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riff.h
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1 /*
2  * RIFF common functions and data
3  * copyright (c) 2000 Fabrice Bellard
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 RIFF based (de)muxers
25  * do NOT include this in end user applications
26  */
27 
28 #ifndef AVFORMAT_RIFF_H
29 #define AVFORMAT_RIFF_H
30 
31 #include "libavcodec/avcodec.h"
32 #include "avio.h"
33 #include "internal.h"
34 #include "metadata.h"
35 
36 extern const AVMetadataConv ff_riff_info_conv[];
37 
38 int64_t ff_start_tag(AVIOContext *pb, const char *tag);
39 void ff_end_tag(AVIOContext *pb, int64_t start);
40 
41 /**
42  * Read BITMAPINFOHEADER structure and set AVStream codec width, height and
43  * bits_per_encoded_sample fields. Does not read extradata.
44  * @return codec tag
45  */
46 int ff_get_bmp_header(AVIOContext *pb, AVStream *st, unsigned *esize);
47 
48 void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, const AVCodecTag *tags, int for_asf, int ignore_extradata);
49 
50 /**
51  * Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
52  */
53 #define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX 0x00000001
54 
55 /**
56  * Tell ff_put_wav_header() to write an empty channel mask.
57  */
58 #define FF_PUT_WAV_HEADER_SKIP_CHANNELMASK 0x00000002
59 
60 /**
61  * Write WAVEFORMAT header structure.
62  *
63  * @param flags a combination of FF_PUT_WAV_HEADER_* constants
64  *
65  * @return the size or -1 on error
66  */
68 
69 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
70 int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int size, int big_endian);
71 
72 extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_riff_video_tags()
73 extern const AVCodecTag ff_codec_wav_tags[];
74 
75 void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale);
76 
78 
79 /**
80  * Write all recognized RIFF tags from s->metadata
81  */
83 
84 /**
85  * Write a single RIFF info tag
86  */
87 void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str);
88 
89 typedef uint8_t ff_asf_guid[16];
90 
91 typedef struct AVCodecGuid {
92  enum AVCodecID id;
94 } AVCodecGuid;
95 
96 extern const AVCodecGuid ff_codec_wav_guids[];
97 
98 #define FF_PRI_GUID \
99  "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x " \
100  "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x}"
101 
102 #define FF_ARG_GUID(g) \
103  g[0], g[1], g[2], g[3], g[4], g[5], g[6], g[7], \
104  g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15],\
105  g[3], g[2], g[1], g[0], g[5], g[4], g[7], g[6], \
106  g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15]
107 
108 #define FF_MEDIASUBTYPE_BASE_GUID \
109  0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71
110 #define FF_AMBISONIC_BASE_GUID \
111  0x21, 0x07, 0xD3, 0x11, 0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00
112 
113 static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
114 {
115  return memcmp(g1, g2, sizeof(ff_asf_guid));
116 }
117 
119 void ff_put_guid(AVIOContext *s, const ff_asf_guid *g);
120 const ff_asf_guid *ff_get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid);
121 
122 enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
123 
124 #endif /* AVFORMAT_RIFF_H */
int ff_read_riff_info(AVFormatContext *s, int64_t size)
Definition: riffdec.c:226
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:147
Buffered I/O operations.
void ff_end_tag(AVIOContext *pb, int64_t start)
Definition: riffenc.c:38
int64_t ff_start_tag(AVIOContext *pb, const char *tag)
Definition: riffenc.c:31
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
void ff_put_guid(AVIOContext *s, const ff_asf_guid *g)
Definition: riffenc.c:346
const char * g
Definition: vf_curves.c:112
enum AVCodecID id
Definition: riff.h:92
ff_asf_guid guid
Definition: riff.h:93
const ff_asf_guid * ff_get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid)
Definition: riffenc.c:352
const AVMetadataConv ff_riff_info_conv[]
Definition: riff.c:517
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3945
Format I/O context.
Definition: avformat.h:1327
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:433
internal metadata API header see avformat.h or the public API!
uint8_t
uint32_t tag
Definition: movenc.c:1376
ptrdiff_t size
Definition: opengl_enc.c:101
int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int size, int big_endian)
Definition: riffdec.c:88
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:191
int ff_get_bmp_header(AVIOContext *pb, AVStream *st, unsigned *esize)
Read BITMAPINFOHEADER structure and set AVStream codec width, height and bits_per_encoded_sample fiel...
Definition: riffdec.c:208
void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale)
Definition: riffenc.c:263
void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str)
Write a single RIFF info tag.
Definition: riffenc.c:293
int ff_get_guid(AVIOContext *s, ff_asf_guid *g)
Definition: riffdec.c:32
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, const AVCodecTag *tags, int for_asf, int ignore_extradata)
Definition: riffenc.c:207
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
uint8_t ff_asf_guid[16]
Definition: riff.h:89
Stream structure.
Definition: avformat.h:878
const AVCodecGuid ff_codec_wav_guids[]
Definition: riff.c:544
Libavcodec external API header.
void ff_riff_write_info(AVFormatContext *s)
Write all recognized RIFF tags from s->metadata.
Definition: riffenc.c:324
static int flags
Definition: cpu.c:47
enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)
Definition: riffdec.c:44
enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
Definition: riffdec.c:191
unsigned bps
Definition: movenc.c:1377
void INT64 start
Definition: avisynth_c.h:690
#define av_always_inline
Definition: attributes.h:39
static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
Definition: riff.h:113