91 lines
2.4 KiB
C#
91 lines
2.4 KiB
C#
// Authors
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// Copyright (C) 2014 Stephan Sundermann <stephansundermann@gmail.com>
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using System;
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using Gst;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace GstreamerSharp
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{
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class Playback
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{
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const uint PlayFlagsVis = (1 << 3);
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static Element Pipeline;
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// Return TRUE if this is a Visualization element
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static bool FilterVisFeatures (PluginFeature feature) {
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if (!(feature is ElementFactory))
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return false;
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var factory = (ElementFactory)feature;
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if (!factory.GetMetadata (Gst.Constants.ELEMENT_METADATA_KLASS).Contains ("Visualization"))
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return false;
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return true;
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}
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public static void Main (string[] args)
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{
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ElementFactory selectedFactory = null;
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// Initialize GStreamer
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Application.Init (ref args);
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// Get a list of all visualization plugins
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var list = Registry.Get().FeatureFilter (FilterVisFeatures, false);
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// Print their names
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Console.WriteLine ("Available visualization plugins:");
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foreach (var walk in list) {
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var factory = (ElementFactory)walk;
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var name = factory.Name;
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Console.WriteLine(" {0}", name);
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if (selectedFactory == null && name.StartsWith ("goom")) {
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selectedFactory = factory;
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}
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}
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// Don't use the factory if it's still empty
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// e.g. no visualization plugins found
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if (selectedFactory == null) {
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Console.WriteLine ("No visualization plugins found!");
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return;
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}
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// We have now selected a factory for the visualization element
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Console.WriteLine ("Selected '{0}'", selectedFactory.Name);
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var visPlugin = selectedFactory.Create ();
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if (visPlugin == null)
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return;
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// Build the pipeline
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Pipeline = Parse.Launch ("playbin uri=http://1live.akacast.akamaistream.net/7/706/119434/v1/gnl.akacast.akamaistream.net/1live");
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// Set the visualization flag
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var flags = (uint)Pipeline ["flags"];
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flags |= PlayFlagsVis;
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Pipeline ["flags"] = flags;
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// set vis plugin for playbin
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Pipeline ["vis-plugin"] = visPlugin;
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// Start playing
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var ret = Pipeline.SetState (State.Playing);
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if (ret == StateChangeReturn.Failure) {
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Console.WriteLine ("Unable to set the pipeline to the playing state.");
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return;
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}
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// Wait until error or EOS
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var bus = Pipeline.Bus;
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var msg = bus.TimedPopFiltered (Constants.CLOCK_TIME_NONE, MessageType.Error | MessageType.Eos);
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// Free resources
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Pipeline.SetState (State.Null);
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}
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}
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} |