/* * Copyright (c) 2014 Tim Walker <tdskywalker@gmail.com> * * 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 HEVC (de)muxer utilities */ #ifndef AVFORMAT_HEVC_H #define AVFORMAT_HEVC_H #include <stdint.h> #include "avio.h" /** * Writes Annex B formatted HEVC 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 HEVC 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_hevc_annexb2mp4(AVIOContext *pb, const uint8_t *buf_in, int size, int filter_ps, int *ps_count); /** * Writes Annex B formatted HEVC 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 HEVC 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_hevc_annexb2mp4_buf(const uint8_t *buf_in, uint8_t **buf_out, int *size, int filter_ps, int *ps_count); /** * Writes HEVC extradata (parameter sets, declarative SEI NAL units) to the * provided AVIOContext. * * If the extradata is Annex B format, it gets converted to hvcC format before * writing. * * @param pb address of the AVIOContext where the hvcC shall be written * @param data address of the buffer holding the data needed to write the hvcC * @param size size (in bytes) of the data buffer * @param ps_array_completeness whether all parameter sets are in the hvcC (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_hvcc(AVIOContext *pb, const uint8_t *data, int size, int ps_array_completeness); #endif /* AVFORMAT_HEVC_H */