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6ba6db4f19
SMPTE-2094-50 is an upcoming standard that is close to being finalized. Define a side data type for carrying this metadata. And add functions for parsing and writing it. This is very similar to the handling of HDR10+ metadata. The spec is available here: https://github.com/SMPTE/st2094-50 Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
708 lines
27 KiB
C
708 lines
27 KiB
C
/**
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* Copyright (c) 2018 Mohammad Izadi <moh.izadi at gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avassert.h"
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#include "hdr_dynamic_metadata.h"
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#include "mem.h"
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#include "libavcodec/defs.h"
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#include "libavcodec/get_bits.h"
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#include "libavcodec/put_bits.h"
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static const int64_t luminance_den = 1;
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static const int32_t peak_luminance_den = 15;
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static const int64_t rgb_den = 100000;
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static const int32_t fraction_pixel_den = 1000;
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static const int32_t knee_point_den = 4095;
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static const int32_t bezier_anchor_den = 1023;
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static const int32_t saturation_weight_den = 8;
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AVDynamicHDRPlus *av_dynamic_hdr_plus_alloc(size_t *size)
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{
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AVDynamicHDRPlus *hdr_plus = av_mallocz(sizeof(AVDynamicHDRPlus));
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if (!hdr_plus)
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return NULL;
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if (size)
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*size = sizeof(*hdr_plus);
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return hdr_plus;
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}
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AVDynamicHDRPlus *av_dynamic_hdr_plus_create_side_data(AVFrame *frame)
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{
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AVFrameSideData *side_data = av_frame_new_side_data(frame,
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AV_FRAME_DATA_DYNAMIC_HDR_PLUS,
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sizeof(AVDynamicHDRPlus));
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if (!side_data)
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return NULL;
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memset(side_data->data, 0, sizeof(AVDynamicHDRPlus));
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return (AVDynamicHDRPlus *)side_data->data;
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}
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int av_dynamic_hdr_plus_from_t35(AVDynamicHDRPlus *s, const uint8_t *data,
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size_t size)
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{
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uint8_t padded_buf[AV_HDR_PLUS_MAX_PAYLOAD_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
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GetBitContext gbc, *gb = &gbc;
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int ret;
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if (!s)
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return AVERROR(ENOMEM);
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if (size > AV_HDR_PLUS_MAX_PAYLOAD_SIZE)
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return AVERROR(EINVAL);
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memcpy(padded_buf, data, size);
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// Zero-initialize the buffer padding to avoid overreads into uninitialized data.
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memset(padded_buf + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
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ret = init_get_bits8(gb, padded_buf, size);
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if (ret < 0)
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return ret;
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if (get_bits_left(gb) < 10)
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return AVERROR_INVALIDDATA;
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s->application_version = get_bits(gb, 8);
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s->num_windows = get_bits(gb, 2);
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if (s->num_windows < 1 || s->num_windows > 3) {
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return AVERROR_INVALIDDATA;
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}
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if (get_bits_left(gb) < ((19 * 8 + 1) * (s->num_windows - 1)))
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return AVERROR_INVALIDDATA;
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for (int w = 1; w < s->num_windows; w++) {
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// The corners are set to absolute coordinates here. They should be
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// converted to the relative coordinates (in [0, 1]) in the decoder.
