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AudioFormat_YM.h

Go to the documentation of this file.

#ifndef __AudioFormat_YM_H__
#define __AudioFormat_YM_H__

// Includes
#include "AudioFormat.h"

// Forward declares
class CYmMusic;

// AudioFormat_YM
class AudioFormat_YM:public AudioFormat
   {
   public:
      static void Register();
      static bool TestAsset(const Asset& asset);
      static AudioFormat* Create(const Asset& asset);

      AudioFormat_YM(
         const Asset& asset
         );
      
      virtual ~AudioFormat_YM();

      virtual int GetChannels();

      virtual int GetFrequency();

      virtual int GetBitsPerSample();

      virtual int GetSize();

      virtual int GetPosition();

      virtual void SetPosition(
         int position   
         );

      virtual int CopySoundChunk(
         void* buffer,  
         int bytes   
         );

      struct YmRegisters
         {
         int Channel_A_fine_tune; // 8 bits
         int Channel_A_coarse_tune; // 4 bits
         int Channel_B_fine_tune; // 8 bits
         int Channel_B_coarse_tune; // 4 bits
         int Channel_C_fine_tune; // 8 bits
         int Channel_C_coarse_tune; // 4 bits
         int Noise_generator_control; // 5 bits
         int Mixer_control_IO_enable; // 8 bits
         int Channel_A_amplitude; // 5 bits
         int Channel_B_amplitude; // 5 bits
         int Channel_C_amplitude; // 5 bits
         int Envelope_period_fine_tune; // 8 bits
         int Envelope_period_coarse_tune; // 8 bits
         int Envelope_shape; // 4 bits
         };

      YmRegisters GetRegisters(float position);

   private:
      CYmMusic* ymFile_;

      int chunkStart_;
      int chunkEnd_;
   };

#endif /* __AudioFormat_YM_H__ */

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