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688a56e8ab
for arq in `git ls-files *.c`; do
echo $arq;
indent -linux -l115 $arq;
done
The different line break at 115 columns is because
I use a widescreen monitor :-)
512 lines
23 KiB
C
512 lines
23 KiB
C
/* x86_convert.c - convert RImage to XImage with x86 optimizations
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*
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* Raster graphics library
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*
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* Copyright (c) 2000-2003 Alfredo K. Kojima
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <config.h>
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#ifdef ASM_X86
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#ifdef ASM_X86_MMX
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int x86_check_mmx()
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{
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static int result = -1;
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if (result >= 0)
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return result;
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result = 0;
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asm volatile
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("pushal \n\t" // please dont forget this in any asm
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"pushfl \n\t" // check whether cpuid supported
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"pop %%eax \n\t" "movl %%eax, %%ebx \n\t" "xorl $(1<<21), %%eax \n\t" "pushl %%eax \n\t" "popfl \n\t" "pushfl \n\t" "popl %%eax \n\t" "xorl %%ebx, %%eax \n\t" "andl $(1<<21), %%eax \n\t" "jz .NotPentium \n\t" "xorl %%eax, %%eax \n\t" // no eax effect because of the movl below
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// except reseting flags. is it needed?
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"movl $1, %%eax \n\t" "cpuid \n\t" "test $(1<<23), %%edx \n\t" "jz .NotMMX \n\t" "popal \n\t" // popal needed because the address of
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"movl $1, %0 \n\t" // variable %0 may be kept in a register
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"jmp .noPop \n"
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".NotMMX: \n"
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".NotPentium: \n\t"
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"popal \n" ".noPop: \n\t":"=m" (result));
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return result;
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}
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/*
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* TODO:
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* 32/8 24/8 32/16 24/16 32/24 24/24
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* PPlain YES YES
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* MMX DONE
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*
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*
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* - try to align stack (local variable space) into quadword boundary
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*/
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void
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x86_mmx_TrueColor_32_to_16(unsigned char *image,
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unsigned short *ximage,
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short *err,
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short *nerr,
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unsigned short *rtable,
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unsigned short *gtable,
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unsigned short *btable,
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int dr,
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int dg,
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int db,
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unsigned int roffs,
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unsigned int goffs, unsigned int boffs, int width, int height, int line_offset)
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{
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union {
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long long rrggbbaa;
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struct {
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short int rr, gg, bb, aa;
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} words;
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} rrggbbaa;
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union {
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long long pixel;
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struct {
