On Mon, Jul 21, 2014 at 10:56 AM, James Cameron <qu...@laptop.org> wrote:
> On Mon, Jul 21, 2014 at 02:07:15AM +0530, Puneet Kaur wrote: > > Hey all, > > > > I was able to get the webcam stream using gStreamer through this : > > > > self.src = Gst.ElementFactory.make('autovideosrc', None) > > self.sink = Gst.ElementFactory.make('autovideosink', None) > > > > (and more related corde...) > > Good. > > > but how to modify in order to store the image (on click) to a file / > buffer ? > > > > I tried : > > > > 1) gdk_display = GdkX11.X11Display.get_default() > > gdk_window = > GdkX11.X11Window.foreign_new_for_display(gdk_display,self.xid) > the above two lines for fetching gdk window from a given xid > > width = gdk_window.get_width() > > height = gdk_window.get_height() > width and height of the gdk window > > ims = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height) > make a cairo surface > > > pb = Gdk.pixbuf_get_from_window(gdk_window, 0, 0, width, height) > get the pixbuf from the gdk window > > cr = cairo.Context(ims) > set the cairo context > > Gdk.cairo_set_source_pixbuf(cr, pb, 0, 0) > set cairo source > > cr.paint() > paint on the cairo context and then save the surface by : ims.write_to_png('testimage'+self.snapshot_name()+'.png') > How are you copying the camera image to the surface? I can't see how > you do that in the above example. > > ^ > tacamera.py in plugins/camera_sensor/ in turtleart git was very > interesting; it showed a method _on_message to ensure the pixbuf is > available before proceeding with saving. > > Thanks, would look into it. > -- > James Cameron > http://quozl.linux.org.au/ >
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