diff options
Diffstat (limited to 'src/com/android/gallery3d/app/PanoramaMetadataSupport.java')
-rw-r--r-- | src/com/android/gallery3d/app/PanoramaMetadataSupport.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/app/PanoramaMetadataSupport.java b/src/com/android/gallery3d/app/PanoramaMetadataSupport.java new file mode 100644 index 000000000..d40422582 --- /dev/null +++ b/src/com/android/gallery3d/app/PanoramaMetadataSupport.java @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.android.gallery3d.app; + +import com.android.gallery3d.data.MediaObject; +import com.android.gallery3d.data.MediaObject.PanoramaSupportCallback; +import com.android.gallery3d.data.PanoramaMetadataJob; +import com.android.gallery3d.util.Future; +import com.android.gallery3d.util.FutureListener; +import com.android.gallery3d.util.LightCycleHelper.PanoramaMetadata; + +import java.util.ArrayList; + +/** + * This class breaks out the off-thread panorama support checks so that the + * complexity can be shared between UriImage and LocalImage, which need to + * support panoramas. + */ +public class PanoramaMetadataSupport implements FutureListener<PanoramaMetadata> { + private Object mLock = new Object(); + private Future<PanoramaMetadata> mGetPanoMetadataTask; + private PanoramaMetadata mPanoramaMetadata; + private ArrayList<PanoramaSupportCallback> mCallbacksWaiting; + private MediaObject mMediaObject; + + public PanoramaMetadataSupport(MediaObject mediaObject) { + mMediaObject = mediaObject; + } + + public void getPanoramaSupport(GalleryApp app, PanoramaSupportCallback callback) { + synchronized (mLock) { + if (mPanoramaMetadata != null) { + callback.panoramaInfoAvailable(mMediaObject, mPanoramaMetadata.mUsePanoramaViewer, + mPanoramaMetadata.mIsPanorama360); + } else { + if (mCallbacksWaiting == null) { + mCallbacksWaiting = new ArrayList<PanoramaSupportCallback>(); + mGetPanoMetadataTask = app.getThreadPool().submit( + new PanoramaMetadataJob(app.getAndroidContext(), + mMediaObject.getContentUri()), this); + + } + mCallbacksWaiting.add(callback); + } + } + } + + public void clearCachedValues() { + synchronized (mLock) { + if (mPanoramaMetadata != null) { + mPanoramaMetadata = null; + } else if (mGetPanoMetadataTask != null) { + mGetPanoMetadataTask.cancel(); + for (PanoramaSupportCallback cb : mCallbacksWaiting) { + cb.panoramaInfoAvailable(mMediaObject, false, false); + } + mGetPanoMetadataTask = null; + mCallbacksWaiting = null; + } + } + } + + @Override + public void onFutureDone(Future<PanoramaMetadata> future) { + synchronized (mLock) { + mPanoramaMetadata = future.get(); + for (PanoramaSupportCallback cb : mCallbacksWaiting) { + cb.panoramaInfoAvailable(mMediaObject, + mPanoramaMetadata.mUsePanoramaViewer, + mPanoramaMetadata.mIsPanorama360); + } + mGetPanoMetadataTask = null; + mCallbacksWaiting = null; + } + } +} |