libavcodec/aacpsy.h
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 /*
  * AAC encoder psychoacoustic model
  * Copyright (C) 2008 Konstantin Shishkov
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
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 #ifndef AVCODEC_AACPSY_H
 #define AVCODEC_AACPSY_H
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 #include "avcodec.h"
 #include "aac.h"
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 //#include "lowpass.h"
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 enum AACPsyModelType{
     AAC_PSY_TEST,              ///< a sample model to exercise encoder
     AAC_PSY_3GPP,              ///< model following recommendations from 3GPP TS 26.403
 
     AAC_NB_PSY_MODELS          ///< total number of psychoacoustic models, since it's not a part of the ABI new models can be added freely
 };
 
 /**
  * context used by psychoacoustic model
  */
 typedef struct AACPsyContext {
     AVCodecContext *avctx;            ///< encoder context
 }AACPsyContext;
 
 /**
  * Cleanup model context at the end.
  *
  * @param ctx model context
  */
 void ff_aac_psy_end(AACPsyContext *ctx);
 
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 #endif /* AVCODEC_AACPSY_H */