问题在于语音延迟随着时间逐渐增大,请教各位高手是怎么回事啊?郁闷了很久了 ,哪位大虾帮忙看一下啊
#define BUFFER_NUM 1000
#define INP_BUFFER_SIZE 640//640---20ms
#define OUTP_BUFFER_SIZE BUFFER_NUM*INP_BUFFER_SIZE
void CRecordHWndDlg::OnRealtime()
{
// filein.Open("datain.txt",CFile::modeWrite|CFile::modeCreate);
// fileout.Open("dataout.txt",CFile::modeWrite|CFile::modeCreate);
m_i=1; pBuffer1=(PBYTE)malloc(INP_BUFFER_SIZE);
pBuffer2=(PBYTE)malloc(INP_BUFFER_SIZE);
pBuffer3=(PBYTE)malloc(OUTP_BUFFER_SIZE); for(int j=0;j <OUTP_BUFFER_SIZE;j++)
pBuffer3[j]=0;//输出buffer清零 waveform.wFormatTag=WAVE_FORMAT_PCM;
waveform.nChannels=2;
waveform.nSamplesPerSec=8000;
waveform.nAvgBytesPerSec=32000;
waveform.nBlockAlign=4;
waveform.wBitsPerSample=16;
waveform.cbSize=0;
if (waveInOpen(&hWaveIn,WAVE_MAPPER,&waveform,(DWORD)this->m_hWnd,NULL,CALLBACK_WINDOW))
{
free(pBuffer1);
free(pBuffer2);
MessageBeep(MB_ICONEXCLAMATION);
AfxMessageBox("Audio can not be open!");
}
//////////////////////////////////////准备两块buffer
pWaveHdr1->lpData=(LPTSTR)pBuffer1;
pWaveHdr1->dwBufferLength=INP_BUFFER_SIZE;
pWaveHdr1->dwBytesRecorded=0;
pWaveHdr1->dwUser=0;
pWaveHdr1->dwFlags=0;
pWaveHdr1->dwLoops=1;
pWaveHdr1->lpNext=NULL;
pWaveHdr1->reserved=0; waveInPrepareHeader(hWaveIn,pWaveHdr1,sizeof(WAVEHDR)); pWaveHdr2->lpData=(LPTSTR)pBuffer2;
pWaveHdr2->dwBufferLength=INP_BUFFER_SIZE;
pWaveHdr2->dwBytesRecorded=0;
pWaveHdr2->dwUser=0;
pWaveHdr2->dwFlags=0;
pWaveHdr2->dwLoops=1;
pWaveHdr2->lpNext=NULL;
pWaveHdr2->reserved=0; waveInPrepareHeader(hWaveIn,pWaveHdr2,sizeof(WAVEHDR)); ///////////////////////////////////////////准备两块buffer waveInAddBuffer (hWaveIn, pWaveHdr1, sizeof (WAVEHDR)) ;
waveInAddBuffer (hWaveIn, pWaveHdr2, sizeof (WAVEHDR)) ;
if (waveOutOpen(&hWaveOut,WAVE_MAPPER,&waveform,(DWORD)this->m_hWnd,NULL,CALLBACK_WINDOW)) {
MessageBeep(MB_ICONEXCLAMATION);
AfxMessageBox("Audio output erro");
}
pWaveHdr3->lpData=(LPTSTR)pBuffer3;
pWaveHdr3->dwBufferLength=OUTP_BUFFER_SIZE;
pWaveHdr3->dwBytesRecorded=0;
pWaveHdr3->dwUser=0;
pWaveHdr3->dwFlags=WHDR_BEGINLOOP | WHDR_ENDLOOP;
pWaveHdr3->dwLoops=10000;
pWaveHdr3->lpNext=NULL;
pWaveHdr3->reserved=0; waveOutPrepareHeader(hWaveOut,pWaveHdr3,sizeof(WAVEHDR));
waveInStart (hWaveIn) ;
waveOutWrite (hWaveOut, pWaveHdr3, sizeof (WAVEHDR)) ; return;
}
void CRecordHWndDlg::OnMM_WIM_DATA(UINT wParam, LONG lParam)
{
// filein.Write(((PWAVEHDR) lParam)->lpData,((PWAVEHDR) lParam)->dwBytesRecorded); m_i=(m_i+1)%BUFFER_NUM; CopyMemory (pBuffer3+INP_BUFFER_SIZE*m_i , ((PWAVEHDR) lParam)->lpData,//可能是buffer1,buffer2
INP_BUFFER_SIZE) ; waveInAddBuffer (hWaveIn, (PWAVEHDR) lParam, sizeof (WAVEHDR)) ;//归还系统内存
// TRACE("done input data\n");
return ; }
#define BUFFER_NUM 1000
#define INP_BUFFER_SIZE 640//640---20ms
#define OUTP_BUFFER_SIZE BUFFER_NUM*INP_BUFFER_SIZE
void CRecordHWndDlg::OnRealtime()
{
