HdmiCecLocalDevicePlayback.java revision 79c58a4b97f27ede6a1b680d2fece9c2a0edf7b7 
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;
21import android.os.RemoteException;
22import android.util.Slog;
23
24/**
25 * Represent a logical device of type Playback residing in Android system.
26 */
27final class HdmiCecLocalDevicePlayback extends HdmiCecLocalDevice {
28    private static final String TAG = "HdmiCecLocalDevicePlayback";
29
30    HdmiCecLocalDevicePlayback(HdmiControlService service) {
31        super(service, HdmiCec.DEVICE_PLAYBACK);
32    }
33
34    @Override
35    protected void onAddressAllocated(int logicalAddress) {
36        mService.sendCecCommand(HdmiCecMessageBuilder.buildReportPhysicalAddressCommand(
37                mAddress, mService.getPhysicalAddress(), mDeviceType));
38    }
39
40    void oneTouchPlay(IHdmiControlCallback callback) {
41        assertRunOnServiceThread();
42        if (hasAction(OneTouchPlayAction.class)) {
43            Slog.w(TAG, "oneTouchPlay already in progress");
44            invokeCallback(callback, HdmiCec.RESULT_ALREADY_IN_PROGRESS);
45            return;
46        }
47
48        // TODO: Consider the case of multiple TV sets. For now we always direct the command
49        //       to the primary one.
50        OneTouchPlayAction action = OneTouchPlayAction.create(this, HdmiCec.ADDR_TV, callback);
51        if (action == null) {
52            Slog.w(TAG, "Cannot initiate oneTouchPlay");
53            invokeCallback(callback, HdmiCec.RESULT_EXCEPTION);
54            return;
55        }
56        addAndStartAction(action);
57    }
58
59    void queryDisplayStatus(IHdmiControlCallback callback) {
60        assertRunOnServiceThread();
61        if (hasAction(DevicePowerStatusAction.class)) {
62            Slog.w(TAG, "queryDisplayStatus already in progress");
63            invokeCallback(callback, HdmiCec.RESULT_ALREADY_IN_PROGRESS);
64            return;
65        }
66        DevicePowerStatusAction action = DevicePowerStatusAction.create(this,
67                HdmiCec.ADDR_TV, callback);
68        if (action == null) {
69            Slog.w(TAG, "Cannot initiate queryDisplayStatus");
70            invokeCallback(callback, HdmiCec.RESULT_EXCEPTION);
71            return;
72        }
73        addAndStartAction(action);
74    }
75
76    private void invokeCallback(IHdmiControlCallback callback, int result) {
77        try {
78            callback.onComplete(result);
79        } catch (RemoteException e) {
80            Slog.e(TAG, "Invoking callback failed:" + e);
81        }
82    }
83
84    @Override
85    void onHotplug(int portId, boolean connected) {
86        // TODO: clear devices connected to the given port id.
87        mCecMessageCache.flushAll();
88    }
89}
90