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/*
* H.266 / VVC 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
*/
/**
* @file
* internal header for H.266/VVC (de)muxer utilities
*/
#ifndef AVFORMAT_VVC_H
#define AVFORMAT_VVC_H
#include <stdint.h>
#include "avio.h"
/**
* Writes Annex B formatted H.266/VVC NAL units to the provided AVIOContext.
*
* The NAL units are converted to an MP4-compatible format (start code prefixes
* are replaced by 4-byte size fields, as per ISO/IEC 14496-15).
*
* If filter_ps is non-zero, any VVC parameter sets found in the input will be
* discarded, and *ps_count will be set to the number of discarded PS NAL units.
*
* @param pb address of the AVIOContext where the data shall be written
* @param buf_in address of the buffer holding the input data
* @param size size (in bytes) of the input buffer
* @param filter_ps whether to write parameter set NAL units to the output (0)
* or to discard them (non-zero)
* @param ps_count address of the variable where the number of discarded
* parameter set NAL units shall be written, may be NULL
* @return the amount (in bytes) of data written in case of success, a negative
* value corresponding to an AVERROR code in case of failure
*/
int ff_vvc_annexb2mp4(AVIOContext *pb, const uint8_t *buf_in,
int size, int filter_ps, int *ps_count);
/**
* Writes Annex B formatted H.266/VVC NAL units to a data buffer.
*
* The NAL units are converted to an MP4-compatible format (start code prefixes
* are replaced by 4-byte size fields, as per ISO/IEC 14496-15).
*
* If filter_ps is non-zero, any VVC parameter sets found in the input will be
* discarded, and *ps_count will be set to the number of discarded PS NAL units.
*
* On success, *size holds the size (in bytes) of the output data buffer.
*
* @param buf_in address of the buffer holding the input data
* @param size address of the variable holding the size (in bytes) of the input
* buffer (on input) and of the output buffer (on success)
* @param buf_out on success, address of the variable holding the address of
* the output buffer
* @param filter_ps whether to write parameter set NAL units to the output (0)
* or to discard them (non-zero)
* @param ps_count address of the variable where the number of discarded
* parameter set NAL units shall be written, may be NULL
* @return 0 in case of success, a negative value corresponding to an AVERROR
* code in case of failure
* @note *buf_out will be treated as uninitialized on input and won't be freed.
*/
int ff_vvc_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out,
int *size, int filter_ps, int *ps_count);
/**
* Writes H.266/VVC extradata (parameter sets, declarative SEI NAL units) to
* the provided AVIOContext.
*
* If the extradata is Annex B format, it gets converted to vvcC format before
* writing.
*
* @param pb address of the AVIOContext where the vvcC shall be written
* @param data address of the buffer holding the data needed to write the vvcC
* @param size size (in bytes) of the data buffer
* @param ps_array_completeness whether all parameter sets are in the vvcC (1)
* or there may be additional parameter sets in the bitstream (0)
* @return >=0 in case of success, a negative value corresponding to an AVERROR
* code in case of failure
*/
int ff_isom_write_vvcc(AVIOContext *pb, const uint8_t *data,
int size, int ps_array_completeness);
#endif /* AVFORMAT_VVC_H */
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