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2ba45a60 | 1 | /* |
2ba45a60 DM |
2 | * |
3 | * This file is part of FFmpeg. | |
4 | * | |
5 | * FFmpeg is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU Lesser General Public | |
7 | * License as published by the Free Software Foundation; either | |
8 | * version 2.1 of the License, or (at your option) any later version. | |
9 | * | |
10 | * FFmpeg is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public | |
16 | * License along with FFmpeg; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | ||
20 | /** | |
21 | * @file | |
f6fa7814 | 22 | * A public API for Vorbis parsing |
2ba45a60 DM |
23 | * |
24 | * Determines the duration for each packet. | |
25 | */ | |
26 | ||
f6fa7814 DM |
27 | #ifndef AVCODEC_VORBIS_PARSE_H |
28 | #define AVCODEC_VORBIS_PARSE_H | |
2ba45a60 | 29 | |
f6fa7814 | 30 | #include <stdint.h> |
2ba45a60 | 31 | |
f6fa7814 | 32 | typedef struct AVVorbisParseContext AVVorbisParseContext; |
2ba45a60 DM |
33 | |
34 | /** | |
f6fa7814 | 35 | * Allocate and initialize the Vorbis parser using headers in the extradata. |
2ba45a60 DM |
36 | * |
37 | * @param avctx codec context | |
38 | * @param s Vorbis parser context | |
39 | */ | |
f6fa7814 DM |
40 | AVVorbisParseContext *av_vorbis_parse_init(const uint8_t *extradata, |
41 | int extradata_size); | |
42 | ||
43 | /** | |
44 | * Free the parser and everything associated with it. | |
45 | */ | |
46 | void av_vorbis_parse_free(AVVorbisParseContext **s); | |
2ba45a60 DM |
47 | |
48 | #define VORBIS_FLAG_HEADER 0x00000001 | |
49 | #define VORBIS_FLAG_COMMENT 0x00000002 | |
50 | ||
51 | /** | |
52 | * Get the duration for a Vorbis packet. | |
53 | * | |
f6fa7814 | 54 | * If @p flags is @c NULL, |
2ba45a60 DM |
55 | * special frames are considered invalid. |
56 | * | |
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 | |
61 | */ | |
f6fa7814 DM |
62 | int av_vorbis_parse_frame_flags(AVVorbisParseContext *s, const uint8_t *buf, |
63 | int buf_size, int *flags); | |
2ba45a60 DM |
64 | |
65 | /** | |
66 | * Get the duration for a Vorbis packet. | |
67 | * | |
2ba45a60 DM |
68 | * @param s Vorbis parser context |
69 | * @param buf buffer containing a Vorbis frame | |
70 | * @param buf_size size of the buffer | |
71 | */ | |
f6fa7814 DM |
72 | int av_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf, |
73 | int buf_size); | |
2ba45a60 | 74 | |
f6fa7814 | 75 | void av_vorbis_parse_reset(AVVorbisParseContext *s); |
2ba45a60 | 76 | |
f6fa7814 | 77 | #endif /* AVCODEC_VORBIS_PARSE_H */ |