PanoramaMetadataLoader.java revision 8e29072ca69229a25dc4a856e3635d131613f4ca 
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
17package com.android.camera.data;
18
19import android.content.Context;
20import android.net.Uri;
21
22import com.android.camera.util.PhotoSphereHelper;
23
24/**
25 * This class breaks out the off-thread panorama support.
26 */
27public class PanoramaMetadataLoader {
28    /**
29     * Extracts panorama metadata from the item with the given URI and fills the
30     * {@code metadata}.
31     */
32    public static boolean loadPanoramaMetadata(final Context context, Uri contentUri,
33            Metadata metadata) {
34        PhotoSphereHelper.PanoramaMetadata panoramaMetadata =
35              PhotoSphereHelper.getPanoramaMetadata(context, contentUri);
36        // Note: The use of '==' here is in purpose as this is a singleton that
37        // is returned if this is not a panorama, so pointer comparison works.
38        if (panoramaMetadata == null || panoramaMetadata == PhotoSphereHelper.NOT_PANORAMA) {
39            return false;
40        }
41
42        metadata.setPanorama(true);
43        metadata.setPanorama360(panoramaMetadata.mIsPanorama360);
44        metadata.setUsePanoramaViewer(panoramaMetadata.mUsePanoramaViewer);
45
46        return true;
47    }
48}
49