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short int rr, gg, bb, aa;
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} words;
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} pixel;
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short *tmp_err;
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short *tmp_nerr;
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int x;
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asm volatile
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("pushl %%ebx \n\t"
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// pack dr, dg and db into mm6
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"movl %7, %%eax \n\t" "movl %8, %%ebx \n\t" "movl %9, %%ecx \n\t" "movw %%ax, %16 \n\t" "movw %%bx, %17 \n\t" "movw %%cx, %18 \n\t" "movw $0, %19 \n\t" "movq %16, %%mm6 \n\t" // dr dg db 0
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// pack 4|4|4|4 into mm7, for shifting (/16)
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"movl $0x00040004, %16 \n\t"
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"movl $0x00040004, %18 \n\t" "movq %16, %%mm7 \n\t"
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// store constant values for using with mmx when dithering
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"movl $0x00070007, %16 \n\t"
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"movl $0x00070007, %18 \n\t"
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"movq %16, %%mm5 \n\t"
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"movl $0x00050005, %16 \n\t"
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"movl $0x00050005, %18 \n\t"
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"movq %16, %%mm4 \n\t"
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"movl $0x00030003, %16 \n\t"
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"movl $0x00030003, %18 \n\t" "movq %16, %%mm3 \n\t"
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// process 1 pixel / cycle, each component treated as 16bit
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"movl %0, %%esi \n" // esi = image->data
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".LoopYa: \n\t" "movl %13, %%eax \n\t" "movl %%eax, %26 \n\t" // x = width
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"movl %14, %%eax \n\t" "decl %%eax \n\t" // y--
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"movl %%eax, %14 \n\t" "js .Enda \n\t" // if y < 0, goto end
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"andl $1, %%eax \n\t" "jz .LoopY_1a \n" // if (y&1) goto LoopY_1
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".LoopY_0a: \n\t" "movl %2, %%ebx \n\t" // ebx = err
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"movl %%ebx, %25 \n\t" // [-36] = err
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"movl %3, %%eax \n\t" //
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"movl %%eax, %24 \n\t" // [-32] = nerr
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"jmp .LoopXa \n" ".LoopY_1a: \n\t" "movl %3, %%ebx \n\t" // ebx = nerr
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"movl %%ebx, %25 \n\t" // [-36] = nerr
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"movl %2, %%eax \n\t" //
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"movl %%eax, %24 \n\t" // [-32] = eerr
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".align 16 \n" ".LoopXa: \n\t"
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// calculate errors and pixel components
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// depend on ebx, esi, mm6
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"movq (%%ebx), %%mm1 \n\t" // mm1 = error[0..3]
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"punpcklbw (%%esi), %%mm0 \n\t" // mm0 = image->data[0..3]
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"psrlw $8, %%mm0 \n\t" // fixup mm0
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"paddusb %%mm1, %%mm0 \n\t" // mm0 = mm0 + mm1 (sat. to 255)
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"movq %%mm0, %20 \n\t" // save the pixel
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"movzwl %20, %%ecx \n\t" // ecx = pixel.red
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"movl %4, %%edi \n\t" // edi = rtable
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//agi
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"leal (%%edi, %%ecx, 2), %%eax \n\t" // eax = &rtable[pixel.red]
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// agi
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"movw (%%eax), %%dx \n\t" // dx = rtable[pixel.red]
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"movw %%dx, %16 \n\t" // save rr
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"movzwl %21, %%ecx \n\t" // ecx = pixel.green