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AVHDRPlusColorTransformParams *params = &s->params[w];
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params->window_upper_left_corner_x =
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(AVRational){get_bits(gb, 16), 1};
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params->window_upper_left_corner_y =
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(AVRational){get_bits(gb, 16), 1};
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params->window_lower_right_corner_x =
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(AVRational){get_bits(gb, 16), 1};
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params->window_lower_right_corner_y =
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(AVRational){get_bits(gb, 16), 1};
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params->center_of_ellipse_x = get_bits(gb, 16);
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params->center_of_ellipse_y = get_bits(gb, 16);
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params->rotation_angle = get_bits(gb, 8);
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params->semimajor_axis_internal_ellipse = get_bits(gb, 16);
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params->semimajor_axis_external_ellipse = get_bits(gb, 16);
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params->semiminor_axis_external_ellipse = get_bits(gb, 16);
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params->overlap_process_option = get_bits1(gb);
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}
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if (get_bits_left(gb) < 28)
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return AVERROR_INVALIDDATA;
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s->targeted_system_display_maximum_luminance =
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(AVRational){get_bits_long(gb, 27), luminance_den};
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s->targeted_system_display_actual_peak_luminance_flag = get_bits1(gb);
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if (s->targeted_system_display_actual_peak_luminance_flag) {
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int rows, cols;
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if (get_bits_left(gb) < 10)
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return AVERROR_INVALIDDATA;
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rows = get_bits(gb, 5);
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cols = get_bits(gb, 5);
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if (((rows < 2) || (rows > 25)) || ((cols < 2) || (cols > 25))) {
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return AVERROR_INVALIDDATA;
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}
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s->num_rows_targeted_system_display_actual_peak_luminance = rows;
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s->num_cols_targeted_system_display_actual_peak_luminance = cols;
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if (get_bits_left(gb) < (rows * cols * 4))
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return AVERROR_INVALIDDATA;
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for (int i = 0; i < rows; i++) {
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for (int j = 0; j < cols; j++) {
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s->targeted_system_display_actual_peak_luminance[i][j] =
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(AVRational){get_bits(gb, 4), peak_luminance_den};
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}
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}
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}
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for (int w = 0; w < s->num_windows; w++) {
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AVHDRPlusColorTransformParams *params = &s->params[w];
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if (get_bits_left(gb) < (3 * 17 + 17 + 4))
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return AVERROR_INVALIDDATA;
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for (int i = 0; i < 3; i++) {
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params->maxscl[i] =
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(AVRational){get_bits(gb, 17), rgb_den};
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}
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params->average_maxrgb =
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(AVRational){get_bits(gb, 17), rgb_den};
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params->num_distribution_maxrgb_percentiles = get_bits(gb, 4);
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if (get_bits_left(gb) <
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(params->num_distribution_maxrgb_percentiles * 24))
