www.pudn.com > scope_input_sound_class.rar > Soundin.h

// Sound.h: interface for the CSoundIn class. 
// 
////////////////////////////////////////////////////////////////////// 
/* 
    
	    This program is Copyright  Developped by Yannick Sustrac 
                   yannstrc@mail.dotcom.fr 
		        http://www.mygale.org/~yannstrc/ 
  
 
This program is free software; you can redistribute it and/or modify it under the terms 
of the GNU General Public License as published by the Free Software Foundation; either 
version 2 of the License, or (at your option) any later version. 
 
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
See the GNU General Public License for more details. 
 
You should have received a copy of the GNU General Public License along with this program; 
if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
 
*/ 
//////////////////////////////////////////////////////////////////////////////////////////     
 
 
#if !defined(AFX_SOUND_H__69C928C4_1F19_11D2_8045_30460BC10000__INCLUDED_) 
#define AFX_SOUND_H__69C928C4_1F19_11D2_8045_30460BC10000__INCLUDED_ 
 
#if _MSC_VER >= 1000 
#pragma once 
#endif // _MSC_VER >= 1000 
 
#include  
 
#define MAX_SAMPLES 8192   //>>>>>>>> must also be defined in CFft 
#define MAX_VOIE 2 
#define MAX_SIZE_SAMPLES  1  // WORD 
#define MAX_SIZE_INPUT_BUFFER   MAX_SAMPLES*MAX_VOIE*MAX_SIZE_SAMPLES  
#define DEFAULT_CAL_OFFSET -395 // >>>>> depends of you sound card 
#define DEFAULT_CAL_GAIN   1.0 
 
 
class CSoundIn   
{ 
public: 
 
	// used for int FFT 
	SHORT  InputBuffer[MAX_SIZE_INPUT_BUFFER]; 
 
	WAVEINCAPS		m_WaveInDevCaps; 
    HWAVEIN			m_WaveIn; 
	WAVEHDR			m_WaveHeader; 
    WAVEFORMATEX	m_WaveFormat; 
	 
	short m_CalOffset; 
	double m_CalGain; 
 
 
	HANDLE m_WaveInEvent; 
	CWinThread * m_WaveInThread; 
	BOOL m_TerminateThread; 
 
	UINT m_WaveInSampleRate; 
	int m_NbMaxSamples; 
	UINT m_SizeRecord; 
	WORD 	m_Toggle; /*0 or 1 according the buffer currently loaded*/ 
 
public :	 
	void StartMic(); 
	void StopMic(); 
	void CloseMic(); 
	void AddBuffer(); 
 
public : 
	virtual void RazBuffers(); 
    virtual void ComputeSamples(SHORT *);  // calibrate the samples for the basse class  
											// this function is overloaded by the parent 
											// it need to call this function first to calibrate them 
 
 
 
////////////////////////////////////////////////////// 
// functions members 
	MMRESULT OpenMic(); 
	void WaveInitFormat(   WORD    nCh, // number of channels (mono, stereo) 
							DWORD   nSampleRate, // sample rate 
							WORD    BitsPerSample); 
	//void CALLBACK waveInProc( HWAVEIN hwi,  UINT uMsg,   DWORD dwInstance,   DWORD dwParam1, DWORD dwParam2 ); 
	 
	CSoundIn(); 
	virtual ~CSoundIn(); 
 
}; 
 
// global Thread procedure  
	UINT WaveInThreadProc( LPVOID pParam); 
 
#endif