btif/src/btif_util.c

   1 /******************************************************************************
   2  *
   3  *  Copyright (c) 2014 The Android Open Source Project
   4  *  Copyright (C) 2009-2012 Broadcom Corporation
   5  *
   6  *  Licensed under the Apache License, Version 2.0 (the "License");
   7  *  you may not use this file except in compliance with the License.
   8  *  You may obtain a copy of the License at:
   9  *
  10  *  http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  *  Unless required by applicable law or agreed to in writing, software
  13  *  distributed under the License is distributed on an "AS IS" BASIS,
  14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *  See the License for the specific language governing permissions and
  16  *  limitations under the License.
  17  *
  18  ******************************************************************************/
  19
  20 /************************************************************************************
  21  *
  22  *  Filename:      btif_util.c
  23  *
  24  *  Description:   Miscellaneous helper functions
  25  *
  26  *
  27  ***********************************************************************************/
  28
  29 #define LOG_TAG "bt_btif_util"
  30
  31 #include "btif_util.h"
  32
  33 #include <ctype.h>
  34 #include <netinet/in.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38
  39 #include <hardware/bt_av.h>
  40
  41 #include "avrc_defs.h"
  42 #include "bta_ag_api.h"
  43 #include "bta_api.h"
  44 #include "bta_av_api.h"
  45 #include "bta_hf_client_api.h"
  46 #include "bta_hh_api.h"
  47 #include "bte.h"
  48 #include "btif_common.h"
  49 #include "btif_dm.h"
  50 #include "btu.h"
  51 #include "gki.h"
  52
  53 /************************************************************************************
  54 **  Constants & Macros
  55 ************************************************************************************/
  56 #define ISDIGIT(a)  ((a>='0') && (a<='9'))
  57 #define ISXDIGIT(a) (((a>='0') && (a<='9'))||((a>='A') && (a<='F'))||((a>='a') && (a<='f')))
  58
  59 /************************************************************************************
  60 **  Local type definitions
  61 ************************************************************************************/
  62
  63 /************************************************************************************
  64 **  Static variables
  65 ************************************************************************************/
  66
  67 /************************************************************************************
  68 **  Static functions
  69 ************************************************************************************/
  70
  71 /************************************************************************************
  72 **  Externs
  73 ************************************************************************************/
  74
  75 /************************************************************************************
  76 **  Functions
  77 ************************************************************************************/
  78
  79 /*****************************************************************************
