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
67 unsigned int pduration;
70 uint64_t start_granule;
73 int64_t sync_pos; ///< file offset of the first page needed to reconstruct the current packet
74 int64_t page_pos; ///< file offset of the current page
76 const struct ogg_codec *codec;
79 uint8_t segments[255];
80 int incomplete; ///< whether we're expecting a continuation in the next page
81 int page_end; ///< current packet is the last one completed in the page
84 int got_data; ///< 1 if the stream got some data (non-initial packets), 0 otherwise
85 int nb_header; ///< set to the number of parsed headers
92 struct ogg_state *next;
94 struct ogg_stream streams[1];
98 struct ogg_stream *streams;
102 struct ogg_state *state;
105 #define OGG_FLAG_CONT 1
106 #define OGG_FLAG_BOS 2
107 #define OGG_FLAG_EOS 4
109 #define OGG_NOGRANULE_VALUE (-1ull)
111 extern const struct ogg_codec ff_celt_codec;
112 extern const struct ogg_codec ff_dirac_codec;
113 extern const struct ogg_codec ff_flac_codec;
114 extern const struct ogg_codec ff_ogm_audio_codec;
115 extern const struct ogg_codec ff_ogm_old_codec;
116 extern const struct ogg_codec ff_ogm_text_codec;
117 extern const struct ogg_codec ff_ogm_video_codec;
118 extern const struct ogg_codec ff_old_dirac_codec;
119 extern const struct ogg_codec ff_old_flac_codec;
120 extern const struct ogg_codec ff_opus_codec;
121 extern const struct ogg_codec ff_skeleton_codec;
122 extern const struct ogg_codec ff_speex_codec;
123 extern const struct ogg_codec ff_theora_codec;
124 extern const struct ogg_codec ff_vorbis_codec;
126 int ff_vorbis_comment(AVFormatContext *ms, AVDictionary **m, const uint8_t *buf, int size);
129 ogg_find_stream (struct ogg * ogg, int serial)
133 for (i = 0; i < ogg->nstreams; i++)
134 if (ogg->streams[i].serial == serial)
140 static inline uint64_t
141 ogg_gptopts (AVFormatContext * s, int i, uint64_t gp, int64_t *dts)
143 struct ogg *ogg = s->priv_data;
144 struct ogg_stream *os = ogg->streams + i;
145 uint64_t pts = AV_NOPTS_VALUE;
147 if(os->codec && os->codec->gptopts){
148 pts = os->codec->gptopts(s, i, gp, dts);
158 #endif /* AVFORMAT_OGGDEC_H */