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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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188 lines
5.1 KiB
C#
188 lines
5.1 KiB
C#
// Authors
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// Copyright (C) 2008 Paul Burton <paulburton89@gmail.com>
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using System;
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using System.Runtime.InteropServices;
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using Gtk;
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using Gst;
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using Gst.Interfaces;
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using Gst.BasePlugins;
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public class MainWindow : Gtk.Window {
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DrawingArea _da;
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Pipeline _pipeline;
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HScale _scale;
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Label _lbl;
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bool _updatingScale;
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bool _pipelineOK;
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public static void Main (string[] args) {
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Gtk.Application.Init ();
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Gst.Application.Init ();
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MainWindow window = new MainWindow ();
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window.ShowAll ();
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Gtk.Application.Run ();
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}
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public MainWindow ()
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: base (WindowType.Toplevel) {
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VBox vBox = new VBox ();
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_da = new DrawingArea ();
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_da.ModifyBg (Gtk.StateType.Normal, new Gdk.Color (0, 0, 0));
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_da.SetSizeRequest (400, 300);
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vBox.PackStart (_da);
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_scale = new HScale (0, 1, 0.01);
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_scale.DrawValue = false;
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_scale.ValueChanged += ScaleValueChanged;
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vBox.PackStart (_scale, false, false, 0);
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HBox hBox = new HBox ();
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Button btnOpen = new Button ();
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btnOpen.Label = "Open";
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btnOpen.Clicked += ButtonOpenClicked;
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hBox.PackStart (btnOpen, false, false, 0);
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Button btnPlay = new Button ();
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btnPlay.Label = "Play";
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btnPlay.Clicked += ButtonPlayClicked;
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hBox.PackStart (btnPlay, false, false, 0);
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Button btnPause = new Button ();
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btnPause.Label = "Pause";
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btnPause.Clicked += ButtonPauseClicked;
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hBox.PackStart (btnPause, false, false, 0);
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_lbl = new Label ();
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_lbl.Text = "00:00 / 00:00";
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hBox.PackEnd (_lbl, false, false, 0);
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vBox.PackStart (hBox, false, false, 3);
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Add (vBox);
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WindowPosition = Gtk.WindowPosition.Center;
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DeleteEvent += OnDeleteEvent;
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GLib.Timeout.Add (1000, new GLib.TimeoutHandler (UpdatePos));
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}
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void OnDeleteEvent (object sender, DeleteEventArgs args) {
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Gtk.Application.Quit ();
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args.RetVal = true;
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}
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void ButtonOpenClicked (object sender, EventArgs args) {
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FileChooserDialog dialog = new FileChooserDialog ("Open", this, FileChooserAction.Open, new object[] { "Cancel", ResponseType.Cancel, "Open", ResponseType.Accept });
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dialog.SetCurrentFolder (Environment.GetFolderPath (Environment.SpecialFolder.Personal));
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if (dialog.Run () == (int) ResponseType.Accept) {
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_pipelineOK = false;
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if (_pipeline != null) {
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_pipeline.SetState (Gst.State.Null);
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_pipeline.Dispose ();
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}
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_scale.Value = 0;
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_pipeline = new Pipeline (string.Empty);
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Element playbin = ElementFactory.Make ("playbin", "playbin");
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XvImageSink sink = XvImageSink.Make ("sink");
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if (_pipeline == null)
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Console.WriteLine ("Unable to create pipeline");
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if (playbin == null)
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Console.WriteLine ("Unable to create element 'playbin'");
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if (sink == null)
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Console.WriteLine ("Unable to create element 'sink'");
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_pipeline.Add (playbin);
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(sink as XOverlay).XwindowId = gdk_x11_drawable_get_xid (_da.GdkWindow.Handle);
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playbin["video-sink"] = sink;
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playbin["uri"] = "file://" + dialog.Filename;
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StateChangeReturn sret = _pipeline.SetState (Gst.State.Playing);
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if (sret == StateChangeReturn.Async) {
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State state, pending;
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sret = _pipeline.GetState (out state, out pending, Clock.Second * 5);
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}
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if (sret == StateChangeReturn.Success)
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_pipelineOK = true;
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else
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Console.WriteLine ("State change failed for {0} ({1})\n", dialog.Filename, sret);
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}
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dialog.Destroy ();
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}
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void ButtonPlayClicked (object sender, EventArgs args) {
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if ( (_pipeline != null) && _pipelineOK)
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_pipeline.SetState (Gst.State.Playing);
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}
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void ButtonPauseClicked (object sender, EventArgs args) {
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if ( (_pipeline != null) && _pipelineOK)
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_pipeline.SetState (Gst.State.Paused);
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}
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void ScaleValueChanged (object sender, EventArgs args) {
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if (_updatingScale)
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return;
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long duration;
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Gst.Format fmt = Gst.Format.Time;
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if ( (_pipeline != null) && _pipelineOK && _pipeline.QueryDuration (ref fmt, out duration)) {
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long pos = (long) (duration * _scale.Value);
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//Console.WriteLine ("Seek to {0}/{1} ({2}%)", pos, duration, _scale.Value);
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_pipeline.Seek (Format.Time, SeekFlags.Flush, pos);
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}
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}
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bool UpdatePos () {
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Gst.Format fmt = Gst.Format.Time;
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long duration, pos;
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if ( (_pipeline != null) && _pipelineOK &&
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_pipeline.QueryDuration (ref fmt, out duration) &&
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_pipeline.QueryPosition (ref fmt, out pos)) {
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_lbl.Text = string.Format ("{0} / {1}", TimeString (pos), TimeString (duration));
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_updatingScale = true;
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_scale.Value = (double) pos / duration;
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_updatingScale = false;
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}
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return true;
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}
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string TimeString (long t) {
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long secs = t / 1000000000;
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int mins = (int) (secs / 60);
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secs = secs - (mins * 60);
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if (mins >= 60) {
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int hours = (int) (mins / 60);
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mins = mins - (hours * 60);
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return string.Format ("{0}:{1:d2}:{2:d2}", hours, mins, secs);
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}
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return string.Format ("{0}:{1:d2}", mins, secs);
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}
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[DllImport ("libgdk-x11-2.0") ]
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static extern uint gdk_x11_drawable_get_xid (IntPtr handle);
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}
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