FFmpeg
vpcc.h
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2016 Google Inc.
3  * Copyright (c) 2016 KongQun Yang (kqyang@google.com)
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * internal header for VPx codec configuration utilities.
25  */
26 
27 #ifndef AVFORMAT_VPCC_H
28 #define AVFORMAT_VPCC_H
29 
30 #include "libavutil/rational.h"
31 #include "libavcodec/codec_par.h"
32 #include "avio.h"
33 #include "avformat.h"
34 
35 typedef struct VPCC {
36  int profile;
37  int level;
38  int bitdepth;
41 } VPCC;
42 
43 /**
44  * Writes VP codec configuration to the provided AVIOContext.
45  *
46  * @param s address of the AVFormatContext for the logging context.
47  * @param pb address of the AVIOContext where the vpcC shall be written.
48  * @param data address of a data array which contains coded bitstream data from
49  * which codec information can be extracted. May be NULL.
50  * @param len length of the data array.
51  * @param par address of the AVCodecParameters which contains codec information.
52  * @return >=0 in case of success, a negative value corresponding to an AVERROR
53  * code in case of failure
54  */
56  const uint8_t *data, int len,
57  AVCodecParameters *par);
58 
60  const uint8_t *data, int len,
61  AVRational *frame_rate, VPCC *vpcc);
62 
63 #endif /* AVFORMAT_VPCC_H */
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:47
rational.h
VPCC::full_range_flag
int full_range_flag
Definition: vpcc.h:40
data
const char data[16]
Definition: mxf.c:148
VPCC::chroma_subsampling
int chroma_subsampling
Definition: vpcc.h:39
ff_isom_write_vpcc
int ff_isom_write_vpcc(AVFormatContext *s, AVIOContext *pb, const uint8_t *data, int len, AVCodecParameters *par)
Writes VP codec configuration to the provided AVIOContext.
Definition: vpcc.c:200
s
#define s(width, name)
Definition: cbs_vp9.c:198
ff_isom_get_vpcc_features
int ff_isom_get_vpcc_features(AVFormatContext *s, AVCodecParameters *par, const uint8_t *data, int len, AVRational *frame_rate, VPCC *vpcc)
Definition: vpcc.c:153
AVFormatContext
Format I/O context.
Definition: avformat.h:1300
VPCC::bitdepth
int bitdepth
Definition: vpcc.h:38
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVIOContext
Bytestream IO Context.
Definition: avio.h:160
avio.h
len
int len
Definition: vorbis_enc_data.h:426
avformat.h
VPCC::level
int level
Definition: vpcc.h:37
VPCC
Definition: vpcc.h:35
codec_par.h
VPCC::profile
int profile
Definition: vpcc.h:36