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-rw-r--r--src/com/android/gallery3d/data/LocalMergeAlbum.java257
1 files changed, 0 insertions, 257 deletions
diff --git a/src/com/android/gallery3d/data/LocalMergeAlbum.java b/src/com/android/gallery3d/data/LocalMergeAlbum.java
deleted file mode 100644
index f0b5e5726..000000000
--- a/src/com/android/gallery3d/data/LocalMergeAlbum.java
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * Copyright (C) 2010 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.data;
-
-import android.net.Uri;
-import android.provider.MediaStore;
-
-import com.android.gallery3d.common.ApiHelper;
-
-import java.lang.ref.SoftReference;
-import java.util.ArrayList;
-import java.util.Comparator;
-import java.util.NoSuchElementException;
-import java.util.SortedMap;
-import java.util.TreeMap;
-
-// MergeAlbum merges items from two or more MediaSets. It uses a Comparator to
-// determine the order of items. The items are assumed to be sorted in the input
-// media sets (with the same order that the Comparator uses).
-//
-// This only handles MediaItems, not SubMediaSets.
-public class LocalMergeAlbum extends MediaSet implements ContentListener {
- @SuppressWarnings("unused")
- private static final String TAG = "LocalMergeAlbum";
- private static final int PAGE_SIZE = 64;
-
- private final Comparator<MediaItem> mComparator;
- private final MediaSet[] mSources;
-
- private FetchCache[] mFetcher;
- private int mSupportedOperation;
- private int mBucketId;
-
- // mIndex maps global position to the position of each underlying media sets.
- private TreeMap<Integer, int[]> mIndex = new TreeMap<Integer, int[]>();
-
- public LocalMergeAlbum(
- Path path, Comparator<MediaItem> comparator, MediaSet[] sources, int bucketId) {
- super(path, INVALID_DATA_VERSION);
- mComparator = comparator;
- mSources = sources;
- mBucketId = bucketId;
- for (MediaSet set : mSources) {
- set.addContentListener(this);
- }
- reload();
- }
-
- @Override
- public boolean isCameraRoll() {
- if (mSources.length == 0) return false;
- for(MediaSet set : mSources) {
- if (!set.isCameraRoll()) return false;
- }
- return true;
- }
-
- private void updateData() {
- ArrayList<MediaSet> matches = new ArrayList<MediaSet>();
- int supported = mSources.length == 0 ? 0 : MediaItem.SUPPORT_ALL;
- mFetcher = new FetchCache[mSources.length];
- for (int i = 0, n = mSources.length; i < n; ++i) {
- mFetcher[i] = new FetchCache(mSources[i]);
- supported &= mSources[i].getSupportedOperations();
- }
- mSupportedOperation = supported;
- mIndex.clear();
- mIndex.put(0, new int[mSources.length]);
- }
-
- private void invalidateCache() {
- for (int i = 0, n = mSources.length; i < n; i++) {
- mFetcher[i].invalidate();
- }
- mIndex.clear();
- mIndex.put(0, new int[mSources.length]);
- }
-
- @Override
- public Uri getContentUri() {
- String bucketId = String.valueOf(mBucketId);
- if (ApiHelper.HAS_MEDIA_PROVIDER_FILES_TABLE) {
- return MediaStore.Files.getContentUri("external").buildUpon()
- .appendQueryParameter(LocalSource.KEY_BUCKET_ID, bucketId)
- .build();
- } else {
- // We don't have a single URL for a merged image before ICS
- // So we used the image's URL as a substitute.
- return MediaStore.Images.Media.EXTERNAL_CONTENT_URI.buildUpon()
- .appendQueryParameter(LocalSource.KEY_BUCKET_ID, bucketId)
- .build();
- }
- }
-
- @Override
- public String getName() {
- return mSources.length == 0 ? "" : mSources[0].getName();
- }
-
- @Override
- public int getMediaItemCount() {
- return getTotalMediaItemCount();
- }
-
- @Override
- public ArrayList<MediaItem> getMediaItem(int start, int count) {
-
- // First find the nearest mark position <= start.
- SortedMap<Integer, int[]> head = mIndex.headMap(start + 1);
- int markPos = head.lastKey();
- int[] subPos = head.get(markPos).clone();
- MediaItem[] slot = new MediaItem[mSources.length];
-
- int size = mSources.length;
-
- // fill all slots
- for (int i = 0; i < size; i++) {
- slot[i] = mFetcher[i].getItem(subPos[i]);
- }
-
- ArrayList<MediaItem> result = new ArrayList<MediaItem>();
-
- for (int i = markPos; i < start + count; i++) {
- int k = -1; // k points to the best slot up to now.
- for (int j = 0; j < size; j++) {
- if (slot[j] != null) {
- if (k == -1 || mComparator.compare(slot[j], slot[k]) < 0) {
- k = j;
- }
- }
- }
-
- // If we don't have anything, all streams are exhausted.
- if (k == -1) break;
-
- // Pick the best slot and refill it.
- subPos[k]++;
- if (i >= start) {
- result.add(slot[k]);
- }
- slot[k] = mFetcher[k].getItem(subPos[k]);
-
- // Periodically leave a mark in the index, so we can come back later.
- if ((i + 1) % PAGE_SIZE == 0) {
- mIndex.put(i + 1, subPos.clone());
- }
- }
-
- return result;
- }
-
- @Override
- public int getTotalMediaItemCount() {
- int count = 0;
- for (MediaSet set : mSources) {
- count += set.getTotalMediaItemCount();
- }
- return count;
- }
-
- @Override
- public long reload() {
- boolean changed = false;
- for (int i = 0, n = mSources.length; i < n; ++i) {
- if (mSources[i].reload() > mDataVersion) changed = true;
- }
- if (changed) {
- mDataVersion = nextVersionNumber();
- updateData();
- invalidateCache();
- }
- return mDataVersion;
- }
-
- @Override
- public void onContentDirty() {
- notifyContentChanged();
- }
-
- @Override
- public int getSupportedOperations() {
- return mSupportedOperation;
- }
-
- @Override
- public void delete() {
- for (MediaSet set : mSources) {
- set.delete();
- }
- }
-
- @Override
- public void rotate(int degrees) {
- for (MediaSet set : mSources) {
- set.rotate(degrees);
- }
- }
-
- private static class FetchCache {
- private MediaSet mBaseSet;
- private SoftReference<ArrayList<MediaItem>> mCacheRef;
- private int mStartPos;
-
- public FetchCache(MediaSet baseSet) {
- mBaseSet = baseSet;
- }
-
- public void invalidate() {
- mCacheRef = null;
- }
-
- public MediaItem getItem(int index) {
- boolean needLoading = false;
- ArrayList<MediaItem> cache = null;
- if (mCacheRef == null
- || index < mStartPos || index >= mStartPos + PAGE_SIZE) {
- needLoading = true;
- } else {
- cache = mCacheRef.get();
- if (cache == null) {
- needLoading = true;
- }
- }
-
- if (needLoading) {
- cache = mBaseSet.getMediaItem(index, PAGE_SIZE);
- mCacheRef = new SoftReference<ArrayList<MediaItem>>(cache);
- mStartPos = index;
- }
-
- if (index < mStartPos || index >= mStartPos + cache.size()) {
- return null;
- }
-
- return cache.get(index - mStartPos);
- }
- }
-
- @Override
- public boolean isLeafAlbum() {
- return true;
- }
-}
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