wav_file.h

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/*//////////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2004-2005 Intel Corporation. All Rights Reserved.
//
*/

#ifndef __WAV_FILE_H
#define __WAV_FILE_H

#include "audio_file.h"
#include "vm_types.h"

class WavFile: public AudioFile
{
public:
  struct Info
  {
    vm_var32 format_tag;  /// 1 = PCM
    vm_var32 sample_rate; /// f.e. 44100
    vm_var32 resolution;  ///  8,16,32 bits, etc
    vm_var32 channels_number;
    vm_var32 channel_mask; ///

  };
public:
  WavFile();
  ~WavFile();

  virtual int Open(vm_char* p_filename, unsigned int mode);
  virtual int Close();
  virtual int Write(void * p_data, size_t size);
  virtual int Read(void * p_data, size_t size);

  virtual int SetInfo(Info* p_info);
  virtual int GetInfo(Info* p_info);

protected:

  void *        m_file_handle;
  vm_var32      m_open_mode;
  vm_var32      m_is_first_time;
  vm_var32      m_is_info_valid;
  Info          m_info;

  vm_var32  m_data_size;
  vm_var32  m_riff_size;

protected:

    int           ReadHeaderInfo();
};


#endif