vorbis_parser_internal.h (1713B)
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 34 struct 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 */