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libavcodec/mpeg4audio.h

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00001 /*
00002  * MPEG-4 Audio common header
00003  * Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@free.fr>
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #ifndef AVCODEC_MPEG4AUDIO_H
00023 #define AVCODEC_MPEG4AUDIO_H
00024 
00025 #include <stdint.h>
00026 
00027 typedef struct {
00028     int object_type;
00029     int sampling_index;
00030     int sample_rate;
00031     int chan_config;
00032     int sbr; //< -1 implicit, 1 presence
00033     int ext_object_type;
00034     int ext_sampling_index;
00035     int ext_sample_rate;
00036 } MPEG4AudioConfig;
00037 
00038 extern const int ff_mpeg4audio_sample_rates[16];
00039 extern const uint8_t ff_mpeg4audio_channels[8];
00047 int ff_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int buf_size);
00048 
00049 #endif /* AVCODEC_MPEG4AUDIO_H */

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