HdmiCecLocalDevicePlayback.java revision 8913a0e1e8559d96e82b1ff408dd312ed279021b 
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.PowerManager;
23import android.os.PowerManager.WakeLock;
24import android.os.RemoteException;
25import android.os.SystemProperties;
26import android.util.Slog;
27
28import com.android.internal.util.IndentingPrintWriter;
29import com.android.server.hdmi.HdmiAnnotations.ServiceThreadOnly;
30
31/**
32 * Represent a logical device of type Playback residing in Android system.
33 */
34final class HdmiCecLocalDevicePlayback extends HdmiCecLocalDevice {
35    private static final String TAG = "HdmiCecLocalDevicePlayback";
36
37    private boolean mIsActiveSource = false;
38
39    // Used to keep the device awake while it is the active source. For devices that
40    // cannot wake up via CEC commands, this address the inconvenience of having to
41    // turn them on.
42    // Lazily initialized - should call getWakeLock() to get the instance.
43    private WakeLock mWakeLock;
44
45    HdmiCecLocalDevicePlayback(HdmiControlService service) {
46        super(service, HdmiDeviceInfo.DEVICE_PLAYBACK);
47    }
48
49    @Override
50    @ServiceThreadOnly
51    protected void onAddressAllocated(int logicalAddress, int reason) {
52        assertRunOnServiceThread();
53        mService.sendCecCommand(HdmiCecMessageBuilder.buildReportPhysicalAddressCommand(
54                mAddress, mService.getPhysicalAddress(), mDeviceType));
55        mService.sendCecCommand(HdmiCecMessageBuilder.buildDeviceVendorIdCommand(
56                mAddress, mService.getVendorId()));
57        startQueuedActions();
58
59        // Switch TV input after bootup.
60        setActiveSource(true);
61        maySendActiveSource(Constants.ADDR_TV);
62    }
63
64    @Override
65    @ServiceThreadOnly
66    protected int getPreferredAddress() {
67        assertRunOnServiceThread();
68        return SystemProperties.getInt(Constants.PROPERTY_PREFERRED_ADDRESS_PLAYBACK,
69                Constants.ADDR_UNREGISTERED);
70    }
71
72    @Override
73    @ServiceThreadOnly
74    protected void setPreferredAddress(int addr) {
75        assertRunOnServiceThread();
76        SystemProperties.set(Constants.PROPERTY_PREFERRED_ADDRESS_PLAYBACK,
77                String.valueOf(addr));
78    }
79
80    @ServiceThreadOnly
81    void oneTouchPlay(IHdmiControlCallback callback) {
82        assertRunOnServiceThread();
83        if (hasAction(OneTouchPlayAction.class)) {
84            Slog.w(TAG, "oneTouchPlay already in progress");
85            invokeCallback(callback, HdmiControlManager.RESULT_ALREADY_IN_PROGRESS);
86            return;
87        }
88
89        // TODO: Consider the case of multiple TV sets. For now we always direct the command
90        //       to the primary one.
91        OneTouchPlayAction action = OneTouchPlayAction.create(this, Constants.ADDR_TV,
92                callback);
93        if (action == null) {
94            Slog.w(TAG, "Cannot initiate oneTouchPlay");
95            invokeCallback(callback, HdmiControlManager.RESULT_EXCEPTION);
96            return;
97        }
98        addAndStartAction(action);
99    }
100
101    @ServiceThreadOnly
102    void queryDisplayStatus(IHdmiControlCallback callback) {
103        assertRunOnServiceThread();
104        if (hasAction(DevicePowerStatusAction.class)) {
105            Slog.w(TAG, "queryDisplayStatus already in progress");
106            invokeCallback(callback, HdmiControlManager.RESULT_ALREADY_IN_PROGRESS);
107            return;
108        }
109        DevicePowerStatusAction action = DevicePowerStatusAction.create(this,
110                Constants.ADDR_TV, callback);
111        if (action == null) {
112            Slog.w(TAG, "Cannot initiate queryDisplayStatus");
113            invokeCallback(callback, HdmiControlManager.RESULT_EXCEPTION);
114            return;
115        }
116        addAndStartAction(action);
117    }
118
119    @ServiceThreadOnly
120    private void invokeCallback(IHdmiControlCallback callback, int result) {
121        assertRunOnServiceThread();
122        try {
123            callback.onComplete(result);
124        } catch (RemoteException e) {
125            Slog.e(TAG, "Invoking callback failed:" + e);
126        }
127    }
128
129    @Override
130    @ServiceThreadOnly
131    void onHotplug(int portId, boolean connected) {
132        assertRunOnServiceThread();
133        mCecMessageCache.flushAll();
134        // We'll not clear mIsActiveSource on the hotplug event to pass CETC 11.2.2-2 ~ 3.
