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.content.ContentResolver;
20 import android.content.Context;
21 import android.database.Cursor;
22 import android.net.Uri;
23 import android.provider.MediaStore;
24 
25 import com.android.camera.data.FilmstripContentQueries.CursorToFilmstripItemFactory;
26 import com.android.camera.debug.Log;
27 
28 import java.util.List;
29 
30 public class VideoItemFactory implements CursorToFilmstripItemFactory<VideoItem> {
31     private static final Log.Tag TAG = new Log.Tag("VideoItemFact");
32     private static final String QUERY_ORDER = MediaStore.Video.VideoColumns.DATE_TAKEN
33           + " DESC, " + MediaStore.Video.VideoColumns._ID + " DESC";
34 
35     private final Context mContext;
36     private final GlideFilmstripManager mGlideManager;
37     private final ContentResolver mContentResolver;
38     private final VideoDataFactory mVideoDataFactory;
39 
VideoItemFactory(Context context, GlideFilmstripManager glideManager, ContentResolver contentResolver, VideoDataFactory videoDataFactory)40     public VideoItemFactory(Context context, GlideFilmstripManager glideManager,
41           ContentResolver contentResolver, VideoDataFactory videoDataFactory) {
42         mContext = context;
43         mGlideManager = glideManager;
44         mContentResolver = contentResolver;
45         mVideoDataFactory = videoDataFactory;
46     }
47 
48     @Override
get(Cursor c)49     public VideoItem get(Cursor c) {
50         VideoItemData data = mVideoDataFactory.fromCursor(c);
51         if (data != null) {
52             return new VideoItem(mContext, mGlideManager, data, this);
53         } else {
54             Log.w(TAG, "skipping item with null data, returning null for item");
55             return null;
56         }
57     }
58 
59     /** Query for a single video data item */
get(Uri uri)60     public VideoItem get(Uri uri) {
61         VideoItem newData = null;
62         Cursor c = mContext.getContentResolver().query(uri, VideoDataQuery.QUERY_PROJECTION, null,
63               null, null);
64         if (c != null) {
65             if (c.moveToFirst()) {
66                 newData = get(c);
67             }
68             c.close();
69         }
70 
71         return newData;
72     }
73 
74     /** Query for all the video data items */
queryAll()75     public List<VideoItem> queryAll() {
76         return queryAll(VideoDataQuery.CONTENT_URI,
77               FilmstripItemBase.QUERY_ALL_MEDIA_ID);
78     }
79 
80     /** Query for all the video data items */
queryAll(Uri uri, long lastId)81     public List<VideoItem> queryAll(Uri uri, long lastId) {
82         return FilmstripContentQueries
83               .forCameraPath(mContentResolver, uri, VideoDataQuery.QUERY_PROJECTION, lastId,
84                     QUERY_ORDER, this);
85     }
86 
87     /** Query for a single data item */
queryContentUri(Uri uri)88     public VideoItem queryContentUri(Uri uri) {
89         // TODO: Consider refactoring this, this approach may be slow.
90         List<VideoItem> videos = queryAll(uri,
91               FilmstripItemBase.QUERY_ALL_MEDIA_ID);
92         if (videos.isEmpty()) {
93             return null;
94         }
95         return videos.get(0);
96     }
97 }
98