libavcodec/aacpsy.h

   1 /*
   2  * AAC encoder psychoacoustic model
   3  * Copyright (C) 2008 Konstantin Shishkov
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef AVCODEC_AACPSY_H
  23 #define AVCODEC_AACPSY_H
  24
  25 #include "avcodec.h"
  26 #include "aac.h"
  27 //#include "lowpass.h"
  28
  29 enum AACPsyModelType{
  30     AAC_PSY_TEST,              ///< a sample model to exercise encoder
  31     AAC_PSY_3GPP,              ///< model following recommendations from 3GPP TS 26.403
  32
  33     AAC_NB_PSY_MODELS          ///< total number of psychoacoustic models, since it's not a part of the ABI new models can be added freely
  34 };
  35
  36 /**
  37  * context used by psychoacoustic model
  38  */
  39 typedef struct AACPsyContext {
  40     AVCodecContext *avctx;            ///< encoder context
  41 }AACPsyContext;
  42
  43 /**
  44  * Cleanup model context at the end.
  45  *
  46  * @param ctx model context
  47  */
  48 void ff_aac_psy_end(AACPsyContext *ctx);
  49
  50 #endif /* AVCODEC_AACPSY_H */