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1 /* |
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2 * Portions Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Sun designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Sun in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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22 * CA 95054 USA or visit www.sun.com if you need additional information or |
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23 * have any questions. |
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24 */ |
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25 |
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26 /********************************************************************** |
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27 ********************************************************************** |
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28 ********************************************************************** |
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29 *** COPYRIGHT (c) Eastman Kodak Company, 1997 *** |
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30 *** As an unpublished work pursuant to Title 17 of the United *** |
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31 *** States Code. All rights reserved. *** |
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32 ********************************************************************** |
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33 ********************************************************************** |
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34 **********************************************************************/ |
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35 |
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36 package java.awt.image; |
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37 |
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38 import java.awt.Point; |
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39 import java.awt.Graphics2D; |
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40 import java.awt.color.*; |
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41 import sun.java2d.cmm.ColorTransform; |
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42 import sun.java2d.cmm.CMSManager; |
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43 import sun.java2d.cmm.ProfileDeferralMgr; |
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44 import sun.java2d.cmm.PCMM; |
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45 import java.awt.geom.Rectangle2D; |
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46 import java.awt.geom.Point2D; |
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47 import java.awt.RenderingHints; |
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48 |
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49 /** |
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50 * This class performs a pixel-by-pixel color conversion of the data in |
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51 * the source image. The resulting color values are scaled to the precision |
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52 * of the destination image. Color conversion can be specified |
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53 * via an array of ColorSpace objects or an array of ICC_Profile objects. |
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54 * <p> |
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55 * If the source is a BufferedImage with premultiplied alpha, the |
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56 * color components are divided by the alpha component before color conversion. |
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57 * If the destination is a BufferedImage with premultiplied alpha, the |
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58 * color components are multiplied by the alpha component after conversion. |
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59 * Rasters are treated as having no alpha channel, i.e. all bands are |
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60 * color bands. |
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61 * <p> |
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62 * If a RenderingHints object is specified in the constructor, the |
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63 * color rendering hint and the dithering hint may be used to control |
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64 * color conversion. |
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65 * <p> |
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66 * Note that Source and Destination may be the same object. |
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67 * <p> |
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68 * @see java.awt.RenderingHints#KEY_COLOR_RENDERING |
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69 * @see java.awt.RenderingHints#KEY_DITHERING |
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70 */ |
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71 public class ColorConvertOp implements BufferedImageOp, RasterOp { |
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72 ICC_Profile[] profileList; |
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73 ColorSpace[] CSList; |
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74 ColorTransform thisTransform, thisRasterTransform; |
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75 ICC_Profile thisSrcProfile, thisDestProfile; |
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76 RenderingHints hints; |
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77 boolean gotProfiles; |
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78 float[] srcMinVals, srcMaxVals, dstMinVals, dstMaxVals; |
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79 |
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80 /* the class initializer */ |
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81 static { |
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82 if (ProfileDeferralMgr.deferring) { |
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83 ProfileDeferralMgr.activateProfiles(); |
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84 } |
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85 } |
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86 |
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87 /** |
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88 * Constructs a new ColorConvertOp which will convert |
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89 * from a source color space to a destination color space. |
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90 * The RenderingHints argument may be null. |
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91 * This Op can be used only with BufferedImages, and will convert |
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92 * directly from the ColorSpace of the source image to that of the |
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93 * destination. The destination argument of the filter method |
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94 * cannot be specified as null. |
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95 * @param hints the <code>RenderingHints</code> object used to control |
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96 * the color conversion, or <code>null</code> |
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97 */ |
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98 public ColorConvertOp (RenderingHints hints) |
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99 { |
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100 profileList = new ICC_Profile [0]; /* 0 length list */ |
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101 this.hints = hints; |
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102 } |
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103 |
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104 /** |
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105 * Constructs a new ColorConvertOp from a ColorSpace object. |
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106 * The RenderingHints argument may be null. This |
