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Rev | Author | Line No. | Line |
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4680 | right-hear | 1 | #include "fitz.h" |
2 | |||
3 | #define SLOWCMYK |
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4 | |||
5 | fz_colorspace * |
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6 | fz_new_colorspace(char *name, int n) |
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7 | { |
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8 | fz_colorspace *cs = fz_malloc(sizeof(fz_colorspace)); |
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9 | cs->refs = 1; |
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10 | fz_strlcpy(cs->name, name, sizeof cs->name); |
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11 | cs->n = n; |
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12 | cs->to_rgb = NULL; |
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13 | cs->from_rgb = NULL; |
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14 | cs->free_data = NULL; |
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15 | cs->data = NULL; |
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16 | return cs; |
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17 | } |
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18 | |||
19 | fz_colorspace * |
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20 | fz_keep_colorspace(fz_colorspace *cs) |
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21 | { |
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22 | if (cs->refs < 0) |
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23 | return cs; |
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24 | cs->refs ++; |
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25 | return cs; |
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26 | } |
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27 | |||
28 | void |
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29 | fz_drop_colorspace(fz_colorspace *cs) |
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30 | { |
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31 | if (cs && cs->refs < 0) |
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32 | return; |
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33 | if (cs && --cs->refs == 0) |
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34 | { |
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35 | if (cs->free_data && cs->data) |
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36 | cs->free_data(cs); |
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37 | fz_free(cs); |
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38 | } |
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39 | } |
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40 | |||
41 | /* Device colorspace definitions */ |
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42 | |||
43 | static void gray_to_rgb(fz_colorspace *cs, float *gray, float *rgb) |
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44 | { |
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45 | rgb[0] = gray[0]; |
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46 | rgb[1] = gray[0]; |
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47 | rgb[2] = gray[0]; |
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48 | } |
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49 | |||
50 | static void rgb_to_gray(fz_colorspace *cs, float *rgb, float *gray) |
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51 | { |
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52 | float r = rgb[0]; |
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53 | float g = rgb[1]; |
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54 | float b = rgb[2]; |
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55 | gray[0] = r * 0.3f + g * 0.59f + b * 0.11f; |
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56 | } |
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57 | |||
58 | static void rgb_to_rgb(fz_colorspace *cs, float *rgb, float *xyz) |
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59 | { |
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60 | xyz[0] = rgb[0]; |
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61 | xyz[1] = rgb[1]; |
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62 | xyz[2] = rgb[2]; |
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63 | } |
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64 | |||
65 | static void bgr_to_rgb(fz_colorspace *cs, float *bgr, float *rgb) |
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66 | { |
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67 | rgb[0] = bgr[2]; |
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68 | rgb[1] = bgr[1]; |
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69 | rgb[2] = bgr[0]; |
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70 | } |
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71 | |||
72 | static void rgb_to_bgr(fz_colorspace *cs, float *rgb, float *bgr) |
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73 | { |
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74 | bgr[0] = rgb[2]; |
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75 | bgr[1] = rgb[1]; |
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76 | bgr[2] = rgb[0]; |
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77 | } |
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78 | |||
79 | static void cmyk_to_rgb(fz_colorspace *cs, float *cmyk, float *rgb) |
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80 | { |
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81 | #ifdef SLOWCMYK /* from poppler */ |
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82 | float c = cmyk[0], m = cmyk[1], y = cmyk[2], k = cmyk[3]; |
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83 | float c1 = 1 - c, m1 = 1 - m, y1 = 1 - y, k1 = 1 - k; |
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84 | float r, g, b, x; |
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85 | |||
86 | /* this is a matrix multiplication, unrolled for performance */ |
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87 | x = c1 * m1 * y1 * k1; /* 0 0 0 0 */ |
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88 | r = g = b = x; |
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89 | x = c1 * m1 * y1 * k; /* 0 0 0 1 */ |
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90 | r += 0.1373 * x; |
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91 | g += 0.1216 * x; |
