#pragma once

#define WIN32_LEAN_AND_MEAN
#define WIN32_EXTRA_LEAN
#include "windows.h"
#include "mmsystem.h"
#include "mmreg.h"

#define USE_SOUND_THREAD

#define SAMPLE_RATE 44100
#define MAX_SAMPLES	SAMPLE_RATE*2*60*4

#pragma bss_seg(".synthbss")
static float		lpSoundBuffer[MAX_SAMPLES];
static HWAVEOUT	hWaveOut;

#pragma data_seg(".wavefmt")
WAVEFORMATEX WaveFMT =
{
	WAVE_FORMAT_IEEE_FLOAT,
	2, // channels
	SAMPLE_RATE, // samples per sec
	SAMPLE_RATE*4*2, // bytes per sec
	8, // block alignment;
	32, // bits per sample
	0 // extension not needed
};

#pragma data_seg(".wavehdr")
WAVEHDR WaveHDR = 
{
	(LPSTR)lpSoundBuffer, 
	MAX_SAMPLES*4, 
	0, 
	0, 
	0, 
	0, 
	0, 
	0
};

#pragma data_seg(".mmtime")
MMTIME MMTime = 
{ 
	TIME_SAMPLES,
	0
};

extern "C" 
{
	void _4klang_render(float*);
	
#ifdef USE_SOUND_THREAD
	#pragma code_seg(".sndthrd")
	DWORD WINAPI SoundThread( LPVOID lpParam )
	{
		_4klang_render(lpSoundBuffer);
		return 0;
	}
#endif

	#pragma code_seg(".initsnd")
	__forceinline void InitSound()
	{
#ifdef USE_SOUND_THREAD
		CreateThread(0, 0, SoundThread, 0, 0, 0);
#else
		_4klang_render(lpSoundBuffer);
#endif
		waveOutOpen			( &hWaveOut, WAVE_MAPPER, &WaveFMT, NULL, 0, CALLBACK_NULL );
		waveOutPrepareHeader( hWaveOut, &WaveHDR, sizeof(WaveHDR) );
		waveOutWrite		( hWaveOut, &WaveHDR, sizeof(WaveHDR) );	
	}
	
	#pragma code_seg(".sample")
	__forceinline int get_Sample()
	{
		waveOutGetPosition(hWaveOut, &MMTime, sizeof(MMTIME));
		return (MMTime.u.sample);
	}
}