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Hi, A few questions: Is libtheora strictly backward compatible with VP3? Can I set it up to shove raw VP3 data through and trust it to decode the same way as On2's open source code did, loop filters and all? Also, is libtheora just supposed to be a C-based reference implementation? I was looking through the code and noticed a distinct lack of any kind of optimizations. Naive tree-based

And this is 3rd try. ---------- Forwarded message ---------- Date: Tue, 30 Nov 2004 19:21:28 +0100 (CET) From: Rudolf Marek <ruik@desitka.sh.cvut.cz> To: theora-dev@xiph.org Cc: avc@sh.cvut.cz Subject: offer to store videos in theora Hello, I hope I can write it to this list. I would like just to remind our offer. We have "academic" connection to internet, so it is possible for us to store/host here large non-...

Today I've got first video clips made by the camera and compressed "on the fly" - 1280x1024x30fps. Image quality is far from perfect - I don't have yet any way to preview images, and a single acquisition still requires a bunch of commands. So I'm really close to have a camera that will be able to serve the Ogg/Theora streams, now but will it be possible to play it on a PC? I

Hi all, I've patched theora-mmx to build on x86_64. The patch against SVN is attached. Basically all I did was to copy lib/i386 to lib/x86_64 and tweak the assembler code a bit: * added to each file: typedef unsigned long int ogg_uint64_t * converted all asm inputs to 64-bit in: dsp_mmxext.c, fdct_mmx.c, recon_mmx.c * left all asm outputs at 32-bit * I didn't patch dsp_mmx.c, since all

Hello, Here is my first speedup patch. Like 10-11%. No IDCT yet. Please feel free to comment my code or even better think about improvements. :) I belive my routines are not so bad, maybe one day they will be even more faster. What needs to be optimized is the loop filter fuction. I have no ideas now how to do it. It does not leave much space for parallel stuff, copying memory from lot of

...reShift 8 + + +ogg_uint16_t __attribute__((aligned(8),used)) idctconstants[(4+7+1) * 4]; +ogg_uint16_t idctcosTbl[ 7] = +{ + 64277, 60547, 54491, 46341, 36410, 25080, 12785 +}; + +/* I'm leaving original VP3 table even I'm not using it whole. It can be used + for MMX quantzation later - Ruik */ + +void fillidctconstants_mmx(void) +{ + int j = 16; + ogg_uint16_t * p; + + do + { + idctconstants[ --j] = 0; + } + while( j); + + idctconstants[0] = idctconstants[5] = idctconstants[10] = idctconstants[15] = 65535; + + j = 1; + do + { + p = idctconstants + ( (j+3) << 2); +...