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92 | b += 0.1255 * x; |
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93 | x = c1 * m1 * y * k1; /* 0 0 1 0 */ |
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94 | r += x; |
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95 | g += 0.9490 * x; |
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96 | x = c1 * m1 * y * k; /* 0 0 1 1 */ |
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97 | r += 0.1098 * x; |
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98 | g += 0.1020 * x; |
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99 | x = c1 * m * y1 * k1; /* 0 1 0 0 */ |
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100 | r += 0.9255 * x; |
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101 | b += 0.5490 * x; |
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102 | x = c1 * m * y1 * k; /* 0 1 0 1 */ |
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103 | r += 0.1412 * x; |
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104 | x = c1 * m * y * k1; /* 0 1 1 0 */ |
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105 | r += 0.9294 * x; |
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106 | g += 0.1098 * x; |
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107 | b += 0.1412 * x; |
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108 | x = c1 * m * y * k; /* 0 1 1 1 */ |
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109 | r += 0.1333 * x; |
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110 | x = c * m1 * y1 * k1; /* 1 0 0 0 */ |
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111 | g += 0.6784 * x; |
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112 | b += 0.9373 * x; |
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113 | x = c * m1 * y1 * k; /* 1 0 0 1 */ |
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114 | g += 0.0588 * x; |
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115 | b += 0.1412 * x; |
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116 | x = c * m1 * y * k1; /* 1 0 1 0 */ |
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117 | g += 0.6510 * x; |
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118 | b += 0.3137 * x; |
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119 | x = c * m1 * y * k; /* 1 0 1 1 */ |
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120 | g += 0.0745 * x; |
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121 | x = c * m * y1 * k1; /* 1 1 0 0 */ |
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122 | r += 0.1804 * x; |
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123 | g += 0.1922 * x; |
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124 | b += 0.5725 * x; |
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125 | x = c * m * y1 * k; /* 1 1 0 1 */ |
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126 | b += 0.0078 * x; |
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127 | x = c * m * y * k1; /* 1 1 1 0 */ |
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128 | r += 0.2118 * x; |
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129 | g += 0.2119 * x; |
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130 | b += 0.2235 * x; |
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131 | |||
132 | rgb[0] = CLAMP(r, 0, 1); |
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133 | rgb[1] = CLAMP(g, 0, 1); |
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134 | rgb[2] = CLAMP(b, 0, 1); |
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135 | #else |
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136 | rgb[0] = 1 - MIN(1, cmyk[0] + cmyk[3]); |
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137 | rgb[1] = 1 - MIN(1, cmyk[1] + cmyk[3]); |
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138 | rgb[2] = 1 - MIN(1, cmyk[2] + cmyk[3]); |
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139 | #endif |
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140 | } |
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141 | |||
142 | static void rgb_to_cmyk(fz_colorspace *cs, float *rgb, float *cmyk) |
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143 | { |
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144 | float c, m, y, k; |
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145 | c = 1 - rgb[0]; |
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146 | m = 1 - rgb[1]; |
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147 | y = 1 - rgb[2]; |
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148 | k = MIN(c, MIN(m, y)); |
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149 | cmyk[0] = c - k; |
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150 | cmyk[1] = m - k; |
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151 | cmyk[2] = y - k; |
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152 | cmyk[3] = k; |
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153 | } |
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154 | |||
155 | static fz_colorspace k_device_gray = { -1, "DeviceGray", 1, gray_to_rgb, rgb_to_gray }; |
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156 | static fz_colorspace k_device_rgb = { -1, "DeviceRGB", 3, rgb_to_rgb, rgb_to_rgb }; |
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157 | static fz_colorspace k_device_bgr = { -1, "DeviceRGB", 3, bgr_to_rgb, rgb_to_bgr }; |
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158 | static fz_colorspace k_device_cmyk = { -1, "DeviceCMYK", 4, cmyk_to_rgb, rgb_to_cmyk }; |
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159 | |||
160 | fz_colorspace *fz_device_gray = &k_device_gray; |
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161 | fz_colorspace *fz_device_rgb = &k_device_rgb; |
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162 | fz_colorspace *fz_device_bgr = &k_device_bgr; |
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163 | fz_colorspace *fz_device_cmyk = &k_device_cmyk; |
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164 | |||
165 | fz_colorspace * |
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166 | fz_find_device_colorspace(char *name) |
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167 | { |
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168 | if (!strcmp(name, "DeviceGray")) |
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169 | return fz_device_gray; |
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170 | if (!strcmp(name, "DeviceRGB")) |
