[Ffmpeg-devel] [PATCH] idct8 in Altivec for H.264 decoding

Luca Barbato lu_zero
Fri Dec 1 20:37:09 CET 2006

Guillaume POIRIER wrote:

> last call before I apply it.

check this one

> Note that it may break with gcc3.x: ffmpeg can't compile currently

now should build w/out problems

> with gcc 3.3 on PPC, so I don't know if this routine compiles with it
> or not. Probably not.

- avoiding C++ style variable declaration
- vec_sra needs unsigned values for the shift amount
- the h264_idct8_add prototype doesn't have int16 dct[8][8] but DCTELEM
*block as second parameter.

Reproducing h264 videos seems to be ok, the regression test looks broken
for me even w/out patches...



Luca Barbato

Gentoo/linux Gentoo/PPC

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