[maemo-commits] [maemo-commits] r12422 - in projects/tools/trunk/maemo_testing/maemo-examples: . python

[From: subversion at stage.maemo.org]

Author: jampekka
Date: 2007-06-21 14:52:11 +0300 (Thu, 21 Jun 2007)
New Revision: 12422

Added:
   projects/tools/trunk/maemo_testing/maemo-examples/python/
   projects/tools/trunk/maemo_testing/maemo-examples/python/camera.py
Log:
Added python camera example from the Camera HOWTO


Added: projects/tools/trunk/maemo_testing/maemo-examples/python/camera.py
===================================================================
--- projects/tools/trunk/maemo_testing/maemo-examples/python/camera.py	2007-06-21 11:42:55 UTC (rev 12421)
+++ projects/tools/trunk/maemo_testing/maemo-examples/python/camera.py	2007-06-21 11:52:11 UTC (rev 12422)
@@ -0,0 +1,125 @@
+#!/usr/bin/python2.4
+## -*- coding: utf-8 -*-
+
+# Copyright (c) 2006 INdT - Instituto Nokia de Tecnologia, Elvis Pfutzenreuter.
+# Copyright (c) 2007 Nokia Corporation
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+import gtk
+try:
+	import hildon
+except ImportError:
+	hildon = None
+
+import pygst
+pygst.require("0.10")
+import gst
+import time
+
+def delete_event(widget, event, data=None):
+	return False
+
+def destroy(widget, data=None):
+	# it is important to stop pipeline so there will be no
+	# X-related errors when window is destroyed before the video sink
+	pipeline.set_state(gst.STATE_NULL)
+	gtk.main_quit()
+
+sink = None
+screen = None
+
+def expose_cb(dummy1, dummy2, dummy3):
+	print "Expose event"
+	sink.set_xwindow_id(screen.window.xid)	
+
+def buffer_cb(pad, buffer):
+	# Here you have a chance to do something with the image buffer
+	return True
+
+def click_cb(dummy1, dummy2):
+	print "Clicked"
+	# Canvas has been clicked, here you could trigger for the next
+	# buffer_cb() to save the image buffer in a file 
+	return True
+
+if hildon:
+	window = hildon.Window()
+else:
+	window = gtk.Window()
+
+window.set_title("Python Mirror")
+window.connect("delete_event", delete_event)
+window.connect("destroy", destroy)
+window.set_border_width(5)
+
+screen = gtk.DrawingArea()
+screen.set_size_request(500, 380)
+screen.add_events(gtk.gdk.BUTTON_PRESS_MASK)
+screen.connect("expose-event", expose_cb, sink);
+screen.connect("button_press_event", click_cb);
+window.add(screen)
+
+pipeline = gst.Pipeline("mypipeline")
+
+# Alternate sources to run outside of Internet Tablet
+# src = gst.element_factory_make("videotestsrc", "src")
+# src = gst.element_factory_make("v4lsrc", "src") 
+src = gst.element_factory_make("v4l2src", "src")
+pipeline.add(src)
+
+flt = gst.element_factory_make("capsfilter", "flt")
+pipeline.add(flt)
+
+csp = gst.element_factory_make("ffmpegcolorspace", "csp")
+pipeline.add(csp)
+
+caps1 = gst.element_factory_make("capsfilter", "caps1")
+
+# Alternate caps to run outside Internet Tablet (e.g. in a PC with webcam)
+# caps1.set_property('caps', gst.caps_from_string("video/x-raw-rgb,bpp=24,depth=24,width=320,height=240,framerate=15/1"))
+caps1.set_property('caps', gst.caps_from_string("video/x-raw-rgb,width=640,height=480,bpp=24,depth=24,framerate=15/1"))
+
+pipeline.add(caps1)
+
+csp2 = gst.element_factory_make("ffmpegcolorspace", "csp2")
+pipeline.add(csp2)
+
+caps2 = gst.element_factory_make("capsfilter", "caps2")
+caps2.set_property('caps', gst.caps_from_string("video/x-raw-yuv"))
+pipeline.add(caps2)
+
+sink = gst.element_factory_make("xvimagesink", "sink")
+pipeline.add(sink)
+
+pad = src.get_pad('src')
+pad.add_buffer_probe(buffer_cb)
+
+src.link(flt)
+flt.link(csp)
+csp.link(caps1)
+caps1.link(csp2)
+csp2.link(caps2)
+caps2.link(sink)
+
+window.show_all()
+
+pipeline.set_state(gst.STATE_PLAYING)
+
+gtk.main()