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Added automated test to Xcode project plus needed changes to SDL_RWFromFile to be OS X bundle aware. The Mac OS X project has a new target called testsdl which builds the automated test. I looked at using Xcode's native unit test support, but the impedance mismatch between the existing automated test structure and Apple's was more than I could handle. As such, the testsdl application is a full blown proper OS X application, which means it is a self-contained .app bundle. This immediately revealed some problems from the automated test. The largest problem was the assumption about the current working directory and where to find resources. (I suspect Windows may have a similar problem depending on circumstance.) To open resources, the test was looking in directories relative to the SDL source directory, but this will not work well with self-contained .app bundles and Xcode which can place its built applications almost anywhere. And for real-world situations, this is pretty useless anyway. So I modified SDL_RWFromFile to do special things on OS X. First, it will look for a file in the .app bundle. If not found, it will fallback and just call fopen as it used to do. I also had to modify the automated test itself because it had a contrieved test which called fopen directly to do read from an existing FILE pointer. In addition, there was a write test. Since a .app bundle is likely going to be read-only, I added a special case for OS X to write to NSTemporaryDirectory. I expect these changes should work for both Mac and iPhone OS (which includes iPad). I will update the iPhone Xcode project next. Finally, FYI, the X11 automated test seems to be failing. Below is my output. Pending breakpoint 4 - "-[NSException raise]" resolved Platform : All tests successful (2) SDL_RWops : All tests successful (5) Rect : All tests successful (1) SDL_Surface : All tests successful (6) Rendering with cocoa driver : All tests successful (3) Assert Failed! Blit output not the same. Test Case 'Renderer x11' Test Suite 'Rendering with x11 driver' Last SDL error '' Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged. Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Rendering with x11 driver : Failed 1 out of 4 testcases! Rendering with dummy driver : All tests successful (3) SDL_Audio : All tests successful (1) Tests run with SDL 1.3.0 revision 1095906 System is running Mac OS X and is little endian
author Eric Wing <ewing . public |-at-| gmail . com>
date Sat, 08 May 2010 00:54:22 -0700
parents f7b03b6838cb
children
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2010 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES

#include "SDL_stdinc.h"

#include "mmx.h"

/* *INDENT-OFF* */

static mmx_t MMX_0080w    = { .ud = {0x00800080, 0x00800080} };
static mmx_t MMX_00FFw    = { .ud = {0x00ff00ff, 0x00ff00ff} };
static mmx_t MMX_FF00w    = { .ud = {0xff00ff00, 0xff00ff00} };

static mmx_t MMX_Ycoeff   = { .uw = {0x004a, 0x004a, 0x004a, 0x004a} };

static mmx_t MMX_UbluRGB  = { .uw = {0x0072, 0x0072, 0x0072, 0x0072} };
static mmx_t MMX_VredRGB  = { .uw = {0x0059, 0x0059, 0x0059, 0x0059} };
static mmx_t MMX_UgrnRGB  = { .uw = {0xffea, 0xffea, 0xffea, 0xffea} };
static mmx_t MMX_VgrnRGB  = { .uw = {0xffd2, 0xffd2, 0xffd2, 0xffd2} };

static mmx_t MMX_Ublu5x5  = { .uw = {0x0081, 0x0081, 0x0081, 0x0081} };
static mmx_t MMX_Vred5x5  = { .uw = {0x0066, 0x0066, 0x0066, 0x0066} };
static mmx_t MMX_Ugrn565  = { .uw = {0xffe8, 0xffe8, 0xffe8, 0xffe8} };
static mmx_t MMX_Vgrn565  = { .uw = {0xffcd, 0xffcd, 0xffcd, 0xffcd} };

static mmx_t MMX_red565   = { .uw = {0xf800, 0xf800, 0xf800, 0xf800} };
static mmx_t MMX_grn565   = { .uw = {0x07e0, 0x07e0, 0x07e0, 0x07e0} };

/**
   This MMX assembler is my first assembler/MMX program ever.
   Thus it maybe buggy.
   Send patches to:
   mvogt@rhrk.uni-kl.de

   After it worked fine I have "obfuscated" the code a bit to have
   more parallism in the MMX units. This means I moved
   initilisation around and delayed other instruction.
   Performance measurement did not show that this brought any advantage
   but in theory it _should_ be faster this way.

   The overall performanve gain to the C based dither was 30%-40%.
   The MMX routine calculates 256bit=8RGB values in each cycle
   (4 for row1 & 4 for row2)

   The red/green/blue.. coefficents are taken from the mpeg_play 
   player. They look nice, but I dont know if you can have
   better values, to avoid integer rounding errors.
   

