BOOL CWaveRecord::Record(WORD nChs, DWORD nSamplesPerSec, WORD wBitsPerSample)
{
MMRESULT mmResult = 0;
if(m_bRecording)
{
MyMessageBox(_T("Recording now"), eERR_ERROR);
return FALSE;
}
if((wBitsPerSample % 8))
{
MyMessageBox(_T("BPS must be multiple of 8"), eERR_ERROR);
return FALSE;
}
if(wBitsPerSample > 16)
{
wBitsPerSample = 16;
}
SaveWaveFormat(nChs, nSamplesPerSec, wBitsPerSample);
if(!AllocateMemory(m_dwQueBufferSize))
{
MyMessageBox(_T("Allocate memory failed"), eERR_ERROR);
return FALSE;
}
if(m_hParentWnd)
{
// Open the given waveform-audio input device for recording
// Using window callback mechanism
mmResult = waveInOpen(&m_hWaveIn,
m_nDeviceID,
&m_format,
(DWORD)GetSafeHwnd(),
NULL,
CALLBACK_WINDOW);
}
else
{
// Using callback function callback mechanism
mmResult = waveInOpen(&m_hWaveIn,
m_nDeviceID,
&m_format,
(DWORD)waveInProc,
(DWORD_PTR)this,
CALLBACK_FUNCTION
);
}
if(mmResult)
{
MyMessageBox(_T("waveInOpen failed"), eERR_ERROR);
Release();
return FALSE;
}
else
{
// Add input buffers to the input queue
for(int i = 0; i< m_wInQueue; i++)
{
AddInputBufferToQueue(i);
}
// Start recording
mmResult = waveInStart(m_hWaveIn);
if(mmResult)
{
MyMessageBox(_T("waveInStart failed"), eERR_ERROR);
Release();
return FALSE;
}
}
m_bRecording = TRUE;
return TRUE;
}
//
// 录制
//
BOOL CAudioCtrl::Record(UINT uiRecChannel, /*录制信道*/
DWORD dwSamplingRate,/*采样率*/
WORD wSamplingBit /*采样位*/
)
{
// 录音设备正在录音
if ( m_eStatus == ENUM_STATUS_RECORDING )
{
TRACE("recording...\r\n");
return FALSE;
}
if (m_eStatus != ENUM_STATUS_READY)
{
TRACE("AudioCtrl state failed...\r\n");
return FALSE;
}
m_bRecording = TRUE;
MMRESULT mmReturn = 0;
ASSERT((wSamplingBit%8) == 0);
if (wSamplingBit > 16)
{
wSamplingBit = 16;
}
SetWaveFormat(uiRecChannel, dwSamplingRate, wSamplingBit);
if (!SetRelateParaAfterGetWaveFormat())
{
return TRUE;
}
mmReturn = ::waveInOpen(&m_hRecord, m_uiDeviceID, &m_Format, (DWORD)GetSafeHwnd(), NULL, CALLBACK_WINDOW);
if (mmReturn)
{
TRACE("waveInOpen is failed!\r\n");
goto failed;
}
else
{
// make several input buffers and add them to the input queue
for(int i=0; i<m_wInQueu; i++)
{
AddInputBufferToQueue ( i );
}
// start recording
mmReturn = ::waveInStart ( m_hRecord );
if ( mmReturn )
{
TRACE("waveInStart is failed!\r\n");
goto failed;
}
}
m_eStatus = ENUM_STATUS_RECORDING;
return TRUE;
failed:
FreeBuffer();
return FALSE;
}