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postprocess_template.c
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postprocess_template.c
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/*
* Copyright (C) 2001-2002 Michael Niedermayer (michaelni@gmx.at)
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* mmx/mmx2/3dnow postprocess code.
*/
#include "libavutil/x86_cpu.h"
#define ALIGN_MASK "$-8"
#undef REAL_PAVGB
#undef PAVGB
#undef PMINUB
#undef PMAXUB
#if HAVE_MMX2
#define REAL_PAVGB(a,b) "pavgb " #a ", " #b " \n\t"
#elif HAVE_AMD3DNOW
#define REAL_PAVGB(a,b) "pavgusb " #a ", " #b " \n\t"
#endif
#define PAVGB(a,b) REAL_PAVGB(a,b)
#if HAVE_MMX2
#define PMINUB(a,b,t) "pminub " #a ", " #b " \n\t"
#elif HAVE_MMX
#define PMINUB(b,a,t) \
"movq " #a ", " #t " \n\t"\
"psubusb " #b ", " #t " \n\t"\
"psubb " #t ", " #a " \n\t"
#endif
#if HAVE_MMX2
#define PMAXUB(a,b) "pmaxub " #a ", " #b " \n\t"
#elif HAVE_MMX
#define PMAXUB(a,b) \
"psubusb " #a ", " #b " \n\t"\
"paddb " #a ", " #b " \n\t"
#endif
//FIXME? |255-0| = 1 (should not be a problem ...)
#if HAVE_MMX
/**
* Check if the middle 8x8 Block in the given 8x16 block is flat
*/
static inline int RENAME(vertClassify)(uint8_t src[], int stride, PPContext *c){
int numEq= 0, dcOk;
src+= stride*4; // src points to begin of the 8x8 Block
__asm__ volatile(
"movq %0, %%mm7 \n\t"
"movq %1, %%mm6 \n\t"
: : "m" (c->mmxDcOffset[c->nonBQP]), "m" (c->mmxDcThreshold[c->nonBQP])
);
__asm__ volatile(
"lea (%2, %3), %%"REG_a" \n\t"
// 0 1 2 3 4 5 6 7 8 9
// %1 eax eax+%2 eax+2%2 %1+4%2 ecx ecx+%2 ecx+2%2 %1+8%2 ecx+4%2
"movq (%2), %%mm0 \n\t"
"movq (%%"REG_a"), %%mm1 \n\t"
"movq %%mm0, %%mm3 \n\t"
"movq %%mm0, %%mm4 \n\t"
PMAXUB(%%mm1, %%mm4)
PMINUB(%%mm1, %%mm3, %%mm5)
"psubb %%mm1, %%mm0 \n\t" // mm0 = differnece
"paddb %%mm7, %%mm0 \n\t"
"pcmpgtb %%mm6, %%mm0 \n\t"
"movq (%%"REG_a",%3), %%mm2 \n\t"
PMAXUB(%%mm2, %%mm4)
PMINUB(%%mm2, %%mm3, %%mm5)
"psubb %%mm2, %%mm1 \n\t"
"paddb %%mm7, %%mm1 \n\t"
"pcmpgtb %%mm6, %%mm1 \n\t"
"paddb %%mm1, %%mm0 \n\t"
"movq (%%"REG_a", %3, 2), %%mm1 \n\t"
PMAXUB(%%mm1, %%mm4)
PMINUB(%%mm1, %%mm3, %%mm5)
"psubb %%mm1, %%mm2 \n\t"
"paddb %%mm7, %%mm2 \n\t"
"pcmpgtb %%mm6, %%mm2 \n\t"
"paddb %%mm2, %%mm0 \n\t"
"lea (%%"REG_a", %3, 4), %%"REG_a" \n\t"
"movq (%2, %3, 4), %%mm2 \n\t"
PMAXUB(%%mm2, %%mm4)
PMINUB(%%mm2, %%mm3, %%mm5)
"psubb %%mm2, %%mm1 \n\t"
"paddb %%mm7, %%mm1 \n\t"
"pcmpgtb %%mm6, %%mm1 \n\t"
"paddb %%mm1, %%mm0 \n\t"
"movq (%%"REG_a"), %%mm1 \n\t"
PMAXUB(%%mm1, %%mm4)
PMINUB(%%mm1, %%mm3, %%mm5)
"psubb %%mm1, %%mm2 \n\t"
"paddb %%mm7, %%mm2 \n\t"
"pcmpgtb %%mm6, %%mm2 \n\t"
"paddb %%mm2, %%mm0 \n\t"
"movq (%%"REG_a", %3), %%mm2 \n\t"
PMAXUB(%%mm2, %%mm4)
PMINUB(%%mm2, %%mm3, %%mm5)
"psubb %%mm2, %%mm1 \n\t"
"paddb %%mm7, %%mm1 \n\t"
"pcmpgtb %%mm6, %%mm1 \n\t"
"paddb %%mm1, %%mm0 \n\t"
"movq (%%"REG_a", %3, 2), %%mm1 \n\t"
PMAXUB(%%mm1, %%mm4)
PMINUB(%%mm1, %%mm3, %%mm5)
"psubb %%mm1, %%mm2 \n\t"
"paddb %%mm7, %%mm2 \n\t"
"pcmpgtb %%mm6, %%mm2 \n\t"
"paddb %%mm2, %%mm0 \n\t"
"psubusb %%mm3, %%mm4 \n\t"
" \n\t"
#if HAVE_MMX2
"pxor %%mm7, %%mm7 \n\t"
"psadbw %%mm7, %%mm0 \n\t"
#else
"movq %%mm0, %%mm1 \n\t"
"psrlw $8, %%mm0 \n\t"
"paddb %%mm1, %%mm0 \n\t"
"movq %%mm0, %%mm1 \n\t"
"psrlq $16, %%mm0 \n\t"
"paddb %%mm1, %%mm0 \n\t"
"movq %%mm0, %%mm1 \n\t"
"psrlq $32, %%mm0 \n\t"
"paddb %%mm1, %%mm0 \n\t"
#endif
"movq %4, %%mm7 \n\t" // QP,..., QP
"paddusb %%mm7, %%mm7 \n\t" // 2QP ... 2QP
