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/*
* Copyright 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.telecomm;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.AudioManager;
import android.media.session.MediaSession;
import android.media.session.MediaSessionManager;
import android.view.KeyEvent;
/**
* Static class to handle listening to the headset media buttons.
*/
final class HeadsetMediaButton extends CallsManagerListenerBase {
// Types of media button presses
static final int SHORT_PRESS = 1;
static final int LONG_PRESS = 2;
private final MediaSession.Callback mSessionCallback = new MediaSession.Callback() {
@Override
public void onMediaButtonEvent(Intent intent) {
KeyEvent event = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
Log.v(this, "SessionCallback.onMediaButton()... event = %s.", event);
if ((event != null) && (event.getKeyCode() == KeyEvent.KEYCODE_HEADSETHOOK)) {
Log.v(this, "SessionCallback: HEADSETHOOK");
boolean consumed = handleHeadsetHook(event);
Log.v(this, "==> handleHeadsetHook(): consumed = %b.", consumed);
}
}
};
private final CallsManager mCallsManager;
private final MediaSession mSession;
HeadsetMediaButton(Context context, CallsManager callsManager) {
mCallsManager = callsManager;
// Create a MediaSession but don't enable it yet. This is a
// replacement for MediaButtonReceiver
mSession = new MediaSession(context, HeadsetMediaButton.class.getSimpleName());
mSession.addCallback(mSessionCallback);
mSession.setFlags(MediaSession.FLAG_EXCLUSIVE_GLOBAL_PRIORITY
| MediaSession.FLAG_HANDLES_MEDIA_BUTTONS);
mSession.setPlaybackToLocal(AudioManager.STREAM_VOICE_CALL);
}
/**
* Handles the wired headset button while in-call.
*
* @return true if we consumed the event.
*/
private boolean handleHeadsetHook(KeyEvent event) {
Log.d(this, "handleHeadsetHook()...%s %s", event.getAction(), event.getRepeatCount());
if (event.isLongPress()) {
return mCallsManager.onMediaButton(LONG_PRESS);
} else if (event.getAction() == KeyEvent.ACTION_UP && event.getRepeatCount() == 0) {
return mCallsManager.onMediaButton(SHORT_PRESS);
}
return true;
}
/** ${inheritDoc} */
@Override
public void onCallAdded(Call call) {
if (!mSession.isActive()) {
mSession.setActive(true);
}
}
/** ${inheritDoc} */
@Override
public void onCallRemoved(Call call) {
if (!mCallsManager.hasAnyCalls()) {
if (mSession.isActive()) {
mSession.setActive(false);
}
}
}
}
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