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
|
package ij.plugin;
import ij.*;
import ij.process.*;
import ij.io.FileSaver;
import ij.io.SaveDialog;
import java.awt.image.*;
import java.awt.*;
import java.io.*;
import java.util.Iterator;
import javax.imageio.*;
import javax.imageio.stream.*;
/** The File/Save As/Jpeg command (FileSaver.saveAsJpeg() method)
uses this plugin to save images in JPEG format. */
public class JpegWriter implements PlugIn {
public static final int DEFAULT_QUALITY = 75;
public void run(String arg) {
ImagePlus imp = WindowManager.getCurrentImage();
if (imp==null) return;
imp.startTiming();
saveAsJpeg(imp,arg,FileSaver.getJpegQuality());
IJ.showTime(imp, imp.getStartTime(), "JpegWriter: ");
}
/** Thread-safe method. */
public static String save(ImagePlus imp, String path, int quality) {
if (imp==null)
imp = IJ.getImage();
if (path==null || path.length()==0)
path = SaveDialog.getPath(imp, ".jpg");
if (path==null)
return null;
String error = (new JpegWriter()).saveAsJpeg(imp, path, quality);
return error;
}
String saveAsJpeg(ImagePlus imp, String path, int quality) {
int width = imp.getWidth();
int height = imp.getHeight();
int biType = BufferedImage.TYPE_INT_RGB;
boolean overlay = imp.getOverlay()!=null && !imp.getHideOverlay();
ImageProcessor ip = imp.getProcessor();
if (ip.isDefaultLut() && !imp.isComposite() && !overlay && ip.getMinThreshold()==ImageProcessor.NO_THRESHOLD)
biType = BufferedImage.TYPE_BYTE_GRAY;
BufferedImage bi = new BufferedImage(width, height, biType);
String error = null;
try {
Graphics g = bi.createGraphics();
Image img = imp.getImage();
if (overlay)
img = imp.flatten().getImage();
g.drawImage(img, 0, 0, null);
g.dispose();
Iterator iter = ImageIO.getImageWritersByFormatName("jpeg");
ImageWriter writer = (ImageWriter)iter.next();
File f = new File(path);
String originalPath = null;
boolean replacing = f.exists();
if (replacing) {
originalPath = path;
path += ".temp";
f = new File(path);
}
ImageOutputStream ios = ImageIO.createImageOutputStream(f);
writer.setOutput(ios);
ImageWriteParam param = writer.getDefaultWriteParam();
param.setCompressionMode(param.MODE_EXPLICIT);
param.setCompressionQuality(quality/100f);
if (quality == 100)
param.setSourceSubsampling(1, 1, 0, 0);
IIOImage iioImage = new IIOImage(bi, null, null);
writer.write(null, iioImage, param);
ios.close();
writer.dispose();
if (replacing) {
File f2 = new File(originalPath);
boolean ok = f2.delete();
if (ok) f.renameTo(f2);
}
} catch (Exception e) {
error = ""+e;
IJ.error("Jpeg Writer", ""+error);
}
return error;
}
/**
* @deprecated
* replaced by FileSaver.setJpegQuality()
*/
public static void setQuality(int jpegQuality) {
FileSaver.setJpegQuality(jpegQuality);
}
/**
* @deprecated
* replaced by FileSaver.getJpegQuality()
*/
public static int getQuality() {
return FileSaver.getJpegQuality();
}
}
|
