SaveVideoFileUtils.java revision 648b339c74da2b863304ffc61c8528cc74c2afb3 
1/*
2 * Copyright (C) 2012 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.gallery3d.util;
18
19import android.content.ContentResolver;
20import android.content.ContentValues;
21import android.database.Cursor;
22import android.net.Uri;
23import android.os.Environment;
24import android.provider.MediaStore.Video;
25import android.provider.MediaStore.Video.VideoColumns;
26
27import java.io.File;
28import java.sql.Date;
29import java.text.SimpleDateFormat;
30
31public class SaveVideoFileUtils {
32    // Copy from SaveCopyTask.java in terms of how to handle the destination
33    // path and filename : querySource() and getSaveDirectory().
34    public interface ContentResolverQueryCallback {
35        void onCursorResult(Cursor cursor);
36    }
37
38    // This function can decide which folder to save the video file, and generate
39    // the needed information for the video file including filename.
40    public static SaveVideoFileInfo getDstMp4FileInfo(String fileNameFormat,
41            ContentResolver contentResolver, Uri uri, String defaultFolderName) {
42        SaveVideoFileInfo dstFileInfo = new SaveVideoFileInfo();
43        // Use the default save directory if the source directory cannot be
44        // saved.
45        dstFileInfo.mDirectory = getSaveDirectory(contentResolver, uri);
46        if ((dstFileInfo.mDirectory == null) || !dstFileInfo.mDirectory.canWrite()) {
47            dstFileInfo.mDirectory = new File(Environment.getExternalStorageDirectory(),
48                    BucketNames.DOWNLOAD);
49            dstFileInfo.mFolderName = defaultFolderName;
50        } else {
51            dstFileInfo.mFolderName = dstFileInfo.mDirectory.getName();
52        }
53        dstFileInfo.mFileName = new SimpleDateFormat(fileNameFormat).format(
54                new Date(System.currentTimeMillis()));
55
56        dstFileInfo.mFile = new File(dstFileInfo.mDirectory, dstFileInfo.mFileName + ".mp4");
57        return dstFileInfo;
58    }
59
60    private static void querySource(ContentResolver contentResolver, Uri uri,
61            String[] projection, ContentResolverQueryCallback callback) {
62        Cursor cursor = null;
63        try {
64            cursor = contentResolver.query(uri, projection, null, null, null);
65            if ((cursor != null) && cursor.moveToNext()) {
66                callback.onCursorResult(cursor);
67            }
68        } catch (Exception e) {
69            // Ignore error for lacking the data column from the source.
70        } finally {
71            if (cursor != null) {
72                cursor.close();
73            }
74        }
75    }
76
77    private static File getSaveDirectory(ContentResolver contentResolver, Uri uri) {
78        final File[] dir = new File[1];
79        querySource(contentResolver, uri,
80                new String[] { VideoColumns.DATA },
81                new ContentResolverQueryCallback() {
82            @Override
83            public void onCursorResult(Cursor cursor) {
84                dir[0] = new File(cursor.getString(0)).getParentFile();
85            }
86        });
87        return dir[0];
88    }
89
90
91    /**
92     * Insert the content (saved file) with proper video properties.
93     */
94    public static Uri insertContent(SaveVideoFileInfo mDstFileInfo,
95            ContentResolver contentResolver, Uri uri ) {
96        long nowInMs = System.currentTimeMillis();
97        long nowInSec = nowInMs / 1000;
98        final ContentValues values = new ContentValues(12);
99        values.put(Video.Media.TITLE, mDstFileInfo.mFileName);
100        values.put(Video.Media.DISPLAY_NAME, mDstFileInfo.mFile.getName());
101        values.put(Video.Media.MIME_TYPE, "video/mp4");
102        values.put(Video.Media.DATE_TAKEN, nowInMs);
103        values.put(Video.Media.DATE_MODIFIED, nowInSec);
104        values.put(Video.Media.DATE_ADDED, nowInSec);
105        values.put(Video.Media.DATA, mDstFileInfo.mFile.getAbsolutePath());
106        values.put(Video.Media.SIZE, mDstFileInfo.mFile.length());
107        // Copy the data taken and location info from src.
108        String[] projection = new String[] {
109                VideoColumns.DATE_TAKEN,
110                VideoColumns.LATITUDE,
111                VideoColumns.LONGITUDE,
112                VideoColumns.RESOLUTION,
113        };
114
115        // Copy some info from the source file.
116        querySource(contentResolver, uri, projection,
117                new ContentResolverQueryCallback() {
118                @Override
119                    public void onCursorResult(Cursor cursor) {
120                        long timeTaken = cursor.getLong(0);
121                        if (timeTaken > 0) {
122                            values.put(Video.Media.DATE_TAKEN, timeTaken);
123                        }
124                        double latitude = cursor.getDouble(1);
125                        double longitude = cursor.getDouble(2);
126                        // TODO: Change || to && after the default location
127                        // issue is
128                        // fixed.
129                        if ((latitude != 0f) || (longitude != 0f)) {
130                            values.put(Video.Media.LATITUDE, latitude);
131                            values.put(Video.Media.LONGITUDE, longitude);
132                        }
133                        values.put(Video.Media.RESOLUTION, cursor.getString(3));
134
135                    }
136                });
137
138        return contentResolver.insert(Video.Media.EXTERNAL_CONTENT_URI, values);
139    }
140
141}
142