SystemAudioActionFromAvr.java revision 4d43d93743222311c6377d4904c19ccb93699d3b 
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 */
25// # Seq 33
26final class SystemAudioActionFromAvr extends SystemAudioAction {
27    /**
28     * Constructor
29     *
30     * @param source {@link HdmiCecLocalDevice} instance
31     * @param avrAddress logical address of AVR device
32     * @param targetStatus Whether to enable the system audio mode or not
33     * @param callback callback interface to be notified when it's done
34     * @throw IllegalArugmentException if device type of tvAddress and avrAddress is invalid
35     */
36    SystemAudioActionFromAvr(HdmiCecLocalDevice source, int avrAddress,
37            boolean targetStatus, IHdmiControlCallback callback) {
38        super(source, avrAddress, targetStatus, callback);
39        HdmiUtils.verifyAddressType(getSourceAddress(), HdmiCec.DEVICE_TV);
40    }
41
42    @Override
43    boolean start() {
44        removeSystemAudioActionInProgress();
45        handleSystemAudioActionFromAvr();
46        return true;
47    }
48
49    private void handleSystemAudioActionFromAvr() {
50        if (mTargetAudioStatus == tv().getSystemAudioMode()) {
51            finishWithCallback(HdmiCec.RESULT_SUCCESS);
52            return;
53        }
54        if (tv().isProhibitMode()) {
55            sendCommand(HdmiCecMessageBuilder.buildFeatureAbortCommand(
56                    getSourceAddress(), mAvrLogicalAddress,
57                    HdmiCec.MESSAGE_SET_SYSTEM_AUDIO_MODE, HdmiConstants.ABORT_REFUSED));
58            mTargetAudioStatus = false;
59            sendSystemAudioModeRequest();
60            return;
61        }
62
63        removeAction(SystemAudioAutoInitiationAction.class);
64
65        if (mTargetAudioStatus) {
66            setSystemAudioMode(true);
67            startAudioStatusAction();
68        } else {
69            setSystemAudioMode(false);
70            finishWithCallback(HdmiCec.RESULT_SUCCESS);
71        }
72    }
73}
74