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1 | package be.nikiroo.utils.android; |
2 | ||
3 | import android.graphics.Bitmap; | |
4 | import android.graphics.BitmapFactory; | |
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5 | |
6 | import java.io.File; | |
7 | import java.io.FileOutputStream; | |
8 | import java.io.IOException; | |
9 | ||
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10 | import be.nikiroo.utils.Image; |
11 | import be.nikiroo.utils.ImageUtils; | |
67bcea89 | 12 | import be.nikiroo.utils.StringUtils; |
e704a414 | 13 | |
e8aa5bf9 | 14 | /** |
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15 | * This class offer some utilities based around images and uses the Android |
16 | * framework. | |
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17 | * |
18 | * @author niki | |
19 | */ | |
20 | public class ImageUtilsAndroid extends ImageUtils { | |
21 | @Override | |
22 | public void saveAsImage(Image img, File target, String format) | |
23 | throws IOException { | |
24 | FileOutputStream fos = new FileOutputStream(target); | |
25 | try { | |
26 | Bitmap image = fromImage(img); | |
27 | ||
28 | boolean ok = false; | |
29 | try { | |
30 | ok = image.compress( | |
31 | Bitmap.CompressFormat.valueOf(format.toUpperCase()), | |
32 | 90, fos); | |
33 | } catch (Exception e) { | |
34 | ok = false; | |
35 | } | |
36 | ||
37 | // Some formats are not reliable | |
38 | // Second change: PNG | |
39 | if (!ok && !format.equals("png")) { | |
40 | ok = image.compress(Bitmap.CompressFormat.PNG, 90, fos); | |
41 | } | |
42 | ||
43 | if (!ok) { | |
44 | throw new IOException( | |
45 | "Cannot find a writer for this image and format: " | |
46 | + format); | |
47 | } | |
48 | } catch (IOException e) { | |
49 | throw new IOException("Cannot write image to " + target, e); | |
50 | } finally { | |
51 | fos.close(); | |
52 | } | |
53 | } | |
54 | ||
55 | /** | |
56 | * Convert the given {@link Image} into a {@link Bitmap} object. | |
57 | * | |
58 | * @param img | |
59 | * the {@link Image} | |
60 | * @return the {@link Image} object | |
61 | * @throws IOException | |
62 | * in case of IO error | |
63 | */ | |
64 | static public Bitmap fromImage(Image img) throws IOException { | |
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65 | byte[] array = img.getData(); |
66 | int size = array.length; | |
67 | Bitmap image = BitmapFactory.decodeByteArray(array, 0, size); | |
e8aa5bf9 | 68 | if (image == null) { |
67bcea89 | 69 | String ssize = StringUtils.formatNumber(size); |
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70 | throw new IOException( |
71 | "Failed to convert input to image, size was: " + ssize); | |
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72 | } |
73 | ||
74 | return image; | |
75 | } | |
76 | } |