[deb_ffmpeg.git] / ffmpeg / libavformat / hevc.h

/*
 * 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 output, *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 output)
 * @param buf_out 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 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_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 */
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2014 Tim Walker <tdskywalker@gmail.com>
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	/**
	22	* @file
	23	* internal header for HEVC (de)muxer utilities
	24	*/
	25
	26	#ifndef AVFORMAT_HEVC_H
	27	#define AVFORMAT_HEVC_H
	28
	29	#include <stdint.h>
	30	#include "avio.h"
	31
	32	/**
	33	* Writes Annex B formatted HEVC NAL units to the provided AVIOContext.
	34	*
	35	* The NAL units are converted to an MP4-compatible format (start code prefixes
	36	* are replaced by 4-byte size fields, as per ISO/IEC 14496-15).
	37	*
	38	* If filter_ps is non-zero, any HEVC parameter sets found in the input will be
	39	* discarded, and *ps_count will be set to the number of discarded PS NAL units.
	40	*
	41	* @param pb address of the AVIOContext where the data shall be written
	42	* @param buf_in address of the buffer holding the input data
	43	* @param size size (in bytes) of the input buffer
	44	* @param filter_ps whether to write parameter set NAL units to the output (0)
	45	* or to discard them (non-zero)
	46	* @param ps_count address of the variable where the number of discarded
	47	* parameter set NAL units shall be written, may be NULL
	48	* @return the amount (in bytes) of data written in case of success, a negative
	49	* value corresponding to an AVERROR code in case of failure
	50	*/
	51	int ff_hevc_annexb2mp4(AVIOContext pb, const uint8_t buf_in,
	52	int size, int filter_ps, int *ps_count);
	53
	54	/**
	55	* Writes Annex B formatted HEVC NAL units to a data buffer.
	56	*
	57	* The NAL units are converted to an MP4-compatible format (start code prefixes
	58	* are replaced by 4-byte size fields, as per ISO/IEC 14496-15).
	59	*
	60	* If filter_ps is non-zero, any HEVC parameter sets found in the input will be
	61	* discarded, and *ps_count will be set to the number of discarded PS NAL units.
	62	*
	63	* On output, *size holds the size (in bytes) of the output data buffer.
	64	*
65	* @param buf_in address of the buffer holding the input data
66	* @param size address of the variable holding the size (in bytes) of the input
67	* buffer (on input) and of the output buffer (on output)
68	* @param buf_out address of the variable holding the address of the output
69	* buffer
70	* @param filter_ps whether to write parameter set NAL units to the output (0)
71	* or to discard them (non-zero)
72	* @param ps_count address of the variable where the number of discarded
73	* parameter set NAL units shall be written, may be NULL
74	* @return the amount (in bytes) of data written in case of success, a negative
75	* value corresponding to an AVERROR code in case of failure
76	*/
77	int ff_hevc_annexb2mp4_buf(const uint8_t buf_in, uint8_t *buf_out,
78	int size, int filter_ps, int ps_count);
79
80	/**
81	* Writes HEVC extradata (parameter sets, declarative SEI NAL units) to the
82	* provided AVIOContext.
83	*
84	* If the extradata is Annex B format, it gets converted to hvcC format before
85	* writing.
86	*
87	* @param pb address of the AVIOContext where the hvcC shall be written
88	* @param data address of the buffer holding the data needed to write the hvcC
89	* @param size size (in bytes) of the data buffer
90	* @param ps_array_completeness whether all parameter sets are in the hvcC (1)
91	* or there may be additional parameter sets in the bitstream (0)
92	* @return >=0 in case of success, a negative value corresponding to an AVERROR
93	* code in case of failure
94	*/
95	int ff_isom_write_hvcc(AVIOContext pb, const uint8_t data,
96	int size, int ps_array_completeness);
97
98	#endif /* AVFORMAT_HEVC_H */