content: /*
   * 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.hdmi;
  
  /**
   * Class that holds together the constants that may require per-product configuration.
   */
  final class HdmiConfig {
  
      // Default timeout for the incoming command to arrive in response to a request.
      static final int TIMEOUT_MS = 2000;
  
      // IRT(Initiator Repetition Time) in millisecond as recommended in the standard.
      // Outgoing UCP commands, when in 'Press and Hold' mode, should be this much apart
      // from the adjacent one so as not to place unnecessarily heavy load on the CEC line.
      static final int IRT_MS = 300;
  
      // Number of retries for polling each device in device discovery phase after TV powers on
      // or HDMI control is enabled.
      static final int DEVICE_POLLING_RETRY = 1;
  
      // Number of retries for polling each device in periodic check (hotplug detection).
      static final int HOTPLUG_DETECTION_RETRY = 1;
  
      // Number of retries for polling each device in address allocation mechanism.
      static final int ADDRESS_ALLOCATION_RETRY = 3;
  
      // Number of retries for sendCommand in actions related to new device discovery.
      // Number 5 comes from 10 seconds for Chromecast preparation time.
      static final int TIMEOUT_RETRY = 5;
  
      // CEC spec said that it should try retransmission at least once.
      // The actual number of send request for a single command will be at most
      // RETRANSMISSION_COUNT + 1. Note that it affects only to normal commands
      // and polling message for logical address allocation and device discovery
      // action. They will have their own retransmission count.
      static final int RETRANSMISSION_COUNT = 1;
  
      // Do not export the CEC devices connected to a legacy HDMI switch. The usage of legacy
      // (non-CEC) switches is deprecated. They stop the correct operation of many mandatory
      // CEC features. If set to true, do not pass the list of CEC devices behind the legacy
      // switch since they won't be under control from TV.
      static final boolean HIDE_DEVICES_BEHIND_LEGACY_SWITCH = true;
  
      private HdmiConfig() { /* cannot be instantiated */ }
  }
  