, buf, 128, NULL, NULL);
+
+    put_bits(&pb, 32, SYSTEM_HEADER_START_CODE);
+    put_bits(&pb, 16, 0);
+    put_bits(&pb, 1, 1);
+    
+    rate_bound = s->mux_rate; /* maximum bit rate of the multiplexed stream */
+    put_bits(&pb, 22, rate_bound);
+    put_bits(&pb, 1, 1); /* marker */
+    put_bits(&pb, 6, s->audio_bound);
+
+    put_bits(&pb, 1, 1); /* variable bitrate */
+    put_bits(&pb, 1, 1); /* non constrainted bit stream */
+    
+    put_bits(&pb, 1, 0); /* audio locked */
+    put_bits(&pb, 1, 0); /* video locked */
+    put_bits(&pb, 1, 1); /* marker */
+
+    put_bits(&pb, 5, s->video_bound);
+    put_bits(&pb, 8, 0xff); /* reserved byte */
+    
+    /* audio stream info */
+    private_stream_coded = 0;
+    for(i=0;i<ctx->nb_streams;i++) {
+        StreamInfo *stream = ctx->streams[i]->priv_data;
+        id = stream->id;
+        if (id < 0xc0) {
+            /* special case for private streams (AC3 use that) */
+            if (private_stream_coded)
+                continue;
+            private_stream_coded = 1;
+            id = 0xbd;
+        }
+        put_bits(&pb, 8, id); /* stream ID */
+        put_bits(&pb, 2, 3);
+        if (id < 0xe0) {
+            /* audio */
+            put_bits(&pb, 1, 0);
+            put_bits(&pb, 13, stream->max_buffer_size / 128);
+        } else {
+            /* video */
+            put_bits(&pb, 1, 1);
+            put_bits(&pb, 13, stream->max_buffer_size / 1024);
+        }
+    }
+    flush_put_bits(&pb);
+    size = pbBufPtr(&pb) - pb.buf;
+    /* patch packet size */
+    buf[4] = (size - 6) >> 8;
+    buf[5] = (size - 6) & 0xff;
+
+    return size;
+}
+
+static int mpeg_mux_init(AVFormatContext *ctx)
+{
+    MpegMuxContext *s = ctx->priv_data;
+    int bitrate, i, mpa_id, mpv_id, ac3_id;
+    AVStream *st;
+    StreamInfo *stream;
+
+    s->packet_number = 0;
+    s->is_vcd = (ctx->oformat == &mpeg1vcd_mux);
+    s->is_mpeg2 = (ctx->oformat == &mpeg2vob_mux);
+    
+    if (s->is_vcd)
+        s->packet_size = 2324; /* VCD packet size */
+    else
+        s->packet_size = 2048;
+        
+    /* startcode(4) + length(2) + flags(1) */
+    s->packet_data_max_size = s->packet_size - 7;
+    s->audio_bound = 0;
+    s->video_bound = 0;
+    mpa_id = AUDIO_ID;
+    ac3_id = 0x80;
+    mpv_id = VIDEO_ID;
+    for(i=0;i<ctx->nb_streams;i++) {
+        st = ctx->streams[i];
+        stream = av_mallocz(sizeof(StreamInfo));
+        if (!stream)
+            goto fail;
+        st->priv_data = stream;
+
+        switch(st->codec.codec_type) {
+        case CODEC_TYPE_AUDIO:
+            if (st->codec.codec_id == CODEC_ID_AC3)
+                stream->id = ac3_id++;
+            else
+                stream->id = mpa_id++;
+            stream->max_buffer_size = 4 * 1024; 
+            s->audio_bound++;
+            break;
+        case CODEC_TYPE_VIDEO:
+            stream->id = mpv_id++;
+            stream->max_buffer_size = 46 * 1024; 
+            s->video_bound++;
+            break;
+        default:
+            av_abort();
+        }
+    }
+
+    /* we increase slightly the bitrate to take into account the
+       headers. XXX: compute it exactly */
+    bitrate = 2000;
+    for(i=0;i<ctx->nb_streams;i++) {
+        st = ctx->streams[i];
+        bitrate += st->codec.bit_rate;
+    }
+    s->mux_rate = (bitrate + (8 * 50) - 1) / (8 * 50);
+    
+    if (s->is_vcd || s->is_mpeg2)
+        /* every packet */
+        s->pack_header_freq = 1;
+    else
+        /* every 2 seconds */
+        s->pack_header_freq = 2 * bitrate / s->packet_size / 8;
+    
+    if (s->is_mpeg2)
+        /* every 200 packets. Need to look at the spec.  */
+        s->system_header_freq = s->pack_header_freq * 40;
+    else if (s->is_vcd)
+        /* every 40 packets, this is my invention */
+        s->system_header_freq = s->pack_header_freq * 40;
+    else
+        s->system_header_freq = s->pack_header_freq * 5;
+    
+    for(i=0;i<ctx->nb_streams;i++) {
+        stream = ctx->streams[i]->priv_data;
+        stream->buffer_ptr = 0;
+        stream->packet_number = 0;
+        stream->start_pts = -1;
+    }
+    return 0;
+ fail:
+    for(i=0;i<ctx->nb_streams;i++) {
+        av_free(ctx->streams[i]->priv_data);
+    }
+    return -ENOMEM;
+}
+
+/* flush the packet on stream stream_index */
+static void flush_packet(AVFormatContext *ctx, int stream_index, int last_pkt)
+{
+    MpegMuxContext *s = ctx->priv_data;
+    StreamInfo *stream = ctx->streams[stream_index]->priv_data;
+    UINT8 *buf_ptr;
+    int size, payload_size, startcode, id, len, stuffing_size, i, header_len;
+    INT64 timestamp;
+    UINT8 buffer[128];
+    int last = last_pkt ? 4 : 0;
+    
+    id = stream->id;
+    timestamp = stream->start_pts;
+
+#if 0
+    printf("packet ID=%2x PTS=%0.3f\n", 
+           id, timestamp / 90000.0);
+#endif
+
+    buf_ptr = buffer;
+    if (((s->packet_number % s->pack_header_freq) == 0)) {
+        /* output pack and systems header if needed */
+        size = put_pack_header(ctx, buf_ptr, timestamp);
+        buf_ptr += size;
+        if ((s->packet_number % s->system_header_freq) == 0) {
+            size = put_system_header(ctx, buf_ptr);
+            buf_ptr += size;
+        }
+    }
+    size = buf_ptr - buffer;
+    put_buffer(&ctx->pb, buffer, size);
+
+    /* packet header */
+    if (s->is_mpeg2) {
+        header_len = 8;
+    } else {
+        header_len = 5;
+    }
+    payload_size = s->packet_size - (size + 6 + header_len + last);
+    if (id < 0xc0) {
+        startcode = PRIVATE_STREAM_1;
+        payload_size -= 4;
+    } else {
+        startcode = 0x100 + id;
+    }
+    stuffing_size = payload_size - stream->buffer_ptr;
+    if (stuffing_size < 0)
+        stuffing_size = 0;
+
+    put_be32(&ctx->pb, startcode);
+
+    put_be16(&ctx->pb, payload_size + header_len);
+    /* stuffing */
+    for(i=0;i<stuffing_size;i++)
+        put_byte(&ctx->pb, 0xff);
+
+    if (s->is_mpeg2) {
+        put_byte(&ctx->pb, 0x80); /* mpeg2 id */
+        put_byte(&ctx->pb, 0x80); /* flags */
+        put_byte(&ctx->pb, 0x05); /* header len (only pts is included) */
+    }
+    put_byte(&ctx->pb, 
+             (0x02 << 4) | 
+             (((timestamp >> 30) & 0x07) << 1) | 
+             1);
+    put_be16(&ctx->pb, (UINT16)((((timestamp >> 15) & 0x7fff) << 1) | 1));
+    put_be16(&ctx->pb, (UINT16)((((timestamp) & 0x7fff) << 1) | 1));
+
+    if (startcode == PRIVATE_STREAM_1) {
+        put_byte(&ctx->pb, id);
+        if (id >= 0x80 && id <= 0xbf) {
+            /* XXX: need to check AC3 spec */
+            put_byte(&ctx->pb, 1);
+            put_byte(&ctx->pb, 0);
+            put_byte(&ctx->pb, 2);
+        }
+    }
+
+    if (last_pkt) {
+        put_be32(&ctx->pb, ISO_11172_END_CODE);
+    }
+    /* output data */
+    put_buffer(&ctx->pb, stream->buffer, payload_size - stuffing_size);
+    put_flush_packet(&ctx->pb);
+    
+    /* preserve remaining data */
+    len = stream->buffer_ptr - payload_size;
+    if (len < 0) 
+        len = 0;
+    memmove(stream->buffer, stream->buffer + stream->buffer_ptr - len, len);
+    stream->buffer_ptr = len;
+
+    s->packet_number++;
+    stream->packet_number++;
+    stream->start_pts = -1;
+}
+
+static int mpeg_mux_write_packet(AVFormatContext *ctx, int stream_index,
+                                 UINT8 *buf, int size, int pts)
+{
+    MpegMuxContext *s = ctx->priv_data;
+    AVStream *st = ctx->streams[stream_index];
+    StreamInfo *stream = st->priv_data;
+    int len;
+    
+    while (size > 0) {
+        /* set pts */
+        if (stream->start_pts == -1) {
+            stream->start_pts = pts;
+        }
+        len = s->packet_data_max_size - stream->buffer_ptr;
+        if (len > size)
+            len = size;
+        memcpy(stream->buffer + stream->buffer_ptr, buf, len);
+        stream->buffer_ptr += len;
+        buf += len;
+        size -= len;
+        while (stream->buffer_ptr >= s->packet_data_max_size) {
+            /* output the packet */
+            if (stream->start_pts == -1)
+                stream->start_pts = pts;
+            flush_packet(ctx, stream_index, 0);
+        }
+    }
+    return 0;
+}
+
+static int mpeg_mux_end(AVFormatContext *ctx)
+{
+    StreamInfo *stream;
+    int i;
+
+    /* flush each packet */
+    for(i=0;i<ctx->nb_streams;i++) {
+        stream = ctx->streams[i]->priv_data;
+        if (stream->buffer_ptr > 0) {
+            if (i == (ctx->nb_streams - 1)) 
+                flush_packet(ctx, i, 1);
+            else
+                flush_packet(ctx, i, 0);
+        }
+    }
+
+    /* write the end header */
+    //put_be32(&ctx->pb, ISO_11172_END_CODE);
+    //put_flush_packet(&ctx->pb);
+    return 0;
+}
+
+/*********************************************/
+/* demux code */
+
+#define MAX_SYNC_SIZE 100000
+
+static int mpegps_probe(AVProbeData *p)
+{
+    int code, c, i;
+    code = 0xff;
+
+    /* we search the first start code. If it is a packet start code,
+       then we decide it is mpeg ps. We do not send highest value to
+       give a chance to mpegts */
+    for(i=0;i<p->buf_size;i++) {
+        c = p->buf[i];
+        code = (code << 8) | c;
+        if ((code & 0xffffff00) == 0x100) {
+            if (code == PACK_START_CODE ||
+                code == SYSTEM_HEADER_START_CODE ||
+                (code >= 0x1e0 && code <= 0x1ef) ||
+                (code >= 0x1c0 && code <= 0x1df) ||
+                code == PRIVATE_STREAM_2 ||
+                code == PROGRAM_STREAM_MAP ||
+                code == PRIVATE_STREAM_1 ||
+                code == PADDING_STREAM)
+                return AVPROBE_SCORE_MAX - 1;
+            else
+                return 0;
+        }
+    }
+    return 0;
+}
+
+
+typedef struct MpegDemuxContext {
+    int header_state;
+} MpegDemuxContext;
+
+static int find_start_code(ByteIOContext *pb, int *size_ptr, 
+                           UINT32 *header_state)
+{
+    unsigned int state, v;
+    int val, n;
+
+    state = *header_state;
+    n = *size_ptr;
+    while (n > 0) {
+        if (url_feof(pb))
+            break;
+        v = get_byte(pb);
+        n--;
+        if (state == 0x000001) {
+            state = ((state << 8) | v) & 0xffffff;
+            val = state;
+            goto found;
+        }
+        state = ((state << 8) | v) & 0xffffff;
+    }
+    val = -1;
+ found:
+    *header_state = state;
+    *size_ptr = n;
+    return val;
+}
+
+static int mpegps_read_header(AVFormatContext *s,
+                                  AVFormatParameters *ap)
+{
+    MpegDemuxContext *m = s->priv_data;
+    m->header_state = 0xff;
+    /* no need to do more */
+    return 0;
+}
+
+static INT64 get_pts(ByteIOContext *pb, int c)
+{
+    INT64 pts;
+    int val;
+
+    if (c < 0)
+        c = get_byte(pb);
+    pts = (INT64)((c >> 1) & 0x07) << 30;
+    val = get_be16(pb);
+    pts |= (INT64)(val >> 1) << 15;
+    val = get_be16(pb);
+    pts |= (INT64)(val >> 1);
+    return pts;
+}
+
+static int mpegps_read_packet(AVFormatContext *s,
+                                  AVPacket *pkt)
+{
+    MpegDemuxContext *m = s->priv_data;
+    AVStream *st;
+    int len, size, startcode, i, c, flags, header_len, type, codec_id;
+    INT64 pts, dts;
+
+    /* next start code (should be immediately after) */
+ redo:
+    m->header_state = 0xff;
+    size = MAX_SYNC_SIZE;
+    startcode = find_start_code(&s->pb, &size, &m->header_state);
+    //printf("startcode=%x pos=0x%Lx\n", startcode, url_ftell(&s->pb));
+    if (startcode < 0)
+        return -EIO;
+    if (startcode == PACK_START_CODE)
+        goto redo;
+    if (startcode == SYSTEM_HEADER_START_CODE)
+        goto redo;
+    if (startcode == PADDING_STREAM ||
+        startcode == PRIVATE_STREAM_2) {
+        /* skip them */
+        len = get_be16(&s->pb);
+        url_fskip(&s->pb, len);
+        goto redo;
+    }
+    /* find matching stream */
+    if (!((startcode >= 0x1c0 && startcode <= 0x1df) ||
+          (startcode >= 0x1e0 && startcode <= 0x1ef) ||
+          (startcode == 0x1bd)))
+        goto redo;
+
+    len = get_be16(&s->pb);
+    pts = AV_NOPTS_VALUE;
+    dts = AV_NOPTS_VALUE;
+    /* stuffing */
+    for(;;) {
+        c = get_byte(&s->pb);
+        len--;
+        /* XXX: for mpeg1, should test only bit 7 */
+        if (c != 0xff) 
+            break;
+    }
+    if ((c & 0xc0) == 0x40) {
+        /* buffer scale & size */
+        get_byte(&s->pb);
+        c = get_byte(&s->pb);
+        len -= 2;
+    }
+    if ((c & 0xf0) == 0x20) {
+        pts = get_pts(&s->pb, c);
+        len -= 4;
+    } else if ((c & 0xf0) == 0x30) {
+        pts = get_pts(&s->pb, c);
+        dts = get_pts(&s->pb, -1);
+        len -= 9;
+    } else if ((c & 0xc0) == 0x80) {
+        /* mpeg 2 PES */
+        if ((c & 0x30) != 0) {
+            fprintf(stderr, "Encrypted multiplex not handled\n");
+            return -EIO;
+        }
+        flags = get_byte(&s->pb);
+        header_len = get_byte(&s->pb);
+        len -= 2;
+        if (header_len > len)
+            goto redo;
+        if ((flags & 0xc0) == 0x80) {
+            pts = get_pts(&s->pb, -1);
+            header_len -= 5;
+            len -= 5;
+        } if ((flags & 0xc0) == 0xc0) {
+            pts = get_pts(&s->pb, -1);
+            dts = get_pts(&s->pb, -1);
+            header_len -= 10;
+            len -= 10;
+        }
+        len -= header_len;
+        while (header_len > 0) {
+            get_byte(&s->pb);
+            header_len--;
+        }
+    }
+    if (startcode == 0x1bd) {
+        startcode = get_byte(&s->pb);
+        len--;
+        if (startcode >= 0x80 && startcode <= 0xbf) {
+            /* audio: skip header */
+            get_byte(&s->pb);
+            get_byte(&s->pb);
+            get_byte(&s->pb);
+            len -= 3;
+        }
+    }
+
+    /* now find stream */
+    for(i=0;i<s->nb_streams;i++) {
+        st = s->streams[i];
+        if (st->id == startcode)
+            goto found;
+    }
+    if (startcode >= 0x1e0 && startcode <= 0x1ef) {
+        type = CODEC_TYPE_VIDEO;
+        codec_id = CODEC_ID_MPEG1VIDEO;
+    } else if (startcode >= 0x1c0 && startcode <= 0x1df) {
+        type = CODEC_TYPE_AUDIO;
+        codec_id = CODEC_ID_MP2;
+    } else if (startcode >= 0x80 && startcode <= 0x9f) {
+        type = CODEC_TYPE_AUDIO;
+        codec_id = CODEC_ID_AC3;
+    } else {
+    skip:
+        /* skip packet */
+        url_fskip(&s->pb, len);
+        goto redo;
+    }
+    /* no stream found: add a new stream */
+    st = av_new_stream(s, startcode);
+    if (!st) 
+        goto skip;
+    st->codec.codec_type = type;
+    st->codec.codec_id = codec_id;
+ found:
+    av_new_packet(pkt, len);
+    //printf("\nRead Packet ID: %x PTS: %f Size: %d", startcode,
+    //       (float)pts/90000, len);
+    get_buffer(&s->pb, pkt->data, pkt->size);
+    pkt->pts = pts;
+    pkt->stream_index = st->index;
+    return 0;
+}
+
+static int mpegps_read_close(AVFormatContext *s)
+{
+    return 0;
+}
+
+static AVOutputFormat mpeg1system_mux = {
+    "mpeg",
+    "MPEG1 System format",
+    "video/x-mpeg",
+    "mpg,mpeg",
+    sizeof(MpegMuxContext),
+    CODEC_ID_MP2,
+    CODEC_ID_MPEG1VIDEO,
+    mpeg_mux_init,
+    mpeg_mux_write_packet,
+    mpeg_mux_end,
+};
+
+static AVOutputFormat mpeg1vcd_mux = {
+    "vcd",
+    "MPEG1 System format (VCD)",
+    "video/x-mpeg",
+    NULL,
+    sizeof(MpegMuxContext),
+    CODEC_ID_MP2,
+    CODEC_ID_MPEG1VIDEO,
+    mpeg_mux_init,
+    mpeg_mux_write_packet,
+    mpeg_mux_end,
+};
+
+static AVOutputFormat mpeg2vob_mux = {
+    "vob",
+    "MPEG2 PS format (VOB)",
+    "video/x-mpeg",
+    "vob",
+    sizeof(MpegMuxContext),
+    CODEC_ID_MP2,
+    CODEC_ID_MPEG1VIDEO,
+    mpeg_mux_init,
+    mpeg_mux_write_packet,
+    mpeg_mux_end,
+};
+
+static AVInputFormat mpegps_demux = {
+    "mpeg",
+    "MPEG PS format",
+    sizeof(MpegDemuxContext),
+    mpegps_probe,
+    mpegps_read_header,
+    mpegps_read_packet,
+    mpegps_read_close,
+    .flags = AVFMT_NOHEADER,
+};
+
+int mpegps_init(void)
+{
+    av_register_output_format(&mpeg1system_mux);
+    av_register_output_format(&mpeg1vcd_mux);
+    av_register_output_format(&mpeg2vob_mux);
+    av_register_input_format(&mpegps_demux);
+    return 0;
+}

