mirror of
https://github.com/gryf/wmaker.git
synced 2025-12-24 07:02:30 +01:00
9aca0d5f6e
- Fixed bug in icon chooser dialog that could cause a segmentation fault in some cases (Pascal Hofstee <caelian@gmail.com>) - Fixed crash in asm code in wrlib, with new versions of gcc. - Fixed bug in the x86_PseudoColor_32_to_8() function which incorrectly used the r, g, b fields in the conversion. - Fixed x86 ASM code in wrlib to work on 64 bit architectures. - Fixed the focus flicker seen with some apps (notably gtk2) (Alexey Spiridonov <snarkmaster@gmail.com>) - Fixed all crashing bugs that were generated by wmaker starting with the WMState file missing. - Added NetWM support (a modified version of the patch originaly written by Peter Zijlstra <a.p.zijlstra@chello.nl>) - Applied patch to enhance the Virtual Desktop behaviour, and to integrate it with the NetWM code (Peter Zijlstra <a.p.zijlstra@chello.nl>) - Applied a few xinerama and placement fixes (Peter Zijlstra <a.p.zijlstra@chello.nl>) - Fixed memory leak in dock code. - Fixed and enhanced the text wrapping in WINGs. - Fixed the layout of some elements in WPrefs.app - Added workaround for aplications that don't set the required hints on the client leader window, but they set them on normal windows (observer with KDE 3.3.0 mainly). This will allow these apps to get an appicon again. (they should be fixed still) - Added workaround for applications that do not set a command with XSetCommand(), but instead they set the _NET_WM_PID property. This works with operating systems that offer a /proc interface similar to what linux has. (This also is to fix problems with KDE 3.3.0 apps, but not only them). - Fixed bug with autostart and exit scripts not being executed if user GNUstep path was different from ~/GNUstep (when setting GNUSTEP_USER_ROOT) - Added utf8 support in WINGs (removed old X core font code) - Added utility to convert old font names to new font names in style files
759 lines
21 KiB
C
759 lines
21 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
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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"
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"movl %%eax, %%ebx \n\t"
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"xorl $(1<<21), %%eax \n\t"
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"pushl %%eax \n\t"
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"popfl \n\t"
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"pushfl \n\t"
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"popl %%eax \n\t"
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"xorl %%ebx, %%eax \n\t"
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"andl $(1<<21), %%eax \n\t"
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"jz .NotPentium \n\t"
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"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"
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"cpuid \n\t"
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"test $(1<<23), %%edx \n\t"
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"jz .NotMMX \n\t"
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"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"
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".noPop: \n\t"
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: "=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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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,
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unsigned int boffs,
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int width,
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int height,
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int line_offset)
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{
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long long rrggbbaa;
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long long 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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(
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"pushal \n\t"
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// pack dr, dg and db into mm6
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"movl %7, %%eax \n\t"
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"movl %8, %%ebx \n\t"
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"movl %9, %%ecx \n\t"
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"movw %%ax, %16 \n\t"
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"movw %%bx, %17 \n\t"
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"movw %%cx, %18 \n\t"
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"movw $0, %19 \n\t"
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"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"
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"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"
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"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"
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"movl %13, %%eax \n\t"
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"movl %%eax, %26 \n\t" // x = width
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"movl %14, %%eax \n\t"
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"decl %%eax \n\t" // y--
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"movl %%eax, %14 \n\t"
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"js .Enda \n\t" // if y < 0, goto end
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"andl $1, %%eax \n\t"
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"jz .LoopY_1a \n" // if (y&1) goto LoopY_1
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".LoopY_0a: \n\t"
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"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"
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".LoopY_1a: \n\t"
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"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"
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".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"
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"movq %%mm0, %%mm1 \n\t"
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"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"
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"movq %%mm1, 8(%%ebx) \n\t" // err[x+1,y] = rer*7/16
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"movl %24, %%ebx \n\t"
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"movq %%mm0, %%mm1 \n\t"
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"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"
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"movq %%mm1, -8(%%ebx) \n\t" // err[x-1,y+1] += rer*3/16
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"movq %%mm0, %%mm1 \n\t"
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"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"
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"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"
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"movw %16, %%ax \n\t"
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"shlw %%cl, %%ax \n\t" //NP* ax = r<<roffs
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"movl %11, %%ecx \n\t"
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"movw %17, %%bx \n\t"
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"shlw %%cl, %%bx \n\t" //NP*
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"orw %%bx, %%ax \n\t"
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"movl %12, %%ecx \n\t"
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"movw %18, %%bx \n\t"
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"shlw %%cl, %%bx \n\t" //NP*