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return AVERROR_INVALIDDATA;
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for (int i = 0; i < params->num_distribution_maxrgb_percentiles; i++) {
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params->distribution_maxrgb[i].percentage = get_bits(gb, 7);
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params->distribution_maxrgb[i].percentile =
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(AVRational){get_bits(gb, 17), rgb_den};
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}
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if (get_bits_left(gb) < 10)
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return AVERROR_INVALIDDATA;
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params->fraction_bright_pixels = (AVRational){get_bits(gb, 10), fraction_pixel_den};
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}
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if (get_bits_left(gb) < 1)
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return AVERROR_INVALIDDATA;
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s->mastering_display_actual_peak_luminance_flag = get_bits1(gb);
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if (s->mastering_display_actual_peak_luminance_flag) {
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int rows, cols;
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if (get_bits_left(gb) < 10)
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return AVERROR_INVALIDDATA;
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rows = get_bits(gb, 5);
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cols = get_bits(gb, 5);
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if (((rows < 2) || (rows > 25)) || ((cols < 2) || (cols > 25))) {
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return AVERROR_INVALIDDATA;
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}
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s->num_rows_mastering_display_actual_peak_luminance = rows;
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s->num_cols_mastering_display_actual_peak_luminance = cols;
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if (get_bits_left(gb) < (rows * cols * 4))
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return AVERROR_INVALIDDATA;
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for (int i = 0; i < rows; i++) {
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for (int j = 0; j < cols; j++) {
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s->mastering_display_actual_peak_luminance[i][j] =
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(AVRational){get_bits(gb, 4), peak_luminance_den};
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}
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}
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}
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for (int w = 0; w < s->num_windows; w++) {
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AVHDRPlusColorTransformParams *params = &s->params[w];
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if (get_bits_left(gb) < 1)
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return AVERROR_INVALIDDATA;
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params->tone_mapping_flag = get_bits1(gb);
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if (params->tone_mapping_flag) {
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if (get_bits_left(gb) < 28)
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return AVERROR_INVALIDDATA;
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params->knee_point_x =
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(AVRational){get_bits(gb, 12), knee_point_den};
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params->knee_point_y =
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(AVRational){get_bits(gb, 12), knee_point_den};
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params->num_bezier_curve_anchors = get_bits(gb, 4);
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if (get_bits_left(gb) < (params->num_bezier_curve_anchors * 10))
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return AVERROR_INVALIDDATA;
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for (int i = 0; i < params->num_bezier_curve_anchors; i++) {
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params->bezier_curve_anchors[i] =
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(AVRational){get_bits(gb, 10), bezier_anchor_den};
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}
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}
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if (get_bits_left(gb) < 1)
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return AVERROR_INVALIDDATA;
