/*

  * 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/liboilfunction.h>

 #include "liboil/simdpack/simdpack.h"

 #include <math.h>

 static void mix_u8_fast(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n)

 {

 	while(n>0){

 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;

 		src1++;

 		src2++;

 		scale++;

 		n--;

 	}

 }

 OIL_DEFINE_IMPL (mix_u8_fast, mix_u8);

 static void

 mix_u8_fast2 (uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n)

 {

 	while(n>0){

 		*dest++ = ((*src1 - *src2) * *scale + *src2 * 255)>>8;

 		src1++;

 		src2++;

 		scale++;

 		n--;

 	}

 }

 OIL_DEFINE_IMPL (mix_u8_fast2, mix_u8);

 /* PowerPC likes this one */

 static void

 mix_u8_fast3(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n)

 {

 	int i;

 	for(i=0;i<n;i++){

 		dest[i] = ((src1[i] - src2[i]) * scale[i] + src2[i] * 255)>>8;

 	}

 }

 OIL_DEFINE_IMPL (mix_u8_fast3, mix_u8);

 static void

 mix_u8_unroll4(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n)

 {

 	while(n&0x3){

 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;

 		src1++;

 		src2++;

 		scale++;

 		n--;

 	}

 	while(n>0){

 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;

 		src1++;

 		src2++;

 		scale++;

 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;

 		src1++;

 		src2++;

 		scale++;

 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;

 		src1++;

 		src2++;

 		scale++;

 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;

 		src1++;

 		src2++;

 		scale++;

 		n-=4;

 	}

 }

 OIL_DEFINE_IMPL (mix_u8_unroll4, mix_u8);

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_mix_u8_fast() {

 		return &_oil_function_impl_mix_u8_fast;

 }

 #endif

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_mix_u8_fast2() {

 		return &_oil_function_impl_mix_u8_fast2;

 }

 #endif

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_mix_u8_fast3() {

 		return &_oil_function_impl_mix_u8_fast3;

 }

 #endif

 #ifdef	__SYMBIAN32__

 OilFunctionImpl* __oil_function_impl_mix_u8_unroll4() {

 		return &_oil_function_impl_mix_u8_unroll4;

 }

 #endif