HdmiCecLocalDevicePlayback.java revision eaab72ac4198fcc02090da11b1e942e6e338696a 
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.HdmiControlManager;
20import android.hardware.hdmi.HdmiDeviceInfo;
21import android.hardware.hdmi.IHdmiControlCallback;
22import android.os.RemoteException;
23import android.os.SystemProperties;
24import android.util.Slog;
25
26import com.android.internal.util.IndentingPrintWriter;
27import com.android.server.hdmi.HdmiAnnotations.ServiceThreadOnly;
28
29/**
30 * Represent a logical device of type Playback residing in Android system.
31 */
32final class HdmiCecLocalDevicePlayback extends HdmiCecLocalDevice {
33    private static final String TAG = "HdmiCecLocalDevicePlayback";
34
35    private boolean mIsActiveSource = false;
36
37    HdmiCecLocalDevicePlayback(HdmiControlService service) {
38        super(service, HdmiDeviceInfo.DEVICE_PLAYBACK);
39    }
40
41    @Override
42    void init() {
43        super.init();
44        mIsActiveSource = false;
45    }
46
47    @Override
48    @ServiceThreadOnly
49    protected void onAddressAllocated(int logicalAddress, int reason) {
50        assertRunOnServiceThread();
51        mService.sendCecCommand(HdmiCecMessageBuilder.buildReportPhysicalAddressCommand(
52                mAddress, mService.getPhysicalAddress(), mDeviceType));
53        startQueuedActions();
54    }
55
56    @Override
57    @ServiceThreadOnly
58    protected int getPreferredAddress() {
59        assertRunOnServiceThread();
60        return SystemProperties.getInt(Constants.PROPERTY_PREFERRED_ADDRESS_PLAYBACK,
61                Constants.ADDR_UNREGISTERED);
62    }
63
64    @Override
65    @ServiceThreadOnly
66    protected void setPreferredAddress(int addr) {
67        assertRunOnServiceThread();
68        SystemProperties.set(Constants.PROPERTY_PREFERRED_ADDRESS_PLAYBACK,
69                String.valueOf(addr));
70    }
71
72    @ServiceThreadOnly
73    void oneTouchPlay(IHdmiControlCallback callback) {
74        assertRunOnServiceThread();
75        if (hasAction(OneTouchPlayAction.class)) {
76            Slog.w(TAG, "oneTouchPlay already in progress");
77            invokeCallback(callback, HdmiControlManager.RESULT_ALREADY_IN_PROGRESS);
78            return;
79        }
80
81        // TODO: Consider the case of multiple TV sets. For now we always direct the command
82        //       to the primary one.
83        OneTouchPlayAction action = OneTouchPlayAction.create(this, Constants.ADDR_TV,
84                callback);
85        if (action == null) {
86            Slog.w(TAG, "Cannot initiate oneTouchPlay");
87            invokeCallback(callback, HdmiControlManager.RESULT_EXCEPTION);
88            return;
89        }
90        addAndStartAction(action);
91    }
92
93    @ServiceThreadOnly
94    void queryDisplayStatus(IHdmiControlCallback callback) {
95        assertRunOnServiceThread();
96        if (hasAction(DevicePowerStatusAction.class)) {
97            Slog.w(TAG, "queryDisplayStatus already in progress");
98            invokeCallback(callback, HdmiControlManager.RESULT_ALREADY_IN_PROGRESS);
99            return;
100        }
101        DevicePowerStatusAction action = DevicePowerStatusAction.create(this,
102                Constants.ADDR_TV, callback);
103        if (action == null) {
104            Slog.w(TAG, "Cannot initiate queryDisplayStatus");
105            invokeCallback(callback, HdmiControlManager.RESULT_EXCEPTION);
106            return;
107        }
108        addAndStartAction(action);
109    }
110
111    @ServiceThreadOnly
112    private void invokeCallback(IHdmiControlCallback callback, int result) {
113        assertRunOnServiceThread();
114        try {
115            callback.onComplete(result);
116        } catch (RemoteException e) {
117            Slog.e(TAG, "Invoking callback failed:" + e);
118        }
119    }
120
121    @Override
122    @ServiceThreadOnly
123    void onHotplug(int portId, boolean connected) {
124        assertRunOnServiceThread();
125        mCecMessageCache.flushAll();
126        // We'll not clear mIsActiveSource on the hotplug event to pass CETC 11.2.2-2 ~ 3.