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params->color_saturation_mapping_flag = get_bits1(gb);
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if (params->color_saturation_mapping_flag) {
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if (get_bits_left(gb) < 6)
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return AVERROR_INVALIDDATA;
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params->color_saturation_weight =
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(AVRational){get_bits(gb, 6), saturation_weight_den};
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}
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}
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return 0;
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}
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int av_dynamic_hdr_plus_to_t35(const AVDynamicHDRPlus *s, uint8_t **data, size_t *size)
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{
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uint8_t *buf;
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size_t size_bits, size_bytes;
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PutBitContext pbc, *pb = &pbc;
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if (!s)
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return AVERROR(EINVAL);
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if ((!data || *data) && !size)
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return AVERROR(EINVAL);
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/**
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* Buffer size per CTA-861-H p.253-254:
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* 48 header bits (excluded from the serialized payload)
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* 8 bits for application_mode
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* 2 bits for num_windows
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* 153 bits for window geometry, for each window above 1
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* 27 bits for targeted_system_display_maximum_luminance
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* 1-2511 bits for targeted system display peak luminance information
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* 82-442 bits per window for pixel distribution information
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* 1-2511 bits for mastering display peak luminance information
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* 1-179 bits per window for tonemapping information
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* 1-7 bits per window for color saturation mapping information
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* Total: 123-7249 bits, excluding trimmed header bits
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*/
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size_bits = 8;
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size_bits += 2;
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for (int w = 1; w < s->num_windows; w++)
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size_bits += 153;
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size_bits += 27;
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size_bits += 1;
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if (s->targeted_system_display_actual_peak_luminance_flag)
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size_bits += 10 +
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s->num_rows_targeted_system_display_actual_peak_luminance *
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s->num_cols_targeted_system_display_actual_peak_luminance * 4;
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for (int w = 0; w < s->num_windows; w++)
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size_bits += 72 + s->params[w].num_distribution_maxrgb_percentiles * 24 + 10;
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size_bits += 1;
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if (s->mastering_display_actual_peak_luminance_flag)
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size_bits += 10 +
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s->num_rows_mastering_display_actual_peak_luminance *
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s->num_cols_mastering_display_actual_peak_luminance * 4;
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for (int w = 0; w < s->num_windows; w++) {
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size_bits += 1;
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if (s->params[w].tone_mapping_flag)
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size_bits += 28 + s->params[w].num_bezier_curve_anchors * 10;
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size_bits += 1;
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if (s->params[w].color_saturation_mapping_flag)
