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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.server.telecom;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.AudioManager;
import android.os.UserHandle;
import android.provider.Settings;
import android.telecom.Log;
import android.telecom.TelecomManager;
import com.android.internal.util.IndentingPrintWriter;
// TODO: Needed for move to system service: import com.android.internal.R;
final class TtyManager implements WiredHeadsetManager.Listener {
private final TtyBroadcastReceiver mReceiver = new TtyBroadcastReceiver();
private final Context mContext;
private final WiredHeadsetManager mWiredHeadsetManager;
private int mPreferredTtyMode = TelecomManager.TTY_MODE_OFF;
private int mCurrentTtyMode = TelecomManager.TTY_MODE_OFF;
TtyManager(Context context, WiredHeadsetManager wiredHeadsetManager) {
mContext = context;
mWiredHeadsetManager = wiredHeadsetManager;
mWiredHeadsetManager.addListener(this);
mPreferredTtyMode = Settings.Secure.getIntForUser(
mContext.getContentResolver(),
Settings.Secure.PREFERRED_TTY_MODE,
TelecomManager.TTY_MODE_OFF,
mContext.getUserId());
IntentFilter intentFilter = new IntentFilter(
TelecomManager.ACTION_TTY_PREFERRED_MODE_CHANGED);
mContext.registerReceiver(mReceiver, intentFilter,
android.Manifest.permission.MODIFY_PHONE_STATE,
null, Context.RECEIVER_EXPORTED);
updateCurrentTtyMode();
}
boolean isTtySupported() {
boolean isEnabled = mContext.getResources().getBoolean(R.bool.tty_enabled);
Log.v(this, "isTtySupported: %b", isEnabled);
return isEnabled;
}
int getCurrentTtyMode() {
return mCurrentTtyMode;
}
@Override
public void onWiredHeadsetPluggedInChanged(boolean oldIsPluggedIn, boolean newIsPluggedIn) {
Log.v(this, "onWiredHeadsetPluggedInChanged");
updateCurrentTtyMode();
}
private void updateCurrentTtyMode() {
int newTtyMode = TelecomManager.TTY_MODE_OFF;
if (isTtySupported() && mWiredHeadsetManager.isPluggedIn()) {
newTtyMode = mPreferredTtyMode;
}
Log.v(this, "updateCurrentTtyMode, %d -> %d", mCurrentTtyMode, newTtyMode);
if (mCurrentTtyMode != newTtyMode) {
mCurrentTtyMode = newTtyMode;
Intent ttyModeChanged = new Intent(TelecomManager.ACTION_CURRENT_TTY_MODE_CHANGED);
ttyModeChanged.putExtra(TelecomManager.EXTRA_CURRENT_TTY_MODE, mCurrentTtyMode);
mContext.sendBroadcastAsUser(ttyModeChanged, UserHandle.ALL,
android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE);
updateAudioTtyMode();
}
}
private void updateAudioTtyMode() {
String audioTtyMode;
switch (mCurrentTtyMode) {
case TelecomManager.TTY_MODE_FULL:
audioTtyMode = "tty_full";
break;
case TelecomManager.TTY_MODE_VCO:
audioTtyMode = "tty_vco";
break;
case TelecomManager.TTY_MODE_HCO:
audioTtyMode = "tty_hco";
break;
case TelecomManager.TTY_MODE_OFF:
default:
audioTtyMode = "tty_off";
break;
}
Log.v(this, "updateAudioTtyMode, %s", audioTtyMode);
AudioManager audioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
audioManager.setParameters("tty_mode=" + audioTtyMode);
}
private final class TtyBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.startSession("TBR.oR");
try {
String action = intent.getAction();
Log.v(TtyManager.this, "onReceive, action: %s", action);
if (action.equals(TelecomManager.ACTION_TTY_PREFERRED_MODE_CHANGED)) {
int newPreferredTtyMode = intent.getIntExtra(
TelecomManager.EXTRA_TTY_PREFERRED_MODE, TelecomManager.TTY_MODE_OFF);
if (mPreferredTtyMode != newPreferredTtyMode) {
mPreferredTtyMode = newPreferredTtyMode;
updateCurrentTtyMode();
}
}
} finally {
Log.endSession();
}
}
}
/**
* Dumps the state of the {@link TtyManager}.
*
* @param pw The {@code IndentingPrintWriter} to write the state to.
*/
public void dump(IndentingPrintWriter pw) {
pw.println("mCurrentTtyMode: " + mCurrentTtyMode);
}
}
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