libavformat/mpegts.c

@@ -0,0 +1,316 @@
+/*
+ * MPEG2 transport stream (aka DVB) demux
+ * Copyright (c) 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+#define TS_FEC_PACKET_SIZE 204
+#define TS_PACKET_SIZE 188
+#define NB_PID_MAX 8192
+
+enum MpegTSState {
+    MPEGTS_HEADER = 0,
+    MPEGTS_PESHEADER_FILL,
+    MPEGTS_PESHEADER_FLAGS,
+    MPEGTS_PESHEADER_SIZE,
+    MPEGTS_PESHEADER_READ,
+    MPEGTS_PAYLOAD,
+    MPEGTS_SKIP,
+};
+
+/* enough for PES header + length */
+#define MAX_HEADER_SIZE 6
+
+typedef struct MpegTSStream {
+    int pid;
+    enum MpegTSState state;
+    int last_cc; /* last cc code (-1 if first packet) */
+    /* used to get the format */
+    int header_size;
+    int payload_size;
+    int pes_header_size;
+    AVStream *st;
+    unsigned char header[MAX_HEADER_SIZE];
+} MpegTSStream;
+
+typedef struct MpegTSContext {
+    int raw_packet_size; /* raw packet size, including FEC if present */
+    MpegTSStream *pids[NB_PID_MAX];
+} MpegTSContext;
+
+/* autodetect fec presence. Must have at least 1024 bytes  */
+static int get_packet_size(const unsigned char *buf, int size)
+{
+    int i;
+
+    if (size < (TS_FEC_PACKET_SIZE * 5 + 1))
+        return -1;
+    for(i=0;i<5;i++) {
+        if (buf[i * TS_PACKET_SIZE] != 0x47)
+            goto try_fec;
+    }
+    return TS_PACKET_SIZE;
+ try_fec:
+    for(i=0;i<5;i++) {
+        if (buf[i * TS_FEC_PACKET_SIZE] != 0x47)
+            return -1;
+    }
+    return TS_FEC_PACKET_SIZE;
+}
+
+static int mpegts_probe(AVProbeData *p)
+{
+    int size;
+    size = get_packet_size(p->buf, p->buf_size);
+    if (size < 0)
+        return 0;
+    return AVPROBE_SCORE_MAX;
+}
+
+static int mpegts_read_header(AVFormatContext *s,
+                              AVFormatParameters *ap)
+{
+    MpegTSContext *ts = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    unsigned char buf[1024];
+    int len;
+    INT64 pos;
+
+    /* read the first 1024 bytes to get packet size */
+    pos = url_ftell(pb);
+    len = get_buffer(pb, buf, sizeof(buf));
+    if (len != sizeof(buf))
+        goto fail;
+    ts->raw_packet_size = get_packet_size(buf, sizeof(buf));
+    if (ts->raw_packet_size <= 0)
+        goto fail;
+    /* go again to the start */
+    url_fseek(pb, pos, SEEK_SET);
+    return 0;
+ fail:
+    return -1;
+}
+
+/* return non zero if a packet could be constructed */
+static int mpegts_push_data(AVFormatContext *s, MpegTSStream *tss,
+                            AVPacket *pkt,
+                            const unsigned char *buf, int buf_size, int is_start)
+{
+    AVStream *st;
+    const unsigned char *p;
+    int len, code, codec_type, codec_id;
+
+    if (is_start) {
+        tss->state = MPEGTS_HEADER;
+        tss->header_size = 0;
+    }
+    p = buf;
+    while (buf_size > 0) {
+        len = buf_size;
+        switch(tss->state) {
+        case MPEGTS_HEADER:
+            if (len > MAX_HEADER_SIZE - tss->header_size)
+                len = MAX_HEADER_SIZE - tss->header_size;
+            memcpy(tss->header, p, len);
+            tss->header_size += len;
+            p += len;
+            buf_size -= len;
+            if (tss->header_size == MAX_HEADER_SIZE) {
+                /* we got all the PES or section header. We can now
+                   decide */
+#if 0
+                av_hex_dump(tss->header, tss->header_size);
+#endif
+                if (tss->header[0] == 0x00 && tss->header[1] == 0x00 &&
+                    tss->header[2] == 0x01) {
+                    /* it must be an mpeg2 PES stream */
+                    /* XXX: add AC3 support */
+                    code = tss->header[3] | 0x100;
+                    if (!((code >= 0x1c0 && code <= 0x1df) ||
+                          (code >= 0x1e0 && code <= 0x1ef)))
+                        goto skip;
+                    if (!tss->st) {
+                        /* allocate stream */
+                        if (code >= 0x1c0 && code <= 0x1df) {
+                            codec_type = CODEC_TYPE_AUDIO;
+                            codec_id = CODEC_ID_MP2;
+                        } else {
+                            codec_type = CODEC_TYPE_VIDEO;
+                            codec_id = CODEC_ID_MPEG1VIDEO;
+                        }
+                        st = av_new_stream(s, tss->pid);
+                        if (st) {
+                            st->priv_data = tss;
+                            st->codec.codec_type = codec_type;
+                            st->codec.codec_id = codec_id;
+                            tss->st = st;
+                        }
+                    }
+                    tss->state = MPEGTS_PESHEADER_FILL;
+                    tss->payload_size = (tss->header[4] << 8) | tss->header[5];
+                    if (tss->payload_size == 0)
+                        tss->payload_size = 65536;
+                } else {
+                    /* otherwise, it should be a table */
+                    /* skip packet */
+                skip:
+                    tss->state = MPEGTS_SKIP;
+                    continue;
+                }
+            }
+            break;
+            /**********************************************/
+            /* PES packing parsing */
+        case MPEGTS_PESHEADER_FILL:
+            /* skip filling */
+            code = *p++;
+            buf_size--;
+            tss->payload_size--;
+            if (code != 0xff) {
+                if ((code & 0xc0) != 0x80)
+                    goto skip;
+                tss->state = MPEGTS_PESHEADER_FLAGS;
+            }
+            break;
+        case MPEGTS_PESHEADER_FLAGS:
+            code = *p++;
+            buf_size--;
+            tss->payload_size--;
+            tss->state = MPEGTS_PESHEADER_SIZE;
+            break;
+        case MPEGTS_PESHEADER_SIZE:
+            tss->pes_header_size = *p++;
+            buf_size--;
+            tss->payload_size--;
+            tss->state = MPEGTS_PESHEADER_READ;
+            break;
+        case MPEGTS_PESHEADER_READ:
+            /* currently we do nothing except skipping */
+            if (len > tss->pes_header_size)
+                len = tss->pes_header_size;
+            p += len;
+            buf_size -= len;
+            tss->pes_header_size -= len;
+            tss->payload_size -= len;
+            if (tss->pes_header_size == 0)
+                tss->state = MPEGTS_PAYLOAD;
+            break;
+        case MPEGTS_PAYLOAD:
+            if (len > tss->payload_size)
+                len = tss->payload_size;
+            if (len > 0) {
+                if (tss->st && av_new_packet(pkt, buf_size) == 0) {
+                    memcpy(pkt->data, p, buf_size);
+                    pkt->stream_index = tss->st->index;
+                    return 1;
+                }
+                tss->payload_size -= len;
+            }
+            buf_size = 0;
+            break;
+        case MPEGTS_SKIP:
+            buf_size = 0;
+            break;
+        }
+    }
+    return 0;
+}
+
+static int mpegts_read_packet(AVFormatContext *s,
+                              AVPacket *pkt)
+{
+    MpegTSContext *ts = s->priv_data;
+    MpegTSStream *tss;
+    ByteIOContext *pb = &s->pb;
+    unsigned char packet[TS_FEC_PACKET_SIZE];
+    int len, pid, cc, cc_ok, afc;
+    const unsigned char *p;
+    
+    for(;;) {
+        len = get_buffer(pb, packet, ts->raw_packet_size);
+        if (len != ts->raw_packet_size)
+            return AVERROR_IO;
+        /* check paquet sync byte */
+        /* XXX: accept to resync ? */
+        if (packet[0] != 0x47)
+            return AVERROR_INVALIDDATA;
+        
+        pid = ((packet[1] & 0x1f) << 8) | packet[2];
+        tss = ts->pids[pid];
+        if (tss == NULL) {
+            /* if no pid found, then add a pid context */
+            tss = av_mallocz(sizeof(MpegTSStream));
+            if (!tss) 
+                continue;
+            ts->pids[pid] = tss;
+            tss->pid = pid;
+            tss->last_cc = -1;
+            //            printf("new pid=0x%x\n", pid);
+        }
+
+        /* continuity check (currently not used) */
+        cc = (packet[3] & 0xf);
+        cc_ok = (tss->last_cc < 0) || ((((tss->last_cc + 1) & 0x0f) == cc));
+        tss->last_cc = cc;
+        
+        /* skip adaptation field */
+        afc = (packet[3] >> 4) & 3;
+        p = packet + 4;
+        if (afc == 0) /* reserved value */
+            continue;
+        if (afc == 2) /* adaptation field only */
+            continue;
+        if (afc == 3) {
+            /* skip adapation field */
+            p += p[0] + 1;
+        }
+        /* if past the end of packet, ignore */
+        if (p >= packet + TS_PACKET_SIZE)
+            continue;
+    
+        if (mpegts_push_data(s, tss, pkt, p, TS_PACKET_SIZE - (p - packet), 
+                             packet[1] & 0x40))
+            break;
+    }
+    return 0;
+}
+
+static int mpegts_read_close(AVFormatContext *s)
+{
+    MpegTSContext *ts = s->priv_data;
+    int i;
+    for(i=0;i<NB_PID_MAX;i++)
+        av_free(ts->pids[i]);
+    return 0;
+}
+
+AVInputFormat mpegts_demux = {
+    "mpegts",
+    "MPEG2 transport stream format",
+    sizeof(MpegTSContext),
+    mpegts_probe,
+    mpegts_read_header,
+    mpegts_read_packet,
+    mpegts_read_close,
+    .flags = AVFMT_NOHEADER | AVFMT_SHOW_IDS,
+};
+
+int mpegts_init(void)
+{
+    av_register_input_format(&mpegts_demux);
+    return 0;
+}

libavformat/ogg.c

@@ -0,0 +1,269 @@
+/*
+ * Ogg bitstream support
+ * Mark Hills <mark@pogo.org.uk>
+ *
+ * Uses libogg, but requires libvorbisenc to construct correct headers
+ * when containing Vorbis stream -- currently the only format supported
+ */
+
+#include <stdio.h>
+#include <time.h>
+
+#include <ogg/ogg.h>
+#include <vorbis/vorbisenc.h>
+
+#include "avformat.h"
+#include "oggvorbis.h"
+
+#define DECODER_BUFFER_SIZE 4096
+
+
+typedef struct OggContext {
+    /* output */
+    ogg_stream_state os ;
+    int header_handled ;
+    ogg_int64_t base_packet_no ;
+    ogg_int64_t base_granule_pos ;
+
+    /* input */
+    ogg_sync_state oy ;
+} OggContext ;
+
+
+static int ogg_write_header(AVFormatContext *avfcontext) {
+    OggContext *context ;
+    AVCodecContext *avccontext ;
+    vorbis_info vi ;
+    vorbis_dsp_state vd ;
+    vorbis_comment vc ;
+    vorbis_block vb ;
+    ogg_packet header, header_comm, header_code ; 
+    int n ;
+    
+    if(!(context = malloc(sizeof(OggContext))))
+	return -1 ;
+    avfcontext->priv_data = context ;
+    
+    srand(time(NULL));
+    ogg_stream_init(&context->os, rand());
+    
+    for(n = 0 ; n < avfcontext->nb_streams ; n++) {
+	avccontext = &avfcontext->streams[n]->codec ;
+
+	/* begin vorbis specific code */
+		
+	vorbis_info_init(&vi) ;
+
+	/* code copied from libavcodec/oggvorbis.c */
+
+	if(oggvorbis_init_encoder(&vi, avccontext) < 0) {
+	    fprintf(stderr, "ogg_write_header: init_encoder failed") ;
+	    return -1 ;
+	}
+
+	vorbis_analysis_init(&vd, &vi) ;
+	vorbis_block_init(&vd, &vb) ;
+	
+	vorbis_comment_init(&vc) ;
+	vorbis_comment_add_tag(&vc, "encoder", "ffmpeg") ;
+	if(*avfcontext->title)
+	    vorbis_comment_add_tag(&vc, "title", avfcontext->title) ;
+
+	vorbis_analysis_headerout(&vd, &vc, &header,
+				  &header_comm, &header_code) ;
+	ogg_stream_packetin(&context->os, &header) ;
+	ogg_stream_packetin(&context->os, &header_comm) ;
+	ogg_stream_packetin(&context->os, &header_code) ;  
+	
+	vorbis_comment_clear(&vc) ;
+
+	/* end of vorbis specific code */
+
+	context->header_handled = 0 ;
+	context->base_packet_no = 0 ;
+    }
+    
+    return 0 ;
+}
+
+
+static int ogg_write_packet(AVFormatContext *avfcontext,
+			    int stream_index,
+			    unsigned char *buf, int size, int force_pts)
+{
+    OggContext *context = avfcontext->priv_data ;
+    ogg_packet *op ;
+    ogg_page og ;
+    int l = 0 ;
+    
+    /* flush header packets so audio starts on a new page */
+
+    if(!context->header_handled) {
+	while(ogg_stream_flush(&context->os, &og)) {
+	    put_buffer(&avfcontext->pb, og.header, og.header_len) ;
+	    put_buffer(&avfcontext->pb, og.body, og.body_len) ;
+	    put_flush_packet(&avfcontext->pb);
+	}
+	context->header_handled = 1 ;
+    }
+
+    while(l < size) {
+	op = (ogg_packet*)(buf + l) ;
+	op->packet = buf + l + sizeof(ogg_packet) ; /* fix data pointer */
+
+	if(!context->base_packet_no) { /* this is the first packet */
+	    context->base_packet_no = op->packetno ; 
+	    context->base_granule_pos = op->granulepos ;
+	}
+
+	/* correct the fields in the packet -- essential for streaming */
+
+	op->packetno -= context->base_packet_no ;
+	op->granulepos -= context->base_granule_pos ;
+
+	ogg_stream_packetin(&context->os, op) ;
+	l += sizeof(ogg_packet) + op->bytes ;
+
+	while(ogg_stream_pageout(&context->os, &og)) {
+	    put_buffer(&avfcontext->pb, og.header, og.header_len) ;
+	    put_buffer(&avfcontext->pb, og.body, og.body_len) ;
+	    put_flush_packet(&avfcontext->pb);
+	}
+    }
+
+    return 0;
+}
+
+
+static int ogg_write_trailer(AVFormatContext *avfcontext) {
+    OggContext *context = avfcontext->priv_data ;
+    ogg_page og ;
+
+    while(ogg_stream_flush(&context->os, &og)) {
+	put_buffer(&avfcontext->pb, og.header, og.header_len) ;
+	put_buffer(&avfcontext->pb, og.body, og.body_len) ;
+	put_flush_packet(&avfcontext->pb);
+    }
+
+    ogg_stream_clear(&context->os) ;
+    return 0 ;
+}
+
+
+static AVOutputFormat ogg_oformat = {
+    "ogg",
+    "Ogg Vorbis",
+    "audio/x-vorbis",
+    "ogg",
+    sizeof(OggContext),
+    CODEC_ID_VORBIS,
+    0,
+    ogg_write_header,
+    ogg_write_packet,
+    ogg_write_trailer,
+} ;
+
+
+static int next_packet(AVFormatContext *avfcontext, ogg_packet *op) {
+    OggContext *context = avfcontext->priv_data ;
+    ogg_page og ;
+    char *buf ;
+
+    while(ogg_stream_packetout(&context->os, op) != 1) {
+
+	/* while no pages are available, read in more data to the sync */
+	while(ogg_sync_pageout(&context->oy, &og) != 1) {
+	    buf = ogg_sync_buffer(&context->oy, DECODER_BUFFER_SIZE) ;
+	    if(get_buffer(&avfcontext->pb, buf, DECODER_BUFFER_SIZE) <= 0)
+		return 1 ;
+	    ogg_sync_wrote(&context->oy, DECODER_BUFFER_SIZE) ; 
+	}	
+	
+	/* got a page. Feed it into the stream and get the packet */
+	if(ogg_stream_pagein(&context->os, &og) != 0)
+	    return 1 ;
+    }
+
+    return 0 ;
+}
+
+
+static int ogg_read_header(AVFormatContext *avfcontext, AVFormatParameters *ap)
+{
+    OggContext *context ;
+    char *buf ;
+    ogg_page og ;
+    AVStream *ast ;
+    
+    if(!(context = malloc(sizeof(OggContext)))) {
+	perror("malloc") ;
+	return -1 ;
+    }
+    avfcontext->priv_data = context ;
+
+    ogg_sync_init(&context->oy) ;
+    buf = ogg_sync_buffer(&context->oy, DECODER_BUFFER_SIZE) ;
+
+    if(get_buffer(&avfcontext->pb, buf, DECODER_BUFFER_SIZE) <= 0)
+	return -EIO ;
+    
+    ogg_sync_wrote(&context->oy, DECODER_BUFFER_SIZE) ;   
+    ogg_sync_pageout(&context->oy, &og) ;
+    ogg_stream_init(&context->os, ogg_page_serialno(&og)) ;
+    ogg_stream_pagein(&context->os, &og) ;
+  
+    /* currently only one vorbis stream supported */
+
+    ast = av_new_stream(avfcontext, 0) ;
+    if(!ast)
+	return AVERROR_NOMEM ;
+
+    ast->codec.codec_type = CODEC_TYPE_AUDIO ;
+    ast->codec.codec_id = CODEC_ID_VORBIS ;
+    
+    return 0 ;
+}
+
+
+static int ogg_read_packet(AVFormatContext *avfcontext, AVPacket *pkt) {
+    ogg_packet op ;
+
+    if(next_packet(avfcontext, &op)) 
+	return -EIO ;
+    if(av_new_packet(pkt, sizeof(ogg_packet) + op.bytes) < 0)
+	return -EIO ;
+    pkt->stream_index = 0 ;
+    memcpy(pkt->data, &op, sizeof(ogg_packet)) ;
+    memcpy(pkt->data + sizeof(ogg_packet), op.packet, op.bytes) ;
+
+    return sizeof(ogg_packet) + op.bytes ;
+}
+
+
+static int ogg_read_close(AVFormatContext *avfcontext) {
+    OggContext *context = avfcontext->priv_data ;
+
+    ogg_stream_clear(&context->os) ;
+    ogg_sync_clear(&context->oy) ;
+
+    return 0 ;
+}
+
+
+static AVInputFormat ogg_iformat = {
+    "ogg",
+    "Ogg Vorbis",
+    sizeof(OggContext),
+    NULL,
+    ogg_read_header,
+    ogg_read_packet,
+    ogg_read_close,
+    .extensions = "ogg",
+} ;
+
+
+int ogg_init(void) {
+    av_register_output_format(&ogg_oformat) ;
+    av_register_input_format(&ogg_iformat);
+    return 0 ;
+}

