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 17 package com.android.server.hdmi; 18 19 import libcore.util.EmptyArray; 20 21 import java.util.Arrays; 22 23 /** 24 * A class to encapsulate HDMI-CEC message used for the devices connected via 25 * HDMI cable to communicate with one another. A message is defined by its 26 * source and destination address, command (or opcode), and optional parameters. 27 */ 28 public final class HdmiCecMessage { 29 public static final byte[] EMPTY_PARAM = EmptyArray.BYTE; 30 31 private final int mSource; 32 private final int mDestination; 33 34 private final int mOpcode; 35 private final byte[] mParams; 36 37 /** 38 * Constructor. 39 */ 40 public HdmiCecMessage(int source, int destination, int opcode, byte[] params) { 41 mSource = source; 42 mDestination = destination; 43 mOpcode = opcode & 0xFF; 44 mParams = Arrays.copyOf(params, params.length); 45 } 46 47 /** 48 * Return the source address field of the message. It is the logical address 49 * of the device which generated the message. 50 * 51 * @return source address 52 */ 53 public int getSource() { 54 return mSource; 55 } 56 57 /** 58 * Return the destination address field of the message. It is the logical address 59 * of the device to which the message is sent. 60 * 61 * @return destination address 62 */ 63 public int getDestination() { 64 return mDestination; 65 } 66 67 /** 68 * Return the opcode field of the message. It is the type of the message that 69 * tells the destination device what to do. 70 * 71 * @return opcode 72 */ 73 public int getOpcode() { 74 return mOpcode; 75 } 76 77 /** 78 * Return the parameter field of the message. The contents of parameter varies 79 * from opcode to opcode, and is used together with opcode to describe 80 * the action for the destination device to take. 81 * 82 * @return parameter 83 */ 84 public byte[] getParams() { 85 return mParams; 86 } 87 88 @Override 89 public String toString() { 90 StringBuffer s = new StringBuffer(); 91 s.append(String.format("<%s> src: %d, dst: %d", 92 opcodeToString(mOpcode), mSource, mDestination)); 93 if (mParams.length > 0) { 94 s.append(", params:"); 95 for (byte data : mParams) { 96 s.append(String.format(" %02X", data)); 97 } 98 } 99 return s.toString(); 100 } 101 102 private static String opcodeToString(int opcode) { 103 switch (opcode) { 104 case Constants.MESSAGE_FEATURE_ABORT: 105 return "Feature Abort"; 106 case Constants.MESSAGE_IMAGE_VIEW_ON: 107 return "Image View On"; 108 case Constants.MESSAGE_TUNER_STEP_INCREMENT: 109 return "Tuner Step Increment"; 110 case Constants.MESSAGE_TUNER_STEP_DECREMENT: 111 return "Tuner Step Decrement"; 112 case Constants.MESSAGE_TUNER_DEVICE_STATUS: 113 return "Tuner Device Staus"; 114 case Constants.MESSAGE_GIVE_TUNER_DEVICE_STATUS: 115 return "Give Tuner Device Status"; 116 case Constants.MESSAGE_RECORD_ON: 117 return "Record On"; 118 case Constants.MESSAGE_RECORD_STATUS: 119 return "Record Status"; 120 case Constants.MESSAGE_RECORD_OFF: 121 return "Record Off"; 122 case Constants.MESSAGE_TEXT_VIEW_ON: 123 return "Text View On"; 124 case Constants.MESSAGE_RECORD_TV_SCREEN: 125 return "Record Tv Screen"; 126 case Constants.MESSAGE_GIVE_DECK_STATUS: 127 return "Give Deck Status"; 128 case Constants.MESSAGE_DECK_STATUS: 129 return "Deck Status"; 130 case Constants.MESSAGE_SET_MENU_LANGUAGE: 131 return "Set Menu Language"; 132 case Constants.MESSAGE_CLEAR_ANALOG_TIMER: 133 return "Clear Analog Timer"; 134 case Constants.MESSAGE_SET_ANALOG_TIMER: 135 return "Set Analog Timer"; 136 case Constants.MESSAGE_TIMER_STATUS: 137 return "Timer Status"; 138 case Constants.MESSAGE_STANDBY: 139 return "Standby"; 140 case Constants.MESSAGE_PLAY: 141 return "Play"; 142 case Constants.MESSAGE_DECK_CONTROL: 143 return "Deck Control"; 144 case Constants.MESSAGE_TIMER_CLEARED_STATUS: 145 return "Timer Cleared Status"; 146 case Constants.MESSAGE_USER_CONTROL_PRESSED: 147 return "User Control Pressed"; 148 case Constants.MESSAGE_USER_CONTROL_RELEASED: 