2 Copyright (C) 2005 Michael Ahlberg, Måns Rullgård
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:
12 The above copyright notice and this permission notice shall be
13 included in all copies or substantial portions of the Software.
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.
25 #ifndef AVFORMAT_OGGDEC_H
26 #define AVFORMAT_OGGDEC_H
36 * Attempt to process a packet as a header
37 * @return 1 if the packet was a valid header,
38 * 0 if the packet was not a header (was a data packet)
39 * -1 if an error occurred or for unsupported stream
41 int (*header)(AVFormatContext *, int);
42 int (*packet)(AVFormatContext *, int);
44 * Translate a granule into a timestamp.
45 * Will set dts if non-null and known.
48 uint64_t (*gptopts)(AVFormatContext *, int, uint64_t, int64_t *dts);
50 * 1 if granule is the start time of the associated packet.
51 * 0 if granule is the end time of the associated packet.
55 * Number of expected headers
58 void (*cleanup)(AVFormatContext *s, int idx);
68 unsigned int pduration;
71 uint64_t start_granule;
74 int64_t sync_pos; ///< file offset of the first page needed to reconstruct the current packet
75 int64_t page_pos; ///< file offset of the current page
77 const struct ogg_codec *codec;
80 uint8_t segments[255];
81 int incomplete; ///< whether we're expecting a continuation in the next page
82 int page_end; ///< current packet is the last one completed in the page
84 int nb_header; ///< set to the number of parsed headers
91 struct ogg_state *next;
93 struct ogg_stream streams[1];
97 struct ogg_stream *streams;
101 struct ogg_state *state;
104 #define OGG_FLAG_CONT 1
105 #define OGG_FLAG_BOS 2
106 #define OGG_FLAG_EOS 4
108 #define OGG_NOGRANULE_VALUE -1ull
110 extern const struct ogg_codec ff_celt_codec;
111 extern const struct ogg_codec ff_dirac_codec;
112 extern const struct ogg_codec ff_flac_codec;
113 extern const struct ogg_codec ff_ogm_audio_codec;
114 extern const struct ogg_codec ff_ogm_old_codec;
115 extern const struct ogg_codec ff_ogm_text_codec;
116 extern const struct ogg_codec ff_ogm_video_codec;
117 extern const struct ogg_codec ff_old_dirac_codec;
118 extern const struct ogg_codec ff_old_flac_codec;
119 extern const struct ogg_codec ff_opus_codec;
120 extern const struct ogg_codec ff_skeleton_codec;
121 extern const struct ogg_codec ff_speex_codec;
122 extern const struct ogg_codec ff_theora_codec;
123 extern const struct ogg_codec ff_vorbis_codec;
125 int ff_vorbis_comment(AVFormatContext *ms, AVDictionary **m,
126 const uint8_t *buf, int size, int parse_picture);
128 int ff_vorbis_stream_comment(AVFormatContext *as, AVStream *st,
129 const uint8_t *buf, int size);
132 ogg_find_stream (struct ogg * ogg, int serial)
136 for (i = 0; i < ogg->nstreams; i++)
137 if (ogg->streams[i].serial == serial)
143 static inline uint64_t
144 ogg_gptopts (AVFormatContext * s, int i, uint64_t gp, int64_t *dts)
146 struct ogg *ogg = s->priv_data;
147 struct ogg_stream *os = ogg->streams + i;
148 uint64_t pts = AV_NOPTS_VALUE;
150 if(os->codec && os->codec->gptopts){
151 pts = os->codec->gptopts(s, i, gp, dts);
161 #endif /* AVFORMAT_OGGDEC_H */