Mercurial > hg > digilib-old
annotate servlet/src/digilib/image/DocuImage.java @ 286:07bb7d594477 Root_gen2
Servlet version 1.22b1
- more fast searching (hopefully all working now)
- some simple synchronisation
- some reshuffling of methods to eliminate cruft
author | robcast |
---|---|
date | Fri, 15 Oct 2004 17:00:15 +0200 |
parents | d5fe845db95f |
children | 03ff7238c9d4 |
rev | line source |
---|---|
1 | 1 /* DocuImage -- General image interface class |
2 | |
3 Digital Image Library servlet components | |
4 | |
85 | 5 Copyright (C) 2001, 2002, 2003 Robert Casties (robcast@mail.berlios.de) |
1 | 6 |
7 This program is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
9 Free Software Foundation; either version 2 of the License, or (at your | |
10 option) any later version. | |
11 | |
12 Please read license.txt for the full details. A copy of the GPL | |
13 may be found at http://www.gnu.org/copyleft/lgpl.html | |
14 | |
15 You should have received a copy of the GNU General Public License | |
16 along with this program; if not, write to the Free Software | |
149 | 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1 | 18 |
19 */ | |
20 | |
21 package digilib.image; | |
22 | |
85 | 23 import java.awt.Rectangle; |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
24 import java.io.OutputStream; |
73 | 25 |
159 | 26 import digilib.io.ImageFile; |
73 | 27 import digilib.io.FileOpException; |
28 | |
29 /** The basic class for the representation of a digilib image. | |
30 * | |
31 * The actual image object is hidden in the class, only methods for loading, | |
32 * manipulation, and saving are exported. This strategy enables implementations | |
33 * using different toolkits that rely on different image base classes (like | |
34 * JIMI, Java2D and JAI). | |
35 */ | |
1 | 36 public interface DocuImage { |
37 | |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
38 /** Loads an image file into the Object. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
39 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
40 * @param f Image File. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
41 * @throws FileOpException Exception thrown if any error occurs. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
42 */ |
159 | 43 public void loadImage(ImageFile f) throws FileOpException; |
1 | 44 |
85 | 45 /** This DocuImage support the loadSubImage operation. |
46 * | |
47 * @return boolean | |
48 */ | |
49 public boolean isSubimageSupported(); | |
50 | |
51 /** Load only a subsampled region of the image file. | |
52 * | |
53 * @param f | |
54 * @param region | |
55 * @param subsample | |
56 * @throws FileOpException | |
57 */ | |
159 | 58 public void loadSubimage(ImageFile f, Rectangle region, int subsample) |
85 | 59 throws FileOpException; |
60 | |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
61 /** Writes the current image to a ServletResponse. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
62 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
63 * The image is encoded to the mime-type <code>mt</code> and sent to the output |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
64 * stream of the <code>ServletResponse</code> <code>res</code>. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
65 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
66 * Currently only mime-types "image/jpeg" and "image/png" are supported. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
67 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
68 * @param mt mime-type of the image to be sent. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
69 * @param res ServletResponse where the image is sent. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
70 * @throws FileOpException Exception thrown on any error. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
71 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
72 public void writeImage(String mt, OutputStream ostream) |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
73 throws FileOpException; |
1 | 74 |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
75 /** The width of the current image in pixel. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
76 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
77 * @return Image width in pixels. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
78 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
79 public int getWidth(); |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
80 |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
81 /** The height of the current image in pixel. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
82 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
83 * @return Image height in pixels. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
84 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
85 public int getHeight(); |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
86 |
86 | 87 /** The mime-type of the current image. |
88 * | |
89 * @return String the mime-type of this image. | |
90 */ | |
91 public String getMimetype(); | |
92 | |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
93 /** Crops the current image. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
94 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
95 * Cuts out a region of the size <code>width</code> x <code>height</code> at |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
96 * the offset <code>xoff</code>, <code>yoff</code> from the current image |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
97 * and replaces the current image with the result. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
98 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
99 * @param xoff X offset of crop region |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
100 * @param yoff Y offset of crop region |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
101 * @param width width of crop region |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
102 * @param height height of crop region |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
103 * @throws ImageOpException |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
104 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
105 public void crop(int xoff, int yoff, int width, int height) |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
106 throws ImageOpException; |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
107 |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
108 /** Scales the current image. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
109 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
110 * Replaces the current image with an image scaled by the factor |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
111 * <code>scale</code>. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
112 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
113 * @param scale scaling factor |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
114 * @throws ImageOpException |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