127        if (connected && mService.isPowerStandbyOrTransient()) {
128            mService.wakeUp();
129        }
130    }
131
132    @ServiceThreadOnly
133    void markActiveSource() {
134        assertRunOnServiceThread();
135        mIsActiveSource = true;
136    }
137
138    @Override
139    @ServiceThreadOnly
140    protected boolean handleActiveSource(HdmiCecMessage message) {
141        assertRunOnServiceThread();
142        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
143        mayResetActiveSource(physicalAddress);
144        return true;  // Broadcast message.
145    }
146
147    private void mayResetActiveSource(int physicalAddress) {
148        if (physicalAddress != mService.getPhysicalAddress()) {
149            mIsActiveSource = false;
150        }
151    }
152
153    @Override
154    @ServiceThreadOnly
155    protected boolean handleSetStreamPath(HdmiCecMessage message) {
156        assertRunOnServiceThread();
157        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
158        maySetActiveSource(physicalAddress);
159        maySendActiveSource();
160        wakeUpIfActiveSource();
161        return true;  // Broadcast message.
162    }
163
164    // Samsung model, we tested, sends <RoutingChange> and <RequestActiveSource> consecutively,
165    // Then if there is no <ActiveSource> response, it will change the input to
166    // the internal source.  To handle this, we'll set ActiveSource aggressively.
167    @Override
168    @ServiceThreadOnly
169    protected boolean handleRoutingChange(HdmiCecMessage message) {
170        assertRunOnServiceThread();
171        int newPath = HdmiUtils.twoBytesToInt(message.getParams(), 2);
172        maySetActiveSource(newPath);
173        return true;  // Broadcast message.
174    }
175
176    @Override
177    @ServiceThreadOnly
178    protected boolean handleRoutingInformation(HdmiCecMessage message) {
179        assertRunOnServiceThread();
180        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
181        maySetActiveSource(physicalAddress);
182        return true;  // Broadcast message.
183    }
184
185    private void maySetActiveSource(int physicalAddress) {
186        if (physicalAddress == mService.getPhysicalAddress()) {
187            mIsActiveSource = true;
188        } else {
189            mIsActiveSource = false;
190        }
191    }
192
193    private void wakeUpIfActiveSource() {
194        if (mIsActiveSource && mService.isPowerStandbyOrTransient()) {
195            mService.wakeUp();
196        }
197    }
198
199    private void maySendActiveSource() {
200        if (mIsActiveSource) {
201            mService.sendCecCommand(HdmiCecMessageBuilder.buildActiveSource(
202                    mAddress, mService.getPhysicalAddress()));
203        }
204    }
205
206    @Override
207    @ServiceThreadOnly
208    protected boolean handleRequestActiveSource(HdmiCecMessage message) {
209        assertRunOnServiceThread();
210        maySendActiveSource();
211        return true;  // Broadcast message.
212    }
213
214    @Override
215    @ServiceThreadOnly
216    protected void disableDevice(boolean initiatedByCec, PendingActionClearedCallback callback) {
217        super.disableDevice(initiatedByCec, callback);
218
219        assertRunOnServiceThread();
220        if (!initiatedByCec && mIsActiveSource) {
221            mService.sendCecCommand(HdmiCecMessageBuilder.buildInactiveSource(
222                    mAddress, mService.getPhysicalAddress()));
223        }
224        mIsActiveSource = false;
225        checkIfPendingActionsCleared();
226    }
227
228    @Override
229    protected void dump(final IndentingPrintWriter pw) {
230        super.dump(pw);
231        pw.println("mIsActiveSource: " + mIsActiveSource);
232    }
233}