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171 | return fz_device_rgb; |
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172 | if (!strcmp(name, "DeviceBGR")) |
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173 | return fz_device_bgr; |
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174 | if (!strcmp(name, "DeviceCMYK")) |
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175 | return fz_device_cmyk; |
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176 | fz_warn("unknown device colorspace: %s", name); |
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177 | return NULL; |
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178 | } |
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179 | |||
180 | /* Fast pixmap color conversions */ |
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181 | |||
182 | static void fast_gray_to_rgb(fz_pixmap *src, fz_pixmap *dst) |
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183 | { |
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184 | unsigned char *s = src->samples; |
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185 | unsigned char *d = dst->samples; |
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186 | int n = src->w * src->h; |
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187 | while (n--) |
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188 | { |
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189 | d[0] = s[0]; |
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190 | d[1] = s[0]; |
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191 | d[2] = s[0]; |
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192 | d[3] = s[1]; |
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193 | s += 2; |
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194 | d += 4; |
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195 | } |
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196 | } |
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197 | |||
198 | static void fast_gray_to_cmyk(fz_pixmap *src, fz_pixmap *dst) |
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199 | { |
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200 | unsigned char *s = src->samples; |
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201 | unsigned char *d = dst->samples; |
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202 | int n = src->w * src->h; |
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203 | while (n--) |
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204 | { |
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205 | d[0] = 0; |
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206 | d[1] = 0; |
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207 | d[2] = 0; |
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208 | d[3] = s[0]; |
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209 | d[4] = s[1]; |
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210 | s += 2; |
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211 | d += 5; |
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212 | } |
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213 | } |
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214 | |||
215 | static void fast_rgb_to_gray(fz_pixmap *src, fz_pixmap *dst) |
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216 | { |
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217 | unsigned char *s = src->samples; |
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218 | unsigned char *d = dst->samples; |
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219 | int n = src->w * src->h; |
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220 | while (n--) |
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221 | { |
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222 | d[0] = ((s[0]+1) * 77 + (s[1]+1) * 150 + (s[2]+1) * 28) >> 8; |
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223 | d[1] = s[3]; |
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224 | s += 4; |
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225 | d += 2; |
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226 | } |
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227 | } |
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228 | |||
229 | static void fast_bgr_to_gray(fz_pixmap *src, fz_pixmap *dst) |
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230 | { |
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231 | unsigned char *s = src->samples; |
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232 | unsigned char *d = dst->samples; |
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233 | int n = src->w * src->h; |
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234 | while (n--) |
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235 | { |
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236 | d[0] = ((s[0]+1) * 28 + (s[1]+1) * 150 + (s[2]+1) * 77) >> 8; |
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237 | d[1] = s[3]; |
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238 | s += 4; |
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239 | d += 2; |
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240 | } |
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241 | } |
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242 | |||
243 | static void fast_rgb_to_cmyk(fz_pixmap *src, fz_pixmap *dst) |
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244 | { |
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245 | unsigned char *s = src->samples; |
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246 | unsigned char *d = dst->samples; |
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247 | int n = src->w * src->h; |
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248 | while (n--) |
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249 | { |
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250 | unsigned char c = 255 - s[0]; |
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251 | unsigned char m = 255 - s[1]; |
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252 | unsigned char y = 255 - s[2]; |
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253 | unsigned char k = MIN(c, MIN(m, y)); |
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254 | d[0] = c - k; |
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255 | d[1] = m - k; |
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256 | d[2] = y - k; |
