DirectXSoundDriver.hh

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#ifndef DIRECTXSOUNDDRIVER_HH
#define DIRECTXSOUNDDRIVER_HH
#ifdef _WIN32

#include "SoundDriver.hh"
#include "noncopyable.hh"
#ifdef WIN32_LEAN_AND_MEAN
#undef WIN32_LEAN_AND_MEAN // Needed for <dsound.h>
#endif
#define DIRECTSOUND_VERSION 0x0500
#include <windows.h>
#include <dsound.h>

namespace openmsx {

class DirectXSoundDriver : public SoundDriver, private noncopyable
{
public:
        DirectXSoundDriver(unsigned sampleRate, unsigned bufferSize);
        virtual ~DirectXSoundDriver();

        virtual void mute();
        virtual void unmute();

        virtual unsigned getFrequency() const;
        virtual unsigned getSamples() const;

        virtual void uploadBuffer(short* buffer, unsigned len);

private:
        void dxClear();
        int dxCanWrite(unsigned start, unsigned size);
        void dxWriteOne(short* buffer, unsigned lockSize);

        enum DxState { DX_SOUND_DISABLED, DX_SOUND_ENABLED, DX_SOUND_RUNNING };
        DxState state;
        unsigned bufferOffset;
        unsigned bufferSize;
        unsigned fragmentSize;
        int skipCount;
        LPDIRECTSOUNDBUFFER primaryBuffer;
        LPDIRECTSOUNDBUFFER secondaryBuffer;
        LPDIRECTSOUND directSound;

        unsigned frequency;
};

} // namespace openmsx

#endif // _WIN32
#endif // DIRECTXSOUNDDRIVER_HH