115 */ |
149 | 116 public void scale(double scaleX, double scaleY) throws ImageOpException; |
1 | 117 |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
118 /** Crops and scales the current image. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
119 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
120 * The current image is cropped to a rectangle of <code>width</code>, |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
121 * <code>height</code> at position <code>x_off</code>, <code>y_off</code>. The |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
122 * resulting image is scaled by the factor <code>scale</code> using the |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
123 * interpolation quality <code>qual</code> (0=worst). |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
124 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
125 * @param x_off x offset of the crop rectangle in pixel. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
126 * @param y_off y offset of the crop rectangle in pixel. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
127 * @param width width of the crop rectangle in pixel. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
128 * @param height height of the crop rectangle in pixel. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
129 * @param scale scaling factor. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
130 * @param qual interpolation quality (0=worst). |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
131 * @throws ImageOpException exception thrown on any error. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
132 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
133 public void cropAndScale( |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
134 int x_off, |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
135 int y_off, |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
136 int width, |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
137 int height, |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
138 double scale, |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
139 int qual) |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
140 throws ImageOpException; |
85 | 141 |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
142 /** Rotates the current image. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
143 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
144 * Replaces the current image with a rotated image. The image is rotated |
101 | 145 * around the center by the <code>angle</code> |
85 | 146 * given in degrees [0, 360] clockwise. |
147 * Image size and aspect ratio are likely to change. | |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
148 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
149 * @param angle rotation angle in degree |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
150 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
151 public void rotate(double angle) throws ImageOpException; |
85 | 152 |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
153 /** Mirrors the current image. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
154 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
155 * Replaces the current image with a mirrored image. The mirror axis goes |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
156 * through the center of the image and is rotated by <code>angle</code> |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
157 * degrees. Currently only horizontal and vertical mirroring (0 and 90 |
101 | 158 * degree) are supported. |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
159 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
160 * @param angle angle of mirror axis |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
161 * @throws ImageOpException |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
162 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
163 public void mirror(double angle) throws ImageOpException; |
85 | 164 |
86 | 165 /** Enhances brightness and contrast of the current image. |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
166 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
167 * Replaces the current image with a brightness and contrast enhanced image. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
168 * Contrast is enhanced by multiplying the pixel value with the constant |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
169 * <code>mult</code>. Brightness is enhanced by adding the constant |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
170 * <code>add</code> to the pixel value. Operation: p1 = (p0*mult)+add. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
171 * |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
172 * @param mult multiplicative constant for contrast enhancement |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
173 * @param add additive constant for brightness enhancement |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
174 * @throws ImageOpException |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
175 */ |
86 | 176 public void enhance(float mult, float add) throws ImageOpException; |
177 | |
178 /** Manipulates the colors of the current image. | |
179 * | |
180 * Replaces the current image with a color modified image. | |
181 * For the red, green and blue color channels all pixel values are multiplied | |
182 * by the constant | |
183 * <code>m</code> and added to the constant | |
184 * <code>a</code>. Operation: p1 = (p0*m)+a. | |
185 * | |
186 * @param rgbm multiplicative constants for red, green, blue | |
187 * @param rgba additive constant for red, green, blue | |
188 * @throws ImageOpException | |
189 */ | |
190 public void enhanceRGB(float[] rgbm, float[] rgba) | |
191 throws ImageOpException; | |
1 | 192 |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
193 /** |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
194 * Returns the interpolation quality. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
195 * @return int |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
196 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
197 public int getQuality(); |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
198 |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
199 /** |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
200 * Sets the interpolation quality. |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
201 * @param quality The quality to set |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
202 */ |
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
203 public void setQuality(int quality); |
207 | 204 |
205 /** Frees all resources bound to the DocuImage. | |
206 * | |
207 * Things that should be freed are image objects and open files. | |
208 * | |
209 */ | |
210 public void dispose(); | |
79
63c8186455c1
Servlet version 1.6b. Further cleanup and new functionality:
robcast
parents:
73
diff
changeset
|
211 |
1 | 212 } |