libavformat/raw.c

@@ -0,0 +1,509 @@
+/* 
+ * RAW encoder and decoder
+ * Copyright (c) 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+/* simple formats */
+int raw_write_header(struct AVFormatContext *s)
+{
+    return 0;
+}
+
+int raw_write_packet(struct AVFormatContext *s, 
+                     int stream_index,
+                     unsigned char *buf, int size, int force_pts)
+{
+    put_buffer(&s->pb, buf, size);
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+int raw_write_trailer(struct AVFormatContext *s)
+{
+    return 0;
+}
+
+/* raw input */
+static int raw_read_header(AVFormatContext *s,
+                           AVFormatParameters *ap)
+{
+    AVStream *st;
+    int id;
+
+    st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR_NOMEM;
+    if (ap) {
+        id = s->iformat->value;
+        if (id == CODEC_ID_RAWVIDEO) {
+            st->codec.codec_type = CODEC_TYPE_VIDEO;
+        } else {
+            st->codec.codec_type = CODEC_TYPE_AUDIO;
+        }
+        st->codec.codec_id = id;
+
+        switch(st->codec.codec_type) {
+        case CODEC_TYPE_AUDIO:
+            st->codec.sample_rate = ap->sample_rate;
+            st->codec.channels = ap->channels;
+            break;
+        case CODEC_TYPE_VIDEO:
+            st->codec.frame_rate = ap->frame_rate;
+            st->codec.width = ap->width;
+            st->codec.height = ap->height;
+            break;
+        default:
+            return -1;
+        }
+    } else {
+        return -1;
+    }
+    return 0;
+}
+
+#define RAW_PACKET_SIZE 1024
+
+int raw_read_packet(AVFormatContext *s,
+                    AVPacket *pkt)
+{
+    int ret, size;
+    AVStream *st = s->streams[0];
+    
+    size= RAW_PACKET_SIZE;
+
+    if (av_new_packet(pkt, size) < 0)
+        return -EIO;
+
+    pkt->stream_index = 0;
+    ret = get_buffer(&s->pb, pkt->data, size);
+    if (ret <= 0) {
+        av_free_packet(pkt);
+        return -EIO;
+    }
+    /* note: we need to modify the packet size here to handle the last
+       packet */
+    pkt->size = ret;
+    return ret;
+}
+
+int raw_read_close(AVFormatContext *s)
+{
+    return 0;
+}
+
+/* mp3 read */
+static int mp3_read_header(AVFormatContext *s,
+                           AVFormatParameters *ap)
+{
+    AVStream *st;
+
+    st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR_NOMEM;
+
+    st->codec.codec_type = CODEC_TYPE_AUDIO;
+    st->codec.codec_id = CODEC_ID_MP2;
+    /* the parameters will be extracted from the compressed bitstream */
+    return 0;
+}
+
+/* mpeg1/h263 input */
+static int video_read_header(AVFormatContext *s,
+                             AVFormatParameters *ap)
+{
+    AVStream *st;
+
+    st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR_NOMEM;
+
+    st->codec.codec_type = CODEC_TYPE_VIDEO;
+    st->codec.codec_id = s->iformat->value;
+    /* for mjpeg, specify frame rate */
+    /* for mpeg4 specify it too (most mpeg4 streams dont have the fixed_vop_rate set ...)*/
+    if (st->codec.codec_id == CODEC_ID_MJPEG || st->codec.codec_id == CODEC_ID_MPEG4) {
+        if (ap) {
+            st->codec.frame_rate = ap->frame_rate;
+        } else {
+            st->codec.frame_rate = 25 * FRAME_RATE_BASE;
+        }
+    }
+    return 0;
+}
+
+#define SEQ_START_CODE		0x000001b3
+#define GOP_START_CODE		0x000001b8
+#define PICTURE_START_CODE	0x00000100
+
+/* XXX: improve that by looking at several start codes */
+static int mpegvideo_probe(AVProbeData *p)
+{
+    int code, c, i;
+    code = 0xff;
+
+    /* we search the first start code. If it is a sequence, gop or
+       picture start code then we decide it is an mpeg video
+       stream. We do not send highest value to give a chance to mpegts */
+    for(i=0;i<p->buf_size;i++) {
+        c = p->buf[i];
+        code = (code << 8) | c;
+        if ((code & 0xffffff00) == 0x100) {
+            if (code == SEQ_START_CODE ||
+                code == GOP_START_CODE ||
+                code == PICTURE_START_CODE)
+                return 50 - 1;
+            else
+                return 0;
+        }
+    }
+    return 0;
+}
+
+AVInputFormat mp3_iformat = {
+    "mp3",
+    "MPEG audio",
+    0,
+    NULL,
+    mp3_read_header,
+    raw_read_packet,
+    raw_read_close,
+    .extensions = "mp2,mp3", /* XXX: use probe */
+};
+
+AVOutputFormat mp2_oformat = {
+    "mp2",
+    "MPEG audio layer 2",
+    "audio/x-mpeg",
+    "mp2,mp3",
+    0,
+    CODEC_ID_MP2,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+};
+
+
+AVInputFormat ac3_iformat = {
+    "ac3",
+    "raw ac3",
+    0,
+    NULL,
+    raw_read_header,
+    raw_read_packet,
+    raw_read_close,
+    .extensions = "ac3",
+    .value = CODEC_ID_AC3,
+};
+
+AVOutputFormat ac3_oformat = {
+    "ac3",
+    "raw ac3",
+    "audio/x-ac3", 
+    "ac3",
+    0,
+    CODEC_ID_AC3,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+};
+
+AVOutputFormat h263_oformat = {
+    "h263",
+    "raw h263",
+    "video/x-h263",
+    "h263",
+    0,
+    0,
+    CODEC_ID_H263,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+};
+
+AVInputFormat m4v_iformat = {
+    "m4v",
+    "raw MPEG4 video format",
+    0,
+    NULL /*mpegvideo_probe*/,
+    video_read_header,
+    raw_read_packet,
+    raw_read_close,
+    .extensions = "m4v", //FIXME remove after writing mpeg4_probe
+    .value = CODEC_ID_MPEG4,
+};
+
+AVOutputFormat m4v_oformat = {
+    "m4v",
+    "raw MPEG4 video format",
+    NULL,
+    "m4v",
+    0,
+    CODEC_ID_NONE,
+    CODEC_ID_MPEG4,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+};
+
+AVInputFormat mpegvideo_iformat = {
+    "mpegvideo",
+    "MPEG video",
+    0,
+    mpegvideo_probe,
+    video_read_header,
+    raw_read_packet,
+    raw_read_close,
+    .value = CODEC_ID_MPEG1VIDEO,
+};
+
+AVOutputFormat mpeg1video_oformat = {
+    "mpeg1video",
+    "MPEG video",
+    "video/x-mpeg",
+    "mpg,mpeg",
+    0,
+    0,
+    CODEC_ID_MPEG1VIDEO,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+};
+
+AVInputFormat mjpeg_iformat = {
+    "mjpeg",
+    "MJPEG video",
+    0,
+    NULL,
+    video_read_header,
+    raw_read_packet,
+    raw_read_close,
+    .extensions = "mjpg,mjpeg",
+    .value = CODEC_ID_MJPEG,
+};
+
+AVOutputFormat mjpeg_oformat = {
+    "mjpeg",
+    "MJPEG video",
+    "video/x-mjpeg",
+    "mjpg,mjpeg",
+    0,
+    0,
+    CODEC_ID_MJPEG,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+};
+
+/* pcm formats */
+
+#define PCMDEF(name, long_name, ext, codec) \
+AVInputFormat pcm_ ## name ## _iformat = {\
+    #name,\
+    long_name,\
+    0,\
+    NULL,\
+    raw_read_header,\
+    raw_read_packet,\
+    raw_read_close,\
+    .extensions = ext,\
+    .value = codec,\
+};\
+\
+AVOutputFormat pcm_ ## name ## _oformat = {\
+    #name,\
+    long_name,\
+    NULL,\
+    ext,\
+    0,\
+    codec,\
+    0,\
+    raw_write_header,\
+    raw_write_packet,\
+    raw_write_trailer,\
+};
+
+#ifdef WORDS_BIGENDIAN
+#define BE_DEF(s) s
+#define LE_DEF(s) NULL
+#else
+#define BE_DEF(s) NULL
+#define LE_DEF(s) s
+#endif
+
+
+PCMDEF(s16le, "pcm signed 16 bit little endian format", 
+       LE_DEF("sw"), CODEC_ID_PCM_S16LE)
+
+PCMDEF(s16be, "pcm signed 16 bit big endian format", 
+       BE_DEF("sw"), CODEC_ID_PCM_S16BE)
+
+PCMDEF(u16le, "pcm unsigned 16 bit little endian format", 
+       LE_DEF("uw"), CODEC_ID_PCM_U16LE)
+
+PCMDEF(u16be, "pcm unsigned 16 bit big endian format", 
+       BE_DEF("uw"), CODEC_ID_PCM_U16BE)
+
+PCMDEF(s8, "pcm signed 8 bit format", 
+       "sb", CODEC_ID_PCM_S8)
+
+PCMDEF(u8, "pcm unsigned 8 bit format", 
+       "ub", CODEC_ID_PCM_U8)
+
+PCMDEF(mulaw, "pcm mu law format", 
+       "ul", CODEC_ID_PCM_MULAW)
+
+PCMDEF(alaw, "pcm A law format", 
+       "al", CODEC_ID_PCM_ALAW)
+
+int rawvideo_read_packet(AVFormatContext *s,
+                         AVPacket *pkt)
+{
+    int packet_size, ret, width, height;
+    AVStream *st = s->streams[0];
+
+    width = st->codec.width;
+    height = st->codec.height;
+
+    switch(st->codec.pix_fmt) {
+    case PIX_FMT_YUV420P:
+        packet_size = (width * height * 3) / 2;
+        break;
+    case PIX_FMT_YUV422:
+        packet_size = (width * height * 2);
+        break;
+    case PIX_FMT_BGR24:
+    case PIX_FMT_RGB24:
+        packet_size = (width * height * 3);
+        break;
+    default:
+        av_abort();
+        break;
+    }
+
+    if (av_new_packet(pkt, packet_size) < 0)
+        return -EIO;
+
+    pkt->stream_index = 0;
+#if 0
+    /* bypass buffered I/O */
+    ret = url_read(url_fileno(&s->pb), pkt->data, pkt->size);
+#else
+    ret = get_buffer(&s->pb, pkt->data, pkt->size);
+#endif
+    if (ret != pkt->size) {
+        av_free_packet(pkt);
+        return -EIO;
+    } else {
+        return 0;
+    }
+}
+
+AVInputFormat rawvideo_iformat = {
+    "rawvideo",
+    "raw video format",
+    0,
+    NULL,
+    raw_read_header,
+    rawvideo_read_packet,
+    raw_read_close,
+    .extensions = "yuv",
+    .value = CODEC_ID_RAWVIDEO,
+};
+
+AVOutputFormat rawvideo_oformat = {
+    "rawvideo",
+    "raw video format",
+    NULL,
+    "yuv",
+    0,
+    CODEC_ID_NONE,
+    CODEC_ID_RAWVIDEO,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+};
+
+static int null_write_packet(struct AVFormatContext *s, 
+                             int stream_index,
+                             unsigned char *buf, int size, int force_pts)
+{
+    return 0;
+}
+
+AVOutputFormat null_oformat = {
+    "null",
+    "null video format",
+    NULL,
+    NULL,
+    0,
+#ifdef WORDS_BIGENDIAN
+    CODEC_ID_PCM_S16BE,
+#else
+    CODEC_ID_PCM_S16LE,
+#endif
+    CODEC_ID_RAWVIDEO,
+    raw_write_header,
+    null_write_packet,
+    raw_write_trailer,
+    .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE,
+};
+
+int raw_init(void)
+{
+    av_register_input_format(&mp3_iformat);
+    av_register_output_format(&mp2_oformat);
+    
+    av_register_input_format(&ac3_iformat);
+    av_register_output_format(&ac3_oformat);
+
+    av_register_output_format(&h263_oformat);
+    
+    av_register_input_format(&m4v_iformat);
+    av_register_output_format(&m4v_oformat);
+
+    av_register_input_format(&mpegvideo_iformat);
+    av_register_output_format(&mpeg1video_oformat);
+
+    av_register_input_format(&mjpeg_iformat);
+    av_register_output_format(&mjpeg_oformat);
+
+    av_register_input_format(&pcm_s16le_iformat);
+    av_register_output_format(&pcm_s16le_oformat);
+    av_register_input_format(&pcm_s16be_iformat);
+    av_register_output_format(&pcm_s16be_oformat);
+    av_register_input_format(&pcm_u16le_iformat);
+    av_register_output_format(&pcm_u16le_oformat);
+    av_register_input_format(&pcm_u16be_iformat);
+    av_register_output_format(&pcm_u16be_oformat);
+    av_register_input_format(&pcm_s8_iformat);
+    av_register_output_format(&pcm_s8_oformat);
+    av_register_input_format(&pcm_u8_iformat);
+    av_register_output_format(&pcm_u8_oformat);
+    av_register_input_format(&pcm_mulaw_iformat);
+    av_register_output_format(&pcm_mulaw_oformat);
+    av_register_input_format(&pcm_alaw_iformat);
+    av_register_output_format(&pcm_alaw_oformat);
+
+    av_register_input_format(&rawvideo_iformat);
+    av_register_output_format(&rawvideo_oformat);
+
+    av_register_output_format(&null_oformat);
+    return 0;
+}

