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FFmpeg/libavcodec/proresenc_kostya.c

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/*
* Apple ProRes encoder
*
* Copyright (c) 2011 Anatoliy Wasserman
* Copyright (c) 2012 Konstantin Shishkov
*
* This file is part of FFmpeg.
*
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/mem.h"
#include "libavutil/mem_internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
#include "fdctdsp.h"
#include "put_bits.h"
#include "profiles.h"
#include "bytestream.h"
#include "proresdata.h"
#include "proresenc_kostya_common.h"
#define TRELLIS_WIDTH 16
#define SCORE_LIMIT INT_MAX / 2
struct TrellisNode {
int prev_node;
int quant;
int bits;
int score;
};
typedef struct ProresThreadData {
DECLARE_ALIGNED(16, int16_t, blocks)[MAX_PLANES][64 * 4 * MAX_MBS_PER_SLICE];
DECLARE_ALIGNED(16, uint16_t, emu_buf)[16 * 16];
int16_t custom_q[64];
int16_t custom_chroma_q[64];
struct TrellisNode *nodes;
} ProresThreadData;
static void get_slice_data(ProresContext *ctx, const uint16_t *src,
ptrdiff_t linesize, int x, int y, int w, int h,
int16_t *blocks, uint16_t *emu_buf,
int mbs_per_slice, int blocks_per_mb, int is_chroma)
{
const uint16_t *esrc;
const int mb_width = 4 * blocks_per_mb;
ptrdiff_t elinesize;
int i, j, k;
for (i = 0; i < mbs_per_slice; i++, src += mb_width) {
if (x >= w) {
memset(blocks, 0, 64 * (mbs_per_slice - i) * blocks_per_mb
* sizeof(*blocks));
return;
}
if (x + mb_width <= w && y + 16 <= h) {
esrc = src;
elinesize = linesize;
} else {
int bw, bh, pix;
esrc = emu_buf;
elinesize = 16 * sizeof(*emu_buf);
bw = FFMIN(w - x, mb_width);
bh = FFMIN(h - y, 16);
for (j = 0; j < bh; j++) {
memcpy(emu_buf + j * 16,
(const uint8_t*)src + j * linesize,
bw * sizeof(*src));
pix = emu_buf[j * 16 + bw - 1];
for (k = bw; k < mb_width; k++)
emu_buf[j * 16 + k] = pix;
}
for (; j < 16; j++)
memcpy(emu_buf + j * 16,
emu_buf + (bh - 1) * 16,
mb_width * sizeof(*emu_buf));
}
if (!is_chroma) {
ctx->fdct(&ctx->fdsp, esrc, elinesize, blocks);
blocks += 64;
if (blocks_per_mb > 2) {
ctx->fdct(&ctx->fdsp, esrc + 8, elinesize, blocks);
blocks += 64;
}
ctx->fdct(&ctx->fdsp, esrc + elinesize * 4, elinesize, blocks);
blocks += 64;
if (blocks_per_mb > 2) {
ctx->fdct(&ctx->fdsp, esrc + elinesize * 4 + 8, elinesize, blocks);
blocks += 64;
}
} else {
ctx->fdct(&ctx->fdsp, esrc, elinesize, blocks);
blocks += 64;
ctx->fdct(&ctx->fdsp, esrc + elinesize * 4, elinesize, blocks);
blocks += 64;
if (blocks_per_mb > 2) {
ctx->fdct(&ctx->fdsp, esrc + 8, elinesize, blocks);
blocks += 64;
ctx->fdct(&ctx->fdsp, esrc + elinesize * 4 + 8, elinesize, blocks);
blocks += 64;
}
}
x += mb_width;
}
}
static void get_alpha_data(ProresContext *ctx, const uint16_t *src,
ptrdiff_t linesize, int x, int y, int w, int h,
uint16_t *blocks, int mbs_per_slice, int abits)
{
const int slice_width = 16 * mbs_per_slice;
int i, j, copy_w, copy_h;
copy_w = FFMIN(w - x, slice_width);
copy_h = FFMIN(h - y, 16);
for (i = 0; i < copy_h; i++) {
memcpy(blocks, src, copy_w * sizeof(*src));
if (abits == 8)
for (j = 0; j < copy_w; j++)
blocks[j] >>= 2;
else
for (j = 0; j < copy_w; j++)
blocks[j] = (blocks[j] << 6) | (blocks[j] >> 4);
for (j = copy_w; j < slice_width; j++)
blocks[j] = blocks[copy_w - 1];
blocks += slice_width;
src += linesize >> 1;
}
for (; i < 16; i++) {
memcpy(blocks, blocks - slice_width, slice_width * sizeof(*blocks));
blocks += slice_width;
}
}
/**
* Write an unsigned rice/exp golomb codeword.