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"movl %5, %%edi \n\t" // edi = gtable
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//agi
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"leal (%%edi, %%ecx, 2), %%eax \n\t" // eax = >able[pixel.green]
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//agi
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"movw (%%eax), %%dx \n\t" // dx = gtable[pixel.green]
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"movw %%dx, %17 \n\t" // save gg
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"movzwl %22, %%ecx \n\t" // ecx = pixel.blue
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"movl %6, %%edi \n\t" // ebx = btable
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//agi
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"leal (%%edi, %%ecx, 2), %%eax \n\t" // eax = &btable[pixel.blue]
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//agi
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"movw (%%eax), %%dx \n\t" // dx = btable[pixel.blue]
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"movw %%dx, %18 \n\t" // save bb
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"movw $0, %19 \n\t" // save dummy aa
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"movq %16, %%mm1 \n\t" // load mm1 with rrggbbaa
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"pmullw %%mm6, %%mm1 \n\t" // mm1 = rr*dr|...
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"psubsw %%mm1, %%mm0 \n\t" // error = pixel - mm1
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// distribute the error
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// depend on mm0, mm7, mm3, mm4, mm5
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"movl %25, %%ebx \n\t" "movq %%mm0, %%mm1 \n\t" "pmullw %%mm5, %%mm1 \n\t" // mm1 = mm1*7
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"psrlw %%mm7, %%mm1 \n\t" // mm1 = mm1/16
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"paddw 8(%%ebx), %%mm1 \n\t" "movq %%mm1, 8(%%ebx) \n\t" // err[x+1,y] = rer*7/16
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"movl %24, %%ebx \n\t" "movq %%mm0, %%mm1 \n\t" "pmullw %%mm4, %%mm1 \n\t" // mm1 = mm1*5
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"psrlw %%mm7, %%mm1 \n\t" // mm1 = mm1/16
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"paddw -8(%%ebx), %%mm1 \n\t" "movq %%mm1, -8(%%ebx) \n\t" // err[x-1,y+1] += rer*3/16
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"movq %%mm0, %%mm1 \n\t" "pmullw %%mm3, %%mm1 \n\t" // mm1 = mm1*3
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"psrlw %%mm7, %%mm1 \n\t" // mm1 = mm1/16
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"paddw 8(%%ebx), %%mm1 \n\t" "movq %%mm1, (%%ebx) \n\t" // err[x,y+1] += rer*5/16
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"psrlw %%mm7, %%mm0 \n\t" // mm0 = mm0/16
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"movq %%mm0, 8(%%ebx) \n\t" // err[x+1,y+1] = rer/16
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// calculate final pixel value and store
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"movl %10, %%ecx \n\t" "movw %16, %%ax \n\t" "shlw %%cl, %%ax \n\t" //NP* ax = r<<roffs
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"movl %11, %%ecx \n\t" "movw %17, %%bx \n\t" "shlw %%cl, %%bx \n\t" //NP*
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"orw %%bx, %%ax \n\t" "movl %12, %%ecx \n\t" "movw %18, %%bx \n\t" "shlw %%cl, %%bx \n\t" //NP*
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"orw %%bx, %%ax \n\t" "movl %1, %%edx \n\t" "movw %%ax, (%%edx) \n\t" "addl $2, %%edx \n\t" // increment ximage
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"movl %%edx, %1 \n\t"
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// prepare for next iteration on X
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"addl $8, %24 \n\t" // nerr += 8
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"movl %25, %%ebx \n\t" "addl $8, %%ebx \n\t" "movl %%ebx, %25 \n\t" // ebx = err += 8
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// Note: in the last pixel, this would cause an invalid memory access
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// because, punpcklbw is used (which reads 8 bytes) and the last
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// pixel is only 4 bytes. This is no problem because the image data
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// was allocated with extra 4 bytes when created.
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"addl $4, %%esi \n\t" // image->data += 4
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"decl %26 \n\t" // x--
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"jnz .LoopXa \n\t" // if x>0, goto .LoopX
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// depend on edx
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"addl %15, %%edx \n\t" // add extra offset to ximage