libavformat/rm.c

@@ -0,0 +1,773 @@
+/*
+ * "Real" compatible mux and demux.
+ * Copyright (c) 2000, 2001 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+/* in ms */
+#define BUFFER_DURATION 0 
+
+typedef struct {
+    int nb_packets;
+    int packet_total_size;
+    int packet_max_size;
+    /* codec related output */
+    int bit_rate;
+    float frame_rate;
+    int nb_frames;    /* current frame number */
+    int total_frames; /* total number of frames */
+    int num;
+    AVCodecContext *enc;
+} StreamInfo;
+
+typedef struct {
+    StreamInfo streams[2];
+    StreamInfo *audio_stream, *video_stream;
+    int data_pos; /* position of the data after the header */
+    int nb_packets;
+} RMContext;
+
+static void put_str(ByteIOContext *s, const char *tag)
+{
+    put_be16(s,strlen(tag));
+    while (*tag) {
+        put_byte(s, *tag++);
+    }
+}
+
+static void put_str8(ByteIOContext *s, const char *tag)
+{
+    put_byte(s, strlen(tag));
+    while (*tag) {
+        put_byte(s, *tag++);
+    }
+}
+
+static void rv10_write_header(AVFormatContext *ctx, 
+                              int data_size, int index_pos)
+{
+    RMContext *rm = ctx->priv_data;
+    ByteIOContext *s = &ctx->pb;
+    StreamInfo *stream;
+    unsigned char *data_offset_ptr, *start_ptr;
+    const char *desc, *mimetype;
+    int nb_packets, packet_total_size, packet_max_size, size, packet_avg_size, i;
+    int bit_rate, v, duration, flags, data_pos;
+
+    start_ptr = s->buf_ptr;
+
+    put_tag(s, ".RMF");
+    put_be32(s,18); /* header size */
+    put_be16(s,0);
+    put_be32(s,0);
+    put_be32(s,4 + ctx->nb_streams); /* num headers */
+
+    put_tag(s,"PROP");
+    put_be32(s, 50);
+    put_be16(s, 0);
+    packet_max_size = 0;
+    packet_total_size = 0;
+    nb_packets = 0;
+    bit_rate = 0;
+    duration = 0;
+    for(i=0;i<ctx->nb_streams;i++) {
+        StreamInfo *stream = &rm->streams[i];
+        bit_rate += stream->bit_rate;
+        if (stream->packet_max_size > packet_max_size)
+            packet_max_size = stream->packet_max_size;
+        nb_packets += stream->nb_packets;
+        packet_total_size += stream->packet_total_size;
+        /* select maximum duration */
+        v = (int) (1000.0 * (float)stream->total_frames / stream->frame_rate);
+        if (v > duration)
+            duration = v;
+    }
+    put_be32(s, bit_rate); /* max bit rate */
+    put_be32(s, bit_rate); /* avg bit rate */
+    put_be32(s, packet_max_size);        /* max packet size */
+    if (nb_packets > 0)
+        packet_avg_size = packet_total_size / nb_packets;
+    else
+        packet_avg_size = 0;
+    put_be32(s, packet_avg_size);        /* avg packet size */
+    put_be32(s, nb_packets);  /* num packets */
+    put_be32(s, duration); /* duration */
+    put_be32(s, BUFFER_DURATION);           /* preroll */
+    put_be32(s, index_pos);           /* index offset */
+    /* computation of data the data offset */
+    data_offset_ptr = s->buf_ptr;
+    put_be32(s, 0);           /* data offset : will be patched after */
+    put_be16(s, ctx->nb_streams);    /* num streams */
+    flags = 1 | 2; /* save allowed & perfect play */
+    if (url_is_streamed(s))
+        flags |= 4; /* live broadcast */
+    put_be16(s, flags);
+    
+    /* comments */
+
+    put_tag(s,"CONT");
+    size = strlen(ctx->title) + strlen(ctx->author) + strlen(ctx->copyright) + 
+        strlen(ctx->comment) + 4 * 2 + 10;
+    put_be32(s,size);
+    put_be16(s,0);
+    put_str(s, ctx->title);
+    put_str(s, ctx->author);
+    put_str(s, ctx->copyright);
+    put_str(s, ctx->comment);
+    
+    for(i=0;i<ctx->nb_streams;i++) {
+        int codec_data_size;
+
+        stream = &rm->streams[i];
+        
+        if (stream->enc->codec_type == CODEC_TYPE_AUDIO) {
+            desc = "The Audio Stream";
+            mimetype = "audio/x-pn-realaudio";
+            codec_data_size = 73;
+        } else {
+            desc = "The Video Stream";
+            mimetype = "video/x-pn-realvideo";
+            codec_data_size = 34;
+        }
+
+        put_tag(s,"MDPR");
+        size = 10 + 9 * 4 + strlen(desc) + strlen(mimetype) + codec_data_size;
+        put_be32(s, size);
+        put_be16(s, 0);
+
+        put_be16(s, i); /* stream number */
+        put_be32(s, stream->bit_rate); /* max bit rate */
+        put_be32(s, stream->bit_rate); /* avg bit rate */
+        put_be32(s, stream->packet_max_size);        /* max packet size */
+        if (stream->nb_packets > 0)
+            packet_avg_size = stream->packet_total_size / 
+                stream->nb_packets;
+        else
+            packet_avg_size = 0;
+        put_be32(s, packet_avg_size);        /* avg packet size */
+        put_be32(s, 0);           /* start time */
+        put_be32(s, BUFFER_DURATION);           /* preroll */
+        /* duration */
+        if (url_is_streamed(s) || !stream->total_frames)
+            put_be32(s, (int)(3600 * 1000));
+        else
+            put_be32(s, (int)(stream->total_frames * 1000 / stream->frame_rate));
+        put_str8(s, desc);
+        put_str8(s, mimetype);
+        put_be32(s, codec_data_size);
+        
+        if (stream->enc->codec_type == CODEC_TYPE_AUDIO) {
+            int coded_frame_size, fscode, sample_rate;
+            sample_rate = stream->enc->sample_rate;
+            coded_frame_size = (stream->enc->bit_rate * 
+                                stream->enc->frame_size) / (8 * sample_rate);
+            /* audio codec info */
+            put_tag(s, ".ra");
+            put_byte(s, 0xfd);
+            put_be32(s, 0x00040000); /* version */
+            put_tag(s, ".ra4");
+            put_be32(s, 0x01b53530); /* stream length */
+            put_be16(s, 4); /* unknown */
+            put_be32(s, 0x39); /* header size */
+
+            switch(sample_rate) {
+            case 48000:
+            case 24000:
+            case 12000:
+                fscode = 1;
+                break;
+            default:
+            case 44100:
+            case 22050:
+            case 11025:
+                fscode = 2;
+                break;
+            case 32000:
+            case 16000:
+            case 8000:
+                fscode = 3;
+            }
+            put_be16(s, fscode); /* codec additional info, for AC3, seems
+                                     to be a frequency code */
+            /* special hack to compensate rounding errors... */
+            if (coded_frame_size == 557)
+                coded_frame_size--;
+            put_be32(s, coded_frame_size); /* frame length */
+            put_be32(s, 0x51540); /* unknown */
+            put_be32(s, 0x249f0); /* unknown */
+            put_be32(s, 0x249f0); /* unknown */
+            put_be16(s, 0x01);
+            /* frame length : seems to be very important */
+            put_be16(s, coded_frame_size); 
+            put_be32(s, 0); /* unknown */
+            put_be16(s, stream->enc->sample_rate); /* sample rate */
+            put_be32(s, 0x10); /* unknown */
+            put_be16(s, stream->enc->channels);
+            put_str8(s, "Int0"); /* codec name */
+            put_str8(s, "dnet"); /* codec name */
+            put_be16(s, 0); /* title length */
+            put_be16(s, 0); /* author length */
+            put_be16(s, 0); /* copyright length */
+            put_byte(s, 0); /* end of header */
+        } else {
+            /* video codec info */
+            put_be32(s,34); /* size */
+            put_tag(s,"VIDORV10");
+            put_be16(s, stream->enc->width);
+            put_be16(s, stream->enc->height);
+            put_be16(s, (int) stream->frame_rate); /* frames per seconds ? */
+            put_be32(s,0);     /* unknown meaning */
+            put_be16(s, (int) stream->frame_rate);  /* unknown meaning */
+            put_be32(s,0);     /* unknown meaning */
+            put_be16(s, 8);    /* unknown meaning */
+            /* Seems to be the codec version: only use basic H263. The next
+               versions seems to add a diffential DC coding as in
+               MPEG... nothing new under the sun */
+            put_be32(s,0x10000000); 
+            //put_be32(s,0x10003000); 
+        }
+    }
+
+    /* patch data offset field */
+    data_pos = s->buf_ptr - start_ptr;
+    rm->data_pos = data_pos;
+    data_offset_ptr[0] = data_pos >> 24;
+    data_offset_ptr[1] = data_pos >> 16;
+    data_offset_ptr[2] = data_pos >> 8;
+    data_offset_ptr[3] = data_pos;
+    
+    /* data stream */
+    put_tag(s,"DATA");
+    put_be32(s,data_size + 10 + 8);
+    put_be16(s,0);
+
+    put_be32(s, nb_packets); /* number of packets */
+    put_be32(s,0); /* next data header */
+}
+
+static void write_packet_header(AVFormatContext *ctx, StreamInfo *stream, 
+                                int length, int key_frame)
+{
+    int timestamp;
+    ByteIOContext *s = &ctx->pb;
+
+    stream->nb_packets++;
+    stream->packet_total_size += length;
+    if (length > stream->packet_max_size)
+        stream->packet_max_size =  length;
+
+    put_be16(s,0); /* version */
+    put_be16(s,length + 12);
+    put_be16(s, stream->num); /* stream number */
+    timestamp = (1000 * (float)stream->nb_frames) / stream->frame_rate;
+    put_be32(s, timestamp); /* timestamp */
+    put_byte(s, 0); /* reserved */
+    put_byte(s, key_frame ? 2 : 0); /* flags */
+}
+
+static int rm_write_header(AVFormatContext *s)
+{
+    RMContext *rm = s->priv_data;
+    StreamInfo *stream;
+    int n;
+    AVCodecContext *codec;
+
+    for(n=0;n<s->nb_streams;n++) {
+        s->streams[n]->id = n;
+        codec = &s->streams[n]->codec;
+        stream = &rm->streams[n];
+        memset(stream, 0, sizeof(StreamInfo));
+        stream->num = n;
+        stream->bit_rate = codec->bit_rate;
+        stream->enc = codec;
+
+        switch(codec->codec_type) {
+        case CODEC_TYPE_AUDIO:
+            rm->audio_stream = stream;
+            stream->frame_rate = (float)codec->sample_rate / (float)codec->frame_size;
+            /* XXX: dummy values */
+            stream->packet_max_size = 1024;
+            stream->nb_packets = 0;
+            stream->total_frames = stream->nb_packets;
+            break;
+        case CODEC_TYPE_VIDEO:
+            rm->video_stream = stream;
+            stream->frame_rate = (float)codec->frame_rate / (float)FRAME_RATE_BASE;
+            /* XXX: dummy values */
+            stream->packet_max_size = 4096;
+            stream->nb_packets = 0;
+            stream->total_frames = stream->nb_packets;
+            break;
+        default:
+            av_abort();
+        }
+    }
+
+    rv10_write_header(s, 0, 0);
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static int rm_write_audio(AVFormatContext *s, UINT8 *buf, int size)
+{
+    UINT8 *buf1;
+    RMContext *rm = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    StreamInfo *stream = rm->audio_stream;
+    int i;
+
+    /* XXX: suppress this malloc */
+    buf1= (UINT8*) av_malloc( size * sizeof(UINT8) );
+    
+    write_packet_header(s, stream, size, stream->enc->key_frame);
+    
+    /* for AC3, the words seems to be reversed */
+    for(i=0;i<size;i+=2) {
+        buf1[i] = buf[i+1];
+        buf1[i+1] = buf[i];
+    }
+    put_buffer(pb, buf1, size);
+    put_flush_packet(pb);
+    stream->nb_frames++;
+    av_free(buf1);
+    return 0;
+}
+
+static int rm_write_video(AVFormatContext *s, UINT8 *buf, int size)
+{
+    RMContext *rm = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    StreamInfo *stream = rm->video_stream;
+    int key_frame = stream->enc->key_frame;
+
+    /* XXX: this is incorrect: should be a parameter */
+
+    /* Well, I spent some time finding the meaning of these bits. I am
+       not sure I understood everything, but it works !! */
+#if 1
+    write_packet_header(s, stream, size + 7, key_frame);
+    /* bit 7: '1' if final packet of a frame converted in several packets */
+    put_byte(pb, 0x81); 
+    /* bit 7: '1' if I frame. bits 6..0 : sequence number in current
+       frame starting from 1 */
+    if (key_frame) {
+        put_byte(pb, 0x81); 
+    } else {
+        put_byte(pb, 0x01); 
+    }
+    put_be16(pb, 0x4000 | (size)); /* total frame size */
+    put_be16(pb, 0x4000 | (size));              /* offset from the start or the end */
+#else
+    /* full frame */
+    write_packet_header(s, size + 6);
+    put_byte(pb, 0xc0); 
+    put_be16(pb, 0x4000 | size); /* total frame size */
+    put_be16(pb, 0x4000 + packet_number * 126); /* position in stream */
+#endif
+    put_byte(pb, stream->nb_frames & 0xff); 
+    
+    put_buffer(pb, buf, size);
+    put_flush_packet(pb);
+
+    stream->nb_frames++;
+    return 0;
+}
+
+static int rm_write_packet(AVFormatContext *s, int stream_index, 
+                           UINT8 *buf, int size, int force_pts)
+{
+    if (s->streams[stream_index]->codec.codec_type == 
+        CODEC_TYPE_AUDIO)
+        return rm_write_audio(s, buf, size);
+    else
+        return rm_write_video(s, buf, size);
+}
+        
+static int rm_write_trailer(AVFormatContext *s)
+{
+    RMContext *rm = s->priv_data;
+    int data_size, index_pos, i;
+    ByteIOContext *pb = &s->pb;
+
+    if (!url_is_streamed(&s->pb)) {
+        /* end of file: finish to write header */
+        index_pos = url_fseek(pb, 0, SEEK_CUR);
+        data_size = index_pos - rm->data_pos;
+
+        /* index */
+        put_tag(pb, "INDX");
+        put_be32(pb, 10 + 10 * s->nb_streams);
+        put_be16(pb, 0);
+        
+        for(i=0;i<s->nb_streams;i++) {
+            put_be32(pb, 0); /* zero indices */
+            put_be16(pb, i); /* stream number */
+            put_be32(pb, 0); /* next index */
+        }
+        /* undocumented end header */
+        put_be32(pb, 0);
+        put_be32(pb, 0);
+        
+        url_fseek(pb, 0, SEEK_SET);
+        for(i=0;i<s->nb_streams;i++)
+            rm->streams[i].total_frames = rm->streams[i].nb_frames;
+        rv10_write_header(s, data_size, index_pos);
+    } else {
+        /* undocumented end header */
+        put_be32(pb, 0);
+        put_be32(pb, 0);
+    }
+    put_flush_packet(pb);
+    return 0;
+}
+
+/***************************************************/
+
+static void get_str(ByteIOContext *pb, char *buf, int buf_size)
+{
+    int len, i;
+    char *q;
+
+    len = get_be16(pb);
+    q = buf;
+    for(i=0;i<len;i++) {
+        if (i < buf_size - 1)
+            *q++ = get_byte(pb);
+    }
+    *q = '\0';
+}
+
+static void get_str8(ByteIOContext *pb, char *buf, int buf_size)
+{
+    int len, i;
+    char *q;
+
+    len = get_byte(pb);
+    q = buf;
+    for(i=0;i<len;i++) {
+        if (i < buf_size - 1)
+            *q++ = get_byte(pb);
+    }
+    *q = '\0';
+}
+
+static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+    RMContext *rm = s->priv_data;
+    AVStream *st;
+    ByteIOContext *pb = &s->pb;
+    unsigned int tag, v;
+    int tag_size, size, codec_data_size, i;
+    INT64 codec_pos;
+    unsigned int h263_hack_version;
+    char buf[128];
+    int flags = 0;
+
+    if (get_le32(pb) != MKTAG('.', 'R', 'M', 'F'))
+        return -EIO;
+
+    get_be32(pb); /* header size */
+    get_be16(pb);
+    get_be32(pb);
+    get_be32(pb); /* number of headers */
+    
+    for(;;) {
+        if (url_feof(pb))
+            goto fail;
+        tag = get_le32(pb);
+        tag_size = get_be32(pb);
+        get_be16(pb);
+#if 0
+        printf("tag=%c%c%c%c (%08x) size=%d\n", 
+               (tag) & 0xff,
+               (tag >> 8) & 0xff,
+               (tag >> 16) & 0xff,
+               (tag >> 24) & 0xff,
+               tag,
+               tag_size);
+#endif
+        if (tag_size < 10)
+            goto fail;
+        switch(tag) {
+        case MKTAG('P', 'R', 'O', 'P'):
+            /* file header */
+            get_be32(pb); /* max bit rate */
+            get_be32(pb); /* avg bit rate */
+            get_be32(pb); /* max packet size */
+            get_be32(pb); /* avg packet size */
+            get_be32(pb); /* nb packets */
+            get_be32(pb); /* duration */
+            get_be32(pb); /* preroll */
+            get_be32(pb); /* index offset */
+            get_be32(pb); /* data offset */
+            get_be16(pb); /* nb streams */
+            flags = get_be16(pb); /* flags */
+            break;
+        case MKTAG('C', 'O', 'N', 'T'):
+            get_str(pb, s->title, sizeof(s->title));
+            get_str(pb, s->author, sizeof(s->author));
+            get_str(pb, s->copyright, sizeof(s->copyright));
+            get_str(pb, s->comment, sizeof(s->comment));
+            break;
+        case MKTAG('M', 'D', 'P', 'R'):
+            st = av_mallocz(sizeof(AVStream));
+            if (!st)
+                goto fail;
+            s->streams[s->nb_streams++] = st;
+            st->id = get_be16(pb);
+            get_be32(pb); /* max bit rate */
+            st->codec.bit_rate = get_be32(pb); /* bit rate */
+            get_be32(pb); /* max packet size */
+            get_be32(pb); /* avg packet size */
+            get_be32(pb); /* start time */
+            get_be32(pb); /* preroll */
+            get_be32(pb); /* duration */
+            get_str8(pb, buf, sizeof(buf)); /* desc */
+            get_str8(pb, buf, sizeof(buf)); /* mimetype */
+            codec_data_size = get_be32(pb);
+            codec_pos = url_ftell(pb);
+
+            v = get_be32(pb);
+            if (v == MKTAG(0xfd, 'a', 'r', '.')) {
+                /* ra type header */
+                get_be32(pb); /* version */
+                get_be32(pb); /* .ra4 */
+                get_be32(pb);
+                get_be16(pb);
+                get_be32(pb); /* header size */
+                get_be16(pb); /* add codec info */
+                get_be32(pb); /* coded frame size */
+                get_be32(pb); /* ??? */
+                get_be32(pb); /* ??? */
+                get_be32(pb); /* ??? */
+                get_be16(pb); /* 1 */ 
+                get_be16(pb); /* coded frame size */
+                get_be32(pb);
+                st->codec.sample_rate = get_be16(pb);
+                get_be32(pb);
+                st->codec.channels = get_be16(pb);
+                get_str8(pb, buf, sizeof(buf)); /* desc */
+                get_str8(pb, buf, sizeof(buf)); /* desc */
+                st->codec.codec_type = CODEC_TYPE_AUDIO;
+                if (!strcmp(buf, "dnet")) {
+                    st->codec.codec_id = CODEC_ID_AC3;
+                } else {
+                    st->codec.codec_id = CODEC_ID_NONE;
+                    pstrcpy(st->codec.codec_name, sizeof(st->codec.codec_name),
+                            buf);
+                }
+            } else {
+                if (get_le32(pb) != MKTAG('V', 'I', 'D', 'O')) {
+                fail1:
+                    fprintf(stderr, "Unsupported video codec\n");
+                    goto fail;
+                }
+                st->codec.codec_tag = get_le32(pb);
+                if (st->codec.codec_tag != MKTAG('R', 'V', '1', '0'))
+                    goto fail1;
+                st->codec.width = get_be16(pb);
+                st->codec.height = get_be16(pb);
+                st->codec.frame_rate = get_be16(pb) * FRAME_RATE_BASE;
+                st->codec.codec_type = CODEC_TYPE_VIDEO;
+                get_be32(pb);
+                get_be16(pb);
+                get_be32(pb);
+                get_be16(pb);
+                /* modification of h263 codec version (!) */
+                h263_hack_version = get_be32(pb);
+                switch(h263_hack_version) {
+                case 0x10000000:
+                case 0x10003000:
+                case 0x10003001:
+                    st->codec.sub_id = h263_hack_version;
+                    st->codec.codec_id = CODEC_ID_RV10;
+                    break;
+                default:
+                    /* not handled */
+                    st->codec.codec_id = CODEC_ID_NONE;
+                    break;
+                }
+            }
+            /* skip codec info */
+            size = url_ftell(pb) - codec_pos;
+            url_fskip(pb, codec_data_size - size);
+            break;
+        case MKTAG('D', 'A', 'T', 'A'):
+            goto header_end;
+        default:
+            /* unknown tag: skip it */
+            url_fskip(pb, tag_size - 10);
+            break;
+        }
+    }
+ header_end:
+    rm->nb_packets = get_be32(pb); /* number of packets */
+    if (!rm->nb_packets && (flags & 4))
+        rm->nb_packets = 3600 * 25;
+    get_be32(pb); /* next data header */
+    return 0;
+
+ fail:
+    for(i=0;i<s->nb_streams;i++) {
+        av_free(s->streams[i]);
+    }
+    return -EIO;
+}
+
+static int get_num(ByteIOContext *pb, int *len)
+{
+    int n, n1;
+
+    n = get_be16(pb);
+    (*len)-=2;
+    if (n >= 0x4000) {
+        return n - 0x4000;
+    } else {
+        n1 = get_be16(pb);
+        (*len)-=2;
+        return (n << 16) | n1;
+    }
+}
+
+static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    RMContext *rm = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    AVStream *st;
+    int len, num, timestamp, i, tmp, j;
+    UINT8 *ptr;
+    int flags;
+
+ redo:
+    if (rm->nb_packets == 0)
+        return -EIO;
+    get_be16(pb);
+    len = get_be16(pb);
+    if (len < 12)
+        return -EIO;
+    num = get_be16(pb);
+    timestamp = get_be32(pb);
+    get_byte(pb); /* reserved */
+    flags = get_byte(pb); /* flags */
+    rm->nb_packets--;
+    len -= 12;
+
+    st = NULL;
+    for(i=0;i<s->nb_streams;i++) {
+        st = s->streams[i];
+        if (num == st->id)
+            break;
+    }
+    if (i == s->nb_streams) {
+        /* skip packet if unknown number */
+        url_fskip(pb, len);
+        goto redo;
+    }
+
+    if (st->codec.codec_type == CODEC_TYPE_VIDEO) {
+        int full_frame, h, pic_num;
+ 
+        h= get_byte(pb);
+        if ((h & 0xc0) == 0xc0) {
+            int len2, pos;
+            full_frame = 1;
+            len2= get_num(pb, &len);
+            pos = get_num(pb, &len);
+            //printf("pos:%d\n",len);
+            len -= 2;
+        } else {
+            int seq, frame_size, pos;
+            full_frame = 0;
+            seq = get_byte(pb);
+            frame_size = get_num(pb, &len);
+            pos = get_num(pb, &len);
+            //printf("seq:%d, size:%d, pos:%d\n",seq,frame_size,pos);
+            len -= 3;
+        }
+        /* picture number */
+        pic_num= get_byte(pb);
+
+        //XXX/FIXME/HACK, demuxer should be fixed to send complete frames ...
+        if(st->codec.slice_offset==NULL) st->codec.slice_offset= (int*)malloc(sizeof(int));
+        st->codec.slice_count= full_frame; 
+        st->codec.slice_offset[0]= 0;
+    }
+
+    av_new_packet(pkt, len);
+    pkt->stream_index = i;
+    get_buffer(pb, pkt->data, len);
+
+    /* for AC3, needs to swap bytes */
+    if (st->codec.codec_id == CODEC_ID_AC3) {
+        ptr = pkt->data;
+        for(j=0;j<len;j+=2) {
+            tmp = ptr[0];
+            ptr[0] = ptr[1];
+            ptr[1] = tmp;
+                ptr += 2;
+        }
+    }
+    return 0;
+}
+
+static int rm_read_close(AVFormatContext *s)
+{
+    return 0;
+}
+
+static int rm_probe(AVProbeData *p)
+{
+    /* check file header */
+    if (p->buf_size <= 32)
+        return 0;
+    if (p->buf[0] == '.' && p->buf[1] == 'R' &&
+        p->buf[2] == 'M' && p->buf[3] == 'F' &&
+        p->buf[4] == 0 && p->buf[5] == 0)
+        return AVPROBE_SCORE_MAX;
+    else
+        return 0;
+}
+
+static AVInputFormat rm_iformat = {
+    "rm",
+    "rm format",
+    sizeof(RMContext),
+    rm_probe,
+    rm_read_header,
+    rm_read_packet,
+    rm_read_close,
+};
+
+static AVOutputFormat rm_oformat = {
+    "rm",
+    "rm format",
+    "audio/x-pn-realaudio",
+    "rm,ra",
+    sizeof(RMContext),
+    CODEC_ID_AC3,
+    CODEC_ID_RV10,
+    rm_write_header,
+    rm_write_packet,
+    rm_write_trailer,
+};
+
+int rm_init(void)
+{
+    av_register_input_format(&rm_iformat);
+    av_register_output_format(&rm_oformat);
+    return 0;
+}

