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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];
}
}
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