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"movl %%edx, %1 \n\t" "jmp .LoopYa \n" ".Enda: \n\t" // THE END
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"emms \n\t" "popl %%ebx \n\t":: "m" (image), // %0
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"m"(ximage), // %1
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"m"(err), // %2
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"m"(nerr), // %3
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"m"(rtable), // %4
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"m"(gtable), // %5
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"m"(btable), // %6
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"m"(dr), // %7
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"m"(dg), // %8
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"m"(db), // %9
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"m"(roffs), // %10
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"m"(goffs), // %11
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"m"(boffs), // %12
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"m"(width), // %13
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"m"(height), // %14
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"m"(line_offset), // %15
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"m"(rrggbbaa.words.rr), // %16 (access to rr)
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"m"(rrggbbaa.words.gg), // %17 (access to gg)
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"m"(rrggbbaa.words.bb), // %18 (access to bb)
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"m"(rrggbbaa.words.aa), // %19 (access to aa)
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"m"(pixel.words.rr), // %20 (access to pixel.r)
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"m"(pixel.words.gg), // %21 (access to pixel.g)
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"m"(pixel.words.bb), // %22 (access to pixel.b)
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"m"(pixel.words.aa), // %23 (access to pixel.a)
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"m"(tmp_err), // %24
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"m"(tmp_nerr), // %25
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"m"(x) // %26
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:"eax", "ecx", "edx", "esi", "edi");
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}
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void
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x86_mmx_TrueColor_24_to_16(unsigned char *image,
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unsigned short *ximage,
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short *err,
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short *nerr,
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short *rtable,
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short *gtable,
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short *btable,
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int dr,
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int dg,
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int db,
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unsigned int roffs,
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unsigned int goffs, unsigned int boffs, int width, int height, int line_offset)
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{
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union {
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long long rrggbbaa;
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struct {
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short int rr, gg, bb, aa;
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} words;
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} rrggbbaa;
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union {
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long long pixel;
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struct {
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short int rr, gg, bb, aa;
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} words;
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} pixel;
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short *tmp_err;
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short *tmp_nerr;
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int x;
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int w1;
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int w2;
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asm volatile
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("pushl %%ebx \n\t" "movl %13, %%eax \n\t" // eax = width
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"movl %%eax, %%ebx \n\t" "shrl $2, %%eax \n\t" "movl %%eax, %27 \n\t" // w1 = width / 4
