apps/codecs/libpcm/ima_adpcm_common.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
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   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 Yoshihisa Uchida
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #ifndef CODEC_LIBPCM_IMA_ADPCM_COMMON_H
  22 #define CODEC_LIBPCM_IMA_ADPCM_COMMON_H
  23
  24 #include <stdbool.h>
  25 #include <inttypes.h>
  26
  27 #define IMA_ADPCM_INC_DEPTH (PCM_OUTPUT_DEPTH - 16)
  28
  29 void init_ima_adpcm_decoder(int bit, const int *index_table);
  30 void set_decode_parameters(int channels, int32_t *init_pcmdata, int8_t *init_index);
  31 int16_t create_pcmdata(int ch, uint8_t nibble);
  32 int16_t create_pcmdata_size4(int ch, uint8_t nibble);
  33 #endif