"psubusb %%mm7, %%mm4 \n\t" // Diff <= 2QP -> 0
"packssdw %%mm4, %%mm4 \n\t"
"movd %%mm0, %0 \n\t"
"movd %%mm4, %1 \n\t"
: "=r" (numEq), "=r" (dcOk)
: "r" (src), "r" ((x86_reg)stride), "m" (c->pQPb)
: "%"REG_a
);
numEq= (-numEq) &0xFF;
if(numEq > c->ppMode.flatnessThreshold){
if(dcOk) return 0;
else return 1;
}else{
return 2;
}
}
#endif //HAVE_MMX
/**
* Do a vertical low pass filter on the 8x16 block (only write to the 8x8 block in the middle)
* using the 9-Tap Filter (1,1,2,2,4,2,2,1,1)/16
*/
#if !HAVE_ALTIVEC
static inline void RENAME(doVertLowPass)(uint8_t *src, int stride, PPContext *c)
{
#if HAVE_MMX2 || HAVE_AMD3DNOW
src+= stride*3;
__asm__ volatile( //"movv %0 %1 %2\n\t"
"movq %2, %%mm0 \n\t" // QP,..., QP
"pxor %%mm4, %%mm4 \n\t"
"movq (%0), %%mm6 \n\t"
"movq (%0, %1), %%mm5 \n\t"
"movq %%mm5, %%mm1 \n\t"
"movq %%mm6, %%mm2 \n\t"
"psubusb %%mm6, %%mm5 \n\t"
"psubusb %%mm1, %%mm2 \n\t"
"por %%mm5, %%mm2 \n\t" // ABS Diff of lines
"psubusb %%mm0, %%mm2 \n\t" // diff <= QP -> 0
"pcmpeqb %%mm4, %%mm2 \n\t" // diff <= QP -> FF
"pand %%mm2, %%mm6 \n\t"
"pandn %%mm1, %%mm2 \n\t"
"por %%mm2, %%mm6 \n\t"// First Line to Filter
"movq (%0, %1, 8), %%mm5 \n\t"
"lea (%0, %1, 4), %%"REG_a" \n\t"
"lea (%0, %1, 8), %%"REG_c" \n\t"
"sub %1, %%"REG_c" \n\t"
"add %1, %0 \n\t" // %0 points to line 1 not 0
"movq (%0, %1, 8), %%mm7 \n\t"
"movq %%mm5, %%mm1 \n\t"
"movq %%mm7, %%mm2 \n\t"
"psubusb %%mm7, %%mm5 \n\t"
"psubusb %%mm1, %%mm2 \n\t"
"por %%mm5, %%mm2 \n\t" // ABS Diff of lines
"psubusb %%mm0, %%mm2 \n\t" // diff <= QP -> 0
"pcmpeqb %%mm4, %%mm2 \n\t" // diff <= QP -> FF
"pand %%mm2, %%mm7 \n\t"
"pandn %%mm1, %%mm2 \n\t"
"por %%mm2, %%mm7 \n\t" // First Line to Filter
// 1 2 3 4 5 6 7 8
// %0 %0+%1 %0+2%1 eax %0+4%1 eax+2%1 ecx eax+4%1
// 6 4 2 2 1 1
// 6 4 4 2
// 6 8 2
"movq (%0, %1), %%mm0 \n\t" // 1
"movq %%mm0, %%mm1 \n\t" // 1
PAVGB(%%mm6, %%mm0) //1 1 /2
PAVGB(%%mm6, %%mm0) //3 1 /4
"movq (%0, %1, 4), %%mm2 \n\t" // 1
"movq %%mm2, %%mm5 \n\t" // 1
PAVGB((%%REGa), %%mm2) // 11 /2
PAVGB((%0, %1, 2), %%mm2) // 211 /4
"movq %%mm2, %%mm3 \n\t" // 211 /4
"movq (%0), %%mm4 \n\t" // 1
PAVGB(%%mm4, %%mm3) // 4 211 /8
PAVGB(%%mm0, %%mm3) //642211 /16
"movq %%mm3, (%0) \n\t" // X
// mm1=2 mm2=3(211) mm4=1 mm5=5 mm6=0 mm7=9
"movq %%mm1, %%mm0 \n\t" // 1
PAVGB(%%mm6, %%mm0) //1 1 /2
"movq %%mm4, %%mm3 \n\t" // 1
PAVGB((%0,%1,2), %%mm3) // 1 1 /2
PAVGB((%%REGa,%1,2), %%mm5) // 11 /2
PAVGB((%%REGa), %%mm5) // 211 /4
PAVGB(%%mm5, %%mm3) // 2 2211 /8
PAVGB(%%mm0, %%mm3) //4242211 /16
"movq %%mm3, (%0,%1) \n\t" // X
// mm1=2 mm2=3(211) mm4=1 mm5=4(211) mm6=0 mm7=9
PAVGB(%%mm4, %%mm6) //11 /2
"movq (%%"REG_c"), %%mm0 \n\t" // 1
PAVGB((%%REGa, %1, 2), %%mm0) // 11/2
"movq %%mm0, %%mm3 \n\t" // 11/2
PAVGB(%%mm1, %%mm0) // 2 11/4
PAVGB(%%mm6, %%mm0) //222 11/8
PAVGB(%%mm2, %%mm0) //22242211/16
"movq (%0, %1, 2), %%mm2 \n\t" // 1
"movq %%mm0, (%0, %1, 2) \n\t" // X
// mm1=2 mm2=3 mm3=6(11) mm4=1 mm5=4(211) mm6=0(11) mm7=9
"movq (%%"REG_a", %1, 4), %%mm0 \n\t" // 1
PAVGB((%%REGc), %%mm0) // 11 /2
PAVGB(%%mm0, %%mm6) //11 11 /4
PAVGB(%%mm1, %%mm4) // 11 /2
PAVGB(%%mm2, %%mm1) // 11 /2
PAVGB(%%mm1, %%mm6) //1122 11 /8
PAVGB(%%mm5, %%mm6) //112242211 /16
"movq (%%"REG_a"), %%mm5 \n\t" // 1
"movq %%mm6, (%%"REG_a") \n\t" // X
// mm0=7(11) mm1=2(11) mm2=3 mm3=6(11) mm4=1(11) mm5=4 mm7=9
"movq (%%"REG_a", %1, 4), %%mm6 \n\t" // 1
PAVGB(%%mm7, %%mm6) // 11 /2
PAVGB(%%mm4, %%mm6) // 11 11 /4
