00001
00025 #ifndef AVFORMAT_OGGDEC_H
00026 #define AVFORMAT_OGGDEC_H
00027
00028 #include "avformat.h"
00029 #include "metadata.h"
00030
00031 struct ogg_codec {
00032 const int8_t *magic;
00033 uint8_t magicsize;
00034 const int8_t *name;
00041 int (*header)(AVFormatContext *, int);
00042 int (*packet)(AVFormatContext *, int);
00048 uint64_t (*gptopts)(AVFormatContext *, int, uint64_t, int64_t *dts);
00053 int granule_is_start;
00054 };
00055
00056 struct ogg_stream {
00057 uint8_t *buf;
00058 unsigned int bufsize;
00059 unsigned int bufpos;
00060 unsigned int pstart;
00061 unsigned int psize;
00062 unsigned int pflags;
00063 unsigned int pduration;
00064 uint32_t serial;
00065 uint64_t granule;
00066 int64_t lastpts;
00067 int64_t lastdts;
00068 int64_t sync_pos;
00069 int64_t page_pos;
00070 int flags;
00071 const struct ogg_codec *codec;
00072 int header;
00073 int nsegs, segp;
00074 uint8_t segments[255];
00075 int incomplete;
00076 int page_end;
00077 int keyframe_seek;
00078 int got_start;
00079 void *private;
00080 };
00081
00082 struct ogg_state {
00083 uint64_t pos;
00084 int curidx;
00085 struct ogg_state *next;
00086 int nstreams;
00087 struct ogg_stream streams[1];
00088 };
00089
00090 struct ogg {
00091 struct ogg_stream *streams;
00092 int nstreams;
00093 int headers;
00094 int curidx;
00095 struct ogg_state *state;
00096 };
00097
00098 #define OGG_FLAG_CONT 1
00099 #define OGG_FLAG_BOS 2
00100 #define OGG_FLAG_EOS 4
00101
00102 extern const struct ogg_codec ff_celt_codec;
00103 extern const struct ogg_codec ff_dirac_codec;
00104 extern const struct ogg_codec ff_flac_codec;
00105 extern const struct ogg_codec ff_ogm_audio_codec;
00106 extern const struct ogg_codec ff_ogm_old_codec;
00107 extern const struct ogg_codec ff_ogm_text_codec;
00108 extern const struct ogg_codec ff_ogm_video_codec;
00109 extern const struct ogg_codec ff_old_dirac_codec;
00110 extern const struct ogg_codec ff_old_flac_codec;
00111 extern const struct ogg_codec ff_skeleton_codec;
00112 extern const struct ogg_codec ff_speex_codec;
00113 extern const struct ogg_codec ff_theora_codec;
00114 extern const struct ogg_codec ff_vorbis_codec;
00115
00116 int ff_vorbis_comment(AVFormatContext *ms, AVDictionary **m, const uint8_t *buf, int size);
00117
00118 static inline int
00119 ogg_find_stream (struct ogg * ogg, int serial)
00120 {
00121 int i;
00122
00123 for (i = 0; i < ogg->nstreams; i++)
00124 if (ogg->streams[i].serial == serial)
00125 return i;
00126
00127 return -1;
00128 }
00129
00130 static inline uint64_t
00131 ogg_gptopts (AVFormatContext * s, int i, uint64_t gp, int64_t *dts)
00132 {
00133 struct ogg *ogg = s->priv_data;
00134 struct ogg_stream *os = ogg->streams + i;
00135 uint64_t pts = AV_NOPTS_VALUE;
00136
00137 if(os->codec && os->codec->gptopts){
00138 pts = os->codec->gptopts(s, i, gp, dts);
00139 } else {
00140 pts = gp;
00141 if (dts)
00142 *dts = pts;
00143 }
00144
00145 return pts;
00146 }
00147
00148 #endif
