wavemain.cpp
来自「i.mx27 soc for wince 6.0」· C++ 代码 · 共 796 行 · 第 1/2 页
CPP
796 行
{
pDeviceContext = g_pHWContext->GetInputDeviceContext(uDeviceId);
}
dwRet = pDeviceContext->GetDevCaps((PVOID)dwParam1,dwParam2);
break;
}
case WODM_GETEXTDEVCAPS:
{
DeviceContext *pDeviceContext;
if (pStreamContext)
{
pDeviceContext=pStreamContext->GetDeviceContext();
}
else
{
pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
}
dwRet = pDeviceContext->GetExtDevCaps((PVOID)dwParam1,dwParam2);
break;
}
case WODM_OPEN:
{
// DEBUGMSG(1, (TEXT("WODM_OPEN\r\n"));
DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
dwRet = pDeviceContext->OpenStream((LPWAVEOPENDESC)dwParam1, dwParam2, (StreamContext **)dwUser);
break;
}
#ifdef AUDIO_RECORDING_ENABLED
case WIDM_OPEN:
{
// DEBUGMSG(1, (TEXT("WIDM_OPEN\r\n"));
DeviceContext *pDeviceContext = g_pHWContext->GetInputDeviceContext(uDeviceId);
dwRet = pDeviceContext->OpenStream((LPWAVEOPENDESC)dwParam1, dwParam2, (StreamContext **)dwUser);
// For some reason, even we pass correct error code, waveInOpen return different value (32)
if (dwRet != MMSYSERR_NOERROR)
{
SetLastError(dwRet);
bRet = FALSE;
}
break;
}
case WIDM_CLOSE:
{
// We must stop the input DMA operation and disable all associated
// hardware components now that we've finished recording.
DeviceContext *pDeviceContext = g_pHWContext->GetInputDeviceContext(uDeviceId);
g_pHWContext->StopInputDMA();
dwRet = pStreamContext->Close();
if (dwRet==MMSYSERR_NOERROR)
{
pStreamContext->Release();
#ifdef AUDIO_IN_LIMIT_OPEN
pDeviceContext->CloseStreamCount();
#endif
}
break;
}
#endif // #ifdef AUDIO_RECORDING_ENABLED
case WODM_CLOSE:
{
// Close the audio I/O stream here (for both input and output
// streams).
//
// Note that for audio output streams, the required StopOutputDMA()
// is made in the interrupt handler when we've finished transmitting
// the last piece of the output audio stream.
dwRet = pStreamContext->Close();
// Release stream context here, rather than inside
// StreamContext::Close, so that if someone (like CMidiStream)
// has subclassed Close there's no chance that the object will
// get released out from under them.
if (dwRet==MMSYSERR_NOERROR)
{
pStreamContext->Release();
}
break;
}
case WODM_RESTART:
case WIDM_START:
{
dwRet = pStreamContext->Run();
break;
}
case WODM_PAUSE:
case WIDM_STOP:
{
dwRet = pStreamContext->Stop();
break;
}
case WODM_GETPOS:
case WIDM_GETPOS:
{
dwRet = pStreamContext->GetPos((PMMTIME)dwParam1);
break;
}
case WODM_RESET:
case WIDM_RESET:
{
dwRet = pStreamContext->Reset();
break;
}
case WODM_WRITE:
case WIDM_ADDBUFFER:
{
//DEBUGMSG(1, (TEXT("WODM_WRITE/WIDM_ADDBUFFER, Buffer=0x%x\r\n"),dwParam1);
dwRet = pStreamContext->QueueBuffer((LPWAVEHDR)dwParam1);
break;
}
case WODM_GETVOLUME:
{
PULONG pdwGain = (PULONG)dwParam1;
if (pStreamContext)
{
*pdwGain = pStreamContext->GetGain();
}
else
{
// Handle device gain in hardware
*pdwGain = g_pHWContext->GetOutputGain();
// Handle device gain in software
//DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
//*pdwGain = pDeviceContext->GetGain();
}
dwRet = MMSYSERR_NOERROR;
break;
}
case WODM_SETVOLUME:
{
LONG dwGain = dwParam1;
if (pStreamContext)
{
dwRet = pStreamContext->SetGain(dwGain);
}
else
{
// Handle device gain in hardware
dwRet = g_pHWContext->SetOutputGain(dwGain);
// Handle device gain in software
//DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
//dwRet = pDeviceContext->SetGain(dwGain);
}
break;
}
case WODM_BREAKLOOP:
{
dwRet = pStreamContext->BreakLoop();
break;
}
case WODM_SETPLAYBACKRATE:
{
WaveStreamContext *pWaveStream = (WaveStreamContext *)dwUser;
dwRet = pWaveStream->SetRate(dwParam1);
break;
}
case WODM_GETPLAYBACKRATE:
{
WaveStreamContext *pWaveStream = (WaveStreamContext *)dwUser;
dwRet = pWaveStream->GetRate((DWORD *)dwParam1);
break;
}
case MM_WOM_SETSECONDARYGAINCLASS:
{
dwRet = pStreamContext->SetSecondaryGainClass(dwParam1);
break;
}
case MM_WOM_SETSECONDARYGAINLIMIT:
{
DeviceContext *pDeviceContext;
if (pStreamContext)
{
pDeviceContext = pStreamContext->GetDeviceContext();
}
else
{
pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
}
dwRet = pDeviceContext->SetSecondaryGainLimit(dwParam1,dwParam2);
break;
}
case MM_MOM_MIDIMESSAGE:
{
CMidiStream *pMidiStream = (CMidiStream *)dwUser;
dwRet = pMidiStream->MidiMessage(dwParam1);
break;
}
// unsupported messages
case WODM_GETPITCH:
case WODM_SETPITCH:
case WODM_PREPARE:
case WODM_UNPREPARE:
case WIDM_PREPARE:
case WIDM_UNPREPARE:
default:
dwRet = MMSYSERR_NOTSUPPORTED;
}
g_pHWContext->Unlock();
// Pass the return code back via pBufOut
if (pdwResult)
{
*pdwResult = dwRet;
}
return(bRet);
}
// -----------------------------------------------------------------------------
//
// @doc WDEV_EXT
//
// @func BOOL | WAV_IOControl | Device IO control routine
//
// @parm DWORD | dwOpenData | Value returned from WAV_Open call
//
// @parm DWORD | dwCode |
// IO control code for the function to be performed. WAV_IOControl only
// supports one IOCTL value (IOCTL_WAV_MESSAGE)
//
// @parm PBYTE | pBufIn |
// Pointer to the input parameter structure (<t MMDRV_MESSAGE_PARAMS>).
//
// @parm DWORD | dwLenIn |
// Size in bytes of input parameter structure (sizeof(<t MMDRV_MESSAGE_PARAMS>)).
//
// @parm PBYTE | pBufOut | Pointer to the return value (DWORD).
//
// @parm DWORD | dwLenOut | Size of the return value variable (sizeof(DWORD)).
//
// @parm PDWORD | pdwActualOut | Unused
//
// @rdesc Returns TRUE for success, FALSE for failure
//
// @xref <t Wave Input Driver Messages> (WIDM_XXX) <nl>
// <t Wave Output Driver Messages> (WODM_XXX)
//
// -----------------------------------------------------------------------------
extern "C" BOOL WAV_IOControl(PDWORD pdwOpenData,
DWORD dwCode,
PBYTE pBufIn,
DWORD dwLenIn,
PBYTE pBufOut,
DWORD dwLenOut,
PDWORD pdwActualOut)
{
UNREFERENCED_PARAMETER(dwLenIn);
DWORD dwErr = ERROR_INVALID_PARAMETER;
// Check caller trust. If context hasn't been initialized, load from
// CeGetCallerTrust.