   IMPORTANT:
   ==========

   It is a requirement that the cr/cb/lum are 8 byte aligned and
   the out are 16byte aligned or you will/may get segfaults

*/

void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
                              unsigned char *lum, unsigned char *cr,
                              unsigned char *cb, unsigned char *out,
                              int rows, int cols, int mod )
{
    Uint32 *row1;
    Uint32 *row2;

    unsigned char* y = lum +cols*rows;    // Pointer to the end
    int x = 0;
    row1 = (Uint32 *)out;                 // 32 bit target
    row2 = (Uint32 *)out+cols+mod;        // start of second row
    mod = (mod+cols+mod)*4;               // increment for row1 in byte

    __asm__ __volatile__ (
        // tap dance to workaround the inability to use %%ebx at will...
        //  move one thing to the stack...
        "pushl $0\n"  // save a slot on the stack.
        "pushl %%ebx\n"  // save %%ebx.
        "movl %0, %%ebx\n"  // put the thing in ebx.
        "movl %%ebx,4(%%esp)\n"  // put the thing in the stack slot.
        "popl %%ebx\n"  // get back %%ebx (the PIC register).

        ".align 8\n"
        "1:\n"

        // create Cr (result in mm1)
        "pushl %%ebx\n"
        "movl 4(%%esp),%%ebx\n"
        "movd (%%ebx),%%mm1\n"   //         0  0  0  0  v3 v2 v1 v0
        "popl %%ebx\n"
        "pxor %%mm7,%%mm7\n"      //         00 00 00 00 00 00 00 00
        "movd (%2), %%mm2\n"           //    0  0  0  0 l3 l2 l1 l0
        "punpcklbw %%mm7,%%mm1\n" //         0  v3 0  v2 00 v1 00 v0
        "punpckldq %%mm1,%%mm1\n" //         00 v1 00 v0 00 v1 00 v0
        "psubw %9,%%mm1\n"        // mm1-128:r1 r1 r0 r0 r1 r1 r0 r0

        // create Cr_g (result in mm0)
        "movq %%mm1,%%mm0\n"           // r1 r1 r0 r0 r1 r1 r0 r0
        "pmullw %10,%%mm0\n"           // red*-46dec=0.7136*64
        "pmullw %11,%%mm1\n"           // red*89dec=1.4013*64
        "psraw  $6, %%mm0\n"           // red=red/64
        "psraw  $6, %%mm1\n"           // red=red/64

        // create L1 L2 (result in mm2,mm4)
        // L2=lum+cols
        "movq (%2,%4),%%mm3\n"         //    0  0  0  0 L3 L2 L1 L0
        "punpckldq %%mm3,%%mm2\n"      //   L3 L2 L1 L0 l3 l2 l1 l0
        "movq %%mm2,%%mm4\n"           //   L3 L2 L1 L0 l3 l2 l1 l0
        "pand %12,%%mm2\n"             //   L3 0  L1  0 l3  0 l1  0
        "pand %13,%%mm4\n"             //   0  L2  0 L0  0 l2  0 l0
        "psrlw $8,%%mm2\n"             //   0  L3  0 L1  0 l3  0 l1

        // create R (result in mm6)
        "movq %%mm2,%%mm5\n"           //   0 L3  0 L1  0 l3  0 l1
        "movq %%mm4,%%mm6\n"           //   0 L2  0 L0  0 l2  0 l0
        "paddsw  %%mm1, %%mm5\n"       // lum1+red:x R3 x R1 x r3 x r1
        "paddsw  %%mm1, %%mm6\n"       // lum1+red:x R2 x R0 x r2 x r0
        "packuswb %%mm5,%%mm5\n"       //  R3 R1 r3 r1 R3 R1 r3 r1
        "packuswb %%mm6,%%mm6\n"       //  R2 R0 r2 r0 R2 R0 r2 r0
        "pxor %%mm7,%%mm7\n"      //         00 00 00 00 00 00 00 00
        "punpcklbw %%mm5,%%mm6\n"      //  R3 R2 R1 R0 r3 r2 r1 r0

        // create Cb (result in mm1)
        "movd (%1), %%mm1\n"      //         0  0  0  0  u3 u2 u1 u0
        "punpcklbw %%mm7,%%mm1\n" //         0  u3 0  u2 00 u1 00 u0
        "punpckldq %%mm1,%%mm1\n" //         00 u1 00 u0 00 u1 00 u0
        "psubw %9,%%mm1\n"        // mm1-128:u1 u1 u0 u0 u1 u1 u0 u0

