Re: [Vnc2swf-users] Project Future

[Matthias S. <mat...@uz...>]

hello,

you could use the C library if it is found/built (check at startup), otherwise, just use the python code? :)

matthias 
btw, I use it both under linux (home) & windows (work)

> -----Oorspronkelijk bericht-----
> Van: Yusuke Shinyama [mailto:yu...@cs...] 
> Verzonden: vrijdag 17 april 2009 1:16
> Aan: General discussion about vnc2swf
> Onderwerp: Re: [Vnc2swf-users] Project Future
> 
> Hi,
> 
> To create a speed-efficient recorder, we really need faster 
> byte operations.
> Probably the most expensive part in the current pyvnc2swf 
> implementation is
> just to convert the whole bitmap into another format. 
> 
> More specifically, look at line 61 in image.py:
> 
> def create_image_from_string_argb(w, h, data):
>   data = ''.join([ data[i+1]+data[i+2]+data[i+3]+data[i] for 
> i in xrange(0, len(data), 4) ])
>   return pygame.image.fromstring(data, (w, h), 'RGBA')
> 
> Now imagine a VNC server sends you a 1600x1200 bitmap (7.6MBytes)
> That's a lot of data for doing this kind of operation for each frame.
> 
> For some time I was thinking of writing some external 
> functions in C, which
> would be hundred times faster to do this kinda stuff. But it breaks
> the beauty of platform-independentness.  This is the point 
> where I was stuck.
> People would need to install a C compiler to build pyvnc2swf. 
> Perhaps it's not a big problem in Linux or *BSD, but I was 
> afraid it brings
> some extra trouble. I certainly expect complaints from 
> Windows/Mac folks.
> 
> So... how do you guys think? Maybe I should ask people what kind
> of platform they are using. If cross-platform is not a concern, I
> think this is the way to go.
> 
> Yusuke
> 
> 
> On Thu, 16 Apr 2009 22:33:16 +0200 (CEST), Olivier Hervieu 
> <oli...@wa...> wrote:
> > Great, 
> > 
> > TheAmigo, i think that our needs are the same ... we have 
> to record several (more than 2!!) vnc session on the same computer... 
> > 
> > your idea to write a ffmeg plugin is great that might 
> interressed people who wants to have an authoring/transcoding 
> tool shipped with pyvnc2swf. 
> > 
> > So for the next week i propose that everybody interressed 
> in the project of a safe and fast vncrecorder to send on this 
> mailing list what should and shouldn't be the the vncrecorder. 
> > 
> > I propose the same for people who are interressed in an 
> authoring tool to send here what should be this vncauthoringtool. 
> > 
> 
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