sl@0: /*
sl@0:  * LIBOIL - Library of Optimized Inner Loops
sl@0:  * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org>
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
sl@0:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
sl@0:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
sl@0:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
sl@0:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
sl@0:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
sl@0:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
sl@0:  * POSSIBILITY OF SUCH DAMAGE.
sl@0:  */
sl@0: //Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 
sl@0: 
sl@0: #ifdef HAVE_CONFIG_H
sl@0: #include "config.h"
sl@0: #endif
sl@0: 
sl@0: #include <liboil/liboilfunction.h>
sl@0: #include "liboil/simdpack/simdpack.h"
sl@0: #include <math.h>
sl@0: 
sl@0: static void mix_u8_fast(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n)
sl@0: {
sl@0: 	while(n>0){
sl@0: 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;
sl@0: 		src1++;
sl@0: 		src2++;
sl@0: 		scale++;
sl@0: 		n--;
sl@0: 	}
sl@0: }
sl@0: OIL_DEFINE_IMPL (mix_u8_fast, mix_u8);
sl@0: 
sl@0: static void
sl@0: mix_u8_fast2 (uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n)
sl@0: {
sl@0: 	while(n>0){
sl@0: 		*dest++ = ((*src1 - *src2) * *scale + *src2 * 255)>>8;
sl@0: 		src1++;
sl@0: 		src2++;
sl@0: 		scale++;
sl@0: 		n--;
sl@0: 	}
sl@0: }
sl@0: OIL_DEFINE_IMPL (mix_u8_fast2, mix_u8);
sl@0: 
sl@0: /* PowerPC likes this one */
sl@0: static void
sl@0: mix_u8_fast3(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n)
sl@0: {
sl@0: 	int i;
sl@0: 
sl@0: 	for(i=0;i<n;i++){
sl@0: 		dest[i] = ((src1[i] - src2[i]) * scale[i] + src2[i] * 255)>>8;
sl@0: 	}
sl@0: }
sl@0: OIL_DEFINE_IMPL (mix_u8_fast3, mix_u8);
sl@0: 
sl@0: static void
sl@0: mix_u8_unroll4(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n)
sl@0: {
sl@0: 	while(n&0x3){
sl@0: 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;
sl@0: 		src1++;
sl@0: 		src2++;
sl@0: 		scale++;
sl@0: 		n--;
sl@0: 	}
sl@0: 	while(n>0){
sl@0: 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;
sl@0: 		src1++;
sl@0: 		src2++;
sl@0: 		scale++;
sl@0: 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;
sl@0: 		src1++;
sl@0: 		src2++;
sl@0: 		scale++;
sl@0: 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;
sl@0: 		src1++;
sl@0: 		src2++;
sl@0: 		scale++;
sl@0: 		*dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8;
sl@0: 		src1++;
sl@0: 		src2++;
sl@0: 		scale++;
sl@0: 		n-=4;
sl@0: 	}
sl@0: }
sl@0: OIL_DEFINE_IMPL (mix_u8_unroll4, mix_u8);
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_mix_u8_fast() {
sl@0: 		return &_oil_function_impl_mix_u8_fast;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_mix_u8_fast2() {
sl@0: 		return &_oil_function_impl_mix_u8_fast2;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_mix_u8_fast3() {
sl@0: 		return &_oil_function_impl_mix_u8_fast3;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_mix_u8_unroll4() {
sl@0: 		return &_oil_function_impl_mix_u8_unroll4;
sl@0: }
sl@0: #endif
sl@0: