int Webcam::getFrame(ColorImage &image)
{
int ret = 0;
// Dequeue a buffer.
ret = ioctl(dev, VIDIOC_DQBUF, &buf);
if (ret < 0)
{
KError("Unable to dequeue buffer", errno);
return EXIT_FAILURE;
}
// Save the image.
//uchar jpegBuf1[buf.bytesused + 420];
if (fmt.fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG)
{
/*
if (mjpegToJpeg(mem[buf.index], jpegBuf1, (int) buf.bytesused) == EXIT_SUCCESS)
image.loadFromData(jpegBuf1, buf.bytesused+420);
*/
return EXIT_FAILURE;
}
if (fmt.fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
{
image.setImage(yuvToRGB(mem[buf.index], currentWidth(), currentHeight()), currentWidth(), currentHeight());
}
// Requeue the buffer.
ret = ioctl(dev, VIDIOC_QBUF, &buf);
if (ret < 0)
{
KError("Unable to requeue buffer", errno);
return EXIT_FAILURE;
}
if(!imageNotifier->isEnabled())
imageNotifier->setEnabled(true);
return EXIT_SUCCESS;
}
HRESULT ofxBlackmagicGrabber::VideoInputFrameArrived(IDeckLinkVideoInputFrame * videoFrame, IDeckLinkAudioInputPacket * audioFrame){
IDeckLinkVideoFrame* rightEyeFrame = NULL;
IDeckLinkVideoFrame3DExtensions* threeDExtensions = NULL;
// Handle Video Frame
if(videoFrame)
{
// If 3D mode is enabled we retreive the 3D extensions interface which gives.
// us access to the right eye frame by calling GetFrameForRightEye() .
if ( (videoFrame->QueryInterface(IID_IDeckLinkVideoFrame3DExtensions, (void **) &threeDExtensions) != S_OK) ||
(threeDExtensions->GetFrameForRightEye(&rightEyeFrame) != S_OK))
{
rightEyeFrame = NULL;
}
if (threeDExtensions)
threeDExtensions->Release();
if (videoFrame->GetFlags() & bmdFrameHasNoInputSource){
ofLogError(LOG_NAME) << "Frame received (#" << frameCount << "- No input signal detected";
}
/*else
{*/
const char *timecodeString = NULL;
if (g_timecodeFormat != 0)
{
IDeckLinkTimecode *timecode;
if (videoFrame->GetTimecode(g_timecodeFormat, &timecode) == S_OK)
{
CFStringRef timecodeString;
timecode->GetString(&timecodeString);
}
}
// ofLogVerbose(LOG_NAME) << "Frame received (#" << frameCount
// << ") [" << (timecodeString != NULL ? timecodeString : "No timecode")
// << "] -" << (rightEyeFrame != NULL ? "Valid Frame (3D left/right)" : "Valid Frame")
// << "- Size: " << (videoFrame->GetRowBytes() * videoFrame->GetHeight()) << "bytes";
if (timecodeString)
free((void*)timecodeString);
yuvToRGB(videoFrame);
if(bDeinterlace) deinterlace();
pixelsMutex.lock();
bNewFrameArrived = true;
ofPixels * aux = currentPixels;
currentPixels = backPixels;
backPixels = aux;
pixelsMutex.unlock();
//}
if (rightEyeFrame)
rightEyeFrame->Release();
frameCount++;
}
#if 0 //No audio
// Handle Audio Frame
void* audioFrameBytes;
if (audioFrame)
{
if (audioOutputFile != -1)
{
audioFrame->GetBytes(&audioFrameBytes);
write(audioOutputFile, audioFrameBytes, audioFrame->GetSampleFrameCount() * g_audioChannels * (g_audioSampleDepth / 8));
}
}
#endif
return S_OK;
}