149 return "User Control Release"; 150 case Constants.MESSAGE_GIVE_OSD_NAME: 151 return "Give Osd Name"; 152 case Constants.MESSAGE_SET_OSD_NAME: 153 return "Set Osd Name"; 154 case Constants.MESSAGE_SET_OSD_STRING: 155 return "Set Osd String"; 156 case Constants.MESSAGE_SET_TIMER_PROGRAM_TITLE: 157 return "Set Timer Program Title"; 158 case Constants.MESSAGE_SYSTEM_AUDIO_MODE_REQUEST: 159 return "System Audio Mode Request"; 160 case Constants.MESSAGE_GIVE_AUDIO_STATUS: 161 return "Give Audio Status"; 162 case Constants.MESSAGE_SET_SYSTEM_AUDIO_MODE: 163 return "Set System Audio Mode"; 164 case Constants.MESSAGE_REPORT_AUDIO_STATUS: 165 return "Report Audio Status"; 166 case Constants.MESSAGE_GIVE_SYSTEM_AUDIO_MODE_STATUS: 167 return "Give System Audio Mode Status"; 168 case Constants.MESSAGE_SYSTEM_AUDIO_MODE_STATUS: 169 return "System Audio Mode Status"; 170 case Constants.MESSAGE_ROUTING_CHANGE: 171 return "Routing Change"; 172 case Constants.MESSAGE_ROUTING_INFORMATION: 173 return "Routing Information"; 174 case Constants.MESSAGE_ACTIVE_SOURCE: 175 return "Active Source"; 176 case Constants.MESSAGE_GIVE_PHYSICAL_ADDRESS: 177 return "Give Physical Address"; 178 case Constants.MESSAGE_REPORT_PHYSICAL_ADDRESS: 179 return "Report Physical Address"; 180 case Constants.MESSAGE_REQUEST_ACTIVE_SOURCE: 181 return "Request Active Source"; 182 case Constants.MESSAGE_SET_STREAM_PATH: 183 return "Set Stream Path"; 184 case Constants.MESSAGE_DEVICE_VENDOR_ID: 185 return "Device Vendor Id"; 186 case Constants.MESSAGE_VENDOR_COMMAND: 187 return "Vendor Commandn"; 188 case Constants.MESSAGE_VENDOR_REMOTE_BUTTON_DOWN: 189 return "Vendor Remote Button Down"; 190 case Constants.MESSAGE_VENDOR_REMOTE_BUTTON_UP: 191 return "Vendor Remote Button Up"; 192 case Constants.MESSAGE_GIVE_DEVICE_VENDOR_ID: 193 return "Give Device Vendor Id"; 194 case Constants.MESSAGE_MENU_REQUEST: 195 return "Menu REquest"; 196 case Constants.MESSAGE_MENU_STATUS: 197 return "Menu Status"; 198 case Constants.MESSAGE_GIVE_DEVICE_POWER_STATUS: 199 return "Give Device Power Status"; 200 case Constants.MESSAGE_REPORT_POWER_STATUS: 201 return "Report Power Status"; 202 case Constants.MESSAGE_GET_MENU_LANGUAGE: 203 return "Get Menu Language"; 204 case Constants.MESSAGE_SELECT_ANALOG_SERVICE: 205 return "Select Analog Service"; 206 case Constants.MESSAGE_SELECT_DIGITAL_SERVICE: 207 return "Select Digital Service"; 208 case Constants.MESSAGE_SET_DIGITAL_TIMER: 209 return "Set Digital Timer"; 210 case Constants.MESSAGE_CLEAR_DIGITAL_TIMER: 211 return "Clear Digital Timer"; 212 case Constants.MESSAGE_SET_AUDIO_RATE: 213 return "Set Audio Rate"; 214 case Constants.MESSAGE_INACTIVE_SOURCE: 215 return "InActive Source"; 216 case Constants.MESSAGE_CEC_VERSION: 217 return "Cec Version"; 218 case Constants.MESSAGE_GET_CEC_VERSION: 219 return "Get Cec Version"; 220 case Constants.MESSAGE_VENDOR_COMMAND_WITH_ID: 221 return "Vendor Command With Id"; 222 case Constants.MESSAGE_CLEAR_EXTERNAL_TIMER: 223 return "Clear External Timer"; 224 case Constants.MESSAGE_SET_EXTERNAL_TIMER: 225 return "Set External Timer"; 226 case Constants.MESSAGE_REPORT_SHORT_AUDIO_DESCRIPTOR: 227 return "Repot Short Audio Descriptor"; 228 case Constants.MESSAGE_REQUEST_SHORT_AUDIO_DESCRIPTOR: 229 return "Request Short Audio Descriptor"; 230 case Constants.MESSAGE_INITIATE_ARC: 231 return "Initiate ARC"; 232 case Constants.MESSAGE_REPORT_ARC_INITIATED: 233 return "Report ARC Initiated"; 234 case Constants.MESSAGE_REPORT_ARC_TERMINATED: 235 return "Report ARC Terminated"; 236 case Constants.MESSAGE_REQUEST_ARC_INITIATION: 237 return "Request ARC Initiation"; 238 case Constants.MESSAGE_REQUEST_ARC_TERMINATION: 239 return "Request ARC Termination"; 240 case Constants.MESSAGE_TERMINATE_ARC: 241 return "Terminate ARC"; 242 case Constants.MESSAGE_CDC_MESSAGE: 243 return "Cdc Message"; 244 case Constants.MESSAGE_ABORT: 245 return "Abort"; 246 default: 247 return String.format("Opcode: %02X", opcode); 248 } 249 } 250 } 251 252