libavformat/rtp.c

@@ -0,0 +1,687 @@
+/*
+ * RTP input/output format
+ * Copyright (c) 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifndef __BEOS__
+# include <arpa/inet.h>
+#else
+# include "barpainet.h"
+#endif
+#include <netdb.h>
+
+//#define DEBUG
+
+
+/* TODO: - add RTCP statistics reporting (should be optional).
+
+         - add support for h263/mpeg4 packetized output : IDEA: send a
+         buffer to 'rtp_write_packet' contains all the packets for ONE
+         frame. Each packet should have a four byte header containing
+         the length in big endian format (same trick as
+         'url_open_dyn_packet_buf') 
+*/
+
+#define RTP_VERSION 2
+
+#define RTP_MAX_SDES 256   /* maximum text length for SDES */
+
+/* RTCP paquets use 0.5 % of the bandwidth */
+#define RTCP_TX_RATIO_NUM 5
+#define RTCP_TX_RATIO_DEN 1000
+
+typedef enum {
+  RTCP_SR   = 200,
+  RTCP_RR   = 201,
+  RTCP_SDES = 202,
+  RTCP_BYE  = 203,
+  RTCP_APP  = 204
+} rtcp_type_t;
+
+typedef enum {
+  RTCP_SDES_END    =  0,
+  RTCP_SDES_CNAME  =  1,
+  RTCP_SDES_NAME   =  2,
+  RTCP_SDES_EMAIL  =  3,
+  RTCP_SDES_PHONE  =  4,
+  RTCP_SDES_LOC    =  5,
+  RTCP_SDES_TOOL   =  6,
+  RTCP_SDES_NOTE   =  7,
+  RTCP_SDES_PRIV   =  8, 
+  RTCP_SDES_IMG    =  9,
+  RTCP_SDES_DOOR   = 10,
+  RTCP_SDES_SOURCE = 11
+} rtcp_sdes_type_t;
+
+enum RTPPayloadType {
+    RTP_PT_ULAW = 0,
+    RTP_PT_GSM = 3,
+    RTP_PT_G723 = 4,
+    RTP_PT_ALAW = 8,
+    RTP_PT_S16BE_STEREO = 10,
+    RTP_PT_S16BE_MONO = 11,
+    RTP_PT_MPEGAUDIO = 14,
+    RTP_PT_JPEG = 26,
+    RTP_PT_H261 = 31,
+    RTP_PT_MPEGVIDEO = 32,
+    RTP_PT_MPEG2TS = 33,
+    RTP_PT_H263 = 34, /* old H263 encapsulation */
+    RTP_PT_PRIVATE = 96,
+};
+
+typedef struct RTPContext {
+    int payload_type;
+    UINT32 ssrc;
+    UINT16 seq;
+    UINT32 timestamp;
+    UINT32 base_timestamp;
+    UINT32 cur_timestamp;
+    int max_payload_size;
+    /* rtcp sender statistics receive */
+    INT64 last_rtcp_ntp_time;
+    UINT32 last_rtcp_timestamp;
+    /* rtcp sender statistics */
+    unsigned int packet_count;
+    unsigned int octet_count;
+    unsigned int last_octet_count;
+    int first_packet;
+    /* buffer for output */
+    UINT8 buf[RTP_MAX_PACKET_LENGTH];
+    UINT8 *buf_ptr;
+} RTPContext;
+
+int rtp_get_codec_info(AVCodecContext *codec, int payload_type)
+{
+    switch(payload_type) {
+    case RTP_PT_ULAW:
+        codec->codec_id = CODEC_ID_PCM_MULAW;
+        codec->channels = 1;
+        codec->sample_rate = 8000;
+        break;
+    case RTP_PT_ALAW:
+        codec->codec_id = CODEC_ID_PCM_ALAW;
+        codec->channels = 1;
+        codec->sample_rate = 8000;
+        break;
+    case RTP_PT_S16BE_STEREO:
+        codec->codec_id = CODEC_ID_PCM_S16BE;
+        codec->channels = 2;
+        codec->sample_rate = 44100;
+        break;
+    case RTP_PT_S16BE_MONO:
+        codec->codec_id = CODEC_ID_PCM_S16BE;
+        codec->channels = 1;
+        codec->sample_rate = 44100;
+        break;
+    case RTP_PT_MPEGAUDIO:
+        codec->codec_id = CODEC_ID_MP2;
+        break;
+    case RTP_PT_JPEG:
+        codec->codec_id = CODEC_ID_MJPEG;
+        break;
+    case RTP_PT_MPEGVIDEO:
+        codec->codec_id = CODEC_ID_MPEG1VIDEO;
+        break;
+    default:
+        return -1;
+    }
+    return 0;
+}
+
+/* return < 0 if unknown payload type */
+int rtp_get_payload_type(AVCodecContext *codec)
+{
+    int payload_type;
+
+    /* compute the payload type */
+    payload_type = -1;
+    switch(codec->codec_id) {
+    case CODEC_ID_PCM_MULAW:
+        payload_type = RTP_PT_ULAW;
+        break;
+    case CODEC_ID_PCM_ALAW:
+        payload_type = RTP_PT_ALAW;
+        break;
+    case CODEC_ID_PCM_S16BE:
+        if (codec->channels == 1) {
+            payload_type = RTP_PT_S16BE_MONO;
+        } else if (codec->channels == 2) {
+            payload_type = RTP_PT_S16BE_STEREO;
+        }
+        break;
+    case CODEC_ID_MP2:
+    case CODEC_ID_MP3LAME:
+        payload_type = RTP_PT_MPEGAUDIO;
+        break;
+    case CODEC_ID_MJPEG:
+        payload_type = RTP_PT_JPEG;
+        break;
+    case CODEC_ID_MPEG1VIDEO:
+        payload_type = RTP_PT_MPEGVIDEO;
+        break;
+    default:
+        break;
+    }
+    return payload_type;
+}
+
+static inline UINT32 decode_be32(const UINT8 *p)
+{
+    return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
+}
+
+static inline UINT32 decode_be64(const UINT8 *p)
+{
+    return ((UINT64)decode_be32(p) << 32) | decode_be32(p + 4);
+}
+
+static int rtcp_parse_packet(AVFormatContext *s1, const unsigned char *buf, int len)
+{
+    RTPContext *s = s1->priv_data;
+
+    if (buf[1] != 200)
+        return -1;
+    s->last_rtcp_ntp_time = decode_be64(buf + 8);
+    s->last_rtcp_timestamp = decode_be32(buf + 16);
+    return 0;
+}
+
+/**
+ * Parse an RTP packet directly sent as raw data. Can only be used if
+ * 'raw' is given as input file
+ * @param s1 media file context
+ * @param pkt returned packet
+ * @param buf input buffer
+ * @param len buffer len
+ * @return zero if no error.
+ */
+int rtp_parse_packet(AVFormatContext *s1, AVPacket *pkt, 
+                     const unsigned char *buf, int len)
+{
+    RTPContext *s = s1->priv_data;
+    unsigned int ssrc, h;
+    int payload_type, seq, delta_timestamp;
+    AVStream *st;
+    UINT32 timestamp;
+    
+    if (len < 12)
+        return -1;
+
+    if ((buf[0] & 0xc0) != (RTP_VERSION << 6))
+        return -1;
+    if (buf[1] >= 200 && buf[1] <= 204) {
+        rtcp_parse_packet(s1, buf, len);
+        return -1;
+    }
+    payload_type = buf[1] & 0x7f;
+    seq  = (buf[2] << 8) | buf[3];
+    timestamp = decode_be32(buf + 4);
+    ssrc = decode_be32(buf + 8);
+    
+    if (s->payload_type < 0) {
+        s->payload_type = payload_type;
+        
+        if (payload_type == RTP_PT_MPEG2TS) {
+            /* XXX: special case : not a single codec but a whole stream */
+            return -1;
+        } else {
+            st = av_new_stream(s1, 0);
+            if (!st)
+                return -1;
+            rtp_get_codec_info(&st->codec, payload_type);
+        }
+    }
+
+    /* NOTE: we can handle only one payload type */
+    if (s->payload_type != payload_type)
+        return -1;
+#if defined(DEBUG) || 1
+    if (seq != ((s->seq + 1) & 0xffff)) {
+        printf("RTP: PT=%02x: bad cseq %04x expected=%04x\n", 
+               payload_type, seq, ((s->seq + 1) & 0xffff));
+    }
+    s->seq = seq;
+#endif
+    len -= 12;
+    buf += 12;
+    st = s1->streams[0];
+    switch(st->codec.codec_id) {
+    case CODEC_ID_MP2:
+        /* better than nothing: skip mpeg audio RTP header */
+        if (len <= 4)
+            return -1;
+        h = decode_be32(buf);
+        len -= 4;
+        buf += 4;
+        av_new_packet(pkt, len);
+        memcpy(pkt->data, buf, len);
+        break;
+    case CODEC_ID_MPEG1VIDEO:
+        /* better than nothing: skip mpeg audio RTP header */
+        if (len <= 4)
+            return -1;
+        h = decode_be32(buf);
+        buf += 4;
+        len -= 4;
+        if (h & (1 << 26)) {
+            /* mpeg2 */
+            if (len <= 4)
+                return -1;
+            buf += 4;
+            len -= 4;
+        }
+        av_new_packet(pkt, len);
+        memcpy(pkt->data, buf, len);
+        break;
+    default:
+        av_new_packet(pkt, len);
+        memcpy(pkt->data, buf, len);
+        break;
+    }
+
+    if (s->last_rtcp_ntp_time != AV_NOPTS_VALUE) {
+        /* compute pts from timestamp with received ntp_time */
+        delta_timestamp = timestamp - s->last_rtcp_timestamp;
+        /* XXX: do conversion, but not needed for mpeg at 90 KhZ */
+        pkt->pts = s->last_rtcp_ntp_time + delta_timestamp;
+    }
+    return 0;
+}
+
+static int rtp_read_header(AVFormatContext *s1,
+                           AVFormatParameters *ap)
+{
+    RTPContext *s = s1->priv_data;
+    s->payload_type = -1;
+    s->last_rtcp_ntp_time = AV_NOPTS_VALUE;
+    return 0;
+}
+
+static int rtp_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    char buf[RTP_MAX_PACKET_LENGTH];
+    int ret;
+
+    /* XXX: needs a better API for packet handling ? */
+    for(;;) {
+        ret = url_read(url_fileno(&s1->pb), buf, sizeof(buf));
+        if (ret < 0)
+            return AVERROR_IO;
+        if (rtp_parse_packet(s1, pkt, buf, ret) == 0)
+            break;
+    }
+    return 0;
+}
+
+static int rtp_read_close(AVFormatContext *s1)
+{
+    //    RTPContext *s = s1->priv_data;
+    return 0;
+}
+
+static int rtp_probe(AVProbeData *p)
+{
+    if (strstart(p->filename, "rtp://", NULL))
+        return AVPROBE_SCORE_MAX;
+    return 0;
+}
+
+/* rtp output */
+
+static int rtp_write_header(AVFormatContext *s1)
+{
+    RTPContext *s = s1->priv_data;
+    int payload_type, max_packet_size;
+    AVStream *st;
+
+    if (s1->nb_streams != 1)
+        return -1;
+    st = s1->streams[0];
+
+    payload_type = rtp_get_payload_type(&st->codec);
+    if (payload_type < 0)
+        payload_type = RTP_PT_PRIVATE; /* private payload type */
+    s->payload_type = payload_type;
+
+    s->base_timestamp = random();
+    s->timestamp = s->base_timestamp;
+    s->ssrc = random();
+    s->first_packet = 1;
+
+    max_packet_size = url_fget_max_packet_size(&s1->pb);
+    if (max_packet_size <= 12)
+        return AVERROR_IO;
+    s->max_payload_size = max_packet_size - 12;
+
+    switch(st->codec.codec_id) {
+    case CODEC_ID_MP2:
+    case CODEC_ID_MP3LAME:
+        s->buf_ptr = s->buf + 4;
+        s->cur_timestamp = 0;
+        break;
+    case CODEC_ID_MPEG1VIDEO:
+        s->cur_timestamp = 0;
+        break;
+    default:
+        s->buf_ptr = s->buf;
+        break;
+    }
+
+    return 0;
+}
+
+/* send an rtcp sender report packet */
+static void rtcp_send_sr(AVFormatContext *s1, INT64 ntp_time)
+{
+    RTPContext *s = s1->priv_data;
+#if defined(DEBUG)
+    printf("RTCP: %02x %Lx %x\n", s->payload_type, ntp_time, s->timestamp);
+#endif
+    put_byte(&s1->pb, (RTP_VERSION << 6));
+    put_byte(&s1->pb, 200);
+    put_be16(&s1->pb, 6); /* length in words - 1 */
+    put_be32(&s1->pb, s->ssrc);
+    put_be64(&s1->pb, ntp_time);
+    put_be32(&s1->pb, s->timestamp);
+    put_be32(&s1->pb, s->packet_count);
+    put_be32(&s1->pb, s->octet_count);
+    put_flush_packet(&s1->pb);
+}
+
+/* send an rtp packet. sequence number is incremented, but the caller
+   must update the timestamp itself */
+static void rtp_send_data(AVFormatContext *s1, UINT8 *buf1, int len)
+{
+    RTPContext *s = s1->priv_data;
+
+#ifdef DEBUG
+    printf("rtp_send_data size=%d\n", len);
+#endif
+
+    /* build the RTP header */
+    put_byte(&s1->pb, (RTP_VERSION << 6));
+    put_byte(&s1->pb, s->payload_type & 0x7f);
+    put_be16(&s1->pb, s->seq);
+    put_be32(&s1->pb, s->timestamp);
+    put_be32(&s1->pb, s->ssrc);
+    
+    put_buffer(&s1->pb, buf1, len);
+    put_flush_packet(&s1->pb);
+    
+    s->seq++;
+    s->octet_count += len;
+    s->packet_count++;
+}
+
+/* send an integer number of samples and compute time stamp and fill
+   the rtp send buffer before sending. */
+static void rtp_send_samples(AVFormatContext *s1,
+                             UINT8 *buf1, int size, int sample_size)
+{
+    RTPContext *s = s1->priv_data;
+    int len, max_packet_size, n;
+
+    max_packet_size = (s->max_payload_size / sample_size) * sample_size;
+    /* not needed, but who nows */
+    if ((size % sample_size) != 0)
+        av_abort();
+    while (size > 0) {
+        len = (max_packet_size - (s->buf_ptr - s->buf));
+        if (len > size)
+            len = size;
+
+        /* copy data */
+        memcpy(s->buf_ptr, buf1, len);
+        s->buf_ptr += len;
+        buf1 += len;
+        size -= len;
+        n = (s->buf_ptr - s->buf);
+        /* if buffer full, then send it */
+        if (n >= max_packet_size) {
+            rtp_send_data(s1, s->buf, n);
+            s->buf_ptr = s->buf;
+            /* update timestamp */
+            s->timestamp += n / sample_size;
+        }
+    }
+} 
+
+/* NOTE: we suppose that exactly one frame is given as argument here */
+/* XXX: test it */
+static void rtp_send_mpegaudio(AVFormatContext *s1,
+                               UINT8 *buf1, int size)
+{
+    RTPContext *s = s1->priv_data;
+    AVStream *st = s1->streams[0];
+    int len, count, max_packet_size;
+
+    max_packet_size = s->max_payload_size;
+
+    /* test if we must flush because not enough space */
+    len = (s->buf_ptr - s->buf);
+    if ((len + size) > max_packet_size) {
+        if (len > 4) {
+            rtp_send_data(s1, s->buf, s->buf_ptr - s->buf);
+            s->buf_ptr = s->buf + 4;
+            /* 90 KHz time stamp */
+            s->timestamp = s->base_timestamp + 
+                (s->cur_timestamp * 90000LL) / st->codec.sample_rate;
+        }
+    }
+
+    /* add the packet */
+    if (size > max_packet_size) {
+        /* big packet: fragment */
+        count = 0;
+        while (size > 0) {
+            len = max_packet_size - 4;
+            if (len > size)
+                len = size;
+            /* build fragmented packet */
+            s->buf[0] = 0;
+            s->buf[1] = 0;
+            s->buf[2] = count >> 8;
+            s->buf[3] = count;
+            memcpy(s->buf + 4, buf1, len);
+            rtp_send_data(s1, s->buf, len + 4);
+            size -= len;
+            buf1 += len;
+            count += len;
+        }
+    } else {
+        if (s->buf_ptr == s->buf + 4) {
+            /* no fragmentation possible */
+            s->buf[0] = 0;
+            s->buf[1] = 0;
+            s->buf[2] = 0;
+            s->buf[3] = 0;
+        }
+        memcpy(s->buf_ptr, buf1, size);
+        s->buf_ptr += size;
+    }
+    s->cur_timestamp += st->codec.frame_size;
+}
+
+/* NOTE: a single frame must be passed with sequence header if
+   needed. XXX: use slices. */
+static void rtp_send_mpegvideo(AVFormatContext *s1,
+                               UINT8 *buf1, int size)
+{
+    RTPContext *s = s1->priv_data;
+    AVStream *st = s1->streams[0];
+    int len, h, max_packet_size;
+    UINT8 *q;
+
+    max_packet_size = s->max_payload_size;
+
+    while (size > 0) {
+        /* XXX: more correct headers */
+        h = 0;
+        if (st->codec.sub_id == 2)
+            h |= 1 << 26; /* mpeg 2 indicator */
+        q = s->buf;
+        *q++ = h >> 24;
+        *q++ = h >> 16;
+        *q++ = h >> 8;
+        *q++ = h;
+
+        if (st->codec.sub_id == 2) {
+            h = 0;
+            *q++ = h >> 24;
+            *q++ = h >> 16;
+            *q++ = h >> 8;
+            *q++ = h;
+        }
+        
+        len = max_packet_size - (q - s->buf);
+        if (len > size)
+            len = size;
+
+        memcpy(q, buf1, len);
+        q += len;
+
+        /* 90 KHz time stamp */
+        /* XXX: overflow */
+        s->timestamp = s->base_timestamp + 
+            (s->cur_timestamp * 90000LL * FRAME_RATE_BASE) / st->codec.frame_rate;
+        rtp_send_data(s1, s->buf, q - s->buf);
+
+        buf1 += len;
+        size -= len;
+    }
+    s->cur_timestamp++;
+}
+
+static void rtp_send_raw(AVFormatContext *s1,
+                         UINT8 *buf1, int size)
+{
+    RTPContext *s = s1->priv_data;
+    AVStream *st = s1->streams[0];
+    int len, max_packet_size;
+
+    max_packet_size = s->max_payload_size;
+
+    while (size > 0) {
+        len = max_packet_size;
+        if (len > size)
+            len = size;
+
+        /* 90 KHz time stamp */
+        /* XXX: overflow */
+        s->timestamp = s->base_timestamp + 
+            (s->cur_timestamp * 90000LL * FRAME_RATE_BASE) / st->codec.frame_rate;
+        rtp_send_data(s1, buf1, len);
+
+        buf1 += len;
+        size -= len;
+    }
+    s->cur_timestamp++;
+}
+
+/* write an RTP packet. 'buf1' must contain a single specific frame. */
+static int rtp_write_packet(AVFormatContext *s1, int stream_index,
+                            UINT8 *buf1, int size, int force_pts)
+{
+    RTPContext *s = s1->priv_data;
+    AVStream *st = s1->streams[0];
+    int rtcp_bytes;
+    INT64 ntp_time;
+    
+#ifdef DEBUG
+    printf("%d: write len=%d\n", stream_index, size);
+#endif
+
+    /* XXX: mpeg pts hardcoded. RTCP send every 0.5 seconds */
+    rtcp_bytes = ((s->octet_count - s->last_octet_count) * RTCP_TX_RATIO_NUM) / 
+        RTCP_TX_RATIO_DEN;
+    if (s->first_packet || rtcp_bytes >= 28) {
+        /* compute NTP time */
+        ntp_time = force_pts; // ((INT64)force_pts << 28) / 5625
+        rtcp_send_sr(s1, ntp_time); 
+        s->last_octet_count = s->octet_count;
+        s->first_packet = 0;
+    }
+
+    switch(st->codec.codec_id) {
+    case CODEC_ID_PCM_MULAW:
+    case CODEC_ID_PCM_ALAW:
+    case CODEC_ID_PCM_U8:
+    case CODEC_ID_PCM_S8:
+        rtp_send_samples(s1, buf1, size, 1 * st->codec.channels);
+        break;
+    case CODEC_ID_PCM_U16BE:
+    case CODEC_ID_PCM_U16LE:
+    case CODEC_ID_PCM_S16BE:
+    case CODEC_ID_PCM_S16LE:
+        rtp_send_samples(s1, buf1, size, 2 * st->codec.channels);
+        break;
+    case CODEC_ID_MP2:
+    case CODEC_ID_MP3LAME:
+        rtp_send_mpegaudio(s1, buf1, size);
+        break;
+    case CODEC_ID_MPEG1VIDEO:
+        rtp_send_mpegvideo(s1, buf1, size);
+        break;
+    default:
+        /* better than nothing : send the codec raw data */
+        rtp_send_raw(s1, buf1, size);
+        break;
+    }
+    return 0;
+}
+
+static int rtp_write_trailer(AVFormatContext *s1)
+{
+    //    RTPContext *s = s1->priv_data;
+    return 0;
+}
+
+AVInputFormat rtp_demux = {
+    "rtp",
+    "RTP input format",
+    sizeof(RTPContext),    
+    rtp_probe,
+    rtp_read_header,
+    rtp_read_packet,
+    rtp_read_close,
+    .flags = AVFMT_NOHEADER,
+};
+
+AVOutputFormat rtp_mux = {
+    "rtp",
+    "RTP output format",
+    NULL,
+    NULL,
+    sizeof(RTPContext),
+    CODEC_ID_PCM_MULAW,
+    CODEC_ID_NONE,
+    rtp_write_header,
+    rtp_write_packet,
+    rtp_write_trailer,
+};
+
+int rtp_init(void)
+{
+    av_register_output_format(&rtp_mux);
+    av_register_input_format(&rtp_demux);
+    return 0;
+}

