al_wavdec.h

/****************************************************************************
 * modules/include/audiolite/al_wavdec.h
 *
 *   Copyright 2023 Sony Semiconductor Solutions Corporation
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
 *    the names of its contributors may be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/
 
#ifndef __INCLUDE_AUDIOLITE_WAVDEC_H
#define __INCLUDE_AUDIOLITE_WAVDEC_H
 
/****************************************************************************
 * Included Files
 ****************************************************************************/
 
#include <nuttx/config.h>
#include <audiolite/al_decoder.h>
 
/****************************************************************************
 * Class Definitions
 ****************************************************************************/
 
/****************************************************************************
 * class: audiolite_wavdec
 ****************************************************************************/
 
class audiolite_wavdec : public audiolite_decoder
{
  private:
    int _chnum;
    int _bitlen;
    int _samplerate;
    bool _eof;
 
    void decode_runner();
    int parse_wavhdr();
 
  public:
    audiolite_wavdec() : audiolite_decoder("wavdec"),
                         _chnum(-1), _bitlen(-1), _samplerate(-1),
                         _eof(false) {};
    ~audiolite_wavdec(){};
 
    int start_decode();
    int stop_decode() { return OK; };
    int pause_decode() { return OK; };
    int resume_decode() { return OK; };
};
 
#endif /* __INCLUDE_AUDIOLITE_WAVDEC_H */