100 lines
4.2 KiB
C
100 lines
4.2 KiB
C
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/*
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* Copyright (c) 2014 Tim Walker <tdskywalker@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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/**
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* @file
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* internal header for HEVC (de)muxer utilities
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*/
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#ifndef AVFORMAT_HEVC_H
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#define AVFORMAT_HEVC_H
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#include <stdint.h>
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#include "avio.h"
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/**
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* Writes Annex B formatted HEVC NAL units to the provided AVIOContext.
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*
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* The NAL units are converted to an MP4-compatible format (start code prefixes
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* are replaced by 4-byte size fields, as per ISO/IEC 14496-15).
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*
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* If filter_ps is non-zero, any HEVC parameter sets found in the input will be
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* discarded, and *ps_count will be set to the number of discarded PS NAL units.
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*
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* @param pb address of the AVIOContext where the data shall be written
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* @param buf_in address of the buffer holding the input data
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* @param size size (in bytes) of the input buffer
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* @param filter_ps whether to write parameter set NAL units to the output (0)
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* or to discard them (non-zero)
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* @param ps_count address of the variable where the number of discarded
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* parameter set NAL units shall be written, may be NULL
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* @return the amount (in bytes) of data written in case of success, a negative
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* value corresponding to an AVERROR code in case of failure
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*/
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int ff_hevc_annexb2mp4(AVIOContext *pb, const uint8_t *buf_in,
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int size, int filter_ps, int *ps_count);
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/**
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* Writes Annex B formatted HEVC NAL units to a data buffer.
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*
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* The NAL units are converted to an MP4-compatible format (start code prefixes
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* are replaced by 4-byte size fields, as per ISO/IEC 14496-15).
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*
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* If filter_ps is non-zero, any HEVC parameter sets found in the input will be
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* discarded, and *ps_count will be set to the number of discarded PS NAL units.
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*
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* On success, *size holds the size (in bytes) of the output data buffer.
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*
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* @param buf_in address of the buffer holding the input data
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* @param size address of the variable holding the size (in bytes) of the input
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* buffer (on input) and of the output buffer (on success)
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* @param buf_out on success, address of the variable holding the address of
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* the output buffer
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* @param filter_ps whether to write parameter set NAL units to the output (0)
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* or to discard them (non-zero)
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* @param ps_count address of the variable where the number of discarded
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* parameter set NAL units shall be written, may be NULL
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* @return 0 in case of success, a negative value corresponding to an AVERROR
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* code in case of failure
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* @note *buf_out will be treated as uninitialized on input and won't be freed.
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*/
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int ff_hevc_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out,
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int *size, int filter_ps, int *ps_count);
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/**
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* Writes HEVC extradata (parameter sets, declarative SEI NAL units) to the
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* provided AVIOContext.
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*
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* If the extradata is Annex B format, it gets converted to hvcC format before
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* writing.
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*
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* @param pb address of the AVIOContext where the hvcC shall be written
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* @param data address of the buffer holding the data needed to write the hvcC
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* @param size size (in bytes) of the data buffer
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* @param ps_array_completeness whether all parameter sets are in the hvcC (1)
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* or there may be additional parameter sets in the bitstream (0)
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* @return >=0 in case of success, a negative value corresponding to an AVERROR
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* code in case of failure
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*/
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int ff_isom_write_hvcc(AVIOContext *pb, const uint8_t *data,
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int size, int ps_array_completeness);
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#endif /* AVFORMAT_HEVC_H */
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