C++ (Cpp) OpenMediaSource 예제들

예제 #1

파일: capture.cpp 프로젝트: goussepi/lab

HRESULT CCapture::StartCapture(IMFActivate *pActivate)
{
  HRESULT hr = S_OK;

  IMFMediaSource *pSource = NULL;

  EnterCriticalSection(&m_critsec);


  // Create the media source for the device.
  hr = pActivate->ActivateObject(
      __uuidof(IMFMediaSource), 
      (void**)&pSource
      );

  // Get the symbolic link. This is needed to handle device-
  // loss notifications. (See CheckDeviceLost.)

  if (SUCCEEDED(hr))
  {
    hr = pActivate->GetAllocatedString(
        MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK,
        &m_pwszSymbolicLink,
        NULL
        );
  }

  if (SUCCEEDED(hr))
  {
    hr = OpenMediaSource(pSource);
  }

  if (SUCCEEDED(hr))
  {
    // Request the first video frame.

    hr = m_pReader->ReadSample(
        (DWORD)MF_SOURCE_READER_FIRST_VIDEO_STREAM,
        0,
        NULL,
        NULL,
        NULL,
        NULL
        );
  }

  SafeRelease(&pSource);
  LeaveCriticalSection(&m_critsec);
  return hr;
}

예제 #2

파일: capture.cpp 프로젝트: AbdoSalem95/WindowsSDK7-Samples

HRESULT CCapture::StartCapture(
    IMFActivate *pActivate, 
    const WCHAR *pwszFileName, 
    const EncodingParameters& param
    )
{
    HRESULT hr = S_OK;

    IMFMediaSource *pSource = NULL;

    EnterCriticalSection(&m_critsec);

    // Create the media source for the device.
    hr = pActivate->ActivateObject(
        __uuidof(IMFMediaSource), 
        (void**)&pSource
        );

    // Get the symbolic link. This is needed to handle device-
    // loss notifications. (See CheckDeviceLost.)

    if (SUCCEEDED(hr))
    {
        hr = pActivate->GetAllocatedString(
            MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK,
            &m_pwszSymbolicLink,
            NULL
            );
    }

    if (SUCCEEDED(hr))
    {
        hr = OpenMediaSource(pSource);
    }

    // Create the sink writer 
    if (SUCCEEDED(hr))
    {
        hr = MFCreateSinkWriterFromURL(
            pwszFileName,
            NULL,
            NULL,
            &m_pWriter
            );
    }    

    // Set up the encoding parameters.
    if (SUCCEEDED(hr))
    {
        hr = ConfigureCapture(param);
    }

    if (SUCCEEDED(hr))
    {
        m_bFirstSample = TRUE;
        m_llBaseTime = 0;

        // Request the first video frame.

        hr = m_pReader->ReadSample(
            (DWORD)MF_SOURCE_READER_FIRST_VIDEO_STREAM,
            0,
            NULL,
            NULL,
            NULL,
            NULL
            );
    }

    SafeRelease(&pSource);
    LeaveCriticalSection(&m_critsec);
    return hr;
}