www.pudn.com > IP_phone.rar > WaveOut.cpp

/**********************************************************/ 
/*类名：CWaveIn                                           */ 
/*简述：封装的音频播放类                                  */ 
/**********************************************************/ 
// WaveOut.cpp: implementation of the CWaveOut class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "../NC_Client.h" 
#include "WaveOut.h"   
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
#pragma comment(lib,"Winmm") 
 
DWORD CWaveOut::s_dwInstance = 0; 
 
DWORD WINAPI CWaveOut::AudioOutThreadProc(LPVOID lpParameter); 
 
CWaveOut::CWaveOut() 
{ 
	m_wChannel=1; 
	m_dwSample=WISA_POOR; 
	m_wBit=16; 
 
	m_hOut=0; 
	m_hAudioOut=0; 
	m_dwAudioOutId=0; 
	m_iBufferNum=0; 
 
	m_bThreadStart=false; 
	m_bDevOpen=false; 
	s_dwInstance++; 
} 
 
CWaveOut::~CWaveOut() 
{ 
 
} 
////////////////////////////////////////////////////////////////////// 
BOOL CWaveOut::Ini() 
{ 
	//启动监听线程 
	if (!StartThread())            
	{ 
		return false; 
	}; 
	//打开输出设备 
	if (!OpenDev()) 
	{ 
		StopThread (); 
	}; 
	return true; 
} 
////////////////////////////////////////////////////////////////////// 
BOOL CWaveOut::Release() 
{ 
	CloseDev(); 
	StopThread (); 
 
	return true; 
} 
////////////////////////////////////////////////////////////////////// 
BOOL CWaveOut::StartThread() 
{ 
	if (m_bThreadStart) 
		return false; 
 
	m_hAudioOut=CreateThread(0,0,AudioOutThreadProc,this,0,&m_dwAudioOutId); 
	if(!m_hAudioOut) 
	{ 
		AfxMessageBox("监听线程启动失败!"); 
		return false; 
	} 
	m_bThreadStart=true; 
	return true; 
} 
////////////////////////////////////////////////////////////////////// 
BOOL CWaveOut::StopThread() 
{ 
	if (!m_bThreadStart) 
		return false; 
 
	if(m_hAudioOut) 
	{ 
		int t=50; 
		DWORD ExitCode; 
		BOOL bEnd=false; 
		PostThreadMessage(m_dwAudioOutId,WM_QUIT,0,0); 
		while(t) 
		{ 
			GetExitCodeThread(m_hAudioOut,&ExitCode); 
			if(ExitCode!= STILL_ACTIVE) 
			{ 
				bEnd=true; 
				break; 
			} 
			else 
				Sleep(10); 
			t--; 
		} 
		if(!bEnd) 
		{ 
			TerminateThread(m_hAudioOut,0); 
		} 
		m_hAudioOut=0; 
	} 
	m_bThreadStart=false; 
	return true; 
} 
////////////////////////////////////////////////////////////////////// 
BOOL CWaveOut::OpenDev() 
{ 
	if (m_bDevOpen) 
		return false; 
 
	//定义音频格式 
	WAVEFORMATEX wfx; 
	wfx.wFormatTag = WAVE_FORMAT_PCM; 
	wfx.nChannels = m_wChannel; 
	wfx.nSamplesPerSec = m_dwSample; 
	wfx.nAvgBytesPerSec = m_wChannel * m_dwSample * m_wBit / 8; 
	wfx.nBlockAlign = m_wBit * m_wChannel / 8; 
	wfx.wBitsPerSample = m_wBit; 
	wfx.cbSize = 0; 
 
	m_mmr=waveOutOpen (0,WAVE_MAPPER,&wfx,0,0,WAVE_FORMAT_QUERY); 
	if(m_mmr) 
	{ 
		AfxMessageBox("waveOutOpen error!"); 
		return false; 
	} 
 
	m_mmr=waveOutOpen(&m_hOut,WAVE_MAPPER,&wfx,m_dwAudioOutId,s_dwInstance,CALLBACK_THREAD); 
	if(m_mmr) 
	{ 
		AfxMessageBox("waveOutOpen error!"); 
		return false; 
	} 
	m_bDevOpen=true; 
	m_iBufferNum=0; 
	return true; 
} 
////////////////////////////////////////////////////////////////////// 
BOOL CWaveOut::CloseDev() 
{ 
	if (!m_bDevOpen) 
		return false; 
 
