/*
* Do actual capturing
* Called from inside the thread
*/
int ThorlabsUSBCam::ThreadRun (void)
{
MM::MMTime startFrame = GetCurrentMMTime();
DWORD dwRet = WaitForSingleObject(hEvent, 2000);
if (dwRet == WAIT_TIMEOUT)
{
return ERR_THORCAM_LIVE_TIMEOUT;
}
else if (dwRet == WAIT_OBJECT_0)
{
memcpy(img_.GetPixelsRW(),
cameraBuf,
img_.Width()*img_.Height()*img_.Depth());
int ret = InsertImage();
MM::MMTime frameInterval = GetCurrentMMTime() - startFrame;
if (frameInterval.getMsec() > 0.0)
framesPerSecond = 1000.0 / frameInterval.getMsec();
return ret;
}
else
{
ostringstream os;
os << "Unknown event status " << dwRet;
LogMessage(os.str());
return ERR_THORCAM_LIVE_UNKNOWN_EVENT;
}
};
bool VariLC::Busy()
{
if (delay.getMsec() > 0.0) {
MM::MMTime interval = GetCurrentMMTime() - changedTime_;
if (interval.getMsec() < delay.getMsec() ) {
return true;
}
}
return false;
}
bool FilterWheel::Busy()
{
MM::MMTime elapsed = GetCurrentMMTime() - lastMoveTime_;
long msPerPosition;
switch (speed_) {
case 3:
msPerPosition = 40;
break;
case 2:
msPerPosition = 66;
break;
case 1:
msPerPosition = 100;
break;
case 0:
default:
msPerPosition = 400;
break;
}
long waitTimeMs = (long) (posMoved_ * msPerPosition + GetDelayMs());
return elapsed.getMsec() < waitTimeMs;
}
int BitFlowCamera::LiveThread::svc()
{
stopRunning_ = false;
running_ = true;
imageCounter_ = 0;
// put the hardware into a continuous acqusition state
while (true) {
if (stopRunning_)
break;
int ret = cam_->SnapImage();
if (ret != DEVICE_OK) {
char txt[1000];
sprintf(txt, "BitFlow live thread: ImageSnap() error %d", ret);
cam_->GetCoreCallback()->LogMessage(cam_, txt, false);
break;
}
char label[MM::MaxStrLength];
cam_->GetLabel(label);
MM::MMTime timestamp = cam_->GetCurrentMMTime();
Metadata md;
MetadataSingleTag mstStartTime(MM::g_Keyword_Metadata_StartTime, label, true);
mstStartTime.SetValue(CDeviceUtils::ConvertToString(cam_->startTime_.getMsec()));
md.SetTag(mstStartTime);
MetadataSingleTag mstElapsed(MM::g_Keyword_Elapsed_Time_ms, label, true);
MM::MMTime elapsed = timestamp - cam_->startTime_;
mstElapsed.SetValue(CDeviceUtils::ConvertToString(elapsed.getMsec()));
md.SetTag(mstElapsed);
MetadataSingleTag mstCount(MM::g_Keyword_Metadata_ImageNumber, label, true);
mstCount.SetValue(CDeviceUtils::ConvertToString(imageCounter_));
md.SetTag(mstCount);
// insert all channels
for (unsigned i=0; i<cam_->GetNumberOfChannels(); i++)
{
char buf[MM::MaxStrLength];
MetadataSingleTag mstChannel(MM::g_Keyword_CameraChannelIndex, label, true);
snprintf(buf, MM::MaxStrLength, "%d", i);
mstChannel.SetValue(buf);
md.SetTag(mstChannel);
MetadataSingleTag mstChannelName(MM::g_Keyword_CameraChannelName, label, true);
cam_->GetChannelName(i, buf);
mstChannelName.SetValue(buf);
md.SetTag(mstChannelName);
ret = cam_->GetCoreCallback()->InsertImage(cam_, cam_->GetImageBuffer(i),
cam_->GetImageWidth(),
cam_->GetImageHeight(),
cam_->GetImageBytesPerPixel(),
md.Serialize().c_str());
if (ret == DEVICE_BUFFER_OVERFLOW) {
cam_->GetCoreCallback()->ClearImageBuffer(cam_);
cam_->GetCoreCallback()->InsertImage(cam_, cam_->GetImageBuffer(i),
cam_->GetImageWidth(),
cam_->GetImageHeight(),
cam_->GetImageBytesPerPixel(),
md.Serialize().c_str());
}
else if (ret != DEVICE_OK) {
cam_->GetCoreCallback()->LogMessage(cam_, "BitFlow thread: error inserting image", false);
break;
}
}
imageCounter_++;
if (numImages_ >=0 && imageCounter_ >= numImages_) {
cam_->bfDev_.StopContinuousAcq();
break;
}
}
running_ = false;
return 0;
}
/**
* Inserts a multi-channel frame in the buffer.
