audiorec.h

一个VC实现的,用G.729a实现的语言对讲的例子

// AudioRec.h: interface for the CAudioRec class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_AUDIOREC_H__E547A2E3_A085_4E78_B52C_67A5C3C83A6F__INCLUDED_)
#define AFX_AUDIOREC_H__E547A2E3_A085_4E78_B52C_67A5C3C83A6F__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define NUM_BUF 10
#define SAMPLE_PER_PACK 240
void waveInErrorMsg(MMRESULT mmr,char* szTitle);

class CAudioRec  
{
public:
	BOOL Destroy();
	BOOL Create(WAVEFORMATEX *pwf,DWORD dwCallBack,DWORD dwInst,DWORD fdwOpen ,DWORD dwBufSize);
	BOOL Start();
	BOOL Stop();
	CAudioRec();
	virtual ~CAudioRec();

	BOOL OpenDev(WAVEFORMATEX* pfmt,DWORD dwCallback,DWORD dwCallbackInstance,DWORD fdwOpen);
	operator HWAVEIN() const;
	BOOL CloseDev();
	void SetLastMMError(MMRESULT mmr);
	MMRESULT GetLastMMError();
	
protected:
	WAVEHDR* m_pHdr;	
	BOOL FreeBuffer();
	BOOL AllocBuffer();
	UINT m_nBufSize;

protected:
	MMRESULT m_mmr;	
	HWAVEIN m_hIn;
};

#endif // !defined(AFX_AUDIOREC_H__E547A2E3_A085_4E78_B52C_67A5C3C83A6F__INCLUDED_)