wha.py

   1 #!/usr/bin/python
   2 import pygst
   3 pygst.require("0.10")
   4 import gst
   5 import pygtk
   6 pygtk.require('2.0')
   7 import gtk
   8
   9 WIDTH = 320
  10 HEIGHT = 240
  11
  12 def videotestsrc():
  13     """Make an interesting video test src"""
  14     videosrc = gst.element_factory_make("videotestsrc", "video")
  15     sp = videosrc.set_property
  16     sp("pattern", "zone-plate")
  17     sp("kt2", 0)
  18     sp("kx2", 2)
  19     sp("ky2", 3)
  20     sp("kxy", 2)
  21     sp("kt2", 0)
  22     return videosrc
  23
  24
  25 class Screen:
  26     def __init__(self, pipeline, videosrc=None):
  27         #video screen
  28         self.screen = gtk.DrawingArea()
  29         self.screen.set_size_request(WIDTH, HEIGHT)
  30
  31         #pack window
  32         self.window = gtk.Window()
  33         self.vbox = gtk.VBox()   # vertical box
  34         self.vbox.pack_start(self.screen)
  35         self.vbox.pack_start(self.buttons)
  36         self.window.add(self.vbox)
  37
  38         # Create GStreamer bits and bobs
  39         self.videosrc = videosrc
  40         self.pipeline = pipeline
  41         self.pipeline.add(self.videosrc)
  42         self.sink = gst.element_factory_make("ximagesink", "sink")
  43         self.pipeline.add(self.sink)
  44         self.videosrc.link(self.sink)
  45
  46         self.window.show_all()
  47         self.realise()
  48         self.sink.set_xwindow_id(self.screen.window.xid)
  49         self.pipeline.set_state(gst.STATE_PLAYING)
  50
  51
  52 class Main:
  53     def __init__(self):
  54         #video screen
  55         self.screen = gtk.DrawingArea()
  56         self.screen.set_size_request(WIDTH, HEIGHT)
  57
  58         #buttons
  59         self.play_button = gtk.Button(stock=gtk.STOCK_MEDIA_PLAY)
  60         self.play_button.connect("clicked", self.play_onclick)
  61         self.stop_button = gtk.Button(stock=gtk.STOCK_MEDIA_STOP)
  62         self.stop_button.connect("clicked", self.stop_onclick)
  63         self.quit_button = gtk.Button(stock=gtk.STOCK_QUIT)
  64         self.quit_button.connect("clicked", self.quit_onclick)
  65
  66         self.buttons = gtk.HButtonBox()
  67         self.buttons.add(self.play_button)
  68         self.buttons.add(self.stop_button)
  69         self.buttons.add(self.quit_button)
  70
  71         #pack window
  72         self.window = gtk.Window()
  73         self.vbox = gtk.VBox()   # vertical box
  74         self.vbox.pack_start(self.screen)
  75         self.vbox.pack_start(self.buttons)
  76         self.window.add(self.vbox)
  77
  78         # Create GStreamer pipeline
  79         self.pipeline = gst.Pipeline()
  80         self.videosrc = videotestsrc()
  81         self.pipeline.add(self.videosrc)
  82         self.sink = gst.element_factory_make("ximagesink", "sink")
  83         self.pipeline.add(self.sink)
  84         self.videosrc.link(self.sink)
  85
  86         #self.window.connect("delete_event", self.delete_event)
  87         self.window.connect("destroy", self.destroy)
  88
  89         self.window.show_all()
  90
  91     def play_onclick(self, widget):
  92         print "play"
  93         self.sink.set_xwindow_id(self.screen.window.xid)
  94         self.pipeline.set_state(gst.STATE_PLAYING)
  95
  96     def stop_onclick(self, widget):
  97         print "stop"
  98         self.pipeline.set_state(gst.STATE_READY)
  99
 100     def destroy(self, widget, data=None):
 101         print "bye"
 102         gtk.main_quit()
 103
 104     quit_onclick = destroy
 105
 106 start = Main()
 107 gtk.main()