sample: Add basic tutorial 7 sample

samples/BasicTutorial7.cs

@@ -0,0 +1,80 @@
+// Authors
+//   Copyright (C) 2014 Stephan Sundermann <stephansundermann@gmail.com>
+
+using System;
+using Gst;
+using System.Runtime.InteropServices;
+
+namespace GstreamerSharp
+{
+	class Playback
+	{
+		public static void Main (string[] args)
+		{
+			// Initialize Gstreamer
+			Gst.Application.Init(ref args);
+
+			// Create the elements
+			var audioSource = ElementFactory.Make ("audiotestsrc", "audio_source");
+			var tee = ElementFactory.Make ("tee", "tee");
+			var audioQueue = ElementFactory.Make ("queue", "audio_queue");
+			var audioConvert = ElementFactory.Make ("audioconvert", "audio_convert");
+			var audioResample = ElementFactory.Make ("audioresample", "audio_resample");
+			var audioSink = ElementFactory.Make ("autoaudiosink", "audio_sink");
+			var videoQueue = ElementFactory.Make ("queue", "video_queue");
+			var visual = ElementFactory.Make ("wavescope", "visual");
+			var videoConvert = ElementFactory.Make ("videoconvert", "csp");
+			var videoSink = ElementFactory.Make ("autovideosink", "video_sink");
+
+			// Create the empty pipeline
+			var pipeline = new Pipeline ("test-pipeline");
+
+			if (audioSource == null || tee == null || audioQueue == null || audioConvert == null || audioResample == null || 
+				audioSink == null || videoQueue == null || visual == null || videoConvert == null || videoSink == null || pipeline == null) {
+				Console.WriteLine ("Not all elements could be created.");
+				return;
+			}
+
+
+			// Link all elements that can be automatically linked because they have "Always" pads
+			pipeline.Add (audioSource, tee, audioQueue, audioConvert, audioResample, audioSink,
+				videoQueue, visual, videoConvert, videoSink);
+			if (!audioSource.Link (tee) ||
+				!Element.Link (audioQueue, audioConvert, audioResample, audioSink) ||
+				!Element.Link (videoQueue, visual, videoConvert, videoSink)) {
+				Console.WriteLine ("Elements could not be linked.");
+				return;
+			}
+
+			// Manually link the Tee, which has "Request" pads
+			var teeSrcPadTemplate = tee.GetPadTemplate ("src_%u");
+			var teeAudioPad = tee.RequestPad (teeSrcPadTemplate, null, null);
+			Console.WriteLine ("Obtained request pad {0} for audio branch.", teeAudioPad.Name);
+			var queueAudioPad = audioQueue.GetStaticPad ("sink");
+			var teeVideoPad = tee.RequestPad (teeSrcPadTemplate, null, null);
+			Console.WriteLine ("Obtained request pad {0} for video branch.", teeVideoPad.Name);
+			var queueVideoPad = videoQueue.GetStaticPad ("sink");
+			if (teeAudioPad.Link (queueAudioPad) != PadLinkReturn.Ok ||
+				teeVideoPad.Link(queueVideoPad) != PadLinkReturn.Ok) {
+				Console.WriteLine ("Tee could not be linked.");
+				return;
+			}
+
+			// Start playing
+			var ret = pipeline.SetState (State.Playing);
+			if (ret == StateChangeReturn.Failure) {
+				Console.WriteLine ("Unable to set the pipeline to the playing state (check the bus for error messages).");
+			}
+
+			// Wait until error or EOS
+			pipeline.Bus.TimedPopFiltered (Constants.CLOCK_TIME_NONE, MessageType.Error | MessageType.Eos);
+
+			// Release the request pads from the Tee, and unref them
+			tee.ReleaseRequestPad (teeAudioPad);
+			tee.ReleaseRequestPad (teeVideoPad);
+
+			// Free resources
+			pipeline.SetState (State.Null);
+		}
+	}
+}

samples/Makefile.am

@@ -1,4 +1,4 @@
-TARGETS = playback.exe video-overlay.exe basic-tutorial-1.exe basic-tutorial-2.exe basic-tutorial-3.exe basic-tutorial-4.exe basic-tutorial-5.exe basic-tutorial-6.exe
+TARGETS = playback.exe video-overlay.exe basic-tutorial-1.exe basic-tutorial-2.exe basic-tutorial-3.exe basic-tutorial-4.exe basic-tutorial-5.exe basic-tutorial-6.exe basic-tutorial-7.exe
 
 DEBUGS = $(addsuffix .mdb, $(TARGETS))
 assemblies = 					\
@@ -33,6 +33,9 @@ basic-tutorial-5.exe: $(srcdir)/BasicTutorial5.cs $(assemblies)
 basic-tutorial-6.exe: $(srcdir)/BasicTutorial6.cs $(assemblies)
 	$(CSC) $(CSFLAGS) -out:basic-tutorial-6.exe $(references) $(GLIB_SHARP_LIBS) $(srcdir)/BasicTutorial6.cs
 
+basic-tutorial-7.exe: $(srcdir)/BasicTutorial7.cs $(assemblies)
+	$(CSC) $(CSFLAGS) -out:basic-tutorial-7.exe $(references) $(GLIB_SHARP_LIBS) $(srcdir)/BasicTutorial7.cs
+
 EXTRA_DIST = 				\
 	Playback.cs \
     VideoOverlay.cs \
@@ -41,4 +44,5 @@ EXTRA_DIST = 				\
     BasicTutorial3.cs \
     BasicTutorial4.cs \
     BasicTutorial5.cs \
-    BasicTutorial6.cs
+    BasicTutorial6.cs \
+    BasicTutorial7.cs