1 /*
2  * Copyright (C) 2013 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.data;
18 
19 import android.database.Cursor;
20 import android.graphics.Bitmap;
21 import android.graphics.BitmapFactory;
22 import android.net.Uri;
23 
24 import com.android.camera.debug.Log;
25 import com.android.camera.util.Size;
26 
27 import java.util.Date;
28 
29 public class PhotoDataFactory {
30     private static final Log.Tag TAG = new Log.Tag("PhotoDataFact");
31 
fromCursor(Cursor c)32     public FilmstripItemData fromCursor(Cursor c) {
33         long id = c.getLong(PhotoDataQuery.COL_ID);
34         String title = c.getString(PhotoDataQuery.COL_TITLE);
35         String mimeType = c.getString(PhotoDataQuery.COL_MIME_TYPE);
36         long dateTakenInMilliSeconds = c.getLong(PhotoDataQuery.COL_DATE_TAKEN);
37         long dateModifiedInSeconds = c.getLong(PhotoDataQuery.COL_DATE_MODIFIED);
38         Date creationDate = new Date(dateTakenInMilliSeconds);
39         Date lastModifiedDate = new Date(dateModifiedInSeconds * 1000);
40 
41         String filePath = c.getString(PhotoDataQuery.COL_DATA);
42         int orientation = c.getInt(PhotoDataQuery.COL_ORIENTATION);
43         int width = c.getInt(PhotoDataQuery.COL_WIDTH);
44         int height = c.getInt(PhotoDataQuery.COL_HEIGHT);
45 
46         Size dimensions;
47         // If the width or height is unknown, attempt to decode it from
48         // the physical bitmaps.
49         if (width <= 0 || height <= 0) {
50 
51             Log.w(TAG, "Zero dimension in ContentResolver for "
52                   + filePath + ":" + width + "x" + height);
53 
54             dimensions = decodeBitmapDimensions(filePath);
55             if (dimensions == null) {
56                 // If we are unable to decode non-zero bitmap dimensions
57                 // we should not create a filmstrip item data for this
58                 // entry in the media store.
59                 return null;
60             }
61         } else {
62             dimensions = new Size(width, height);
63         }
64 
65         long sizeInBytes = c.getLong(PhotoDataQuery.COL_SIZE);
66         double latitude = c.getDouble(PhotoDataQuery.COL_LATITUDE);
67         double longitude = c.getDouble(PhotoDataQuery.COL_LONGITUDE);
68         Location location = Location.from(latitude, longitude);
69 
70         Uri uri = PhotoDataQuery.CONTENT_URI.buildUpon().appendPath(String.valueOf(id)).build();
71 
72         return new FilmstripItemData(
73               id,
74               title,
75               mimeType,
76               creationDate,
77               lastModifiedDate,
78               filePath,
79               uri,
80               dimensions,
81               sizeInBytes,
82               orientation,
83               location);
84     }
85 
86     /**
87      * Given a file path, decode the bitmap dimensions if possible.
88      */
decodeBitmapDimensions(String filePath)89     private Size decodeBitmapDimensions(String filePath) {
90         int width;
91         int height;
92 
93         // Ensure we only decode the dimensions, not the whole
94         // file if at all possible.
95         BitmapFactory.Options opts = new BitmapFactory.Options();
96         opts.inJustDecodeBounds = true;
97         BitmapFactory.decodeFile(filePath, opts);
98         if (opts.outWidth > 0 && opts.outHeight > 0) {
99             width = opts.outWidth;
100             height = opts.outHeight;
101         } else {
102             Log.w(TAG, "Dimension decode failed for " + filePath);
103 
104             // Fall back on decoding the entire file
105             Bitmap b = BitmapFactory.decodeFile(filePath);
106             if (b == null) {
107                 Log.w(TAG, "PhotoData skipped."
108                       + " Decoding " + filePath + " failed.");
109                 return null;
110             }
111             width = b.getWidth();
112             height = b.getHeight();
113             if (width == 0 || height == 0) {
114                 Log.w(TAG, "PhotoData skipped. Bitmap size 0 for " + filePath);
115                 return null;
116             }
117         }
118 
119         return new Size(width, height);
120     }
121 }