*/
static inline void encode_vlc_codeword(PutBitContext *pb, unsigned codebook, int val)
{
unsigned int rice_order, exp_order, switch_bits, switch_val;
int exponent;
/* number of prefix bits to switch between Rice and expGolomb */
switch_bits = (codebook & 3) + 1;
rice_order = codebook >> 5; /* rice code order */
exp_order = (codebook >> 2) & 7; /* exp golomb code order */
switch_val = switch_bits << rice_order;
if (val >= switch_val) {
val -= switch_val - (1 << exp_order);
exponent = av_log2(val);
put_bits(pb, exponent - exp_order + switch_bits, 0);
put_bits(pb, exponent + 1, val);
} else {
exponent = val >> rice_order;
if (exponent)
put_bits(pb, exponent, 0);
put_bits(pb, 1, 1);
if (rice_order)
put_sbits(pb, rice_order, val);
}
}
#define GET_SIGN(x) ((x) >> 31)
#define MAKE_CODE(x) (((x) * 2) ^ GET_SIGN(x))
static void encode_dcs(PutBitContext *pb, int16_t *blocks,
int blocks_per_slice, int scale)
{
int i;
int codebook = 5, code, dc, prev_dc, delta, sign, new_sign;
prev_dc = (blocks[0] - 0x4000) / scale;
encode_vlc_codeword(pb, FIRST_DC_CB, MAKE_CODE(prev_dc));
sign = 0;
blocks += 64;
for (i = 1; i < blocks_per_slice; i++, blocks += 64) {
dc = (blocks[0] - 0x4000) / scale;
delta = dc - prev_dc;
new_sign = GET_SIGN(delta);
delta = (delta ^ sign) - sign;
code = MAKE_CODE(delta);
encode_vlc_codeword(pb, ff_prores_dc_codebook[codebook], code);
codebook = FFMIN(code, 6);
sign = new_sign;
prev_dc = dc;
}
}
static void encode_acs(PutBitContext *pb, int16_t *blocks,
int blocks_per_slice,
const uint8_t *scan, const int16_t *qmat)
{
int idx, i;
int prev_run = 4;
int prev_level = 2;
int run = 0, level;
int max_coeffs, abs_level;
max_coeffs = blocks_per_slice << 6;
for (i = 1; i < 64; i++) {
for (idx = scan[i]; idx < max_coeffs; idx += 64) {
level = blocks[idx] / qmat[scan[i]];
if (level) {
abs_level = FFABS(level);
encode_vlc_codeword(pb, ff_prores_run_to_cb[prev_run], run);
encode_vlc_codeword(pb, ff_prores_level_to_cb[prev_level], abs_level - 1);
put_sbits(pb, 1, GET_SIGN(level));
prev_run = FFMIN(run, 15);
prev_level = FFMIN(abs_level, 9);
run = 0;
} else {
run++;
}
}
}
}
static void encode_slice_plane(ProresContext *ctx, PutBitContext *pb,
const uint16_t *src, ptrdiff_t linesize,
int mbs_per_slice, int16_t *blocks,
int blocks_per_mb,
const int16_t *qmat)
{
int blocks_per_slice = mbs_per_slice * blocks_per_mb;
encode_dcs(pb, blocks, blocks_per_slice, qmat[0]);
encode_acs(pb, blocks, blocks_per_slice, ctx->scantable, qmat);
}
static void put_alpha_diff(PutBitContext *pb, int cur, int prev, int abits)
{
const int dbits = (abits == 8) ? 4 : 7;
const int dsize = 1 << dbits - 1;
int diff = cur - prev;
diff = av_zero_extend(diff, abits);
if (diff >= (1 << abits) - dsize)
diff -= 1 << abits;
if (diff < -dsize || diff > dsize || !diff) {
put_bits(pb, 1, 1);
put_bits(pb, abits, diff);
} else {
put_bits(pb, 1, 0);
put_bits(pb, dbits - 1, FFABS(diff) - 1);
put_bits(pb, 1, diff < 0);
}
}
static void put_alpha_run(PutBitContext *pb, int run)
{
if (run) {
put_bits(pb, 1, 0);
if (run < 0x10)
put_bits(pb, 4, run);
else
put_bits(pb, 15, run);
} else {
put_bits(pb, 1, 1);
}
}
// todo alpha quantisation for high quants
static void encode_alpha_plane(ProresContext *ctx, PutBitContext *pb,
int mbs_per_slice, uint16_t *blocks,
int quant)
{
const int abits = ctx->alpha_bits;
const int mask = (1 << abits) - 1;
