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      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 android.view.KeyEvent;
     20 
     21 /**
     22  * Helper class to translate android keycode to hdmi cec keycode and vice versa.
     23  */
     24 final class HdmiCecKeycode {
     25     public static final int UNSUPPORTED_KEYCODE = -1;
     26     public static final int NO_PARAM = -1;
     27 
     28     // =========================================================================
     29     // Hdmi CEC keycodes
     30     public static final int CEC_KEYCODE_SELECT = 0x00;
     31     public static final int CEC_KEYCODE_UP = 0x01;
     32     public static final int CEC_KEYCODE_DOWN = 0x02;
     33     public static final int CEC_KEYCODE_LEFT = 0x03;
     34     public static final int CEC_KEYCODE_RIGHT = 0x04;
     35     public static final int CEC_KEYCODE_RIGHT_UP = 0x05;
     36     public static final int CEC_KEYCODE_RIGHT_DOWN = 0x06;
     37     public static final int CEC_KEYCODE_LEFT_UP = 0x07;
     38     public static final int CEC_KEYCODE_LEFT_DOWN = 0x08;
     39     public static final int CEC_KEYCODE_ROOT_MENU = 0x09;
     40     public static final int CEC_KEYCODE_SETUP_MENU = 0x0A;
     41     public static final int CEC_KEYCODE_CONTENTS_MENU = 0x0B;
     42     public static final int CEC_KEYCODE_FAVORITE_MENU = 0x0C;
     43     public static final int CEC_KEYCODE_EXIT = 0x0D;
     44     // RESERVED = 0x0E - 0x0F
     45     public static final int CEC_KEYCODE_MEDIA_TOP_MENU = 0x10;
     46     public static final int CEC_KEYCODE_MEDIA_CONTEXT_SENSITIVE_MENU = 0x11;
     47     // RESERVED = 0x12  0x1C
     48     public static final int CEC_KEYCODE_NUMBER_ENTRY_MODE = 0x1D;
     49     public static final int CEC_KEYCODE_NUMBER_11 = 0x1E;
     50     public static final int CEC_KEYCODE_NUMBER_12 = 0x1F;
     51     public static final int CEC_KEYCODE_NUMBER_0_OR_NUMBER_10 = 0x20;
     52     public static final int CEC_KEYCODE_NUMBERS_1 = 0x21;
     53     public static final int CEC_KEYCODE_NUMBERS_2 = 0x22;
     54     public static final int CEC_KEYCODE_NUMBERS_3 = 0x23;
     55     public static final int CEC_KEYCODE_NUMBERS_4 = 0x24;
     56     public static final int CEC_KEYCODE_NUMBERS_5 = 0x25;
     57     public static final int CEC_KEYCODE_NUMBERS_6 = 0x26;
     58     public static final int CEC_KEYCODE_NUMBERS_7 = 0x27;
     59     public static final int CEC_KEYCODE_NUMBERS_8 = 0x28;
     60     public static final int CEC_KEYCODE_NUMBERS_9 = 0x29;
     61     public static final int CEC_KEYCODE_DOT = 0x2A;
     62     public static final int CEC_KEYCODE_ENTER = 0x2B;
     63     public static final int CEC_KEYCODE_CLEAR = 0x2C;
     64     // RESERVED = 0x2D - 0x2E
     65     public static final int CEC_KEYCODE_NEXT_FAVORITE = 0x2F;
     66     public static final int CEC_KEYCODE_CHANNEL_UP = 0x30;
     67     public static final int CEC_KEYCODE_CHANNEL_DOWN = 0x31;
     68     public static final int CEC_KEYCODE_PREVIOUS_CHANNEL = 0x32;
     69     public static final int CEC_KEYCODE_SOUND_SELECT = 0x33;
