Hi, I heard that Theora will be used on OLPC. Is anyone working on optimization for OLPC? Regards, Chih-Chung Chang
hi, right now nobody is working on specific optimization for OLPC; since it is a i386 cpu the mmx / mmxext code in theora-trunk, but also the one in theora-exp for decoding should work. not sure if there are other places for optimization, possibly the FPGA board of the OLPC. again, nobody working on that right now. j On Feb 19, 2007, at 20:40:52, Chih-Chung Chang wrote:> Hi, > > I heard that Theora will be used on OLPC. > Is anyone working on optimization for OLPC? > > Regards, > Chih-Chung Chang > _______________________________________________ > theora-dev mailing list > theora-dev@xiph.org > http://lists.xiph.org/mailman/listinfo/theora-dev >
On Tue, Mar 13, 2007 at 01:21:31PM -0600, Jordan Crouse wrote:> So color conversion is happening in software? The GX has built > in support for YUV->RGB conversion and scaling, so that will > help reduce the processor load considerably, and probably pump > up the decode rates.No, this is raw decode without yuv2rgb conversion or display "overhead", or audio. Still, looks like things are in the realm of possibility. Chih-Chung, I assume you're using libtheora 1.0a7. Could you re-run the decoding tests with dump_video from http://svn.xiph.org/trunk/theora-exp/ ? That should be instructive. Can the camera hardware generate YUV? -r