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size_bits += 6;
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}
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size_bytes = (size_bits + 7) / 8;
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av_assert0(size_bytes <= AV_HDR_PLUS_MAX_PAYLOAD_SIZE);
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if (!data) {
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*size = size_bytes;
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return 0;
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} else if (*data) {
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if (*size < size_bytes)
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return AVERROR_BUFFER_TOO_SMALL;
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buf = *data;
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} else {
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buf = av_malloc(size_bytes);
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if (!buf)
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return AVERROR(ENOMEM);
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}
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init_put_bits(pb, buf, size_bytes);
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// application_mode is set to Application Version 1
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put_bits(pb, 8, 1);
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// Payload as per CTA-861-H p.253-254
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put_bits(pb, 2, s->num_windows);
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for (int w = 1; w < s->num_windows; w++) {
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put_bits(pb, 16, s->params[w].window_upper_left_corner_x.num / s->params[w].window_upper_left_corner_x.den);
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put_bits(pb, 16, s->params[w].window_upper_left_corner_y.num / s->params[w].window_upper_left_corner_y.den);
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put_bits(pb, 16, s->params[w].window_lower_right_corner_x.num / s->params[w].window_lower_right_corner_x.den);
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put_bits(pb, 16, s->params[w].window_lower_right_corner_y.num / s->params[w].window_lower_right_corner_y.den);
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put_bits(pb, 16, s->params[w].center_of_ellipse_x);
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put_bits(pb, 16, s->params[w].center_of_ellipse_y);
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put_bits(pb, 8, s->params[w].rotation_angle);
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put_bits(pb, 16, s->params[w].semimajor_axis_internal_ellipse);
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put_bits(pb, 16, s->params[w].semimajor_axis_external_ellipse);
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put_bits(pb, 16, s->params[w].semiminor_axis_external_ellipse);
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put_bits(pb, 1, s->params[w].overlap_process_option);
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}
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put_bits(pb, 27, s->targeted_system_display_maximum_luminance.num * luminance_den /
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s->targeted_system_display_maximum_luminance.den);
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put_bits(pb, 1, s->targeted_system_display_actual_peak_luminance_flag);
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if (s->targeted_system_display_actual_peak_luminance_flag) {
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put_bits(pb, 5, s->num_rows_targeted_system_display_actual_peak_luminance);
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put_bits(pb, 5, s->num_cols_targeted_system_display_actual_peak_luminance);
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for (int i = 0; i < s->num_rows_targeted_system_display_actual_peak_luminance; i++) {
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for (int j = 0; j < s->num_cols_targeted_system_display_actual_peak_luminance; j++)
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put_bits(pb, 4, s->targeted_system_display_actual_peak_luminance[i][j].num * peak_luminance_den /
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s->targeted_system_display_actual_peak_luminance[i][j].den);
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}
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}
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for (int w = 0; w < s->num_windows; w++) {
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for (int i = 0; i < 3; i++)
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put_bits(pb, 17, s->params[w].maxscl[i].num * rgb_den / s->params[w].maxscl[i].den);
