mixing.h

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//
// mixing.h
//
#if !defined(__MIXING_H__)
#define __MIXING_H__

#include "opstruct.h"
//#include "epocglue.h"
#include "6581_.h"

//
// constants
//
static const int maxLogicalVoices = 4;
static const int mix8monoMiddleIndex = 256*maxLogicalVoices/2;
static const int mix8stereoMiddleIndex = 256*(maxLogicalVoices/2)/2;
static const int mix16monoMiddleIndex = 256*maxLogicalVoices/2;
static const int mix16stereoMiddleIndex = 256*(maxLogicalVoices/2)/2;


//
// class Mixer
//
class Mixer// : public sidEmuBase
        {

        friend emuEngine;
        
  public:
        Mixer(emuEngine* aEmuEngine, sidEmu* aSidEmu);
        ~Mixer();
        void MixerInit(bool threeVoiceAmplify, ubyte zero8, uword zero16);
        inline void syncEm();
        inline void* fillFunc(void* buffer, udword bufferLen) { return (this->*sidEmuFillFunc)(buffer, bufferLen); }
        
  public:
        void* fill8bitMono( void* buffer, udword numberOfSamples );
        void* fill8bitMonoControl( void* buffer, udword numberOfSamples );
        void* fill8bitStereo( void* buffer, udword numberOfSamples );
        void* fill8bitStereoControl( void* buffer, udword numberOfSamples );
        void* fill8bitStereoSurround( void* buffer, udword numberOfSamples );
        void* fill8bitsplit( void* buffer, udword numberOfSamples );
        void* fill16bitMono( void* buffer, udword numberOfSamples );
        void* fill16bitMonoControl( void* buffer, udword numberOfSamples );
        void* fill16bitStereo( void* buffer, udword numberOfSamples );
        void* fill16bitStereoControl( void* buffer, udword numberOfSamples );
        void* fill16bitStereoSurround( void* buffer, udword numberOfSamples );
        void* fill16bitsplit( void* buffer, udword numberOfSamples );
  public:
//void* fill8bitMono(void*, udword); // only need one fill()-prototype here
//      void* (*sidEmuFillFunc)(void*, udword); // default
        void* (Mixer::*sidEmuFillFunc)(void*, udword); // default

  private:
        sidEmu* iTheSidEmu;
    //
        ubyte mix8mono[256*maxLogicalVoices];
        ubyte mix8stereo[256*(maxLogicalVoices/2)];
        uword mix16mono[256*maxLogicalVoices];
        uword mix16stereo[256*(maxLogicalVoices/2)];

        sbyte *signedPanMix8;
        sword *signedPanMix16;

        ubyte zero8bit;   // ``zero''-sample
        uword zero16bit;  // either signed or unsigned
        udword splitBufferLen;

        Sample* iTheSampler;
        
//      sidOperator& optr1, optr2, optr3;          // -> 6581_.cc
//      uword& voice4_gainLeft, voice4_gainRight;
        
        };



#endif // MIXING

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