C++ (Cpp) capGetAudioFormat Beispiele

Beispiel #1

Datei: mcivideograbber.cpp Projekt: Bjoernke/livecode

void CWinVideoGrabber::getAudioFormat(int *r_channels, int *r_bits_per_sample, int *r_sample_rate)
{
	if (!inited)
		return;

	WAVEFORMATEX t_wave_format;
	capGetAudioFormat(videowindow, &t_wave_format, sizeof(WAVEFORMATEX));

	*r_channels = t_wave_format . nChannels;
	*r_bits_per_sample = t_wave_format . wBitsPerSample;
	*r_sample_rate = t_wave_format . nSamplesPerSec;
}

Beispiel #2

Datei: mcivideograbber.cpp Projekt: Bjoernke/livecode

void CWinVideoGrabber::setAudioFormat(int p_channels, int p_bits_per_sample, int p_sample_rate)
{
	if (!inited)
		return;

	WAVEFORMATEX t_wave_format;
	capGetAudioFormat(videowindow, &t_wave_format, sizeof(WAVEFORMATEX));

	t_wave_format . nChannels = p_channels;
	t_wave_format . wBitsPerSample = p_bits_per_sample;
	t_wave_format . nSamplesPerSec = p_sample_rate;

	BOOL t_result;
	t_result = capSetAudioFormat(videowindow, &t_wave_format, sizeof(t_wave_format));
}

Beispiel #3

Datei: MMCapture.cpp Projekt: JesperMikkelsen/Big-Numbers

void MMCapture::captureInit(UINT framesPerSecond, UINT audioBufferSize) {
  DWORD style = WS_CHILD;

  m_captureWindow = capCreateCaptureWindow(_T("my capture window"), style,0,0,640,480,m_receiver.getWindow(),1);
  if(m_captureWindow == NULL) {
    throwException(_T("%s:Cannot create CaptureWindow:%s"),__TFUNCTION__,getLastErrorText().cstr());
  }

  try {
    CHECKRESULT(capSetUserData(  m_captureWindow, this));
    if(captureVideo()) {
      CHECKRESULT(capDriverConnect(m_captureWindow, 0   ));
      m_webCamConnected = true;
    }

    CAPTUREPARMS param;

    CHECKRESULT(capCaptureGetSetup(m_captureWindow,&param,sizeof(param)));
    param.dwRequestMicroSecPerFrame = 1000000 / framesPerSecond;
    param.fYield            = TRUE;
    param.AVStreamMaster    = AVSTREAMMASTER_AUDIO; // AVSTREAMMASTER_NONE;
    param.dwAudioBufferSize = audioBufferSize;

    CHECKRESULT(capCaptureSetSetup(m_captureWindow,&param,sizeof(param)));
    if(captureAudio()) {
      int audioFormatSize = capGetAudioFormat(m_captureWindow,&m_audioFormat, sizeof(m_audioFormat));
      CHECKRESULT(capSetCallbackOnWaveStream( m_captureWindow, captureWaveStreamCallback));
    }
    if(captureVideo()) {
      int videoFormatSize = capGetVideoFormat(m_captureWindow,&m_videoFormat, sizeof(m_videoFormat));
      CHECKRESULT(capSetCallbackOnVideoStream(m_captureWindow, captureVideoStreamCallback));
      CHECKRESULT(capSetCallbackOnFrame(      m_captureWindow, captureFrameCallback));
    }
    CHECKRESULT(capSetCallbackOnStatus(     m_captureWindow, captureStatusCallback));
    CHECKRESULT(capSetCallbackOnCapControl( m_captureWindow, captureControlCallback));
    CHECKRESULT(capSetCallbackOnError(      m_captureWindow, captureErrorCallback));

    if(captureAudio() && m_playAudio) {
      m_audioThread = new AudioPlayerThread(*this); TRACE_NEW(m_audioThread);
      m_audioThread->start();
    }
  } catch(...) {
    captureCleanup();
    throw;
  }
}