diff --git a/samples/BasicTutorial13.cs b/samples/BasicTutorial13.cs new file mode 100644 index 0000000000..485f666a91 --- /dev/null +++ b/samples/BasicTutorial13.cs @@ -0,0 +1,121 @@ +// Authors +// Copyright (C) 2014 Stephan Sundermann + +using System; +using Gst; +using System.Runtime.InteropServices; + +namespace GstreamerSharp +{ + class Playback + { + static bool Playing; // Playing or Paused + static double Rate; //Current playback rate (can be negative) + static Element Pipeline, VideoSink; + + // Send seek event to change rate + static void SendSeekEvent () { + var format = Format.Time; + long position; + + // Obtain the current position, needed for the seek event + if (!Pipeline.QueryPosition (format, out position)) { + Console.WriteLine ("Unable to retrieve current position."); + return; + } + + Event seekEvent; + // Create the seek event + if (Rate > 0) { + seekEvent = new Event (Rate, Format.Time, SeekFlags.Flush | SeekFlags.Accurate, SeekType.Set, position, SeekType.None, 0); + } else { + seekEvent = new Event (Rate, Format.Time, SeekFlags.Flush | SeekFlags.Accurate, SeekType.Set, 0, SeekType.Set, position); + } + + if (VideoSink == null) { + // If we have not done so, obtain the sink through which we will send the seek events + VideoSink = (Element)Pipeline ["video-sink"]; + } + + // Send the event + VideoSink.SendEvent (seekEvent); + + Console.WriteLine ("Current rate: {0}", Rate); + } + + // Process keyboard input + static void HandleKeyboard () { + ConsoleKeyInfo x; + bool terminate = false; + while (!terminate) { + x = Console.ReadKey (); + switch (x.Key) { + case ConsoleKey.P : + Playing = !Playing; + Pipeline.SetState (Playing ? State.Playing : State.Paused); + Console.WriteLine ("Setting state to {0}", Playing ? "PLAYING" : "PAUSE"); + break; + case ConsoleKey.S: + if (x.Modifiers == ConsoleModifiers.Shift) + Rate *= 2.0; + else + Rate /= 2.0; + SendSeekEvent (); + break; + case ConsoleKey.D: + Rate *= -1.0; + SendSeekEvent (); + break; + case ConsoleKey.N: + if (VideoSink == null) { + // If we have not done so, obtain the sink through which we will send the step events + VideoSink = (Element)Pipeline ["video-sink"]; + } + var evnt = new Event (Format.Buffers, 1, Rate, true, false); + VideoSink.SendEvent (evnt); + + Console.WriteLine ("Stepping one frame"); + break; + case ConsoleKey.Q: + terminate = true; + break; + default: + break; + } + } + } + + public static void Main (string[] args) + { + // Initialize GStreamer + Application.Init (ref args); + + // Print usage map + Console.WriteLine ("USAGE: Choose one of the following options, then press enter:"); + Console.WriteLine (" 'P' to toggle between PAUSE and PLAY"); + Console.WriteLine (" 'S' to increase playback speed, 's' to decrease playback speed"); + Console.WriteLine (" 'D' to toggle playback direction"); + Console.WriteLine (" 'N' to move to next frame (in the current direction, better in PAUSE)"); + Console.WriteLine (" 'Q' to quit"); + + // Build the pipeline + //Pipeline = Parse.Launch ("playbin uri=http://download.blender.org/durian/trailer/sintel_trailer-1080p.mp4"); + Pipeline = Parse.Launch ("playbin uri=file:///home/stephan/Downloads/sintel_trailer-1080p.mp4"); + + // Start playing + var ret = Pipeline.SetState (State.Playing); + if (ret == StateChangeReturn.Failure) { + Console.WriteLine ("Unable to set the pipeline to the playing state."); + return; + } + Playing = true; + Rate = 1.0; + + // Process input + HandleKeyboard (); + + // Free resources + Pipeline.SetState (State.Null); + } + } +} \ No newline at end of file diff --git a/samples/Makefile.am b/samples/Makefile.am index 0dc6c379da..d88f77e39d 100644 --- a/samples/Makefile.am +++ b/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 basic-tutorial-7.exe basic-tutorial-8.exe basic-tutorial-9.exe basic-tutorial-12.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 basic-tutorial-8.exe basic-tutorial-9.exe basic-tutorial-12.exe basic-tutorial-13.exe DEBUGS = $(addsuffix .mdb, $(TARGETS)) assemblies = \ @@ -45,6 +45,9 @@ basic-tutorial-9.exe: $(srcdir)/BasicTutorial9.cs $(assemblies) basic-tutorial-12.exe: $(srcdir)/BasicTutorial12.cs $(assemblies) $(CSC) $(CSFLAGS) -out:basic-tutorial-12.exe $(references) $(GLIB_SHARP_LIBS) $(srcdir)/BasicTutorial12.cs +basic-tutorial-13.exe: $(srcdir)/BasicTutorial13.cs $(assemblies) + $(CSC) $(CSFLAGS) -out:basic-tutorial-13.exe $(references) $(GLIB_SHARP_LIBS) $(srcdir)/BasicTutorial13.cs + EXTRA_DIST = \ Playback.cs \ VideoOverlay.cs \ @@ -57,4 +60,5 @@ EXTRA_DIST = \ BasicTutorial7.cs \ BasicTutorial8.cs \ BasicTutorial9.cs \ - BasicTutorial12.cs + BasicTutorial12.cs \ + BasicTutorial13.cs