  80 **   Logging helper functions
  81 *****************************************************************************/
  82
  83 UINT32 devclass2uint(DEV_CLASS dev_class)
  84 {
  85     UINT32 cod = 0;
  86
  87     if(dev_class != NULL)
  88     {
  89         /* if COD is 0, irrespective of the device type set it to Unclassified device */
  90         cod = (dev_class[2]) | (dev_class[1] << 8) | (dev_class[0] << 16);
  91     }
  92     return cod;
  93 }
  94 void uint2devclass(UINT32 cod, DEV_CLASS dev_class)
  95 {
  96     dev_class[2] = (UINT8)cod;
  97     dev_class[1] = (UINT8)(cod >> 8);
  98     dev_class[0] = (UINT8)(cod >> 16);
  99 }
 100
 101 static const UINT8  sdp_base_uuid[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
 102                                        0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB};
 103
 104 void uuid16_to_uuid128(uint16_t uuid16, bt_uuid_t* uuid128)
 105 {
 106     uint16_t uuid16_bo;
 107     memset(uuid128, 0, sizeof(bt_uuid_t));
 108
 109     memcpy(uuid128->uu, sdp_base_uuid, MAX_UUID_SIZE);
 110     uuid16_bo = ntohs(uuid16);
 111     memcpy(uuid128->uu + 2, &uuid16_bo, sizeof(uint16_t));
 112 }
 113
 114 void string_to_uuid(char *str, bt_uuid_t *p_uuid)
 115 {
 116     uint32_t uuid0, uuid4;
 117     uint16_t uuid1, uuid2, uuid3, uuid5;
 118
 119     sscanf(str, "%08x-%04hx-%04hx-%04hx-%08x%04hx",
 120                 &uuid0, &uuid1, &uuid2, &uuid3, &uuid4, &uuid5);
 121
 122     uuid0 = htonl(uuid0);
 123     uuid1 = htons(uuid1);
 124     uuid2 = htons(uuid2);
 125     uuid3 = htons(uuid3);
 126     uuid4 = htonl(uuid4);
 127     uuid5 = htons(uuid5);
 128
 129     memcpy(&(p_uuid->uu[0]), &uuid0, 4);
 130     memcpy(&(p_uuid->uu[4]), &uuid1, 2);
 131     memcpy(&(p_uuid->uu[6]), &uuid2, 2);
 132     memcpy(&(p_uuid->uu[8]), &uuid3, 2);
 133     memcpy(&(p_uuid->uu[10]), &uuid4, 4);
 134     memcpy(&(p_uuid->uu[14]), &uuid5, 2);
 135
 136     return;
 137
 138 }
 139
 140 void uuid_to_string_legacy(bt_uuid_t *p_uuid, char *str)
 141 {
 142     uint32_t uuid0, uuid4;
 143     uint16_t uuid1, uuid2, uuid3, uuid5;
 144
 145     memcpy(&uuid0, &(p_uuid->uu[0]), 4);
 146     memcpy(&uuid1, &(p_uuid->uu[4]), 2);
 147     memcpy(&uuid2, &(p_uuid->uu[6]), 2);
 148     memcpy(&uuid3, &(p_uuid->uu[8]), 2);
 149     memcpy(&uuid4, &(p_uuid->uu[10]), 4);
 150     memcpy(&uuid5, &(p_uuid->uu[14]), 2);
 151
 152     sprintf((char *)str, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x",
 153             ntohl(uuid0), ntohs(uuid1),
 154             ntohs(uuid2), ntohs(uuid3),
 155             ntohl(uuid4), ntohs(uuid5));
 156     return;
 157 }
 158
 159 /*****************************************************************************
 160 **  Function        ascii_2_hex
 161 **
 162 **  Description     This function converts an ASCII string into HEX
 163 **
 164 **  Returns         the number of hex bytes filled.
 165 */
 166 int ascii_2_hex (char *p_ascii, int len, UINT8 *p_hex)
 167 {
 168     int     x;
 169     UINT8   c;
 170
 171     for (x = 0; (x < len) && (*p_ascii); x++)
 172     {
 173         if (ISDIGIT (*p_ascii))
 174             c = (*p_ascii - '0') << 4;
 175         else
 176             c = (toupper(*p_ascii) - 'A' + 10) << 4;
