/**
* Creates the gStreamer pipeline and blocks until it starts successfully
*
* @param newRec The RecordingImpl of the capture we wish to perform.
* @return The recording ID (equal to newRec.getID()) or null in the case of an error
*/
public void start(RecordingImpl newRec) {
// Create the pipeline
try {
pipeline = create(newRec.getProperties(), false);
} catch (UnsatisfiedLinkError e) {
throw new UnableToStartCaptureException(
e.getMessage() + " : please add libjv4linfo.so to /usr/lib to correct this issue.");
}
// Check if the pipeline came up ok
if (pipeline == null) {
// logger.error("Capture {} could not start, pipeline was null!", newRec.getID());
captureFailureHandler.resetOnFailure(newRec.getID());
throw new UnableToStartCaptureException(
"Capture " + newRec.getID() + " could not start, pipeline was null!");
}
logger.info("Initializing devices for capture.");
hookUpBus();
// Grab time to wait for pipeline to start
int wait;
String waitProp = newRec.getProperty(CaptureParameters.CAPTURE_START_WAIT);
if (waitProp != null) {
wait = Integer.parseInt(waitProp);
} else {
wait = 5; // Default taken from gstreamer docs
}
pipeline.debugToDotFile(Pipeline.DEBUG_GRAPH_SHOW_ALL, pipeline.getName());
// Try and start the pipeline
pipeline.play();
if (pipeline.getState(wait * GStreamerPipeline.GST_SECOND) != State.PLAYING) {
// In case of an error call stop to clean up the pipeline.
logger.debug("Pipeline was unable to start after " + wait + " seconds.");
stop(GStreamerPipeline.DEFAULT_PIPELINE_SHUTDOWN_TIMEOUT);
throw new UnableToStartCaptureException(
"Unable to start pipeline after " + wait + " seconds. Aborting!");
}
logger.info("{} started.", pipeline.getName());
}
