HdmiCecLocalDevicePlayback.java revision a5b7414970c85217e88015e78ecbc5ba093dead3 
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
24import com.android.server.hdmi.HdmiAnnotations.ServiceThreadOnly;
25
26/**
27 * Represent a logical device of type Playback residing in Android system.
28 */
29final class HdmiCecLocalDevicePlayback extends HdmiCecLocalDevice {
30    private static final String TAG = "HdmiCecLocalDevicePlayback";
31
32    HdmiCecLocalDevicePlayback(HdmiControlService service) {
33        super(service, HdmiCec.DEVICE_PLAYBACK);
34    }
35
36    @Override
37    @ServiceThreadOnly
38    protected void onAddressAllocated(int logicalAddress) {
39        assertRunOnServiceThread();
40        mService.sendCecCommand(HdmiCecMessageBuilder.buildReportPhysicalAddressCommand(
41                mAddress, mService.getPhysicalAddress(), mDeviceType));
42    }
43
44    @ServiceThreadOnly
45    void oneTouchPlay(IHdmiControlCallback callback) {
46        assertRunOnServiceThread();
47        if (hasAction(OneTouchPlayAction.class)) {
48            Slog.w(TAG, "oneTouchPlay already in progress");
49            invokeCallback(callback, HdmiCec.RESULT_ALREADY_IN_PROGRESS);
50            return;
51        }
52
53        // TODO: Consider the case of multiple TV sets. For now we always direct the command
54        //       to the primary one.
55        OneTouchPlayAction action = OneTouchPlayAction.create(this, HdmiCec.ADDR_TV, callback);
56        if (action == null) {
57            Slog.w(TAG, "Cannot initiate oneTouchPlay");
58            invokeCallback(callback, HdmiCec.RESULT_EXCEPTION);
59            return;
60        }
61        addAndStartAction(action);
62    }
63
64    @ServiceThreadOnly
65    void queryDisplayStatus(IHdmiControlCallback callback) {
66        assertRunOnServiceThread();
67        if (hasAction(DevicePowerStatusAction.class)) {
68            Slog.w(TAG, "queryDisplayStatus already in progress");
69            invokeCallback(callback, HdmiCec.RESULT_ALREADY_IN_PROGRESS);
70            return;
71        }
72        DevicePowerStatusAction action = DevicePowerStatusAction.create(this,
73                HdmiCec.ADDR_TV, callback);
74        if (action == null) {
75            Slog.w(TAG, "Cannot initiate queryDisplayStatus");
76            invokeCallback(callback, HdmiCec.RESULT_EXCEPTION);
77            return;
78        }
79        addAndStartAction(action);
80    }
81
82    @ServiceThreadOnly
83    private void invokeCallback(IHdmiControlCallback callback, int result) {
84        assertRunOnServiceThread();
85        try {
86            callback.onComplete(result);
87        } catch (RemoteException e) {
88            Slog.e(TAG, "Invoking callback failed:" + e);
89        }
90    }
91
92    @Override
93    @ServiceThreadOnly
94    void onHotplug(int portId, boolean connected) {
95        assertRunOnServiceThread();
96        // TODO: clear devices connected to the given port id.
97        mCecMessageCache.flushAll();
98    }
99}
100