| /* |
| * 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 */ } |
| } |