HdmiCecLocalDevicePlayback.java revision af2acf0447aff34450cde2bcfb35dff9cf631729 
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.HdmiCecDeviceInfo;
20import android.hardware.hdmi.HdmiControlManager;
21import android.hardware.hdmi.IHdmiControlCallback;
22import android.os.RemoteException;
23import android.os.SystemProperties;
24import android.util.Slog;
25
26import com.android.server.hdmi.HdmiAnnotations.ServiceThreadOnly;
27
28/**
29 * Represent a logical device of type Playback residing in Android system.
30 */
31final class HdmiCecLocalDevicePlayback extends HdmiCecLocalDevice {
32    private static final String TAG = "HdmiCecLocalDevicePlayback";
33
34    private boolean mIsActiveSource = false;
35
36    HdmiCecLocalDevicePlayback(HdmiControlService service) {
37        super(service, HdmiCecDeviceInfo.DEVICE_PLAYBACK);
38    }
39
40    @Override
41    @ServiceThreadOnly
42    protected void onAddressAllocated(int logicalAddress, boolean fromBootup) {
43        assertRunOnServiceThread();
44        mService.sendCecCommand(HdmiCecMessageBuilder.buildReportPhysicalAddressCommand(
45                mAddress, mService.getPhysicalAddress(), mDeviceType));
46    }
47
48    @Override
49    @ServiceThreadOnly
50    protected int getPreferredAddress() {
51        assertRunOnServiceThread();
52        return SystemProperties.getInt(Constants.PROPERTY_PREFERRED_ADDRESS_PLAYBACK,
53                Constants.ADDR_UNREGISTERED);
54    }
55
56    @Override
57    @ServiceThreadOnly
58    protected void setPreferredAddress(int addr) {
59        assertRunOnServiceThread();
60        SystemProperties.set(Constants.PROPERTY_PREFERRED_ADDRESS_PLAYBACK,
61                String.valueOf(addr));
62    }
63
64    @ServiceThreadOnly
65    void oneTouchPlay(IHdmiControlCallback callback) {
66        assertRunOnServiceThread();
67        if (hasAction(OneTouchPlayAction.class)) {
68            Slog.w(TAG, "oneTouchPlay already in progress");
69            invokeCallback(callback, HdmiControlManager.RESULT_ALREADY_IN_PROGRESS);
70            return;
71        }
72
73        // TODO: Consider the case of multiple TV sets. For now we always direct the command
74        //       to the primary one.
75        OneTouchPlayAction action = OneTouchPlayAction.create(this, Constants.ADDR_TV,
76                callback);
77        if (action == null) {
78            Slog.w(TAG, "Cannot initiate oneTouchPlay");
79            invokeCallback(callback, HdmiControlManager.RESULT_EXCEPTION);
80            return;
81        }
82        addAndStartAction(action);
83    }
84
85    @ServiceThreadOnly
86    void queryDisplayStatus(IHdmiControlCallback callback) {
87        assertRunOnServiceThread();
88        if (hasAction(DevicePowerStatusAction.class)) {
89            Slog.w(TAG, "queryDisplayStatus already in progress");
90            invokeCallback(callback, HdmiControlManager.RESULT_ALREADY_IN_PROGRESS);
91            return;
92        }
93        DevicePowerStatusAction action = DevicePowerStatusAction.create(this,
94                Constants.ADDR_TV, callback);
95        if (action == null) {
96            Slog.w(TAG, "Cannot initiate queryDisplayStatus");
97            invokeCallback(callback, HdmiControlManager.RESULT_EXCEPTION);
98            return;
99        }
100        addAndStartAction(action);
101    }
102
103    @ServiceThreadOnly
104    private void invokeCallback(IHdmiControlCallback callback, int result) {
105        assertRunOnServiceThread();
106        try {
107            callback.onComplete(result);
108        } catch (RemoteException e) {
109            Slog.e(TAG, "Invoking callback failed:" + e);
110        }
111    }
112
113    @Override
114    @ServiceThreadOnly
115    void onHotplug(int portId, boolean connected) {
116        assertRunOnServiceThread();
117        mCecMessageCache.flushAll();
118        mIsActiveSource = false;
119        if (connected && mService.isPowerStandbyOrTransient()) {
120            mService.wakeUp();
121        }
122    }
123
124    @ServiceThreadOnly
125    void markActiveSource() {
126        assertRunOnServiceThread();
127        mIsActiveSource = true;
128    }
129
130    @Override
131    @ServiceThreadOnly
132    protected boolean handleActiveSource(HdmiCecMessage message) {
133        assertRunOnServiceThread();
134        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
135        if (physicalAddress != mService.getPhysicalAddress()) {
136            mIsActiveSource = false;
137            if (mService.isPowerOnOrTransient()) {
138                mService.standby();
139            }
140            return true;
141        }
142        return false;
143    }
144
145    @Override
146    @ServiceThreadOnly
147    protected boolean handleSetStreamPath(HdmiCecMessage message) {
148        assertRunOnServiceThread();
149        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
150        if (physicalAddress == mService.getPhysicalAddress()) {
151            if (mService.isPowerStandbyOrTransient()) {
152                mService.wakeUp();
153            }
154            return true;
155        }
156        return false;
157    }
158
159    @Override
160    @ServiceThreadOnly
161    protected void disableDevice(boolean initiatedByCec, PendingActionClearedCallback callback) {
162        super.disableDevice(initiatedByCec, callback);
163
164        assertRunOnServiceThread();
165        if (!initiatedByCec && mIsActiveSource) {
166            mService.sendCecCommand(HdmiCecMessageBuilder.buildInactiveSource(
167                    mAddress, mService.getPhysicalAddress()));
168        }
169        mIsActiveSource = false;
170        checkIfPendingActionsCleared();
171    }
172}
173