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1 /* |
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2 * LIBOIL - Library of Optimized Inner Loops |
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3 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org> |
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4 * All rights reserved. |
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5 * |
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6 * Redistribution and use in source and binary forms, with or without |
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7 * modification, are permitted provided that the following conditions |
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8 * are met: |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * 2. Redistributions in binary form must reproduce the above copyright |
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12 * notice, this list of conditions and the following disclaimer in the |
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13 * documentation and/or other materials provided with the distribution. |
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14 * |
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15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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25 * POSSIBILITY OF SUCH DAMAGE. |
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26 */ |
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27 //Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. |
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28 |
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29 #ifdef HAVE_CONFIG_H |
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30 #include "config.h" |
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31 #endif |
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32 |
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33 #include <liboil/liboilfunction.h> |
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34 #include "liboil/simdpack/simdpack.h" |
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35 #include <math.h> |
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36 |
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37 static void mix_u8_fast(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n) |
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38 { |
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39 while(n>0){ |
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40 *dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8; |
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41 src1++; |
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42 src2++; |
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43 scale++; |
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44 n--; |
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45 } |
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46 } |
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47 OIL_DEFINE_IMPL (mix_u8_fast, mix_u8); |
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48 |
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49 static void |
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50 mix_u8_fast2 (uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n) |
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51 { |
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52 while(n>0){ |
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53 *dest++ = ((*src1 - *src2) * *scale + *src2 * 255)>>8; |
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54 src1++; |
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55 src2++; |
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56 scale++; |
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57 n--; |
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58 } |
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59 } |
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60 OIL_DEFINE_IMPL (mix_u8_fast2, mix_u8); |
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61 |
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62 /* PowerPC likes this one */ |
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63 static void |
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64 mix_u8_fast3(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n) |
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65 { |
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66 int i; |
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67 |
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68 for(i=0;i<n;i++){ |
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69 dest[i] = ((src1[i] - src2[i]) * scale[i] + src2[i] * 255)>>8; |
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70 } |
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71 } |
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72 OIL_DEFINE_IMPL (mix_u8_fast3, mix_u8); |
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73 |
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74 static void |
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75 mix_u8_unroll4(uint8_t *dest, uint8_t *src1, uint8_t *src2, uint8_t *scale, int n) |
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76 { |
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77 while(n&0x3){ |
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78 *dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8; |
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79 src1++; |
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80 src2++; |
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81 scale++; |
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82 n--; |
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83 } |
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84 while(n>0){ |
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85 *dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8; |
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86 src1++; |
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87 src2++; |
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88 scale++; |
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89 *dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8; |
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90 src1++; |
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91 src2++; |
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92 scale++; |
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93 *dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8; |
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94 src1++; |
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95 src2++; |
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96 scale++; |
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97 *dest++ = (*src1 * *scale + *src2 * (255 - *scale))>>8; |
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98 src1++; |
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99 src2++; |
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100 scale++; |
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101 n-=4; |
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102 } |
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103 } |
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104 OIL_DEFINE_IMPL (mix_u8_unroll4, mix_u8); |
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105 |
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106 |
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107 |
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108 #ifdef __SYMBIAN32__ |
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109 |
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110 OilFunctionImpl* __oil_function_impl_mix_u8_fast() { |
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111 return &_oil_function_impl_mix_u8_fast; |
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112 } |
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113 #endif |
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114 |
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115 #ifdef __SYMBIAN32__ |
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116 |
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117 OilFunctionImpl* __oil_function_impl_mix_u8_fast2() { |
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118 return &_oil_function_impl_mix_u8_fast2; |
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119 } |
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120 #endif |
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121 |
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122 #ifdef __SYMBIAN32__ |
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123 |
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124 OilFunctionImpl* __oil_function_impl_mix_u8_fast3() { |
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125 return &_oil_function_impl_mix_u8_fast3; |
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126 } |
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127 #endif |
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128 |
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129 #ifdef __SYMBIAN32__ |
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130 |
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131 OilFunctionImpl* __oil_function_impl_mix_u8_unroll4() { |
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132 return &_oil_function_impl_mix_u8_unroll4; |
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133 } |
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134 #endif |
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135 |