PAVGB(%%mm3, %%mm6) // 11 2211 /8
PAVGB(%%mm5, %%mm2) // 11 /2
"movq (%0, %1, 4), %%mm4 \n\t" // 1
PAVGB(%%mm4, %%mm2) // 112 /4
PAVGB(%%mm2, %%mm6) // 112242211 /16
"movq %%mm6, (%0, %1, 4) \n\t" // X
// mm0=7(11) mm1=2(11) mm2=3(112) mm3=6(11) mm4=5 mm5=4 mm7=9
PAVGB(%%mm7, %%mm1) // 11 2 /4
PAVGB(%%mm4, %%mm5) // 11 /2
PAVGB(%%mm5, %%mm0) // 11 11 /4
"movq (%%"REG_a", %1, 2), %%mm6 \n\t" // 1
PAVGB(%%mm6, %%mm1) // 11 4 2 /8
PAVGB(%%mm0, %%mm1) // 11224222 /16
"movq %%mm1, (%%"REG_a", %1, 2) \n\t" // X
// mm2=3(112) mm3=6(11) mm4=5 mm5=4(11) mm6=6 mm7=9
PAVGB((%%REGc), %%mm2) // 112 4 /8
"movq (%%"REG_a", %1, 4), %%mm0 \n\t" // 1
PAVGB(%%mm0, %%mm6) // 1 1 /2
PAVGB(%%mm7, %%mm6) // 1 12 /4
PAVGB(%%mm2, %%mm6) // 1122424 /4
"movq %%mm6, (%%"REG_c") \n\t" // X
// mm0=8 mm3=6(11) mm4=5 mm5=4(11) mm7=9
PAVGB(%%mm7, %%mm5) // 11 2 /4
PAVGB(%%mm7, %%mm5) // 11 6 /8
PAVGB(%%mm3, %%mm0) // 112 /4
PAVGB(%%mm0, %%mm5) // 112246 /16
"movq %%mm5, (%%"REG_a", %1, 4) \n\t" // X
"sub %1, %0 \n\t"
:
: "r" (src), "r" ((x86_reg)stride), "m" (c->pQPb)
: "%"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;
src+= stride*3;
for(x=0; x<BLOCK_SIZE; x++){
const int first= FFABS(src[0] - src[l1]) < c->QP ? src[0] : src[l1];
const int last= FFABS(src[l8] - src[l9]) < c->QP ? src[l9] : src[l8];
int sums[10];
sums[0] = 4*first + src[l1] + src[l2] + src[l3] + 4;
sums[1] = sums[0] - first + src[l4];
sums[2] = sums[1] - first + src[l5];
sums[3] = sums[2] - first + src[l6];
sums[4] = sums[3] - first + src[l7];
sums[5] = sums[4] - src[l1] + src[l8];
sums[6] = sums[5] - src[l2] + last;
sums[7] = sums[6] - src[l3] + last;
sums[8] = sums[7] - src[l4] + last;
sums[9] = sums[8] - src[l5] + last;
src[l1]= (sums[0] + sums[2] + 2*src[l1])>>4;
src[l2]= (sums[1] + sums[3] + 2*src[l2])>>4;
src[l3]= (sums[2] + sums[4] + 2*src[l3])>>4;
src[l4]= (sums[3] + sums[5] + 2*src[l4])>>4;
src[l5]= (sums[4] + sums[6] + 2*src[l5])>>4;
src[l6]= (sums[5] + sums[7] + 2*src[l6])>>4;
src[l7]= (sums[6] + sums[8] + 2*src[l7])>>4;
src[l8]= (sums[7] + sums[9] + 2*src[l8])>>4;
src++;
}
#endif //HAVE_MMX2 || HAVE_AMD3DNOW
}
#endif //HAVE_ALTIVEC
/**
* Experimental Filter 1
* will not damage linear gradients
* Flat blocks should look like they were passed through the (1,1,2,2,4,2,2,1,1) 9-Tap filter
* can only smooth blocks at the expected locations (it cannot smooth them if they did move)
* MMX2 version does correct clipping C version does not
*/
static inline void RENAME(vertX1Filter)(uint8_t *src, int stride, PPContext *co)
{
#if HAVE_MMX2 || HAVE_AMD3DNOW
src+= stride*3;
__asm__ volatile(
"pxor %%mm7, %%mm7 \n\t" // 0
"lea (%0, %1), %%"REG_a" \n\t"
"lea (%%"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 (%%"REG_a", %1, 2), %%mm0 \n\t" // line 3
"movq (%0, %1, 4), %%mm1 \n\t" // line 4
"movq %%mm1, %%mm2 \n\t" // line 4
"psubusb %%mm0, %%mm1 \n\t"
"psubusb %%mm2, %%mm0 \n\t"
"por %%mm1, %%mm0 \n\t" // |l2 - l3|
"movq (%%"REG_c"), %%mm3 \n\t" // line 5
"movq (%%"REG_c", %1), %%mm4 \n\t" // line 6
"movq %%mm3, %%mm5 \n\t" // line 5
"psubusb %%mm4, %%mm3 \n\t"
"psubusb %%mm5, %%mm4 \n\t"
"por %%mm4, %%mm3 \n\t" // |l5 - l6|
PAVGB(%%mm3, %%mm0) // (|l2 - l3| + |l5 - l6|)/2
"movq %%mm2, %%mm1 \n\t" // line 4
"psubusb %%mm5, %%mm2 \n\t"
"movq %%mm2, %%mm4 \n\t"
"pcmpeqb %%mm7, %%mm2 \n\t" // (l4 - l5) <= 0 ? -1 : 0
"psubusb %%mm1, %%mm5 \n\t"
"por %%mm5, %%mm4 \n\t" // |l4 - l5|
"psubusb %%mm0, %%mm4 \n\t" //d = MAX(0, |l4-l5| - (|l2-l3| + |l5-l6|)/2)
