gallery-front-end.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, index, n):
  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.window.add(self.vbox)
  36
  37         # Create GStreamer bits and bobs
  38         self.videosrc = videosrc
  39         self.pipeline = pipeline
  40         self.pipeline.add(self.videosrc)
  41         self.sink = gst.element_factory_make("ximagesink", "sink")
  42         self.pipeline.add(self.sink)
  43         self.videosrc.link(self.sink)
  44
  45         self.window.show_all()
  46         self.realise()
  47         self.sink.set_xwindow_id(self.screen.window.xid)
  48         self.pipeline.set_state(gst.STATE_PLAYING)
  49
  50
  51 class Control:
  52     def __init__(self):
  53         self.pipeline = gst.Pipeline()
  54         #buttons
  55         self.play_button = gtk.Button(stock=gtk.STOCK_MEDIA_PLAY)
  56         self.play_button.connect("clicked", self.play_onclick)
  57         self.stop_button = gtk.Button(stock=gtk.STOCK_MEDIA_STOP)
  58         self.stop_button.connect("clicked", self.stop_onclick)
  59         self.quit_button = gtk.Button(stock=gtk.STOCK_QUIT)
  60         self.quit_button.connect("clicked", self.quit_onclick)
  61
  62         self.buttons = gtk.HButtonBox()
  63         self.buttons.add(self.play_button)
  64         self.buttons.add(self.stop_button)
  65         self.buttons.add(self.quit_button)
  66
  67         #pack window
  68         self.window = gtk.Window()
  69         self.vbox = gtk.VBox()   # vertical box
  70         self.vbox.pack_start(self.buttons)
  71         self.window.add(self.vbox)
  72         self.window.connect("destroy", self.destroy)
  73         self.window.show_all()
  74
  75
  76
  77     def play_onclick(self, widget):
  78         print "play"
  79         self.start_playing()
  80
  81
  82     def stop_onclick(self, widget):
  83         print "stop"
  84         self.pipeline.set_state(gst.STATE_READY)
  85
  86     def destroy(self, widget, data=None):
  87         print "bye"
  88         gtk.main_quit()
  89
  90     quit_onclick = destroy
  91
  92     def start_playing(self):
  93         self.videosrc = videotestsrc()
  94         self.pipeline.add(self.videosrc)
  95         self.
  96
  97
  98         self.screens = [Screen(pipeline, videosrc, x, SCREENS) for x in range(SCREENS)]
  99
 100         self.sink = gst.element_factory_make("ximagesink", "sink")
 101         self.pipeline.add(self.sink)
 102         self.videosrc.link(self.sink)
 103
 104         self.sink.set_xwindow_id(self.screen.window.xid)
 105
 106         self.pipeline.set_state(gst.STATE_PLAYING)
 107
 108 start = Control()
 109 gtk.main()