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put_bits(pb, 17, s->params[w].average_maxrgb.num * rgb_den / s->params[w].average_maxrgb.den);
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put_bits(pb, 4, s->params[w].num_distribution_maxrgb_percentiles);
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for (int i = 0; i < s->params[w].num_distribution_maxrgb_percentiles; i++) {
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put_bits(pb, 7, s->params[w].distribution_maxrgb[i].percentage);
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put_bits(pb, 17, s->params[w].distribution_maxrgb[i].percentile.num * rgb_den /
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s->params[w].distribution_maxrgb[i].percentile.den);
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}
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put_bits(pb, 10, s->params[w].fraction_bright_pixels.num * fraction_pixel_den /
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s->params[w].fraction_bright_pixels.den);
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}
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put_bits(pb, 1, s->mastering_display_actual_peak_luminance_flag);
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if (s->mastering_display_actual_peak_luminance_flag) {
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put_bits(pb, 5, s->num_rows_mastering_display_actual_peak_luminance);
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put_bits(pb, 5, s->num_cols_mastering_display_actual_peak_luminance);
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for (int i = 0; i < s->num_rows_mastering_display_actual_peak_luminance; i++) {
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for (int j = 0; j < s->num_cols_mastering_display_actual_peak_luminance; j++)
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put_bits(pb, 4, s->mastering_display_actual_peak_luminance[i][j].num * peak_luminance_den /
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s->mastering_display_actual_peak_luminance[i][j].den);
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}
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}
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for (int w = 0; w < s->num_windows; w++) {
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put_bits(pb, 1, s->params[w].tone_mapping_flag);
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if (s->params[w].tone_mapping_flag) {
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put_bits(pb, 12, s->params[w].knee_point_x.num * knee_point_den / s->params[w].knee_point_x.den);
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put_bits(pb, 12, s->params[w].knee_point_y.num * knee_point_den / s->params[w].knee_point_y.den);
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put_bits(pb, 4, s->params[w].num_bezier_curve_anchors);
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for (int i = 0; i < s->params[w].num_bezier_curve_anchors; i++)
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put_bits(pb, 10, s->params[w].bezier_curve_anchors[i].num * bezier_anchor_den /
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s->params[w].bezier_curve_anchors[i].den);
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put_bits(pb, 1, s->params[w].color_saturation_mapping_flag);
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if (s->params[w].color_saturation_mapping_flag)
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put_bits(pb, 6, s->params[w].color_saturation_weight.num * saturation_weight_den /
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s->params[w].color_saturation_weight.den);
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}
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}
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flush_put_bits(pb);
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*data = buf;
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if (size)
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*size = size_bytes;
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return 0;
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}
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AVDynamicHDRSmpte2094App5 *av_dynamic_hdr_smpte2094_app5_alloc(size_t *size)
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{
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AVDynamicHDRSmpte2094App5 *smpte2094_app5 = av_mallocz(sizeof(AVDynamicHDRSmpte2094App5));
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if (!smpte2094_app5)
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return NULL;
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if (size)
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*size = sizeof(*smpte2094_app5);
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return smpte2094_app5;
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}
