gstreamer/samples/GtkVideoPlayer.cs

188 lines
5.1 KiB
C#

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