"movq %%mm4, %%mm3 \n\t" // d
"movq %2, %%mm0 \n\t"
"paddusb %%mm0, %%mm0 \n\t"
"psubusb %%mm0, %%mm4 \n\t"
"pcmpeqb %%mm7, %%mm4 \n\t" // d <= QP ? -1 : 0
"psubusb "MANGLE(b01)", %%mm3 \n\t"
"pand %%mm4, %%mm3 \n\t" // d <= QP ? d : 0
PAVGB(%%mm7, %%mm3) // d/2
"movq %%mm3, %%mm1 \n\t" // d/2
PAVGB(%%mm7, %%mm3) // d/4
PAVGB(%%mm1, %%mm3) // 3*d/8
"movq (%0, %1, 4), %%mm0 \n\t" // line 4
"pxor %%mm2, %%mm0 \n\t" //(l4 - l5) <= 0 ? -l4-1 : l4
"psubusb %%mm3, %%mm0 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"movq %%mm0, (%0, %1, 4) \n\t" // line 4
"movq (%%"REG_c"), %%mm0 \n\t" // line 5
"pxor %%mm2, %%mm0 \n\t" //(l4 - l5) <= 0 ? -l5-1 : l5
"paddusb %%mm3, %%mm0 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"movq %%mm0, (%%"REG_c") \n\t" // line 5
PAVGB(%%mm7, %%mm1) // d/4
"movq (%%"REG_a", %1, 2), %%mm0 \n\t" // line 3
"pxor %%mm2, %%mm0 \n\t" //(l4 - l5) <= 0 ? -l4-1 : l4
"psubusb %%mm1, %%mm0 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"movq %%mm0, (%%"REG_a", %1, 2) \n\t" // line 3
"movq (%%"REG_c", %1), %%mm0 \n\t" // line 6
"pxor %%mm2, %%mm0 \n\t" //(l4 - l5) <= 0 ? -l5-1 : l5
"paddusb %%mm1, %%mm0 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"movq %%mm0, (%%"REG_c", %1) \n\t" // line 6
PAVGB(%%mm7, %%mm1) // d/8
"movq (%%"REG_a", %1), %%mm0 \n\t" // line 2
"pxor %%mm2, %%mm0 \n\t" //(l4 - l5) <= 0 ? -l2-1 : l2
"psubusb %%mm1, %%mm0 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"movq %%mm0, (%%"REG_a", %1) \n\t" // line 2
"movq (%%"REG_c", %1, 2), %%mm0 \n\t" // line 7
"pxor %%mm2, %%mm0 \n\t" //(l4 - l5) <= 0 ? -l7-1 : l7
"paddusb %%mm1, %%mm0 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"movq %%mm0, (%%"REG_c", %1, 2) \n\t" // line 7
:
: "r" (src), "r" ((x86_reg)stride), "m" (co->pQPb)
: "%"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;
src+= stride*3;
for(x=0; x<BLOCK_SIZE; x++){
int a= src[l3] - src[l4];
int b= src[l4] - src[l5];
int c= src[l5] - src[l6];
int d= FFABS(b) - ((FFABS(a) + FFABS(c))>>1);
d= FFMAX(d, 0);
if(d < co->QP*2){
int v = d * FFSIGN(-b);
src[l2] +=v>>3;
src[l3] +=v>>2;
src[l4] +=(3*v)>>3;
src[l5] -=(3*v)>>3;
src[l6] -=v>>2;
src[l7] -=v>>3;
}
src++;
}
#endif //HAVE_MMX2 || HAVE_AMD3DNOW
}
#if !HAVE_ALTIVEC
static inline void RENAME(doVertDefFilter)(uint8_t src[], int stride, PPContext *c)
{
#if HAVE_MMX2 || HAVE_AMD3DNOW
/*
uint8_t tmp[16];
const int l1= stride;
const int l2= stride + l1;
const int l3= stride + l2;
const int l4= (int)tmp - (int)src - stride*3;
const int l5= (int)tmp - (int)src - stride*3 + 8;
const int l6= stride*3 + l3;
const int l7= stride + l6;
const int l8= stride + l7;
memcpy(tmp, src+stride*7, 8);
memcpy(tmp+8, src+stride*8, 8);
*/
src+= stride*4;
__asm__ volatile(
#if 0 //slightly more accurate and slightly slower
"pxor %%mm7, %%mm7 \n\t" // 0
"lea (%0, %1), %%"REG_a" \n\t"
"lea (%%"REG_a", %1, 4), %%"REG_c" \n\t"
// 0 1 2 3 4 5 6 7
// %0 %0+%1 %0+2%1 eax+2%1 %0+4%1 eax+4%1 ecx+%1 ecx+2%1
// %0 eax eax+%1 eax+2%1 %0+4%1 ecx ecx+%1 ecx+2%1
"movq (%0, %1, 2), %%mm0 \n\t" // l2
"movq (%0), %%mm1 \n\t" // l0
"movq %%mm0, %%mm2 \n\t" // l2
PAVGB(%%mm7, %%mm0) // ~l2/2
PAVGB(%%mm1, %%mm0) // ~(l2 + 2l0)/4
PAVGB(%%mm2, %%mm0) // ~(5l2 + 2l0)/8
"movq (%%"REG_a"), %%mm1 \n\t" // l1
"movq (%%"REG_a", %1, 2), %%mm3 \n\t" // l3
"movq %%mm1, %%mm4 \n\t" // l1
PAVGB(%%mm7, %%mm1) // ~l1/2
PAVGB(%%mm3, %%mm1) // ~(l1 + 2l3)/4
PAVGB(%%mm4, %%mm1) // ~(5l1 + 2l3)/8
