1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* Copyright (c) 2014 Tim Walker <tdskywalker@gmail.com>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; 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 0 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 */
|