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107 * Op can be used only with BufferedImages, and is primarily useful |
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108 * when the {@link #filter(BufferedImage, BufferedImage) filter} |
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109 * method is invoked with a destination argument of null. |
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110 * In that case, the ColorSpace defines the destination color space |
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111 * for the destination created by the filter method. Otherwise, the |
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112 * ColorSpace defines an intermediate space to which the source is |
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113 * converted before being converted to the destination space. |
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114 * @param cspace defines the destination <code>ColorSpace</code> or an |
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115 * intermediate <code>ColorSpace</code> |
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116 * @param hints the <code>RenderingHints</code> object used to control |
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117 * the color conversion, or <code>null</code> |
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118 * @throws NullPointerException if cspace is null |
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119 */ |
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120 public ColorConvertOp (ColorSpace cspace, RenderingHints hints) |
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121 { |
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122 if (cspace == null) { |
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123 throw new NullPointerException("ColorSpace cannot be null"); |
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124 } |
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125 if (cspace instanceof ICC_ColorSpace) { |
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126 profileList = new ICC_Profile [1]; /* 1 profile in the list */ |
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127 |
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128 profileList [0] = ((ICC_ColorSpace) cspace).getProfile(); |
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129 } |
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130 else { |
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131 CSList = new ColorSpace[1]; /* non-ICC case: 1 ColorSpace in list */ |
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132 CSList[0] = cspace; |
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133 } |
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134 this.hints = hints; |
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135 } |
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136 |
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137 |
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138 /** |
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139 * Constructs a new ColorConvertOp from two ColorSpace objects. |
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140 * The RenderingHints argument may be null. |
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141 * This Op is primarily useful for calling the filter method on |
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142 * Rasters, in which case the two ColorSpaces define the operation |
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143 * to be performed on the Rasters. In that case, the number of bands |
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144 * in the source Raster must match the number of components in |
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145 * srcCspace, and the number of bands in the destination Raster |
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146 * must match the number of components in dstCspace. For BufferedImages, |
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147 * the two ColorSpaces define intermediate spaces through which the |
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148 * source is converted before being converted to the destination space. |
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149 * @param srcCspace the source <code>ColorSpace</code> |
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150 * @param dstCspace the destination <code>ColorSpace</code> |
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151 * @param hints the <code>RenderingHints</code> object used to control |
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152 * the color conversion, or <code>null</code> |
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153 * @throws NullPointerException if either srcCspace or dstCspace is null |
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154 */ |
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155 public ColorConvertOp(ColorSpace srcCspace, ColorSpace dstCspace, |
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156 RenderingHints hints) |
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157 { |
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158 if ((srcCspace == null) || (dstCspace == null)) { |
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159 throw new NullPointerException("ColorSpaces cannot be null"); |
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160 } |
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161 if ((srcCspace instanceof ICC_ColorSpace) && |
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162 (dstCspace instanceof ICC_ColorSpace)) { |
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163 profileList = new ICC_Profile [2]; /* 2 profiles in the list */ |
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164 |
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165 profileList [0] = ((ICC_ColorSpace) srcCspace).getProfile(); |
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166 profileList [1] = ((ICC_ColorSpace) dstCspace).getProfile(); |
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167 |
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168 getMinMaxValsFromColorSpaces(srcCspace, dstCspace); |
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169 } else { |
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170 /* non-ICC case: 2 ColorSpaces in list */ |
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171 CSList = new ColorSpace[2]; |
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172 CSList[0] = srcCspace; |
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173 CSList[1] = dstCspace; |
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174 } |
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175 this.hints = hints; |
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176 } |
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177 |
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178 |
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179 /** |
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180 * Constructs a new ColorConvertOp from an array of ICC_Profiles. |
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181 * The RenderingHints argument may be null. |
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182 * The sequence of profiles may include profiles that represent color |
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183 * spaces, profiles that represent effects, etc. If the whole sequence |
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184 * does not represent a well-defined color conversion, an exception is |
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185 * thrown. |
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186 * <p>For BufferedImages, if the ColorSpace |
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187 * of the source BufferedImage does not match the requirements of the |
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188 * first profile in the array, |
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189 * the first conversion is to an appropriate ColorSpace. |
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190 * If the requirements of the last profile in the array are not met |
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191 * by the ColorSpace of the destination BufferedImage, |
