2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 * A public API for Vorbis parsing
23 * Determines the duration for each packet.
26 #ifndef AVCODEC_VORBIS_PARSER_H
27 #define AVCODEC_VORBIS_PARSER_H
31 typedef struct AVVorbisParseContext AVVorbisParseContext;
34 * Allocate and initialize the Vorbis parser using headers in the extradata.
36 * @param avctx codec context
37 * @param s Vorbis parser context
39 AVVorbisParseContext *av_vorbis_parse_init(const uint8_t *extradata,
43 * Free the parser and everything associated with it.
45 void av_vorbis_parse_free(AVVorbisParseContext **s);
47 #define VORBIS_FLAG_HEADER 0x00000001
48 #define VORBIS_FLAG_COMMENT 0x00000002
49 #define VORBIS_FLAG_SETUP 0x00000004
52 * Get the duration for a Vorbis packet.
54 * If @p flags is @c NULL,
55 * special frames are considered invalid.
57 * @param s Vorbis parser context
58 * @param buf buffer containing a Vorbis frame
59 * @param buf_size size of the buffer
60 * @param flags flags for special frames
62 int av_vorbis_parse_frame_flags(AVVorbisParseContext *s, const uint8_t *buf,
63 int buf_size, int *flags);
66 * Get the duration for a Vorbis packet.
68 * @param s Vorbis parser context
69 * @param buf buffer containing a Vorbis frame
70 * @param buf_size size of the buffer
72 int av_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf,
75 void av_vorbis_parse_reset(AVVorbisParseContext *s);
77 #endif /* AVCODEC_VORBIS_PARSER_H */