bool ConstructPipeline ()
{
Element queue;
pipeline = new Gst.Pipeline ("pipeline");
if (pipeline == null) {
RaiseError (current_track, Catalog.GetString ("Could not create pipeline"));
return false;
}
cddasrc = ElementFactory.MakeFromUri (URIType.Src, "cdda://1", "cddasrc");
if (cddasrc == null) {
RaiseError (current_track, Catalog.GetString ("Could not initialize element from cdda URI"));
return false;
}
cddasrc ["device"] = device;
if (cddasrc.HasProperty ("paranoia-mode")) {
cddasrc ["paranoia-mode"] = paranoia_mode;
}
try {
encoder = (Bin)Parse.BinFromDescription (encoder_pipeline, true);
} catch (Exception e) {
string err = Catalog.GetString ("Could not create encoder pipeline : {0}");
RaiseError (current_track, String.Format (err, e.Message));
return false;
}
queue = ElementFactory.Make ("queue", "queue");
if (queue == null) {
RaiseError (current_track, Catalog.GetString ("Could not create queue plugin"));
return false;
}
queue ["max-size-time"] = 120 * Gst.Clock.Second;
filesink = ElementFactory.Make ("filesink", "filesink");
if (filesink == null) {
RaiseError (current_track, Catalog.GetString ("Could not create filesink plugin"));
return false;
}
pipeline.Add (cddasrc, queue, encoder, filesink);
if (!Element.Link (cddasrc, queue, encoder, filesink)) {
RaiseError (current_track, Catalog.GetString ("Could not link pipeline elements"));
}
pipeline.Bus.AddWatch (OnBusMessage);
return true;
}
static Element FindVolumeProvider (Element sink)
{
Element volumeProvider = null;
// Sinks which automatically select between a number of possibilities
// (such as autoaudiosink and gconfaudiosink) need to be at least in
// the Ready state before they'll contain an actual sink.
sink.SetState (State.Ready);
if (sink.HasProperty ("volume")) {
volumeProvider = sink;
Log.DebugFormat ("Sink {0} has native volume.", volumeProvider.Name);
} else {
var sinkBin = sink as Bin;
if (sinkBin != null) {
foreach (Element e in sinkBin.ElementsRecurse) {
if (e.HasProperty ("volume")) {
volumeProvider = e;
Log.DebugFormat ("Found volume provider {0} in {1}.",
volumeProvider.Name, sink.Name);
}
}
}
}
return volumeProvider;
}
private void ReInitPipeline()
{
if (pipeline != null) {
pipeline.SetState (Gst.State.Null);
pipeline = null;
}
pipeline = new Gst.Pipeline ();
drawSink = Gst.ElementFactory.Make ("xvimagesink");
camerabin = Gst.ElementFactory.Make ("camerabin");
camerabin.Connect ("image-done", new Gst.SignalHandler (OnImageDone));
pipeline.SetState (Gst.State.Null);
overlayAdapter = new Gst.Interfaces.XOverlayAdapter (drawSink.Handle);
overlayAdapter.XwindowId = gdk_x11_drawable_get_xid (drawingArea.GdkWindow.Handle);
pipeline.Add (camerabin);
if (camerabin.HasProperty ("viewfinder-sink")) {
camerabin ["viewfinder-sink"] = drawSink;
}
if (camerabin.HasProperty ("filename")) {
camerabin ["filename"] = "snapshot.png";
}
pipeline.SetState (Gst.State.Playing);
needReInit = false;
}