"movq %%mm0, %%mm4 \n\t" // ~(5l2 + 2l0)/8
"psubusb %%mm1, %%mm0 \n\t"
"psubusb %%mm4, %%mm1 \n\t"
"por %%mm0, %%mm1 \n\t" // ~|2l0 - 5l1 + 5l2 - 2l3|/8
// mm1= |lenergy|, mm2= l2, mm3= l3, mm7=0
"movq (%0, %1, 4), %%mm0 \n\t" // l4
"movq %%mm0, %%mm4 \n\t" // l4
PAVGB(%%mm7, %%mm0) // ~l4/2
PAVGB(%%mm2, %%mm0) // ~(l4 + 2l2)/4
PAVGB(%%mm4, %%mm0) // ~(5l4 + 2l2)/8
"movq (%%"REG_c"), %%mm2 \n\t" // l5
"movq %%mm3, %%mm5 \n\t" // l3
PAVGB(%%mm7, %%mm3) // ~l3/2
PAVGB(%%mm2, %%mm3) // ~(l3 + 2l5)/4
PAVGB(%%mm5, %%mm3) // ~(5l3 + 2l5)/8
"movq %%mm0, %%mm6 \n\t" // ~(5l4 + 2l2)/8
"psubusb %%mm3, %%mm0 \n\t"
"psubusb %%mm6, %%mm3 \n\t"
"por %%mm0, %%mm3 \n\t" // ~|2l2 - 5l3 + 5l4 - 2l5|/8
"pcmpeqb %%mm7, %%mm0 \n\t" // SIGN(2l2 - 5l3 + 5l4 - 2l5)
// mm0= SIGN(menergy), mm1= |lenergy|, mm2= l5, mm3= |menergy|, mm4=l4, mm5= l3, mm7=0
"movq (%%"REG_c", %1), %%mm6 \n\t" // l6
"movq %%mm6, %%mm5 \n\t" // l6
PAVGB(%%mm7, %%mm6) // ~l6/2
PAVGB(%%mm4, %%mm6) // ~(l6 + 2l4)/4
PAVGB(%%mm5, %%mm6) // ~(5l6 + 2l4)/8
"movq (%%"REG_c", %1, 2), %%mm5 \n\t" // l7
"movq %%mm2, %%mm4 \n\t" // l5
PAVGB(%%mm7, %%mm2) // ~l5/2
PAVGB(%%mm5, %%mm2) // ~(l5 + 2l7)/4
PAVGB(%%mm4, %%mm2) // ~(5l5 + 2l7)/8
"movq %%mm6, %%mm4 \n\t" // ~(5l6 + 2l4)/8
"psubusb %%mm2, %%mm6 \n\t"
"psubusb %%mm4, %%mm2 \n\t"
"por %%mm6, %%mm2 \n\t" // ~|2l4 - 5l5 + 5l6 - 2l7|/8
// mm0= SIGN(menergy), mm1= |lenergy|/8, mm2= |renergy|/8, mm3= |menergy|/8, mm7=0
PMINUB(%%mm2, %%mm1, %%mm4) // MIN(|lenergy|,|renergy|)/8
"movq %2, %%mm4 \n\t" // QP //FIXME QP+1 ?
"paddusb "MANGLE(b01)", %%mm4 \n\t"
"pcmpgtb %%mm3, %%mm4 \n\t" // |menergy|/8 < QP
"psubusb %%mm1, %%mm3 \n\t" // d=|menergy|/8-MIN(|lenergy|,|renergy|)/8
"pand %%mm4, %%mm3 \n\t"
"movq %%mm3, %%mm1 \n\t"
// "psubusb "MANGLE(b01)", %%mm3 \n\t"
PAVGB(%%mm7, %%mm3)
PAVGB(%%mm7, %%mm3)
"paddusb %%mm1, %%mm3 \n\t"
// "paddusb "MANGLE(b01)", %%mm3 \n\t"
"movq (%%"REG_a", %1, 2), %%mm6 \n\t" //l3
"movq (%0, %1, 4), %%mm5 \n\t" //l4
"movq (%0, %1, 4), %%mm4 \n\t" //l4
"psubusb %%mm6, %%mm5 \n\t"
"psubusb %%mm4, %%mm6 \n\t"
"por %%mm6, %%mm5 \n\t" // |l3-l4|
"pcmpeqb %%mm7, %%mm6 \n\t" // SIGN(l3-l4)
"pxor %%mm6, %%mm0 \n\t"
"pand %%mm0, %%mm3 \n\t"
PMINUB(%%mm5, %%mm3, %%mm0)
"psubusb "MANGLE(b01)", %%mm3 \n\t"
PAVGB(%%mm7, %%mm3)
"movq (%%"REG_a", %1, 2), %%mm0 \n\t"
"movq (%0, %1, 4), %%mm2 \n\t"
"pxor %%mm6, %%mm0 \n\t"
"pxor %%mm6, %%mm2 \n\t"
"psubb %%mm3, %%mm0 \n\t"
"paddb %%mm3, %%mm2 \n\t"
"pxor %%mm6, %%mm0 \n\t"
"pxor %%mm6, %%mm2 \n\t"
"movq %%mm0, (%%"REG_a", %1, 2) \n\t"
"movq %%mm2, (%0, %1, 4) \n\t"
#endif //0
"lea (%0, %1), %%"REG_a" \n\t"
"pcmpeqb %%mm6, %%mm6 \n\t" // -1
// 0 1 2 3 4 5 6 7
// %0 %0+%1 %0+2%1 eax+2%1 %0+4%1 eax+4%1 ecx+%1 ecx+2%1
// %0 eax eax+%1 eax+2%1 %0+4%1 ecx ecx+%1 ecx+2%1
"movq (%%"REG_a", %1, 2), %%mm1 \n\t" // l3
"movq (%0, %1, 4), %%mm0 \n\t" // l4
"pxor %%mm6, %%mm1 \n\t" // -l3-1
PAVGB(%%mm1, %%mm0) // -q+128 = (l4-l3+256)/2
// mm1=-l3-1, mm0=128-q
"movq (%%"REG_a", %1, 4), %%mm2 \n\t" // l5
"movq (%%"REG_a", %1), %%mm3 \n\t" // l2
"pxor %%mm6, %%mm2 \n\t" // -l5-1
"movq %%mm2, %%mm5 \n\t" // -l5-1
"movq "MANGLE(b80)", %%mm4 \n\t" // 128
"lea (%%"REG_a", %1, 4), %%"REG_c" \n\t"
PAVGB(%%mm3, %%mm2) // (l2-l5+256)/2
PAVGB(%%mm0, %%mm4) // ~(l4-l3)/4 + 128
PAVGB(%%mm2, %%mm4) // ~(l2-l5)/4 +(l4-l3)/8 + 128
PAVGB(%%mm0, %%mm4) // ~(l2-l5)/8 +5(l4-l3)/16 + 128
// mm1=-l3-1, mm0=128-q, mm3=l2, mm4=menergy/16 + 128, mm5= -l5-1
"movq (%%"REG_a"), %%mm2 \n\t" // l1
