SystemAudioActionFromAvr.java revision ea67c183fe5511ad99aeaae1a32b5245bd020e36 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.server.hdmi;
18
19import android.hardware.hdmi.HdmiCec;
20import android.hardware.hdmi.IHdmiControlCallback;
21
22/**
23 * Feature action that handles System Audio initiated by AVR devices.
24 */
25final class SystemAudioActionFromAvr extends SystemAudioAction {
26    /**
27     * Constructor
28     *
29     * @param source {@link HdmiCecLocalDevice} instance
30     * @param avrAddress logical address of AVR device
31     * @param targetStatus Whether to enable the system audio mode or not
32     * @param callback callback interface to be notified when it's done
33     * @throw IllegalArugmentException if device type of tvAddress and avrAddress is invalid
34     */
35    SystemAudioActionFromAvr(HdmiCecLocalDevice source, int avrAddress,
36            boolean targetStatus, IHdmiControlCallback callback) {
37        super(source, avrAddress, targetStatus, callback);
38        HdmiUtils.verifyAddressType(getSourceAddress(), HdmiCec.DEVICE_TV);
39    }
40
41    @Override
42    boolean start() {
43        removeSystemAudioActionInProgress();
44        handleSystemAudioActionFromAvr();
45        return true;
46    }
47
48    private void handleSystemAudioActionFromAvr() {
49        if (mTargetAudioStatus == tv().getSystemAudioMode()) {
50            finishWithCallback(HdmiCec.RESULT_SUCCESS);
51            return;
52        }
53        if (tv().isInPresetInstallationMode()) {
54            sendCommand(HdmiCecMessageBuilder.buildFeatureAbortCommand(
55                    getSourceAddress(), mAvrLogicalAddress,
56                    HdmiCec.MESSAGE_SET_SYSTEM_AUDIO_MODE, HdmiConstants.ABORT_REFUSED));
57            mTargetAudioStatus = false;
58            sendSystemAudioModeRequest();
59            return;
60        }
61        // TODO: Stop the action for System Audio Mode initialization if it is running.
62        if (mTargetAudioStatus) {
63            setSystemAudioMode(true);
64            startAudioStatusAction();
65        } else {
66            setSystemAudioMode(false);
67            finishWithCallback(HdmiCec.RESULT_SUCCESS);
68        }
69    }
70}
71