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 17 package com.android.camera; 18 19 import android.annotation.TargetApi; 20 import android.content.ContentResolver; 21 import android.content.ContentValues; 22 import android.location.Location; 23 import android.net.Uri; 24 import android.os.Build; 25 import android.os.Environment; 26 import android.os.StatFs; 27 import android.provider.MediaStore.Images; 28 import android.provider.MediaStore.Images.ImageColumns; 29 import android.provider.MediaStore.MediaColumns; 30 import android.util.Log; 31 32 import com.android.gallery3d.common.ApiHelper; 33 import com.android.gallery3d.exif.ExifInterface; 34 35 import java.io.File; 36 import java.io.FileOutputStream; 37 38 public class Storage { 39 private static final String TAG = "CameraStorage"; 40 41 public static final String DCIM = 42 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).toString(); 43 44 public static final String DIRECTORY = DCIM + "/Camera"; 45 46 // Match the code in MediaProvider.computeBucketValues(). 47 public static final String BUCKET_ID = 48 String.valueOf(DIRECTORY.toLowerCase().hashCode()); 49 50 public static final long UNAVAILABLE = -1L; 51 public static final long PREPARING = -2L; 52 public static final long UNKNOWN_SIZE = -3L; 53 public static final long LOW_STORAGE_THRESHOLD = 50000000; 54 55 @TargetApi(Build.VERSION_CODES.JELLY_BEAN) 56 private static void setImageSize(ContentValues values, int width, int height) { 57 // The two fields are available since ICS but got published in JB 58 if (ApiHelper.HAS_MEDIA_COLUMNS_WIDTH_AND_HEIGHT) { 59 values.put(MediaColumns.WIDTH, width); 60 values.put(MediaColumns.HEIGHT, height); 61 } 62 } 63 64 public static void writeFile(String path, byte[] data) { 65 FileOutputStream out = null; 66 try { 67 out = new FileOutputStream(path); 68 out.write(data); 69 } catch (Exception e) { 70 Log.e(TAG, "Failed to write data", e); 71 } finally { 72 try { 73 out.close(); 74 } catch (Exception e) { 75 } 76 } 77 } 78 79 // Save the image and add it to media store. 80 public static Uri addImage(ContentResolver resolver, String title, 81 long date, Location location, int orientation, ExifInterface exif, 82 byte[] jpeg, int width, int height) { 83 // Save the image. 84 String path = generateFilepath(title); 85 if (exif != null) { 86 try { 87 exif.writeExif(jpeg, path); 88 } catch (Exception e) { 89 Log.e(TAG, "Failed to write data", e); 90 } 91 } else { 92 writeFile(path, jpeg); 93 } 94 return addImage(resolver, title, date, location, orientation, 95 jpeg.length, path, width, height); 96 } 97 98 // Add the image to media store. 99 public static Uri addImage(ContentResolver resolver, String title, 100 long date, Location location, int orientation, int jpegLength, 101 String path, int width, int height) { 102 // Insert into MediaStore. 103 ContentValues values = new ContentValues(9); 104 values.put(ImageColumns.TITLE, title); 105 values.put(ImageColumns.DISPLAY_NAME, title + ".jpg"); 106 values.put(ImageColumns.DATE_TAKEN, date); 107 values.put(ImageColumns.MIME_TYPE, "image/jpeg"); 108 // Clockwise rotation in degrees. 0, 90, 180, or 270. 109 values.put(ImageColumns.ORIENTATION, orientation); 110 values.put(ImageColumns.DATA, path); 111 values.put(ImageColumns.SIZE, jpegLength); 112 113 setImageSize(values, width, height); 114 115 if (location != null) { 116 values.put(ImageColumns.LATITUDE, location.getLatitude()); 117 values.put(ImageColumns.LONGITUDE, location.getLongitude()); 118 } 119 120 Uri uri = null; 121 try { 122 uri = resolver.insert(Images.Media.EXTERNAL_CONTENT_URI, values); 123 } catch (Throwable th) { 124 // This can happen when the external volume is already mounted, but 125 // MediaScanner has not notify MediaProvider to add that volume. 126 // The picture is still safe and MediaScanner will find it and 127 // insert it into MediaProvider. The only problem is that the user 128 // cannot click the thumbnail to review the picture. 129 Log.e(TAG, "Failed to write MediaStore" + th); 130 } 131 return uri; 132 } 133 134 public static void deleteImage(ContentResolver resolver, Uri uri) { 135 try { 136 resolver.delete(uri, null, null); 137 } catch (Throwable th) { 138 Log.e(TAG, "Failed to delete image: " + uri); 139 } 140 } 141 142 public static String generateFilepath(String title) { 143 return DIRECTORY + '/' + title + ".jpg"; 144 } 145 146 public static long getAvailableSpace() { 147 String state = Environment.getExternalStorageState(); 148 Log.d(TAG, "External storage state=" + state); 149 if (Environment.MEDIA_CHECKING.equals(state)) { 150 return PREPARING; 151 } 152 if (!Environment.MEDIA_MOUNTED.equals(state)) { 153 return UNAVAILABLE; 154 } 155 156 File dir = new File(DIRECTORY); 157 dir.mkdirs(); 158 if (!dir.isDirectory() || !dir.canWrite()) { 159 return UNAVAILABLE; 160 } 161 162 try { 163 StatFs stat = new StatFs(DIRECTORY); 164 return stat.getAvailableBlocks() * (long) stat.getBlockSize(); 165 } catch (Exception e) { 166 Log.i(TAG, "Fail to access external storage", e); 167 } 168 return UNKNOWN_SIZE; 169 } 170 171 /** 172 * OSX requires plugged-in USB storage to have path /DCIM/NNNAAAAA to be 173 * imported. This is a temporary fix for bug#1655552. 174 */ 175 public static void ensureOSXCompatible() { 176 File nnnAAAAA = new File(DCIM, "100ANDRO"); 177 if (!(nnnAAAAA.exists() || nnnAAAAA.mkdirs())) { 178 Log.e(TAG, "Failed to create " + nnnAAAAA.getPath()); 179 } 180 } 181 } 182
