support theora in ogg, plus required ogg core changes
[libav.git] / libavformat / ogg2.h
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1/**
2 Copyright (C) 2005 Michael Ahlberg, Måns Rullgård
3
4 Permission is hereby granted, free of charge, to any person
5 obtaining a copy of this software and associated documentation
6 files (the "Software"), to deal in the Software without
7 restriction, including without limitation the rights to use, copy,
8 modify, merge, publish, distribute, sublicense, and/or sell copies
9 of the Software, and to permit persons to whom the Software is
10 furnished to do so, subject to the following conditions:
11
12 The above copyright notice and this permission notice shall be
13 included in all copies or substantial portions of the Software.
14
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 DEALINGS IN THE SOFTWARE.
23**/
24
25#ifndef OGG_H
26#define OGG_H
27
28#include "avformat.h"
29
30typedef struct ogg_codec {
31 uint8_t *magic;
32 uint8_t magicsize;
33 int8_t *name;
34 int (*header)(AVFormatContext *, int);
35 int (*packet)(AVFormatContext *, int);
1ed923ea 36 uint64_t (*gptopts)(AVFormatContext *, int, uint64_t);
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37} ogg_codec_t;
38
39typedef struct ogg_stream {
40 uint8_t *buf;
41 unsigned int bufsize;
42 unsigned int bufpos;
43 unsigned int pstart;
44 unsigned int psize;
45 uint32_t serial;
46 uint32_t seq;
47 uint64_t granule, lastgp;
48 int flags;
49 ogg_codec_t *codec;
50 int header;
51 int nsegs, segp;
52 uint8_t segments[255];
1ed923ea 53 void *private;
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54} ogg_stream_t;
55
56typedef struct ogg_state {
57 uint64_t pos;
58 int curidx;
59 struct ogg_state *next;
ad3aa874 60 ogg_stream_t streams[1];
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61} ogg_state_t;
62
63typedef struct ogg {
64 ogg_stream_t *streams;
65 int nstreams;
66 int headers;
67 int curidx;
68 uint64_t size;
69 ogg_state_t *state;
70} ogg_t;
71
72#define OGG_FLAG_CONT 1
73#define OGG_FLAG_BOS 2
74#define OGG_FLAG_EOS 4
75
76extern ogg_codec_t vorbis_codec;
1ed923ea 77extern ogg_codec_t theora_codec;
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78#if 0
79extern ogg_codec_t ogm_video_codec;
80extern ogg_codec_t ogm_audio_codec;
81extern ogg_codec_t ogm_old_codec;
82extern ogg_codec_t flac_codec;
83#endif
84
85extern int vorbis_comment(AVFormatContext *ms, char *buf, int size);
86
87#endif