// filein.Open("datain.txt",CFile::modeWrite|CFile::modeCreate);
// fileout.Open("dataout.txt",CFile::modeWrite|CFile::modeCreate);
m_i=1; pBuffer1=(PBYTE)malloc(INP_BUFFER_SIZE);
pBuffer2=(PBYTE)malloc(INP_BUFFER_SIZE);
pBuffer3=(PBYTE)malloc(OUTP_BUFFER_SIZE); for(int j=0;j <OUTP_BUFFER_SIZE;j++)
pBuffer3[j]=0;//输出buffer清零 waveform.wFormatTag=WAVE_FORMAT_PCM;
waveform.nChannels=2;
waveform.nSamplesPerSec=8000;
waveform.nAvgBytesPerSec=32000;
waveform.nBlockAlign=4;
waveform.wBitsPerSample=16;
waveform.cbSize=0;
if (waveInOpen(&hWaveIn,WAVE_MAPPER,&waveform,(DWORD)this->m_hWnd,NULL,CALLBACK_WINDOW))
{
free(pBuffer1);
free(pBuffer2);
MessageBeep(MB_ICONEXCLAMATION);
AfxMessageBox("Audio can not be open!");
}
//////////////////////////////////////准备两块buffer
pWaveHdr1->lpData=(LPTSTR)pBuffer1;
pWaveHdr1->dwBufferLength=INP_BUFFER_SIZE;
pWaveHdr1->dwBytesRecorded=0;
pWaveHdr1->dwUser=0;
pWaveHdr1->dwFlags=0;
pWaveHdr1->dwLoops=1;
pWaveHdr1->lpNext=NULL;
pWaveHdr1->reserved=0; waveInPrepareHeader(hWaveIn,pWaveHdr1,sizeof(WAVEHDR)); pWaveHdr2->lpData=(LPTSTR)pBuffer2;
pWaveHdr2->dwBufferLength=INP_BUFFER_SIZE;
pWaveHdr2->dwBytesRecorded=0;
pWaveHdr2->dwUser=0;
pWaveHdr2->dwFlags=0;
pWaveHdr2->dwLoops=1;
pWaveHdr2->lpNext=NULL;
pWaveHdr2->reserved=0; waveInPrepareHeader(hWaveIn,pWaveHdr2,sizeof(WAVEHDR)); ///////////////////////////////////////////准备两块buffer waveInAddBuffer (hWaveIn, pWaveHdr1, sizeof (WAVEHDR)) ;
waveInAddBuffer (hWaveIn, pWaveHdr2, sizeof (WAVEHDR)) ;
if (waveOutOpen(&hWaveOut,WAVE_MAPPER,&waveform,(DWORD)this->m_hWnd,NULL,CALLBACK_WINDOW)) {
MessageBeep(MB_ICONEXCLAMATION);
AfxMessageBox("Audio output erro");
}
pWaveHdr3->lpData=(LPTSTR)pBuffer3;
pWaveHdr3->dwBufferLength=OUTP_BUFFER_SIZE;
pWaveHdr3->dwBytesRecorded=0;
pWaveHdr3->dwUser=0;
pWaveHdr3->dwFlags=WHDR_BEGINLOOP | WHDR_ENDLOOP;
pWaveHdr3->dwLoops=10000;
pWaveHdr3->lpNext=NULL;
pWaveHdr3->reserved=0; waveOutPrepareHeader(hWaveOut,pWaveHdr3,sizeof(WAVEHDR));
waveInStart (hWaveIn) ;
waveOutWrite (hWaveOut, pWaveHdr3, sizeof (WAVEHDR)) ; return;
}
void CRecordHWndDlg::OnMM_WIM_DATA(UINT wParam, LONG lParam)
{
// filein.Write(((PWAVEHDR) lParam)->lpData,((PWAVEHDR) lParam)->dwBytesRecorded); m_i=(m_i+1)%BUFFER_NUM; CopyMemory (pBuffer3+INP_BUFFER_SIZE*m_i , ((PWAVEHDR) lParam)->lpData,//可能是buffer1,buffer2
INP_BUFFER_SIZE) ; waveInAddBuffer (hWaveIn, (PWAVEHDR) lParam, sizeof (WAVEHDR)) ;//归还系统内存
// TRACE("done input data\n");
return ; }
INP_BUFFER_SIZE) ; //////////这里 是不是要置 WaveHdr 的 dwFlags=0; ??
是不是还需要调用一次 waveInPrepareHeader ???
waveInAddBuffer (hWaveIn, (PWAVEHDR) lParam, sizeof (WAVEHDR)) ;//归还系统内存
INP_BUFFER_SIZE) ; //////////这里 是不是要置 WaveHdr 的 dwFlags=0; ??
是不是还需要调用一次 waveInPrepareHeader ???
waveInAddBuffer (hWaveIn, (PWAVEHDR) lParam, sizeof (WAVEHDR)) ;//归还系统内存
INP_BUFFER_SIZE) ;
这样可以么,会不会因为输出缓冲区使用权归操作系统而现在却在写入,导致了播放延迟越来越大呢 ?