[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Gnash] Raw video/audio

From: Jorge Peixoto de Morais Neto
Subject: Re: [Gnash] Raw video/audio
Date: Sat, 22 Mar 2008 06:40:15 -0300

On Fri, Mar 21, 2008 at 2:13 PM, Craig Kelley <address@hidden> wrote:
> Hi Udo,
>  On Fri, Mar 21, 2008 at 10:46 AM, Udo Giacomozzi <address@hidden> wrote:
>  > Hello Craig,
>  >
>  >  Friday, March 21, 2008, 5:22:03 PM, you wrote:
>  >  CK> I've coded up some kludges to get gnash to spit out raw video and
>  >  CK> audio.  It started as a desire to graft XVideo hardware acceleration
>  >  CK> into gnash
>  >
>  >  Excuse my ignorance... but what is XVideo?
>  It is an X11 extension that uses hardware acceleration to scale planar
>  data without using the general-purpose CPU.  Most video cards support
>  this extension under XFree86/xorg.  The Windows analog would be in
>  DirectX somewhere.  With it, you can take a "small" window and blow it
>  up to any size for very little cost.  It was added to Adobe's latest
>  Linux standalone and browser plugins (9.0.115?).  Here is more
>  information about it:
>  >  CK> and most XVideo adapters require YUV;  the translation isn't
>  >  CK> 'cheap' -- ffmpeg's swscale code has inline MMX and SSE to do the
>  >  CK> job.
>  >
>  >  The AGG architecture is flexible enough to allow any kind of color
>  >  format. It's relatively easy to add a YUV pixel format. The tricky
>  >  part is implementing the matching blending and rendering algorithms
>  >  so. Not me, but some skilled AGG developer should be able to do this.
>  That is where I stopped looking as well.  I suspect that it's not
>  trivial to take SWF data and perform that transformation.  I could be
>  wrong.
>  If AGG were to be augmented with YUV output, I have the rest of the
>  XVideo code mostly done to integrate that with Gnash.
>  >  CK> o The video buffer is only exposed in the gui code at the moment, so
>  >  CK> this kludge only works in an arbitrary make (eg, gnash-gtk-agg).
>  >  CK> There is no natural point in the gnash player to access this
>  >  CK> information (AFAICT).
>  >
>  >  I think what you want to do *is* to create a new "GUI"..?
>  That is certainly an option.  Thanks for the suggestion.

*Please* go on with this idea. This would be very useful for me.
Specially because I have some animations that have audio-video desynch
issues in gnash (as compiled from CVS on March 8th ), and I imagine
dumping the movie would solve them.

Thank you very much!

reply via email to

[Prev in Thread] Current Thread [Next in Thread]