        // create Cb_g (result in mm5)
        "movq %%mm1,%%mm5\n"            // u1 u1 u0 u0 u1 u1 u0 u0
        "pmullw %14,%%mm5\n"            // blue*-109dec=1.7129*64
        "pmullw %15,%%mm1\n"            // blue*114dec=1.78125*64
        "psraw  $6, %%mm5\n"            // blue=red/64
        "psraw  $6, %%mm1\n"            // blue=blue/64

        // create G (result in mm7)
        "movq %%mm2,%%mm3\n"      //   0  L3  0 L1  0 l3  0 l1
        "movq %%mm4,%%mm7\n"      //   0  L2  0 L0  0 l2  0 l1
        "paddsw  %%mm5, %%mm3\n"  // lum1+Cb_g:x G3t x G1t x g3t x g1t
        "paddsw  %%mm5, %%mm7\n"  // lum1+Cb_g:x G2t x G0t x g2t x g0t
        "paddsw  %%mm0, %%mm3\n"  // lum1+Cr_g:x G3  x G1  x g3  x g1
        "paddsw  %%mm0, %%mm7\n"  // lum1+blue:x G2  x G0  x g2  x g0
        "packuswb %%mm3,%%mm3\n"  // G3 G1 g3 g1 G3 G1 g3 g1
        "packuswb %%mm7,%%mm7\n"  // G2 G0 g2 g0 G2 G0 g2 g0
        "punpcklbw %%mm3,%%mm7\n" // G3 G2 G1 G0 g3 g2 g1 g0

        // create B (result in mm5)
        "movq %%mm2,%%mm3\n"         //   0  L3  0 L1  0 l3  0 l1
        "movq %%mm4,%%mm5\n"         //   0  L2  0 L0  0 l2  0 l1
        "paddsw  %%mm1, %%mm3\n"     // lum1+blue:x B3 x B1 x b3 x b1
        "paddsw  %%mm1, %%mm5\n"     // lum1+blue:x B2 x B0 x b2 x b0
        "packuswb %%mm3,%%mm3\n"     // B3 B1 b3 b1 B3 B1 b3 b1
        "packuswb %%mm5,%%mm5\n"     // B2 B0 b2 b0 B2 B0 b2 b0
        "punpcklbw %%mm3,%%mm5\n"    // B3 B2 B1 B0 b3 b2 b1 b0

        // fill destination row1 (needed are mm6=Rr,mm7=Gg,mm5=Bb)

        "pxor %%mm2,%%mm2\n"           //  0  0  0  0  0  0  0  0
        "pxor %%mm4,%%mm4\n"           //  0  0  0  0  0  0  0  0
        "movq %%mm6,%%mm1\n"           // R3 R2 R1 R0 r3 r2 r1 r0
        "movq %%mm5,%%mm3\n"           // B3 B2 B1 B0 b3 b2 b1 b0

        // process lower lum
        "punpcklbw %%mm4,%%mm1\n"      //  0 r3  0 r2  0 r1  0 r0
        "punpcklbw %%mm4,%%mm3\n"      //  0 b3  0 b2  0 b1  0 b0
        "movq %%mm1,%%mm2\n"           //  0 r3  0 r2  0 r1  0 r0
        "movq %%mm3,%%mm0\n"           //  0 b3  0 b2  0 b1  0 b0
        "punpcklwd %%mm1,%%mm3\n"      //  0 r1  0 b1  0 r0  0 b0
        "punpckhwd %%mm2,%%mm0\n"      //  0 r3  0 b3  0 r2  0 b2

        "pxor %%mm2,%%mm2\n"           //  0  0  0  0  0  0  0  0
        "movq %%mm7,%%mm1\n"           // G3 G2 G1 G0 g3 g2 g1 g0
        "punpcklbw %%mm1,%%mm2\n"      // g3  0 g2  0 g1  0 g0  0
        "punpcklwd %%mm4,%%mm2\n"      //  0  0 g1  0  0  0 g0  0
        "por %%mm3, %%mm2\n"          //  0 r1 g1 b1  0 r0 g0 b0
        "movq %%mm2,(%3)\n"          // wrote out ! row1