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AVDynamicHDRSmpte2094App5 *av_dynamic_hdr_smpte2094_app5_create_side_data(AVFrame *frame)
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{
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|
AVFrameSideData *side_data = av_frame_new_side_data(frame,
|
|
AV_FRAME_DATA_DYNAMIC_HDR_SMPTE_2094_APP5,
|
|
sizeof(AVDynamicHDRSmpte2094App5));
|
|
if (!side_data)
|
|
return NULL;
|
|
|
|
memset(side_data->data, 0, sizeof(AVDynamicHDRSmpte2094App5));
|
|
|
|
return (AVDynamicHDRSmpte2094App5 *)side_data->data;
|
|
}
|
|
|
|
#define GET_BITS_OR_FAIL(var, n) \
|
|
do { \
|
|
if (get_bits_left(gb) < n) { \
|
|
ret = AVERROR_INVALIDDATA; \
|
|
goto end; \
|
|
} \
|
|
var = get_bits(gb, n); \
|
|
} while (0)
|
|
|
|
int av_dynamic_hdr_smpte2094_app5_from_t35(AVDynamicHDRSmpte2094App5 *s, const uint8_t *data,
|
|
size_t size)
|
|
{
|
|
GetBitContext gbc, *gb = &gbc;
|
|
int ret, reserved_zero;
|
|
size_t padded_size = size + AV_INPUT_BUFFER_PADDING_SIZE;
|
|
|
|
if (!s)
|
|
return AVERROR(ENOMEM);
|
|
|
|
uint8_t *padded_data = av_mallocz(padded_size);
|
|
memcpy(padded_data, data, size);
|
|
ret = init_get_bits8(gb, padded_data, size);
|
|
if (ret < 0)
|
|
goto end;
|
|
|
|
// Table C.1
|
|
GET_BITS_OR_FAIL(s->application_version, 3);
|
|
GET_BITS_OR_FAIL(s->minimum_application_version, 3);
|
|
GET_BITS_OR_FAIL(reserved_zero, 2);
|
|
if (reserved_zero) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
|
|
// Table C.2
|
|
GET_BITS_OR_FAIL(s->has_custom_hdr_reference_white_flag, 1);
|
|
GET_BITS_OR_FAIL(s->has_adaptive_tone_map_flag, 1);
|
|
GET_BITS_OR_FAIL(reserved_zero, 6);
|
|
if (reserved_zero) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
if (s->has_custom_hdr_reference_white_flag)
|
|
GET_BITS_OR_FAIL(s->hdr_reference_white, 16);
|
|
if (!s->has_adaptive_tone_map_flag) {
|
|
ret = 0;
|
|
goto end;
|
|
}
|
|
|
|
// Table C.3
|
|
GET_BITS_OR_FAIL(s->baseline_hdr_headroom, 16);
|
|
GET_BITS_OR_FAIL(s->use_reference_white_tone_mapping_flag, 1);
|
|
if (s->use_reference_white_tone_mapping_flag) {
|
|
GET_BITS_OR_FAIL(reserved_zero, 7);
|
|
ret = reserved_zero ? AVERROR_INVALIDDATA : 0;
|
|
goto end;
|
|
}
|
|
GET_BITS_OR_FAIL(s->num_alternate_images, 3);
|
|
if (s->num_alternate_images > 4) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
GET_BITS_OR_FAIL(s->gain_application_space_chromaticities_flag, 2);
|
|
GET_BITS_OR_FAIL(s->has_common_component_mix_params_flag, 1);
|
|
GET_BITS_OR_FAIL(s->has_common_curve_params_flag, 1);
|
|
if (s->gain_application_space_chromaticities_flag == 3)
|
|
for (int r = 0; r < 8; r++)
|
|
GET_BITS_OR_FAIL(s->gain_application_space_chromaticities[r], 16);
|
|
|
|
for (int a = 0; a < s->num_alternate_images; a++) {
|
|
GET_BITS_OR_FAIL(s->alternate_hdr_headrooms[a], 16);
|
|
|
|
// Table C.4
|
|
if (!a || !s->has_common_component_mix_params_flag) {
|
|
GET_BITS_OR_FAIL(s->component_mixing_type[a], 2);
|
|
if (s->component_mixing_type[a] != 3) {
|
|
GET_BITS_OR_FAIL(reserved_zero, 6);
|
|
if (reserved_zero) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
} else {
|
|
for (int k = 0; k < 6; k++)
|
|
GET_BITS_OR_FAIL(s->has_component_mixing_coefficient_flag[a][k], 1);
|
|
for (int k = 0; k < 6; k++) {
|
|
if (s->has_component_mixing_coefficient_flag[a][k]) {
|
|
GET_BITS_OR_FAIL(s->component_mixing_coefficient[a][k], 16);
|
|
} else {
|
|
s->component_mixing_coefficient[a][k] = 0;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
s->component_mixing_type[a] = s->component_mixing_type[0];
|
|
if (s->component_mixing_type[a] == 3) {
|
|
for (int k = 0; k < 6; k++) {
|
|
s->has_component_mixing_coefficient_flag[a][k] =
|
|
s->has_component_mixing_coefficient_flag[0][k];
|
|
s->component_mixing_coefficient[a][k] = s->component_mixing_coefficient[0][k];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Table C.5
|
|
if (!a || !s->has_common_curve_params_flag) {
|
|
GET_BITS_OR_FAIL(s->gain_curve_num_control_points_minus_1[a], 5);
|
|
if (s->gain_curve_num_control_points_minus_1[a] > 31) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
GET_BITS_OR_FAIL(s->gain_curve_use_pchip_slope_flag[a], 1);
|
|
GET_BITS_OR_FAIL(reserved_zero, 2);
|
|
if (reserved_zero) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
for (int c = 0; c <= s->gain_curve_num_control_points_minus_1[a]; c++) {
|
|
GET_BITS_OR_FAIL(s->gain_curve_control_points_x[a][c], 16);
|
|
}
|
|
} else {
|
|
s->gain_curve_num_control_points_minus_1[a] =
|
|
s->gain_curve_num_control_points_minus_1[0];
|
|
s->gain_curve_use_pchip_slope_flag[a] = s->gain_curve_use_pchip_slope_flag[0];
|
|
for (int c = 0; c <= s->gain_curve_num_control_points_minus_1[a]; c++) {
|
|
s->gain_curve_control_points_x[a][c] = s->gain_curve_control_points_x[0][c];
|
|
}
|
|
}
|
|
for (int c = 0; c <= s->gain_curve_num_control_points_minus_1[a]; c++)
|
|
GET_BITS_OR_FAIL(s->gain_curve_control_points_y[a][c], 16);
|
|
if (!s->gain_curve_use_pchip_slope_flag[a]) {
|
|
