1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.camera;
18
19import android.content.ContentResolver;
20import android.content.ContentValues;
21import android.location.Location;
22import android.net.Uri;
23import android.os.Environment;
24import android.os.StatFs;
25import android.provider.MediaStore.Images;
26import android.provider.MediaStore.Images.ImageColumns;
27import android.util.Log;
28
29import java.io.File;
30import java.io.FileOutputStream;
31
32public class Storage {
33    private static final String TAG = "CameraStorage";
34
35    public static final String DCIM =
36            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).toString();
37
38    public static final String DIRECTORY = DCIM + "/Camera";
39
40    // Match the code in MediaProvider.computeBucketValues().
41    public static final String BUCKET_ID =
42            String.valueOf(DIRECTORY.toLowerCase().hashCode());
43
44    public static final long UNAVAILABLE = -1L;
45    public static final long PREPARING = -2L;
46    public static final long UNKNOWN_SIZE = -3L;
47    public static final long LOW_STORAGE_THRESHOLD= 50000000;
48
49    public static Uri addImage(ContentResolver resolver, String title, long date,
50                Location location, int orientation, byte[] jpeg, int width, int height) {
51        // Save the image.
52        String path = generateFilepath(title);
53        FileOutputStream out = null;
54        try {
55            out = new FileOutputStream(path);
56            out.write(jpeg);
57        } catch (Exception e) {
58            Log.e(TAG, "Failed to write image", e);
59            return null;
60        } finally {
61            try {
62                out.close();
63            } catch (Exception e) {
64            }
65        }
66
67        // Insert into MediaStore.
68        ContentValues values = new ContentValues(9);
69        values.put(ImageColumns.TITLE, title);
70        values.put(ImageColumns.DISPLAY_NAME, title + ".jpg");
71        values.put(ImageColumns.DATE_TAKEN, date);
72        values.put(ImageColumns.MIME_TYPE, "image/jpeg");
73        // Clockwise rotation in degrees. 0, 90, 180, or 270.
74        values.put(ImageColumns.ORIENTATION, orientation);
75        values.put(ImageColumns.DATA, path);
76        values.put(ImageColumns.SIZE, jpeg.length);
77        values.put(ImageColumns.WIDTH, width);
78        values.put(ImageColumns.HEIGHT, height);
79
80        if (location != null) {
81            values.put(ImageColumns.LATITUDE, location.getLatitude());
82            values.put(ImageColumns.LONGITUDE, location.getLongitude());
83        }
84
85        Uri uri = null;
86        try {
87            uri = resolver.insert(Images.Media.EXTERNAL_CONTENT_URI, values);
88        } catch (Throwable th)  {
89            // This can happen when the external volume is already mounted, but
90            // MediaScanner has not notify MediaProvider to add that volume.
91            // The picture is still safe and MediaScanner will find it and
92            // insert it into MediaProvider. The only problem is that the user
93            // cannot click the thumbnail to review the picture.
94            Log.e(TAG, "Failed to write MediaStore" + th);
95        }
96        return uri;
97    }
98
99    // newImage() and updateImage() together do the same work as
100    // addImage. newImage() is the first step, and it inserts the DATE_TAKEN and
101    // DATA fields into the database.
102    //
103    // We also insert hint values for the WIDTH and HEIGHT fields to give
104    // correct aspect ratio before the real values are updated in updateImage().
105    public static Uri newImage(ContentResolver resolver, String title,
106            long date, int width, int height) {
107        String path = generateFilepath(title);
108
109        // Insert into MediaStore.
110        ContentValues values = new ContentValues(4);
111        values.put(ImageColumns.DATE_TAKEN, date);
112        values.put(ImageColumns.DATA, path);
113        values.put(ImageColumns.WIDTH, width);
114        values.put(ImageColumns.HEIGHT, height);
115
116        Uri uri = null;
117        try {
118            uri = resolver.insert(Images.Media.EXTERNAL_CONTENT_URI, values);
119        } catch (Throwable th)  {
120            // This can happen when the external volume is already mounted, but
121            // MediaScanner has not notify MediaProvider to add that volume.
