/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.hdmi;
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/**
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* Class that holds together the constants that may require per-product configuration.
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*/
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final class HdmiConfig {
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// Default timeout for the incoming command to arrive in response to a request.
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static final int TIMEOUT_MS = 2000;
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// IRT(Initiator Repetition Time) in millisecond as recommended in the standard.
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// Outgoing UCP commands, when in 'Press and Hold' mode, should be this much apart
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// from the adjacent one so as not to place unnecessarily heavy load on the CEC line.
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static final int IRT_MS = 300;
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// Number of retries for polling each device in device discovery phase after TV powers on
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// or HDMI control is enabled.
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static final int DEVICE_POLLING_RETRY = 1;
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// Number of retries for polling each device in periodic check (hotplug detection).
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static final int HOTPLUG_DETECTION_RETRY = 1;
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// Number of retries for polling each device in address allocation mechanism.
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static final int ADDRESS_ALLOCATION_RETRY = 3;
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// Number of retries for sendCommand in actions related to new device discovery.
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// Number 5 comes from 10 seconds for Chromecast preparation time.
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static final int TIMEOUT_RETRY = 5;
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// CEC spec said that it should try retransmission at least once.
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// The actual number of send request for a single command will be at most
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// RETRANSMISSION_COUNT + 1. Note that it affects only to normal commands
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// and polling message for logical address allocation and device discovery
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// action. They will have their own retransmission count.
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static final int RETRANSMISSION_COUNT = 1;
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// Do not export the CEC devices connected to a legacy HDMI switch. The usage of legacy
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// (non-CEC) switches is deprecated. They stop the correct operation of many mandatory
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// CEC features. If set to true, do not pass the list of CEC devices behind the legacy
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// switch since they won't be under control from TV.
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static final boolean HIDE_DEVICES_BEHIND_LEGACY_SWITCH = true;
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private HdmiConfig() { /* cannot be instantiated */ }
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}
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