const int num_coeffs = mbs_per_slice * 256;
int prev = mask, cur;
int idx = 0;
int run = 0;
cur = blocks[idx++];
put_alpha_diff(pb, cur, prev, abits);
prev = cur;
do {
cur = blocks[idx++];
if (cur != prev) {
put_alpha_run (pb, run);
put_alpha_diff(pb, cur, prev, abits);
prev = cur;
run = 0;
} else {
run++;
}
} while (idx < num_coeffs);
put_alpha_run(pb, run);
}
static int encode_slice(AVCodecContext *avctx, const AVFrame *pic,
PutBitContext *pb,
int sizes[4], int x, int y, int quant,
int mbs_per_slice)
{
ProresContext *ctx = avctx->priv_data;
int i, xp, yp;
int total_size = 0;
const uint16_t *src;
int num_cblocks, pwidth, line_add;
ptrdiff_t linesize;
int is_chroma;
uint16_t *qmat;
uint16_t *qmat_chroma;
if (ctx->pictures_per_frame == 1)
line_add = 0;
else
line_add = ctx->cur_picture_idx ^ !(pic->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST);
if (ctx->force_quant) {
qmat = ctx->quants[0];
qmat_chroma = ctx->quants_chroma[0];
} else if (quant < MAX_STORED_Q) {
qmat = ctx->quants[quant];
qmat_chroma = ctx->quants_chroma[quant];
} else {
qmat = ctx->custom_q;
qmat_chroma = ctx->custom_chroma_q;
for (i = 0; i < 64; i++) {
qmat[i] = ctx->quant_mat[i] * quant;
qmat_chroma[i] = ctx->quant_chroma_mat[i] * quant;
}
}
for (i = 0; i < ctx->num_planes; i++) {
is_chroma = (i == 1 || i == 2);
if (!is_chroma || ctx->chroma_factor == CFACTOR_Y444) {
xp = x << 4;
yp = y << 4;
num_cblocks = 4;
pwidth = avctx->width;
} else {
xp = x << 3;
yp = y << 4;
num_cblocks = 2;
pwidth = avctx->width >> 1;
}
linesize = pic->linesize[i] * ctx->pictures_per_frame;
src = (const uint16_t*)(pic->data[i] + yp * linesize +
line_add * pic->linesize[i]) + xp;
if (i < 3) {
get_slice_data(ctx, src, linesize, xp, yp,
pwidth, avctx->height / ctx->pictures_per_frame,
ctx->blocks[0], ctx->emu_buf,
mbs_per_slice, num_cblocks, is_chroma);
if (!is_chroma) {/* luma quant */
encode_slice_plane(ctx, pb, src, linesize,
mbs_per_slice, ctx->blocks[0],
num_cblocks, qmat);
} else { /* chroma plane */
encode_slice_plane(ctx, pb, src, linesize,
mbs_per_slice, ctx->blocks[0],
num_cblocks, qmat_chroma);
}
} else {
get_alpha_data(ctx, src, linesize, xp, yp,
pwidth, avctx->height / ctx->pictures_per_frame,
ctx->blocks[0], mbs_per_slice, ctx->alpha_bits);
encode_alpha_plane(ctx, pb, mbs_per_slice, ctx->blocks[0], quant);
}
flush_put_bits(pb);
sizes[i] = put_bytes_output(pb) - total_size;
total_size = put_bytes_output(pb);
}
return total_size;
}
static inline int estimate_vlc(unsigned codebook, int val)
{
unsigned int rice_order, exp_order, switch_bits, switch_val;
int exponent;
/* number of prefix bits to switch between Rice and expGolomb */
switch_bits = (codebook & 3) + 1;
rice_order = codebook >> 5; /* rice code order */
exp_order = (codebook >> 2) & 7; /* exp golomb code order */
switch_val = switch_bits << rice_order;
if (val >= switch_val) {
val -= switch_val - (1 << exp_order);
exponent = av_log2(val);
return exponent * 2 - exp_order + switch_bits + 1;
} else {
return (val >> rice_order) + rice_order + 1;
}
}
static int estimate_dcs(int *error, int16_t *blocks, int blocks_per_slice,
int scale)
{
int i;
int codebook = 5, code, dc, prev_dc, delta, sign, new_sign;
int bits;
prev_dc = (blocks[0] - 0x4000) / scale;
bits = estimate_vlc(FIRST_DC_CB, MAKE_CODE(prev_dc));
sign = 0;
blocks += 64;
*error += FFABS(blocks[0] - 0x4000) % scale;