        "pxor %%mm2,%%mm2\n"           //  0  0  0  0  0  0  0  0
        "punpcklbw %%mm1,%%mm4\n"      // g3  0 g2  0 g1  0 g0  0
        "punpckhwd %%mm2,%%mm4\n"      //  0  0 g3  0  0  0 g2  0
        "por %%mm0, %%mm4\n"          //  0 r3 g3 b3  0 r2 g2 b2
        "movq %%mm4,8(%3)\n"         // wrote out ! row1

        // fill destination row2 (needed are mm6=Rr,mm7=Gg,mm5=Bb)
        // this can be done "destructive"
        "pxor %%mm2,%%mm2\n"           //  0  0  0  0  0  0  0  0
        "punpckhbw %%mm2,%%mm6\n"      //  0 R3  0 R2  0 R1  0 R0
        "punpckhbw %%mm1,%%mm5\n"      // G3 B3 G2 B2 G1 B1 G0 B0
        "movq %%mm5,%%mm1\n"           // G3 B3 G2 B2 G1 B1 G0 B0
        "punpcklwd %%mm6,%%mm1\n"      //  0 R1 G1 B1  0 R0 G0 B0
        "movq %%mm1,(%5)\n"          // wrote out ! row2
        "punpckhwd %%mm6,%%mm5\n"      //  0 R3 G3 B3  0 R2 G2 B2
        "movq %%mm5,8(%5)\n"         // wrote out ! row2

        "addl $4,%2\n"            // lum+4
        "leal 16(%3),%3\n"        // row1+16
        "leal 16(%5),%5\n"        // row2+16
        "addl $2,(%%esp)\n"        // cr+2
        "addl $2,%1\n"           // cb+2

        "addl $4,%6\n"            // x+4
        "cmpl %4,%6\n"

        "jl 1b\n"
        "addl %4,%2\n" // lum += cols
        "addl %8,%3\n" // row1+= mod
        "addl %8,%5\n" // row2+= mod
        "movl $0,%6\n" // x=0
        "cmpl %7,%2\n"
        "jl 1b\n"

        "addl $4,%%esp\n"  // get rid of the stack slot we reserved.
        "emms\n"  // reset MMX registers.
        :
        : "m" (cr), "r"(cb),"r"(lum),
          "r"(row1),"r"(cols),"r"(row2),"m"(x),"m"(y),"m"(mod),
          "m"(MMX_0080w),"m"(MMX_VgrnRGB),"m"(MMX_VredRGB),
          "m"(MMX_FF00w),"m"(MMX_00FFw),"m"(MMX_UgrnRGB),
          "m"(MMX_UbluRGB)
    );
}

void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
                             unsigned char *lum, unsigned char *cr,
                             unsigned char *cb, unsigned char *out,
                             int rows, int cols, int mod )
{
    Uint16 *row1;
    Uint16 *row2;

    unsigned char* y = lum +cols*rows;    /* Pointer to the end */
    int x = 0;
    row1 = (Uint16 *)out;                 /* 16 bit target */
    row2 = (Uint16 *)out+cols+mod;        /* start of second row  */
    mod = (mod+cols+mod)*2;               /* increment for row1 in byte */

    __asm__ __volatile__(
        // tap dance to workaround the inability to use %%ebx at will...
        //  move one thing to the stack...
        "pushl $0\n"  // save a slot on the stack.
        "pushl %%ebx\n"  // save %%ebx.
        "movl %0, %%ebx\n"  // put the thing in ebx.
        "movl %%ebx, 4(%%esp)\n"  // put the thing in the stack slot.
        "popl %%ebx\n"  // get back %%ebx (the PIC register).

        ".align 8\n"
        "1:\n"

        "movd           (%1),                   %%mm0\n" // 4 Cb         0  0  0  0 u3 u2 u1 u0
        "pxor           %%mm7,                  %%mm7\n"
        "pushl %%ebx\n"
        "movl 4(%%esp), %%ebx\n"
        "movd (%%ebx), %%mm1\n"   // 4 Cr                0  0  0  0 v3 v2 v1 v0
        "popl %%ebx\n"

