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/liboil.h>

    34 #include <liboil/liboilfunction.h>

    35 #include <liboil/liboiltest.h>

    36 #include <liboil/liboilrandom.h>

    37 

    38 

    39 /**

    40  * oil_resample_linear_u8:

    41  * @d_n:

    42  * @s_2xn:

    43  * @n:

    44  * @i_2:

    45  *

    46  * Linearly resamples a row of pixels.  FIXME.

    47  */

    48 static void

    49 resample_linear_u8_test (OilTest *test)

    50 {

    51   uint32_t *in = (uint32_t *) oil_test_get_source_data (test, OIL_ARG_INPLACE1);

    52 

    53   in[0] = 0;

    54   in[1] = 65536;

    55 }

    56 OIL_DEFINE_CLASS_FULL (resample_linear_u8,

    57     "uint8_t *d_n, uint8_t *s_2xn, int n, uint32_t *i_2",

    58     resample_linear_u8_test);

    59 

    60 /**

    61  * oil_resample_linear_argb:

    62  * @d_n:

    63  * @s_2xn:

    64  * @n:

    65  * @i_2:

    66  *

    67  * Linearly resamples a row of pixels.  FIXME.

    68  */

    69 static void

    70 resample_linear_argb_test (OilTest *test)

    71 {

    72   uint32_t *in = (uint32_t *) oil_test_get_source_data (test, OIL_ARG_INPLACE1);

    73 

    74   in[0] = 0;

    75   in[1] = 65536;

    76 }

    77 OIL_DEFINE_CLASS_FULL (resample_linear_argb,

    78     "uint32_t *d_n, uint32_t *s_2xn, int n, uint32_t *i_2",

    79     resample_linear_argb_test);

    80 

    81 static void

    82 resample_linear_u8_ref (uint8_t *dest, uint8_t *src, int n,

    83     uint32_t *in)

    84 {

    85   int acc = in[0];

    86   int increment = in[1];

    87   int i;

    88   int j;

    89   int x;

    90 

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

    92     j = acc>>16;

    93     x = (acc&0xffff)>>8;

    94     dest[i] = (src[j]*(256-x) + src[j+1]*x) >> 8;

    95 

    96     acc += increment;

    97   }

    98 

    99   in[0] = acc;

   100 }

   101 OIL_DEFINE_IMPL_REF (resample_linear_u8_ref, resample_linear_u8);

   102 

   103 static void

   104 resample_linear_argb_ref (uint32_t *d, uint32_t *s, int n, uint32_t *in)

   105 {

   106   uint8_t *src = (uint8_t *)s;

   107   uint8_t *dest = (uint8_t *)d;

   108   int acc = in[0];

   109   int increment = in[1];

   110   int i;

   111   int j;

   112   int x;

   113 

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

   115     j = acc>>16;

   116     x = (acc&0xffff)>>8;

   117     dest[4*i+0] = (src[4*j+0]*(256-x) + src[4*j+4]*x) >> 8;

   118     dest[4*i+1] = (src[4*j+1]*(256-x) + src[4*j+5]*x) >> 8;

   119     dest[4*i+2] = (src[4*j+2]*(256-x) + src[4*j+6]*x) >> 8;

   120     dest[4*i+3] = (src[4*j+3]*(256-x) + src[4*j+7]*x) >> 8;

   121 

   122     acc += increment;

   123   }

   124 

   125   in[0] = acc;

   126 }

   127 OIL_DEFINE_IMPL_REF (resample_linear_argb_ref, resample_linear_argb);

   128 

   129 

   130 static void

   131 merge_linear_test (OilTest *test)

   132 {

   133   uint32_t *src3 = (uint32_t *) oil_test_get_source_data (test, OIL_ARG_SRC3);

   134 

   135   do {

   136     src3[0] = oil_rand_u16() & 0x1ff;

   137   } while (src3[0] > 256);

   138 }

   139 OIL_DEFINE_CLASS_FULL (merge_linear_argb,

   140     "uint32_t *d_n, uint32_t *s_n, uint32_t *s2_n, uint32_t *s3_1, int n",

   141     merge_linear_test);

   142 OIL_DEFINE_CLASS_FULL (merge_linear_u8,

   143     "uint8_t *d_n, uint8_t *s_n, uint8_t *s2_n, uint32_t *s3_1, int n",

   144     merge_linear_test);

   145 

   146 /**

   147  * oil_merge_linear_argb:

   148  * @d_n:

   149  * @s_n:

   150  * @s2_n:

   151  * @s3_1:

   152  * @n:

   153  *

   154  * Linearly interpolate the @s_n and @s2_n arrays using the scale

   155  * factor in @s3_1.  The value @s3_1 must be in the range [0, 256]

   156  * A value of 0 indicates weights of 1.0 and 0.0 for

   157  * the s_n and s2_n arrays respectively.  A value of 256 indicates

   158  * weights of 0.0 and 1.0 respectively.

   159  *

   160  * This function is not intended for alpha blending; use one of the

   161  * compositing functions instead.

