gstreamer/sample/QueueExample.cs

//
// Authors:
//   Khaled Mohammed (khaled.mohammed@gmail.com)
//
//

using Gst;
using System;

public class QueueExample {
	public static void Main(string [] args) 
	{
		Application.Init();
		
		if(args.Length != 1) {
			Console.Error.WriteLine("usage: mono queueexample.exe <filename>\n");
			return;
		}

		Element pipeline = new Pipeline("pipeline");
		
		Element filesrc = ElementFactory.Make("filesrc", "disk_source");
		filesrc.SetProperty("location", args[0]);
		Element decode = ElementFactory.Make("mad", "decode");
		Element queue = ElementFactory.Make("queue", "queue");

		Element audiosink = ElementFactory.Make("alsasink", "play_audio");

		Bin bin = (Bin) pipeline;
		bin.AddMany(filesrc, decode, queue, audiosink);

		Element.LinkMany(filesrc, decode, queue, audiosink);

		pipeline.SetState(State.Playing);

		EventLoop(pipeline);

		pipeline.SetState(State.Null);
	}

	static void EventLoop(Element pipe)
	{
		Bus bus = pipe.Bus;

		while(true) {
			Message message = bus.Poll(MessageType.Any, -1);
		
			switch(message.Type) {
				case MessageType.Eos: {
					message.Dispose();
					return;
				}
				case MessageType.Error: {
					return;
				}
			}
		}
	}
}