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1
7
8 package com.sun.imageio.spi;
9
10 import java.io.File  ;
11 import java.io.IOException ;
12 import java.io.OutputStream ;
13 import java.util.Locale ;
14 import javax.imageio.spi.ImageOutputStreamSpi ;
15 import javax.imageio.stream.ImageOutputStream ;
16 import javax.imageio.stream.FileCacheImageOutputStream ;
17 import javax.imageio.stream.MemoryCacheImageOutputStream ;
18
19 public class OutputStreamImageOutputStreamSpi extends ImageOutputStreamSpi {
20
21 private static final String vendorName = "Sun Microsystems, Inc.";
22
23 private static final String version = "1.0";
24
25 private static final Class outputClass = OutputStream .class;
26
27 public OutputStreamImageOutputStreamSpi() {
28 super(vendorName, version, outputClass);
29 }
30
31 public String getDescription(Locale locale) {
32 return "Service provider that instantiates an OutputStreamImageOutputStream from an OutputStream";
33 }
34
35 public boolean canUseCacheFile() {
36 return true;
37 }
38
39 public boolean needsCacheFile() {
40 return false;
41 }
42
43 public ImageOutputStream createOutputStreamInstance(Object output,
44 boolean useCache,
45 File cacheDir)
46 throws IOException {
47 if (output instanceof OutputStream ) {
48 OutputStream os = (OutputStream )output;
49 if (useCache) {
50 return new FileCacheImageOutputStream (os, cacheDir);
51 } else {
52 return new MemoryCacheImageOutputStream (os);
53 }
54 } else {
55 throw new IllegalArgumentException ();
56 }
57 }
58 }
59 |
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