        "punpcklbw      %%mm7,                  %%mm0\n" // 4 W cb   0 u3  0 u2  0 u1  0 u0
        "punpcklbw      %%mm7,                  %%mm1\n" // 4 W cr   0 v3  0 v2  0 v1  0 v0
        "psubw          %9,                     %%mm0\n"
        "psubw          %9,                     %%mm1\n"
        "movq           %%mm0,                  %%mm2\n" // Cb                   0 u3  0 u2  0 u1  0 u0
        "movq           %%mm1,                  %%mm3\n" // Cr
        "pmullw         %10,                    %%mm2\n" // Cb2green 0 R3  0 R2  0 R1  0 R0
        "movq           (%2),                   %%mm6\n" // L1      l7 L6 L5 L4 L3 L2 L1 L0
        "pmullw         %11,                    %%mm0\n" // Cb2blue
        "pand           %12,                    %%mm6\n" // L1      00 L6 00 L4 00 L2 00 L0
        "pmullw         %13,                    %%mm3\n" // Cr2green
        "movq           (%2),                   %%mm7\n" // L2
        "pmullw         %14,                    %%mm1\n" // Cr2red
        "psrlw          $8,                     %%mm7\n"        // L2           00 L7 00 L5 00 L3 00 L1
        "pmullw         %15,                    %%mm6\n" // lum1
        "paddw          %%mm3,                  %%mm2\n" // Cb2green + Cr2green == green
        "pmullw         %15,                    %%mm7\n" // lum2

        "movq           %%mm6,                  %%mm4\n" // lum1
        "paddw          %%mm0,                  %%mm6\n" // lum1 +blue 00 B6 00 B4 00 B2 00 B0
        "movq           %%mm4,                  %%mm5\n" // lum1
        "paddw          %%mm1,                  %%mm4\n" // lum1 +red  00 R6 00 R4 00 R2 00 R0
        "paddw          %%mm2,                  %%mm5\n" // lum1 +green 00 G6 00 G4 00 G2 00 G0
        "psraw          $6,                     %%mm4\n" // R1 0 .. 64
        "movq           %%mm7,                  %%mm3\n" // lum2                       00 L7 00 L5 00 L3 00 L1
        "psraw          $6,                     %%mm5\n" // G1  - .. +
        "paddw          %%mm0,                  %%mm7\n" // Lum2 +blue 00 B7 00 B5 00 B3 00 B1
        "psraw          $6,                     %%mm6\n" // B1         0 .. 64
        "packuswb       %%mm4,                  %%mm4\n" // R1 R1
        "packuswb       %%mm5,                  %%mm5\n" // G1 G1
        "packuswb       %%mm6,                  %%mm6\n" // B1 B1
        "punpcklbw      %%mm4,                  %%mm4\n"
        "punpcklbw      %%mm5,                  %%mm5\n"

        "pand           %16,                    %%mm4\n"
        "psllw          $3,                     %%mm5\n" // GREEN       1
        "punpcklbw      %%mm6,                  %%mm6\n"
        "pand           %17,                    %%mm5\n"
        "pand           %16,                    %%mm6\n"
        "por            %%mm5,                  %%mm4\n" //
        "psrlw          $11,                    %%mm6\n" // BLUE        1
        "movq           %%mm3,                  %%mm5\n" // lum2
        "paddw          %%mm1,                  %%mm3\n" // lum2 +red      00 R7 00 R5 00 R3 00 R1
        "paddw          %%mm2,                  %%mm5\n" // lum2 +green 00 G7 00 G5 00 G3 00 G1
        "psraw          $6,                     %%mm3\n" // R2
        "por            %%mm6,                  %%mm4\n" // MM4
        "psraw          $6,                     %%mm5\n" // G2
        "movq           (%2, %4),               %%mm6\n" // L3 load lum2
        "psraw          $6,                     %%mm7\n"
        "packuswb       %%mm3,                  %%mm3\n"
        "packuswb       %%mm5,                  %%mm5\n"
        "packuswb       %%mm7,                  %%mm7\n"
        "pand           %12,                    %%mm6\n" // L3
        "punpcklbw      %%mm3,                  %%mm3\n"
        "punpcklbw      %%mm5,                  %%mm5\n"
        "pmullw         %15,                    %%mm6\n" // lum3
        "punpcklbw      %%mm7,                  %%mm7\n"
        "psllw          $3,                     %%mm5\n" // GREEN 2
        "pand           %16,                    %%mm7\n"
        "pand           %16,                    %%mm3\n"
        "psrlw          $11,                    %%mm7\n" // BLUE  2
        "pand           %17,                    %%mm5\n"
        "por            %%mm7,                  %%mm3\n"
        "movq           (%2,%4),                %%mm7\n" // L4 load lum2
        "por            %%mm5,                  %%mm3\n" //
        "psrlw          $8,                     %%mm7\n" // L4
        "movq           %%mm4,                  %%mm5\n"
        "punpcklwd      %%mm3,                  %%mm4\n"
        "pmullw         %15,                    %%mm7\n" // lum4
        "punpckhwd      %%mm3,                  %%mm5\n"