"pxor %%mm6, %%mm2 \n\t" // -l1-1
PAVGB(%%mm3, %%mm2) // (l2-l1+256)/2
PAVGB((%0), %%mm1) // (l0-l3+256)/2
"movq "MANGLE(b80)", %%mm3 \n\t" // 128
PAVGB(%%mm2, %%mm3) // ~(l2-l1)/4 + 128
PAVGB(%%mm1, %%mm3) // ~(l0-l3)/4 +(l2-l1)/8 + 128
PAVGB(%%mm2, %%mm3) // ~(l0-l3)/8 +5(l2-l1)/16 + 128
// mm0=128-q, mm3=lenergy/16 + 128, mm4= menergy/16 + 128, mm5= -l5-1
PAVGB((%%REGc, %1), %%mm5) // (l6-l5+256)/2
"movq (%%"REG_c", %1, 2), %%mm1 \n\t" // l7
"pxor %%mm6, %%mm1 \n\t" // -l7-1
PAVGB((%0, %1, 4), %%mm1) // (l4-l7+256)/2
"movq "MANGLE(b80)", %%mm2 \n\t" // 128
PAVGB(%%mm5, %%mm2) // ~(l6-l5)/4 + 128
PAVGB(%%mm1, %%mm2) // ~(l4-l7)/4 +(l6-l5)/8 + 128
PAVGB(%%mm5, %%mm2) // ~(l4-l7)/8 +5(l6-l5)/16 + 128
// mm0=128-q, mm2=renergy/16 + 128, mm3=lenergy/16 + 128, mm4= menergy/16 + 128
"movq "MANGLE(b00)", %%mm1 \n\t" // 0
"movq "MANGLE(b00)", %%mm5 \n\t" // 0
"psubb %%mm2, %%mm1 \n\t" // 128 - renergy/16
"psubb %%mm3, %%mm5 \n\t" // 128 - lenergy/16
PMAXUB(%%mm1, %%mm2) // 128 + |renergy/16|
PMAXUB(%%mm5, %%mm3) // 128 + |lenergy/16|
PMINUB(%%mm2, %%mm3, %%mm1) // 128 + MIN(|lenergy|,|renergy|)/16
// mm0=128-q, mm3=128 + MIN(|lenergy|,|renergy|)/16, mm4= menergy/16 + 128
"movq "MANGLE(b00)", %%mm7 \n\t" // 0
"movq %2, %%mm2 \n\t" // QP
PAVGB(%%mm6, %%mm2) // 128 + QP/2
"psubb %%mm6, %%mm2 \n\t"
"movq %%mm4, %%mm1 \n\t"
"pcmpgtb %%mm7, %%mm1 \n\t" // SIGN(menergy)
"pxor %%mm1, %%mm4 \n\t"
"psubb %%mm1, %%mm4 \n\t" // 128 + |menergy|/16
"pcmpgtb %%mm4, %%mm2 \n\t" // |menergy|/16 < QP/2
"psubusb %%mm3, %%mm4 \n\t" //d=|menergy|/16 - MIN(|lenergy|,|renergy|)/16
// mm0=128-q, mm1= SIGN(menergy), mm2= |menergy|/16 < QP/2, mm4= d/16
"movq %%mm4, %%mm3 \n\t" // d
"psubusb "MANGLE(b01)", %%mm4 \n\t"
PAVGB(%%mm7, %%mm4) // d/32
PAVGB(%%mm7, %%mm4) // (d + 32)/64
"paddb %%mm3, %%mm4 \n\t" // 5d/64
"pand %%mm2, %%mm4 \n\t"
"movq "MANGLE(b80)", %%mm5 \n\t" // 128
"psubb %%mm0, %%mm5 \n\t" // q
"paddsb %%mm6, %%mm5 \n\t" // fix bad rounding
"pcmpgtb %%mm5, %%mm7 \n\t" // SIGN(q)
"pxor %%mm7, %%mm5 \n\t"
PMINUB(%%mm5, %%mm4, %%mm3) // MIN(|q|, 5d/64)
"pxor %%mm1, %%mm7 \n\t" // SIGN(d*q)
"pand %%mm7, %%mm4 \n\t"
"movq (%%"REG_a", %1, 2), %%mm0 \n\t"
"movq (%0, %1, 4), %%mm2 \n\t"
"pxor %%mm1, %%mm0 \n\t"
"pxor %%mm1, %%mm2 \n\t"
"paddb %%mm4, %%mm0 \n\t"
"psubb %%mm4, %%mm2 \n\t"
"pxor %%mm1, %%mm0 \n\t"
"pxor %%mm1, %%mm2 \n\t"
"movq %%mm0, (%%"REG_a", %1, 2) \n\t"
"movq %%mm2, (%0, %1, 4) \n\t"
:
: "r" (src), "r" ((x86_reg)stride), "m" (c->pQPb)
: "%"REG_a, "%"REG_c
);
/*
{
int x;
src-= stride;
for(x=0; x<BLOCK_SIZE; x++){
const int middleEnergy= 5*(src[l5] - src[l4]) + 2*(src[l3] - src[l6]);
if(FFABS(middleEnergy)< 8*QP){
const int q=(src[l4] - src[l5])/2;
const int leftEnergy= 5*(src[l3] - src[l2]) + 2*(src[l1] - src[l4]);
const int rightEnergy= 5*(src[l7] - src[l6]) + 2*(src[l5] - src[l8]);
int d= FFABS(middleEnergy) - FFMIN( FFABS(leftEnergy), FFABS(rightEnergy) );
d= FFMAX(d, 0);
d= (5*d + 32) >> 6;
d*= FFSIGN(-middleEnergy);
if(q>0){
d= d<0 ? 0 : d;
d= d>q ? q : d;
}else{
d= d>0 ? 0 : d;
d= d<q ? q : d;
}
src[l4]-= d;
src[l5]+= d;
}
src++;
}
src-=8;
for(x=0; x<8; x++){
int y;
for(y=4; y<6; y++){
int d= src[x+y*stride] - tmp[x+(y-4)*8];
int ad= FFABS(d);
static int max=0;
static int sum=0;
static int num=0;
static int bias=0;
if(max<ad) max=ad;
sum+= ad>3 ? 1 : 0;
if(ad>3){
src[0] = src[7] = src[stride*7] = src[(stride+1)*7]=255;
}
if(y==4) bias+=d;
num++;
if(num%1000000 == 0){