for (i = 1; i < blocks_per_slice; i++, blocks += 64) {
dc = (blocks[0] - 0x4000) / scale;
*error += FFABS(blocks[0] - 0x4000) % scale;
delta = dc - prev_dc;
new_sign = GET_SIGN(delta);
delta = (delta ^ sign) - sign;
code = MAKE_CODE(delta);
bits += estimate_vlc(ff_prores_dc_codebook[codebook], code);
codebook = FFMIN(code, 6);
sign = new_sign;
prev_dc = dc;
}
return bits;
}
static int estimate_acs(int *error, int16_t *blocks, int blocks_per_slice,
const uint8_t *scan, const int16_t *qmat)
{
int idx, i;
int prev_run = 4;
int prev_level = 2;
int run, level;
int max_coeffs, abs_level;
int bits = 0;
max_coeffs = blocks_per_slice << 6;
run = 0;
for (i = 1; i < 64; i++) {
for (idx = scan[i]; idx < max_coeffs; idx += 64) {
level = blocks[idx] / qmat[scan[i]];
*error += FFABS(blocks[idx]) % qmat[scan[i]];
if (level) {
abs_level = FFABS(level);
bits += estimate_vlc(ff_prores_run_to_cb[prev_run], run);
bits += estimate_vlc(ff_prores_level_to_cb[prev_level],
abs_level - 1) + 1;
prev_run = FFMIN(run, 15);
prev_level = FFMIN(abs_level, 9);
run = 0;
} else {
run++;
}
}
}
return bits;
}
static int estimate_slice_plane(ProresContext *ctx, int *error, int plane,
const uint16_t *src, ptrdiff_t linesize,
int mbs_per_slice,
int blocks_per_mb,
const int16_t *qmat, ProresThreadData *td)
{
int blocks_per_slice;
int bits;
blocks_per_slice = mbs_per_slice * blocks_per_mb;
bits = estimate_dcs(error, td->blocks[plane], blocks_per_slice, qmat[0]);
bits += estimate_acs(error, td->blocks[plane], blocks_per_slice, ctx->scantable, qmat);
return FFALIGN(bits, 8);
}
static int est_alpha_diff(int cur, int prev, int abits)
{
const int dbits = (abits == 8) ? 4 : 7;
const int dsize = 1 << dbits - 1;
int diff = cur - prev;
diff = av_zero_extend(diff, abits);
if (diff >= (1 << abits) - dsize)
diff -= 1 << abits;
if (diff < -dsize || diff > dsize || !diff)
return abits + 1;
else
return dbits + 1;
}
static int estimate_alpha_plane(ProresContext *ctx,
const uint16_t *src, ptrdiff_t linesize,
int mbs_per_slice, int16_t *blocks)
{
const int abits = ctx->alpha_bits;
const int mask = (1 << abits) - 1;
const int num_coeffs = mbs_per_slice * 256;
int prev = mask, cur;
int idx = 0;
int run = 0;
int bits;
cur = blocks[idx++];
bits = est_alpha_diff(cur, prev, abits);
prev = cur;
do {
cur = blocks[idx++];
if (cur != prev) {
if (!run)
bits++;
else if (run < 0x10)
bits += 4;
else
bits += 15;
bits += est_alpha_diff(cur, prev, abits);
prev = cur;
run = 0;
} else {
run++;
}
} while (idx < num_coeffs);
if (run) {
if (run < 0x10)
bits += 4;
else
bits += 15;
}
return bits;
}
static int find_slice_quant(AVCodecContext *avctx,
int trellis_node, int x, int y, int mbs_per_slice,
ProresThreadData *td)
{
ProresContext *ctx = avctx->priv_data;
int i, q, pq, xp, yp;
const uint16_t *src;
int num_cblocks[MAX_PLANES], pwidth;
int is_chroma[MAX_PLANES];
const int min_quant = ctx->profile_info->min_quant;
const int max_quant = ctx->profile_info->max_quant;
int error, bits, bits_limit;
int mbs, prev, cur, new_score;
int slice_bits[TRELLIS_WIDTH], slice_score[TRELLIS_WIDTH];
int overquant;
uint16_t *qmat;
uint16_t *qmat_chroma;
int linesize[4], line_add;
int alpha_bits = 0;
if (ctx->pictures_per_frame == 1)
line_add = 0;
else
line_add = ctx->cur_picture_idx ^ !(ctx->pic->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST);
mbs = x + mbs_per_slice;
