UDOO - Python Camera example

 It is a Python code to control camera  

We need install  python-gst0.10 ， 

run：

  sudo apt-get install python-gst0.10

Next ,Coding for Python，save code file as name : udoo_camera.py

Next, Run It：

 sudo python udoo_camera.py

udoo_camera.py CODE:

import sys, os
import pygtk, gtk, gobject
import pygst  
pygst.require("0.10")  
import gst  
import time

class GTK_Main:  
        def __init__(self):  
            window = gtk.Window(gtk.WINDOW_TOPLEVEL)  
            window.set_title("UDOO-Camera")  
            window.set_default_size(560, 480)  
            window.connect("destroy", gtk.main_quit, "WM destroy")  
            vbox = gtk.VBox()  
            window.add(vbox)  
            self.movie_window = gtk.DrawingArea()  
            vbox.add(self.movie_window)  
            hbox = gtk.HBox()  
            vbox.pack_start(hbox, False)  
            hbox.set_border_width(10)  
            hbox.pack_start(gtk.Label())  
            self.button = gtk.Button("snapshot")  
            self.button.connect("clicked", self.camera_snapshot)  
            hbox.pack_start(self.button, False)  
            self.button2 = gtk.Button("Quit")  
            self.button2.connect("clicked", self.exit)  
            hbox.pack_start(self.button2, False)  
            hbox.add(gtk.Label())  
            window.show_all()              
            self.player = gst.parse_launch ("mfw_v4lsrc ! mfw_v4lsink")
            bus = self.player.get_bus()
            bus.add_signal_watch()
            bus.enable_sync_message_emission()
            bus.connect("sync-message::element", self.on_sync_message)
            self.player.set_state(gst.STATE_PLAYING)       
        def camera_snapshot(self, w):             
             image= self.movie_window.window.get_image(0, 0, 560, 480)             
             print "Snapshot: "+str(time.time()) 
        def exit(self, widget, data=None):  
            gtk.main_quit()   
        def on_sync_message(self, bus, message):  
            if message.structure is None:  
                return  
            message_name = message.structure.get_name()  
            if message_name == "prepare-xwindow-id":  
                # Assign the viewport  
                imagesink = message.src  
                imagesink.set_property("force-aspect-ratio", True)  
                imagesink.set_xwindow_id(self.movie_window.window.xid)
 
GTK_Main()  
gtk.gdk.threads_init()  
gtk.main()