This time, I wrote my code like this:<div><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> <blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> def video_observer(self, f):</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> img = Image.frombuffer('RGB', (self._width, self._height), f.data, \</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> 'raw', 'RGB', 0, 1)</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> <br></blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> img = img.resize((self.nwidth, self.nheight))</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> img.save('%d.jpg' % self.cnt, 'JPEG') # debug! :-P</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> </blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> imgd = img.tostring('raw', 'RGBA', 0, 1)</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> a = array.array('B', imgd)</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> <br></blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> surface = cairo.ImageSurface.create_for_data(a, cairo.FORMAT_ARGB32, \</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> self.nwidth, self.nheight, self.nwidth * 4) # self.nwidth * 4</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> <br></blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> surface.write_to_png('%d.png' % self.cnt)</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> <br></blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> self.context.set_source_surface(surface, 0, 0)</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> self.context.paint()</blockquote></blockquote><div> </div><div>But...</div><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> File "main.py", line 98, in video_observer</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> imgd = img.tostring('raw', 'RGBA', 0, 1)</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 535, in tostring</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> e = _getencoder(self.mode, encoder_name, args)</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 399, in _getencoder</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> return apply(encoder, (mode,) + args + extra)</blockquote><blockquote class="gmail_quote" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex; "> SystemError: unknown raw mode</blockquote><div><br></div><div><br><div class="gmail_quote">On Sun, Jan 9, 2011 at 2:37 AM, Andrea Canciani <span dir="ltr"><<a href="mailto:ranma42@gmail.com">ranma42@gmail.com</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div><div></div><div class="h5">On Sat, Jan 8, 2011 at 5:09 PM, wecing <<a href="mailto:w3cing@gmail.com">w3cing@gmail.com</a>> wrote:<br> > Currently i'm writing a video player which uses cairo to draw subtitle on<br> > each frame.<br> > I successfully extracted all the frames as PIL Image objects, but I failed<br> > to create cairo surfaces with that.<br> > I refered to <a href="http://cairographics.org/pythoncairopil/" target="_blank">http://cairographics.org/pythoncairopil/</a> , but it seems that<br> > maybe there're some problems in the document.<br> > Here is the traceback:<br> > File "main.py", line 96, in video_observer<br> > img.get_data(), 'raw', 'RGBA', 0, 1)<br> > File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 512, in<br> > __getattr__<br> > raise AttributeError(name)<br> > AttributeError: get_data<br> <br> </div></div>It looks like you're trying to use the get_data() member of a PIL<br> image (but it doesn't exist). get_data() is a member of cairo images,<br> but to access PIL images raw data you might need something like:<br> <br> data = pil_image.tostring("raw","RGBA",0,1)<br> <br> or (if the format is already correct), just:<br> <br> data = pil_image.getdata() # (no underscore between "get" and "data").<br> <br> See <a href="http://www.pythonware.com/library/pil/handbook/image.htm" target="_blank">http://www.pythonware.com/library/pil/handbook/image.htm</a> and<br> <a href="http://cairographics.org/documentation/pycairo/2/reference/surfaces.html#class-imagesurface-surface" target="_blank">http://cairographics.org/documentation/pycairo/2/reference/surfaces.html#class-imagesurface-surface</a><br> for reference.<br> <font color="#888888"><br> Andrea<br> </font></blockquote></div><br></div></div>