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 <math.h>
sl@0: 
sl@0: #define ABS(x) ((x)>0 ? (x) : -(x))
sl@0: 
sl@0: /**
sl@0:  * oil_sad8x8_u8_avg:
sl@0:  * @d_1:
sl@0:  * @s1_8x8:
sl@0:  * @ss1:
sl@0:  * @s2_8x8:
sl@0:  * @s3_8x8:
sl@0:  * @ss2:
sl@0:  *
sl@0:  * Calculates the sum of absolute differences between @s1_8x8 and
sl@0:  * the average of @s2_8x8 and @s3_8x8.
sl@0:  *
sl@0:  * FIXME: This function is broken because the reference function assumes
sl@0:  * the stride for @s3_8x8 is @ss2.
sl@0:  */
sl@0: OIL_DEFINE_CLASS (sad8x8_u8_avg,
sl@0:     "uint32_t *d_1, uint8_t *s1_8x8, int ss1, uint8_t *s2_8x8, uint8_t *s3_8x8, int ss2");
sl@0: 
sl@0: static void
sl@0: sad8x8_u8_avg_ref (uint32_t *dest, uint8_t *src1, int ss1, uint8_t *src2, uint8_t *src3, int ss2)
sl@0: {
sl@0:   int i;
sl@0:   uint32_t diff = 0;
sl@0: 
sl@0:   for (i=0; i<8;i++){
sl@0:     diff += ABS(((int)src1[0]) - (((int)src2[0] + (int)src3[0]) / 2));
sl@0:     diff += ABS(((int)src1[1]) - (((int)src2[1] + (int)src3[1]) / 2));
sl@0:     diff += ABS(((int)src1[2]) - (((int)src2[2] + (int)src3[2]) / 2));
sl@0:     diff += ABS(((int)src1[3]) - (((int)src2[3] + (int)src3[3]) / 2));
sl@0:     diff += ABS(((int)src1[4]) - (((int)src2[4] + (int)src3[4]) / 2));
sl@0:     diff += ABS(((int)src1[5]) - (((int)src2[5] + (int)src3[5]) / 2));
sl@0:     diff += ABS(((int)src1[6]) - (((int)src2[6] + (int)src3[6]) / 2));
sl@0:     diff += ABS(((int)src1[7]) - (((int)src2[7] + (int)src3[7]) / 2));
sl@0: 
sl@0:     /* Step to next row of block. */
sl@0:     src1 += ss1;
sl@0:     src2 += ss2;
sl@0:     src3 += ss2;
sl@0:   }
sl@0:   *dest = diff;
sl@0: }
sl@0: 
sl@0: OIL_DEFINE_IMPL_REF (sad8x8_u8_avg_ref, sad8x8_u8_avg);
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionClass* __oil_function_class_sad8x8_u8_avg() {
sl@0: 		return &_oil_function_class_sad8x8_u8_avg;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: OilFunctionImpl* __oil_function_impl_sad8x8_u8_avg_ref() {
sl@0: 		return &_oil_function_impl_sad8x8_u8_avg_ref;
sl@0: }
sl@0: #endif
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifdef	__SYMBIAN32__
sl@0:  
sl@0: EXPORT_C void** _oil_function_class_ptr_sad8x8_u8_avg ()	{
sl@0: 	oil_function_class_ptr_sad8x8_u8_avg = __oil_function_class_sad8x8_u8_avg();
sl@0: 	return &oil_function_class_ptr_sad8x8_u8_avg->func;
sl@0: 	}
sl@0: #endif
sl@0: