1 /*

     2  * LIBOIL - Library of Optimized Inner Loops

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

     4  * All rights reserved.

     5  *

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

     7  * modification, are permitted provided that the following conditions

     8  * are met:

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

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

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

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

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

    14  * 

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

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

    17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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

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

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

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

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

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

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

    25  * POSSIBILITY OF SUCH DAMAGE.

    26  */

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

    28 

    29 #ifdef HAVE_CONFIG_H

    30 #include "config.h"

    31 #endif

    32 

    33 #include <liboil/liboilfunction.h>

    34 #include <math.h>

    35 

    36 #define ABS(x) ((x)>0 ? (x) : -(x))

    37 

    38 /**

    39  * oil_sad8x8_u8_avg:

    40  * @d_1:

    41  * @s1_8x8:

    42  * @ss1:

    43  * @s2_8x8:

    44  * @s3_8x8:

    45  * @ss2:

    46  *

    47  * Calculates the sum of absolute differences between @s1_8x8 and

    48  * the average of @s2_8x8 and @s3_8x8.

    49  *

    50  * FIXME: This function is broken because the reference function assumes

    51  * the stride for @s3_8x8 is @ss2.

    52  */

    53 OIL_DEFINE_CLASS (sad8x8_u8_avg,

    54     "uint32_t *d_1, uint8_t *s1_8x8, int ss1, uint8_t *s2_8x8, uint8_t *s3_8x8, int ss2");

    55 

    56 static void

    57 sad8x8_u8_avg_ref (uint32_t *dest, uint8_t *src1, int ss1, uint8_t *src2, uint8_t *src3, int ss2)

    58 {

    59   int i;

    60   uint32_t diff = 0;

    61 

    62   for (i=0; i<8;i++){

    63     diff += ABS(((int)src1[0]) - (((int)src2[0] + (int)src3[0]) / 2));

    64     diff += ABS(((int)src1[1]) - (((int)src2[1] + (int)src3[1]) / 2));

    65     diff += ABS(((int)src1[2]) - (((int)src2[2] + (int)src3[2]) / 2));

    66     diff += ABS(((int)src1[3]) - (((int)src2[3] + (int)src3[3]) / 2));

    67     diff += ABS(((int)src1[4]) - (((int)src2[4] + (int)src3[4]) / 2));

    68     diff += ABS(((int)src1[5]) - (((int)src2[5] + (int)src3[5]) / 2));

    69     diff += ABS(((int)src1[6]) - (((int)src2[6] + (int)src3[6]) / 2));

    70     diff += ABS(((int)src1[7]) - (((int)src2[7] + (int)src3[7]) / 2));

    71 

    72     /* Step to next row of block. */

    73     src1 += ss1;

    74     src2 += ss2;

    75     src3 += ss2;

    76   }

    77   *dest = diff;

    78 }

    79 

    80 OIL_DEFINE_IMPL_REF (sad8x8_u8_avg_ref, sad8x8_u8_avg);

    81 

    82 

    83 

    84 

    85 #ifdef	__SYMBIAN32__

    86  

    87 OilFunctionClass* __oil_function_class_sad8x8_u8_avg() {

    88 		return &_oil_function_class_sad8x8_u8_avg;

    89 }

    90 #endif

    91 

    92 

    93 

    94 #ifdef	__SYMBIAN32__

    95  

    96 OilFunctionImpl* __oil_function_impl_sad8x8_u8_avg_ref() {

    97 		return &_oil_function_impl_sad8x8_u8_avg_ref;

    98 }

    99 #endif

   100 

   101 

   102 

   103 #ifdef	__SYMBIAN32__

   104  

   105 EXPORT_C void** _oil_function_class_ptr_sad8x8_u8_avg ()	{

   106 	oil_function_class_ptr_sad8x8_u8_avg = __oil_function_class_sad8x8_u8_avg();

   107 	return &oil_function_class_ptr_sad8x8_u8_avg->func;

   108 	}

   109 #endif

   110