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192 * the last conversion is to the destination's ColorSpace. |
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193 * <p>For Rasters, the number of bands in the source Raster must match |
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194 * the requirements of the first profile in the array, and the |
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195 * number of bands in the destination Raster must match the requirements |
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196 * of the last profile in the array. The array must have at least two |
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197 * elements or calling the filter method for Rasters will throw an |
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198 * IllegalArgumentException. |
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199 * @param profiles the array of <code>ICC_Profile</code> objects |
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200 * @param hints the <code>RenderingHints</code> object used to control |
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201 * the color conversion, or <code>null</code> |
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202 * @exception IllegalArgumentException when the profile sequence does not |
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203 * specify a well-defined color conversion |
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204 * @exception NullPointerException if profiles is null |
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205 */ |
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206 public ColorConvertOp (ICC_Profile[] profiles, RenderingHints hints) |
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207 { |
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208 if (profiles == null) { |
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209 throw new NullPointerException("Profiles cannot be null"); |
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210 } |
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211 gotProfiles = true; |
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212 profileList = new ICC_Profile[profiles.length]; |
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213 for (int i1 = 0; i1 < profiles.length; i1++) { |
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214 profileList[i1] = profiles[i1]; |
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215 } |
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216 this.hints = hints; |
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217 } |
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218 |
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219 |
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220 /** |
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221 * Returns the array of ICC_Profiles used to construct this ColorConvertOp. |
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222 * Returns null if the ColorConvertOp was not constructed from such an |
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223 * array. |
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224 * @return the array of <code>ICC_Profile</code> objects of this |
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225 * <code>ColorConvertOp</code>, or <code>null</code> if this |
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226 * <code>ColorConvertOp</code> was not constructed with an |
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227 * array of <code>ICC_Profile</code> objects. |
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228 */ |
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229 public final ICC_Profile[] getICC_Profiles() { |
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230 if (gotProfiles) { |
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231 ICC_Profile[] profiles = new ICC_Profile[profileList.length]; |
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232 for (int i1 = 0; i1 < profileList.length; i1++) { |
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233 profiles[i1] = profileList[i1]; |
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234 } |
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235 return profiles; |
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236 } |
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237 return null; |
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238 } |
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239 |
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240 /** |
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241 * ColorConverts the source BufferedImage. |
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242 * If the destination image is null, |
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243 * a BufferedImage will be created with an appropriate ColorModel. |
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244 * @param src the source <code>BufferedImage</code> to be converted |
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245 * @param dest the destination <code>BufferedImage</code>, |
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246 * or <code>null</code> |
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247 * @return <code>dest</code> color converted from <code>src</code> |
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248 * or a new, converted <code>BufferedImage</code> |
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249 * if <code>dest</code> is <code>null</code> |
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250 * @exception IllegalArgumentException if dest is null and this op was |
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251 * constructed using the constructor which takes only a |
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252 * RenderingHints argument, since the operation is ill defined. |
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253 */ |
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254 public final BufferedImage filter(BufferedImage src, BufferedImage dest) { |
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255 ColorSpace srcColorSpace, destColorSpace; |
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256 BufferedImage savdest = null; |
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257 |
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258 if (src.getColorModel() instanceof IndexColorModel) { |
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259 IndexColorModel icm = (IndexColorModel) src.getColorModel(); |
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260 src = icm.convertToIntDiscrete(src.getRaster(), true); |
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261 } |
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262 srcColorSpace = src.getColorModel().getColorSpace(); |
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263 if (dest != null) { |
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264 if (dest.getColorModel() instanceof IndexColorModel) { |
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265 savdest = dest; |
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266 dest = null; |
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267 destColorSpace = null; |
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268 } else { |
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269 destColorSpace = dest.getColorModel().getColorSpace(); |
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270 } |
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271 } else { |
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272 destColorSpace = null; |
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273 } |
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274 |
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275 if ((CSList != null) || |
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276 (!(srcColorSpace instanceof ICC_ColorSpace)) || |
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277 ((dest != null) && |
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278 (!(destColorSpace instanceof ICC_ColorSpace)))) { |
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279 /* non-ICC case */ |
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280 dest = nonICCBIFilter(src, srcColorSpace, dest, destColorSpace); |
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281 } else { |
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282 dest = ICCBIFilter(src, srcColorSpace, dest, destColorSpace); |
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283 } |
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284 |
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285 if (savdest != null) { |
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286 Graphics2D big = savdest.createGraphics(); |
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287 try { |
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288 big.drawImage(dest, 0, 0, null); |
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289 } finally { |
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290 big.dispose(); |
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291 } |
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292 return savdest; |
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293 } else { |
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294 return dest; |
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295 } |
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296 } |
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297 |
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298 private final BufferedImage ICCBIFilter(BufferedImage src, |
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299 ColorSpace srcColorSpace, |
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300 BufferedImage dest, |
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301 ColorSpace destColorSpace) { |
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302 int nProfiles = profileList.length; |
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303 ICC_Profile srcProfile = null, destProfile = null; |
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304 |
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305 srcProfile = ((ICC_ColorSpace) srcColorSpace).getProfile(); |
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306 |
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307 if (dest == null) { /* last profile in the list defines |
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308 the output color space */ |
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309 if (nProfiles == 0) { |
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310 throw new IllegalArgumentException( |
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311 "Destination ColorSpace is undefined"); |
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312 } |
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313 destProfile = profileList [nProfiles - 1]; |
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314 dest = createCompatibleDestImage(src, null); |
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315 } |
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316 else { |
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317 if (src.getHeight() != dest.getHeight() || |
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318 src.getWidth() != dest.getWidth()) { |
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319 throw new IllegalArgumentException( |
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320 "Width or height of BufferedImages do not match"); |
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321 } |
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322 destProfile = ((ICC_ColorSpace) destColorSpace).getProfile(); |
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323 } |
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324 |
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325 /* Checking if all profiles in the transform sequence are the same. |
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326 * If so, performing just copying the data. |
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327 */ |
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328 if (srcProfile == destProfile) { |
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329 boolean noTrans = true; |
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330 for (int i = 0; i < nProfiles; i++) { |
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331 if (srcProfile != profileList[i]) { |
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332 noTrans = false; |
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333 break; |
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334 } |
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335 } |
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336 if (noTrans) { |
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337 Graphics2D g = dest.createGraphics(); |
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338 try { |
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339 g.drawImage(src, 0, 0, null); |
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340 } finally { |
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341 g.dispose(); |
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342 } |
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343 |
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344 return dest; |
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345 } |
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346 } |
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347 |
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348 /* make a new transform if needed */ |
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349 if ((thisTransform == null) || (thisSrcProfile != srcProfile) || |
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350 (thisDestProfile != destProfile) ) { |
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351 updateBITransform(srcProfile, destProfile); |
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352 } |
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353 |
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354 /* color convert the image */ |
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355 thisTransform.colorConvert(src, dest); |
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356 |
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357 return dest; |
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358 } |
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359 |
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360 private void updateBITransform(ICC_Profile srcProfile, |
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361 ICC_Profile destProfile) { |
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362 ICC_Profile[] theProfiles; |
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363 int i1, nProfiles, nTransforms, whichTrans, renderState; |
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364 ColorTransform[] theTransforms; |
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365 boolean useSrc = false, useDest = false; |
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366 |
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367 nProfiles = profileList.length; |
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368 nTransforms = nProfiles; |
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369 if ((nProfiles == 0) || (srcProfile != profileList[0])) { |
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370 nTransforms += 1; |
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371 useSrc = true; |
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372 } |
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373 if ((nProfiles == 0) || (destProfile != profileList[nProfiles - 1]) || |
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374 (nTransforms < 2)) { |
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375 nTransforms += 1; |
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376 useDest = true; |
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377 } |
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378 |
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379 /* make the profile list */ |
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380 theProfiles = new ICC_Profile[nTransforms]; /* the list of profiles |
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381 for this Op */ |
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382 |
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383 int idx = 0; |
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384 if (useSrc) { |
