DirectXSoundDriver.hh

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#ifndef DIRECTXSOUNDDRIVER_HH
#define DIRECTXSOUNDDRIVER_HH
#ifdef _WIN32

#include "SoundDriver.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 final : public SoundDriver
{
public:
        DirectXSoundDriver(const DirectXSoundDriver&) = delete;
        DirectXSoundDriver& operator=(const DirectXSoundDriver&) = delete;

        DirectXSoundDriver(unsigned sampleRate, unsigned bufferSize);
        ~DirectXSoundDriver();

        void mute() override;
        void unmute() override;

        unsigned getFrequency() const override;
        unsigned getSamples() const override;

        void uploadBuffer(int16_t* buffer, unsigned len) override;

private:
        void dxClear();
        int dxCanWrite(unsigned start, unsigned size);
        void dxWriteOne(int16_t* 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