libavformat/rtp.h

@@ -0,0 +1,40 @@
+/*
+ * RTP definitions
+ * Copyright (c) 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef RTP_H
+#define RTP_H
+
+#define RTP_MIN_PACKET_LENGTH 12
+#define RTP_MAX_PACKET_LENGTH 1500 /* XXX: suppress this define */
+
+int rtp_init(void);
+int rtp_get_codec_info(AVCodecContext *codec, int payload_type);
+int rtp_get_payload_type(AVCodecContext *codec);
+int rtp_parse_packet(AVFormatContext *s1, AVPacket *pkt, 
+                     const unsigned char *buf, int len);
+
+extern AVOutputFormat rtp_mux;
+extern AVInputFormat rtp_demux;
+
+int rtp_get_local_port(URLContext *h);
+int rtp_set_remote_url(URLContext *h, const char *uri);
+void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd);
+
+extern URLProtocol rtp_protocol;
+
+#endif /* RTP_H */

libavformat/rtpproto.c

@@ -0,0 +1,300 @@
+/*
+ * RTP network protocol
+ * Copyright (c) 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+#include <unistd.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifndef __BEOS__
+# include <arpa/inet.h>
+#else
+# include "barpainet.h"
+#endif
+#include <netdb.h>
+#include <fcntl.h>
+
+#define RTP_TX_BUF_SIZE  (64 * 1024)
+#define RTP_RX_BUF_SIZE  (128 * 1024)
+
+typedef struct RTPContext {
+    URLContext *rtp_hd, *rtcp_hd;
+    int rtp_fd, rtcp_fd;
+} RTPContext;
+
+/**
+ * If no filename is given to av_open_input_file because you want to
+ * get the local port first, then you must call this function to set
+ * the remote server address.
+ *
+ * @param s1 media file context
+ * @param uri of the remote server
+ * @return zero if no error.
+ */
+int rtp_set_remote_url(URLContext *h, const char *uri)
+{
+    RTPContext *s = h->priv_data;
+    char hostname[256];
+    int port;
+
+    char buf[1024];
+    char path[1024];
+    
+    url_split(NULL, 0, hostname, sizeof(hostname), &port, 
+              path, sizeof(path), uri);
+
+    snprintf(buf, sizeof(buf), "udp://%s:%d%s", hostname, port, path);
+    udp_set_remote_url(s->rtp_hd, buf);
+
+    snprintf(buf, sizeof(buf), "udp://%s:%d%s", hostname, port + 1, path);
+    udp_set_remote_url(s->rtcp_hd, buf);
+    return 0;
+}
+
+
+/* add option to url of the form:
+   "http://host:port/path?option1=val1&option2=val2... */
+void url_add_option(char *buf, int buf_size, const char *fmt, ...)
+{
+    char buf1[1024];
+    va_list ap;
+
+    va_start(ap, fmt);
+    if (strchr(buf, '?'))
+        pstrcat(buf, buf_size, "&");
+    else
+        pstrcat(buf, buf_size, "?");
+    vsnprintf(buf1, sizeof(buf1), fmt, ap);
+    pstrcat(buf, buf_size, buf1);
+    va_end(ap);
+}
+
+void build_udp_url(char *buf, int buf_size,
+                   const char *hostname, int port, 
+                   int local_port, int multicast, int ttl)
+{
+    snprintf(buf, buf_size, "udp://%s:%d", hostname, port);
+    if (local_port >= 0)
+        url_add_option(buf, buf_size, "localport=%d", local_port);
+    if (multicast)
+        url_add_option(buf, buf_size, "multicast=1", multicast);
+    if (ttl >= 0)
+        url_add_option(buf, buf_size, "ttl=%d", ttl);
+}
+
+/*
+ * url syntax: rtp://host:port[?option=val...]
+ * option: 'multicast=1' : enable multicast 
+ *         'ttl=n'       : set the ttl value (for multicast only)
+ *         'localport=n' : set the local port to n
+ *
+ */
+static int rtp_open(URLContext *h, const char *uri, int flags)
+{
+    RTPContext *s;
+    int port, is_output, is_multicast, ttl, local_port;
+    char hostname[256];
+    char buf[1024];
+    char path[1024];
+    const char *p;
+    
+    is_output = (flags & URL_WRONLY);
+
+    s = av_mallocz(sizeof(RTPContext));
+    if (!s)
+        return -ENOMEM;
+    h->priv_data = s;
+    
+    url_split(NULL, 0, hostname, sizeof(hostname), &port, 
+              path, sizeof(path), uri);
+    /* extract parameters */
+    is_multicast = 0;
+    ttl = -1;
+    local_port = -1;
+    p = strchr(uri, '?');
+    if (p) {
+        is_multicast = find_info_tag(buf, sizeof(buf), "multicast", p);
+        if (find_info_tag(buf, sizeof(buf), "ttl", p)) {
+            ttl = strtol(buf, NULL, 10);
+        }
+        if (find_info_tag(buf, sizeof(buf), "localport", p)) {
+            local_port = strtol(buf, NULL, 10);
+        }
+    }
+
+    build_udp_url(buf, sizeof(buf),
+                  hostname, port, local_port, is_multicast, ttl);
+    if (url_open(&s->rtp_hd, buf, flags) < 0)
+        goto fail;
+    local_port = udp_get_local_port(s->rtp_hd);
+    /* XXX: need to open another connexion if the port is not even */
+
+    /* well, should suppress localport in path */
+    
+    build_udp_url(buf, sizeof(buf),
+                  hostname, port + 1, local_port + 1, is_multicast, ttl);
+    if (url_open(&s->rtcp_hd, buf, flags) < 0)
+        goto fail;
+    
+    /* just to ease handle access. XXX: need to suppress direct handle
+       access */
+    s->rtp_fd = udp_get_file_handle(s->rtp_hd);
+    s->rtcp_fd = udp_get_file_handle(s->rtcp_hd);
+
+    h->max_packet_size = url_get_max_packet_size(s->rtp_hd); 
+    h->is_streamed = 1;
+    return 0;
+
+ fail:
+    if (s->rtp_hd)
+        url_close(s->rtp_hd);
+    if (s->rtcp_hd)
+        url_close(s->rtcp_hd);
+    av_free(s);
+    return -EIO;
+}
+
+static int rtp_read(URLContext *h, UINT8 *buf, int size)
+{
+    RTPContext *s = h->priv_data;
+    struct sockaddr_in from;
+    int from_len, len, fd_max, n;
+    fd_set rfds;
+#if 0
+    for(;;) {
+        from_len = sizeof(from);
+        len = recvfrom (s->rtp_fd, buf, size, 0,
+                        (struct sockaddr *)&from, &from_len);
+        if (len < 0) {
+            if (errno == EAGAIN || errno == EINTR)
+                continue;
+            return -EIO;
+        }
+        break;
+    }
+#else
+    for(;;) {
+        /* build fdset to listen to RTP and RTCP packets */
+        FD_ZERO(&rfds);
+        fd_max = s->rtp_fd;
+        FD_SET(s->rtp_fd, &rfds);
+        if (s->rtcp_fd > fd_max)
+            fd_max = s->rtcp_fd;
+        FD_SET(s->rtcp_fd, &rfds);
+        n = select(fd_max + 1, &rfds, NULL, NULL, NULL);
+        if (n > 0) {
+            /* first try RTCP */
+            if (FD_ISSET(s->rtcp_fd, &rfds)) {
+                from_len = sizeof(from);
+                len = recvfrom (s->rtcp_fd, buf, size, 0,
+                                (struct sockaddr *)&from, &from_len);
+                if (len < 0) {
+                    if (errno == EAGAIN || errno == EINTR)
+                        continue;
+                    return -EIO;
+                }
+                break;
+            }
+            /* then RTP */
+            if (FD_ISSET(s->rtp_fd, &rfds)) {
+                from_len = sizeof(from);
+                len = recvfrom (s->rtp_fd, buf, size, 0,
+                                (struct sockaddr *)&from, &from_len);
+                if (len < 0) {
+                    if (errno == EAGAIN || errno == EINTR)
+                        continue;
+                    return -EIO;
+                }
+                break;
+            }
+        }
+    }
+#endif
+    return len;
+}
+
+static int rtp_write(URLContext *h, UINT8 *buf, int size)
+{
+    RTPContext *s = h->priv_data;
+    int ret;
+    URLContext *hd;
+    
+    if (buf[1] >= 200 && buf[1] <= 204) {
+        /* RTCP payload type */
+        hd = s->rtcp_hd;
+    } else {
+        /* RTP payload type */
+        hd = s->rtp_hd;
+    }
+
+    ret = url_write(hd, buf, size);
+#if 0
+    {
+        struct timespec ts;
+        ts.tv_sec = 0;
+        ts.tv_nsec = 10 * 1000000;
+        nanosleep(&ts, NULL);
+    }
+#endif
+    return ret;
+}
+
+static int rtp_close(URLContext *h)
+{
+    RTPContext *s = h->priv_data;
+
+    url_close(s->rtp_hd);
+    url_close(s->rtcp_hd);
+    av_free(s);
+    return 0;
+}
+
+/**
+ * Return the local port used by the RTP connexion
+ * @param s1 media file context
+ * @return the local port number
+ */
+int rtp_get_local_port(URLContext *h)
+{
+    RTPContext *s = h->priv_data;
+    return udp_get_local_port(s->rtp_hd);
+}
+
+/**
+ * Return the rtp and rtcp file handles for select() usage to wait for several RTP
+ * streams at the same time.
+ * @param h media file context
+ */
+void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd)
+{
+    RTPContext *s = h->priv_data;
+
+    *prtp_fd = s->rtp_fd;
+    *prtcp_fd = s->rtcp_fd;
+}
+
+URLProtocol rtp_protocol = {
+    "rtp",
+    rtp_open,
+    rtp_read,
+    rtp_write,
+    NULL, /* seek */
+    rtp_close,
+};

libavformat/rtsp.h

@@ -0,0 +1,86 @@
+/*
+ * RTSP definitions
+ * Copyright (c) 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef RTSP_H
+#define RTSP_H
+
+/* RTSP handling */
+enum RTSPStatusCode {
+#define DEF(n, c, s) c = n,
+#include "rtspcodes.h"
+#undef DEF
+};
+
+enum RTSPProtocol {
+    RTSP_PROTOCOL_RTP_UDP = 0,
+    RTSP_PROTOCOL_RTP_TCP = 1,
+    RTSP_PROTOCOL_RTP_UDP_MULTICAST = 2,
+};
+
+#define RTSP_DEFAULT_PORT   554
+#define RTSP_MAX_TRANSPORTS 8
+
+typedef struct RTSPTransportField {
+    int interleaved_min, interleaved_max;  /* interleave ids, if TCP transport */
+    int port_min, port_max; /* RTP ports */
+    int client_port_min, client_port_max; /* RTP ports */
+    int server_port_min, server_port_max; /* RTP ports */
+    int ttl; /* ttl value */
+    UINT32 destination; /* destination IP address */
+    enum RTSPProtocol protocol;
+} RTSPTransportField;
+
+typedef struct RTSPHeader {
+    int content_length;
+    enum RTSPStatusCode status_code; /* response code from server */
+    int nb_transports;
+    RTSPTransportField transports[RTSP_MAX_TRANSPORTS];
+    int seq; /* sequence number */
+    char session_id[512];
+} RTSPHeader;
+
+/* the callback can be used to extend the connection setup/teardown step */
+enum RTSPCallbackAction {
+    RTSP_ACTION_SERVER_SETUP,
+    RTSP_ACTION_SERVER_TEARDOWN,
+    RTSP_ACTION_CLIENT_SETUP,
+    RTSP_ACTION_CLIENT_TEARDOWN,
+};
+
+typedef struct RTSPActionServerSetup {
+    UINT32 ipaddr;
+    char transport_option[512];
+} RTSPActionServerSetup;
+
+typedef int FFRTSPCallback(enum RTSPCallbackAction action, 
+                           const char *session_id,
+                           char *buf, int buf_size,
+                           void *arg);
+
+void rtsp_set_callback(FFRTSPCallback *rtsp_cb);
+
+int rtsp_init(void);
+void rtsp_parse_line(RTSPHeader *reply, const char *buf);
+
+extern int rtsp_abort_req;
+extern int rtsp_default_protocols;
+extern int rtsp_rtp_port_min;
+extern int rtsp_rtp_port_max;
+extern FFRTSPCallback *ff_rtsp_callback;
+
+#endif /* RTSP_H */

libavformat/rtspcodes.h

@@ -0,0 +1,11 @@
+DEF(200, RTSP_STATUS_OK, "OK")
+DEF(405, RTSP_STATUS_METHOD, "Method Not Allowed")
+DEF(453, RTSP_STATUS_BANDWIDTH, "Not Enough Bandwidth")
+DEF(454, RTSP_STATUS_SESSION, "Session Not Found")
+DEF(455, RTSP_STATUS_STATE, "Method Not Valid in This State")
+DEF(459, RTSP_STATUS_AGGREGATE, "Aggregate operation not allowed")
+DEF(460, RTSP_STATUS_ONLY_AGGREGATE, "Only aggregate operation allowed")
+DEF(461, RTSP_STATUS_TRANSPORT, "Unsupported transport")
+DEF(500, RTSP_STATUS_INTERNAL, "Internal Server Error")
+DEF(503, RTSP_STATUS_SERVICE, "Service Unavailable")
+DEF(505, RTSP_STATUS_VERSION, "RTSP Version not supported")

libavformat/strptime.h

@@ -0,0 +1,32 @@
+/* strptime.h
+ *
+ * $Id$
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef __STRPTIME_H__
+#define __STRPTIME_H__
+
+/*
+ * Version of "strptime()", for the benefit of OSes that don't have it.
+ */
+extern char *strptime(const char *, const char *, struct tm *);
+
+#endif