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385 /* insert source as first profile */ |
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386 theProfiles[idx++] = srcProfile; |
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387 } |
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388 |
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389 for (i1 = 0; i1 < nProfiles; i1++) { |
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390 /* insert profiles defined in this Op */ |
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391 theProfiles[idx++] = profileList [i1]; |
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392 } |
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393 |
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394 if (useDest) { |
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395 /* insert dest as last profile */ |
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396 theProfiles[idx] = destProfile; |
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397 } |
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398 |
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399 /* make the transform list */ |
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400 theTransforms = new ColorTransform [nTransforms]; |
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401 |
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402 /* initialize transform get loop */ |
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403 if (theProfiles[0].getProfileClass() == ICC_Profile.CLASS_OUTPUT) { |
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404 /* if first profile is a printer |
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405 render as colorimetric */ |
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406 renderState = ICC_Profile.icRelativeColorimetric; |
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407 } |
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408 else { |
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409 renderState = ICC_Profile.icPerceptual; /* render any other |
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410 class perceptually */ |
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411 } |
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412 |
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413 whichTrans = ColorTransform.In; |
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414 |
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415 PCMM mdl = CMSManager.getModule(); |
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416 |
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417 /* get the transforms from each profile */ |
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418 for (i1 = 0; i1 < nTransforms; i1++) { |
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419 if (i1 == nTransforms -1) { /* last profile? */ |
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420 whichTrans = ColorTransform.Out; /* get output transform */ |
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421 } |
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422 else { /* check for abstract profile */ |
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423 if ((whichTrans == ColorTransform.Simulation) && |
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424 (theProfiles[i1].getProfileClass () == |
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425 ICC_Profile.CLASS_ABSTRACT)) { |
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426 renderState = ICC_Profile.icPerceptual; |
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427 whichTrans = ColorTransform.In; |
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428 } |
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429 } |
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430 |
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431 theTransforms[i1] = mdl.createTransform ( |
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432 theProfiles[i1], renderState, whichTrans); |
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433 |
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434 /* get this profile's rendering intent to select transform |
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435 from next profile */ |
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436 renderState = getRenderingIntent(theProfiles[i1]); |
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437 |
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438 /* "middle" profiles use simulation transform */ |
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439 whichTrans = ColorTransform.Simulation; |
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440 } |
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441 |
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442 /* make the net transform */ |
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443 thisTransform = mdl.createTransform(theTransforms); |
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444 |
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445 /* update corresponding source and dest profiles */ |
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446 thisSrcProfile = srcProfile; |
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447 thisDestProfile = destProfile; |
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448 } |
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449 |
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450 /** |
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451 * ColorConverts the image data in the source Raster. |
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452 * If the destination Raster is null, a new Raster will be created. |
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453 * The number of bands in the source and destination Rasters must |
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454 * meet the requirements explained above. The constructor used to |
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455 * create this ColorConvertOp must have provided enough information |
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456 * to define both source and destination color spaces. See above. |
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457 * Otherwise, an exception is thrown. |
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458 * @param src the source <code>Raster</code> to be converted |
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459 * @param dest the destination <code>WritableRaster</code>, |
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460 * or <code>null</code> |
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461 * @return <code>dest</code> color converted from <code>src</code> |
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462 * or a new, converted <code>WritableRaster</code> |
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463 * if <code>dest</code> is <code>null</code> |
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464 * @exception IllegalArgumentException if the number of source or |
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465 * destination bands is incorrect, the source or destination |
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466 * color spaces are undefined, or this op was constructed |
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467 * with one of the constructors that applies only to |
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468 * operations on BufferedImages. |
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469 */ |
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470 public final WritableRaster filter (Raster src, WritableRaster dest) { |
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471 |
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472 if (CSList != null) { |
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473 /* non-ICC case */ |
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474 return nonICCRasterFilter(src, dest); |
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475 } |
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476 int nProfiles = profileList.length; |
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477 if (nProfiles < 2) { |
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478 throw new IllegalArgumentException( |