   162  */

   163 static void

   164 merge_linear_argb_ref (uint32_t *d, uint32_t *s1, uint32_t *s2,

   165     uint32_t *src3, int n)

   166 {

   167   uint8_t *src1 = (uint8_t *)s1;

   168   uint8_t *src2 = (uint8_t *)s2;

   169   uint8_t *dest = (uint8_t *)d;

   170   int i;

   171   int x = src3[0];

   172 

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

   174     dest[4*i+0] = (src1[4*i+0]*(256-x) + src2[4*i+0]*x) >> 8;

   175     dest[4*i+1] = (src1[4*i+1]*(256-x) + src2[4*i+1]*x) >> 8;

   176     dest[4*i+2] = (src1[4*i+2]*(256-x) + src2[4*i+2]*x) >> 8;

   177     dest[4*i+3] = (src1[4*i+3]*(256-x) + src2[4*i+3]*x) >> 8;

   178   }

   179 }

   180 OIL_DEFINE_IMPL_REF (merge_linear_argb_ref, merge_linear_argb);

   181 

   182 

   183 /**

   184  * oil_merge_linear_u8:

   185  * @d_n:

   186  * @s_n:

   187  * @s2_n:

   188  * @s3_1:

   189  * @n:

   190  *

   191  * Linearly interpolate the @s_n and @s2_n arrays using the scale

   192  * factor in @s3_1.  The value @s3_1 must be in the range [0, 255].

   193  * The value translates into weights of 1.0-(value/256.0) and

   194  * (value/256.0) for the s_n and s2_n arrays respectively.

   195  *

   196  * This function is not intended for alpha blending; use one of the

   197  * compositing functions instead.

   198  */

   199 static void

   200 merge_linear_u8_ref (uint8_t *dest, uint8_t *src1, uint8_t *src2,

   201     uint32_t *src3, int n)

   202 {

   203   int i;

   204   int x = src3[0];

   205 

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

   207     dest[i] = (src1[i]*(256-x) + src2[i]*x) >> 8;

   208   }

   209 }

   210 OIL_DEFINE_IMPL_REF (merge_linear_u8_ref, merge_linear_u8);

   211 

   212 

   213 

   214 

   215 #ifdef	__SYMBIAN32__

   216  

   217 OilFunctionClass* __oil_function_class_resample_linear_u8() {

   218         return &_oil_function_class_resample_linear_u8;

   219 }

   220 #endif

   221 

   222 #ifdef	__SYMBIAN32__

   223  

   224 OilFunctionClass* __oil_function_class_resample_linear_argb() {

   225         return &_oil_function_class_resample_linear_argb;

   226 }

   227 #endif

   228 

   229 #ifdef	__SYMBIAN32__

   230  

   231 OilFunctionClass* __oil_function_class_merge_linear_argb() {

   232         return &_oil_function_class_merge_linear_argb;

   233 }

   234 #endif

   235 

   236 #ifdef	__SYMBIAN32__

   237  

   238 OilFunctionClass* __oil_function_class_merge_linear_u8() {

   239         return &_oil_function_class_merge_linear_u8;

   240 }

   241 #endif

   242 

   243 

   244 

   245 #ifdef	__SYMBIAN32__

   246  

   247 OilFunctionImpl* __oil_function_impl_resample_linear_u8_ref() {

   248         return &_oil_function_impl_resample_linear_u8_ref;

   249 }

   250 #endif

   251 

   252 #ifdef	__SYMBIAN32__

   253  

   254 OilFunctionImpl* __oil_function_impl_resample_linear_argb_ref() {

   255         return &_oil_function_impl_resample_linear_argb_ref;

   256 }

   257 #endif

   258 

   259 #ifdef	__SYMBIAN32__

   260  

   261 OilFunctionImpl* __oil_function_impl_merge_linear_argb_ref() {

   262         return &_oil_function_impl_merge_linear_argb_ref;

   263 }

   264 #endif

   265 

   266 #ifdef	__SYMBIAN32__

   267  

   268 OilFunctionImpl* __oil_function_impl_merge_linear_u8_ref() {

   269         return &_oil_function_impl_merge_linear_u8_ref;

   270 }

   271 #endif

   272 

   273 

   274 

   275 

   276 #ifdef	__SYMBIAN32__

   277  

   278 EXPORT_C void** _oil_function_class_ptr_resample_linear_u8 ()	{

   279 	oil_function_class_ptr_resample_linear_u8 = __oil_function_class_resample_linear_u8();

   280 	return &oil_function_class_ptr_resample_linear_u8->func;

   281 	}

   282 #endif

   283 

   284 #ifdef	__SYMBIAN32__

   285  

   286 EXPORT_C void** _oil_function_class_ptr_resample_linear_argb ()	{

   287 	oil_function_class_ptr_resample_linear_argb = __oil_function_class_resample_linear_argb();

   288 	return &oil_function_class_ptr_resample_linear_argb->func;

   289 	}

   290 #endif

   291 

   292 #ifdef	__SYMBIAN32__

   293  

   294 EXPORT_C void** _oil_function_class_ptr_merge_linear_argb ()	{

   295 	oil_function_class_ptr_merge_linear_argb = __oil_function_class_merge_linear_argb();

   296 	return &oil_function_class_ptr_merge_linear_argb->func;

   297 	}

   298 #endif

   299 

   300 #ifdef	__SYMBIAN32__

   301  

   302 EXPORT_C void** _oil_function_class_ptr_merge_linear_u8 ()	{

   303 	oil_function_class_ptr_merge_linear_u8 = __oil_function_class_merge_linear_u8();

   304 	return &oil_function_class_ptr_merge_linear_u8->func;

   305 	}

   306 #endif

   307