HdmiPlaybackClient.java revision 8e93c84739902f5adaa499b474f39e3c4807bc1c 
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 android.hardware.hdmi;
18
19import android.annotation.SystemApi;
20import android.os.RemoteException;
21import android.util.Log;
22
23/**
24 * HdmiPlaybackClient represents HDMI-CEC logical device of type Playback
25 * in the Android system which acts as a playback device such as set-top box.
26 * It provides with methods that control, get information from TV/Display device
27 * connected through HDMI bus.
28 *
29 * @hide
30 */
31@SystemApi
32public final class HdmiPlaybackClient extends HdmiClient {
33    private static final String TAG = "HdmiPlaybackClient";
34
35    /**
36     * Listener used by the client to get the result of one touch play operation.
37     */
38    public interface OneTouchPlayCallback {
39        /**
40         * Called when the result of the feature one touch play is returned.
41         *
42         * @param result the result of the operation. {@link HdmiControlManager#RESULT_SUCCESS}
43         *         if successful.
44         */
45        public void onComplete(int result);
46    }
47
48    /**
49     * Listener used by the client to get display device status.
50     */
51    public interface DisplayStatusCallback {
52        /**
53         * Called when display device status is reported.
54         *
55         * @param status display device status
56         * @see {@link HdmiControlManager#POWER_STATUS_ON}
57         * @see {@link HdmiControlManager#POWER_STATUS_STANDBY}
58         * @see {@link HdmiControlManager#POWER_STATUS_TRANSIENT_TO_ON}
59         * @see {@link HdmiControlManager#POWER_STATUS_TRANSIENT_TO_STANDBY}
60         * @see {@link HdmiControlManager#POWER_STATUS_UNKNOWN}
61         */
62        public void onComplete(int status);
63    }
64
65    HdmiPlaybackClient(IHdmiControlService service) {
66        super(service);
67    }
68
69    /**
70     * Perform the feature 'one touch play' from playback device to turn on display
71     * and switch the input.
72     *
73     * @param callback {@link OneTouchPlayCallback} object to get informed
74     *         of the result
75     */
76    public void oneTouchPlay(OneTouchPlayCallback callback) {
77        // TODO: Use PendingResult.
78        try {
79            mService.oneTouchPlay(getCallbackWrapper(callback));
80        } catch (RemoteException e) {
81            Log.e(TAG, "oneTouchPlay threw exception ", e);
82        }
83    }
84
85    @Override
86    public int getDeviceType() {
87        return HdmiCecDeviceInfo.DEVICE_PLAYBACK;
88    }
89
90    /**
91     * Get the status of display device connected through HDMI bus.
92     *
93     * @param callback {@link DisplayStatusCallback} object to get informed
94     *         of the result
95     */
96    public void queryDisplayStatus(DisplayStatusCallback callback) {
97        try {
98            mService.queryDisplayStatus(getCallbackWrapper(callback));
99        } catch (RemoteException e) {
100            Log.e(TAG, "queryDisplayStatus threw exception ", e);
101        }
102    }
103
104    private IHdmiControlCallback getCallbackWrapper(final OneTouchPlayCallback callback) {
105        return new IHdmiControlCallback.Stub() {
106            @Override
107            public void onComplete(int result) {
108                callback.onComplete(result);
109            }
110        };
111    }
112
113    private IHdmiControlCallback getCallbackWrapper(final DisplayStatusCallback callback) {
114        return new IHdmiControlCallback.Stub() {
115            @Override
116            public void onComplete(int status) {
117                callback.onComplete(status);
118            }
119        };
120    }
121}
122