HRESULT TestPattern::CreateFrame(IDeckLinkVideoFrame** frame, void (*fillFunc)(IDeckLinkVideoFrame*))
{
HRESULT result;
int bytesPerPixel = GetBytesPerPixel(m_config->m_pixelFormat);
IDeckLinkMutableVideoFrame* newFrame = NULL;
IDeckLinkMutableVideoFrame* referenceFrame = NULL;
IDeckLinkVideoConversion* frameConverter = NULL;
*frame = NULL;
result = m_deckLinkOutput->CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth * bytesPerPixel, m_config->m_pixelFormat, bmdFrameFlagDefault, &newFrame);
if (result != S_OK)
{
fprintf(stderr, "Failed to create video frame\n");
goto bail;
}
if (m_config->m_pixelFormat == bmdFormat8BitYUV)
{
fillFunc(newFrame);
}
else
{
// Create a black frame in 8 bit YUV and convert to desired format
result = m_deckLinkOutput->CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth * 2, bmdFormat8BitYUV, bmdFrameFlagDefault, &referenceFrame);
if (result != S_OK)
{
fprintf(stderr, "Failed to create reference video frame\n");
goto bail;
}
fillFunc(referenceFrame);
frameConverter = CreateVideoConversionInstance();
result = frameConverter->ConvertFrame(referenceFrame, newFrame);
if (result != S_OK)
{
fprintf(stderr, "Failed to convert frame\n");
goto bail;
}
}
*frame = newFrame;
newFrame = NULL;
bail:
if (referenceFrame != NULL)
referenceFrame->Release();
if (frameConverter != NULL)
frameConverter->Release();
if (newFrame != NULL)
newFrame->Release();
return result;
}
SignalGenerator3DVideoFrame* CSignalGeneratorDlg::CreateBlackFrame ()
{
IDeckLinkMutableVideoFrame* referenceBlack = NULL;
IDeckLinkMutableVideoFrame* scheduleBlack = NULL;
HRESULT hr;
BMDPixelFormat pixelFormat;
int bytesPerPixel;
IDeckLinkVideoConversion* frameConverter = NULL;
SignalGenerator3DVideoFrame* ret = NULL;
pixelFormat = (BMDPixelFormat)m_pixelFormatCombo.GetItemData(m_pixelFormatCombo.GetCurSel());
bytesPerPixel = GetBytesPerPixel(pixelFormat);
hr = m_deckLinkOutput->CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth*bytesPerPixel, pixelFormat, bmdFrameFlagDefault, &scheduleBlack);
if (hr != S_OK)
goto bail;
if (pixelFormat == bmdFormat8BitYUV)
{
FillBlack(scheduleBlack);
}
else
{
hr = m_deckLinkOutput->CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth*2, bmdFormat8BitYUV, bmdFrameFlagDefault, &referenceBlack);
if (hr != S_OK)
goto bail;
FillBlack(referenceBlack);
hr = CoCreateInstance(CLSID_CDeckLinkVideoConversion, NULL, CLSCTX_ALL, IID_IDeckLinkVideoConversion, (void**)&frameConverter);
if (hr != S_OK)
goto bail;
hr = frameConverter->ConvertFrame(referenceBlack, scheduleBlack);
if (hr != S_OK)
goto bail;
}
ret = new SignalGenerator3DVideoFrame(scheduleBlack);
bail:
if (referenceBlack)
referenceBlack->Release();
if (scheduleBlack)
scheduleBlack->Release();
if (frameConverter)
frameConverter->Release();
return ret;
}
