Home | History | Annotate | Download | only in camera 
      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.content.ContentResolver;
     20 import android.content.ContentValues;
     21 import android.location.Location;
     22 import android.net.Uri;
     23 import android.os.Environment;
     24 import android.os.StatFs;
     25 import android.provider.MediaStore.Images;
     26 import android.provider.MediaStore.Images.ImageColumns;
     27 import android.util.Log;
     28 
     29 import java.io.File;
     30 import java.io.FileOutputStream;
     31 
     32 public 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     public static final long PICTURE_SIZE = 1500000;
     49 
     50     private static final int BUFSIZE = 4096;
     51 
     52     public static Uri addImage(ContentResolver resolver, String title, long date,
     53                 Location location, int orientation, byte[] jpeg, int width, int height) {
     54         // Save the image.
     55         String path = generateFilepath(title);
     56         FileOutputStream out = null;
     57         try {
     58             out = new FileOutputStream(path);
     59             out.write(jpeg);
     60         } catch (Exception e) {
     61             Log.e(TAG, "Failed to write image", e);
     62             return null;
     63         } finally {
     64             try {
     65                 out.close();
     66             } catch (Exception e) {
     67             }
     68         }
     69 
     70         // Insert into MediaStore.
     71         ContentValues values = new ContentValues(9);
     72         values.put(ImageColumns.TITLE, title);
     73         values.put(ImageColumns.DISPLAY_NAME, title + ".jpg");
     74         values.put(ImageColumns.DATE_TAKEN, date);
     75         values.put(ImageColumns.MIME_TYPE, "image/jpeg");
     76         values.put(ImageColumns.ORIENTATION, orientation);
     77         values.put(ImageColumns.DATA, path);
     78         values.put(ImageColumns.SIZE, jpeg.length);
     79         values.put(ImageColumns.WIDTH, width);
     80         values.put(ImageColumns.HEIGHT, height);
     81 
     82         if (location != null) {
     83             values.put(ImageColumns.LATITUDE, location.getLatitude());
     84             values.put(ImageColumns.LONGITUDE, location.getLongitude());
     85         }
     86 
     87         Uri uri = null;
     88         try {
     89             uri = resolver.insert(Images.Media.EXTERNAL_CONTENT_URI, values);
     90         } catch (Throwable th)  {
     91             // This can happen when the external volume is already mounted, but
     92             // MediaScanner has not notify MediaProvider to add that volume.
     93             // The picture is still safe and MediaScanner will find it and
     94             // insert it into MediaProvider. The only problem is that the user
     95             // cannot click the thumbnail to review the picture.
     96             Log.e(TAG, "Failed to write MediaStore" + th);
     97         }
     98         return uri;
     99     }
    100 
    101     public static String generateFilepath(String title) {
    102         return DIRECTORY + '/' + title + ".jpg";
    103     }
    104 
    105     public static long getAvailableSpace() {
    106         String state = Environment.getExternalStorageState();
    107         Log.d(TAG, "External storage state=" + state);
    108         if (Environment.MEDIA_CHECKING.equals(state)) {
    109             return PREPARING;
    110         }
    111         if (!Environment.MEDIA_MOUNTED.equals(state)) {
    112             return UNAVAILABLE;
    113         }
    114 
    115         File dir = new File(DIRECTORY);
    116         dir.mkdirs();
    117         if (!dir.isDirectory() || !dir.canWrite()) {
    118             return UNAVAILABLE;
    119         }
    120 
    121         try {
    122             StatFs stat = new StatFs(DIRECTORY);
    123             return stat.getAvailableBlocks() * (long) stat.getBlockSize();
    124         } catch (Exception e) {
    125             Log.i(TAG, "Fail to access external storage", e);
    126         }
    127         return UNKNOWN_SIZE;
    128     }
    129 
    130     /**
    131      * OSX requires plugged-in USB storage to have path /DCIM/NNNAAAAA to be
    132      * imported. This is a temporary fix for bug#1655552.
    133      */
    134     public static void ensureOSXCompatible() {
    135         File nnnAAAAA = new File(DCIM, "100ANDRO");
    136         if (!(nnnAAAAA.exists() || nnnAAAAA.mkdirs())) {
    137             Log.e(TAG, "Failed to create " + nnnAAAAA.getPath());
    138         }
    139     }
    140 }
    141