for (int c = 0; c <= s->gain_curve_num_control_points_minus_1[a]; c++)
|
|
GET_BITS_OR_FAIL(s->gain_curve_control_points_theta[a][c], 16);
|
|
}
|
|
}
|
|
ret = 0;
|
|
end:
|
|
av_free(padded_data);
|
|
return ret;
|
|
}
|
|
|
|
int av_dynamic_hdr_smpte2094_app5_to_t35(const AVDynamicHDRSmpte2094App5 *s, uint8_t **data,
|
|
size_t *size)
|
|
{
|
|
uint8_t *buf;
|
|
size_t size_bytes, size_bits;
|
|
PutBitContext pbc, *pb = &pbc;
|
|
|
|
if (!s)
|
|
return AVERROR(EINVAL);
|
|
if ((!data || *data) && !size)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (s->application_version >= 8 || s->minimum_application_version >= 3)
|
|
return AVERROR_INVALIDDATA;
|
|
size_bits = 0;
|
|
size_bits += 3 + 3 + 2;
|
|
size_bits += 1 + 1 + 6;
|
|
if (s->has_custom_hdr_reference_white_flag)
|
|
size_bits += 16;
|
|
if (s->has_adaptive_tone_map_flag) {
|
|
size_bits += 16 + 1;
|
|
if (s->use_reference_white_tone_mapping_flag) {
|
|
size_bits += 7;
|
|
} else {
|
|
size_bits += 3 + 2 + 1 + 1;
|
|
if (s->gain_application_space_chromaticities_flag == 3)
|
|
size_bits += 16 * 8;
|
|
if (s->num_alternate_images > 4)
|
|
return AVERROR_INVALIDDATA;
|
|
for (int a = 0; a < s->num_alternate_images; a++) {
|
|
size_bits += 16;
|
|
if (!a || !s->has_common_component_mix_params_flag) {
|
|
size_bits += 2;
|
|
if (s->component_mixing_type[a] != 3) {
|
|
size_bits += 6;
|
|
} else {
|
|
size_bits += 6;
|
|
for (int k = 0; k < 6; k++)
|
|
if (s->has_component_mixing_coefficient_flag[a][k])
|
|
size_bits += 16;
|
|
}
|
|
}
|
|
if (!a || !s->has_common_curve_params_flag) {
|
|
size_bits += 5 + 1 + 2;
|
|
if (s->gain_curve_num_control_points_minus_1[a] > 31)
|
|
return AVERROR_INVALIDDATA;
|
|
size_bits += 16 * (s->gain_curve_num_control_points_minus_1[a] + 1);
|
|
}
|
|
size_bits += 16 * (s->gain_curve_num_control_points_minus_1[a] + 1);
|
|
if (!s->gain_curve_use_pchip_slope_flag[a])
|
|
size_bits += 16 * (s->gain_curve_num_control_points_minus_1[a] + 1);
|
|
}
|
|
}
|
|
}
|
|
if (size_bits % 8)
|
|
return AVERROR_INVALIDDATA;
|
|
size_bytes = size_bits >> 3;
|
|
|
|
if (!data) {
|
|
*size = size_bytes;
|
|
return 0;
|
|
} else if (*data) {
|
|
if (*size < size_bytes)
|
|
return AVERROR_BUFFER_TOO_SMALL;
|
|
buf = *data;
|
|
} else {
|
|
buf = av_malloc(size_bytes);
|
|
if (!buf)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
init_put_bits(pb, buf, size_bytes);
|
|
|
|
// Table C.1
|
|
put_bits(pb, 3, s->application_version);
|
|
put_bits(pb, 3, s->minimum_application_version);
|
|
put_bits(pb, 2, 0); // reserved_zero
|
|
|
|
// Table C.2
|
|
put_bits(pb, 1, s->has_custom_hdr_reference_white_flag);
|
|
put_bits(pb, 1, s->has_adaptive_tone_map_flag);
|
|
put_bits(pb, 6, 0); // reserved_zero
|
|
|
|
if (s->has_custom_hdr_reference_white_flag)
|
|
put_bits(pb, 16, s->hdr_reference_white);
|
|
|
|
if (s->has_adaptive_tone_map_flag) {
|
|
// Table C.3
|
|
put_bits(pb, 16, s->baseline_hdr_headroom);
|
|
put_bits(pb, 1, s->use_reference_white_tone_mapping_flag);
|
|
if (s->use_reference_white_tone_mapping_flag) {
|
|
put_bits(pb, 7, 0); // reserved_zero
|
|
} else {
|
|
put_bits(pb, 3, s->num_alternate_images);
|
|
put_bits(pb, 2, s->gain_application_space_chromaticities_flag);
|
|
put_bits(pb, 1, s->has_common_component_mix_params_flag);
|
|
put_bits(pb, 1, s->has_common_curve_params_flag);
|
|
|
|
if (s->gain_application_space_chromaticities_flag == 3)
|
|
for (int r = 0; r < 8; r++)
|
|
put_bits(pb, 16, s->gain_application_space_chromaticities[r]);
|
|
|
|
for (int a = 0; a < s->num_alternate_images; a++) {
|
|
put_bits(pb, 16, s->alternate_hdr_headrooms[a]);
|
|
|
|
// Table C.4
|
|
if (!a || !s->has_common_component_mix_params_flag) {
|
|
put_bits(pb, 2, s->component_mixing_type[a]);
|
|
if (s->component_mixing_type[a] != 3) {
|
|
put_bits(pb, 6, 0); // reserved_zero
|
|
} else {
|
|
for (int k = 0; k < 6; k++)
|
|
put_bits(pb, 1, s->has_component_mixing_coefficient_flag[a][k]);
|
|
for (int k = 0; k < 6; k++)
|
|
if (s->has_component_mixing_coefficient_flag[a][k])
|
|
put_bits(pb, 16, s->component_mixing_coefficient[a][k]);
|
|
}
|
|
}
|
|
|
|
// Table C.5
|
|
if (!a || !s->has_common_curve_params_flag) {
|
|
put_bits(pb, 5, s->gain_curve_num_control_points_minus_1[a]);
|
|
put_bits(pb, 1, s->gain_curve_use_pchip_slope_flag[a]);
|
|
put_bits(pb, 2, 0); // reserved_zero
|
|
for (int c = 0; c <= s->gain_curve_num_control_points_minus_1[a]; c++)
|
|
put_bits(pb, 16, s->gain_curve_control_points_x[a][c]);
|
|
}
|
|
for (int c = 0; c <= s->gain_curve_num_control_points_minus_1[a]; c++)
|
|
put_bits(pb, 16, s->gain_curve_control_points_y[a][c]);
|
|
if (!s->gain_curve_use_pchip_slope_flag[a]) {
|
|
for (int c = 0; c <= s->gain_curve_num_control_points_minus_1[a]; c++)
|
|
put_bits(pb, 16, s->gain_curve_control_points_theta[a][c]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
flush_put_bits(pb);
|
|
|
|
*data = buf;
|
|
if (size)
|
|
*size = size_bytes;
|
|
return 0;
|
|
}
|