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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/liboil.h" |
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34 #include "liboilfunction.h" |
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35 #include "liboil/liboilcolorspace.h" |
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36 #include "liboil/liboiltest.h" |
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37 #include <string.h> |
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38 |
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39 /** |
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40 * oil_ayuv2argb_u8: |
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41 * @d_4xn: |
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42 * @s_4xn: |
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43 * @n: |
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44 * |
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45 * Converts AYUV pixels to ARGB pixels. AYUV pixels are in the |
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46 * JPEG colorspace. Note that this function doesn't follow normal |
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47 * liboil pixel conventions. |
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48 * |
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49 * (This function should be replaced by one that handles other |
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50 * conversion factors.) |
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51 */ |
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52 OIL_DEFINE_CLASS (ayuv2argb_u8, "uint8_t *d_4xn, uint8_t *s_4xn, int n"); |
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53 |
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54 |
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55 #define clamp(x,a,b) clamp_lower(clamp_upper(x,b),a) |
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56 #define clamp_lower(x,a) ((x<a)?(a):(x)) |
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57 #define clamp_upper(x,b) ((x>b)?(b):(x)) |
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58 |
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59 /* from the JFIF spec */ |
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60 #define YUV_TO_R(y,u,v) clamp((y) + 1.402*((v)-128.0),0,255) |
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61 #define YUV_TO_G(y,u,v) clamp((y) - 0.34414*((u)-128.0) - 0.71414*((v)-128.0),0,255) |
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62 #define YUV_TO_B(y,u,v) clamp((y) + 1.772*((u)-128.0),0,255) |
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63 |
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64 #define muldiv256(x,y) (((x)*(y) + 128)>>8) |
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65 #define YUV_TO_R_INT8(y,u,v) clamp((y) + muldiv256(359,(v)-128),0,255) |
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66 #define YUV_TO_G_INT8(y,u,v) clamp((y) + muldiv256(-88,(u)-128) + muldiv256(-183,(v)-128),0,255) |
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67 #define YUV_TO_B_INT8(y,u,v) clamp((y) + muldiv256(454,(u)-128),0,255) |
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68 |
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69 #define muldiv65536(x,y) (((x)*(y) + 32768)>>16) |
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70 #define YUV_TO_R_INT16(y,u,v) clamp((y) + muldiv65536(91881,(v)-128),0,255) |
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71 #define YUV_TO_G_INT16(y,u,v) clamp((y) - muldiv65536(22554,(u)-128) - muldiv65536(46802,(v)-128),0,255) |
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72 #define YUV_TO_B_INT16(y,u,v) clamp((y) + muldiv65536(116130,(u)-128),0,255) |
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73 |
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74 |
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75 #define SHIFT 6 |
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76 #define MULT (1<<6) |
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77 #define X(x) ((int)((x)*(1<<(SHIFT+8)) + 0.5)) |
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78 static int16_t jfif_matrix[][4] = { |
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79 { 0, 0, -8192, -8192 }, |
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80 { 16384, 0, 0, 0 }, |
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81 { 0, 16384, 16384, 16384 }, |
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82 { 0, 0, -5638, 29032 }, |
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83 { 0, 22970, -11700, 0 }, |
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84 { 0, 0, 0, 0 } |
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85 }; |
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86 |
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87 static void |
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88 colorspace_argb_test (OilTest *test) |
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89 { |
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90 int16_t *data = oil_test_get_source_data (test, OIL_ARG_SRC2); |
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91 |
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92 memcpy (data, jfif_matrix, 4*2*6); |
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93 } |
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94 |
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95 OIL_DEFINE_CLASS_FULL (colorspace_argb, "uint32_t *d, uint32_t *s, int16_t *s2_24, int n", colorspace_argb_test); |
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96 |
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97 static void |
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98 colorspace_argb_ref (uint32_t *dest, const uint32_t *src, const int16_t *matrix, int n) |
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99 { |
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100 int i; |
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101 |
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102 for(i=0;i<n;i++){ |
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103 int sa = (oil_argb_A(src[i])<<SHIFT) + matrix[0*4+0]; |
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104 int sr = (oil_argb_R(src[i])<<SHIFT) + matrix[0*4+1]; |
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105 int sg = (oil_argb_G(src[i])<<SHIFT) + matrix[0*4+2]; |
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106 int sb = (oil_argb_B(src[i])<<SHIFT) + matrix[0*4+3]; |
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107 int da, dr, dg, db; |
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108 |
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109 #define MUL(a,b) (((a)*(b))>>16) |