for (i = 0; i < ctx->num_planes; i++) {
is_chroma[i] = (i == 1 || i == 2);
if (!is_chroma[i] || ctx->chroma_factor == CFACTOR_Y444) {
xp = x << 4;
yp = y << 4;
num_cblocks[i] = 4;
pwidth = avctx->width;
} else {
xp = x << 3;
yp = y << 4;
num_cblocks[i] = 2;
pwidth = avctx->width >> 1;
}
linesize[i] = ctx->pic->linesize[i] * ctx->pictures_per_frame;
src = (const uint16_t *)(ctx->pic->data[i] + yp * linesize[i] +
line_add * ctx->pic->linesize[i]) + xp;
if (i < 3) {
get_slice_data(ctx, src, linesize[i], xp, yp,
pwidth, avctx->height / ctx->pictures_per_frame,
td->blocks[i], td->emu_buf,
mbs_per_slice, num_cblocks[i], is_chroma[i]);
} else {
get_alpha_data(ctx, src, linesize[i], xp, yp,
pwidth, avctx->height / ctx->pictures_per_frame,
td->blocks[i], mbs_per_slice, ctx->alpha_bits);
}
}
for (q = min_quant; q < max_quant + 2; q++) {
td->nodes[trellis_node + q].prev_node = -1;
td->nodes[trellis_node + q].quant = q;
}
if (ctx->alpha_bits)
alpha_bits = estimate_alpha_plane(ctx, src, linesize[3],
mbs_per_slice, td->blocks[3]);
// todo: maybe perform coarser quantising to fit into frame size when needed
for (q = min_quant; q <= max_quant; q++) {
bits = alpha_bits;
error = 0;
bits += estimate_slice_plane(ctx, &error, 0,
src, linesize[0],
mbs_per_slice,
num_cblocks[0],
ctx->quants[q], td); /* estimate luma plane */
for (i = 1; i < ctx->num_planes - !!ctx->alpha_bits; i++) { /* estimate chroma plane */
bits += estimate_slice_plane(ctx, &error, i,
src, linesize[i],
mbs_per_slice,
num_cblocks[i],
ctx->quants_chroma[q], td);
}
if (bits > 65000 * 8)
error = SCORE_LIMIT;
slice_bits[q] = bits;
slice_score[q] = error;
}
if (slice_bits[max_quant] <= ctx->bits_per_mb * mbs_per_slice) {
slice_bits[max_quant + 1] = slice_bits[max_quant];
slice_score[max_quant + 1] = slice_score[max_quant] + 1;
overquant = max_quant;
} else {
for (q = max_quant + 1; q < 128; q++) {
bits = alpha_bits;
error = 0;
if (q < MAX_STORED_Q) {
qmat = ctx->quants[q];
qmat_chroma = ctx->quants_chroma[q];
} else {
qmat = td->custom_q;
qmat_chroma = td->custom_chroma_q;
for (i = 0; i < 64; i++) {
qmat[i] = ctx->quant_mat[i] * q;
qmat_chroma[i] = ctx->quant_chroma_mat[i] * q;
}
}
bits += estimate_slice_plane(ctx, &error, 0,
src, linesize[0],
mbs_per_slice,
num_cblocks[0],
qmat, td);/* estimate luma plane */
for (i = 1; i < ctx->num_planes - !!ctx->alpha_bits; i++) { /* estimate chroma plane */
bits += estimate_slice_plane(ctx, &error, i,
src, linesize[i],
mbs_per_slice,
num_cblocks[i],
qmat_chroma, td);
}
if (bits <= ctx->bits_per_mb * mbs_per_slice)
break;
}
slice_bits[max_quant + 1] = bits;
slice_score[max_quant + 1] = error;
overquant = q;
}
td->nodes[trellis_node + max_quant + 1].quant = overquant;
bits_limit = mbs * ctx->bits_per_mb;
for (pq = min_quant; pq < max_quant + 2; pq++) {
prev = trellis_node - TRELLIS_WIDTH + pq;
for (q = min_quant; q < max_quant + 2; q++) {
cur = trellis_node + q;
bits = td->nodes[prev].bits + slice_bits[q];
error = slice_score[q];
if (bits > bits_limit)
error = SCORE_LIMIT;
if (td->nodes[prev].score < SCORE_LIMIT && error < SCORE_LIMIT)
new_score = td->nodes[prev].score + error;
else
new_score = SCORE_LIMIT;
if (td->nodes[cur].prev_node == -1 ||
td->nodes[cur].score >= new_score) {
td->nodes[cur].bits = bits;
td->nodes[cur].score = new_score;
td->nodes[cur].prev_node = prev;
}
}
}