     70     public static final int CEC_KEYCODE_INPUT_SELECT = 0x34;
     71     public static final int CEC_KEYCODE_DISPLAY_INFORMATION = 0x35;
     72     public static final int CEC_KEYCODE_HELP = 0x36;
     73     public static final int CEC_KEYCODE_PAGE_UP = 0x37;
     74     public static final int CEC_KEYCODE_PAGE_DOWN = 0x38;
     75     // RESERVED = 0x39 - 0x3F
     76     public static final int CEC_KEYCODE_POWER = 0x40;
     77     public static final int CEC_KEYCODE_VOLUME_UP = 0x41;
     78     public static final int CEC_KEYCODE_VOLUME_DOWN = 0x42;
     79     public static final int CEC_KEYCODE_MUTE = 0x43;
     80     public static final int CEC_KEYCODE_PLAY = 0x44;
     81     public static final int CEC_KEYCODE_STOP = 0x45;
     82     public static final int CEC_KEYCODE_PAUSE = 0x46;
     83     public static final int CEC_KEYCODE_RECORD = 0x47;
     84     public static final int CEC_KEYCODE_REWIND = 0x48;
     85     public static final int CEC_KEYCODE_FAST_FORWARD = 0x49;
     86     public static final int CEC_KEYCODE_EJECT = 0x4A;
     87     public static final int CEC_KEYCODE_FORWARD = 0x4B;
     88     public static final int CEC_KEYCODE_BACKWARD = 0x4C;
     89     public static final int CEC_KEYCODE_STOP_RECORD = 0x4D;
     90     public static final int CEC_KEYCODE_PAUSE_RECORD = 0x4E;
     91     public static final int CEC_KEYCODE_RESERVED = 0x4F;
     92     public static final int CEC_KEYCODE_ANGLE = 0x50;
     93     public static final int CEC_KEYCODE_SUB_PICTURE = 0x51;
     94     public static final int CEC_KEYCODE_VIDEO_ON_DEMAND = 0x52;
     95     public static final int CEC_KEYCODE_ELECTRONIC_PROGRAM_GUIDE = 0x53;
     96     public static final int CEC_KEYCODE_TIMER_PROGRAMMING = 0x54;
     97     public static final int CEC_KEYCODE_INITIAL_CONFIGURATION = 0x55;
     98     public static final int CEC_KEYCODE_SELECT_BROADCAST_TYPE = 0x56;
     99     public static final int CEC_KEYCODE_SELECT_SOUND_PRESENTATION = 0x57;
    100     // RESERVED = 0x58-0x5F
    101     public static final int CEC_KEYCODE_PLAY_FUNCTION = 0x60;
    102     public static final int CEC_KEYCODE_PAUSE_PLAY_FUNCTION = 0x61;
    103     public static final int CEC_KEYCODE_RECORD_FUNCTION = 0x62;
    104     public static final int CEC_KEYCODE_PAUSE_RECORD_FUNCTION = 0x63;
    105     public static final int CEC_KEYCODE_STOP_FUNCTION = 0x64;
    106     public static final int CEC_KEYCODE_MUTE_FUNCTION = 0x65;
    107     public static final int CEC_KEYCODE_RESTORE_VOLUME_FUNCTION = 0x66;
    108     public static final int CEC_KEYCODE_TUNE_FUNCTION = 0x67;
    109     public static final int CEC_KEYCODE_SELECT_MEDIA_FUNCTION = 0x68;
    110     public static final int CEC_KEYCODE_SELECT_AV_INPUT_FUNCTION = 0x69;
    111     public static final int CEC_KEYCODE_SELECT_AUDIO_INPUT_FUNCTION = 0x6A;
    112     public static final int CEC_KEYCODE_POWER_TOGGLE_FUNCTION = 0x6B;
    113     public static final int CEC_KEYCODE_POWER_OFF_FUNCTION = 0x6C;
    114     public static final int CEC_KEYCODE_POWER_ON_FUNCTION = 0x6D;
    115     // RESERVED = 0x6E-0x70
    116     public static final int CEC_KEYCODE_F1_BLUE = 0x71;