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257 | d[3] = k; |
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258 | d[4] = s[3]; |
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259 | s += 4; |
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260 | d += 5; |
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261 | } |
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262 | } |
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263 | |||
264 | static void fast_bgr_to_cmyk(fz_pixmap *src, fz_pixmap *dst) |
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265 | { |
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266 | unsigned char *s = src->samples; |
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267 | unsigned char *d = dst->samples; |
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268 | int n = src->w * src->h; |
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269 | while (n--) |
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270 | { |
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271 | unsigned char c = 255 - s[2]; |
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272 | unsigned char m = 255 - s[1]; |
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273 | unsigned char y = 255 - s[0]; |
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274 | unsigned char k = MIN(c, MIN(m, y)); |
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275 | d[0] = c - k; |
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276 | d[1] = m - k; |
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277 | d[2] = y - k; |
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278 | d[3] = k; |
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279 | d[4] = s[3]; |
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280 | s += 4; |
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281 | d += 5; |
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282 | } |
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283 | } |
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284 | |||
285 | static void fast_cmyk_to_gray(fz_pixmap *src, fz_pixmap *dst) |
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286 | { |
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287 | unsigned char *s = src->samples; |
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288 | unsigned char *d = dst->samples; |
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289 | int n = src->w * src->h; |
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290 | while (n--) |
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291 | { |
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292 | unsigned char c = fz_mul255(s[0], 77); |
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293 | unsigned char m = fz_mul255(s[1], 150); |
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294 | unsigned char y = fz_mul255(s[2], 28); |
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295 | d[0] = 255 - MIN(c + m + y + s[3], 255); |
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296 | d[1] = s[4]; |
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297 | s += 5; |
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298 | d += 2; |
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299 | } |
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300 | } |
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301 | |||
302 | static void fast_cmyk_to_rgb(fz_pixmap *src, fz_pixmap *dst) |
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303 | { |
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304 | unsigned char *s = src->samples; |
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305 | unsigned char *d = dst->samples; |
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306 | int n = src->w * src->h; |
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307 | while (n--) |
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308 | { |
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309 | #ifdef SLOWCMYK |
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310 | float cmyk[4], rgb[3]; |
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311 | cmyk[0] = s[0] / 255.0f; |
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312 | cmyk[1] = s[1] / 255.0f; |
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313 | cmyk[2] = s[2] / 255.0f; |
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314 | cmyk[3] = s[3] / 255.0f; |
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315 | cmyk_to_rgb(NULL, cmyk, rgb); |
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316 | d[0] = rgb[0] * 255; |
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317 | d[1] = rgb[1] * 255; |
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318 | d[2] = rgb[2] * 255; |
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319 | #else |
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320 | d[0] = 255 - MIN(s[0] + s[3], 255); |
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321 | d[1] = 255 - MIN(s[1] + s[3], 255); |
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322 | d[2] = 255 - MIN(s[2] + s[3], 255); |
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323 | #endif |
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324 | d[3] = s[4]; |
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325 | s += 5; |
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326 | d += 4; |
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327 | } |
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328 | } |
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329 | |||
330 | static void fast_cmyk_to_bgr(fz_pixmap *src, fz_pixmap *dst) |
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331 | { |
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332 | unsigned char *s = src->samples; |
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333 | unsigned char *d = dst->samples; |
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334 | int n = src->w * src->h; |
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335 | while (n--) |
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336 | { |
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337 | #ifdef SLOWCMYK |
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338 | float cmyk[4], rgb[3]; |
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339 | cmyk[0] = s[0] / 255.0f; |
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340 | cmyk[1] = s[1] / 255.0f; |
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341 | cmyk[2] = s[2] / 255.0f; |
