#if !defined _MAKEWAVE_H
#define _MAKEWAVE_H

int makewave(unsigned char * buffer, DWORD size);
int myplaysound(unsigned char * buffer, DWORD size);

class cbhrecord
{
public:
	unsigned char * tbuffer;
	DWORD tbsize;
	unsigned char * buf1;
	DWORD bsize;
	unsigned char * buf2;
	WAVEFORMATEX waveformat;
	HWAVEIN hwavein;
	WAVEHDR pwh1,pwh2;
	int state;
	DWORD rsize;
	double noiselevel;
	cbhrecord()
	{	state = 0;
		tbsize = 4096*128;
		bsize = 4096;
		rsize = 0;
		tbuffer = new unsigned char[tbsize];
		buf1 = new unsigned char[bsize];
		buf2 = new unsigned char[bsize];
		waveformat.wFormatTag=WAVE_FORMAT_PCM;
		waveformat.nChannels=1;
		waveformat.nSamplesPerSec = 44100;
		waveformat.nAvgBytesPerSec = 44100;
		waveformat.nBlockAlign = 1;
		waveformat.wBitsPerSample = 8;
		waveformat.cbSize = 0;
		pwh1.dwBufferLength=bsize;
		pwh1.dwFlags=0;
		pwh1.lpData=(char *)buf1;
		pwh2.dwBufferLength=bsize;
		pwh2.dwFlags=0;
		pwh2.lpData=(char *)buf2;
	};
	int start(HWND hWnd);
	int resycle(DWORD p);
	int stop();
	int isnoise(unsigned char * buf, DWORD size);
	~cbhrecord(){
		if(state)
			stop();
		delete []tbuffer;
		delete []buf1;
		delete []buf2;
	}
};

class cbhanalysis
{
public:
	double * pr;
	int effect;
	int tmsize;
	double * fbuffer;
	int * noise;
	unsigned char * samplewave;
	int samplesize;
	cbhanalysis(){
		effect = 0;
		tmsize = 0;
		fbuffer = new double[512];
		noise = new int[512];
		samplewave = new unsigned char[1000];
		pr = new double[16384];
	};
	~cbhanalysis(){
		delete []fbuffer;
		delete []noise;
		delete []samplewave;
		delete []pr;
	};
	int isnoise(unsigned char * buffer, int size, double & freq);
	void calculate(unsigned char * buffer, int size);
};

void drawcurve(CDC &myDC, CRect &rect, double * buffer, unsigned int size, int pos=0, 
			   int pnum=0, double *pks=NULL);

void drawcurve(CDC &myDC, CRect &rect, unsigned char * buffer, unsigned int size);
double peakvalue(double * pr, int n);
int findpeaks(double * pr, double * peaks);
double getfreq(int peaknumber, double * peaks);
void playfreq(int tmsize, double * fbuffer);
double searchfreq(double * fbuffer, double &f);

#endif //!defined _MAKEWAVE_H