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479 "Source or Destination ColorSpace is undefined"); |
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480 } |
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481 if (src.getNumBands() != profileList[0].getNumComponents()) { |
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482 throw new IllegalArgumentException( |
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483 "Numbers of source Raster bands and source color space " + |
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484 "components do not match"); |
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485 } |
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486 if (dest == null) { |
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487 dest = createCompatibleDestRaster(src); |
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488 } |
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489 else { |
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490 if (src.getHeight() != dest.getHeight() || |
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491 src.getWidth() != dest.getWidth()) { |
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492 throw new IllegalArgumentException( |
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493 "Width or height of Rasters do not match"); |
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494 } |
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495 if (dest.getNumBands() != |
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496 profileList[nProfiles-1].getNumComponents()) { |
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497 throw new IllegalArgumentException( |
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498 "Numbers of destination Raster bands and destination " + |
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499 "color space components do not match"); |
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500 } |
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501 } |
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502 |
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503 /* make a new transform if needed */ |
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504 if (thisRasterTransform == null) { |
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505 int i1, whichTrans, renderState; |
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506 ColorTransform[] theTransforms; |
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507 |
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508 /* make the transform list */ |
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509 theTransforms = new ColorTransform [nProfiles]; |
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510 |
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511 /* initialize transform get loop */ |
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512 if (profileList[0].getProfileClass() == ICC_Profile.CLASS_OUTPUT) { |
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513 /* if first profile is a printer |
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514 render as colorimetric */ |
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515 renderState = ICC_Profile.icRelativeColorimetric; |
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516 } |
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517 else { |
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518 renderState = ICC_Profile.icPerceptual; /* render any other |
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519 class perceptually */ |
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520 } |
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521 |
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522 whichTrans = ColorTransform.In; |
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523 |
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524 PCMM mdl = CMSManager.getModule(); |
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525 |
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526 /* get the transforms from each profile */ |
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527 for (i1 = 0; i1 < nProfiles; i1++) { |
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528 if (i1 == nProfiles -1) { /* last profile? */ |
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529 whichTrans = ColorTransform.Out; /* get output transform */ |
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530 } |
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531 else { /* check for abstract profile */ |
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532 if ((whichTrans == ColorTransform.Simulation) && |
|
533 (profileList[i1].getProfileClass () == |
|
534 ICC_Profile.CLASS_ABSTRACT)) { |
|
535 renderState = ICC_Profile.icPerceptual; |
|
536 whichTrans = ColorTransform.In; |
|
537 } |
|
538 } |
|
539 |
|
540 theTransforms[i1] = mdl.createTransform ( |
|
541 profileList[i1], renderState, whichTrans); |
|
542 |
|
543 /* get this profile's rendering intent to select transform |
|
544 from next profile */ |
|
545 renderState = getRenderingIntent(profileList[i1]); |
|
546 |
|
547 /* "middle" profiles use simulation transform */ |
|
548 whichTrans = ColorTransform.Simulation; |
|
549 } |
|
550 |
|
551 /* make the net transform */ |
|
552 thisRasterTransform = mdl.createTransform(theTransforms); |
|
553 } |
|
554 |
|
555 int srcTransferType = src.getTransferType(); |
|
556 int dstTransferType = dest.getTransferType(); |
|
557 if ((srcTransferType == DataBuffer.TYPE_FLOAT) || |
|
558 (srcTransferType == DataBuffer.TYPE_DOUBLE) || |
|
559 (dstTransferType == DataBuffer.TYPE_FLOAT) || |
|
560 (dstTransferType == DataBuffer.TYPE_DOUBLE)) { |
|
561 if (srcMinVals == null) { |
|
562 getMinMaxValsFromProfiles(profileList[0], |
|
563 profileList[nProfiles-1]); |
|
564 } |
|
565 /* color convert the raster */ |
|
566 thisRasterTransform.colorConvert(src, dest, |
|
567 srcMinVals, srcMaxVals, |
|
568 dstMinVals, dstMaxVals); |
|
569 } else { |
|
570 /* color convert the raster */ |
|
571 thisRasterTransform.colorConvert(src, dest); |
|
572 } |
|
573 |
|
574 |
|
575 return dest; |
|
576 } |
|
577 |
|
578 /** |
|
579 * Returns the bounding box of the destination, given this source. |
|
580 * Note that this will be the same as the the bounding box of the |
|
581 * source. |
|
582 * @param src the source <code>BufferedImage</code> |
|
583 * @return a <code>Rectangle2D</code> that is the bounding box |
|
584 * of the destination, given the specified <code>src</code> |
|
585 */ |
|
586 public final Rectangle2D getBounds2D (BufferedImage src) { |
|
587 return getBounds2D(src.getRaster()); |
|
588 } |
|
589 |
|
590 /** |
|
591 * Returns the bounding box of the destination, given this source. |
|
592 * Note that this will be the same as the the bounding box of the |
|
593 * source. |
|
594 * @param src the source <code>Raster</code> |
|
595 * @return a <code>Rectangle2D</code> that is the bounding box |
|
596 * of the destination, given the specified <code>src</code> |
|
597 */ |
|
598 public final Rectangle2D getBounds2D (Raster src) { |
|
599 /* return new Rectangle (src.getXOffset(), |
|
600 src.getYOffset(), |
|
601 src.getWidth(), src.getHeight()); */ |
|
602 return src.getBounds(); |
|
603 } |
|
604 |
|
605 /** |
|
606 * Creates a zeroed destination image with the correct size and number of |
|
607 * bands, given this source. |
|
608 * @param src Source image for the filter operation. |
|
609 * @param destCM ColorModel of the destination. If null, an |
|
610 * appropriate ColorModel will be used. |
|
611 * @return a <code>BufferedImage</code> with the correct size and |
|
612 * number of bands from the specified <code>src</code>. |
|
613 * @throws IllegalArgumentException if <code>destCM</code> is |
|
614 * <code>null</code> and this <code>ColorConvertOp</code> was |
|
615 * created without any <code>ICC_Profile</code> or |
|
616 * <code>ColorSpace</code> defined for the destination |
|
617 */ |
|
618 public BufferedImage createCompatibleDestImage (BufferedImage src, |
|
619 ColorModel destCM) { |
|
620 ColorSpace cs = null;; |
|
621 if (destCM == null) { |
|
622 if (CSList == null) { |
|
623 /* ICC case */ |
|
624 int nProfiles = profileList.length; |
|
625 if (nProfiles == 0) { |
|
626 throw new IllegalArgumentException( |
|
627 "Destination ColorSpace is undefined"); |
|
628 } |
