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/*
* Copyright (C) 2014 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.tv.util;
import android.media.tv.TvInputInfo;
import android.media.tv.TvInputManager;
import android.media.tv.TvInputManager.TvInputListener;
import android.os.Handler;
import android.util.Log;
import junit.framework.Assert;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
public class TvInputManagerHelper {
private static final String TAG = "TvInputManagerHelper";
private final TvInputManager mTvInputManager;
private final Map<String, Integer> mInputStateMap =
new HashMap<String, Integer>();
private final Map<String, TvInputInfo> mInputMap =
new HashMap<String, TvInputInfo>();
private final TvInputListener mInternalListener =
new TvInputListener() {
@Override
public void onInputStateChanged(String inputId, int state) {
mInputStateMap.put(inputId, state);
for (TvInputListener listener : mListeners) {
listener.onInputStateChanged(inputId, state);
}
}
};
private final Handler mHandler = new Handler();
private boolean mStarted;
private final HashSet<TvInputListener> mListeners = new HashSet<TvInputListener>();
public TvInputManagerHelper(TvInputManager tvInputManager) {
mTvInputManager = tvInputManager;
}
public void start() {
if (mStarted) {
return;
}
mStarted = true;
List<TvInputInfo> inputs = mTvInputManager.getTvInputList();
if (inputs.size() < 1) {
return;
}
mTvInputManager.registerListener(mInternalListener, mHandler);
update();
}
// It updates newly installed or deleted TV input.
// TODO: remove it when TIS package change can be notified from frameworks.
public void update() {
if (!mStarted) {
throw new IllegalStateException("TvInputManagerHelper didn't start yet");
}
mInputMap.clear();
mInputStateMap.clear();
for (TvInputInfo input : mTvInputManager.getTvInputList()) {
String inputId = input.getId();
mInputMap.put(inputId, input);
int state = mTvInputManager.getInputState(inputId);
mInputStateMap.put(inputId, state);
}
Assert.assertEquals(mInputStateMap.size(), mInputMap.size());
}
public void stop() {
if (!mStarted) {
return;
}
mTvInputManager.unregisterListener(mInternalListener);
mStarted = false;
mInputStateMap.clear();
mInputMap.clear();
}
public Collection<TvInputInfo> getTvInputInfos(boolean availableOnly) {
if (!availableOnly) {
return mInputMap.values();
} else {
ArrayList<TvInputInfo> list = new ArrayList<TvInputInfo>();
Iterator<Map.Entry<String, Integer>> it =
mInputStateMap.entrySet().iterator();
while (it.hasNext()) {
Map.Entry<String, Integer> pair = it.next();
if (pair.getValue() != TvInputManager.INPUT_STATE_DISCONNECTED) {
list.add(getTvInputInfo(pair.getKey()));
}
}
return list;
}
}
public TvInputInfo getTvInputInfo(String inputId) {
if (!mStarted) {
throw new IllegalStateException("TvInputManagerHelper didn't start yet");
}
if (inputId == null) {
return null;
}
TvInputInfo input = mInputMap.get(inputId);
if (input == null) {
update();
input = mInputMap.get(inputId);
}
return input;
}
public int getTvInputSize() {
return mInputStateMap.size();
}
public int getInputState(TvInputInfo inputInfo) {
return getInputState(inputInfo.getId());
}
public int getInputState(String inputId) {
if (!mStarted) {
throw new IllegalStateException("AvailabilityManager doesn't started");
}
Integer state = mInputStateMap.get(inputId);
if (state == null) {
update();
state = mInputStateMap.get(inputId);
if (state == null) {
Log.w(TAG, "getInputState: no such input (id=" + inputId + ")");
return TvInputManager.INPUT_STATE_DISCONNECTED;
}
}
return state;
}
public void addListener(TvInputListener listener) {
mListeners.add(listener);
}
public void removeListener(TvInputListener listener) {
mListeners.remove(listener);
}
}
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