122            // The picture is still safe and MediaScanner will find it and
123            // insert it into MediaProvider. The only problem is that the user
124            // cannot click the thumbnail to review the picture.
125            Log.e(TAG, "Failed to new image" + th);
126        }
127        return uri;
128    }
129
130    // This is the second step. It completes the partial data added by
131    // newImage. All columns other than DATE_TAKEN and DATA are inserted
132    // here. This method also save the image data into the file.
133    //
134    // Returns true if the update is successful.
135    public static boolean updateImage(ContentResolver resolver, Uri uri,
136            String title, Location location, int orientation, byte[] jpeg,
137            int width, int height) {
138        // Save the image.
139        String path = generateFilepath(title);
140        String tmpPath = path + ".tmp";
141        FileOutputStream out = null;
142        try {
143            // Write to a temporary file and rename it to the final name. This
144            // avoids other apps reading incomplete data.
145            out = new FileOutputStream(tmpPath);
146            out.write(jpeg);
147            out.close();
148            new File(tmpPath).renameTo(new File(path));
149        } catch (Exception e) {
150            Log.e(TAG, "Failed to write image", e);
151            return false;
152        } finally {
153            try {
154                out.close();
155            } catch (Exception e) {
156            }
157        }
158
159        // Insert into MediaStore.
160        ContentValues values = new ContentValues(9);
161        values.put(ImageColumns.TITLE, title);
162        values.put(ImageColumns.DISPLAY_NAME, title + ".jpg");
163        values.put(ImageColumns.MIME_TYPE, "image/jpeg");
164        // Clockwise rotation in degrees. 0, 90, 180, or 270.
165        values.put(ImageColumns.ORIENTATION, orientation);
166        values.put(ImageColumns.SIZE, jpeg.length);
167        values.put(ImageColumns.WIDTH, width);
168        values.put(ImageColumns.HEIGHT, height);
169
170        if (location != null) {
171            values.put(ImageColumns.LATITUDE, location.getLatitude());
172            values.put(ImageColumns.LONGITUDE, location.getLongitude());
173        }
174
175        try {
176            resolver.update(uri, values, null, null);
177        } catch (Throwable th) {
178            Log.e(TAG, "Failed to update image" + th);
179            return false;
180        }
181
182        return true;
183    }
184
185    public static void deleteImage(ContentResolver resolver, Uri uri) {
186        try {
187            resolver.delete(uri, null, null);
188        } catch (Throwable th) {
189            Log.e(TAG, "Failed to delete image: " + uri);
190        }
191    }
192
193    public static String generateFilepath(String title) {
194        return DIRECTORY + '/' + title + ".jpg";
195    }
196
197    public static long getAvailableSpace() {
198        String state = Environment.getExternalStorageState();
199        Log.d(TAG, "External storage state=" + state);
200        if (Environment.MEDIA_CHECKING.equals(state)) {
201            return PREPARING;
202        }
203        if (!Environment.MEDIA_MOUNTED.equals(state)) {
204            return UNAVAILABLE;
205        }
206
207        File dir = new File(DIRECTORY);
208        dir.mkdirs();
209        if (!dir.isDirectory() || !dir.canWrite()) {
210            return UNAVAILABLE;
211        }
212
213        try {
214            StatFs stat = new StatFs(DIRECTORY);
215            return stat.getAvailableBlocks() * (long) stat.getBlockSize();
216        } catch (Exception e) {
217            Log.i(TAG, "Fail to access external storage", e);
218        }
219        return UNKNOWN_SIZE;
220    }
221
222    /**
223     * OSX requires plugged-in USB storage to have path /DCIM/NNNAAAAA to be
224     * imported. This is a temporary fix for bug#1655552.
225     */
226    public static void ensureOSXCompatible() {
227        File nnnAAAAA = new File(DCIM, "100ANDRO");
228        if (!(nnnAAAAA.exists() || nnnAAAAA.mkdirs())) {
229            Log.e(TAG, "Failed to create " + nnnAAAAA.getPath());
230        }
231    }
232}
233