HdmiCecLocalDevicePlayback.java revision 38db629d897e9d7c8e31ce0a7e985981e3e12996 
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.HdmiCecMessage;
21import android.hardware.hdmi.IHdmiControlCallback;
22import android.os.RemoteException;
23import android.util.Slog;
24
25import com.android.server.hdmi.HdmiAnnotations.ServiceThreadOnly;
26
27/**
28 * Represent a logical device of type Playback residing in Android system.
29 */
30final class HdmiCecLocalDevicePlayback extends HdmiCecLocalDevice {
31    private static final String TAG = "HdmiCecLocalDevicePlayback";
32
33    private boolean mIsActiveSource = false;
34
35    HdmiCecLocalDevicePlayback(HdmiControlService service) {
36        super(service, HdmiCec.DEVICE_PLAYBACK);
37    }
38
39    @Override
40    @ServiceThreadOnly
41    protected void onAddressAllocated(int logicalAddress) {
42        assertRunOnServiceThread();
43        mService.sendCecCommand(HdmiCecMessageBuilder.buildReportPhysicalAddressCommand(
44                mAddress, mService.getPhysicalAddress(), mDeviceType));
45    }
46
47    @ServiceThreadOnly
48    void oneTouchPlay(IHdmiControlCallback callback) {
49        assertRunOnServiceThread();
50        if (hasAction(OneTouchPlayAction.class)) {
51            Slog.w(TAG, "oneTouchPlay already in progress");
52            invokeCallback(callback, HdmiCec.RESULT_ALREADY_IN_PROGRESS);
53            return;
54        }
55
56        // TODO: Consider the case of multiple TV sets. For now we always direct the command
57        //       to the primary one.
58        OneTouchPlayAction action = OneTouchPlayAction.create(this, HdmiCec.ADDR_TV, callback);
59        if (action == null) {
60            Slog.w(TAG, "Cannot initiate oneTouchPlay");
61            invokeCallback(callback, HdmiCec.RESULT_EXCEPTION);
62            return;
63        }
64        addAndStartAction(action);
65    }
66
67    @ServiceThreadOnly
68    void queryDisplayStatus(IHdmiControlCallback callback) {
69        assertRunOnServiceThread();
70        if (hasAction(DevicePowerStatusAction.class)) {
71            Slog.w(TAG, "queryDisplayStatus already in progress");
72            invokeCallback(callback, HdmiCec.RESULT_ALREADY_IN_PROGRESS);
73            return;
74        }
75        DevicePowerStatusAction action = DevicePowerStatusAction.create(this,
76                HdmiCec.ADDR_TV, callback);
77        if (action == null) {
78            Slog.w(TAG, "Cannot initiate queryDisplayStatus");
79            invokeCallback(callback, HdmiCec.RESULT_EXCEPTION);
80            return;
81        }
82        addAndStartAction(action);
83    }
84
85    @ServiceThreadOnly
86    private void invokeCallback(IHdmiControlCallback callback, int result) {
87        assertRunOnServiceThread();
88        try {
89            callback.onComplete(result);
90        } catch (RemoteException e) {
91            Slog.e(TAG, "Invoking callback failed:" + e);
92        }
93    }
94
95    @Override
96    @ServiceThreadOnly
97    void onHotplug(int portId, boolean connected) {
98        assertRunOnServiceThread();
99        mCecMessageCache.flushAll();
100        mIsActiveSource = false;
101        if (connected && mService.isPowerStandbyOrTransient()) {
102            mService.wakeUp();
103        }
104    }
105
106    @ServiceThreadOnly
107    void markActiveSource() {
108        assertRunOnServiceThread();
109        mIsActiveSource = true;
110    }
111
112    @Override
113    @ServiceThreadOnly
114    protected boolean handleActiveSource(HdmiCecMessage message) {
115        assertRunOnServiceThread();
116        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
117        if (physicalAddress != mService.getPhysicalAddress()) {
118            mIsActiveSource = false;
119            if (mService.isPowerOnOrTransient()) {
120                mService.standby();
121            }
122            return true;
123        }
124        return false;
125    }
126
127    @Override
128    @ServiceThreadOnly
129    protected boolean handleSetStreamPath(HdmiCecMessage message) {
130        assertRunOnServiceThread();
131        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
132        if (physicalAddress == mService.getPhysicalAddress()) {
133            if (mService.isPowerStandbyOrTransient()) {
134                mService.wakeUp();
135            }
136            return true;
137        }
138        return false;
139    }
140
141    @Override
142    @ServiceThreadOnly
143    protected void onTransitionToStandby(boolean initiatedByCec) {
144        assertRunOnServiceThread();
145        if (!initiatedByCec && mIsActiveSource) {
146            mService.sendCecCommand(HdmiCecMessageBuilder.buildInactiveSource(
147                    mAddress, mService.getPhysicalAddress()));
148        }
149        mIsActiveSource = false;
150        checkIfPendingActionsCleared();
151    }
152}
153