Hello Gnash developers; I've coded up some kludges to get gnash to spit out raw video and audio. It started as a desire to graft XVideo hardware acceleration into gnash (even my Pentium 4 desktop drops frames when playing a SWF at full screen with AGG). AGG only outputs RGB24, and most XVideo adapters require YUV; the translation isn't 'cheap' -- ffmpeg's swscale code has inline MMX and SSE to do the job.
So instead, I had gnash spit out the raw BGRA frames, and the SDL-mixed line. Then I used ffmpeg/mencoder to move it to MPEG4 (or whatever) where XVideo acceleration works fine. Is any of this interesting to Gnash developers? The code I have is quite ugly at the moment. It could be made into command-line options, but there are some challenges: o The video buffer is only exposed in the gui code at the moment, so this kludge only works in an arbitrary make (eg, gnash-gtk-agg). There is no natural point in the gnash player to access this information (AFAICT). o I haven't looked at the gst libmedia code; I've worked with SDL and ffmpeg in the past, so I just grabbed the audio stream after mixing took place. I then wrapped it up in a pretty wave header so that any PCM-ish audio player could play it. I suspect it'd require a different method (and routing the output filenames from the command line down, etc.). o Sometimes (often, actually), the sound inside an SWF begins at a later time than the "video". It can also stop. My current code ends up spitting out the concatenated streams all run together (which is fine, for my intended use at the moment). It could be polished to output silence during those moments. Making this code a general patch would require touching a LOT of gnash code (and a fair bit of work). Having native XVideo support would be superior for my first case; but also being able to 'dump' the media for other formats has some merit as well. On the other hand, it's fairly useless for a large set of interactive SWF files (and I have no idea how XVideo would affect interactivity). Any thoughts/suggestions? I love 0.8.2, by the way. It's amazing! -Craig -- http://inconnu.islug.org/~ink finger [EMAIL PROTECTED] for PGP block _______________________________________________ Gnash mailing list Gnash@gnu.org http://lists.gnu.org/mailman/listinfo/gnash