    117     public static final int CEC_KEYCODE_F2_RED = 0x72;
    118     public static final int CEC_KEYCODE_F3_GREEN = 0x73;
    119     public static final int CEC_KEYCODE_F4_YELLOW = 0x74;
    120     public static final int CEC_KEYCODE_F5 = 0x75;
    121     public static final int CEC_KEYCODE_DATA = 0x76;
    122     // RESERVED = 0x77-0xFF
    123 
    124     // =========================================================================
    125     // UI Broadcast Type
    126     public static final int UI_BROADCAST_TOGGLE_ALL = 0x00;
    127     public static final int UI_BROADCAST_TOGGLE_ANALOGUE_DIGITAL = 0x01;
    128     public static final int UI_BROADCAST_ANALOGUE = 0x10;
    129     public static final int UI_BROADCAST_ANALOGUE_TERRESTRIAL = 0x20;
    130     public static final int UI_BROADCAST_ANALOGUE_CABLE = 0x30;
    131     public static final int UI_BROADCAST_ANALOGUE_SATELLITE = 0x40;
    132     public static final int UI_BROADCAST_DIGITAL = 0x50;
    133     public static final int UI_BROADCAST_DIGITAL_TERRESTRIAL = 0x60;
    134     public static final int UI_BROADCAST_DIGITAL_CABLE = 0x70;
    135     public static final int UI_BROADCAST_DIGITAL_SATELLITE = 0x80;
    136     public static final int UI_BROADCAST_DIGITAL_COMMNICATIONS_SATELLITE = 0x90;
    137     public static final int UI_BROADCAST_DIGITAL_COMMNICATIONS_SATELLITE_2 = 0x91;
    138     public static final int UI_BROADCAST_IP = 0xA0;
    139 
    140     // =========================================================================
    141     // UI Sound Presentation Control
    142     public static final int UI_SOUND_PRESENTATION_SOUND_MIX_DUAL_MONO = 0x20;
    143     public static final int UI_SOUND_PRESENTATION_SOUND_MIX_KARAOKE = 0x30;
    144     public static final int UI_SOUND_PRESENTATION_SELECT_AUDIO_DOWN_MIX = 0x80;
    145     public static final int UI_SOUND_PRESENTATION_SELECT_AUDIO_AUTO_REVERBERATION = 0x90;
    146     public static final int UI_SOUND_PRESENTATION_SELECT_AUDIO_AUTO_EQUALIZER = 0xA0;
    147     public static final int UI_SOUND_PRESENTATION_BASS_STEP_PLUS = 0xB1;
    148     public static final int UI_SOUND_PRESENTATION_BASS_NEUTRAL = 0xB2;
    149     public static final int UI_SOUND_PRESENTATION_BASS_STEP_MINUS = 0xB3;
    150     public static final int UI_SOUND_PRESENTATION_TREBLE_STEP_PLUS = 0xC1;
    151     public static final int UI_SOUND_PRESENTATION_TREBLE_NEUTRAL = 0xC2;
    152     public static final int UI_SOUND_PRESENTATION_TREBLE_STEP_MINUS = 0xC3;
    153 
    154     private HdmiCecKeycode() {
    155     }
    156 
    157     /**
    158      * A mapping between Android and CEC keycode.
    159      *
    160      * <p>Normal implementation of this looks like
    161      * <pre>
    162      *    new KeycodeEntry(KeyEvent.KEYCODE_DPAD_CENTER, CEC_KEYCODE_SELECT);
    163      * </pre>
    164      * <p>However, some keys in CEC requires additional parameter.
    165      * In order to use parameterized cec key, add unique android keycode (existing or custom)
    166      * corresponding to a pair of cec keycode and and its param.