error = td->nodes[trellis_node + min_quant].score;
pq = trellis_node + min_quant;
for (q = min_quant + 1; q < max_quant + 2; q++) {
if (td->nodes[trellis_node + q].score <= error) {
error = td->nodes[trellis_node + q].score;
pq = trellis_node + q;
}
}
return pq;
}
static int find_quant_thread(AVCodecContext *avctx, void *arg,
int jobnr, int threadnr)
{
ProresContext *ctx = avctx->priv_data;
ProresThreadData *td = ctx->tdata + threadnr;
int mbs_per_slice = ctx->mbs_per_slice;
int x, y = jobnr, mb, q = 0;
for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) {
while (ctx->mb_width - x < mbs_per_slice)
mbs_per_slice >>= 1;
q = find_slice_quant(avctx,
(mb + 1) * TRELLIS_WIDTH, x, y,
mbs_per_slice, td);
}
for (x = ctx->slices_width - 1; x >= 0; x--) {
ctx->slice_q[x + y * ctx->slices_width] = td->nodes[q].quant;
q = td->nodes[q].prev_node;
}
return 0;
}
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pic, int *got_packet)
{
ProresContext *ctx = avctx->priv_data;
uint8_t *orig_buf, *buf, *slice_hdr, *slice_sizes, *tmp;
uint8_t *picture_size_pos;
PutBitContext pb;
int x, y, i, mb, q = 0;
int sizes[4] = { 0 };
int slice_hdr_size = 2 * ctx->num_planes;
int frame_size, picture_size, slice_size;
int pkt_size, ret;
int max_slice_size = (ctx->frame_size_upper_bound - 200) / (ctx->pictures_per_frame * ctx->slices_per_picture + 1);
uint8_t frame_flags;
ctx->pic = pic;
pkt_size = ctx->frame_size_upper_bound;
if ((ret = ff_alloc_packet(avctx, pkt, pkt_size + FF_INPUT_BUFFER_MIN_SIZE)) < 0)
return ret;
orig_buf = pkt->data;
// frame atom
orig_buf += 4; // frame size
bytestream_put_be32 (&orig_buf, FRAME_ID); // frame container ID
buf = orig_buf;
// frame header
tmp = buf;
buf += 2; // frame header size will be stored here
bytestream_put_be16 (&buf, ctx->chroma_factor != CFACTOR_Y422 || ctx->alpha_bits ? 1 : 0);
bytestream_put_buffer(&buf, ctx->vendor, 4);
bytestream_put_be16 (&buf, avctx->width);
bytestream_put_be16 (&buf, avctx->height);
frame_flags = ctx->chroma_factor << 6;
if (avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT)
frame_flags |= (pic->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) ? 0x04 : 0x08;
bytestream_put_byte (&buf, frame_flags);
bytestream_put_byte (&buf, 0); // reserved
bytestream_put_byte (&buf, pic->color_primaries);
bytestream_put_byte (&buf, pic->color_trc);
bytestream_put_byte (&buf, pic->colorspace);
bytestream_put_byte (&buf, ctx->alpha_bits >> 3);
bytestream_put_byte (&buf, 0); // reserved
if (ctx->quant_sel != QUANT_MAT_DEFAULT) {
bytestream_put_byte (&buf, 0x03); // matrix flags - both matrices are present
bytestream_put_buffer(&buf, ctx->quant_mat, 64); // luma quantisation matrix
bytestream_put_buffer(&buf, ctx->quant_chroma_mat, 64); // chroma quantisation matrix
} else {
bytestream_put_byte (&buf, 0x00); // matrix flags - default matrices are used
}
bytestream_put_be16 (&tmp, buf - orig_buf); // write back frame header size
for (ctx->cur_picture_idx = 0;
ctx->cur_picture_idx < ctx->pictures_per_frame;
ctx->cur_picture_idx++) {
// picture header
picture_size_pos = buf + 1;
bytestream_put_byte (&buf, 0x40); // picture header size (in bits)
buf += 4; // picture data size will be stored here
bytestream_put_be16 (&buf, ctx->slices_per_picture);
bytestream_put_byte (&buf, av_log2(ctx->mbs_per_slice) << 4); // slice width and height in MBs
// seek table - will be filled during slice encoding
