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.annotation.TargetApi;
20import android.content.ContentResolver;
21import android.content.ContentValues;
22import android.location.Location;
23import android.net.Uri;
24import android.os.Build;
25import android.os.Environment;
26import android.os.StatFs;
27import android.provider.MediaStore.Images;
28import android.provider.MediaStore.Images.ImageColumns;
29import android.provider.MediaStore.MediaColumns;
30import android.util.Log;
31
32import com.android.gallery3d.common.ApiHelper;
33
34import java.io.File;
35import java.io.FileOutputStream;
36
37public class Storage {
38    private static final String TAG = "CameraStorage";
39
40    public static final String DCIM =
41            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).toString();
42
43    public static final String DIRECTORY = DCIM + "/Camera";
44
45    // Match the code in MediaProvider.computeBucketValues().
46    public static final String BUCKET_ID =
47            String.valueOf(DIRECTORY.toLowerCase().hashCode());
48
49    public static final long UNAVAILABLE = -1L;
50    public static final long PREPARING = -2L;
51    public static final long UNKNOWN_SIZE = -3L;
52    public static final long LOW_STORAGE_THRESHOLD= 50000000;
53
54    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
55    private static void setImageSize(ContentValues values, int width, int height) {
56        // The two fields are available since ICS but got published in JB
57        if (ApiHelper.HAS_MEDIA_COLUMNS_WIDTH_AND_HEIGHT) {
58            values.put(MediaColumns.WIDTH, width);
59            values.put(MediaColumns.HEIGHT, height);
60        }
61    }
62
63    public static void writeFile(String path, byte[] data) {
64        FileOutputStream out = null;
65        try {
66            out = new FileOutputStream(path);
67            out.write(data);
68        } catch (Exception e) {
69            Log.e(TAG, "Failed to write data", e);
70        } finally {
71            try {
72                out.close();
73            } catch (Exception e) {
74            }
75        }
76    }
77
78    // Save the image and add it to media store.
79    public static Uri addImage(ContentResolver resolver, String title,
80            long date, Location location, int orientation, byte[] jpeg,
81            int width, int height) {
82        // Save the image.
83        String path = generateFilepath(title);
84        writeFile(path, jpeg);
85        return addImage(resolver, title, date, location, orientation,
86                jpeg.length, path, width, height);
87    }
88
89    // Add the image to media store.
90    public static Uri addImage(ContentResolver resolver, String title,
91            long date, Location location, int orientation, int jpegLength,
92            String path, int width, int height) {
93        // Insert into MediaStore.
94        ContentValues values = new ContentValues(9);
95        values.put(ImageColumns.TITLE, title);
96        values.put(ImageColumns.DISPLAY_NAME, title + ".jpg");
97        values.put(ImageColumns.DATE_TAKEN, date);
98        values.put(ImageColumns.MIME_TYPE, "image/jpeg");
99        // Clockwise rotation in degrees. 0, 90, 180, or 270.
100        values.put(ImageColumns.ORIENTATION, orientation);
101        values.put(ImageColumns.DATA, path);
102        values.put(ImageColumns.SIZE, jpegLength);
103
104        setImageSize(values, width, height);
105
106        if (location != null) {
107            values.put(ImageColumns.LATITUDE, location.getLatitude());
108            values.put(ImageColumns.LONGITUDE, location.getLongitude());
109        }
110
111        Uri uri = null;
112        try {
113            uri = resolver.insert(Images.Media.EXTERNAL_CONTENT_URI, values);
114        } catch (Throwable th)  {
115            // This can happen when the external volume is already mounted, but
116            // MediaScanner has not notify MediaProvider to add that volume.
117            // The picture is still safe and MediaScanner will find it and
118            // insert it into MediaProvider. The only problem is that the user
119            // cannot click the thumbnail to review the picture.
120            Log.e(TAG, "Failed to write MediaStore" + th);
121        }
122        return uri;
123    }
124
125    public static void deleteImage(ContentResolver resolver, Uri uri) {
126        try {
127            resolver.delete(uri, null, null);
128        } catch (Throwable th) {
129            Log.e(TAG, "Failed to delete image: " + uri);
130        }
131    }
132
133    public static String generateFilepath(String title) {
134        return DIRECTORY + '/' + title + ".jpg";
135    }
136
137    public static long getAvailableSpace() {
138        String state = Environment.getExternalStorageState();
139        Log.d(TAG, "External storage state=" + state);
140        if (Environment.MEDIA_CHECKING.equals(state)) {
141            return PREPARING;
142        }
143        if (!Environment.MEDIA_MOUNTED.equals(state)) {
144            return UNAVAILABLE;
145        }
146
147        File dir = new File(DIRECTORY);
148        dir.mkdirs();
149        if (!dir.isDirectory() || !dir.canWrite()) {
150            return UNAVAILABLE;
151        }
152
153        try {
154            StatFs stat = new StatFs(DIRECTORY);
155            return stat.getAvailableBlocks() * (long) stat.getBlockSize();
156        } catch (Exception e) {
157            Log.i(TAG, "Fail to access external storage", e);
158        }
159        return UNKNOWN_SIZE;
160    }
161
162    /**
163     * OSX requires plugged-in USB storage to have path /DCIM/NNNAAAAA to be
164     * imported. This is a temporary fix for bug#1655552.
165     */
166    public static void ensureOSXCompatible() {
167        File nnnAAAAA = new File(DCIM, "100ANDRO");
168        if (!(nnnAAAAA.exists() || nnnAAAAA.mkdirs())) {
169            Log.e(TAG, "Failed to create " + nnnAAAAA.getPath());
170        }
171    }
172}
173