TimerRecordingAction.java revision e5a9337ebe738633cf7b66141cdf76efcdc5754c 
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 static android.hardware.hdmi.HdmiControlManager.TIMER_RECORDING_RESULT_EXTRA_CHECK_RECORDER_CONNECTION;
20import static android.hardware.hdmi.HdmiControlManager.TIMER_RECORDING_RESULT_EXTRA_FAIL_TO_RECORD_SELECTED_SOURCE;
21import static android.hardware.hdmi.HdmiControlManager.TIMER_RECORDING_TYPE_ANALOGUE;
22import static android.hardware.hdmi.HdmiControlManager.TIMER_RECORDING_TYPE_DIGITAL;
23import static android.hardware.hdmi.HdmiControlManager.TIMER_RECORDING_TYPE_EXTERNAL;
24
25import android.util.Slog;
26
27import com.android.server.hdmi.HdmiControlService.SendMessageCallback;
28
29import java.util.Arrays;
30
31/**
32 * Feature action that performs timer recording.
33 */
34public class TimerRecordingAction extends FeatureAction {
35    private static final String TAG = "TimerRecordingAction";
36
37    // Timer out for waiting <Timer Status> 120s.
38    private static final int TIMER_STATUS_TIMEOUT_MS = 120000;
39
40    // State that waits for <Timer Status> once sending <Set XXX Timer>
41    private static final int STATE_WAITING_FOR_TIMER_STATUS = 1;
42
43    private final int mRecorderAddress;
44    private final int mSourceType;
45    private final byte[] mRecordSource;
46
47    TimerRecordingAction(HdmiCecLocalDevice source, int recorderAddress, int sourceType,
48            byte[] recordSource) {
49        super(source);
50        mRecorderAddress = recorderAddress;
51        mSourceType = sourceType;
52        mRecordSource = recordSource;
53    }
54
55    @Override
56    boolean start() {
57        sendTimerMessage();
58        return true;
59    }
60
61    private void sendTimerMessage() {
62        HdmiCecMessage message = null;
63        switch (mSourceType) {
64            case TIMER_RECORDING_TYPE_DIGITAL:
65                message = HdmiCecMessageBuilder.buildSetDigitalTimer(getSourceAddress(),
66                        mRecorderAddress, mRecordSource);
67                break;
68            case TIMER_RECORDING_TYPE_ANALOGUE:
69                message = HdmiCecMessageBuilder.buildSetAnalogueTimer(getSourceAddress(),
70                        mRecorderAddress, mRecordSource);
71                break;
72            case TIMER_RECORDING_TYPE_EXTERNAL:
73                message = HdmiCecMessageBuilder.buildSetExternalTimer(getSourceAddress(),
74                        mRecorderAddress, mRecordSource);
75                break;
76            default:
77                tv().announceTimerRecordingResult(
78                        TIMER_RECORDING_RESULT_EXTRA_FAIL_TO_RECORD_SELECTED_SOURCE);
79                finish();
80                return;
81        }
82        sendCommand(message, new SendMessageCallback() {
83            @Override
84            public void onSendCompleted(int error) {
85                if (error != Constants.SEND_RESULT_SUCCESS) {
86                    mState = STATE_WAITING_FOR_TIMER_STATUS;
87                    addTimer(mState, TIMER_STATUS_TIMEOUT_MS);
88                    finish();
89                    return;
90                }
91            }
92        });
93    }
94
95    @Override
96    boolean processCommand(HdmiCecMessage cmd) {
97        if (mState != STATE_WAITING_FOR_TIMER_STATUS) {
98            return false;
99        }
100
101        if (cmd.getSource() != mRecorderAddress) {
102            return false;
103        }
104
105        switch (cmd.getOpcode()) {
106            case Constants.MESSAGE_TIMER_STATUS:
107                return handleTimerStatus(cmd);
108            case Constants.MESSAGE_FEATURE_ABORT:
109                return handleFeatureAbort(cmd);
110        }
111        return false;
112    }
113
114    private boolean handleTimerStatus(HdmiCecMessage cmd) {
115        byte[] timerStatusData = cmd.getParams();
116        // [Timer Status Data] should be one or three bytes.
117        if (timerStatusData.length == 1 || timerStatusData.length == 3) {
118            tv().announceTimerRecordingResult(bytesToInt(timerStatusData));
119            Slog.i(TAG, "Received [Timer Status Data]:" + Arrays.toString(timerStatusData));
120        } else {
121            Slog.w(TAG, "Invalid [Timer Status Data]:" + Arrays.toString(timerStatusData));
122        }
123
124        // Unlike one touch record, finish timer record when <Timer Status> is received.
125        finish();
126        return true;
127    }
128
129    private boolean handleFeatureAbort(HdmiCecMessage cmd) {
130        byte[] params = cmd.getParams();
131        int messageType = params[0];
132        switch (messageType) {
133            case Constants.MESSAGE_SET_DIGITAL_TIMER: // fall through
134            case Constants.MESSAGE_SET_ANALOG_TIMER: // fall through
135            case Constants.MESSAGE_SET_EXTERNAL_TIMER: // fall through
136                break;
137            default:
138                return false;
139        }
140        int reason = params[1];
141        Slog.i(TAG, "[Feature Abort] for " + messageType + " reason:" + reason);
142        tv().announceTimerRecordingResult(TIMER_RECORDING_RESULT_EXTRA_CHECK_RECORDER_CONNECTION);
143        finish();
144        return true;
145    }
146
147    // Convert byte array to int.
148    private static int bytesToInt(byte[] data) {
149        if (data.length > 4) {
150            throw new IllegalArgumentException("Invalid data size:" + Arrays.toString(data));
151        }
152        int result = 0;
153        for (int i = 0; i < data.length; ++i) {
154            int shift = (3 - i) * 8;
155            result |= ((data[i] & 0xFF) << shift);
156        }
157        return result;
158    }
159
160    @Override
161    void handleTimerEvent(int state) {
162        if (mState != state) {
163            Slog.w(TAG, "Timeout in invalid state:[Expected:" + mState + ", Actual:" + state + "]");
164            return;
165        }
166
167        tv().announceTimerRecordingResult(TIMER_RECORDING_RESULT_EXTRA_CHECK_RECORDER_CONNECTION);
168        finish();
169    }
170}
171