/*

 * 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