slice_sizes = buf;
buf += ctx->slices_per_picture * 2;
// slices
if (!ctx->force_quant) {
ret = avctx->execute2(avctx, find_quant_thread, NULL, NULL,
ctx->mb_height);
if (ret)
return ret;
}
for (y = 0; y < ctx->mb_height; y++) {
int mbs_per_slice = ctx->mbs_per_slice;
for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) {
q = ctx->force_quant ? ctx->force_quant
: ctx->slice_q[mb + y * ctx->slices_width];
while (ctx->mb_width - x < mbs_per_slice)
mbs_per_slice >>= 1;
bytestream_put_byte(&buf, slice_hdr_size << 3);
slice_hdr = buf;
buf += slice_hdr_size - 1;
if (pkt_size <= buf - orig_buf + 2 * max_slice_size) {
uint8_t *start = pkt->data;
// Recompute new size according to max_slice_size
// and deduce delta
int delta = 200 + (ctx->pictures_per_frame *
ctx->slices_per_picture + 1) *
max_slice_size - pkt_size;
delta = FFMAX(delta, 2 * max_slice_size);
ctx->frame_size_upper_bound += delta;
if (!ctx->warn) {
avpriv_request_sample(avctx,
"Packet too small: is %i,"
" needs %i (slice: %i). "
"Correct allocation",
pkt_size, delta, max_slice_size);
ctx->warn = 1;
}
ret = av_grow_packet(pkt, delta);
if (ret < 0)
return ret;
pkt_size += delta;
orig_buf = pkt->data + (orig_buf - start);
buf = pkt->data + (buf - start);
picture_size_pos = pkt->data + (picture_size_pos - start);
slice_sizes = pkt->data + (slice_sizes - start);
slice_hdr = pkt->data + (slice_hdr - start);
tmp = pkt->data + (tmp - start);
}
init_put_bits(&pb, buf, (pkt_size - (buf - orig_buf)));
ret = encode_slice(avctx, pic, &pb, sizes, x, y, q,
mbs_per_slice);
if (ret < 0)
return ret;
bytestream_put_byte(&slice_hdr, q);
slice_size = slice_hdr_size + sizes[ctx->num_planes - 1];
for (i = 0; i < ctx->num_planes - 1; i++) {
bytestream_put_be16(&slice_hdr, sizes[i]);
slice_size += sizes[i];
}
bytestream_put_be16(&slice_sizes, slice_size);
buf += slice_size - slice_hdr_size;
if (max_slice_size < slice_size)
max_slice_size = slice_size;
}
}
picture_size = buf - (picture_size_pos - 1);
bytestream_put_be32(&picture_size_pos, picture_size);
}
orig_buf -= 8;
frame_size = buf - orig_buf;
bytestream_put_be32(&orig_buf, frame_size);
pkt->size = frame_size;
*got_packet = 1;
return 0;
}
static av_cold int encode_close(AVCodecContext *avctx)
{
ProresContext *ctx = avctx->priv_data;
int i;
if (ctx->tdata) {
for (i = 0; i < avctx->thread_count; i++)
av_freep(&ctx->tdata[i].nodes);
}
av_freep(&ctx->tdata);
av_freep(&ctx->slice_q);
return 0;
}
static void prores_fdct(FDCTDSPContext *fdsp, const uint16_t *src,
ptrdiff_t linesize, int16_t *block)
{
int x, y;
const uint16_t *tsrc = src;
for (y = 0; y < 8; y++) {
for (x = 0; x < 8; x++)
block[y * 8 + x] = tsrc[x];
tsrc += linesize >> 1;
}
fdsp->fdct(block);
}
static av_cold int encode_init(AVCodecContext *avctx)
{
ProresContext *ctx = avctx->priv_data;
int err = 0, i, j, min_quant, max_quant;
err = ff_prores_kostya_encode_init(avctx, ctx, avctx->pix_fmt);
if (err < 0)
return err;
ctx->fdct = prores_fdct;
ff_fdctdsp_init(&ctx->fdsp, avctx);
if (!ctx->force_quant) {
min_quant = ctx->profile_info->min_quant;
max_quant = ctx->profile_info->max_quant;
ctx->slice_q = av_malloc_array(ctx->slices_per_picture, sizeof(*ctx->slice_q));
if (!ctx->slice_q)
return AVERROR(ENOMEM);
ctx->tdata = av_calloc(avctx->thread_count, sizeof(*ctx->tdata));
if (!ctx->tdata)
return AVERROR(ENOMEM);
