[FFmpeg-devel] [PATCH] Fix VP3 dequantization matrices when an IDCT permutation is used
Wed Sep 17 12:53:15 CEST 2008
On Wed, Sep 17, 2008 at 01:07:47AM -0400, David Conrad wrote:
> It appears that the reason why the VP3 SSE/MMX IDCTs weren't bitexact to
> the C version was because the dct coefficients weren't being dequantized
> correctly when a permutation was needed. The coefficients are permutated
> correctly in unpack_vlcs() but the dequantization matrices are built
> assuming no permutation. This fix allows both the SSE2 and MMX IDCTs
> produce bitexact output for the VP3 and Theora samples I have.
patches look ok
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
I have often repented speaking, but never of holding my tongue.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 189 bytes
Desc: Digital signature
More information about the ffmpeg-devel