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-rw-r--r--src/com/android/gallery3d/data/FaceClustering.java94
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diff --git a/src/com/android/gallery3d/data/FaceClustering.java b/src/com/android/gallery3d/data/FaceClustering.java
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+/*
+ * Copyright (C) 2011 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 com.android.gallery3d.R;
+
+import android.content.Context;
+
+import java.util.ArrayList;
+import java.util.Map;
+import java.util.TreeMap;
+
+public class FaceClustering extends Clustering {
+ @SuppressWarnings("unused")
+ private static final String TAG = "FaceClustering";
+
+ private ArrayList<ArrayList<Path>> mClusters;
+ private String[] mNames;
+ private String mUntaggedString;
+
+ public FaceClustering(Context context) {
+ mUntaggedString = context.getResources().getString(R.string.untagged);
+ }
+
+ @Override
+ public void run(MediaSet baseSet) {
+ final TreeMap<Face, ArrayList<Path>> map =
+ new TreeMap<Face, ArrayList<Path>>();
+ final ArrayList<Path> untagged = new ArrayList<Path>();
+
+ baseSet.enumerateTotalMediaItems(new MediaSet.ItemConsumer() {
+ public void consume(int index, MediaItem item) {
+ Path path = item.getPath();
+
+ Face[] faces = item.getFaces();
+ if (faces == null || faces.length == 0) {
+ untagged.add(path);
+ return;
+ }
+ for (int j = 0; j < faces.length; j++) {
+ Face key = faces[j];
+ ArrayList<Path> list = map.get(key);
+ if (list == null) {
+ list = new ArrayList<Path>();
+ map.put(key, list);
+ }
+ list.add(path);
+ }
+ }
+ });
+
+ int m = map.size();
+ mClusters = new ArrayList<ArrayList<Path>>();
+ mNames = new String[m + ((untagged.size() > 0) ? 1 : 0)];
+ int i = 0;
+ for (Map.Entry<Face, ArrayList<Path>> entry : map.entrySet()) {
+ mNames[i++] = entry.getKey().getName();
+ mClusters.add(entry.getValue());
+ }
+ if (untagged.size() > 0) {
+ mNames[i++] = mUntaggedString;
+ mClusters.add(untagged);
+ }
+ }
+
+ @Override
+ public int getNumberOfClusters() {
+ return mClusters.size();
+ }
+
+ @Override
+ public ArrayList<Path> getCluster(int index) {
+ return mClusters.get(index);
+ }
+
+ @Override
+ public String getClusterName(int index) {
+ return mNames[index];
+ }
+}