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"orw %%bx, %%ax \n\t"
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"movl %1, %%edx \n\t"
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"movw %%ax, (%%edx) \n\t"
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"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"
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"addl $8, %%ebx \n\t"
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"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"
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"jmp .LoopYa \n"
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".Enda: \n\t" // THE END
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"emms \n\t"
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"popal \n\t"
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:
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:
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"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), // %16 (access to rr)
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"m" ((*((short*)(&rrggbbaa)+1))), // %17 (access to gg)
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"m" ((*((short*)(&rrggbbaa)+2))), // %18 (access to bb)
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"m" ((*((short*)(&rrggbbaa)+3))), // %19 (access to aa)
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"m" (pixel), // %20 (access to pixel.r)
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"m" ((*((short*)(&pixel)+1))), // %21 (access to pixel.g)
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"m" ((*((short*)(&pixel)+2))), // %22 (access to pixel.b)
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"m" ((*((short*)(&pixel)+3))), // %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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);
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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,
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unsigned int boffs,
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int width,
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int height,
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int line_offset)
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{
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long long rrggbbaa;
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long long 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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(
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"pushal \n\t"
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"movl %13, %%eax \n\t" // eax = width
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"movl %%eax, %%ebx \n\t"
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"shrl $2, %%eax \n\t"
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"movl %%eax, %27 \n\t" // w1 = width / 4
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"andl $3, %%ebx \n\t"
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"movl %%ebx, %28 \n" // w2 = width %% 4
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".LoopYc: \n\t"
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"movl %13, %%eax \n\t"
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"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"
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"decl %%eax \n\t" // y--
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"movl %%eax, %14 \n\t"
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"js .Endc \n\t" // if y < 0, goto end
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"andl $1, %%eax \n\t"
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"jz .LoopY_1c \n" // if (y&1) goto LoopY_1
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".LoopY_0c: \n\t"
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"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"
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".LoopY_1c: \n\t"
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"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"
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"movl %%eax, %26 \n" // x = w1
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".LoopX_1c: \n\t"
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"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"
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".Xend1_c: \n\t"
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"movl %28, %%eax \n\t"
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"movl %%eax, %26 \n" // x = w2
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".LoopX_2c: \n\t"
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"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"
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".Xend2_c: \n\t"
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"movl %27, %%eax \n\t"
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"jmp .LoopYc \n"
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".Endc: \n\t" // THE END
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"emms \n\t"
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"popal \n\t"
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:
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:
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"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
|
|
"m" (roffs), // %10
|
|
"m" (goffs), // %11
|
|
"m" (boffs), // %12
|
|
"m" (width), // %13
|
|
"m" (height), // %14
|
|
"m" (line_offset), // %15
|
|
"m" (rrggbbaa), // %16 (access to rr)
|
|
"m" ((*((short*)(&rrggbbaa)+1))), // %17 (access to gg)
|
|
"m" ((*((short*)(&rrggbbaa)+2))), // %18 (access to bb)
|
|
"m" ((*((short*)(&rrggbbaa)+3))), // %19 (access to aa)
|
|
"m" (pixel), // %20 (access to pixel.r)
|
|
"m" ((*((short*)(&pixel)+1))), // %21 (access to pixel.g)
|
|
"m" ((*((short*)(&pixel)+2))), // %22 (access to pixel.b)
|
|
"m" ((*((short*)(&pixel)+3))), // %23 (access to pixel.a)
|
|
"m" (tmp_err), // %24
|
|
"m" (tmp_nerr), // %25
|
|
"m" (x), // %26
|
|
"m" (w1), // %27
|
|
"m" (w2) // %28
|
|
);
|
|
}
|
|
|
|
|
|
|
|
#endif /* ASM_X86_MMX */
|
|
|
|
|
|
|
|
void
|
|
x86_PseudoColor_32_to_8(unsigned char *image,
|
|
unsigned char *ximage,
|
|
char *err,
|
|
char *nerr,
|
|
short *ctable,
|
|
int dr,
|
|
int dg,
|
|
int db,
|
|
unsigned long *pixels,
|
|
int cpc,
|
|
int width,
|
|
int height,
|
|
int bytesPerPixel,
|
|
int line_offset)
|
|
{
|
|
int x;
|
|
int cpcpc;
|
|
|
|
int rr;
|
|
int gg;
|
|
int bb;
|
|
|
|
char *tmp_err;
|
|
char *tmp_nerr;
|
|
|
|
char ndr; // aparently not used
|
|
char ndg; // aparently not used
|
|
char ndb; // aparently not used
|
|
|
|
asm volatile
|
|
(
|
|
"pushal \n\t"
|
|
|
|
"movl %9, %%eax \n\t"
|
|
"mulb %9 \n\t"
|
|
"movl %%eax, %15 \n\t" // cpcpc = cpc*cpc
|
|
|
|
// eax will always be <= 0xffff
|
|
|
|
// process 1 pixel / cycle, each component treated as 16bit
|
|
"movl %0, %%esi \n" // esi = image->data
|
|
|
|
".LoopYb: \n\t"
|
|
"movl %10, %%ecx \n\t"
|
|
"movl %%ecx, %14 \n\t" // x = width
|
|
|
|
"movl %11, %%ecx \n\t"
|
|
"decl %%ecx \n\t" // y--
|
|
"movl %%ecx, %11 \n\t"
|
|
"js .Endb \n\t" // if y < 0, goto end
|
|
"andl $1, %%ecx \n\t"
|
|
"jz .LoopY_1b \n" // if (y&1) goto LoopY_1
|
|
|
|
".LoopY_0b: \n\t"
|
|
|
|
"movl %2, %%ebx \n\t" // ebx = err
|
|
//useless "movl %%ebx, %20 \n\t" // [-36] = err
|
|
"movl %3, %%ecx \n\t" //
|
|
"movl %%ecx, %19 \n\t" // [-32] = nerr
|
|
|
|
"movl $0, (%%ecx) \n\t" // init error of nerr[0] to 0
|
|
|
|
"jmp .LoopXb \n"
|
|
|
|
".LoopY_1b: \n\t"
|
|
|
|
"movl %3, %%ebx \n\t" // ebx = nerr
|
|
//useless "movl %%ebx, %20 \n\t" // [-36] = nerr
|
|
"movl %2, %%ecx \n\t" //
|
|
"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 */
|
|
|