av_log(c, AV_LOG_INFO, " %d %d %d %d\n", num, sum, max, bias);
}
}
}
}
*/
#elif HAVE_MMX
src+= stride*4;
__asm__ volatile(
"pxor %%mm7, %%mm7 \n\t"
"lea -40(%%"REG_SP"), %%"REG_c" \n\t" // make space for 4 8-byte vars
"and "ALIGN_MASK", %%"REG_c" \n\t" // align
// 0 1 2 3 4 5 6 7
// %0 %0+%1 %0+2%1 eax+2%1 %0+4%1 eax+4%1 edx+%1 edx+2%1
// %0 eax eax+%1 eax+2%1 %0+4%1 edx edx+%1 edx+2%1
"movq (%0), %%mm0 \n\t"
"movq %%mm0, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t" // low part of line 0
"punpckhbw %%mm7, %%mm1 \n\t" // high part of line 0
"movq (%0, %1), %%mm2 \n\t"
"lea (%0, %1, 2), %%"REG_a" \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t" // low part of line 1
"punpckhbw %%mm7, %%mm3 \n\t" // high part of line 1
"movq (%%"REG_a"), %%mm4 \n\t"
"movq %%mm4, %%mm5 \n\t"
"punpcklbw %%mm7, %%mm4 \n\t" // low part of line 2
"punpckhbw %%mm7, %%mm5 \n\t" // high part of line 2
"paddw %%mm0, %%mm0 \n\t" // 2L0
"paddw %%mm1, %%mm1 \n\t" // 2H0
"psubw %%mm4, %%mm2 \n\t" // L1 - L2
"psubw %%mm5, %%mm3 \n\t" // H1 - H2
"psubw %%mm2, %%mm0 \n\t" // 2L0 - L1 + L2
"psubw %%mm3, %%mm1 \n\t" // 2H0 - H1 + H2
"psllw $2, %%mm2 \n\t" // 4L1 - 4L2
"psllw $2, %%mm3 \n\t" // 4H1 - 4H2
"psubw %%mm2, %%mm0 \n\t" // 2L0 - 5L1 + 5L2
"psubw %%mm3, %%mm1 \n\t" // 2H0 - 5H1 + 5H2
"movq (%%"REG_a", %1), %%mm2 \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t" // L3
"punpckhbw %%mm7, %%mm3 \n\t" // H3
"psubw %%mm2, %%mm0 \n\t" // 2L0 - 5L1 + 5L2 - L3
"psubw %%mm3, %%mm1 \n\t" // 2H0 - 5H1 + 5H2 - H3
"psubw %%mm2, %%mm0 \n\t" // 2L0 - 5L1 + 5L2 - 2L3
"psubw %%mm3, %%mm1 \n\t" // 2H0 - 5H1 + 5H2 - 2H3
"movq %%mm0, (%%"REG_c") \n\t" // 2L0 - 5L1 + 5L2 - 2L3
"movq %%mm1, 8(%%"REG_c") \n\t" // 2H0 - 5H1 + 5H2 - 2H3
"movq (%%"REG_a", %1, 2), %%mm0 \n\t"
"movq %%mm0, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t" // L4
"punpckhbw %%mm7, %%mm1 \n\t" // H4
"psubw %%mm0, %%mm2 \n\t" // L3 - L4
"psubw %%mm1, %%mm3 \n\t" // H3 - H4
"movq %%mm2, 16(%%"REG_c") \n\t" // L3 - L4
"movq %%mm3, 24(%%"REG_c") \n\t" // H3 - H4
"paddw %%mm4, %%mm4 \n\t" // 2L2
"paddw %%mm5, %%mm5 \n\t" // 2H2
"psubw %%mm2, %%mm4 \n\t" // 2L2 - L3 + L4
"psubw %%mm3, %%mm5 \n\t" // 2H2 - H3 + H4
"lea (%%"REG_a", %1), %0 \n\t"
"psllw $2, %%mm2 \n\t" // 4L3 - 4L4
"psllw $2, %%mm3 \n\t" // 4H3 - 4H4
"psubw %%mm2, %%mm4 \n\t" // 2L2 - 5L3 + 5L4
"psubw %%mm3, %%mm5 \n\t" // 2H2 - 5H3 + 5H4
//50 opcodes so far
"movq (%0, %1, 2), %%mm2 \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t" // L5
"punpckhbw %%mm7, %%mm3 \n\t" // H5
"psubw %%mm2, %%mm4 \n\t" // 2L2 - 5L3 + 5L4 - L5
"psubw %%mm3, %%mm5 \n\t" // 2H2 - 5H3 + 5H4 - H5
"psubw %%mm2, %%mm4 \n\t" // 2L2 - 5L3 + 5L4 - 2L5
"psubw %%mm3, %%mm5 \n\t" // 2H2 - 5H3 + 5H4 - 2H5
"movq (%%"REG_a", %1, 4), %%mm6 \n\t"
"punpcklbw %%mm7, %%mm6 \n\t" // L6
"psubw %%mm6, %%mm2 \n\t" // L5 - L6
"movq (%%"REG_a", %1, 4), %%mm6 \n\t"
"punpckhbw %%mm7, %%mm6 \n\t" // H6
"psubw %%mm6, %%mm3 \n\t" // H5 - H6
"paddw %%mm0, %%mm0 \n\t" // 2L4
"paddw %%mm1, %%mm1 \n\t" // 2H4
"psubw %%mm2, %%mm0 \n\t" // 2L4 - L5 + L6
"psubw %%mm3, %%mm1 \n\t" // 2H4 - H5 + H6
"psllw $2, %%mm2 \n\t" // 4L5 - 4L6
"psllw $2, %%mm3 \n\t" // 4H5 - 4H6
"psubw %%mm2, %%mm0 \n\t" // 2L4 - 5L5 + 5L6
"psubw %%mm3, %%mm1 \n\t" // 2H4 - 5H5 + 5H6
"movq (%0, %1, 4), %%mm2 \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t" // L7
"punpckhbw %%mm7, %%mm3 \n\t" // H7
"paddw %%mm2, %%mm2 \n\t" // 2L7