    167      * <pre>
    168      *    new KeycodeEntry(CUSTOME_ANDORID_KEY_1, CEC_KEYCODE_SELECT_BROADCAST_TYPE,
    169      *        UI_BROADCAST_TOGGLE_ALL);
    170      *    new KeycodeEntry(CUSTOME_ANDORID_KEY_2, CEC_KEYCODE_SELECT_BROADCAST_TYPE,
    171      *        UI_BROADCAST_ANALOGUE);
    172      * </pre>
    173      */
    174     private static class KeycodeEntry {
    175         private final int mAndroidKeycode;
    176         private final int mCecKeycode;
    177         private final boolean mIsRepeatable;
    178 
    179         private KeycodeEntry(int androidKeycode, int cecKeycode, boolean isRepeatable) {
    180             mAndroidKeycode = androidKeycode;
    181             mCecKeycode = cecKeycode;
    182             mIsRepeatable = isRepeatable;
    183         }
    184 
    185         private KeycodeEntry(int androidKeycode, int cecKeycode) {
    186             this(androidKeycode, cecKeycode, true);
    187         }
    188 
    189         private int toCecKeycodeIfMatched(int androidKeycode) {
    190             if (mAndroidKeycode == androidKeycode) {
    191                 return mCecKeycode;
    192             } else {
    193                 return UNSUPPORTED_KEYCODE;
    194             }
    195         }
    196 
    197         private int toAndroidKeycodeIfMatched(int cecKeycode) {
    198             if (cecKeycode == mCecKeycode) {
    199                 return mAndroidKeycode;
    200             } else {
    201                 return UNSUPPORTED_KEYCODE;
    202             }
    203         }
    204 
    205         private Boolean isRepeatableIfMatched(int androidKeycode) {
    206             if (mAndroidKeycode == androidKeycode) {
    207                 return mIsRepeatable;
    208             } else {
    209                 return null;
    210             }
    211         }
    212     }
    213 
    214     // Keycode entry container for all mappings.
    215     // Note that order of entry is the same as above cec keycode definition.
    216     private static final KeycodeEntry[] KEYCODE_ENTRIES = new KeycodeEntry[] {
    217             new KeycodeEntry(KeyEvent.KEYCODE_DPAD_CENTER, CEC_KEYCODE_SELECT),
    218             new KeycodeEntry(KeyEvent.KEYCODE_DPAD_UP, CEC_KEYCODE_UP),
    219             new KeycodeEntry(KeyEvent.KEYCODE_DPAD_DOWN, CEC_KEYCODE_DOWN),
    220             new KeycodeEntry(KeyEvent.KEYCODE_DPAD_LEFT, CEC_KEYCODE_LEFT),
    221             new KeycodeEntry(KeyEvent.KEYCODE_DPAD_RIGHT, CEC_KEYCODE_RIGHT),
    222             // No Android keycode defined for CEC_KEYCODE_RIGHT_UP
    223             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_RIGHT_UP),
    224             // No Android keycode defined for CEC_KEYCODE_RIGHT_DOWN
    225             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_RIGHT_DOWN),
    226             // No Android keycode defined for CEC_KEYCODE_LEFT_UP
    227             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_LEFT_UP),
    228             // No Android keycode defined for CEC_KEYCODE_LEFT_DOWN
    229             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_LEFT_DOWN),
    230             new KeycodeEntry(KeyEvent.KEYCODE_HOME, CEC_KEYCODE_ROOT_MENU, false),
    231             new KeycodeEntry(KeyEvent.KEYCODE_SETTINGS, CEC_KEYCODE_SETUP_MENU, false),
    232             new KeycodeEntry(KeyEvent.KEYCODE_MENU, CEC_KEYCODE_CONTENTS_MENU, false),
    233             // No Android keycode defined for CEC_KEYCODE_FAVORITE_MENU
    234             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_FAVORITE_MENU),
    235             new KeycodeEntry(KeyEvent.KEYCODE_BACK, CEC_KEYCODE_EXIT),
    236             // RESERVED
    237             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_TOP_MENU, CEC_KEYCODE_MEDIA_TOP_MENU),
    238             // No Android keycode defined for CEC_KEYCODE_MEDIA_CONTEXT_SENSITIVE_MENU