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110 da = (MUL(sa,matrix[1*4+0]) + MUL(sr,matrix[2*4+0]) + MUL(sg,matrix[3*4+0]) + |
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111 MUL(sb,matrix[4*4+0]) + matrix[5*4+0] + 8)>>(2*SHIFT - 8); |
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112 dr = (MUL(sa,matrix[1*4+1]) + MUL(sr,matrix[2*4+1]) + MUL(sg,matrix[3*4+1]) + |
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113 MUL(sb,matrix[4*4+1]) + matrix[5*4+1] + 8)>>(2*SHIFT - 8); |
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114 dg = (MUL(sa,matrix[1*4+2]) + MUL(sr,matrix[2*4+2]) + MUL(sg,matrix[3*4+2]) + |
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115 MUL(sb,matrix[4*4+2]) + matrix[5*4+2] + 8)>>(2*SHIFT - 8); |
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116 db = (MUL(sa,matrix[1*4+3]) + MUL(sr,matrix[2*4+3]) + MUL(sg,matrix[3*4+3]) + |
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117 MUL(sb,matrix[4*4+3]) + matrix[5*4+3] + 8)>>(2*SHIFT - 8); |
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118 dest[i] = oil_argb(da, dr, dg, db); |
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119 } |
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120 |
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121 } |
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122 OIL_DEFINE_IMPL_REF (colorspace_argb_ref, colorspace_argb); |
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123 |
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124 |
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125 static void |
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126 ayuv2argb_u8_ref (uint8_t *argb, const uint8_t *ayuv, int n) |
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127 { |
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128 int i; |
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129 |
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130 for(i=0;i<n;i++){ |
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131 argb[0] = ayuv[0]; |
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132 argb[1] = YUV_TO_R_INT8(ayuv[1], ayuv[2], ayuv[3]); |
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133 argb[2] = YUV_TO_G_INT8(ayuv[1], ayuv[2], ayuv[3]); |
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134 argb[3] = YUV_TO_B_INT8(ayuv[1], ayuv[2], ayuv[3]); |
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135 argb+=4; |
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136 ayuv+=4; |
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137 } |
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138 |
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139 } |
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140 OIL_DEFINE_IMPL_REF (ayuv2argb_u8_ref, ayuv2argb_u8); |
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141 |
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142 |
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143 |
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144 |
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145 #ifdef __SYMBIAN32__ |
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146 |
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147 OilFunctionClass* __oil_function_class_ayuv2argb_u8() { |
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148 return &_oil_function_class_ayuv2argb_u8; |
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149 } |
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150 #endif |
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151 |
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152 #ifdef __SYMBIAN32__ |
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153 |
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154 OilFunctionClass* __oil_function_class_colorspace_argb() { |
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155 return &_oil_function_class_colorspace_argb; |
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156 } |
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157 #endif |
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158 |
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159 |
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160 |
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161 #ifdef __SYMBIAN32__ |
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162 |
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163 OilFunctionImpl* __oil_function_impl_colorspace_argb_ref() { |
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164 return &_oil_function_impl_colorspace_argb_ref; |
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165 } |
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166 #endif |
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167 |
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168 #ifdef __SYMBIAN32__ |
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169 |
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170 OilFunctionImpl* __oil_function_impl_ayuv2argb_u8_ref() { |
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171 return &_oil_function_impl_ayuv2argb_u8_ref; |
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172 } |
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173 #endif |
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174 |
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175 |
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176 |
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177 #ifdef __SYMBIAN32__ |
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178 |
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179 EXPORT_C void** _oil_function_class_ptr_ayuv2argb_u8 () { |
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180 oil_function_class_ptr_ayuv2argb_u8 = __oil_function_class_ayuv2argb_u8(); |
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181 return &oil_function_class_ptr_ayuv2argb_u8->func; |
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182 } |
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183 #endif |
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184 |
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185 #ifdef __SYMBIAN32__ |
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186 |
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187 EXPORT_C void** _oil_function_class_ptr_colorspace_argb () { |
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188 oil_function_class_ptr_colorspace_argb = __oil_function_class_colorspace_argb(); |
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189 return &oil_function_class_ptr_colorspace_argb->func; |
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190 } |
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191 #endif |
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192 |