	if(!m_hOut) 
	{ 
		AfxMessageBox("Device hasn't opened!"); 
		return false; 
	} 
 
	m_mmr=waveOutClose(m_hOut); 
	if(m_mmr) 
	{ 
		AfxMessageBox("waveInClose error!"); 
		return false; 
	} 
	m_hOut=0; 
	m_bDevOpen = false; 
	return true; 
} 
////////////////////////////////////////////////////////////////////// 
MMRESULT CWaveOut::GetLastMMError() 
{ 
	return m_mmr; 
} 
///////////////////////////////////////////////////////////////////////// 
CString CWaveOut::GetLastErrorString() 
{ 
	char buffer[256]; 
	memset(buffer,0,256); 
	waveInGetErrorText(m_mmr,buffer,256); 
	return buffer; 
} 
///////////////////////////////////////////////////////////////////////// 
void CWaveOut::SetBit(WORD wBit) 
{ 
	m_wBit = (wBit == 8) ? 8:16; 
} 
///////////////////////////////////////////////////////////////////////// 
void CWaveOut::SetSample(DWORD dwSample) 
{ 
	m_dwSample = dwSample; 
} 
///////////////////////////////////////////////////////////////////////// 
void CWaveOut::SetChannel(WORD wChannel) 
{ 
	m_wChannel = (m_wChannel == wChannel) ? 2:1; 
} 
///////////////////////////////////////////////////////////////////////// 
WORD CWaveOut::GetBit() 
{ 
	return m_wBit; 
} 
///////////////////////////////////////////////////////////////////////// 
DWORD CWaveOut::GetSample() 
{ 
	return m_dwSample; 
} 
///////////////////////////////////////////////////////////////////////// 
WORD CWaveOut::GetChannel() 
{ 
	return m_wChannel; 
} 
///////////////////////////////////////////////////////////////////////// 
DWORD CWaveOut::GetInstance() 
{ 
	return s_dwInstance; 
} 
///////////////////////////////////////////////////////////////////////// 
int CWaveOut::GetBufferNum() 
{ 
	int iTemp; 
	m_csLock.Lock (); 
	iTemp = m_iBufferNum; 
	m_csLock.Unlock (); 
	return iTemp; 
 
} 
////////////////////////////////////////////////////////////////////// 
void CWaveOut::BufferSub() 
{ 
	m_csLock.Lock (); 
	m_iBufferNum --; 
	m_csLock.Unlock (); 
} 
////////////////////////////////////////////////////////////////////// 
void CWaveOut::BufferAdd() 
{ 
	m_csLock.Lock (); 
	m_iBufferNum ++; 
	m_csLock.Unlock (); 
} 
////////////////////////////////////////////////////////////////////// 
BOOL CWaveOut::SetFormatByFile(CString file) 
{ 
	#pragma pack(push, 1) 
	struct FileHeader 
	{ 
		char cFlagFiff[4]; 
		unsigned __int32 iFileLen; 
		char cFlagWave[4]; 
		char cFlagFmt[4]; 
		char cResove[4]; 
		unsigned __int16 cFormat; 
		unsigned __int16 cChannel; 
		unsigned __int32 cSample; 
		unsigned __int32 cBytePerSec; 
		unsigned __int16 cByteprocess; 
		unsigned __int16 cBit; 
		char cFlagDat[4]; 
		unsigned __int32 iLenData; 
	}; 
	#pragma pack(pop) 
 
	CFile fi; 
	if (!fi.Open(file,CFile::modeRead,NULL)) 
	{ 
		return false; 
	}; 
	struct FileHeader head; 
	fi.Read ((void *)&head,sizeof (head)); 
	fi.Close (); 
 
	this->SetChannel (head.cChannel); 
	this->SetSample (head.cSample); 
	this->SetBit (head.cBit); 
	return true; 
} 
////////////////////////////////////////////////////////////////////// 
BOOL CWaveOut::Play(char* buf,UINT uSize) 
{ 
	if (!m_bDevOpen) 
		return false; 
 
	if (GetBufferNum()>PLAY_DELAY) 
	{ 
	    AfxMessageBox("Delay too big pass over!"); 
		return true; 
	} 
	char* p; 
	LPWAVEHDR pwh=new WAVEHDR; 
	if(!pwh) 
	{ 
		AfxMessageBox("alloc WAVEHDR memoyr error!"); 
		return false; 
	} 
	 
	p=new char[uSize]; 
	if(!p) 
	{ 
		AfxMessageBox("alloc data memoyr error!"); 
		return false; 
	} 
 
	CopyMemory(p,buf,uSize); 
	ZeroMemory(pwh,sizeof(WAVEHDR)); 
	pwh->dwBufferLength=uSize; 
	pwh->lpData=p; 
	m_mmr=waveOutPrepareHeader(m_hOut,pwh,sizeof(WAVEHDR)); 
  	if (m_mmr) 
	{ 
		AfxMessageBox("waveOutPrepareHeader error!"); 
		return false; 
	} 
 
	m_mmr=waveOutWrite(m_hOut,pwh,sizeof(WAVEHDR)); 
  	if (m_mmr) 
	{ 
		AfxMessageBox("waveOutWrite error!"); 
		return false; 
	} 
	m_iBufferNum ++; 
	return true; 
} 
////////////////////////////////////////////////////////////////////// 
///////////////////////////////////////////////////////////////////////////////////////////////////////////// 
//    Glogal Thread procedure for the CWaveIn class 
//    It cannot be included inside the Class 
//    
// The LPARAM is the Class pointer (this) it can be the base class CWaveIn ptr or a derived new class 
// The value of this parametre can change according the Topmost class of the process  
///////////////////////////////////////////////////////////////////////////////////////////////////////////// 
DWORD WINAPI CWaveOut::AudioOutThreadProc(LPVOID lpParameter) 
{ 
	CWaveOut *pWaveIn; 
	pWaveIn = (CWaveOut *)lpParameter; 
 
	MSG msg; 
	while(GetMessage(&msg,0,0,0)) 
	{ 
		switch(msg.message ) 
		{ 
		case WOM_OPEN: 
			break; 
		case WOM_CLOSE: 
			break; 
		case WOM_DONE: 
			WAVEHDR* pwh=(WAVEHDR*)msg.lParam; 
			waveOutUnprepareHeader((HWAVEOUT)msg.wParam,pwh,sizeof(WAVEHDR)); 
			pWaveIn->BufferSub (); 
			delete []pwh->lpData;//删除Play调用时分配的内存 
			delete pwh; 
			break; 
		} 
	} 
	TRACE("AudioInThreadProc exit.\n"); 
	return msg.wParam; 
} 
//////////////////////////////////////////////////////////////////////