/// <summary>
/// Helper function to really attach a bin to the audio player tee
/// </summary>
/// <param name="pad">
/// A <see cref="IntPtr"/> referencing the pad that may need to be unblocked
/// </param>
/// <param name="blocked">
/// A <see cref="System.Boolean"/> indicating if the pad is blocked
/// </param>
/// <param name="user_data">
/// A <see cref="IntPtr"/> containing references to the bin and the audio tee
/// </param>
private void ReallyAddBin (IntPtr pad, bool blocked, IntPtr user_data)
{
GCHandle gch = GCHandle.FromIntPtr (user_data);
Bin[] user_bins = (Gst.Bin[])gch.Target;
Bin fixture = user_bins[0];
Bin element = user_bins[1];
Element queue;
Element audioconvert;
Bin bin;
Bin parent_bin;
Pad sink_pad;
Pad ghost_pad;
GstObject element_parent;
element_parent = element.GetParent ();
if (element_parent != null && !element_parent.IsNull ()) {
Hyena.Log.Debug ("[Streamrecorder.PlayerAudioTee]<ReallyAddBin>element already linked, exiting. assume double function call");
element_parent.UnRef ();
return;
}
/* set up containing bin */
bin = new Bin ();
queue = ElementFactory.Make ("queue");
audioconvert = ElementFactory.Make ("audioconvert");
bin.SetBooleanProperty ("async-handling", true);
queue.SetIntegerProperty ("max-size-buffers", 10);
bin.AddMany (new Element[3] { queue, audioconvert, element });
queue.LinkMany (new Element[2] { audioconvert, element });
sink_pad = queue.GetStaticPad ("sink");
ghost_pad = new GhostPad ("sink", sink_pad);
bin.AddPad (ghost_pad);
parent_bin = new Bin (fixture.GetParent ().ToIntPtr ());
parent_bin.Add (bin);
fixture.Link (bin);
attached = true;
if (blocked) {
Hyena.Log.Debug ("[Streamrecorder.PlayerAudioTee]<ReallyAddBin> unblocking pad after adding tee");
parent_bin.SetState (State.Playing);
ghost_pad.Ref ();
parent_bin.UnRef ();
new Pad (pad).SetBlockedAsync (false, AddRemoveBinDone, ghost_pad.ToIntPtr ());
} else {
parent_bin.SetState (State.Paused);
ghost_pad.Ref ();
parent_bin.UnRef ();
AddRemoveBinDone (IntPtr.Zero, false, ghost_pad.ToIntPtr ());
}
}