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.Context; 20 import android.net.Uri; 21 import android.os.Bundle; 22 23 import com.android.camera.util.PhotoSphereHelper; 24 25 /** 26 * This class breaks out the off-thread panorama support. 27 */ 28 public class PanoramaMetadataLoader { 29 /** 30 * The key for the metadata in {@link com.android.camera.data.LocalData} to 31 * indicate whether the data is a 360-degrees panorama. 32 */ 33 private static final String KEY_PANORAMA_360 = "metadata_key_panorama_360"; 34 35 /** 36 * The key for the metadata in {@link com.android.camera.data.LocalData} to 37 * indicate whether the data is a panorama and the panorama viewer should be 38 * used to consume it. 39 */ 40 private static final String KEY_USE_PANORAMA_VIEWER = "metadata_key_panorama_viewer"; 41 42 /** 43 * The key for the metadata in {@link com.android.camera.data.LocalData} to 44 * indicate whether the data is a panorama with it's metadata. 45 */ 46 private static final String KEY_IS_PANORAMA = "metadata_key_is_panorama"; 47 48 /** 49 * @return whether the {@code data} is a panorama. 50 */ 51 public static boolean isPanorama(final LocalData data) { 52 return data.getMetadata().getBoolean(KEY_IS_PANORAMA); 53 } 54 55 /** 56 * @return whether the {@code data} is a panorama and the panorama viewer 57 * should be used to consume it. 58 */ 59 public static boolean isPanoramaAndUseViewer(final LocalData data) { 60 return data.getMetadata().getBoolean(KEY_USE_PANORAMA_VIEWER); 61 } 62 63 /** 64 * @return whether the {@code data} is a 360-degrees panorama. 65 */ 66 public static boolean isPanorama360(final LocalData data) { 67 return data.getMetadata().getBoolean(KEY_PANORAMA_360); 68 } 69 70 /** 71 * Extracts panorama metadata from the item with the given URI and fills the 72 * {@code metadata}. 73 */ 74 public static void loadPanoramaMetadata(final Context context, Uri contentUri, 75 Bundle metadata) { 76 PhotoSphereHelper.PanoramaMetadata panoramaMetadata = 77 PhotoSphereHelper.getPanoramaMetadata(context, contentUri); 78 if (panoramaMetadata == null) { 79 return; 80 } 81 82 // Note: The use of '!=' here is in purpose as this is a singleton that 83 // is returned if this is not a panorama, so pointer comparison works. 84 boolean hasMetadata = panoramaMetadata != PhotoSphereHelper.NOT_PANORAMA; 85 metadata.putBoolean(KEY_IS_PANORAMA, hasMetadata); 86 metadata.putBoolean(KEY_PANORAMA_360, panoramaMetadata.mIsPanorama360); 87 metadata.putBoolean(KEY_USE_PANORAMA_VIEWER, 88 panoramaMetadata.mUsePanoramaViewer); 89 } 90 } 91