    239             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_MEDIA_CONTEXT_SENSITIVE_MENU),
    240             // RESERVED
    241             // No Android keycode defined for CEC_KEYCODE_NUMBER_ENTRY_MODE
    242             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_NUMBER_ENTRY_MODE),
    243             new KeycodeEntry(KeyEvent.KEYCODE_11, CEC_KEYCODE_NUMBER_11),
    244             new KeycodeEntry(KeyEvent.KEYCODE_12, CEC_KEYCODE_NUMBER_12),
    245             new KeycodeEntry(KeyEvent.KEYCODE_0, CEC_KEYCODE_NUMBER_0_OR_NUMBER_10),
    246             new KeycodeEntry(KeyEvent.KEYCODE_1, CEC_KEYCODE_NUMBERS_1),
    247             new KeycodeEntry(KeyEvent.KEYCODE_2, CEC_KEYCODE_NUMBERS_2),
    248             new KeycodeEntry(KeyEvent.KEYCODE_3, CEC_KEYCODE_NUMBERS_3),
    249             new KeycodeEntry(KeyEvent.KEYCODE_4, CEC_KEYCODE_NUMBERS_4),
    250             new KeycodeEntry(KeyEvent.KEYCODE_5, CEC_KEYCODE_NUMBERS_5),
    251             new KeycodeEntry(KeyEvent.KEYCODE_6, CEC_KEYCODE_NUMBERS_6),
    252             new KeycodeEntry(KeyEvent.KEYCODE_7, CEC_KEYCODE_NUMBERS_7),
    253             new KeycodeEntry(KeyEvent.KEYCODE_8, CEC_KEYCODE_NUMBERS_8),
    254             new KeycodeEntry(KeyEvent.KEYCODE_9, CEC_KEYCODE_NUMBERS_9),
    255             new KeycodeEntry(KeyEvent.KEYCODE_PERIOD, CEC_KEYCODE_DOT),
    256             new KeycodeEntry(KeyEvent.KEYCODE_NUMPAD_ENTER, CEC_KEYCODE_ENTER),
    257             new KeycodeEntry(KeyEvent.KEYCODE_CLEAR, CEC_KEYCODE_CLEAR),
    258             // RESERVED
    259             // No Android keycode defined for CEC_KEYCODE_NEXT_FAVORITE
    260             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_NEXT_FAVORITE),
    261             new KeycodeEntry(KeyEvent.KEYCODE_CHANNEL_UP, CEC_KEYCODE_CHANNEL_UP),
    262             new KeycodeEntry(KeyEvent.KEYCODE_CHANNEL_DOWN, CEC_KEYCODE_CHANNEL_DOWN),
    263             new KeycodeEntry(KeyEvent.KEYCODE_LAST_CHANNEL, CEC_KEYCODE_PREVIOUS_CHANNEL),
    264             // No Android keycode defined for CEC_KEYCODE_SOUND_SELECT
    265             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_SOUND_SELECT),
    266             new KeycodeEntry(KeyEvent.KEYCODE_TV_INPUT, CEC_KEYCODE_INPUT_SELECT),
    267             new KeycodeEntry(KeyEvent.KEYCODE_INFO, CEC_KEYCODE_DISPLAY_INFORMATION),
    268             // No Android keycode defined for CEC_KEYCODE_HELP
    269             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_HELP),
    270             new KeycodeEntry(KeyEvent.KEYCODE_PAGE_UP, CEC_KEYCODE_PAGE_UP),
    271             new KeycodeEntry(KeyEvent.KEYCODE_PAGE_DOWN, CEC_KEYCODE_PAGE_DOWN),
    272             // RESERVED
    273             new KeycodeEntry(KeyEvent.KEYCODE_POWER, CEC_KEYCODE_POWER, false),
    274             new KeycodeEntry(KeyEvent.KEYCODE_VOLUME_UP, CEC_KEYCODE_VOLUME_UP),
    275             new KeycodeEntry(KeyEvent.KEYCODE_VOLUME_DOWN, CEC_KEYCODE_VOLUME_DOWN),
    276             new KeycodeEntry(KeyEvent.KEYCODE_VOLUME_MUTE, CEC_KEYCODE_MUTE, false),
    277             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_PLAY, CEC_KEYCODE_PLAY),
    278             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_STOP, CEC_KEYCODE_STOP),
    279             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_PAUSE, CEC_KEYCODE_PAUSE),
    280             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_RECORD, CEC_KEYCODE_RECORD),
    281             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_REWIND, CEC_KEYCODE_REWIND),
    282             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_FAST_FORWARD, CEC_KEYCODE_FAST_FORWARD),
    283             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_EJECT, CEC_KEYCODE_EJECT),
    284             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_NEXT, CEC_KEYCODE_FORWARD),