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342 | cmyk[3] = s[3] / 255.0f; |
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343 | cmyk_to_rgb(NULL, cmyk, rgb); |
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344 | d[0] = rgb[2] * 255; |
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345 | d[1] = rgb[1] * 255; |
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346 | d[2] = rgb[0] * 255; |
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347 | #else |
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348 | d[0] = 255 - MIN(s[2] + s[3], 255); |
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349 | d[1] = 255 - MIN(s[1] + s[3], 255); |
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350 | d[2] = 255 - MIN(s[0] + s[3], 255); |
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351 | #endif |
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352 | d[3] = s[4]; |
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353 | s += 5; |
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354 | d += 4; |
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355 | } |
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356 | } |
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357 | |||
358 | static void fast_rgb_to_bgr(fz_pixmap *src, fz_pixmap *dst) |
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359 | { |
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360 | unsigned char *s = src->samples; |
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361 | unsigned char *d = dst->samples; |
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362 | int n = src->w * src->h; |
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363 | while (n--) |
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364 | { |
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365 | d[0] = s[2]; |
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366 | d[1] = s[1]; |
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367 | d[2] = s[0]; |
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368 | d[3] = s[3]; |
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369 | s += 4; |
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370 | d += 4; |
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371 | } |
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372 | } |
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373 | |||
374 | static void |
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375 | fz_std_conv_pixmap(fz_pixmap *src, fz_pixmap *dst) |
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376 | { |
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377 | float srcv[FZ_MAX_COLORS]; |
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378 | float dstv[FZ_MAX_COLORS]; |
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379 | int srcn, dstn; |
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380 | int y, x, k, i; |
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381 | |||
382 | fz_colorspace *ss = src->colorspace; |
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383 | fz_colorspace *ds = dst->colorspace; |
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384 | |||
385 | unsigned char *s = src->samples; |
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386 | unsigned char *d = dst->samples; |
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387 | |||
388 | assert(src->w == dst->w && src->h == dst->h); |
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389 | assert(src->n == ss->n + 1); |
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390 | assert(dst->n == ds->n + 1); |
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391 | |||
392 | srcn = ss->n; |
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393 | dstn = ds->n; |
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394 | |||
395 | /* Special case for Lab colorspace (scaling of components to float) */ |
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396 | if (!strcmp(ss->name, "Lab") && srcn == 3) |
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397 | { |
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398 | for (y = 0; y < src->h; y++) |
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399 | { |
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400 | for (x = 0; x < src->w; x++) |
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401 | { |
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402 | srcv[0] = *s++ / 255.0f * 100; |
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403 | srcv[1] = *s++ - 128; |
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404 | srcv[2] = *s++ - 128; |
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405 | |||
406 | fz_convert_color(ss, srcv, ds, dstv); |
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407 | |||
408 | for (k = 0; k < dstn; k++) |
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409 | *d++ = dstv[k] * 255; |
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410 | |||
411 | *d++ = *s++; |
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412 | } |
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413 | } |
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414 | } |
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415 | |||
416 | /* Brute-force for small images */ |
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417 | else if (src->w * src->h < 256) |
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418 | { |
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419 | for (y = 0; y < src->h; y++) |
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420 | { |
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421 | for (x = 0; x < src->w; x++) |
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422 | { |
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423 | for (k = 0; k < srcn; k++) |
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424 | srcv[k] = *s++ / 255.0f; |
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425 | |||
426 | fz_convert_color(ss, srcv, ds, dstv); |
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427 | |||
428 | for (k = 0; k < dstn; k++) |
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429 | *d++ = dstv[k] * 255; |
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430 | |||
431 | *d++ = *s++; |
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432 | } |
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433 | } |
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434 | } |
