Libav
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 Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
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 
47 
48 void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf);
50 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
51 int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size);
52 
53 extern const AVCodecTag ff_codec_bmp_tags[];
54 extern const AVCodecTag ff_codec_wav_tags[];
55 
56 void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale);
57 
58 int ff_read_riff_info(AVFormatContext *s, int64_t size);
59 
64 
68 void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str);
69 
70 typedef uint8_t ff_asf_guid[16];
71 
72 typedef struct AVCodecGuid {
73  enum AVCodecID id;
75 } AVCodecGuid;
76 
77 extern const AVCodecGuid ff_codec_wav_guids[];
78 
79 #define FF_PRI_GUID \
80  "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
81 
82 #define FF_ARG_GUID(g) \
83  g[0], g[1], g[2], g[3], g[4], g[5], g[6], g[7], \
84  g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15]
85 
86 #define FF_MEDIASUBTYPE_BASE_GUID \
87  0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71
88 
89 static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
90 {
91  return memcmp(g1, g2, sizeof(ff_asf_guid));
92 }
93 
95 {
96  return avio_read(s, *g, sizeof(*g));
97 }
98 
99 enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
100 
101 #endif /* AVFORMAT_RIFF_H */
int ff_read_riff_info(AVFormatContext *s, int64_t size)
Definition: riffdec.c:179
Bytestream IO Context.
Definition: avio.h:68
Buffered I/O operations.
int size
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
static av_always_inline int ff_get_guid(AVIOContext *s, ff_asf_guid *g)
Definition: riff.h:94
enum AVCodecID id
Definition: riff.h:73
ff_asf_guid guid
Definition: riff.h:74
const AVMetadataConv ff_riff_info_conv[]
Definition: riff.c:421
Format I/O context.
Definition: avformat.h:922
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:353
internal metadata API header see avformat.h or the public API!
uint8_t
uint32_t tag
Definition: movenc.c:844
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:463
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:105
void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale)
Definition: riffenc.c:212
int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
Definition: riffdec.c:82
void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str)
Write a single RIFF info tag.
Definition: riffenc.c:245
g
Definition: yuv2rgb.c:535
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:29
uint8_t ff_asf_guid[16]
Definition: riff.h:70
Stream structure.
Definition: avformat.h:699
const AVCodecGuid ff_codec_wav_guids[]
Definition: riffdec.c:32
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1050
void ff_riff_write_info(AVFormatContext *s)
Write all recognized RIFF tags from s->metadata.
Definition: riffenc.c:276
void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
Definition: riffenc.c:186
enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)
Definition: riffdec.c:40
enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)
Definition: riffdec.c:145
int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
Definition: riffenc.c:50
unsigned bps
Definition: movenc.c:845
int ff_get_bmp_header(AVIOContext *pb, AVStream *st)
Read BITMAPINFOHEADER structure and set AVStream codec width, height and bits_per_encoded_sample fiel...
Definition: riffdec.c:162
#define av_always_inline
Definition: attributes.h:40
static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
Definition: riff.h:89