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1 /* |
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2 * Copyright (c) 2005, 2015, Oracle and/or its affiliates. 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. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 package com.sun.imageio.plugins.tiff; |
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26 |
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27 import java.util.Locale; |
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28 import javax.imageio.ImageWriteParam; |
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29 |
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30 /** |
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31 * A subclass of {@link ImageWriteParam ImageWriteParam} |
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32 * allowing control over the TIFF writing process. The set of innately |
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33 * supported compression types is listed in the following table: |
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34 * |
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35 * <table border=1> |
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36 * <caption><b>Supported Compression Types</b></caption> |
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37 * <tr><th>Compression Type</th> <th>Description</th> <th>Reference</th></tr> |
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38 * <tr> |
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39 * <td>CCITT RLE</td> |
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40 * <td>Modified Huffman compression</td> |
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41 * <td>TIFF 6.0 Specification, Section 10</td> |
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42 * </tr> |
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43 * <tr> |
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44 * <td>CCITT T.4</td> |
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45 * <td>CCITT T.4 bilevel encoding/Group 3 facsimile compression</td> |
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46 * <td>TIFF 6.0 Specification, Section 11</td> |
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47 * </tr> |
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48 * <tr> |
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49 * <td>CCITT T.6</td> |
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50 * <td>CCITT T.6 bilevel encoding/Group 4 facsimile compression</td> |
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51 * <td>TIFF 6.0 Specification, Section 11</td></tr> |
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52 * <tr> |
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53 * <td>LZW</td> |
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54 * <td>LZW compression</td> |
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55 * <td>TIFF 6.0 Specification, Section 13</td></tr> |
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56 * <tr> |
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57 * <td>JPEG</td> |
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58 * <td>"New" JPEG-in-TIFF compression</td> |
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59 * <td><a href="ftp://ftp.sgi.com/graphics/tiff/TTN2.draft.txt">TIFF |
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60 * Technical Note #2</a></td> |
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61 * </tr> |
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62 * <tr> |
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63 * <td>ZLib</td> |
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64 * <td>"Deflate/Inflate" compression (see note following this table)</td> |
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65 * <td><a href="http://partners.adobe.com/asn/developer/pdfs/tn/TIFFphotoshop.pdf"> |
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66 * Adobe Photoshop® TIFF Technical Notes</a> (PDF)</td> |
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67 * </tr> |
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68 * <tr> |
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69 * <td>PackBits</td> |
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70 * <td>Byte-oriented, run length compression</td> |
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71 * <td>TIFF 6.0 Specification, Section 9</td> |
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72 * </tr> |
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73 * <tr> |
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74 * <td>Deflate</td> |
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75 * <td>"Zip-in-TIFF" compression (see note following this table)</td> |
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76 * <td><a href="http://www.isi.edu/in-notes/rfc1950.txt"> |
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77 * ZLIB Compressed Data Format Specification</a>, |
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78 * <a href="http://www.isi.edu/in-notes/rfc1951.txt"> |
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79 * DEFLATE Compressed Data Format Specification</a></td> |
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80 * </tr> |
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81 * <tr> |
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82 * <td>Exif JPEG</td> |
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83 * <td>Exif-specific JPEG compression (see note following this table)</td> |
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84 * <td><a href="http://www.exif.org/Exif2-2.PDF">Exif 2.2 Specification</a> |
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85 * (PDF), section 4.5.5, "Basic Structure of Thumbnail Data"</td> |
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86 * </table> |
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87 * |
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88 * <p> |
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89 * Old-style JPEG compression as described in section 22 of the TIFF 6.0 |
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90 * Specification is <i>not</i> supported. |
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91 * </p> |
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92 * |
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93 * <p> The CCITT compression types are applicable to bilevel (1-bit) |
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94 * images only. The JPEG compression type is applicable to byte |
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95 * grayscale (1-band) and RGB (3-band) images only.</p> |
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96 * |
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97 * <p> |
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98 * ZLib and Deflate compression are identical except for the value of the |
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99 * TIFF Compression field: for ZLib the Compression field has value 8 |
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100 * whereas for Deflate it has value 32946 (0x80b2). In both cases each |
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101 * image segment (strip or tile) is written as a single complete zlib data |
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102 * stream. |
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103 * </p> |
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104 * |
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105 * <p> |
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106 * "Exif JPEG" is a compression type used when writing the contents of an |
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107 * APP1 Exif marker segment for inclusion in a JPEG native image metadata |
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108 * tree. The contents appended to the output when this compression type is |
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109 * used are a function of whether an empty or non-empty image is written. |
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110 * If the image is empty, then a TIFF IFD adhering to the specification of |
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111 * a compressed Exif primary IFD is appended. If the image is non-empty, |
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112 * then a complete IFD and image adhering to the specification of a |
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113 * compressed Exif thumbnail IFD and image are appended. Note that the |
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114 * data of the empty image may <i>not</i> later be appended using the pixel |
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115 * replacement capability of the TIFF writer. |
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116 * </p> |
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117 * |
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118 * <p> If ZLib/Deflate or JPEG compression is used, the compression quality |
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119 * may be set. For ZLib/Deflate the supplied floating point quality value is |
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120 * rescaled to the range <tt>[1, 9]</tt> and truncated to an integer |
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121 * to derive the Deflate compression level. For JPEG the floating point |
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122 * quality value is passed directly to the JPEG writer plug-in which |
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123 * interprets it in the usual way.</p> |
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124 * |
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125 * <p> The <code>canWriteTiles</code> and |
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126 * <code>canWriteCompressed</code> methods will return |
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127 * <code>true</code>; the <code>canOffsetTiles</code> and |
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128 * <code>canWriteProgressive</code> methods will return |
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129 * <code>false</code>.</p> |
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130 * |
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131 * <p> If tiles are being written, then each of their dimensions will be |
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132 * rounded to the nearest multiple of 16 per the TIFF specification. If |
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133 * JPEG-in-TIFF compression is being used, and tiles are being written |
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134 * each tile dimension will be rounded to the nearest multiple of 8 times |
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135 * the JPEG minimum coded unit (MCU) in that dimension. If JPEG-in-TIFF |
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136 * compression is being used and strips are being written, the number of |
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137 * rows per strip is rounded to a multiple of 8 times the maximum MCU over |
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138 * both dimensions.</p> |
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139 */ |
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140 public class TIFFImageWriteParam extends ImageWriteParam { |
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141 |
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142 /** |
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143 * Constructs a <code>TIFFImageWriteParam</code> instance |
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144 * for a given <code>Locale</code>. |
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145 * |
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146 * @param locale the <code>Locale</code> for which messages |
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147 * should be localized. |
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148 */ |
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149 public TIFFImageWriteParam(Locale locale) { |
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150 super(locale); |
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151 this.canWriteCompressed = true; |
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152 this.canWriteTiles = true; |
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153 this.compressionTypes = TIFFImageWriter.TIFFCompressionTypes; |
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154 }; |
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155 } |