        "movq           %%mm4,                  (%3)\n"  // write row1
        "movq           %%mm5,                  8(%3)\n" // write row1

        "movq           %%mm6,                  %%mm4\n" // Lum3
        "paddw          %%mm0,                  %%mm6\n" // Lum3 +blue

        "movq           %%mm4,                  %%mm5\n" // Lum3
        "paddw          %%mm1,                  %%mm4\n" // Lum3 +red
        "paddw          %%mm2,                  %%mm5\n" // Lum3 +green
        "psraw          $6,                     %%mm4\n"
        "movq           %%mm7,                  %%mm3\n" // Lum4
        "psraw          $6,                     %%mm5\n"
        "paddw          %%mm0,                  %%mm7\n" // Lum4 +blue
        "psraw          $6,                     %%mm6\n" // Lum3 +blue
        "movq           %%mm3,                  %%mm0\n" // Lum4
        "packuswb       %%mm4,                  %%mm4\n"
        "paddw          %%mm1,                  %%mm3\n" // Lum4 +red
        "packuswb       %%mm5,                  %%mm5\n"
        "paddw          %%mm2,                  %%mm0\n" // Lum4 +green
        "packuswb       %%mm6,                  %%mm6\n"
        "punpcklbw      %%mm4,                  %%mm4\n"
        "punpcklbw      %%mm5,                  %%mm5\n"
        "punpcklbw      %%mm6,                  %%mm6\n"
        "psllw          $3,                     %%mm5\n" // GREEN 3
        "pand           %16,                    %%mm4\n"
        "psraw          $6,                     %%mm3\n" // psr 6
        "psraw          $6,                     %%mm0\n"
        "pand           %16,                    %%mm6\n" // BLUE
        "pand           %17,                    %%mm5\n"
        "psrlw          $11,                    %%mm6\n" // BLUE  3
        "por            %%mm5,                  %%mm4\n"
        "psraw          $6,                     %%mm7\n"
        "por            %%mm6,                  %%mm4\n"
        "packuswb       %%mm3,                  %%mm3\n"
        "packuswb       %%mm0,                  %%mm0\n"
        "packuswb       %%mm7,                  %%mm7\n"
        "punpcklbw      %%mm3,                  %%mm3\n"
        "punpcklbw      %%mm0,                  %%mm0\n"
        "punpcklbw      %%mm7,                  %%mm7\n"
        "pand           %16,                    %%mm3\n"
        "pand           %16,                    %%mm7\n" // BLUE
        "psllw          $3,                     %%mm0\n" // GREEN 4
        "psrlw          $11,                    %%mm7\n"
        "pand           %17,                    %%mm0\n"
        "por            %%mm7,                  %%mm3\n"
        "por            %%mm0,                  %%mm3\n"

        "movq           %%mm4,                  %%mm5\n"

        "punpcklwd      %%mm3,                  %%mm4\n"
        "punpckhwd      %%mm3,                  %%mm5\n"

        "movq           %%mm4,                  (%5)\n"
        "movq           %%mm5,                  8(%5)\n"

        "addl           $8,                     %6\n"
        "addl           $8,                     %2\n"
        "addl           $4,                     (%%esp)\n"
        "addl           $4,                     %1\n"
        "cmpl           %4,                     %6\n"
        "leal           16(%3),                 %3\n"
        "leal           16(%5),%5\n" // row2+16

        "jl             1b\n"
        "addl           %4,     %2\n" // lum += cols
        "addl           %8,     %3\n" // row1+= mod
        "addl           %8,     %5\n" // row2+= mod
        "movl           $0,     %6\n" // x=0
        "cmpl           %7,     %2\n"
        "jl             1b\n"
        "addl $4, %%esp\n"  // get rid of the stack slot we reserved.
        "emms\n"
        :
        : "m" (cr), "r"(cb),"r"(lum),
          "r"(row1),"r"(cols),"r"(row2),"m"(x),"m"(y),"m"(mod),
          "m"(MMX_0080w),"m"(MMX_Ugrn565),"m"(MMX_Ublu5x5),
          "m"(MMX_00FFw),"m"(MMX_Vgrn565),"m"(MMX_Vred5x5),
          "m"(MMX_Ycoeff),"m"(MMX_red565),"m"(MMX_grn565)
    );
}

/* *INDENT-ON* */

#endif /* GCC3 i386 inline assembly */

/* vi: set ts=4 sw=4 expandtab: */