1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.render.afp;
import java.awt.Rectangle;
import java.awt.color.ColorSpace;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.xmlgraphics.image.loader.Image;
import org.apache.xmlgraphics.image.loader.ImageFlavor;
import org.apache.xmlgraphics.image.loader.ImageSize;
import org.apache.xmlgraphics.image.loader.impl.ImageRawJPEG;
import org.apache.xmlgraphics.image.loader.impl.JPEGConstants;
import org.apache.xmlgraphics.util.MimeConstants;
import org.apache.fop.afp.AFPDataObjectInfo;
import org.apache.fop.afp.AFPImageObjectInfo;
import org.apache.fop.afp.AFPObjectAreaInfo;
import org.apache.fop.afp.AFPPaintingState;
import org.apache.fop.afp.AFPResourceInfo;
import org.apache.fop.afp.AFPResourceManager;
import org.apache.fop.afp.ioca.ImageContent;
import org.apache.fop.afp.modca.ResourceObject;
import org.apache.fop.render.ImageHandler;
import org.apache.fop.render.RenderingContext;
/**
* {@link ImageHandler} implementation which handles ImageRawJPEG instances. JPEG data is
* embedded directly (not decoded) into IOCA images (FS11 or FS45).
*/
public class AFPImageHandlerRawJPEG extends AFPImageHandler implements ImageHandler {
/** logging instance */
private final Log log = LogFactory.getLog(AFPImageHandlerRawJPEG.class);
private void setDefaultResourceLevel(AFPImageObjectInfo imageObjectInfo,
AFPResourceManager resourceManager) {
AFPResourceInfo resourceInfo = imageObjectInfo.getResourceInfo();
if (!resourceInfo.levelChanged()) {
resourceInfo.setLevel(resourceManager.getResourceLevelDefaults()
.getDefaultResourceLevel(ResourceObject.TYPE_IMAGE));
}
}
/** {@inheritDoc} */
@Override
protected AFPDataObjectInfo createDataObjectInfo() {
return new AFPImageObjectInfo();
}
/** {@inheritDoc} */
public int getPriority() {
return 150;
}
/** {@inheritDoc} */
public Class<?> getSupportedImageClass() {
return ImageRawJPEG.class;
}
/** {@inheritDoc} */
public ImageFlavor[] getSupportedImageFlavors() {
return new ImageFlavor[] {ImageFlavor.RAW_JPEG};
}
/** {@inheritDoc} */
public void handleImage(RenderingContext context, Image image, Rectangle pos)
throws IOException {
AFPRenderingContext afpContext = (AFPRenderingContext)context;
AFPImageObjectInfo imageObjectInfo = (AFPImageObjectInfo)createDataObjectInfo();
AFPPaintingState paintingState = afpContext.getPaintingState();
// set resource information
imageObjectInfo.setResourceInfo(createResourceInformation(
image.getInfo().getOriginalURI(),
afpContext.getForeignAttributes()));
setDefaultResourceLevel(imageObjectInfo, afpContext.getResourceManager());
// Positioning
imageObjectInfo.setObjectAreaInfo(createObjectAreaInfo(paintingState, pos));
updateIntrinsicSize(imageObjectInfo, paintingState, image.getSize());
// Image content
ImageRawJPEG jpeg = (ImageRawJPEG)image;
imageObjectInfo.setCompression(ImageContent.COMPID_JPEG);
ColorSpace cs = jpeg.getColorSpace();
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
imageObjectInfo.setMimeType(MimeConstants.MIME_AFP_IOCA_FS11);
imageObjectInfo.setColor(false);
imageObjectInfo.setBitsPerPixel(8);
break;
case ColorSpace.TYPE_RGB:
imageObjectInfo.setMimeType(MimeConstants.MIME_AFP_IOCA_FS11);
imageObjectInfo.setColor(true);
imageObjectInfo.setBitsPerPixel(24);
break;
case ColorSpace.TYPE_CMYK:
imageObjectInfo.setMimeType(MimeConstants.MIME_AFP_IOCA_FS45);
imageObjectInfo.setColor(true);
imageObjectInfo.setBitsPerPixel(32);
break;
default:
throw new IllegalStateException(
"Color space of JPEG image not supported: " + cs);
}
boolean included = afpContext.getResourceManager().tryIncludeObject(imageObjectInfo);
if (!included) {
log.debug("Embedding undecoded JPEG as IOCA image...");
InputStream inputStream = jpeg.createInputStream();
try {
imageObjectInfo.setData(IOUtils.toByteArray(inputStream));
} finally {
IOUtils.closeQuietly(inputStream);
}
// Create image
afpContext.getResourceManager().createObject(imageObjectInfo);
}
}
private void updateIntrinsicSize(AFPImageObjectInfo imageObjectInfo,
AFPPaintingState paintingState, ImageSize targetSize) {
//Update image object info
imageObjectInfo.setDataHeightRes((int)Math.round(
targetSize.getDpiHorizontal() * 10));
imageObjectInfo.setDataWidthRes((int)Math.round(
targetSize.getDpiVertical() * 10));
imageObjectInfo.setDataHeight(targetSize.getHeightPx());
imageObjectInfo.setDataWidth(targetSize.getWidthPx());
// set object area info
int resolution = paintingState.getResolution();
AFPObjectAreaInfo objectAreaInfo = imageObjectInfo.getObjectAreaInfo();
objectAreaInfo.setResolution(resolution);
}
/** {@inheritDoc} */
public boolean isCompatible(RenderingContext targetContext, Image image) {
if (!(targetContext instanceof AFPRenderingContext)) {
return false; //AFP-specific image handler
}
AFPRenderingContext context = (AFPRenderingContext)targetContext;
AFPPaintingState paintingState = context.getPaintingState();
if (!paintingState.canEmbedJpeg()) {
return false;
}
if (paintingState.getBitsPerPixel() < 8) {
return false; //This would stand in the way of dithering and cause exceptions
}
if (image == null) {
return true; //Don't know the image format, yet
}
if (image instanceof ImageRawJPEG) {
ImageRawJPEG jpeg = (ImageRawJPEG)image;
ColorSpace cs = jpeg.getColorSpace();
switch (cs.getType()) {
case ColorSpace.TYPE_GRAY:
case ColorSpace.TYPE_RGB:
//ok
break;
case ColorSpace.TYPE_CMYK:
if (!paintingState.isCMYKImagesSupported()) {
return false; //CMYK is disabled
//Note: you may need to disable this image handler through configuration
//if you want to paint a CMYK JPEG on 24bit and less configurations.
}
break;
default:
return false; //not supported
}
if (jpeg.getSOFType() != JPEGConstants.SOF0) {
return false; //We'll let only baseline DCT through.
}
return true;
}
return false;
}
}
|