135        if (connected && mService.isPowerStandbyOrTransient()) {
136            mService.wakeUp();
137        }
138        if (!connected) {
139            getWakeLock().release();
140        }
141    }
142
143    @ServiceThreadOnly
144    void setActiveSource(boolean on) {
145        assertRunOnServiceThread();
146        mIsActiveSource = on;
147        if (on) {
148            getWakeLock().acquire();
149            HdmiLogger.debug("active source: %b. Wake lock acquired", mIsActiveSource);
150        } else {
151            getWakeLock().release();
152            HdmiLogger.debug("Wake lock released");
153        }
154    }
155
156    @ServiceThreadOnly
157    private WakeLock getWakeLock() {
158        assertRunOnServiceThread();
159        if (mWakeLock == null) {
160            mWakeLock = mService.getPowerManager().newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
161            mWakeLock.setReferenceCounted(false);
162        }
163        return mWakeLock;
164    }
165
166    @Override
167    protected boolean canGoToStandby() {
168        return !getWakeLock().isHeld();
169    }
170
171    @Override
172    @ServiceThreadOnly
173    protected boolean handleActiveSource(HdmiCecMessage message) {
174        assertRunOnServiceThread();
175        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
176        mayResetActiveSource(physicalAddress);
177        return true;  // Broadcast message.
178    }
179
180    private void mayResetActiveSource(int physicalAddress) {
181        if (physicalAddress != mService.getPhysicalAddress()) {
182            setActiveSource(false);
183        }
184    }
185
186    @Override
187    @ServiceThreadOnly
188    protected boolean handleSetStreamPath(HdmiCecMessage message) {
189        assertRunOnServiceThread();
190        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
191        maySetActiveSource(physicalAddress);
192        maySendActiveSource(message.getSource());
193        wakeUpIfActiveSource();
194        return true;  // Broadcast message.
195    }
196
197    // Samsung model we tested sends <Routing Change> and <Request Active Source>
198    // in a row, and then changes the input to the internal source if there is no
199    // <Active Source> in response. To handle this, we'll set ActiveSource aggressively.
200    @Override
201    @ServiceThreadOnly
202    protected boolean handleRoutingChange(HdmiCecMessage message) {
203        assertRunOnServiceThread();
204        int newPath = HdmiUtils.twoBytesToInt(message.getParams(), 2);
205        maySetActiveSource(newPath);
206        return true;  // Broadcast message.
207    }
208
209    @Override
210    @ServiceThreadOnly
211    protected boolean handleRoutingInformation(HdmiCecMessage message) {
212        assertRunOnServiceThread();
213        int physicalAddress = HdmiUtils.twoBytesToInt(message.getParams());
214        maySetActiveSource(physicalAddress);
215        return true;  // Broadcast message.
216    }
217
218    private void maySetActiveSource(int physicalAddress) {
219        setActiveSource(physicalAddress == mService.getPhysicalAddress());
220    }
221
222    private void wakeUpIfActiveSource() {
223        if (mIsActiveSource && mService.isPowerStandbyOrTransient()) {
224            mService.wakeUp();
225        }
226    }
227
228    private void maySendActiveSource(int dest) {
229        if (mIsActiveSource) {
230            mService.sendCecCommand(HdmiCecMessageBuilder.buildActiveSource(
231                    mAddress, mService.getPhysicalAddress()));
232            // Always reports menu-status active to receive RCP.
233            mService.sendCecCommand(HdmiCecMessageBuilder.buildReportMenuStatus(
234                    mAddress, dest, Constants.MENU_STATE_ACTIVATED));
235        }
236    }
237
238    @Override
239    @ServiceThreadOnly
240    protected boolean handleRequestActiveSource(HdmiCecMessage message) {
241        assertRunOnServiceThread();
242        maySendActiveSource(message.getSource());
243        return true;  // Broadcast message.
244    }
245
246    @Override
247    @ServiceThreadOnly
248    protected void disableDevice(boolean initiatedByCec, PendingActionClearedCallback callback) {
249        super.disableDevice(initiatedByCec, callback);
250
251        assertRunOnServiceThread();
252        if (!initiatedByCec && mIsActiveSource) {
253            mService.sendCecCommand(HdmiCecMessageBuilder.buildInactiveSource(
254                    mAddress, mService.getPhysicalAddress()));
255        }
256        setActiveSource(false);
257        checkIfPendingActionsCleared();
258    }
259
260    @Override
261    protected void dump(final IndentingPrintWriter pw) {
262        super.dump(pw);
263        pw.println("mIsActiveSource: " + mIsActiveSource);
264    }
265}
266