1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.telecom; 18 19 import android.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.content.IntentFilter; 23 import android.media.AudioManager; 24 import android.os.UserHandle; 25 import android.provider.Settings; 26 import android.telecom.Log; 27 import android.telecom.TelecomManager; 28 29 import com.android.internal.util.IndentingPrintWriter; 30 31 // TODO: Needed for move to system service: import com.android.internal.R; 32 33 final class TtyManager implements WiredHeadsetManager.Listener { 34 private final TtyBroadcastReceiver mReceiver = new TtyBroadcastReceiver(); 35 private final Context mContext; 36 private final WiredHeadsetManager mWiredHeadsetManager; 37 private int mPreferredTtyMode = TelecomManager.TTY_MODE_OFF; 38 private int mCurrentTtyMode = TelecomManager.TTY_MODE_OFF; 39 TtyManager(Context context, WiredHeadsetManager wiredHeadsetManager)40 TtyManager(Context context, WiredHeadsetManager wiredHeadsetManager) { 41 mContext = context; 42 mWiredHeadsetManager = wiredHeadsetManager; 43 mWiredHeadsetManager.addListener(this); 44 45 mPreferredTtyMode = Settings.Secure.getInt( 46 mContext.getContentResolver(), 47 Settings.Secure.PREFERRED_TTY_MODE, 48 TelecomManager.TTY_MODE_OFF); 49 50 IntentFilter intentFilter = new IntentFilter( 51 TelecomManager.ACTION_TTY_PREFERRED_MODE_CHANGED); 52 mContext.registerReceiver(mReceiver, intentFilter, 53 android.Manifest.permission.MODIFY_PHONE_STATE, 54 null); 55 56 updateCurrentTtyMode(); 57 } 58 isTtySupported()59 boolean isTtySupported() { 60 boolean isEnabled = mContext.getResources().getBoolean(R.bool.tty_enabled); 61 Log.v(this, "isTtySupported: %b", isEnabled); 62 return isEnabled; 63 } 64 getCurrentTtyMode()65 int getCurrentTtyMode() { 66 return mCurrentTtyMode; 67 } 68 69 @Override onWiredHeadsetPluggedInChanged(boolean oldIsPluggedIn, boolean newIsPluggedIn)70 public void onWiredHeadsetPluggedInChanged(boolean oldIsPluggedIn, boolean newIsPluggedIn) { 71 Log.v(this, "onWiredHeadsetPluggedInChanged"); 72 updateCurrentTtyMode(); 73 } 74 updateCurrentTtyMode()75 private void updateCurrentTtyMode() { 76 int newTtyMode = TelecomManager.TTY_MODE_OFF; 77 if (isTtySupported() && mWiredHeadsetManager.isPluggedIn()) { 78 newTtyMode = mPreferredTtyMode; 79 } 80 Log.v(this, "updateCurrentTtyMode, %d -> %d", mCurrentTtyMode, newTtyMode); 81 82 if (mCurrentTtyMode != newTtyMode) { 83 mCurrentTtyMode = newTtyMode; 84 Intent ttyModeChanged = new Intent(TelecomManager.ACTION_CURRENT_TTY_MODE_CHANGED); 85 ttyModeChanged.putExtra(TelecomManager.EXTRA_CURRENT_TTY_MODE, mCurrentTtyMode); 86 mContext.sendBroadcastAsUser(ttyModeChanged, UserHandle.ALL); 87 88 updateAudioTtyMode(); 89 } 90 } 91 updateAudioTtyMode()92 private void updateAudioTtyMode() { 93 String audioTtyMode; 94 switch (mCurrentTtyMode) { 95 case TelecomManager.TTY_MODE_FULL: 96 audioTtyMode = "tty_full"; 97 break; 98 case TelecomManager.TTY_MODE_VCO: 99 audioTtyMode = "tty_vco"; 100 break; 101 case TelecomManager.TTY_MODE_HCO: 102 audioTtyMode = "tty_hco"; 103 break; 104 case TelecomManager.TTY_MODE_OFF: 105 default: 106 audioTtyMode = "tty_off"; 107 break; 108 } 109 Log.v(this, "updateAudioTtyMode, %s", audioTtyMode); 110 111 AudioManager audioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE); 112 audioManager.setParameters("tty_mode=" + audioTtyMode); 113 } 114 115 private final class TtyBroadcastReceiver extends BroadcastReceiver { 116 @Override onReceive(Context context, Intent intent)117 public void onReceive(Context context, Intent intent) { 118 Log.startSession("TBR.oR"); 119 try { 120 String action = intent.getAction(); 121 Log.v(TtyManager.this, "onReceive, action: %s", action); 122 if (action.equals(TelecomManager.ACTION_TTY_PREFERRED_MODE_CHANGED)) { 123 int newPreferredTtyMode = intent.getIntExtra( 124 TelecomManager.EXTRA_TTY_PREFERRED_MODE, TelecomManager.TTY_MODE_OFF); 125 if (mPreferredTtyMode != newPreferredTtyMode) { 126 mPreferredTtyMode = newPreferredTtyMode; 127 updateCurrentTtyMode(); 128 } 129 } 130 } finally { 131 Log.endSession(); 132 } 133 } 134 } 135 136 /** 137 * Dumps the state of the {@link TtyManager}. 138 * 139 * @param pw The {@code IndentingPrintWriter} to write the state to. 140 */ dump(IndentingPrintWriter pw)141 public void dump(IndentingPrintWriter pw) { 142 pw.println("mCurrentTtyMode: " + mCurrentTtyMode); 143 } 144 } 145