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sample: Add basic tutorial 9 sample
This commit is contained in:
Stephan Sundermann
parent
8e8f890424
commit
f58721c84a
2 changed files with 186 additions and 2 deletions
180
samples/BasicTutorial9.cs
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180
samples/BasicTutorial9.cs
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// 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 Gst.PbUtils;
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using System.Runtime.InteropServices;
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namespace GstreamerSharp
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{
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class Playback
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{
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static Discoverer Discoverer;
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static GLib.MainLoop MainLoop;
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// Print a tag in a human-readable format (name: value)
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static void PrintTagForeach (TagList tags, string tag, int depth) {
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var val = GLib.Value.Empty;
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TagList.CopyValue (ref val, tags, tag);
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string str;
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if (val.Val is string)
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str = (string)val.Val;
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else
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str = Value.Serialize (val);
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Console.WriteLine ("{0}{1}: {2}", new string(' ', 2 * depth), Tag.GetNick (tag), str);
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}
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// Print information regarding a stream
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static void PrintStreamInfo (DiscovererStreamInfo info, int depth) {
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var caps = info.Caps;
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string desc = null;
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if (caps != null) {
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if (caps.IsFixed)
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desc = Gst.PbUtils.Global.PbUtilsGetCodecDescription (caps);
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else
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desc = caps.ToString ();
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}
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Console.WriteLine ("{0}{1}: {2}", new string (' ', 2 * depth), info.StreamTypeNick, (desc != null ? desc : ""));
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var tags = info.Tags;
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if (tags != null) {
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Console.WriteLine ("{0}Tags:", new string (' ', 2 * (depth + 1)));
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tags.Foreach ((TagForeachFunc)delegate (TagList list, string tag) {
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PrintTagForeach (list, tag, depth + 2);
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});
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}
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}
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// Print information regarding a stream and its substreams, if any
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static void PrintTopology (DiscovererStreamInfo info, int depth) {
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if (info == null)
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return;
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PrintStreamInfo (info, depth);
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var next = info.Next;
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if (next != null) {
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PrintTopology (next, depth + 1);
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} else if (info is DiscovererContainerInfo) {
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var streams = ((DiscovererContainerInfo)info).Streams;
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foreach (var stream in streams) {
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PrintTopology (stream, depth + 1);
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}
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}
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}
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//This function is called every time the discoverer has information regarding one of the URIs we provided.
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static void HandleDiscovered (object disc, DiscoveredArgs args) {
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var info = args.Info;
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var uri = info.Uri;
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var result = info.Result;
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var discoverer = (Discoverer)disc;
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switch (result) {
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case DiscovererResult.UriInvalid:
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Console.WriteLine ("Invalid URI '{0}'", uri);
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break;
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case DiscovererResult.Error:
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var err = new GLib.GException (args.Error);
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Console.WriteLine ("Discoverer error: {0}", err.Message);
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break;
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case DiscovererResult.Timeout:
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Console.WriteLine ("Timeout");
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break;
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case DiscovererResult.Busy:
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Console.WriteLine ("Busy");
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break;
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case DiscovererResult.MissingPlugins:{
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var s = info.Misc;
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if (s != null) {
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Console.WriteLine ("Missing plugins: {0}", s);
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}
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break;
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}
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case DiscovererResult.Ok:
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Console.WriteLine ("Discovered '{0}'", uri);
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break;
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}
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if (result != DiscovererResult.Ok) {
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Console.WriteLine ("This URI cannot be played");
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return;
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}
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// If we got no error, show the retrieved information
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Console.WriteLine ("\nDuration: {0}", new TimeSpan((long)info.Duration));
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var tags = info.Tags;
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if (tags != null) {
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Console.WriteLine ("Tags:");
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tags.Foreach ((TagForeachFunc)delegate (TagList list, string tag) {
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PrintTagForeach (list, tag, 1);
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});
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}
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Console.WriteLine ("Seekable: {0}", (info.Seekable ? "yes" : "no"));
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Console.WriteLine ();
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var sinfo = info.StreamInfo;
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if (sinfo == null)
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return;
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Console.WriteLine ("Stream information:");
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PrintTopology (sinfo, 1);
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Console.WriteLine ();
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}
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public static void Main (string[] args)
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{
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var uri = "http://download.blender.org/durian/trailer/sintel_trailer-1080p.mp4";
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// if a URI was provided, use it instead of the default one
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if (args.Length > 1) {
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uri = args[0];
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}
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// Initialize GStreamer
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Gst.Application.Init (ref args);
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Console.WriteLine ("Discovering '{0}'", uri);
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// Instantiate the Discoverer
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Discoverer = new Discoverer (5L * Gst.Constants.SECOND);
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// Connect to the interesting signals
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Discoverer.Discovered += HandleDiscovered;
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Discoverer.Finished += (sender, e) => {
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Console.WriteLine ("Finished discovering");
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MainLoop.Quit ();
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};
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// Start the discoverer process (nothing to do yet)
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Discoverer.Start ();
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// Add a request to process asynchronously the URI passed through the command line
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if (!Discoverer.DiscoverUriAsync (uri)) {
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Console.WriteLine ("Failed to start discovering URI '{0}'", uri);
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return;
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}
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// Create a GLib Main Loop and set it to run, so we can wait for the signals
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MainLoop = new GLib.MainLoop ();
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MainLoop.Run ();
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// Stop the discoverer process
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Discoverer.Stop ();
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}
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}
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}
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@ -1,4 +1,4 @@
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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
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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
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DEBUGS = $(addsuffix .mdb, $(TARGETS))
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assemblies = \
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@ -39,6 +39,9 @@ basic-tutorial-7.exe: $(srcdir)/BasicTutorial7.cs $(assemblies)
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basic-tutorial-8.exe: $(srcdir)/BasicTutorial8.cs $(assemblies)
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$(CSC) $(CSFLAGS) -out:basic-tutorial-8.exe $(references) $(GLIB_SHARP_LIBS) $(srcdir)/BasicTutorial8.cs
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basic-tutorial-9.exe: $(srcdir)/BasicTutorial9.cs $(assemblies)
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$(CSC) $(CSFLAGS) -out:basic-tutorial-9.exe $(references) $(GLIB_SHARP_LIBS) $(srcdir)/BasicTutorial9.cs
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EXTRA_DIST = \
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Playback.cs \
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VideoOverlay.cs \
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@ -49,4 +52,5 @@ EXTRA_DIST = \
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BasicTutorial5.cs \
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BasicTutorial6.cs \
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BasicTutorial7.cs \
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BasicTutorial8.cs
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BasicTutorial8.cs \
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BasicTutorial9.cs
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