1/**
2    Copyright (C) 2005  Michael Ahlberg, M��ns Rullg��rd
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 AVFORMAT_OGGDEC_H
26#define AVFORMAT_OGGDEC_H
27
28#include "avformat.h"
29
30struct ogg_codec {
31    const int8_t *magic;
32    uint8_t magicsize;
33    const int8_t *name;
34    int (*header)(AVFormatContext *, int);
35    int (*packet)(AVFormatContext *, int);
36    uint64_t (*gptopts)(AVFormatContext *, int, uint64_t);
37};
38
39struct ogg_stream {
40    uint8_t *buf;
41    unsigned int bufsize;
42    unsigned int bufpos;
43    unsigned int pstart;
44    unsigned int psize;
45    unsigned int pflags;
46    uint32_t serial;
47    uint32_t seq;
48    uint64_t granule, lastgp;
49    int flags;
50    struct ogg_codec *codec;
51    int header;
52    int nsegs, segp;
53    uint8_t segments[255];
54    void *private;
55};
56
57struct ogg_state {
58    uint64_t pos;
59    int curidx;
60    struct ogg_state *next;
61    int nstreams;
62    struct ogg_stream streams[1];
63};
64
65struct ogg {
66    struct ogg_stream *streams;
67    int nstreams;
68    int headers;
69    int curidx;
70    uint64_t size;
71    struct ogg_state *state;
72};
73
74#define OGG_FLAG_CONT 1
75#define OGG_FLAG_BOS  2
76#define OGG_FLAG_EOS  4
77
78extern const struct ogg_codec ff_flac_codec;
79extern const struct ogg_codec ff_ogm_audio_codec;
80extern const struct ogg_codec ff_ogm_old_codec;
81extern const struct ogg_codec ff_ogm_text_codec;
82extern const struct ogg_codec ff_ogm_video_codec;
83extern const struct ogg_codec ff_old_flac_codec;
84extern const struct ogg_codec ff_speex_codec;
85extern const struct ogg_codec ff_theora_codec;
86extern const struct ogg_codec ff_vorbis_codec;
87
88int vorbis_comment(AVFormatContext *ms, uint8_t *buf, int size);
89
90#endif /* AVFORMAT_OGGDEC_H */
91