libavformat/swf.c

@@ -0,0 +1,571 @@
+/*
+ * Flash Compatible Streaming Format
+ * Copyright (c) 2000 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+
+/* should have a generic way to indicate probable size */
+#define DUMMY_FILE_SIZE   (100 * 1024 * 1024)
+#define DUMMY_DURATION    600 /* in seconds */
+
+#define TAG_END           0
+#define TAG_SHOWFRAME     1
+#define TAG_DEFINESHAPE   2
+#define TAG_FREECHARACTER 3
+#define TAG_PLACEOBJECT   4
+#define TAG_REMOVEOBJECT  5
+#define TAG_STREAMHEAD    18
+#define TAG_STREAMBLOCK   19
+#define TAG_JPEG2         21
+
+#define TAG_LONG         0x100
+
+/* flags for shape definition */
+#define FLAG_MOVETO      0x01
+#define FLAG_SETFILL0    0x02
+#define FLAG_SETFILL1    0x04
+
+/* character id used */
+#define BITMAP_ID 0
+#define SHAPE_ID  1
+
+typedef struct {
+    offset_t duration_pos;
+    offset_t tag_pos;
+    int tag;
+} SWFContext;
+
+static void put_swf_tag(AVFormatContext *s, int tag)
+{
+    SWFContext *swf = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+
+    swf->tag_pos = url_ftell(pb);
+    swf->tag = tag;
+    /* reserve some room for the tag */
+    if (tag & TAG_LONG) {
+        put_le16(pb, 0);
+        put_le32(pb, 0);
+    } else {
+        put_le16(pb, 0);
+    }
+}
+
+static void put_swf_end_tag(AVFormatContext *s)
+{
+    SWFContext *swf = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    offset_t pos;
+    int tag_len, tag;
+
+    pos = url_ftell(pb);
+    tag_len = pos - swf->tag_pos - 2;
+    tag = swf->tag;
+    url_fseek(pb, swf->tag_pos, SEEK_SET);
+    if (tag & TAG_LONG) {
+        tag &= ~TAG_LONG;
+        put_le16(pb, (tag << 6) | 0x3f);
+        put_le32(pb, tag_len - 4);
+    } else {
+        assert(tag_len < 0x3f);
+        put_le16(pb, (tag << 6) | tag_len);
+    }
+    url_fseek(pb, pos, SEEK_SET);
+}
+
+static inline void max_nbits(int *nbits_ptr, int val)
+{
+    int n;
+
+    if (val == 0)
+        return;
+    val = abs(val);
+    n = 1;
+    while (val != 0) {
+        n++;
+        val >>= 1;
+    }
+    if (n > *nbits_ptr)
+        *nbits_ptr = n;
+}
+
+static void put_swf_rect(ByteIOContext *pb, 
+                         int xmin, int xmax, int ymin, int ymax)
+{
+    PutBitContext p;
+    UINT8 buf[256];
+    int nbits, mask;
+
+    init_put_bits(&p, buf, sizeof(buf), NULL, NULL);
+    
+    nbits = 0;
+    max_nbits(&nbits, xmin);
+    max_nbits(&nbits, xmax);
+    max_nbits(&nbits, ymin);
+    max_nbits(&nbits, ymax);
+    mask = (1 << nbits) - 1;
+
+    /* rectangle info */
+    put_bits(&p, 5, nbits);
+    put_bits(&p, nbits, xmin & mask);
+    put_bits(&p, nbits, xmax & mask);
+    put_bits(&p, nbits, ymin & mask);
+    put_bits(&p, nbits, ymax & mask);
+    
+    flush_put_bits(&p);
+    put_buffer(pb, buf, pbBufPtr(&p) - p.buf);
+}
+
+static void put_swf_line_edge(PutBitContext *pb, int dx, int dy)
+{
+    int nbits, mask;
+
+    put_bits(pb, 1, 1); /* edge */
+    put_bits(pb, 1, 1); /* line select */
+    nbits = 2;
+    max_nbits(&nbits, dx);
+    max_nbits(&nbits, dy);
+
+    mask = (1 << nbits) - 1;
+    put_bits(pb, 4, nbits - 2); /* 16 bits precision */
+    if (dx == 0) {
+      put_bits(pb, 1, 0); 
+      put_bits(pb, 1, 1); 
+      put_bits(pb, nbits, dy & mask);
+    } else if (dy == 0) {
+      put_bits(pb, 1, 0); 
+      put_bits(pb, 1, 0); 
+      put_bits(pb, nbits, dx & mask);
+    } else {
+      put_bits(pb, 1, 1); 
+      put_bits(pb, nbits, dx & mask);
+      put_bits(pb, nbits, dy & mask);
+    }
+}
+
+#define FRAC_BITS 16
+
+/* put matrix (not size optimized */
+static void put_swf_matrix(ByteIOContext *pb,
+                           int a, int b, int c, int d, int tx, int ty)
+{
+    PutBitContext p;
+    UINT8 buf[256];
+
+    init_put_bits(&p, buf, sizeof(buf), NULL, NULL);
+    
+    put_bits(&p, 1, 1); /* a, d present */
+    put_bits(&p, 5, 20); /* nb bits */
+    put_bits(&p, 20, a);
+    put_bits(&p, 20, d);
+    
+    put_bits(&p, 1, 1); /* b, c present */
+    put_bits(&p, 5, 20); /* nb bits */
+    put_bits(&p, 20, c);
+    put_bits(&p, 20, b);
+
+    put_bits(&p, 5, 20); /* nb bits */
+    put_bits(&p, 20, tx);
+    put_bits(&p, 20, ty);
+
+    flush_put_bits(&p);
+    put_buffer(pb, buf, pbBufPtr(&p) - p.buf);
+}
+
+/* XXX: handle audio only */
+static int swf_write_header(AVFormatContext *s)
+{
+    SWFContext *swf;
+    ByteIOContext *pb = &s->pb;
+    AVCodecContext *enc, *audio_enc, *video_enc;
+    PutBitContext p;
+    UINT8 buf1[256];
+    int i, width, height, rate;
+
+    swf = av_malloc(sizeof(SWFContext));
+    if (!swf)
+        return -1;
+    s->priv_data = swf;
+
+    video_enc = NULL;
+    audio_enc = NULL;
+    for(i=0;i<s->nb_streams;i++) {
+        enc = &s->streams[i]->codec;
+        if (enc->codec_type == CODEC_TYPE_AUDIO)
+            audio_enc = enc;
+        else
+            video_enc = enc;
+    }
+
+    if (!video_enc) {
+        /* currenty, cannot work correctly if audio only */
+        width = 320;
+        height = 200;
+        rate = 10 * FRAME_RATE_BASE;
+    } else {
+        width = video_enc->width;
+        height = video_enc->height;
+        rate = video_enc->frame_rate;
+    }
+
+    put_tag(pb, "FWS");
+    put_byte(pb, 4); /* version (should use 4 for mpeg audio support) */
+    put_le32(pb, DUMMY_FILE_SIZE); /* dummy size 
+                                      (will be patched if not streamed) */ 
+
+    put_swf_rect(pb, 0, width, 0, height);
+    put_le16(pb, (rate * 256) / FRAME_RATE_BASE); /* frame rate */
+    swf->duration_pos = url_ftell(pb);
+    put_le16(pb, (UINT16)(DUMMY_DURATION * (INT64)rate / FRAME_RATE_BASE)); /* frame count */
+    
+    /* define a shape with the jpeg inside */
+
+    put_swf_tag(s, TAG_DEFINESHAPE);
+
+    put_le16(pb, SHAPE_ID); /* ID of shape */
+    /* bounding rectangle */
+    put_swf_rect(pb, 0, width, 0, height);
+    /* style info */
+    put_byte(pb, 1); /* one fill style */
+    put_byte(pb, 0x41); /* clipped bitmap fill */
+    put_le16(pb, BITMAP_ID); /* bitmap ID */
+    /* position of the bitmap */
+    put_swf_matrix(pb, (int)(1.0 * (1 << FRAC_BITS)), 0, 
+                   0, (int)(1.0 * (1 << FRAC_BITS)), 0, 0);
+    put_byte(pb, 0); /* no line style */
+    
+    /* shape drawing */
+    init_put_bits(&p, buf1, sizeof(buf1), NULL, NULL);
+    put_bits(&p, 4, 1); /* one fill bit */
+    put_bits(&p, 4, 0); /* zero line bit */
+    
+    put_bits(&p, 1, 0); /* not an edge */
+    put_bits(&p, 5, FLAG_MOVETO | FLAG_SETFILL0);
+    put_bits(&p, 5, 1); /* nbits */
+    put_bits(&p, 1, 0); /* X */
+    put_bits(&p, 1, 0); /* Y */
+    put_bits(&p, 1, 1); /* set fill style 1 */
+    
+    /* draw the rectangle ! */
+    put_swf_line_edge(&p, width, 0);
+    put_swf_line_edge(&p, 0, height);
+    put_swf_line_edge(&p, -width, 0);
+    put_swf_line_edge(&p, 0, -height);
+    
+    /* end of shape */
+    put_bits(&p, 1, 0); /* not an edge */
+    put_bits(&p, 5, 0);
+
+    flush_put_bits(&p);
+    put_buffer(pb, buf1, pbBufPtr(&p) - p.buf);
+
+    put_swf_end_tag(s);
+
+    
+    if (audio_enc) {
+        int v;
+
+        /* start sound */
+
+        v = 0;
+        switch(audio_enc->sample_rate) {
+        case 11025:
+            v |= 1 << 2;
+            break;
+        case 22050:
+            v |= 2 << 2;
+            break;
+        case 44100:
+            v |= 3 << 2;
+            break;
+        default:
+            /* not supported */
+            av_free(swf);
+            return -1;
+        }
+        if (audio_enc->channels == 2)
+            v |= 1;
+        v |= 0x20; /* mp3 compressed */
+        v |= 0x02; /* 16 bits */
+        
+        put_swf_tag(s, TAG_STREAMHEAD);
+        put_byte(&s->pb, 0);
+        put_byte(&s->pb, v);
+        put_le16(&s->pb, (audio_enc->sample_rate * FRAME_RATE_BASE) / rate);  /* avg samples per frame */
+        
+        
+        put_swf_end_tag(s);
+    }
+
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static int swf_write_video(AVFormatContext *s, 
+                           AVCodecContext *enc, UINT8 *buf, int size)
+{
+    ByteIOContext *pb = &s->pb;
+    static int tag_id = 0;
+
+    if (enc->frame_number > 1) {
+        /* remove the shape */
+        put_swf_tag(s, TAG_REMOVEOBJECT);
+        put_le16(pb, SHAPE_ID); /* shape ID */
+        put_le16(pb, 1); /* depth */
+        put_swf_end_tag(s);
+        
+        /* free the bitmap */
+        put_swf_tag(s, TAG_FREECHARACTER);
+        put_le16(pb, BITMAP_ID);
+        put_swf_end_tag(s);
+    }
+
+    put_swf_tag(s, TAG_JPEG2 | TAG_LONG);
+
+    put_le16(pb, tag_id); /* ID of the image */
+
+    /* a dummy jpeg header seems to be required */
+    put_byte(pb, 0xff); 
+    put_byte(pb, 0xd8);
+    put_byte(pb, 0xff);
+    put_byte(pb, 0xd9);
+    /* write the jpeg image */
+    put_buffer(pb, buf, size);
+
+    put_swf_end_tag(s);
+
+    /* draw the shape */
+
+    put_swf_tag(s, TAG_PLACEOBJECT);
+    put_le16(pb, SHAPE_ID); /* shape ID */
+    put_le16(pb, 1); /* depth */
+    put_swf_matrix(pb, 1 << FRAC_BITS, 0, 0, 1 << FRAC_BITS, 0, 0);
+    put_swf_end_tag(s);
+    
+    /* output the frame */
+    put_swf_tag(s, TAG_SHOWFRAME);
+    put_swf_end_tag(s);
+    
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static int swf_write_audio(AVFormatContext *s, UINT8 *buf, int size)
+{
+    ByteIOContext *pb = &s->pb;
+
+    put_swf_tag(s, TAG_STREAMBLOCK | TAG_LONG);
+
+    put_buffer(pb, buf, size);
+    
+    put_swf_end_tag(s);
+    put_flush_packet(&s->pb);
+    return 0;
+}
+
+static int swf_write_packet(AVFormatContext *s, int stream_index, 
+                           UINT8 *buf, int size, int force_pts)
+{
+    AVCodecContext *codec = &s->streams[stream_index]->codec;
+    if (codec->codec_type == CODEC_TYPE_AUDIO)
+        return swf_write_audio(s, buf, size);
+    else
+        return swf_write_video(s, codec, buf, size);
+}
+
+static int swf_write_trailer(AVFormatContext *s)
+{
+    SWFContext *swf = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    AVCodecContext *enc, *video_enc;
+    int file_size, i;
+
+    video_enc = NULL;
+    for(i=0;i<s->nb_streams;i++) {
+        enc = &s->streams[i]->codec;
+        if (enc->codec_type == CODEC_TYPE_VIDEO)
+            video_enc = enc;
+    }
+
+    put_swf_tag(s, TAG_END);
+    put_swf_end_tag(s);
+    
+    put_flush_packet(&s->pb);
+
+    /* patch file size and number of frames if not streamed */
+    if (!url_is_streamed(&s->pb) && video_enc) {
+        file_size = url_ftell(pb);
+        url_fseek(pb, 4, SEEK_SET);
+        put_le32(pb, file_size);
+        url_fseek(pb, swf->duration_pos, SEEK_SET);
+        put_le16(pb, video_enc->frame_number);
+    }
+    return 0;
+}
+
+/***********************************/
+/* just to extract MP3 from swf */
+
+static int get_swf_tag(ByteIOContext *pb, int *len_ptr)
+{
+    int tag, len;
+    
+    if (url_feof(pb))
+        return -1;
+
+    tag = get_le16(pb);
+    len = tag & 0x3f;
+    tag = tag >> 6;
+    if (len == 0x3f) {
+        len = get_le32(pb);
+    }
+    *len_ptr = len;
+    return tag;
+}
+
+
+static int swf_probe(AVProbeData *p)
+{
+    /* check file header */
+    if (p->buf_size <= 16)
+        return 0;
+    if (p->buf[0] == 'F' && p->buf[1] == 'W' &&
+        p->buf[2] == 'S')
+        return AVPROBE_SCORE_MAX;
+    else
+        return 0;
+}
+
+static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+    ByteIOContext *pb = &s->pb;
+    int nbits, len, frame_rate, tag, v;
+    AVStream *st;
+
+    if ((get_be32(pb) & 0xffffff00) != MKBETAG('F', 'W', 'S', 0))
+        return -EIO;
+    get_le32(pb);
+    /* skip rectangle size */
+    nbits = get_byte(pb) >> 3;
+    len = (4 * nbits - 3 + 7) / 8;
+    url_fskip(pb, len);
+    frame_rate = get_le16(pb);
+    get_le16(pb); /* frame count */
+
+    for(;;) {
+        tag = get_swf_tag(pb, &len);
+        if (tag < 0) {
+            fprintf(stderr, "No streaming found in SWF\n");
+            return -EIO;
+        }
+        if (tag == TAG_STREAMHEAD) {
+            /* streaming found */
+            get_byte(pb);
+            v = get_byte(pb);
+            get_le16(pb);
+            /* if mp3 streaming found, OK */
+            if ((v & 0x20) != 0) {
+                st = av_mallocz(sizeof(AVStream));
+                if (!st)
+                    return -ENOMEM;
+                if (v & 0x01)
+                    st->codec.channels = 2;
+                else
+                    st->codec.channels = 1;
+                s->nb_streams = 1;
+                s->streams[0] = st;
+
+                switch((v>> 2) & 0x03) {
+                case 1:
+                    st->codec.sample_rate = 11025;
+                    break;
+                case 2:
+                    st->codec.sample_rate = 22050;
+                    break;
+                case 3:
+                    st->codec.sample_rate = 44100;
+                    break;
+                default:
+                    av_free(st);
+                    return -EIO;
+                }
+                st->codec.codec_type = CODEC_TYPE_AUDIO;
+                st->codec.codec_id = CODEC_ID_MP2;
+                break;
+            }
+        } else {
+            url_fskip(pb, len);
+        }
+    }
+
+    return 0;
+}
+
+static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    ByteIOContext *pb = &s->pb;
+    int tag, len;
+    
+    for(;;) {
+        tag = get_swf_tag(pb, &len);
+        if (tag < 0) 
+            return -EIO;
+        if (tag == TAG_STREAMBLOCK) {
+            av_new_packet(pkt, len);
+            get_buffer(pb, pkt->data, pkt->size);
+            break;
+        } else {
+            url_fskip(pb, len);
+        }
+    }
+    return 0;
+}
+
+static int swf_read_close(AVFormatContext *s)
+{
+     return 0;
+}
+
+static AVInputFormat swf_iformat = {
+    "swf",
+    "Flash format",
+    0,
+    swf_probe,
+    swf_read_header,
+    swf_read_packet,
+    swf_read_close,
+};
+
+static AVOutputFormat swf_oformat = {
+    "swf",
+    "Flash format",
+    "application/x-shockwave-flash",
+    "swf",
+    sizeof(SWFContext),
+    CODEC_ID_MP2,
+    CODEC_ID_MJPEG,
+    swf_write_header,
+    swf_write_packet,
+    swf_write_trailer,
+};
+
+int swf_init(void)
+{
+    av_register_input_format(&swf_iformat);
+    av_register_output_format(&swf_oformat);
+    return 0;
+}

libavformat/tcp.c

@@ -0,0 +1,176 @@
+/*
+ * TCP protocol
+ * Copyright (c) 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include <unistd.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifndef __BEOS__
+# include <arpa/inet.h>
+#else
+# include "barpainet.h"
+#endif
+#include <netdb.h>
+
+typedef struct TCPContext {
+    int fd;
+} TCPContext;
+
+/* resolve host with also IP address parsing */
+int resolve_host(struct in_addr *sin_addr, const char *hostname)
+{
+    struct hostent *hp;
+
+    if ((inet_aton(hostname, sin_addr)) == 0) {
+        hp = gethostbyname(hostname);
+        if (!hp)
+            return -1;
+        memcpy (sin_addr, hp->h_addr, sizeof(struct in_addr));
+    }
+    return 0;
+}
+
+/* return non zero if error */
+static int tcp_open(URLContext *h, const char *uri, int flags)
+{
+    struct sockaddr_in dest_addr;
+    char hostname[1024], *q;
+    int port, fd = -1;
+    TCPContext *s;
+    const char *p;
+
+    s = av_malloc(sizeof(TCPContext));
+    if (!s)
+        return -ENOMEM;
+    h->priv_data = s;
+    p = uri;
+    if (!strstart(p, "tcp://", &p))
+        goto fail;
+    q = hostname;
+    while (*p != ':' && *p != '/' && *p != '\0') {
+        if ((q - hostname) < sizeof(hostname) - 1)
+            *q++ = *p;
+        p++;
+    }
+    *q = '\0';
+    if (*p != ':')
+        goto fail;
+    p++;
+    port = strtoul(p, (char **)&p, 10);
+    if (port <= 0 || port >= 65536)
+        goto fail;
+    
+    dest_addr.sin_family = AF_INET;
+    dest_addr.sin_port = htons(port);
+    if (resolve_host(&dest_addr.sin_addr, hostname) < 0)
+        goto fail;
+
+    fd = socket(PF_INET, SOCK_STREAM, 0);
+    if (fd < 0)
+        goto fail;
+
+    if (connect(fd, (struct sockaddr *)&dest_addr, 
+                sizeof(dest_addr)) < 0)
+        goto fail;
+
+    s->fd = fd;
+    return 0;
+
+ fail:
+    if (fd >= 0)
+        close(fd);
+    av_free(s);
+    return -EIO;
+}
+
+static int tcp_read(URLContext *h, UINT8 *buf, int size)
+{
+    TCPContext *s = h->priv_data;
+    int size1, len;
+
+    size1 = size;
+    while (size > 0) {
+#ifdef CONFIG_BEOS_NETSERVER
+        len = recv (s->fd, buf, size, 0);
+#else
+        len = read (s->fd, buf, size);
+#endif
+        if (len < 0) {
+            if (errno != EINTR && errno != EAGAIN)
+#ifdef __BEOS__
+                return errno;
+#else
+                return -errno;
+#endif
+            else
+                continue;
+        } else if (len == 0) {
+            break;
+        }
+        size -= len;
+        buf += len;
+    }
+    return size1 - size;
+}
+
+static int tcp_write(URLContext *h, UINT8 *buf, int size)
+{
+    TCPContext *s = h->priv_data;
+    int ret, size1;
+
+    size1 = size;
+    while (size > 0) {
+#ifdef CONFIG_BEOS_NETSERVER
+        ret = send (s->fd, buf, size, 0);
+#else
+        ret = write (s->fd, buf, size);
+#endif
+        if (ret < 0 && errno != EINTR && errno != EAGAIN)
+#ifdef __BEOS__
+            return errno;
+#else
+            return -errno;
+#endif
+        size -= ret;
+        buf += ret;
+    }
+    return size1 - size;
+}
+
+static int tcp_close(URLContext *h)
+{
+    TCPContext *s = h->priv_data;
+#ifdef CONFIG_BEOS_NETSERVER
+    closesocket(s->fd);
+#else
+    close(s->fd);
+#endif
+    av_free(s);
+    return 0;
+}
+
+URLProtocol tcp_protocol = {
+    "tcp",
+    tcp_open,
+    tcp_read,
+    tcp_write,
+    NULL, /* seek */
+    tcp_close,
+};

