1/*
2 * Copyright (c) 2012 Justin Ruggles
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21/**
22 * @file
23 * Vorbis audio parser
24 *
25 * Determines the duration for each packet.
26 */
27
28#ifndef AVCODEC_VORBIS_PARSER_INTERNAL_H
29#define AVCODEC_VORBIS_PARSER_INTERNAL_H
30
31#include "avcodec.h"
32#include "vorbis_parser.h"
33
34struct AVVorbisParseContext {
35    const AVClass *class;
36    int extradata_parsed;       ///< we have attempted to parse extradata
37    int valid_extradata;        ///< extradata is valid, so we can calculate duration
38    int blocksize[2];           ///< short and long window sizes
39    int previous_blocksize;     ///< previous window size
40    int mode_blocksize[64];     ///< window size mapping for each mode
41    int mode_count;             ///< number of modes
42    int mode_mask;              ///< bitmask used to get the mode in each packet
43    int prev_mask;              ///< bitmask used to get the previous mode flag in each packet
44};
45
46#endif /* AVCODEC_VORBIS_PARSER_INTERNAL_H */
47