Commit 386eaeb4 authored by Diego Biurrun's avatar Diego Biurrun
Browse files

Remove disabled code cruft.

Originally committed as revision 19668 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 1aff375d
......@@ -349,110 +349,6 @@ static inline void RENAME(doVertLowPass)(uint8_t *src, int stride, PPContext *c)
}
#endif //HAVE_ALTIVEC
#if 0
/**
* Experimental implementation of the filter (Algorithm 1) described in a paper from Ramkishor & Karandikar
* values are correctly clipped (MMX2)
* values are wraparound (C)
* Conclusion: It is fast, but introduces ugly horizontal patterns
* if there is a continuous gradient.
0 8 16 24
x = 8
x/2 = 4
x/8 = 1
1 12 12 23
*/
static inline void RENAME(vertRK1Filter)(uint8_t *src, int stride, int QP)
{
#if HAVE_MMX2 || HAVE_AMD3DNOW
src+= stride*3;
// FIXME rounding
__asm__ volatile(
"pxor %%mm7, %%mm7 \n\t" // 0
"movq "MANGLE(b80)", %%mm6 \n\t" // MIN_SIGNED_BYTE
"leal (%0, %1), %%"REG_a" \n\t"
"leal (%%"REG_a", %1, 4), %%"REG_c" \n\t"
// 0 1 2 3 4 5 6 7 8 9
// %0 eax eax+%1 eax+2%1 %0+4%1 ecx ecx+%1 ecx+2%1 %0+8%1 ecx+4%1
"movq "MANGLE(pQPb)", %%mm0 \n\t" // QP,..., QP
"movq %%mm0, %%mm1 \n\t" // QP,..., QP
"paddusb "MANGLE(b02)", %%mm0 \n\t"
"psrlw $2, %%mm0 \n\t"
"pand "MANGLE(b3F)", %%mm0 \n\t" // QP/4,..., QP/4
"paddusb %%mm1, %%mm0 \n\t" // QP*1.25 ...
"movq (%0, %1, 4), %%mm2 \n\t" // line 4
"movq (%%"REG_c"), %%mm3 \n\t" // line 5
"movq %%mm2, %%mm4 \n\t" // line 4
"pcmpeqb %%mm5, %%mm5 \n\t" // -1
"pxor %%mm2, %%mm5 \n\t" // -line 4 - 1
PAVGB(%%mm3, %%mm5)
"paddb %%mm6, %%mm5 \n\t" // (l5-l4)/2
"psubusb %%mm3, %%mm4 \n\t"
"psubusb %%mm2, %%mm3 \n\t"
"por %%mm3, %%mm4 \n\t" // |l4 - l5|
"psubusb %%mm0, %%mm4 \n\t"
"pcmpeqb %%mm7, %%mm4 \n\t"
"pand %%mm4, %%mm5 \n\t" // d/2
// "paddb %%mm6, %%mm2 \n\t" // line 4 + 0x80
"paddb %%mm5, %%mm2 \n\t"
// "psubb %%mm6, %%mm2 \n\t"
"movq %%mm2, (%0,%1, 4) \n\t"
"movq (%%"REG_c"), %%mm2 \n\t"
// "paddb %%mm6, %%mm2 \n\t" // line 5 + 0x80
"psubb %%mm5, %%mm2 \n\t"
// "psubb %%mm6, %%mm2 \n\t"
"movq %%mm2, (%%"REG_c") \n\t"
"paddb %%mm6, %%mm5 \n\t"
"psrlw $2, %%mm5 \n\t"
"pand "MANGLE(b3F)", %%mm5 \n\t"
"psubb "MANGLE(b20)", %%mm5 \n\t" // (l5-l4)/8
"movq (%%"REG_a", %1, 2), %%mm2 \n\t"
"paddb %%mm6, %%mm2 \n\t" // line 3 + 0x80
"paddsb %%mm5, %%mm2 \n\t"
"psubb %%mm6, %%mm2 \n\t"
"movq %%mm2, (%%"REG_a", %1, 2) \n\t"
"movq (%%"REG_c", %1), %%mm2 \n\t"
"paddb %%mm6, %%mm2 \n\t" // line 6 + 0x80
"psubsb %%mm5, %%mm2 \n\t"
"psubb %%mm6, %%mm2 \n\t"
"movq %%mm2, (%%"REG_c", %1) \n\t"
:
: "r" (src), "r" ((x86_reg)stride)
: "%"REG_a, "%"REG_c
);
#else //HAVE_MMX2 || HAVE_AMD3DNOW
const int l1= stride;
const int l2= stride + l1;
const int l3= stride + l2;
const int l4= stride + l3;
const int l5= stride + l4;
const int l6= stride + l5;
// const int l7= stride + l6;
// const int l8= stride + l7;
// const int l9= stride + l8;
int x;
const int QP15= QP + (QP>>2);
src+= stride*3;
for(x=0; x<BLOCK_SIZE; x++){
const int v = (src[x+l5] - src[x+l4]);
if(FFABS(v) < QP15){
src[x+l3] +=v>>3;
src[x+l4] +=v>>1;
src[x+l5] -=v>>1;
src[x+l6] -=v>>3;
}
}
#endif //HAVE_MMX2 || HAVE_AMD3DNOW
}
#endif //0
/**
* Experimental Filter 1
* will not damage linear gradients
......
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