for (j = 0; j < avctx->thread_count; j++) {
ctx->tdata[j].nodes = av_malloc_array(ctx->slices_width + 1,
TRELLIS_WIDTH
* sizeof(*ctx->tdata->nodes));
if (!ctx->tdata[j].nodes)
return AVERROR(ENOMEM);
for (i = min_quant; i < max_quant + 2; i++) {
ctx->tdata[j].nodes[i].prev_node = -1;
ctx->tdata[j].nodes[i].bits = 0;
ctx->tdata[j].nodes[i].score = 0;
}
}
}
return 0;
}
#define OFFSET(x) offsetof(ProresContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "mbs_per_slice", "macroblocks per slice", OFFSET(mbs_per_slice),
AV_OPT_TYPE_INT, { .i64 = 8 }, 1, MAX_MBS_PER_SLICE, VE },
{ "profile", NULL, OFFSET(profile), AV_OPT_TYPE_INT,
{ .i64 = PRORES_PROFILE_AUTO },
PRORES_PROFILE_AUTO, PRORES_PROFILE_4444XQ, VE, .unit = "profile" },
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_AUTO },
0, 0, VE, .unit = "profile" },
{ "proxy", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_PROXY },
0, 0, VE, .unit = "profile" },
{ "lt", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_LT },
0, 0, VE, .unit = "profile" },
{ "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_STANDARD },
0, 0, VE, .unit = "profile" },
{ "hq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_HQ },
0, 0, VE, .unit = "profile" },
{ "4444", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_4444 },
0, 0, VE, .unit = "profile" },
{ "4444xq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_4444XQ },
0, 0, VE, .unit = "profile" },
{ "vendor", "vendor ID", OFFSET(vendor),
AV_OPT_TYPE_STRING, { .str = "Lavc" }, 0, 0, VE },
{ "bits_per_mb", "desired bits per macroblock", OFFSET(bits_per_mb),
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8192, VE },
{ "quant_mat", "quantiser matrix", OFFSET(quant_sel), AV_OPT_TYPE_INT,
{ .i64 = -1 }, -1, QUANT_MAT_DEFAULT, VE, .unit = "quant_mat" },
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 },
0, 0, VE, .unit = "quant_mat" },
{ "proxy", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_PROXY },
0, 0, VE, .unit = "quant_mat" },
{ "lt", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_LT },
0, 0, VE, .unit = "quant_mat" },
{ "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_STANDARD },
0, 0, VE, .unit = "quant_mat" },
{ "hq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_HQ },
0, 0, VE, .unit = "quant_mat" },
{ "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_DEFAULT },
0, 0, VE, .unit = "quant_mat" },
{ "alpha_bits", "bits for alpha plane", OFFSET(alpha_bits), AV_OPT_TYPE_INT,
{ .i64 = 16 }, 0, 16, VE },
{ NULL }
};
static const AVClass proresenc_class = {
.class_name = "ProRes encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
const FFCodec ff_prores_ks_encoder = {
.p.name = "prores_ks",
CODEC_LONG_NAME("Apple ProRes (iCodec Pro)"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_PRORES,
.priv_data_size = sizeof(ProresContext),
.init = encode_init,
.close = encode_close,
FF_CODEC_ENCODE_CB(encode_frame),
.p.capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS |
AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
CODEC_PIXFMTS(AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUVA444P10),
.color_ranges = AVCOL_RANGE_MPEG,
.p.priv_class = &proresenc_class,
.p.profiles = NULL_IF_CONFIG_SMALL(ff_prores_profiles),
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
};
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