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"andl $3, %%ebx \n\t" "movl %%ebx, %28 \n" // w2 = width %% 4
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".LoopYc: \n\t" "movl %13, %%eax \n\t" "movl %%eax, %26 \n\t" // x = width
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"decl %14 \n\t" // height--
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"js .Endc \n\t" // if height < 0 then end
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"movl %14, %%eax \n\t" "decl %%eax \n\t" // y--
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"movl %%eax, %14 \n\t" "js .Endc \n\t" // if y < 0, goto end
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"andl $1, %%eax \n\t" "jz .LoopY_1c \n" // if (y&1) goto LoopY_1
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".LoopY_0c: \n\t" "movl %2, %%ebx \n\t" // ebx = err
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"movl %%ebx, %25 \n\t" // [-36] = err
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"movl %3, %%eax \n\t" //
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"movl %%eax, %24 \n\t" // [-32] = nerr
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"jmp .LoopX_1c \n" ".LoopY_1c: \n\t" "movl %3, %%ebx \n\t" // ebx = nerr
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"movl %%ebx, %25 \n\t" // [-36] = nerr
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"movl %2, %%eax \n\t" //
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"movl %%eax, %24 \n\t" // [-32] = eerr
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".align 16 \n\t" "movl %%eax, %26 \n" // x = w1
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".LoopX_1c: \n\t" "decl %26 \n\t" // x--
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"js .Xend1_c \n\t" // if x < 0 then end
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// do conversion of 4 pixels
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"movq %2, %%mm0 \n\t" // mm0 = err
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"jmp .LoopX_1c \n" ".Xend1_c: \n\t" "movl %28, %%eax \n\t" "movl %%eax, %26 \n" // x = w2
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".LoopX_2c: \n\t" "decl %26 \n\t" // x--
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"js .Xend2_c \n\t" //
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// do conversion
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"jmp .LoopX_2c \n" ".Xend2_c: \n\t" "movl %27, %%eax \n\t" "jmp .LoopYc \n" ".Endc: \n\t" // THE END
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"emms \n\t" "popl %%ebx \n\t":: "m" (image), // %0
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"m"(ximage), // %1
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"m"(err), // %2
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"m"(nerr), // %3
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"m"(rtable), // %4
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"m"(gtable), // %5
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"m"(btable), // %6
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"m"(dr), // %7
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"m"(dg), // %8
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"m"(db), // %9
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"m"(roffs), // %10
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"m"(goffs), // %11
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"m"(boffs), // %12
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"m"(width), // %13
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"m"(height), // %14
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"m"(line_offset), // %15
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"m"(rrggbbaa.words.rr), // %16 (access to rr)
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"m"(rrggbbaa.words.gg), // %17 (access to gg)
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"m"(rrggbbaa.words.bb), // %18 (access to bb)
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"m"(rrggbbaa.words.aa), // %19 (access to aa)
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"m"(pixel.words.rr), // %20 (access to pixel.r)
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"m"(pixel.words.gg), // %21 (access to pixel.g)
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"m"(pixel.words.bb), // %22 (access to pixel.b)
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"m"(pixel.words.aa), // %23 (access to pixel.a)
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"m"(tmp_err), // %24
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"m"(tmp_nerr), // %25
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"m"(x), // %26
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"m"(w1), // %27
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"m"(w2) // %28