 177
 178         p_ascii++;
 179         if (*p_ascii)
 180         {
 181             if (ISDIGIT (*p_ascii))
 182                 c |= (*p_ascii - '0');
 183             else
 184                 c |= (toupper(*p_ascii) - 'A' + 10);
 185
 186             p_ascii++;
 187         }
 188         *p_hex++ = c;
 189     }
 190
 191     return (x);
 192 }
 193
 194 const char* dump_dm_search_event(UINT16 event)
 195 {
 196     switch(event)
 197     {
 198         CASE_RETURN_STR(BTA_DM_INQ_RES_EVT)
 199         CASE_RETURN_STR(BTA_DM_INQ_CMPL_EVT)
 200         CASE_RETURN_STR(BTA_DM_DISC_RES_EVT)
 201         CASE_RETURN_STR(BTA_DM_DISC_BLE_RES_EVT)
 202         CASE_RETURN_STR(BTA_DM_DISC_CMPL_EVT)
 203         CASE_RETURN_STR(BTA_DM_DI_DISC_CMPL_EVT)
 204         CASE_RETURN_STR(BTA_DM_SEARCH_CANCEL_CMPL_EVT)
 205
 206         default:
 207             return "UNKNOWN MSG ID";
 208      }
 209 }
 210
 211 const char* dump_property_type(bt_property_type_t type)
 212 {
 213     switch(type)
 214     {
 215         CASE_RETURN_STR(BT_PROPERTY_BDNAME)
 216         CASE_RETURN_STR(BT_PROPERTY_BDADDR)
 217         CASE_RETURN_STR(BT_PROPERTY_UUIDS)
 218         CASE_RETURN_STR(BT_PROPERTY_CLASS_OF_DEVICE)
 219         CASE_RETURN_STR(BT_PROPERTY_TYPE_OF_DEVICE)
 220         CASE_RETURN_STR(BT_PROPERTY_REMOTE_RSSI)
 221         CASE_RETURN_STR(BT_PROPERTY_ADAPTER_DISCOVERY_TIMEOUT)
 222         CASE_RETURN_STR(BT_PROPERTY_ADAPTER_BONDED_DEVICES)
 223         CASE_RETURN_STR(BT_PROPERTY_ADAPTER_SCAN_MODE)
 224         CASE_RETURN_STR(BT_PROPERTY_REMOTE_FRIENDLY_NAME)
 225
 226         default:
 227             return "UNKNOWN PROPERTY ID";
 228     }
 229 }
 230
 231 const char* dump_dm_event(UINT16 event)
 232 {
 233     switch(event)
 234     {
 235         CASE_RETURN_STR(BTA_DM_ENABLE_EVT)
 236         CASE_RETURN_STR(BTA_DM_DISABLE_EVT)
 237         CASE_RETURN_STR(BTA_DM_PIN_REQ_EVT)
 238         CASE_RETURN_STR(BTA_DM_AUTH_CMPL_EVT)
 239         CASE_RETURN_STR(BTA_DM_AUTHORIZE_EVT)
 240         CASE_RETURN_STR(BTA_DM_LINK_UP_EVT)
 241         CASE_RETURN_STR(BTA_DM_LINK_DOWN_EVT)
 242         CASE_RETURN_STR(BTA_DM_SIG_STRENGTH_EVT)
 243         CASE_RETURN_STR(BTA_DM_BUSY_LEVEL_EVT)
 244         CASE_RETURN_STR(BTA_DM_BOND_CANCEL_CMPL_EVT)
 245         CASE_RETURN_STR(BTA_DM_SP_CFM_REQ_EVT)
 246         CASE_RETURN_STR(BTA_DM_SP_KEY_NOTIF_EVT)
 247         CASE_RETURN_STR(BTA_DM_SP_RMT_OOB_EVT)
 248         CASE_RETURN_STR(BTA_DM_SP_KEYPRESS_EVT)
 249         CASE_RETURN_STR(BTA_DM_ROLE_CHG_EVT)
 250         CASE_RETURN_STR(BTA_DM_BLE_KEY_EVT)
 251         CASE_RETURN_STR(BTA_DM_BLE_SEC_REQ_EVT)
 252         CASE_RETURN_STR(BTA_DM_BLE_PASSKEY_NOTIF_EVT)
 253         CASE_RETURN_STR(BTA_DM_BLE_PASSKEY_REQ_EVT)
 254         CASE_RETURN_STR(BTA_DM_BLE_OOB_REQ_EVT)
 255         CASE_RETURN_STR(BTA_DM_BLE_LOCAL_IR_EVT)
 256         CASE_RETURN_STR(BTA_DM_BLE_LOCAL_ER_EVT)
 257         CASE_RETURN_STR(BTA_DM_BLE_AUTH_CMPL_EVT)
 258         CASE_RETURN_STR(BTA_DM_DEV_UNPAIRED_EVT)
 259         CASE_RETURN_STR(BTA_DM_HW_ERROR_EVT)
 260         CASE_RETURN_STR(BTA_DM_ENER_INFO_READ)
 261
 262         default:
 263             return "UNKNOWN DM EVENT";
 264     }
 265 }
 266
 267 const char* dump_hf_event(UINT16 event)