    285             new KeycodeEntry(KeyEvent.KEYCODE_MEDIA_PREVIOUS, CEC_KEYCODE_BACKWARD),
    286             // No Android keycode defined for CEC_KEYCODE_STOP_RECORD
    287             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_STOP_RECORD),
    288             // No Android keycode defined for CEC_KEYCODE_PAUSE_RECORD
    289             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_PAUSE_RECORD),
    290             // No Android keycode defined for CEC_KEYCODE_RESERVED
    291             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_RESERVED),
    292             // No Android keycode defined for CEC_KEYCODE_ANGLE
    293             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_ANGLE),
    294             // No Android keycode defined for CEC_KEYCODE_SUB_PICTURE
    295             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_SUB_PICTURE),
    296             // No Android keycode defined for CEC_KEYCODE_VIDEO_ON_DEMAND
    297             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_VIDEO_ON_DEMAND),
    298             new KeycodeEntry(KeyEvent.KEYCODE_GUIDE, CEC_KEYCODE_ELECTRONIC_PROGRAM_GUIDE),
    299             // No Android keycode defined for CEC_KEYCODE_TIMER_PROGRAMMING
    300             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_TIMER_PROGRAMMING),
    301             // No Android keycode defined for CEC_KEYCODE_INITIAL_CONFIGURATION
    302             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_INITIAL_CONFIGURATION),
    303             // No Android keycode defined for CEC_KEYCODE_SELECT_BROADCAST_TYPE
    304             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_SELECT_BROADCAST_TYPE),
    305             // No Android keycode defined for CEC_KEYCODE_SELECT_SOUND_PRESENTATION
    306             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_SELECT_SOUND_PRESENTATION),
    307             // RESERVED
    308             // The following deterministic key definitions do not need key mapping
    309             // since they are supposed to be generated programmatically only.
    310             // No Android keycode defined for CEC_KEYCODE_PLAY_FUNCTION
    311             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_PLAY_FUNCTION),
    312             // No Android keycode defined for CEC_KEYCODE_PAUSE_PLAY_FUNCTION
    313             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_PAUSE_PLAY_FUNCTION),
    314             // No Android keycode defined for CEC_KEYCODE_RECORD_FUNCTION
    315             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_RECORD_FUNCTION),
    316             // No Android keycode defined for CEC_KEYCODE_PAUSE_RECORD_FUNCTION
    317             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_PAUSE_RECORD_FUNCTION),
    318             // No Android keycode defined for CEC_KEYCODE_STOP_FUNCTION
    319             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_STOP_FUNCTION),
    320             // No Android keycode defined for CEC_KEYCODE_MUTE_FUNCTION
    321             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_MUTE_FUNCTION, false),
    322             // No Android keycode defined for CEC_KEYCODE_RESTORE_VOLUME_FUNCTION
    323             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_RESTORE_VOLUME_FUNCTION, false),
    324             // No Android keycode defined for CEC_KEYCODE_TUNE_FUNCTION
    325             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_TUNE_FUNCTION),
    326             // No Android keycode defined for CEC_KEYCODE_SELECT_MEDIA_FUNCTION
    327             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_SELECT_MEDIA_FUNCTION),
    328             // No Android keycode defined for CEC_KEYCODE_SELECT_AV_INPUT_FUNCTION
    329             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_SELECT_AV_INPUT_FUNCTION),
