mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-23 15:53:08 +00:00
99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/*
|
|
* AV1 helper functions for muxers
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef AVFORMAT_AV1_H
|
|
#define AVFORMAT_AV1_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "avio.h"
|
|
|
|
typedef struct AV1SequenceParameters {
|
|
uint8_t profile;
|
|
uint8_t level;
|
|
uint8_t tier;
|
|
uint8_t bitdepth;
|
|
uint8_t monochrome;
|
|
uint8_t chroma_subsampling_x;
|
|
uint8_t chroma_subsampling_y;
|
|
uint8_t chroma_sample_position;
|
|
uint8_t color_description_present_flag;
|
|
uint8_t color_primaries;
|
|
uint8_t transfer_characteristics;
|
|
uint8_t matrix_coefficients;
|
|
uint8_t color_range;
|
|
} AV1SequenceParameters;
|
|
|
|
/**
|
|
* Filter out AV1 OBUs not meant to be present in ISOBMFF sample data and write
|
|
* the resulting bitstream to the provided AVIOContext.
|
|
*
|
|
* @param pb pointer to the AVIOContext where the filtered bitstream shall be
|
|
* written
|
|
* @param buf input data buffer
|
|
* @param size size of the input data buffer
|
|
*
|
|
* @return the amount of bytes written in case of success, a negative AVERROR
|
|
* code in case of failure
|
|
*/
|
|
int ff_av1_filter_obus(AVIOContext *pb, const uint8_t *buf, int size);
|
|
|
|
/**
|
|
* Filter out AV1 OBUs not meant to be present in ISOBMFF sample data and write
|
|
* the resulting bitstream to a newly allocated data buffer.
|
|
*
|
|
* @param pb pointer to the AVIOContext where the filtered bitstream shall be
|
|
* written
|
|
* @param buf input data buffer
|
|
* @param out pointer to pointer that will hold the allocated data buffer
|
|
* @param size size of the input data buffer. The size of the resulting output
|
|
data buffer will be written here
|
|
*
|
|
* @return the amount of bytes written in case of success, a negative AVERROR
|
|
* code in case of failure. On failure, out and size are unchanged
|
|
*/
|
|
int ff_av1_filter_obus_buf(const uint8_t *buf, uint8_t **out, int *size);
|
|
|
|
/**
|
|
* Parses a Sequence Header from the the provided buffer.
|
|
*
|
|
* @param seq pointer to the AV1SequenceParameters where the parsed values will
|
|
* be written
|
|
* @param buf input data buffer
|
|
* @param size size in bytes of the input data buffer
|
|
*
|
|
* @return >= 0 in case of success, a negative AVERROR code in case of failure
|
|
*/
|
|
int ff_av1_parse_seq_header(AV1SequenceParameters *seq, const uint8_t *buf, int size);
|
|
|
|
/**
|
|
* Writes AV1 extradata (Sequence Header and Metadata OBUs) to the provided
|
|
* AVIOContext.
|
|
*
|
|
* @param pb pointer to the AVIOContext where the av1C box shall be written
|
|
* @param buf input data buffer
|
|
* @param size size in bytes of the input data buffer
|
|
*
|
|
* @return >= 0 in case of success, a negative AVERROR code in case of failure
|
|
*/
|
|
int ff_isom_write_av1c(AVIOContext *pb, const uint8_t *buf, int size);
|
|
|
|
#endif /* AVFORMAT_AV1_H */
|