if (*pdwOpenData != OEM_CERTIFY_TRUST) {
if (OEM_CERTIFY_TRUST != (*pdwOpenData = CeGetCallerTrust())) {
PRINTMSG(ZONE_WARN, (TEXT("WAV_IoControl: untrusted process\n")));
SetLastError(ERROR_ACCESS_DENIED);
return FALSE;
}
}
_try
{
switch (dwCode)
{
case IOCTL_MIX_MESSAGE:
return HandleMixerMessage((PMMDRV_MESSAGE_PARAMS)pBufIn, (DWORD *)pBufOut);
case IOCTL_WAV_MESSAGE:
{
BOOL ret = TRUE;
ret = HandleWaveMessage((PMMDRV_MESSAGE_PARAMS)pBufIn, (DWORD *)pBufOut);
*pdwActualOut = sizeof(DWORD);
return ret;
}
case IOCTL_POWER_CAPABILITIES:
// tell the power manager about ourselves.
if ( pBufOut != NULL &&
dwLenOut >= sizeof(POWER_CAPABILITIES) &&
pdwActualOut != NULL)
{
PPOWER_CAPABILITIES ppc = (PPOWER_CAPABILITIES) pBufOut;
memset(ppc, 0, sizeof(POWER_CAPABILITIES));
ppc->DeviceDx = 0x11; // support D0, D4
ppc->WakeFromDx = 0x00; // No wake capability
ppc->InrushDx = 0x00; // No in rush requirement
ppc->Power[D0] = 600; // 0.6W
ppc->Power[D1] = (DWORD)PwrDeviceUnspecified;
ppc->Power[D2] = (DWORD)PwrDeviceUnspecified;
ppc->Power[D3] = (DWORD)PwrDeviceUnspecified;
ppc->Power[D4] = 0;
ppc->Latency[D0] = 0;
ppc->Latency[D1] = (DWORD)PwrDeviceUnspecified;
ppc->Latency[D2] = (DWORD)PwrDeviceUnspecified;
ppc->Latency[D3] = (DWORD)PwrDeviceUnspecified;
ppc->Latency[D4] = 0;
ppc->Flags = 0;
*pdwActualOut = sizeof(POWER_CAPABILITIES);
dwErr = ERROR_SUCCESS;
}
break;
case IOCTL_POWER_SET:
if ( pBufOut != NULL &&
dwLenOut == sizeof(CEDEVICE_POWER_STATE) &&
pdwActualOut != NULL)
{
CEDEVICE_POWER_STATE NewDx = *(PCEDEVICE_POWER_STATE)pBufOut;
if (NewDx != CurDx)
{
if (NewDx == D0)
{
g_pHWContext->PowerUp();
}
else
{
// if asked for a state we don't support, go to the next lower one
// which is D4
NewDx = D4;
g_pHWContext->PowerDown();
}
CurDx = NewDx;
*(PCEDEVICE_POWER_STATE)pBufOut = CurDx;
}
*pdwActualOut = sizeof(CEDEVICE_POWER_STATE);
dwErr = ERROR_SUCCESS;
}
break;
case IOCTL_POWER_GET:
if ( pBufOut != NULL &&
dwLenOut == sizeof(CEDEVICE_POWER_STATE) &&
pdwActualOut != NULL)
{
// just return our CurrentDx value
*(PCEDEVICE_POWER_STATE)pBufOut = CurDx;
*pdwActualOut = sizeof(CEDEVICE_POWER_STATE);
dwErr = ERROR_SUCCESS;
}
break;
case IOCTL_POWER_QUERY:
if ( pBufOut != NULL &&
dwLenOut == sizeof(CEDEVICE_POWER_STATE) &&
pdwActualOut != NULL)
{
CEDEVICE_POWER_STATE NewDx = *(PCEDEVICE_POWER_STATE)pBufOut;
if (VALID_DX(NewDx))
{
// this is a valid Dx state so return a good status
*pdwActualOut = sizeof(CEDEVICE_POWER_STATE);
dwErr = ERROR_SUCCESS;
}
}
break;
}
}
_except (GetExceptionCode() == STATUS_ACCESS_VIOLATION ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
{
RETAILMSG(1, (TEXT("EXCEPTION IN WAV_IOControl!!!!\r\n")));
SetLastError((DWORD)E_FAIL);
}
return(FALSE);
}
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