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.annotation.Nullable; 20import android.hardware.hdmi.HdmiControlManager; 21import android.hardware.hdmi.IHdmiControlCallback; 22import android.os.RemoteException; 23import android.util.Slog; 24 25import com.android.server.hdmi.HdmiControlService.SendMessageCallback; 26 27/** 28 * Action to update audio status (volume or mute) of audio amplifier 29 */ 30final class SystemAudioStatusAction extends HdmiCecFeatureAction { 31 private static final String TAG = "SystemAudioStatusAction"; 32 33 // State that waits for <ReportAudioStatus>. 34 private static final int STATE_WAIT_FOR_REPORT_AUDIO_STATUS = 1; 35 36 private final int mAvrAddress; 37 @Nullable private final IHdmiControlCallback mCallback; 38 39 SystemAudioStatusAction(HdmiCecLocalDevice source, int avrAddress, 40 IHdmiControlCallback callback) { 41 super(source); 42 mAvrAddress = avrAddress; 43 mCallback = callback; 44 } 45 46 @Override 47 boolean start() { 48 mState = STATE_WAIT_FOR_REPORT_AUDIO_STATUS; 49 addTimer(mState, HdmiConfig.TIMEOUT_MS); 50 sendGiveAudioStatus(); 51 return true; 52 } 53 54 private void sendGiveAudioStatus() { 55 sendCommand(HdmiCecMessageBuilder.buildGiveAudioStatus(getSourceAddress(), mAvrAddress), 56 new SendMessageCallback() { 57 @Override 58 public void onSendCompleted(int error) { 59 if (error != Constants.SEND_RESULT_SUCCESS) { 60 handleSendGiveAudioStatusFailure(); 61 } 62 } 63 }); 64 } 65 66 private void handleSendGiveAudioStatusFailure() { 67 // Inform to all application that the audio status (volumn, mute) of 68 // the audio amplifier is unknown. 69 tv().setAudioStatus(false, Constants.UNKNOWN_VOLUME); 70 71 sendUserControlPressedAndReleased(mAvrAddress, 72 HdmiCecKeycode.getMuteKey(!tv().isSystemAudioActivated())); 73 74 // Still return SUCCESS to callback. 75 finishWithCallback(HdmiControlManager.RESULT_SUCCESS); 76 } 77 78 @Override 79 boolean processCommand(HdmiCecMessage cmd) { 80 if (mState != STATE_WAIT_FOR_REPORT_AUDIO_STATUS || mAvrAddress != cmd.getSource()) { 81 return false; 82 } 83 84 switch (cmd.getOpcode()) { 85 case Constants.MESSAGE_REPORT_AUDIO_STATUS: 86 handleReportAudioStatus(cmd); 87 return true; 88 } 89 90 return false; 91 } 92 93 private void handleReportAudioStatus(HdmiCecMessage cmd) { 94 byte[] params = cmd.getParams(); 95 boolean mute = (params[0] & 0x80) == 0x80; 96 int volume = params[0] & 0x7F; 97 tv().setAudioStatus(mute, volume); 98 99 if (!(tv().isSystemAudioActivated() ^ mute)) { 100 // Toggle AVR's mute status to match with the system audio status. 101 sendUserControlPressedAndReleased(mAvrAddress, HdmiCecKeycode.CEC_KEYCODE_MUTE); 102 } 103 finishWithCallback(HdmiControlManager.RESULT_SUCCESS); 104 } 105 106 private void finishWithCallback(int returnCode) { 107 if (mCallback != null) { 108 try { 109 mCallback.onComplete(returnCode); 110 } catch (RemoteException e) { 111 Slog.e(TAG, "Failed to invoke callback.", e); 112 } 113 } 114 finish(); 115 } 116 117 @Override 118 void handleTimerEvent(int state) { 119 if (mState != state) { 120 return; 121 } 122 123 handleSendGiveAudioStatusFailure(); 124 } 125} 126