libavformat/udp.c

@@ -0,0 +1,272 @@
+/*
+ * UDP prototype streaming system
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifndef __BEOS__
+# include <arpa/inet.h>
+#else
+# include "barpainet.h"
+#endif
+#include <netdb.h>
+
+typedef struct {
+    int udp_fd;
+    int ttl;
+    int is_multicast;
+    int local_port;
+    struct ip_mreq mreq;
+    struct sockaddr_in dest_addr;
+} UDPContext;
+
+#define UDP_TX_BUF_SIZE 32768
+
+/**
+ * If no filename is given to av_open_input_file because you want to
+ * get the local port first, then you must call this function to set
+ * the remote server address.
+ *
+ * url syntax: udp://host:port[?option=val...]
+ * option: 'multicast=1' : enable multicast 
+ *         'ttl=n'       : set the ttl value (for multicast only)
+ *         'localport=n' : set the local port
+ *
+ * @param s1 media file context
+ * @param uri of the remote server
+ * @return zero if no error.
+ */
+int udp_set_remote_url(URLContext *h, const char *uri)
+{
+    UDPContext *s = h->priv_data;
+    char hostname[256];
+    int port;
+    
+    url_split(NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+
+    /* set the destination address */
+    if (resolve_host(&s->dest_addr.sin_addr, hostname) < 0)
+        return -EIO;
+    s->dest_addr.sin_family = AF_INET;
+    s->dest_addr.sin_port = htons(port);
+    return 0;
+}
+
+/**
+ * Return the local port used by the UDP connexion
+ * @param s1 media file context
+ * @return the local port number
+ */
+int udp_get_local_port(URLContext *h)
+{
+    UDPContext *s = h->priv_data;
+    return s->local_port;
+}
+
+/**
+ * Return the udp file handle for select() usage to wait for several RTP
+ * streams at the same time.
+ * @param h media file context
+ */
+int udp_get_file_handle(URLContext *h)
+{
+    UDPContext *s = h->priv_data;
+    return s->udp_fd;
+}
+
+/* put it in UDP context */
+/* return non zero if error */
+static int udp_open(URLContext *h, const char *uri, int flags)
+{
+    struct sockaddr_in my_addr, my_addr1;
+    char hostname[1024];
+    int port, udp_fd = -1, tmp;
+    UDPContext *s = NULL;
+    int is_output, len;
+    const char *p;
+    char buf[256];
+
+    h->is_streamed = 1;
+
+    is_output = (flags & URL_WRONLY);
+    
+    s = av_malloc(sizeof(UDPContext));
+    if (!s)
+        return -ENOMEM;
+
+    h->priv_data = s;
+    s->ttl = 16;
+    s->is_multicast = 0;
+    p = strchr(uri, '?');
+    if (p) {
+        s->is_multicast = find_info_tag(buf, sizeof(buf), "multicast", p);
+        if (find_info_tag(buf, sizeof(buf), "ttl", p)) {
+            s->ttl = strtol(buf, NULL, 10);
+        }
+        if (find_info_tag(buf, sizeof(buf), "localport", p)) {
+            s->local_port = strtol(buf, NULL, 10);
+        }
+    }
+
+    /* fill the dest addr */
+    url_split(NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+    
+    /* XXX: fix url_split */
+    if (hostname[0] == '\0' || hostname[0] == '?') {
+        /* only accepts null hostname if input */
+        if (s->is_multicast || (flags & URL_WRONLY))
+            goto fail;
+    } else {
+        udp_set_remote_url(h, uri);
+    }
+
+    udp_fd = socket(PF_INET, SOCK_DGRAM, 0);
+    if (udp_fd < 0)
+        goto fail;
+
+    my_addr.sin_family = AF_INET;
+    my_addr.sin_addr.s_addr = htonl (INADDR_ANY);
+    if (s->is_multicast && !(h->flags & URL_WRONLY)) {
+        /* special case: the bind must be done on the multicast address port */
+        my_addr.sin_port = s->dest_addr.sin_port;
+    } else {
+        my_addr.sin_port = htons(s->local_port);
+    }
+
+    /* the bind is needed to give a port to the socket now */
+    if (bind(udp_fd,(struct sockaddr *)&my_addr, sizeof(my_addr)) < 0) 
+        goto fail;
+
+    len = sizeof(my_addr1);
+    getsockname(udp_fd, (struct sockaddr *)&my_addr1, &len);
+    s->local_port = ntohs(my_addr1.sin_port);
+
+#ifndef CONFIG_BEOS_NETSERVER
+    if (s->is_multicast) {
+        if (h->flags & URL_WRONLY) {
+            /* output */
+            if (setsockopt(udp_fd, IPPROTO_IP, IP_MULTICAST_TTL, 
+                           &s->ttl, sizeof(s->ttl)) < 0) {
+                perror("IP_MULTICAST_TTL");
+                goto fail;
+            }
+        } else {
+            /* input */
+            memset(&s->mreq, 0, sizeof(s->mreq));
+            s->mreq.imr_multiaddr = s->dest_addr.sin_addr;
+            s->mreq.imr_interface.s_addr = htonl (INADDR_ANY);
+            if (setsockopt(udp_fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, 
+                           &s->mreq, sizeof(s->mreq)) < 0) {
+                perror("rtp: IP_ADD_MEMBERSHIP");
+                goto fail;
+            }
+        }
+    }
+#endif
+
+    if (is_output) {
+        /* limit the tx buf size to limit latency */
+        tmp = UDP_TX_BUF_SIZE;
+        if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) {
+            perror("setsockopt sndbuf");
+            goto fail;
+        }
+    }
+
+    s->udp_fd = udp_fd;
+    h->max_packet_size = 1472; /* XXX: probe it ? */
+    return 0;
+ fail:
+    if (udp_fd >= 0)
+#ifdef CONFIG_BEOS_NETSERVER
+        closesocket(udp_fd);
+#else
+        close(udp_fd);
+#endif
+    av_free(s);
+    return -EIO;
+}
+
+static int udp_read(URLContext *h, UINT8 *buf, int size)
+{
+    UDPContext *s = h->priv_data;
+    struct sockaddr_in from;
+    int from_len, len;
+
+    for(;;) {
+        from_len = sizeof(from);
+        len = recvfrom (s->udp_fd, buf, size, 0,
+                        (struct sockaddr *)&from, &from_len);
+        if (len < 0) {
+            if (errno != EAGAIN && errno != EINTR)
+                return -EIO;
+        } else {
+            break;
+        }
+    }
+    return len;
+}
+
+static int udp_write(URLContext *h, UINT8 *buf, int size)
+{
+    UDPContext *s = h->priv_data;
+    int ret;
+
+    for(;;) {
+        ret = sendto (s->udp_fd, buf, size, 0, 
+                      (struct sockaddr *) &s->dest_addr,
+                      sizeof (s->dest_addr));
+        if (ret < 0) {
+            if (errno != EINTR && errno != EAGAIN)
+                return -EIO;
+        } else {
+            break;
+        }
+    }
+    return size;
+}
+
+static int udp_close(URLContext *h)
+{
+    UDPContext *s = h->priv_data;
+
+#ifndef CONFIG_BEOS_NETSERVER
+    if (s->is_multicast && !(h->flags & URL_WRONLY)) {
+        if (setsockopt(s->udp_fd, IPPROTO_IP, IP_DROP_MEMBERSHIP, 
+                       &s->mreq, sizeof(s->mreq)) < 0) {
+            perror("IP_DROP_MEMBERSHIP");
+        }
+    }
+    close(s->udp_fd);
+#else
+    closesocket(s->udp_fd);
+#endif
+    av_free(s);
+    return 0;
+}
+
+URLProtocol udp_protocol = {
+    "udp",
+    udp_open,
+    udp_read,
+    udp_write,
+    NULL, /* seek */
+    udp_close,
+};

libavformat/wav.c

@@ -0,0 +1,326 @@
+/* 
+ * WAV encoder and decoder
+ * Copyright (c) 2001, 2002 Fabrice Bellard.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include "avformat.h"
+#include "avi.h"
+
+const CodecTag codec_wav_tags[] = {
+    { CODEC_ID_MP2, 0x50 },
+    { CODEC_ID_MP3LAME, 0x55 },
+    { CODEC_ID_AC3, 0x2000 },
+    { CODEC_ID_PCM_S16LE, 0x01 },
+    { CODEC_ID_PCM_U8, 0x01 }, /* must come after s16le in this list */
+    { CODEC_ID_PCM_ALAW, 0x06 },
+    { CODEC_ID_PCM_MULAW, 0x07 },
+    { CODEC_ID_ADPCM_MS, 0x02 },
+    { CODEC_ID_ADPCM_IMA_WAV, 0x11 },
+    { CODEC_ID_WMAV1, 0x160 },
+    { CODEC_ID_WMAV2, 0x161 },
+    { 0, 0 },
+};
+
+/* WAVEFORMATEX header */
+/* returns the size or -1 on error */
+int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
+{
+    int tag, bps, blkalign, bytespersec;
+    int hdrsize = 18;
+
+    tag = codec_get_tag(codec_wav_tags, enc->codec_id);
+    if (tag == 0)
+        return -1;
+    put_le16(pb, tag);
+    put_le16(pb, enc->channels);
+    put_le32(pb, enc->sample_rate);
+    if (enc->codec_id == CODEC_ID_PCM_U8 ||
+        enc->codec_id == CODEC_ID_PCM_ALAW ||
+        enc->codec_id == CODEC_ID_PCM_MULAW) {
+        bps = 8;
+    } else if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3LAME) {
+        bps = 0;
+    } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS) {
+        bps = 4;
+    } else {
+        bps = 16;
+    }
+    
+    if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3LAME) {
+        blkalign = 1;
+        //blkalign = 144 * enc->bit_rate/enc->sample_rate;
+    } else if (enc->block_align != 0) { /* specified by the codec */
+        blkalign = enc->block_align;
+    } else
+        blkalign = enc->channels*bps >> 3;
+    if (enc->codec_id == CODEC_ID_PCM_U8 ||
+        enc->codec_id == CODEC_ID_PCM_S16LE) {
+        bytespersec = enc->sample_rate * blkalign;
+    } else {
+        bytespersec = enc->bit_rate / 8;
+    }
+    put_le32(pb, bytespersec); /* bytes per second */
+    put_le16(pb, blkalign); /* block align */
+    put_le16(pb, bps); /* bits per sample */
+    if (enc->codec_id == CODEC_ID_MP3LAME) {
+        put_le16(pb, 12); /* wav_extra_size */
+        hdrsize += 12;
+        put_le16(pb, 1); /* wID */
+        put_le32(pb, 2); /* fdwFlags */
+        put_le16(pb, 1152); /* nBlockSize */
+        put_le16(pb, 1); /* nFramesPerBlock */
+        put_le16(pb, 1393); /* nCodecDelay */
+    } else if (enc->codec_id == CODEC_ID_MP2) {
+        put_le16(pb, 22); /* wav_extra_size */
+        hdrsize += 22;
+        put_le16(pb, 2);  /* fwHeadLayer */
+        put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
+        put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
+        put_le16(pb, 0);  /* fwHeadModeExt */
+        put_le16(pb, 1);  /* wHeadEmphasis */
+        put_le16(pb, 16); /* fwHeadFlags */
+        put_le32(pb, 0);  /* dwPTSLow */
+        put_le32(pb, 0);  /* dwPTSHigh */
+    } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
+        put_le16(pb, 2); /* wav_extra_size */
+        put_le16(pb, ((enc->block_align - 4 * enc->channels) / (4 * enc->channels)) * 8 + 1); /* wSamplesPerBlock */
+    } else
+        put_le16(pb, 0); /* wav_extra_size */
+
+    return hdrsize;
+}
+
+void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, 
+                    int has_extra_data)
+{
+    int id;
+
+    id = get_le16(pb);
+    codec->codec_type = CODEC_TYPE_AUDIO;
+    codec->codec_tag = id;
+    codec->fourcc = id;
+    codec->channels = get_le16(pb);
+    codec->sample_rate = get_le32(pb);
+    codec->bit_rate = get_le32(pb) * 8;
+    codec->block_align = get_le16(pb);
+    codec->frame_bits = get_le16(pb); /* bits per sample */
+    codec->codec_id = wav_codec_get_id(id, codec->frame_bits);
+    if (has_extra_data) {
+	codec->extradata_size = get_le16(pb);
+	if (codec->extradata_size > 0) {
+            codec->extradata = av_mallocz(codec->extradata_size);
+            get_buffer(pb, codec->extradata, codec->extradata_size);
+        }
+    }
+}
+
+
+int wav_codec_get_id(unsigned int tag, int bps)
+{
+    int id;
+    id = codec_get_id(codec_wav_tags, tag);
+    if (id <= 0)
+        return id;
+    /* handle specific u8 codec */
+    if (id == CODEC_ID_PCM_S16LE && bps == 8)
+        id = CODEC_ID_PCM_U8;
+    return id;
+}
+
+typedef struct {
+    offset_t data;
+} WAVContext;
+
+static int wav_write_header(AVFormatContext *s)
+{
+    WAVContext *wav = s->priv_data;
+    ByteIOContext *pb = &s->pb;
+    offset_t fmt;
+
+    put_tag(pb, "RIFF");
+    put_le32(pb, 0); /* file length */
+    put_tag(pb, "WAVE");
+
+    /* format header */
+    fmt = start_tag(pb, "fmt ");
+    if (put_wav_header(pb, &s->streams[0]->codec) < 0) {
+        av_free(wav);
+        return -1;
+    }
+    end_tag(pb, fmt);
+
+    /* data header */
+    wav->data = start_tag(pb, "data");
+    
+    put_flush_packet(pb);
+
+    return 0;
+}
+
+static int wav_write_packet(AVFormatContext *s, int stream_index_ptr,
+                           UINT8 *buf, int size, int force_pts)
+{
+    ByteIOContext *pb = &s->pb;
+    put_buffer(pb, buf, size);
+    return 0;
+}
+
+static int wav_write_trailer(AVFormatContext *s)
+{
+    ByteIOContext *pb = &s->pb;
+    WAVContext *wav = s->priv_data;
+    offset_t file_size;
+
+    if (!url_is_streamed(&s->pb)) {
+        end_tag(pb, wav->data);
+
+        /* update file size */
+        file_size = url_ftell(pb);
+        url_fseek(pb, 4, SEEK_SET);
+        put_le32(pb, (UINT32)(file_size - 8));
+        url_fseek(pb, file_size, SEEK_SET);
+
+        put_flush_packet(pb);
+    }
+    return 0;
+}
+
+/* return the size of the found tag */
+/* XXX: > 2GB ? */
+static int find_tag(ByteIOContext *pb, UINT32 tag1)
+{
+    unsigned int tag;
+    int size;
+
+    for(;;) {
+        if (url_feof(pb))
+            return -1;
+        tag = get_le32(pb);
+        size = get_le32(pb);
+        if (tag == tag1)
+            break;
+        url_fseek(pb, size, SEEK_CUR);
+    }
+    if (size < 0)
+        size = 0x7fffffff;
+    return size;
+}
+
+static int wav_probe(AVProbeData *p)
+{
+    /* check file header */
+    if (p->buf_size <= 32)
+        return 0;
+    if (p->buf[0] == 'R' && p->buf[1] == 'I' &&
+        p->buf[2] == 'F' && p->buf[3] == 'F' &&
+        p->buf[8] == 'W' && p->buf[9] == 'A' &&
+        p->buf[10] == 'V' && p->buf[11] == 'E')
+        return AVPROBE_SCORE_MAX;
+    else
+        return 0;
+}
+
+/* wav input */
+static int wav_read_header(AVFormatContext *s,
+                           AVFormatParameters *ap)
+{
+    int size;
+    unsigned int tag;
+    ByteIOContext *pb = &s->pb;
+    AVStream *st;
+
+    /* check RIFF header */
+    tag = get_le32(pb);
+
+    if (tag != MKTAG('R', 'I', 'F', 'F'))
+        return -1;
+    get_le32(pb); /* file size */
+    tag = get_le32(pb);
+    if (tag != MKTAG('W', 'A', 'V', 'E'))
+        return -1;
+    
+    /* parse fmt header */
+    size = find_tag(pb, MKTAG('f', 'm', 't', ' '));
+    if (size < 0)
+        return -1;
+    st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR_NOMEM;
+
+    get_wav_header(pb, &st->codec, (size >= 18));
+    
+    size = find_tag(pb, MKTAG('d', 'a', 't', 'a'));
+    if (size < 0)
+        return -1;
+    return 0;
+}
+
+#define MAX_SIZE 4096
+
+static int wav_read_packet(AVFormatContext *s,
+                           AVPacket *pkt)
+{
+    int ret;
+
+    if (url_feof(&s->pb))
+        return -EIO;
+    if (av_new_packet(pkt, MAX_SIZE))
+        return -EIO;
+    pkt->stream_index = 0;
+
+    ret = get_buffer(&s->pb, pkt->data, pkt->size);
+    if (ret < 0)
+        av_free_packet(pkt);
+    /* note: we need to modify the packet size here to handle the last
+       packet */
+    pkt->size = ret;
+    return ret;
+}
+
+static int wav_read_close(AVFormatContext *s)
+{
+    return 0;
+}
+
+static AVInputFormat wav_iformat = {
+    "wav",
+    "wav format",
+    0,
+    wav_probe,
+    wav_read_header,
+    wav_read_packet,
+    wav_read_close,
+};
+
+static AVOutputFormat wav_oformat = {
+    "wav",
+    "wav format",
+    "audio/x-wav",
+    "wav",
+    sizeof(WAVContext),
+    CODEC_ID_PCM_S16LE,
+    CODEC_ID_NONE,
+    wav_write_header,
+    wav_write_packet,
+    wav_write_trailer,
+};
+
+int wav_init(void)
+{
+    av_register_input_format(&wav_iformat);
+    av_register_output_format(&wav_oformat);
+    return 0;
+}