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435 | |||
436 | /* 1-d lookup table for separation and similar colorspaces */ |
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437 | else if (srcn == 1) |
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438 | { |
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439 | unsigned char lookup[FZ_MAX_COLORS * 256]; |
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440 | |||
441 | for (i = 0; i < 256; i++) |
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442 | { |
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443 | srcv[0] = i / 255.0f; |
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444 | fz_convert_color(ss, srcv, ds, dstv); |
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445 | for (k = 0; k < dstn; k++) |
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446 | lookup[i * dstn + k] = dstv[k] * 255; |
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447 | } |
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448 | |||
449 | for (y = 0; y < src->h; y++) |
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450 | { |
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451 | for (x = 0; x < src->w; x++) |
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452 | { |
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453 | i = *s++; |
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454 | for (k = 0; k < dstn; k++) |
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455 | *d++ = lookup[i * dstn + k]; |
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456 | *d++ = *s++; |
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457 | } |
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458 | } |
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459 | } |
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460 | |||
461 | /* Memoize colors using a hash table for the general case */ |
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462 | else |
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463 | { |
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464 | fz_hash_table *lookup; |
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465 | unsigned char *color; |
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466 | |||
467 | lookup = fz_new_hash_table(509, srcn); |
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468 | |||
469 | for (y = 0; y < src->h; y++) |
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470 | { |
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471 | for (x = 0; x < src->w; x++) |
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472 | { |
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473 | color = fz_hash_find(lookup, s); |
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474 | if (color) |
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475 | { |
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476 | memcpy(d, color, dstn); |
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477 | s += srcn; |
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478 | d += dstn; |
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479 | *d++ = *s++; |
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480 | } |
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481 | else |
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482 | { |
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483 | for (k = 0; k < srcn; k++) |
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484 | srcv[k] = *s++ / 255.0f; |
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485 | fz_convert_color(ss, srcv, ds, dstv); |
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486 | for (k = 0; k < dstn; k++) |
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487 | *d++ = dstv[k] * 255; |
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488 | |||
489 | fz_hash_insert(lookup, s - srcn, d - dstn); |
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490 | |||
491 | *d++ = *s++; |
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492 | } |
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493 | } |
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494 | } |
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495 | |||
496 | fz_free_hash(lookup); |
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497 | } |
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498 | } |
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499 | |||
500 | void |
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501 | fz_convert_pixmap(fz_pixmap *sp, fz_pixmap *dp) |
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502 | { |
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503 | fz_colorspace *ss = sp->colorspace; |
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504 | fz_colorspace *ds = dp->colorspace; |
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505 | |||
506 | assert(ss && ds); |
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507 | |||
508 | if (sp->mask) |
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509 | dp->mask = fz_keep_pixmap(sp->mask); |
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510 | dp->interpolate = sp->interpolate; |
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511 | |||
512 | if (ss == fz_device_gray) |
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513 | { |
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514 | if (ds == fz_device_rgb) fast_gray_to_rgb(sp, dp); |
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515 | else if (ds == fz_device_bgr) fast_gray_to_rgb(sp, dp); /* bgr == rgb here */ |
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516 | else if (ds == fz_device_cmyk) fast_gray_to_cmyk(sp, dp); |
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517 | else fz_std_conv_pixmap(sp, dp); |
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518 | } |
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519 | |||
520 | else if (ss == fz_device_rgb) |
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521 | { |
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522 | if (ds == fz_device_gray) fast_rgb_to_gray(sp, dp); |
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523 | else if (ds == fz_device_bgr) fast_rgb_to_bgr(sp, dp); |
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524 | else if (ds == fz_device_cmyk) fast_rgb_to_cmyk(sp, dp); |
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525 | else fz_std_conv_pixmap(sp, dp); |
