void AudioCapture::StopCapture()
{
_Capturer->Stop();
if(_Compressor == NULL && _Filename.Length() > 0 && _CaptureBuffer.Length() > 0)
{
Console::WriteLine(String("Saving WAV file: ") + _Filename);
//
// We've now captured our wave data. Now write it out in a wave file.
//
SaveWaveData(_CaptureBuffer.CArray(), _Capturer->BytesCaptured(), _Capturer->MixFormat(), _Filename);
}
//
// Now shut down the capturer and release it we're done.
//
_Capturer->Shutdown();
SafeRelease(&_Capturer);
SafeRelease(&_CaptureDevice);
//CoUninitialize();
}
//
// The core of the sample.
//
// Parse the command line, interpret the input parameters, pick an audio device then capture data from that device.
// When done, write the data to a file.
//
int wmain(int argc, wchar_t* argv[])
{
int result = 0;
IMMDevice *device = NULL;
bool isDefaultDevice;
ERole role;
printf("WASAPI Capture Shared Event Driven Sample\n");
printf("Copyright (c) Microsoft. All Rights Reserved\n");
printf("\n");
if (!ParseCommandLine(argc, argv, CmdLineArgs, CmdLineArgLength))
{
result = -1;
goto Exit;
}
//
// Now that we've parsed our command line, do some semantic checks.
//
//
// First off, show the help for the app if the user asked for it.
//
if (ShowHelp)
{
Help(argv[0]);
goto Exit;
}
//
// The user can only specify one of -console, -communications or -multimedia or a specific endpoint.
//
if (((UseConsoleDevice != 0) + (UseCommunicationsDevice != 0) + (UseMultimediaDevice != 0) + (OutputEndpoint != NULL)) > 1)
{
printf("Can only specify one of -Console, -Communications or -Multimedia\n");
result = -1;
goto Exit;
}
//
// A GUI application should use COINIT_APARTMENTTHREADED instead of COINIT_MULTITHREADED.
//
HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
if (FAILED(hr))
{
printf("Unable to initialize COM: %x\n", hr);
result = hr;
goto Exit;
}
//
// Now that we've parsed our command line, pick the device to capture.
//
if (!PickDevice(&device, &isDefaultDevice, &role))
{
result = -1;
goto Exit;
}
printf("Capture audio data for %d seconds\n", TargetDurationInSec);
//
// Instantiate a capturer and capture sounds for TargetDuration seconds
//
// Configure the capturer to enable stream switching on the specified role if the user specified one of the default devices.
//
{
CWASAPICapture *capturer = new (std::nothrow) CWASAPICapture(device, isDefaultDevice, role);
if (capturer == NULL)
{
printf("Unable to allocate capturer\n");
return -1;
}
if (capturer->Initialize(TargetLatency))
{
//
// We've initialized the capturer. Once we've done that, we know some information about the
// mix format and we can allocate the buffer that we're going to capture.
//
//
// The buffer is going to contain "TargetDuration" seconds worth of PCM data. That means
// we're going to have TargetDuration*samples/second frames multiplied by the frame size.
//
size_t captureBufferSize = capturer->SamplesPerSecond() * TargetDurationInSec * capturer->FrameSize();
BYTE *captureBuffer = new (std::nothrow) BYTE[captureBufferSize];
if (captureBuffer == NULL)
{
printf("Unable to allocate capture buffer\n");
return -1;
}
if (capturer->Start(captureBuffer, captureBufferSize))
{
do
{
printf(".");
Sleep(1000);
} while (--TargetDurationInSec);
printf("\n");
capturer->Stop();
//
// We've now captured our wave data. Now write it out in a wave file.
//
SaveWaveData(captureBuffer, capturer->BytesCaptured(), capturer->MixFormat());
//
// Now shut down the capturer and release it we're done.
//
capturer->Shutdown();
SafeRelease(&capturer);
}
delete []captureBuffer;
}
}
Exit:
SafeRelease(&device);
CoUninitialize();
return 0;
}