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:"eax", "ecx", "edx", "esi", "edi");
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}
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#endif /* ASM_X86_MMX */
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void
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x86_PseudoColor_32_to_8(unsigned char *image,
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unsigned char *ximage,
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char *err,
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char *nerr,
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short *ctable,
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int dr,
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int dg,
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int db,
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unsigned long *pixels, int cpc, int width, int height, int bytesPerPixel, int line_offset)
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{
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int x;
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int cpcpc;
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int rr;
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int gg;
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int bb;
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char *tmp_err;
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char *tmp_nerr;
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char ndr; // aparently not used
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char ndg; // aparently not used
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char ndb; // aparently not used
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asm volatile
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("pushal \n\t" "movl %9, %%eax \n\t" "mulb %9 \n\t" "movl %%eax, %15 \n\t" // cpcpc = cpc*cpc
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// eax will always be <= 0xffff
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// process 1 pixel / cycle, each component treated as 16bit
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"movl %0, %%esi \n" // esi = image->data
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".LoopYb: \n\t" "movl %10, %%ecx \n\t" "movl %%ecx, %14 \n\t" // x = width
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"movl %11, %%ecx \n\t" "decl %%ecx \n\t" // y--
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"movl %%ecx, %11 \n\t" "js .Endb \n\t" // if y < 0, goto end
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"andl $1, %%ecx \n\t" "jz .LoopY_1b \n" // if (y&1) goto LoopY_1
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".LoopY_0b: \n\t" "movl %2, %%ebx \n\t" // ebx = err
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//useless "movl %%ebx, %20 \n\t" // [-36] = err
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"movl %3, %%ecx \n\t" //
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"movl %%ecx, %19 \n\t" // [-32] = nerr
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"movl $0, (%%ecx) \n\t" // init error of nerr[0] to 0
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"jmp .LoopXb \n" ".LoopY_1b: \n\t" "movl %3, %%ebx \n\t" // ebx = nerr
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//useless "movl %%ebx, %20 \n\t" // [-36] = nerr
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"movl %2, %%ecx \n\t" //
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"movl %%ecx, %19 \n\t" // [-32] = err
|
|
"movl $0, (%%ecx) \n\t" // init error of nerr[0] to 0
|
|
".align 16 \n" ".LoopXb: \n\t" "movl %4, %%edi \n\t" // edi = ctable
|
|
"xorl %%edx, %%edx \n\t" // zero the upper word on edx
|
|
// RED
|
|
// depends on ebx==err, esi==image->data, edi
|
|
"movzbw (%%esi), %%dx \n\t" // dx = image->data[0]
|
|
"movsbw (%%ebx), %%ax \n\t" // ax = error[0]
|
|
"addw %%ax, %%dx \n\t" // pixel.red = data[0] + error[0]
|
|
"testb %%dh, %%dh \n\t" // test if pixel.red < 0 or > 255
|
|
"jz .OKRb \n\t" // 0 <= pixel.red <= 255
|
|
"js .NEGRb \n\t" // pixel.red < 0
|
|
"movw $0xff, %%dx \n\t" // pixel.red > 255
|
|
"jmp .OKRb \n"
|
|
".NEGRb: \n\t"
|
|
"xorw %%dx, %%dx \n" ".OKRb: \n\t"
|
|
//partial reg
|
|
"leal (%%edi, %%edx, 2), %%ecx \n\t" // ecx = &ctable[pixel.red]
|
|
//agi
|
|
"movl (%%ecx), %%eax \n\t" // ax = ctable[pixel.red]
|
|
"movw %%ax, %16 \n\t" // save rr
|
|
"mulb %5 \n\t" // ax = rr*dr
|
|
"subw %%ax, %%dx \n\t" // rer = dx = dx - rr*dr
|
|
"movswl %%dx, %%eax \n\t" // save rer
|
|
// distribute error
|
|
"leal (, %%eax, 8), %%ecx \n\t" "subw %%dx, %%cx \n\t" // cx = rer * 7
|
|
"sarw $4, %%cx \n\t" // cx = rer * 7 / 16
|
|
"addb %%cl, 4(%%ebx) \n\t" // err[x+1] += rer * 7 / 16
|
|
"movl %19, %%ecx \n\t" // ecx = nerr
|
|
"leaw (%%eax, %%eax, 4), %%dx \n\t" // dx = rer * 5
|