|
629 ICC_Profile destProfile = profileList[nProfiles - 1]; |
|
630 cs = new ICC_ColorSpace(destProfile); |
|
631 } else { |
|
632 /* non-ICC case */ |
|
633 int nSpaces = CSList.length; |
|
634 cs = CSList[nSpaces - 1]; |
|
635 } |
|
636 } |
|
637 return createCompatibleDestImage(src, destCM, cs); |
|
638 } |
|
639 |
|
640 private BufferedImage createCompatibleDestImage(BufferedImage src, |
|
641 ColorModel destCM, |
|
642 ColorSpace destCS) { |
|
643 BufferedImage image; |
|
644 if (destCM == null) { |
|
645 ColorModel srcCM = src.getColorModel(); |
|
646 int nbands = destCS.getNumComponents(); |
|
647 boolean hasAlpha = srcCM.hasAlpha(); |
|
648 if (hasAlpha) { |
|
649 nbands += 1; |
|
650 } |
|
651 int[] nbits = new int[nbands]; |
|
652 for (int i = 0; i < nbands; i++) { |
|
653 nbits[i] = 8; |
|
654 } |
|
655 destCM = new ComponentColorModel(destCS, nbits, hasAlpha, |
|
656 srcCM.isAlphaPremultiplied(), |
|
657 srcCM.getTransparency(), |
|
658 DataBuffer.TYPE_BYTE); |
|
659 } |
|
660 int w = src.getWidth(); |
|
661 int h = src.getHeight(); |
|
662 image = new BufferedImage(destCM, |
|
663 destCM.createCompatibleWritableRaster(w, h), |
|
664 destCM.isAlphaPremultiplied(), null); |
|
665 return image; |
|
666 } |
|
667 |
|
668 |
|
669 /** |
|
670 * Creates a zeroed destination Raster with the correct size and number of |
|
671 * bands, given this source. |
|
672 * @param src the specified <code>Raster</code> |
|
673 * @return a <code>WritableRaster</code> with the correct size and number |
|
674 * of bands from the specified <code>src</code> |
|
675 * @throws IllegalArgumentException if this <code>ColorConvertOp</code> |
|
676 * was created without sufficient information to define the |
|
677 * <code>dst</code> and <code>src</code> color spaces |
|
678 */ |
|
679 public WritableRaster createCompatibleDestRaster (Raster src) { |
|
680 int ncomponents; |
|
681 |
|
682 if (CSList != null) { |
|
683 /* non-ICC case */ |
|
684 if (CSList.length != 2) { |
|
685 throw new IllegalArgumentException( |
|
686 "Destination ColorSpace is undefined"); |
|
687 } |
|
688 ncomponents = CSList[1].getNumComponents(); |
|
689 } else { |
|
690 /* ICC case */ |
|
691 int nProfiles = profileList.length; |
|
692 if (nProfiles < 2) { |
|
693 throw new IllegalArgumentException( |
|
694 "Destination ColorSpace is undefined"); |
|
695 } |
|
696 ncomponents = profileList[nProfiles-1].getNumComponents(); |
|
697 } |
|
698 |
|
699 WritableRaster dest = |
|
700 Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, |
|
701 src.getWidth(), |
|
702 src.getHeight(), |
|
703 ncomponents, |
|
704 new Point(src.getMinX(), src.getMinY())); |
|
705 return dest; |
|
706 } |
|
707 |
|
708 /** |
|
709 * Returns the location of the destination point given a |
|
710 * point in the source. If <code>dstPt</code> is non-null, |
|
711 * it will be used to hold the return value. Note that |
|
712 * for this class, the destination point will be the same |
|
713 * as the source point. |
|
714 * @param srcPt the specified source <code>Point2D</code> |
|
715 * @param dstPt the destination <code>Point2D</code> |
|
716 * @return <code>dstPt</code> after setting its location to be |
|
717 * the same as <code>srcPt</code> |
|
718 */ |
|
719 public final Point2D getPoint2D (Point2D srcPt, Point2D dstPt) { |
|
720 if (dstPt == null) { |
|
721 dstPt = new Point2D.Float(); |
|
722 } |
|
723 dstPt.setLocation(srcPt.getX(), srcPt.getY()); |
|
724 |
|
725 return dstPt; |
|
726 } |
|
727 |
|
728 |
|
729 /** |
|
730 * Returns the RenderingIntent from the specified ICC Profile. |
|
731 */ |
|
732 private int getRenderingIntent (ICC_Profile profile) { |
|
733 byte[] header = profile.getData(ICC_Profile.icSigHead); |
|
734 int index = ICC_Profile.icHdrRenderingIntent; |
|
735 return (((header[index] & 0xff) << 24) | |
|
736 ((header[index+1] & 0xff) << 16) | |
|
737 ((header[index+2] & 0xff) << 8) | |
|
738 (header[index+3] & 0xff)); |
|
739 } |
|
740 |
|
741 /** |
|
742 * Returns the rendering hints used by this op. |
|
743 * @return the <code>RenderingHints</code> object of this |
|
744 * <code>ColorConvertOp</code> |
|
745 */ |
|
746 public final RenderingHints getRenderingHints() { |
|
747 return hints; |
|
748 } |
|
749 |
|
750 private final BufferedImage nonICCBIFilter(BufferedImage src, |
|
751 ColorSpace srcColorSpace, |
|
752 BufferedImage dst, |
|
753 ColorSpace dstColorSpace) { |
|
754 |
|
755 int w = src.getWidth(); |
|
756 int h = src.getHeight(); |
|
757 ICC_ColorSpace ciespace = |
|
758 (ICC_ColorSpace) ColorSpace.getInstance(ColorSpace.CS_CIEXYZ); |
|
759 if (dst == null) { |
|
760 dst = createCompatibleDestImage(src, null); |
|
761 dstColorSpace = dst.getColorModel().getColorSpace(); |
|
762 } else { |
|
763 if ((h != dst.getHeight()) || (w != dst.getWidth())) { |
|
764 throw new IllegalArgumentException( |
|
765 "Width or height of BufferedImages do not match"); |
|
766 } |
|
767 } |
|
768 Raster srcRas = src.getRaster(); |
|
769 WritableRaster dstRas = dst.getRaster(); |
|
770 ColorModel srcCM = src.getColorModel(); |
|
771 ColorModel dstCM = dst.getColorModel(); |
|
772 int srcNumComp = srcCM.getNumColorComponents(); |
|
773 int dstNumComp = dstCM.getNumColorComponents(); |
|
774 boolean dstHasAlpha = dstCM.hasAlpha(); |
|
775 boolean needSrcAlpha = srcCM.hasAlpha() && dstHasAlpha; |
|
776 ColorSpace[] list; |
|
777 if ((CSList == null) && (profileList.length != 0)) { |
|
778 /* possible non-ICC src, some profiles, possible non-ICC dst */ |
|
779 boolean nonICCSrc, nonICCDst; |
|
780 ICC_Profile srcProfile, dstProfile; |
|
781 if (!(srcColorSpace instanceof ICC_ColorSpace)) { |
|
782 nonICCSrc = true; |
|
783 srcProfile = ciespace.getProfile(); |
|
784 } else { |
|
785 nonICCSrc = false; |
|
786 srcProfile = ((ICC_ColorSpace) srcColorSpace).getProfile(); |
|
787 } |
|
788 if (!(dstColorSpace instanceof ICC_ColorSpace)) { |
|
789 nonICCDst = true; |
|
790 dstProfile = ciespace.getProfile(); |
|
791 } else { |
|
792 nonICCDst = false; |
|
793 dstProfile = ((ICC_ColorSpace) dstColorSpace).getProfile(); |
|
794 } |
|
795 /* make a new transform if needed */ |
|
796 if ((thisTransform == null) || (thisSrcProfile != srcProfile) || |
|
797 (thisDestProfile != dstProfile) ) { |
|
798 updateBITransform(srcProfile, dstProfile); |
|
799 } |
|
800 // process per scanline |
|
801 float maxNum = 65535.0f; // use 16-bit precision in CMM |
|
802 ColorSpace cs; |
|
803 int iccSrcNumComp; |
|
804 if (nonICCSrc) { |
|
805 cs = ciespace; |
|
806 iccSrcNumComp = 3; |
|
807 } else { |
|
808 cs = srcColorSpace; |
|
809 iccSrcNumComp = srcNumComp; |
|
810 } |
|
811 float[] srcMinVal = new float[iccSrcNumComp]; |
|
812 float[] srcInvDiffMinMax = new float[iccSrcNumComp]; |
|
813 for (int i = 0; i < srcNumComp; i++) { |
|
814 srcMinVal[i] = cs.getMinValue(i); |
|
815 srcInvDiffMinMax[i] = maxNum / (cs.getMaxValue(i) - srcMinVal[i]); |
|
816 } |
|
817 int iccDstNumComp; |
|
818 if (nonICCDst) { |
|
819 cs = ciespace; |
|
820 iccDstNumComp = 3; |
|
821 } else { |
|
822 cs = dstColorSpace; |
|
823 iccDstNumComp = dstNumComp; |
|
824 } |
|
825 float[] dstMinVal = new float[iccDstNumComp]; |
|
826 float[] dstDiffMinMax = new float[iccDstNumComp]; |
|
827 for (int i = 0; i < dstNumComp; i++) { |
|
828 dstMinVal[i] = cs.getMinValue(i); |
|
829 dstDiffMinMax[i] = (cs.getMaxValue(i) - dstMinVal[i]) / maxNum; |
|
830 } |
|
831 float[] dstColor; |
|
832 if (dstHasAlpha) { |
|
833 int size = ((dstNumComp + 1) > 3) ? (dstNumComp + 1) : 3; |
|
834 dstColor = new float[size]; |
|
835 } else { |
|
836 int size = (dstNumComp > 3) ? dstNumComp : 3; |
|
837 dstColor = new float[size]; |
|
838 } |
|
839 short[] srcLine = new short[w * iccSrcNumComp]; |
|
840 short[] dstLine = new short[w * iccDstNumComp]; |
|
841 Object pixel; |
|
842 float[] color; |
|
843 float[] alpha = null; |
|
844 if (needSrcAlpha) { |
|
845 alpha = new float[w]; |
|
846 } |
|
847 int idx; |
|
848 // process each scanline |
|
849 for (int y = 0; y < h; y++) { |
|
850 // convert src scanline |
|
851 pixel = null; |
|
852 color = null; |
|
853 idx = 0; |
|
854 for (int x = 0; x < w; x++) { |
|
855 pixel = srcRas.getDataElements(x, y, pixel); |
|
856 color = srcCM.getNormalizedComponents(pixel, color, 0); |
|
857 if (needSrcAlpha) { |
|
858 alpha[x] = color[srcNumComp]; |
|
859 } |
|
860 if (nonICCSrc) { |
|
861 color = srcColorSpace.toCIEXYZ(color); |
|
862 } |
|
863 for (int i = 0; i < iccSrcNumComp; i++) { |
