BitmapPtr CMUCamera::getImage(bool bWait)
{
if (bWait) {
unsigned rc = WaitForSingleObject(m_pCamera->GetFrameEvent(), INFINITE);
AVG_ASSERT(rc == WAIT_OBJECT_0);
} else {
unsigned rc = WaitForSingleObject(m_pCamera->GetFrameEvent(), 0);
if (rc == WAIT_TIMEOUT) {
// No frame yet
return BitmapPtr();
}
AVG_ASSERT(rc == WAIT_OBJECT_0);
}
int rc2 = m_pCamera->AcquireImageEx(FALSE, NULL);
if (rc2 != CAM_SUCCESS) {
throw Exception(AVG_ERR_CAMERA_NONFATAL,
"CMUCamera: Could not acquire image from camera. " +
CMUErrorToString(rc2));
}
unsigned long captureBufferLength;
unsigned char* pCaptureBuffer = m_pCamera->GetRawData(&captureBufferLength);
BitmapPtr pCamBmp(new Bitmap(getImgSize(), getCamPF(), pCaptureBuffer,
captureBufferLength / getImgSize().y, false, "TempCameraBmp"));
return convertCamFrameToDestPF(pCamBmp);
}
BitmapPtr FWCamera::getImage(bool bWait)
{
#ifdef AVG_ENABLE_1394_2
bool bGotFrame = false;
unsigned char * pCaptureBuffer = 0;
dc1394video_frame_t * pFrame;
dc1394error_t err;
if (bWait) {
err = dc1394_capture_dequeue(m_pCamera, DC1394_CAPTURE_POLICY_WAIT, &pFrame);
} else {
err = dc1394_capture_dequeue(m_pCamera, DC1394_CAPTURE_POLICY_POLL, &pFrame);
}
if (err == DC1394_SUCCESS && pFrame) {
bGotFrame = true;
pCaptureBuffer = pFrame->image;
}
if (bGotFrame) {
int lineLen;
if (getCamPF() == YCbCr411) {
lineLen = getImgSize().x*1.5;
} else {
lineLen = getImgSize().x*getBytesPerPixel(getCamPF());
}
BitmapPtr pCamBmp(new Bitmap(getImgSize(), getCamPF(), pCaptureBuffer, lineLen,
false, "TempCameraBmp"));
BitmapPtr pDestBmp = convertCamFrameToDestPF(pCamBmp);
// cerr << "CamBmp: " << pCamBmp->getPixelFormat() << ", DestBmp: "
// << pDestBmp->getPixelFormat() << endl;
dc1394_capture_enqueue(m_pCamera, pFrame);
return pDestBmp;
} else {
return BitmapPtr();
}
#else
return BitmapPtr();
#endif
}
