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100l (signed vs. unsigend)

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Originally committed as revision 3530 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-09-28 05:38:36 +00:00
parent d08d7142fd
commit a5cd3c48fb
1 changed files with 4 additions and 2 deletions
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6
libavcodec/libpostproc/postprocess_template.c
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@ -2707,12 +2707,14 @@ asm volatile(
"paddb %%mm2, %%mm0 \n\t"
"psubusb %%mm3, %%mm4 \n\t"
"pxor %%mm6, %%mm6 \n\t"
"movq %4, %%mm7 \n\t" // QP,..., QP
"paddusb %%mm7, %%mm7 \n\t" // 2QP ... 2QP
"pcmpgtb %%mm4, %%mm7 \n\t" // Diff < 2QP -> FF
"psubusb %%mm4, %%mm7 \n\t" // Diff >=2QP -> 0
"pcmpeqb %%mm6, %%mm7 \n\t" // Diff < 2QP -> 0
"pcmpeqb %%mm6, %%mm7 \n\t" // Diff < 2QP -> 0
"movq %%mm7, %1 \n\t"
"pxor %%mm6, %%mm6 \n\t"
"movq %5, %%mm7 \n\t"
"punpcklbw %%mm7, %%mm7 \n\t"
"punpcklbw %%mm7, %%mm7 \n\t"