|
864 srcLine[idx++] = (short) |
|
865 ((color[i] - srcMinVal[i]) * srcInvDiffMinMax[i] + |
|
866 0.5f); |
|
867 } |
|
868 } |
|
869 // color convert srcLine to dstLine |
|
870 thisTransform.colorConvert(srcLine, dstLine); |
|
871 // convert dst scanline |
|
872 pixel = null; |
|
873 idx = 0; |
|
874 for (int x = 0; x < w; x++) { |
|
875 for (int i = 0; i < iccDstNumComp; i++) { |
|
876 dstColor[i] = ((float) (dstLine[idx++] & 0xffff)) * |
|
877 dstDiffMinMax[i] + dstMinVal[i]; |
|
878 } |
|
879 if (nonICCDst) { |
|
880 color = srcColorSpace.fromCIEXYZ(dstColor); |
|
881 for (int i = 0; i < dstNumComp; i++) { |
|
882 dstColor[i] = color[i]; |
|
883 } |
|
884 } |
|
885 if (needSrcAlpha) { |
|
886 dstColor[dstNumComp] = alpha[x]; |
|
887 } else if (dstHasAlpha) { |
|
888 dstColor[dstNumComp] = 1.0f; |
|
889 } |
|
890 pixel = dstCM.getDataElements(dstColor, 0, pixel); |
|
891 dstRas.setDataElements(x, y, pixel); |
|
892 } |
|
893 } |
|
894 } else { |
|
895 /* possible non-ICC src, possible CSList, possible non-ICC dst */ |
|
896 // process per pixel |
|
897 int numCS; |
|
898 if (CSList == null) { |
|
899 numCS = 0; |
|
900 } else { |
|
901 numCS = CSList.length; |
|
902 } |
|
903 float[] dstColor; |
|
904 if (dstHasAlpha) { |
|
905 dstColor = new float[dstNumComp + 1]; |
|
906 } else { |
|
907 dstColor = new float[dstNumComp]; |
|
908 } |
|
909 Object spixel = null; |
|
910 Object dpixel = null; |
|
911 float[] color = null; |
|
912 float[] tmpColor; |
|
913 // process each pixel |
|
914 for (int y = 0; y < h; y++) { |
|
915 for (int x = 0; x < w; x++) { |
|
916 spixel = srcRas.getDataElements(x, y, spixel); |
|
917 color = srcCM.getNormalizedComponents(spixel, color, 0); |
|
918 tmpColor = srcColorSpace.toCIEXYZ(color); |
|
919 for (int i = 0; i < numCS; i++) { |
|
920 tmpColor = CSList[i].fromCIEXYZ(tmpColor); |
|
921 tmpColor = CSList[i].toCIEXYZ(tmpColor); |
|
922 } |
|
923 tmpColor = dstColorSpace.fromCIEXYZ(tmpColor); |
|
924 for (int i = 0; i < dstNumComp; i++) { |
|
925 dstColor[i] = tmpColor[i]; |
|
926 } |
|
927 if (needSrcAlpha) { |
|
928 dstColor[dstNumComp] = color[srcNumComp]; |
|
929 } else if (dstHasAlpha) { |
|
930 dstColor[dstNumComp] = 1.0f; |
|
931 } |
|
932 dpixel = dstCM.getDataElements(dstColor, 0, dpixel); |
|
933 dstRas.setDataElements(x, y, dpixel); |
|
934 |
|
935 } |
|
936 } |
|
937 } |
|
938 |
|
939 return dst; |
|
940 } |
|
941 |
|
942 /* color convert a Raster - handles byte, ushort, int, short, float, |
|
943 or double transferTypes */ |
|
944 private final WritableRaster nonICCRasterFilter(Raster src, |
|
945 WritableRaster dst) { |
|
946 |
|
947 if (CSList.length != 2) { |
|
948 throw new IllegalArgumentException( |
|
949 "Destination ColorSpace is undefined"); |
|
950 } |
|
951 if (src.getNumBands() != CSList[0].getNumComponents()) { |
|
952 throw new IllegalArgumentException( |
|
953 "Numbers of source Raster bands and source color space " + |
|
954 "components do not match"); |
|
955 } |
|
956 if (dst == null) { |
|
957 dst = createCompatibleDestRaster(src); |
|
958 } else { |
|
959 if (src.getHeight() != dst.getHeight() || |
|
960 src.getWidth() != dst.getWidth()) { |
|
961 throw new IllegalArgumentException( |
|
962 "Width or height of Rasters do not match"); |
|
963 } |
|
964 if (dst.getNumBands() != CSList[1].getNumComponents()) { |
|
965 throw new IllegalArgumentException( |
|
966 "Numbers of destination Raster bands and destination " + |
|
967 "color space components do not match"); |
|
968 } |
|
969 } |
|
970 |
|
971 if (srcMinVals == null) { |
|
972 getMinMaxValsFromColorSpaces(CSList[0], CSList[1]); |
|
973 } |
|
974 |
|
975 SampleModel srcSM = src.getSampleModel(); |
|
976 SampleModel dstSM = dst.getSampleModel(); |
|
977 boolean srcIsFloat, dstIsFloat; |
|
978 int srcTransferType = src.getTransferType(); |
|
979 int dstTransferType = dst.getTransferType(); |
|
980 if ((srcTransferType == DataBuffer.TYPE_FLOAT) || |
|
981 (srcTransferType == DataBuffer.TYPE_DOUBLE)) { |
|
982 srcIsFloat = true; |
|
983 } else { |
|
984 srcIsFloat = false; |
|
985 } |
|
986 if ((dstTransferType == DataBuffer.TYPE_FLOAT) || |
|
987 (dstTransferType == DataBuffer.TYPE_DOUBLE)) { |
|
988 dstIsFloat = true; |
|
989 } else { |
|
990 dstIsFloat = false; |
|
991 } |
|
992 int w = src.getWidth(); |
|
993 int h = src.getHeight(); |
|
994 int srcNumBands = src.getNumBands(); |
|
995 int dstNumBands = dst.getNumBands(); |
|
996 float[] srcScaleFactor = null; |
|
997 float[] dstScaleFactor = null; |
|
998 if (!srcIsFloat) { |
|
999 srcScaleFactor = new float[srcNumBands]; |
|
1000 for (int i = 0; i < srcNumBands; i++) { |
|
1001 if (srcTransferType == DataBuffer.TYPE_SHORT) { |
|
1002 srcScaleFactor[i] = (srcMaxVals[i] - srcMinVals[i]) / |
|
1003 32767.0f; |
|
1004 } else { |
|
1005 srcScaleFactor[i] = (srcMaxVals[i] - srcMinVals[i]) / |
|
1006 ((float) ((1 << srcSM.getSampleSize(i)) - 1)); |
|
1007 } |
|
1008 } |
|
1009 } |
|
1010 if (!dstIsFloat) { |
|
1011 dstScaleFactor = new float[dstNumBands]; |
|
1012 for (int i = 0; i < dstNumBands; i++) { |
|
1013 if (dstTransferType == DataBuffer.TYPE_SHORT) { |
|
1014 dstScaleFactor[i] = 32767.0f / |
|
1015 (dstMaxVals[i] - dstMinVals[i]); |
|
1016 } else { |
|
1017 dstScaleFactor[i] = |
|
1018 ((float) ((1 << dstSM.getSampleSize(i)) - 1)) / |
|
1019 (dstMaxVals[i] - dstMinVals[i]); |
|
1020 } |
|
1021 } |
|
1022 } |
|
1023 int ys = src.getMinY(); |
|
1024 int yd = dst.getMinY(); |
|
1025 int xs, xd; |
|
1026 float sample; |
|
1027 float[] color = new float[srcNumBands]; |
|
1028 float[] tmpColor; |
|
1029 ColorSpace srcColorSpace = CSList[0]; |
|
1030 ColorSpace dstColorSpace = CSList[1]; |
|
1031 // process each pixel |
|
1032 for (int y = 0; y < h; y++, ys++, yd++) { |
|
1033 // get src scanline |
|
1034 xs = src.getMinX(); |
|
1035 xd = dst.getMinX(); |
|
1036 for (int x = 0; x < w; x++, xs++, xd++) { |
|
1037 for (int i = 0; i < srcNumBands; i++) { |
|
1038 sample = src.getSampleFloat(xs, ys, i); |
|
1039 if (!srcIsFloat) { |
|
1040 sample = sample * srcScaleFactor[i] + srcMinVals[i]; |
|
1041 } |
|
1042 color[i] = sample; |
|
1043 } |
|
1044 tmpColor = srcColorSpace.toCIEXYZ(color); |
|
1045 tmpColor = dstColorSpace.fromCIEXYZ(tmpColor); |
|
1046 for (int i = 0; i < dstNumBands; i++) { |
|
1047 sample = tmpColor[i]; |
|
1048 if (!dstIsFloat) { |
|
1049 sample = (sample - dstMinVals[i]) * dstScaleFactor[i]; |
|
1050 } |
|
1051 dst.setSample(xd, yd, i, sample); |
|
1052 } |
|
1053 } |
|
1054 } |
|
1055 return dst; |
|
1056 } |
|
1057 |
|
1058 private void getMinMaxValsFromProfiles(ICC_Profile srcProfile, |
|
1059 ICC_Profile dstProfile) { |
|
1060 int type = srcProfile.getColorSpaceType(); |
|
1061 int nc = srcProfile.getNumComponents(); |
|
1062 srcMinVals = new float[nc]; |
|
1063 srcMaxVals = new float[nc]; |
|
1064 setMinMax(type, nc, srcMinVals, srcMaxVals); |
|
1065 type = dstProfile.getColorSpaceType(); |
|
1066 nc = dstProfile.getNumComponents(); |
|
1067 dstMinVals = new float[nc]; |
|
1068 dstMaxVals = new float[nc]; |
|
1069 setMinMax(type, nc, dstMinVals, dstMaxVals); |
|
1070 } |
|
1071 |
|
1072 private void setMinMax(int type, int nc, float[] minVals, float[] maxVals) { |
|
1073 if (type == ColorSpace.TYPE_Lab) { |
|
1074 minVals[0] = 0.0f; // L |
|
1075 maxVals[0] = 100.0f; |
|
1076 minVals[1] = -128.0f; // a |
|
1077 maxVals[1] = 127.0f; |
|
1078 minVals[2] = -128.0f; // b |
|
1079 maxVals[2] = 127.0f; |
|
1080 } else if (type == ColorSpace.TYPE_XYZ) { |
|
1081 minVals[0] = minVals[1] = minVals[2] = 0.0f; // X, Y, Z |
|
1082 maxVals[0] = maxVals[1] = maxVals[2] = 1.0f + (32767.0f/ 32768.0f); |
|
1083 } else { |
|
1084 for (int i = 0; i < nc; i++) { |
|
1085 minVals[i] = 0.0f; |
|
1086 maxVals[i] = 1.0f; |
|
1087 } |
|
1088 } |
|
1089 } |
|
1090 |
|
1091 private void getMinMaxValsFromColorSpaces(ColorSpace srcCspace, |
|
1092 ColorSpace dstCspace) { |
|
1093 int nc = srcCspace.getNumComponents(); |
|
1094 srcMinVals = new float[nc]; |
|
1095 srcMaxVals = new float[nc]; |
|
1096 for (int i = 0; i < nc; i++) { |
|
1097 srcMinVals[i] = srcCspace.getMinValue(i); |
|
1098 srcMaxVals[i] = srcCspace.getMaxValue(i); |
|
1099 } |
|
1100 nc = dstCspace.getNumComponents(); |
|
1101 dstMinVals = new float[nc]; |
|
1102 dstMaxVals = new float[nc]; |
|
1103 for (int i = 0; i < nc; i++) { |
|
1104 dstMinVals[i] = dstCspace.getMinValue(i); |
|
1105 dstMaxVals[i] = dstCspace.getMaxValue(i); |
|
1106 } |
|
1107 } |
|
1108 |
|
1109 } |