    330             // No Android keycode defined for CEC_KEYCODE_SELECT_AUDIO_INPUT_FUNCTION
    331             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_SELECT_AUDIO_INPUT_FUNCTION),
    332             // No Android keycode defined for CEC_KEYCODE_POWER_TOGGLE_FUNCTION
    333             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_POWER_TOGGLE_FUNCTION),
    334             // No Android keycode defined for CEC_KEYCODE_POWER_OFF_FUNCTION
    335             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_POWER_OFF_FUNCTION),
    336             // No Android keycode defined for CEC_KEYCODE_POWER_ON_FUNCTION
    337             new KeycodeEntry(UNSUPPORTED_KEYCODE, CEC_KEYCODE_POWER_ON_FUNCTION, false),
    338             // RESERVED
    339             new KeycodeEntry(KeyEvent.KEYCODE_PROG_BLUE, CEC_KEYCODE_F1_BLUE),
    340             new KeycodeEntry(KeyEvent.KEYCODE_PROG_RED, CEC_KEYCODE_F2_RED),
    341             new KeycodeEntry(KeyEvent.KEYCODE_PROG_GREEN, CEC_KEYCODE_F3_GREEN),
    342             new KeycodeEntry(KeyEvent.KEYCODE_PROG_YELLOW, CEC_KEYCODE_F4_YELLOW),
    343             new KeycodeEntry(KeyEvent.KEYCODE_F5, CEC_KEYCODE_F5),
    344             new KeycodeEntry(KeyEvent.KEYCODE_TV_DATA_SERVICE, CEC_KEYCODE_DATA),
    345             // RESERVED
    346             // Add a new key mapping here if new keycode is introduced.
    347     };
    348 
    349     /**
    350      * Translate Android keycode to Hdmi Cec keycode.
    351      *
    352      * @param keycode Android keycode. For details, refer {@link KeyEvent}
    353      * @return single byte CEC keycode if matched.
    354      */
    355     static int androidKeyToCecKey(int keycode) {
    356         for (int i = 0; i < KEYCODE_ENTRIES.length; ++i) {
    357             int cecKeycode = KEYCODE_ENTRIES[i].toCecKeycodeIfMatched(keycode);
    358             if (cecKeycode != UNSUPPORTED_KEYCODE) {
    359                 return cecKeycode;
    360             }
    361         }
    362         return UNSUPPORTED_KEYCODE;
    363     }
    364 
    365     /**
    366      * Translate Hdmi CEC keycode to Android keycode.
    367      *
    368      * @param keycode CEC keycode
    369      * @return cec keycode corresponding to the given android keycode.
    370      *         If finds no matched keycode, return {@link #UNSUPPORTED_KEYCODE}
    371      */
    372     static int cecKeyToAndroidKey(int keycode) {
    373         for (int i = 0; i < KEYCODE_ENTRIES.length; ++i) {
    374             int androidKey = KEYCODE_ENTRIES[i].toAndroidKeycodeIfMatched(keycode);
    375             if (androidKey != UNSUPPORTED_KEYCODE) {
    376                 return androidKey;
    377             }
    378         }
    379         return UNSUPPORTED_KEYCODE;
    380     }
    381 
    382     /**
    383      * Whether the given {@code androidKeycode} is repeatable key or not.
    384      *
    385      * @param androidKeycode keycode of android
    386      * @return false if the given {@code androidKeycode} is not supported key code
    387      */
    388     static boolean isRepeatableKey(int androidKeycode) {
    389         for (int i = 0; i < KEYCODE_ENTRIES.length; ++i) {
    390             Boolean isRepeatable = KEYCODE_ENTRIES[i].isRepeatableIfMatched(androidKeycode);
    391             if (isRepeatable != null) {
    392                 return isRepeatable;
    393             }
    394         }
    395         return false;
    396     }
    397 
    398     /**
    399      * Returns {@code true} if given Android keycode is supported, otherwise {@code false}.
    400      */
    401     static boolean isSupportedKeycode(int androidKeycode) {
    402         return HdmiCecKeycode.androidKeyToCecKey(androidKeycode)
    403                 != HdmiCecKeycode.UNSUPPORTED_KEYCODE;
    404   }
    405 }
    406