*/
bool CircularBuffer::InsertMultiChannel(const unsigned char* pixArray, unsigned numChannels, unsigned width, unsigned height, unsigned byteDepth, const Metadata* pMd) throw (CMMError)
{
MMThreadGuard guard(g_insertLock);
static unsigned long previousTicks = 0;
bool notOverflowed;
ImgBuffer* pImg;
unsigned long singleChannelSize = (unsigned long)width * height * byteDepth;
{
MMThreadGuard guard(g_bufferLock);
if (previousTicks > 0)
estimatedIntervalMs_ = GetClockTicksMs() - previousTicks;
else
estimatedIntervalMs_ = 0;
// check image dimensions
if (width != width_ || height != height_ || byteDepth != pixDepth_)
throw CMMError("Incompatible image dimensions in the circular buffer", MMERR_CircularBufferIncompatibleImage);
notOverflowed = (long)frameArray_.size() - (insertIndex_ - saveIndex_) > 0;
if (!notOverflowed) {
// buffer overflow
overflow_ = true;
return false;
}
}
for (unsigned i=0; i<numChannels; i++)
{
Metadata md;
{
MMThreadGuard guard(g_bufferLock);
// check if the requested (channel, slice) combination exists
// we assume that all buffers are pre-allocated
pImg = frameArray_[insertIndex_ % frameArray_.size()].FindImage(i, 0);
if (!pImg)
return false;
if (pMd)
{
// TODO: the same metadata is inserted for each channel ???
// Perhaps we need to add specific tags to each channel
md = *pMd;
}
std::string cameraName = md.GetSingleTag("Camera").GetValue();
if (imageNumbers_.end() == imageNumbers_.find(cameraName))
{
imageNumbers_[cameraName] = 0;
}
// insert image number.
md.put(MM::g_Keyword_Metadata_ImageNumber, CDeviceUtils::ConvertToString(imageNumbers_[cameraName]));
++imageNumbers_[cameraName];
}
if (!md.HasTag(MM::g_Keyword_Elapsed_Time_ms))
{
// if time tag was not supplied by the camera insert current timestamp
MM::MMTime timestamp = GetMMTimeNow();
md.PutImageTag(MM::g_Keyword_Elapsed_Time_ms, CDeviceUtils::ConvertToString(timestamp.getMsec()));
}
md.PutImageTag("Width",width);
md.PutImageTag("Height",height);
if (byteDepth == 1)
md.PutImageTag("PixelType","GRAY8");
else if (byteDepth == 2)
md.PutImageTag("PixelType","GRAY16");
else if (byteDepth == 4)
md.PutImageTag("PixelType","RGB32");
else if (byteDepth == 8)
md.PutImageTag("PixelType","RGB64");
else
md.PutImageTag("PixelType","Unknown");
pImg->SetMetadata(md);
pImg->SetPixels(pixArray + i*singleChannelSize);
}
{
MMThreadGuard guard(g_bufferLock);
imageCounter_++;
insertIndex_++;
if ((insertIndex_ - (long)frameArray_.size()) > adjustThreshold && (saveIndex_- (long)frameArray_.size()) > adjustThreshold)
{
// adjust buffer indices to avoid overflowing integer size
insertIndex_ -= adjustThreshold;
saveIndex_ -= adjustThreshold;
}
}
previousTicks = GetClockTicksMs();
return true;
}
