/*
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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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import android.hardware.hdmi.HdmiDeviceInfo;
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/**
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* Base feature action class for <Request ARC Initiation>/<Request ARC Termination>.
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*/
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abstract class RequestArcAction extends HdmiCecFeatureAction {
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private static final String TAG = "RequestArcAction";
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// State in which waits for ARC response.
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protected static final int STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE = 1;
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// Logical address of AV Receiver.
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protected final int mAvrAddress;
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/**
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* @Constructor
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*
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* @param source {@link HdmiCecLocalDevice} instance
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* @param avrAddress address of AV receiver. It should be AUDIO_SYSTEM type
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* @throws IllegalArgumentException if device type of sourceAddress and avrAddress
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* is invalid
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*/
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RequestArcAction(HdmiCecLocalDevice source, int avrAddress) {
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super(source);
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HdmiUtils.verifyAddressType(getSourceAddress(), HdmiDeviceInfo.DEVICE_TV);
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HdmiUtils.verifyAddressType(avrAddress, HdmiDeviceInfo.DEVICE_AUDIO_SYSTEM);
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mAvrAddress = avrAddress;
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}
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@Override
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boolean processCommand(HdmiCecMessage cmd) {
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if (mState != STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE
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|| !HdmiUtils.checkCommandSource(cmd, mAvrAddress, TAG)) {
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return false;
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}
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int opcode = cmd.getOpcode();
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switch (opcode) {
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// Handles only <Feature Abort> here and, both <Initiate ARC> and <Terminate ARC>
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// are handled in HdmiControlService itself because both can be
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// received without <Request ARC Initiation> or <Request ARC Termination>.
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case Constants.MESSAGE_FEATURE_ABORT:
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int originalOpcode = cmd.getParams()[0] & 0xFF;
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if (originalOpcode == Constants.MESSAGE_REQUEST_ARC_TERMINATION) {
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disableArcTransmission();
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finish();
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return true;
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} else if (originalOpcode == Constants.MESSAGE_REQUEST_ARC_INITIATION) {
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tv().setArcStatus(false);
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finish();
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return true;
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}
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return false;
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}
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return false;
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}
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protected final void disableArcTransmission() {
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// Start Set ARC Transmission State action.
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SetArcTransmissionStateAction action = new SetArcTransmissionStateAction(localDevice(),
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mAvrAddress, false);
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addAndStartAction(action);
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}
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@Override
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final void handleTimerEvent(int state) {
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if (mState != state || state != STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE) {
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return;
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}
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HdmiLogger.debug("[T] RequestArcAction.");
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disableArcTransmission();
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finish();
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}
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}
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