public static void Main(string[] args)
{
// Initialize GStreamer
Application.Init (ref args);
// Build the pipeline
var pipeline = Parse.Launch ("playbin uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm");
// Create the elements inside the sink bin
var equalizer = ElementFactory.Make ("equalizer-3bands", "equalizer");
var convert = ElementFactory.Make ("audioconvert", "convert");
var sink = ElementFactory.Make ("autoaudiosink", "audio_sink");
if (equalizer == null || convert == null || sink == null) {
Console.WriteLine ("Not all elements could be created.");
return;
}
// Create the sink bin, add the elements and link them
var bin = new Bin ("audio_sink_bin");
bin.Add (equalizer, convert, sink);
Element.Link (equalizer, convert, sink);
var pad = equalizer.GetStaticPad ("sink");
var ghostPad = new GhostPad ("sink", pad);
ghostPad.SetActive (true);
bin.AddPad (ghostPad);
// Start playing
var ret = pipeline.SetState (State.Playing);
if (ret == StateChangeReturn.Failure) {
Console.WriteLine ("Unable to set the pipeline to the playing state.");
return;
}
// Configure the equalizer
equalizer ["band1"] = (double)-24.0;
equalizer ["band2"] = (double)-24.0;
// Set playbin2's audio sink to be our sink bin
pipeline ["audio-sink"] = bin;
// Wait until error or EOS
var bus = pipeline.Bus;
var msg = bus.TimedPopFiltered (Constants.CLOCK_TIME_NONE, MessageType.Error | MessageType.Eos);
// Free resources
pipeline.SetState (State.Null);
}
public AudioSinkBin (string elementName) : base(elementName)
{
hw_audio_sink = SelectAudioSink ();
Add (hw_audio_sink);
first = hw_audio_sink;
// Our audio sink is a tee, so plugins can attach their own pipelines
audiotee = ElementFactory.Make ("tee", "audiotee") as Tee;
if (audiotee == null) {
Log.Error ("Can not create audio tee!");
} else {
Add (audiotee);
}
volume = FindVolumeProvider (hw_audio_sink);
if (volume != null) {
// If the sink provides its own volume property we assume that it will
// also save that value across program runs. Pulsesink has this behaviour.
VolumeNeedsSaving = false;
} else {
volume = ElementFactory.Make ("volume", "volume");
VolumeNeedsSaving = true;
Add (volume);
volume.Link (hw_audio_sink);
first = volume;
}
equalizer = ElementFactory.Make ("equalizer-10bands", "equalizer-10bands");
if (equalizer != null) {
Element eq_audioconvert = ElementFactory.Make ("audioconvert", "audioconvert");
Element eq_audioconvert2 = ElementFactory.Make ("audioconvert", "audioconvert2");
preamp = ElementFactory.Make ("volume", "preamp");
Add (eq_audioconvert, preamp, equalizer, eq_audioconvert2);
Element.Link (eq_audioconvert, preamp, equalizer, eq_audioconvert2, first);
first = eq_audioconvert;
Log.Debug ("Built and linked Equalizer");
}
// Link the first tee pad to the primary audio sink queue
Pad sinkpad = first.GetStaticPad ("sink");
Pad pad = audiotee.GetRequestPad ("src%d");
audiotee.AllocPad = pad;
pad.Link (sinkpad);
first = audiotee;
visible_sink = new GhostPad ("sink", first.GetStaticPad ("sink"));
AddPad (visible_sink);
}
public MyBin () : base () {
Element filesrc = ElementFactory.Make ("filesrc");
Add (filesrc);
CollectionAssert.IsEmpty (Pads);
GhostPad pad1 = new GhostPad ("ghost-sink", PadDirection.Sink);
GhostPad pad2 = new GhostPad ("ghost-src", new PadTemplate ("src-template", PadDirection.Src, PadPresence.Request, Caps.NewAny()));
Assert.IsFalse (pad1.SetTarget (filesrc.GetStaticPad ("src")));
Assert.IsTrue (pad2.SetTarget (filesrc.GetStaticPad ("src")));
AddPad (pad1);
AddPad (pad2);
CollectionAssert.Contains (Pads, pad1);
CollectionAssert.Contains (Pads, pad2);
CollectionAssert.Contains (SinkPads, pad1);
CollectionAssert.Contains (SrcPads, pad2);
}