/*

  * LIBOIL - Library of Optimized Inner Loops

  * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  * 1. Redistributions of source code must retain the above copyright

  *    notice, this list of conditions and the following disclaimer.

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in the

  *    documentation and/or other materials provided with the distribution.

  * 

  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

  * POSSIBILITY OF SUCH DAMAGE.

  */

 //Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

 #ifdef HAVE_CONFIG_H

 #include "config.h"

 #endif

 #include <liboil/liboil.h>

 #include <liboil/liboilfunction.h>

 OIL_DECLARE_CLASS (argb_paint_u8);

 #define div255(x) (((x + 128) + ((x + 128)>>8))>>8)

 #define blend(x,y,a) div255((x)*(a) + (y)*(255-(a)))

 static short constants[][4] = {

   { 255, 255, 255, 255 },

   { 128, 128, 128, 128 }

 };

 static void

 argb_paint_u8_mmx (uint8_t *dest, uint8_t *color, uint8_t *alpha, int n)

 {

 #if !defined(__WINSCW__) && !defined(__WINS__)      

   if (n<1)return;

   asm volatile (

       "  pxor %%mm0, %%mm0\n"

       "  movq (%1), %%mm3\n"

       "  punpcklbw %%mm0, %%mm3\n"

       "  movl $0, %1\n"

       "1:\n"

       "  movq (%0), %%mm1\n"

       "  punpcklbw %%mm0, %%mm1\n"

       "  movb (%2), %%al\n"

       "  je 4f\n"

       "  cmpl $255, %1\n"

       "  jne 2f\n"

       "  movq %%mm3, %%mm2\n"

       "  jmp 3f\n"

       "2:\n"

       "  movd %1, %%mm2\n"

       "  pshufw $0x00, %%mm2, %%mm2\n"

       "  movq 0(%4), %%mm4\n"

       "  psubw %%mm2, %%mm4\n"

       "  pmullw %%mm1, %%mm4\n"

       "  pmullw %%mm3, %%mm2\n"

       "  paddw %%mm4, %%mm2\n"

       "  paddw 8(%4), %%mm2\n"

       "  movq %%mm2, %%mm1\n"

       "  psrlw $8, %%mm1\n"

       "  paddw %%mm1, %%mm2\n"

       "  psrlw $8, %%mm2\n"

       "3: \n"

       "  packuswb %%mm0, %%mm2\n"

       "  movd %%mm2, (%0)\n"

       "4:\n"

       "  add $4, %0\n"

       "  add $1, %2\n"

       "  decl %3\n"

       "  jne 1b\n"

       "  emms\n"

       : "+r" (dest), "+a" (color), "+r" (alpha), "+r" (n)

       : "r" (&constants));

 #endif 

 }

 OIL_DEFINE_IMPL_FULL (argb_paint_u8_mmx, argb_paint_u8, OIL_IMPL_FLAG_MMX|OIL_IMPL_FLAG_MMXEXT);

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_argb_paint_u8_mmx, argb_paint_u8() {

 		return &_oil_function_impl_argb_paint_u8_mmx, argb_paint_u8;

 }

 #endif