static void playIt (GtkWidget *widget, GstElement* pipeline)
{
/*
* sidenote: I find it completly stupid that you can detect the end of stream in
* bus_call() with GST_MESSAGE_EOS, but cannot access and reset the state of the pipeline
* throught the GMainLoop *loop. (If there is a way please, tell me about it)
* So in order to detect the end of stream, you've got two options:
* _ create a second bus
* _ pass a struct to bus_call
* _ get the stream length and compare it to the current position....
* I use the third option here, but I'm only skirting the problem to
* keep the code simple and readable.
* known issue: if you set the speeed too high (eg:*64), it won't detect the end of
* the stream correctly, so you'll need to rewind the stream manually by pressing the stop button
*/
// rewind stream if we're at the end of the stream
gint64 streamPosition, streamLength;
GstFormat format = GST_FORMAT_TIME;
gst_element_query_position (pipeline, &format, &streamPosition);
gst_element_query_duration (pipeline, &format, &streamLength);
if (streamPosition==streamLength)
stopIt(widget,pipeline);
// setting the stream to the playing state
g_print("Playing Video\n");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
}
AnalyzerRunControl::AnalyzerRunControl(const AnalyzerStartParameters &sp,
ProjectExplorer::RunConfiguration *runConfiguration)
: RunControl(runConfiguration, sp.runMode)
{
setIcon(QLatin1String(":/images/analyzer_start_small.png"));
m_runConfig = runConfiguration;
m_sp = sp;
connect(this, SIGNAL(finished()), SLOT(runControlFinished()));
connect(AnalyzerManager::stopAction(), SIGNAL(triggered()), SLOT(stopIt()));
}
void VideoProcessor::run(){
cv::Mat frame;
cv::Mat output;
if (!isOpened()) // if no capture device has been set
return;
stop= false;
while (!isStopped()) {
if (!readNextFrame(frame)) // read next frame if any
break;
if (windowNameInput.length()!=0) // display input frame
cv::imshow(windowNameInput,frame);
if (callIt) { // calling the process function or method
if (process){ // process the frame
process(frame, output);
}
else if (frameProcessor){
frameProcessor->process(frame,output);
}
fnumber++; // increment frame number
} else {
output= frame;
}
if (outputFile.length()!=0)
writeNextFrame(output);
if (windowNameOutput.length()!=0) // display output frame
cv::imshow(windowNameOutput,output);
if (delay>=0 && cv::waitKey(delay)>=0) // introduce a delay
stopIt();
if (frameToStop>=0 && getFrameNumber()==frameToStop)// check if we should stop
stopIt();
}
}
static void startRemoteTool(IAnalyzerTool *tool)
{
StartRemoteDialog dlg;
if (dlg.exec() != QDialog::Accepted)
return;
AnalyzerStartParameters sp;
sp.startMode = StartRemote;
sp.connParams = dlg.sshParams();
sp.debuggee = dlg.executable();
sp.debuggeeArgs = dlg.arguments();
sp.displayName = dlg.executable();
sp.workingDirectory = dlg.workingDirectory();
AnalyzerRunControl *rc = tool->createRunControl(sp, 0);
QObject::connect(AnalyzerManager::stopAction(), SIGNAL(triggered()), rc, SLOT(stopIt()));
ProjectExplorerPlugin::instance()->startRunControl(rc, tool->runMode());
}