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526 | } |
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527 | |||
528 | else if (ss == fz_device_bgr) |
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529 | { |
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530 | if (ds == fz_device_gray) fast_bgr_to_gray(sp, dp); |
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531 | else if (ds == fz_device_rgb) fast_rgb_to_bgr(sp, dp); /* bgr = rgb here */ |
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532 | else if (ds == fz_device_cmyk) fast_bgr_to_cmyk(sp, dp); |
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533 | else fz_std_conv_pixmap(sp, dp); |
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534 | } |
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535 | |||
536 | else if (ss == fz_device_cmyk) |
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537 | { |
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538 | if (ds == fz_device_gray) fast_cmyk_to_gray(sp, dp); |
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539 | else if (ds == fz_device_bgr) fast_cmyk_to_bgr(sp, dp); |
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540 | else if (ds == fz_device_rgb) fast_cmyk_to_rgb(sp, dp); |
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541 | else fz_std_conv_pixmap(sp, dp); |
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542 | } |
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543 | |||
544 | else fz_std_conv_pixmap(sp, dp); |
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545 | } |
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546 | |||
547 | /* Convert a single color */ |
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548 | |||
549 | static void |
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550 | fz_std_conv_color(fz_colorspace *srcs, float *srcv, fz_colorspace *dsts, float *dstv) |
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551 | { |
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552 | float rgb[3]; |
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553 | int i; |
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554 | |||
555 | if (srcs != dsts) |
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556 | { |
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557 | assert(srcs->to_rgb && dsts->from_rgb); |
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558 | srcs->to_rgb(srcs, srcv, rgb); |
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559 | dsts->from_rgb(dsts, rgb, dstv); |
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560 | for (i = 0; i < dsts->n; i++) |
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561 | dstv[i] = CLAMP(dstv[i], 0, 1); |
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562 | } |
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563 | else |
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564 | { |
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565 | for (i = 0; i < srcs->n; i++) |
||
566 | dstv[i] = srcv[i]; |
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567 | } |
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568 | } |
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569 | |||
570 | void |
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571 | fz_convert_color(fz_colorspace *ss, float *sv, fz_colorspace *ds, float *dv) |
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572 | { |
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573 | if (ss == fz_device_gray) |
||
574 | { |
||
575 | if ((ds == fz_device_rgb) || (ds == fz_device_bgr)) |
||
576 | { |
||
577 | dv[0] = sv[0]; |
||
578 | dv[1] = sv[0]; |
||
579 | dv[2] = sv[0]; |
||
580 | } |
||
581 | else if (ds == fz_device_cmyk) |
||
582 | { |
||
583 | dv[0] = 0; |
||
584 | dv[1] = 0; |
||
585 | dv[2] = 0; |
||
586 | dv[3] = sv[0]; |
||
587 | } |
||
588 | else |
||
589 | fz_std_conv_color(ss, sv, ds, dv); |
||
590 | } |
||
591 | |||
592 | else if (ss == fz_device_rgb) |
||
593 | { |
||
594 | if (ds == fz_device_gray) |
||
595 | { |
||
596 | dv[0] = sv[0] * 0.3f + sv[1] * 0.59f + sv[2] * 0.11f; |
||
597 | } |
||
598 | else if (ds == fz_device_bgr) |
||
599 | { |
||
600 | dv[0] = sv[2]; |
||
601 | dv[1] = sv[1]; |
||
602 | dv[2] = sv[0]; |
||
603 | } |
||
604 | else if (ds == fz_device_cmyk) |
||
605 | { |
||
606 | float c = 1 - sv[0]; |
||
607 | float m = 1 - sv[1]; |
||
608 | float y = 1 - sv[2]; |
||
609 | float k = MIN(c, MIN(m, y)); |
||
610 | dv[0] = c - k; |
||
611 | dv[1] = m - k; |
||
612 | dv[2] = y - k; |
||
613 | dv[3] = k; |
||
614 | } |
||
615 | else |
||
616 | fz_std_conv_color(ss, sv, ds, dv); |
||
617 | } |
||
618 | |||
619 | else if (ss == fz_device_bgr) |
||
620 | { |
||
621 | if (ds == fz_device_gray) |
||
622 | { |
||
623 | dv[0] = sv[0] * 0.11f + sv[1] * 0.59f + sv[2] * 0.3f; |
||
624 | } |
||
625 | else if (ds == fz_device_bgr) |
||
626 | { |
||
627 | dv[0] = sv[2]; |
||
628 | dv[1] = sv[1]; |
||
629 | dv[2] = sv[0]; |
||
630 | } |
||
631 | else if (ds == fz_device_cmyk) |
||
632 | { |
||
633 | float c = 1 - sv[2]; |
||
634 | float m = 1 - sv[1]; |
||
635 | float y = 1 - sv[0]; |
||
636 | float k = MIN(c, MIN(m, y)); |
||
637 | dv[0] = c - k; |
||
638 | dv[1] = m - k; |
||
639 | dv[2] = y - k; |
||
640 | dv[3] = k; |
||
641 | } |
||
642 | else |
||
643 | fz_std_conv_color(ss, sv, ds, dv); |
||
644 | } |
||
645 | |||
646 | else if (ss == fz_device_cmyk) |
||
647 | { |
||
648 | if (ds == fz_device_gray) |
||
649 | { |
||
650 | float c = sv[0] * 0.3f; |
||
651 | float m = sv[1] * 0.59f; |
||
652 | float y = sv[2] * 0.11f; |
||
653 | dv[0] = 1 - MIN(c + m + y + sv[3], 1); |
||
654 | } |
||
655 | else if (ds == fz_device_rgb) |
||
656 | { |
||
657 | #ifdef SLOWCMYK |
||
658 | cmyk_to_rgb(NULL, sv, dv); |
||
659 | #else |
||
660 | dv[0] = 1 - MIN(sv[0] + sv[3], 1); |
||
661 | dv[1] = 1 - MIN(sv[1] + sv[3], 1); |
||
662 | dv[2] = 1 - MIN(sv[2] + sv[3], 1); |
||
663 | #endif |
||
664 | } |
||
665 | else if (ds == fz_device_bgr) |
||
666 | { |
||
667 | #ifdef SLOWCMYK |
||
668 | float rgb[3]; |
||
669 | cmyk_to_rgb(NULL, sv, rgb); |
||
670 | dv[0] = rgb[2]; |
||
671 | dv[1] = rgb[1]; |
||
672 | dv[2] = rgb[0]; |
||
673 | #else |
||
674 | dv[0] = 1 - MIN(sv[2] + sv[3], 1); |
||
675 | dv[1] = 1 - MIN(sv[1] + sv[3], 1); |
||
676 | dv[2] = 1 - MIN(sv[0] + sv[3], 1); |
||
677 | #endif |
||
678 | } |
||
679 | else |
||
680 | fz_std_conv_color(ss, sv, ds, dv); |
||
681 | } |
||
682 | |||
683 | else |
||
684 | fz_std_conv_color(ss, sv, ds, dv); |
||
685 | }>>>>>>>>>>>>>>>>>>>>> |