"paddw %%mm3, %%mm3 \n\t" // 2H7
"psubw %%mm2, %%mm0 \n\t" // 2L4 - 5L5 + 5L6 - 2L7
"psubw %%mm3, %%mm1 \n\t" // 2H4 - 5H5 + 5H6 - 2H7
"movq (%%"REG_c"), %%mm2 \n\t" // 2L0 - 5L1 + 5L2 - 2L3
"movq 8(%%"REG_c"), %%mm3 \n\t" // 2H0 - 5H1 + 5H2 - 2H3
#if HAVE_MMX2
"movq %%mm7, %%mm6 \n\t" // 0
"psubw %%mm0, %%mm6 \n\t"
"pmaxsw %%mm6, %%mm0 \n\t" // |2L4 - 5L5 + 5L6 - 2L7|
"movq %%mm7, %%mm6 \n\t" // 0
"psubw %%mm1, %%mm6 \n\t"
"pmaxsw %%mm6, %%mm1 \n\t" // |2H4 - 5H5 + 5H6 - 2H7|
"movq %%mm7, %%mm6 \n\t" // 0
"psubw %%mm2, %%mm6 \n\t"
"pmaxsw %%mm6, %%mm2 \n\t" // |2L0 - 5L1 + 5L2 - 2L3|
"movq %%mm7, %%mm6 \n\t" // 0
"psubw %%mm3, %%mm6 \n\t"
"pmaxsw %%mm6, %%mm3 \n\t" // |2H0 - 5H1 + 5H2 - 2H3|
#else
"movq %%mm7, %%mm6 \n\t" // 0
"pcmpgtw %%mm0, %%mm6 \n\t"
"pxor %%mm6, %%mm0 \n\t"
"psubw %%mm6, %%mm0 \n\t" // |2L4 - 5L5 + 5L6 - 2L7|
"movq %%mm7, %%mm6 \n\t" // 0
"pcmpgtw %%mm1, %%mm6 \n\t"
"pxor %%mm6, %%mm1 \n\t"
"psubw %%mm6, %%mm1 \n\t" // |2H4 - 5H5 + 5H6 - 2H7|
"movq %%mm7, %%mm6 \n\t" // 0
"pcmpgtw %%mm2, %%mm6 \n\t"
"pxor %%mm6, %%mm2 \n\t"
"psubw %%mm6, %%mm2 \n\t" // |2L0 - 5L1 + 5L2 - 2L3|
"movq %%mm7, %%mm6 \n\t" // 0
"pcmpgtw %%mm3, %%mm6 \n\t"
"pxor %%mm6, %%mm3 \n\t"
"psubw %%mm6, %%mm3 \n\t" // |2H0 - 5H1 + 5H2 - 2H3|
#endif
#if HAVE_MMX2
"pminsw %%mm2, %%mm0 \n\t"
"pminsw %%mm3, %%mm1 \n\t"
#else
"movq %%mm0, %%mm6 \n\t"
"psubusw %%mm2, %%mm6 \n\t"
"psubw %%mm6, %%mm0 \n\t"
"movq %%mm1, %%mm6 \n\t"
"psubusw %%mm3, %%mm6 \n\t"
"psubw %%mm6, %%mm1 \n\t"
#endif
"movd %2, %%mm2 \n\t" // QP
"punpcklbw %%mm7, %%mm2 \n\t"
"movq %%mm7, %%mm6 \n\t" // 0
"pcmpgtw %%mm4, %%mm6 \n\t" // sign(2L2 - 5L3 + 5L4 - 2L5)
"pxor %%mm6, %%mm4 \n\t"
"psubw %%mm6, %%mm4 \n\t" // |2L2 - 5L3 + 5L4 - 2L5|
"pcmpgtw %%mm5, %%mm7 \n\t" // sign(2H2 - 5H3 + 5H4 - 2H5)
"pxor %%mm7, %%mm5 \n\t"
"psubw %%mm7, %%mm5 \n\t" // |2H2 - 5H3 + 5H4 - 2H5|
// 100 opcodes
"psllw $3, %%mm2 \n\t" // 8QP
"movq %%mm2, %%mm3 \n\t" // 8QP
"pcmpgtw %%mm4, %%mm2 \n\t"
"pcmpgtw %%mm5, %%mm3 \n\t"
"pand %%mm2, %%mm4 \n\t"
"pand %%mm3, %%mm5 \n\t"
"psubusw %%mm0, %%mm4 \n\t" // hd
"psubusw %%mm1, %%mm5 \n\t" // ld
"movq "MANGLE(w05)", %%mm2 \n\t" // 5
"pmullw %%mm2, %%mm4 \n\t"
"pmullw %%mm2, %%mm5 \n\t"
"movq "MANGLE(w20)", %%mm2 \n\t" // 32
"paddw %%mm2, %%mm4 \n\t"
"paddw %%mm2, %%mm5 \n\t"
"psrlw $6, %%mm4 \n\t"
"psrlw $6, %%mm5 \n\t"
"movq 16(%%"REG_c"), %%mm0 \n\t" // L3 - L4
"movq 24(%%"REG_c"), %%mm1 \n\t" // H3 - H4
"pxor %%mm2, %%mm2 \n\t"
"pxor %%mm3, %%mm3 \n\t"
"pcmpgtw %%mm0, %%mm2 \n\t" // sign (L3-L4)
"pcmpgtw %%mm1, %%mm3 \n\t" // sign (H3-H4)
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t" // |L3-L4|
"psubw %%mm3, %%mm1 \n\t" // |H3-H4|
"psrlw $1, %%mm0 \n\t" // |L3 - L4|/2
"psrlw $1, %%mm1 \n\t" // |H3 - H4|/2
"pxor %%mm6, %%mm2 \n\t"
"pxor %%mm7, %%mm3 \n\t"
"pand %%mm2, %%mm4 \n\t"
"pand %%mm3, %%mm5 \n\t"
#if HAVE_MMX2
"pminsw %%mm0, %%mm4 \n\t"
"pminsw %%mm1, %%mm5 \n\t"
#else
"movq %%mm4, %%mm2 \n\t"
"psubusw %%mm0, %%mm2 \n\t"
"psubw %%mm2, %%mm4 \n\t"
"movq %%mm5, %%mm2 \n\t"
"psubusw %%mm1, %%mm2 \n\t"
"psubw %%mm2, %%mm5 \n\t"
#endif
"pxor %%mm6, %%mm4 \n\t"
"pxor %%mm7, %%mm5 \n\t"
"psubw %%mm6, %%mm4 \n\t"
"psubw %%mm7, %%mm5 \n\t"
"packsswb %%mm5, %%mm4 \n\t"
"movq (%0), %%mm0 \n\t"
"paddb %%mm4, %%mm0 \n\t"
"movq %%mm0, (%0) \n\t"
"movq (%0, %1), %%mm0 \n\t"
"psubb %%mm4, %%mm0 \n\t"
"movq %%mm0, (%0, %1) \n\t"
: "+r" (src)
: "r" ((x86_reg)stride), "m" (c->pQPb)
: "%"REG_a, "%"REG_c
);