| /* |
| * 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.ContentResolver; |
| import android.provider.Settings; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * A helper class which serves only to make it easier to lookup timeout values. This class should |
| * never be instantiated, and only accessed through the {@link #get(String, long)} method. |
| * |
| * These methods are safe to call from any thread, including the UI thread. |
| */ |
| public final class Timeouts { |
| public static class Adapter { |
| public Adapter() { } |
| |
| public long getCallScreeningTimeoutMillis(ContentResolver cr) { |
| return Timeouts.getCallScreeningTimeoutMillis(cr); |
| } |
| |
| public long getCallRemoveUnbindInCallServicesDelay(ContentResolver cr) { |
| return Timeouts.getCallRemoveUnbindInCallServicesDelay(cr); |
| } |
| |
| public long getRetryBluetoothConnectAudioBackoffMillis(ContentResolver cr) { |
| return Timeouts.getRetryBluetoothConnectAudioBackoffMillis(cr); |
| } |
| |
| public long getBluetoothPendingTimeoutMillis(ContentResolver cr) { |
| return Timeouts.getBluetoothPendingTimeoutMillis(cr); |
| } |
| |
| public long getEmergencyCallbackWindowMillis(ContentResolver cr) { |
| return Timeouts.getEmergencyCallbackWindowMillis(cr); |
| } |
| } |
| |
| /** A prefix to use for all keys so to not clobber the global namespace. */ |
| private static final String PREFIX = "telecom."; |
| |
| private Timeouts() {} |
| |
| /** |
| * Returns the timeout value from Settings or the default value if it hasn't been changed. This |
| * method is safe to call from any thread, including the UI thread. |
| * |
| * @param contentResolver The content resolved. |
| * @param key Settings key to retrieve. |
| * @param defaultValue Default value, in milliseconds. |
| * @return The timeout value from Settings or the default value if it hasn't been changed. |
| */ |
| private static long get(ContentResolver contentResolver, String key, long defaultValue) { |
| return Settings.Secure.getLong(contentResolver, PREFIX + key, defaultValue); |
| } |
| |
| /** |
| * Returns the amount of time to wait before disconnecting a call that was canceled via |
| * NEW_OUTGOING_CALL broadcast. This timeout allows apps which repost the call using a gateway |
| * to reuse the existing call, preventing the call from causing a start->end->start jank in the |
| * in-call UI. |
| */ |
| public static long getNewOutgoingCallCancelMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "new_outgoing_call_cancel_ms", 500L); |
| } |
| |
| /** |
| * Returns the maximum amount of time to wait before disconnecting a call that was canceled via |
| * NEW_OUTGOING_CALL broadcast. This prevents malicious or poorly configured apps from |
| * forever tying up the Telecom stack. |
| */ |
| public static long getMaxNewOutgoingCallCancelMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "max_new_outgoing_call_cancel_ms", 10000L); |
| } |
| |
| /** |
| * Returns the amount of time to play each DTMF tone after post dial continue. |
| * This timeout allows the current tone to play for a certain amount of time before either being |
| * interrupted by the next tone or terminated. |
| */ |
| public static long getDelayBetweenDtmfTonesMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "delay_between_dtmf_tones_ms", 300L); |
| } |
| |
| /** |
| * Returns the amount of time to wait for an emergency call to be placed before routing to |
| * a different call service. A value of 0 or less means no timeout should be used. |
| */ |
| public static long getEmergencyCallTimeoutMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "emergency_call_timeout_millis", 25000L /* 25 seconds */); |
| } |
| |
| /** |
| * Returns the amount of time to wait for an emergency call to be placed before routing to |
| * a different call service. This timeout is used only when the radio is powered off (for |
| * example in airplane mode). A value of 0 or less means no timeout should be used. |
| */ |
| public static long getEmergencyCallTimeoutRadioOffMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "emergency_call_timeout_radio_off_millis", |
| 60000L /* 1 minute */); |
| } |
| |
| /** |
| * Returns the amount of delay before unbinding the in-call services after all the calls |
| * are removed. |
| */ |
| public static long getCallRemoveUnbindInCallServicesDelay(ContentResolver contentResolver) { |
| return get(contentResolver, "call_remove_unbind_in_call_services_delay", |
| 2000L /* 2 seconds */); |
| } |
| |
| /** |
| * Returns the amount of time for which bluetooth is considered connected after requesting |
| * connection. This compensates for the amount of time it takes for the audio route to |
| * actually change to bluetooth. |
| */ |
| public static long getBluetoothPendingTimeoutMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "bluetooth_pending_timeout_millis", 5000L); |
| } |
| |
| /** |
| * Returns the amount of time to wait before retrying the connectAudio call. This is |
| * necessary to account for the HeadsetStateMachine sometimes not being ready when we want to |
| * connect to bluetooth audio immediately after a device connects. |
| */ |
| public static long getRetryBluetoothConnectAudioBackoffMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "retry_bluetooth_connect_audio_backoff_millis", 500L); |
| } |
| |
| /** |
| * Returns the amount of time to wait for the call screening service to allow or disallow a |
| * call. |
| */ |
| public static long getCallScreeningTimeoutMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "call_screening_timeout", 5000L /* 5 seconds */); |
| } |
| |
| /** |
| * Returns the amount of time after an emergency call that incoming calls should be treated |
| * as potential emergency callbacks. |
| */ |
| public static long getEmergencyCallbackWindowMillis(ContentResolver contentResolver) { |
| return get(contentResolver, "emergency_callback_window_millis", |
| TimeUnit.MILLISECONDS.convert(5, TimeUnit.MINUTES)); |
| } |
| } |