|
"sarw $4, %%dx \n\t" // dx = rer * 5 / 16
|
|
"addb %%dl, (%%ecx) \n\t" // nerr[x] += rer * 5 / 16
|
|
"leaw (%%eax, %%eax, 2), %%dx \n\t" // dx = rer * 3
|
|
"sarw $4, %%dx \n\t" // dx = rer * 3 / 16
|
|
"addb %%dl, -4(%%ecx) \n\t" // nerr[x-1] += rer * 3 / 16
|
|
"sarw $4, %%ax \n\t" // ax = rer / 16
|
|
"movb %%al, 4(%%ecx) \n\t" // nerr[x+1] = rer / 16
|
|
// GREEN
|
|
// depends on ebx, esi, edi
|
|
"movzbw 1(%%esi), %%dx \n\t" // dx = image->data[1]
|
|
"movsbw 1(%%ebx), %%ax \n\t" // ax = error[1]
|
|
"addw %%ax, %%dx \n\t" // pixel.grn = data[1] + error[1]
|
|
"testb %%dh, %%dh \n\t" // test if pixel.grn < 0 or > 255
|
|
"jz .OKGb \n\t" // 0 <= pixel.grn <= 255
|
|
"js .NEGGb \n\t" // pixel.grn < 0
|
|
"movw $0xff, %%dx \n\t" // pixel.grn > 255
|
|
"jmp .OKGb \n"
|
|
".NEGGb: \n\t"
|
|
"xorw %%dx, %%dx \n" ".OKGb: \n\t"
|
|
// partial reg
|
|
"leal (%%edi, %%edx, 2), %%ecx \n\t" // ecx = &ctable[pixel.grn]
|
|
//agi
|
|
"movw (%%ecx), %%ax \n\t" // ax = ctable[pixel.grn]
|
|
"movw %%ax, %17 \n\t" // save gg
|
|
"mulb %6 \n\t" // ax = gg*dg
|
|
"subw %%ax, %%dx \n\t" // ger = dx = dx - gg*dg
|
|
"movswl %%dx, %%eax \n\t" // save ger
|
|
// distribute error
|
|
"leal (, %%eax, 8), %%ecx \n\t" "subw %%dx, %%cx \n\t" // cx = ger * 7
|
|
"sarw $4, %%cx \n\t" // cx = ger * 7 / 16
|
|
"addb %%cl, 5(%%ebx) \n\t" // err[x+1] += ger * 7 / 16
|
|
"movl %19, %%ecx \n\t" // ecx = nerr
|
|
"leaw (%%eax, %%eax, 4), %%dx \n\t" // dx = ger * 5
|
|
"sarw $4, %%dx \n\t" // dx = ger * 5 / 16
|
|
"addb %%dl, 1(%%ecx) \n\t" // nerr[x] += ger * 5 / 16
|
|
"leaw (%%eax, %%eax, 2), %%dx \n\t" // dx = ger * 3
|
|
"sarw $4, %%dx \n\t" // dx = ger * 3 / 16
|
|
"addb %%dl, -3(%%ecx) \n\t" // nerr[x-1] += ger * 3 / 16
|
|
"sarw $4, %%ax \n\t" // ax = ger / 16
|
|
"movb %%al, 5(%%ecx) \n\t" // nerr[x+1] = ger / 16
|
|
// BLUE
|
|
// depends on ebx, esi
|
|
"movzbw 2(%%esi), %%dx \n\t" // dx = image->data[2]
|
|
"movsbw 2(%%ebx), %%ax \n\t" // ax = error[2]
|
|
"addw %%ax, %%dx \n\t" // pixel.grn = data[2] + error[2]
|
|
"testb %%dh, %%dh \n\t" // test if pixel.blu < 0 or > 255
|
|
"jz .OKBb \n\t" // 0 <= pixel.blu <= 255
|
|
"js .NEGBb \n\t" // pixel.blu < 0
|
|
"movw $0xff, %%dx \n\t" // pixel.blu > 255
|
|
"jmp .OKBb \n"
|
|
".NEGBb: \n\t"
|
|
"xorw %%dx, %%dx \n" ".OKBb: \n\t"
|
|
//partial reg
|
|
"leal (%%edi, %%edx, 2), %%ecx \n\t" // ecx = &ctable[pixel.blu]
|
|
//agi
|
|
"movw (%%ecx), %%ax \n\t" // ax = ctable[pixel.blu]
|
|
"movw %%ax, %18 \n\t" // save bb
|
|
"mulb %7 \n\t" // ax = bb*db
|
|
"subw %%ax, %%dx \n\t" // ber = dx = dx - bb*db
|
|
"movswl %%dx, %%eax \n\t" // save ber
|
|
// distribute error
|
|
"leal (, %%eax, 8), %%ecx \n\t" "subw %%dx, %%cx \n\t" // cx = ber * 7
|
|
"sarw $4, %%cx \n\t" // cx = ber * 7 / 16
|
|
"addb %%cl, 6(%%ebx) \n\t" // err[x+1] += ber * 7 / 16
|
|
"movl %19, %%ecx \n\t" // ecx = nerr
|
|
"leaw (%%eax, %%eax, 4), %%dx \n\t" // dx = ber * 5
|
|
"sarw $4, %%dx \n\t" // dx = ber * 5 / 16
|
|
"addb %%dl, 2(%%ecx) \n\t" // nerr[x] += ber * 5 / 16
|
|
"leaw (%%eax, %%eax, 2), %%dx \n\t" // dx = ber * 3
|
|
"sarw $4, %%dx \n\t" // dx = ber * 3 / 16
|
|
"addb %%dl, -4(%%ecx) \n\t" // nerr[x-1] += ber * 3 / 16
|
|
"sarw $4, %%ax \n\t" // ax = ber / 16
|
|
"movb %%al, 6(%%ecx) \n\t" // nerr[x+1] = ber / 16
|
|
"andl $0xffff, %%eax \n\t"
|
|
// depends on eax & 0xffff0000 == 0
|
|
// calculate the index of the value of the pixel
|
|
"movw %16, %%ax \n\t" // ax = rr
|
|
"mulb %15 \n\t" // ax = cpcpc*rr
|
|
"movw %%ax, %%cx \n\t" "movw %17, %%ax \n\t" // ax = gg
|
|
"mulb %9 \n\t" // ax = cpc*gg
|
|
"addw %%cx, %%ax \n\t" // ax = cpc*gg + cpcpc*rr
|
|
"addw %18, %%ax \n\t" // ax = cpcpc*rr + cpc*gg + bb
|
|
"movl %8, %%ecx \n\t"
|
|
//agi
|
|
"leal (%%ecx, %%eax, 4), %%edx \n\t"
|
|
//agi
|
|
"movb (%%edx), %%cl \n\t" // cl = pixels[ax]
|
|
// store the pixel
|
|
"movl %1, %%eax \n\t" "movb %%cl, (%%eax) \n\t" // *ximage = cl
|
|
"incl %1 \n\t" // ximage++
|
|
// prepare for next iteration on X
|
|
"addl $4, %19 \n\t" // nerr += 4
|
|
"addl $4, %%ebx \n\t" // err += 4
|
|
"addl %12, %%esi \n\t" // image->data += bpp
|
|
"decl %14 \n\t" // x--
|
|
"jnz .LoopXb \n\t" // if x>0, goto .LoopX
|
|
"movl %13, %%eax \n\t" "addl %%eax, %1 \n\t" // add extra offset to ximage
|
|
"jmp .LoopYb \n" ".Endb: \n\t" "emms \n\t" "popal \n\t":: "m" (image), // %0
|
|
"m"(ximage), // %1
|
|
"m"(err), // %2
|
|
"m"(nerr), // %3
|
|
"m"(ctable), // %4
|
|
"m"(dr), // %5
|
|
"m"(dg), // %6
|
|
"m"(db), // %7
|
|
"m"(pixels), // %8
|
|
"m"(cpc), // %9
|
|
"m"(width), // %10
|
|
"m"(height), // %11
|
|
"m"(bytesPerPixel), // %12
|
|
"m"(line_offset), // %13
|
|
"m"(x), // %14
|
|
"m"(cpcpc), // %15
|
|
"m"(rr), // %16
|
|
"m"(gg), // %17
|
|
"m"(bb), // %18
|
|
"m"(tmp_err), // %19
|
|
"m"(tmp_nerr), // %20
|
|
"m"(ndr), // %21
|
|
"m"(ndg), // %22
|
|
"m"(ndb) // %23
|
|
);
|
|
}
|
|
|
|
#endif /* ASM_X86 */
|