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Enhancement to video stream input thread

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This commit is contained in:
Kees-V
2014-10-26 10:56:09 +01:00
parent 686743484c
commit 528b548b11
1 changed files with 15 additions and 9 deletions
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18
src/video/videobuffer.cpp
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@@ -149,29 +149,35 @@ void imageCollectionThread(void* arg)
// it returns so that the video capture can be recreated.
void getALPRImages(cv::VideoCapture cap, VideoDispatcher* dispatcher)
{
cv::Mat frame;
cv::Mat frame1;
cv::Mat frame2;
cv::Mat* receiveframe;
BOOLEAN receiveframeisframe1 = TRUE;
while (dispatcher->active)
{
while (dispatcher->active)
{
dispatcher->mMutex.lock();
bool hasImage = false;
try
{
hasImage = cap.read(frame);
if (receiveframeisframe1) receiveframe = &frame1;
else receiveframe = &frame2;
hasImage = cap.read(*receiveframe);
// Double check the image to make sure it's valid.
if (!frame.data || frame.empty())
if (!(*receiveframe).data || (*receiveframe).empty())
{
dispatcher->mMutex.unlock();
std::stringstream ss;
ss << "Stream " << dispatcher->mjpeg_url << " received invalid frame";
dispatcher->log_error(ss.str());
return;
}
dispatcher->setLatestFrame(&frame);
dispatcher->mMutex.lock();
dispatcher->setLatestFrame(receiveframe);
dispatcher->mMutex.unlock();
receiveframeisframe1 = !receiveframeisframe1;
}
catch (const std::runtime_error& error)
{