 268 {
 269     switch(event)
 270     {
 271         CASE_RETURN_STR(BTA_AG_ENABLE_EVT)
 272         CASE_RETURN_STR(BTA_AG_REGISTER_EVT)
 273         CASE_RETURN_STR(BTA_AG_OPEN_EVT)
 274         CASE_RETURN_STR(BTA_AG_CLOSE_EVT)
 275         CASE_RETURN_STR(BTA_AG_CONN_EVT)
 276         CASE_RETURN_STR(BTA_AG_AUDIO_OPEN_EVT)
 277         CASE_RETURN_STR(BTA_AG_AUDIO_CLOSE_EVT)
 278         CASE_RETURN_STR(BTA_AG_SPK_EVT)
 279         CASE_RETURN_STR(BTA_AG_MIC_EVT)
 280         CASE_RETURN_STR(BTA_AG_AT_CKPD_EVT)
 281         CASE_RETURN_STR(BTA_AG_DISABLE_EVT)
 282 #if (BTM_WBS_INCLUDED == TRUE )
 283         CASE_RETURN_STR(BTA_AG_WBS_EVT)
 284 #endif
 285         CASE_RETURN_STR(BTA_AG_AT_A_EVT)
 286         CASE_RETURN_STR(BTA_AG_AT_D_EVT)
 287         CASE_RETURN_STR(BTA_AG_AT_CHLD_EVT)
 288         CASE_RETURN_STR(BTA_AG_AT_CHUP_EVT)
 289         CASE_RETURN_STR(BTA_AG_AT_CIND_EVT)
 290         CASE_RETURN_STR(BTA_AG_AT_VTS_EVT)
 291         CASE_RETURN_STR(BTA_AG_AT_BINP_EVT)
 292         CASE_RETURN_STR(BTA_AG_AT_BLDN_EVT)
 293         CASE_RETURN_STR(BTA_AG_AT_BVRA_EVT)
 294         CASE_RETURN_STR(BTA_AG_AT_NREC_EVT)
 295         CASE_RETURN_STR(BTA_AG_AT_CNUM_EVT)
 296         CASE_RETURN_STR(BTA_AG_AT_BTRH_EVT)
 297         CASE_RETURN_STR(BTA_AG_AT_CLCC_EVT)
 298         CASE_RETURN_STR(BTA_AG_AT_COPS_EVT)
 299         CASE_RETURN_STR(BTA_AG_AT_UNAT_EVT)
 300         CASE_RETURN_STR(BTA_AG_AT_CBC_EVT)
 301         CASE_RETURN_STR(BTA_AG_AT_BAC_EVT)
 302         CASE_RETURN_STR(BTA_AG_AT_BCS_EVT)
 303
 304         default:
 305             return "UNKNOWN MSG ID";
 306      }
 307 }
 308
 309 const char* dump_hf_client_event(UINT16 event)
 310 {
 311     switch(event)
 312     {
 313         CASE_RETURN_STR(BTA_HF_CLIENT_ENABLE_EVT)
 314         CASE_RETURN_STR(BTA_HF_CLIENT_REGISTER_EVT)
 315         CASE_RETURN_STR(BTA_HF_CLIENT_OPEN_EVT)
 316         CASE_RETURN_STR(BTA_HF_CLIENT_CLOSE_EVT)
 317         CASE_RETURN_STR(BTA_HF_CLIENT_CONN_EVT)
 318         CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_OPEN_EVT)
 319         CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_MSBC_OPEN_EVT)
 320         CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_CLOSE_EVT)
 321         CASE_RETURN_STR(BTA_HF_CLIENT_SPK_EVT)
 322         CASE_RETURN_STR(BTA_HF_CLIENT_MIC_EVT)
 323         CASE_RETURN_STR(BTA_HF_CLIENT_DISABLE_EVT)
 324         CASE_RETURN_STR(BTA_HF_CLIENT_IND_EVT)
 325         CASE_RETURN_STR(BTA_HF_CLIENT_VOICE_REC_EVT)
 326         CASE_RETURN_STR(BTA_HF_CLIENT_OPERATOR_NAME_EVT)
 327         CASE_RETURN_STR(BTA_HF_CLIENT_CLIP_EVT)
 328         CASE_RETURN_STR(BTA_HF_CLIENT_CCWA_EVT)
 329         CASE_RETURN_STR(BTA_HF_CLIENT_AT_RESULT_EVT)
 330         CASE_RETURN_STR(BTA_HF_CLIENT_CLCC_EVT)
 331         CASE_RETURN_STR(BTA_HF_CLIENT_CNUM_EVT)
 332         CASE_RETURN_STR(BTA_HF_CLIENT_BTRH_EVT)
 333         CASE_RETURN_STR(BTA_HF_CLIENT_BSIR_EVT)
 334         CASE_RETURN_STR(BTA_HF_CLIENT_BINP_EVT)
 335         CASE_RETURN_STR(BTA_HF_CLIENT_RING_INDICATION)
 336         default:
 337             return "UNKNOWN MSG ID";
 338      }
 339 }
 340
 341 const char* dump_hh_event(UINT16 event)
 342 {
 343     switch(event)
 344     {
 345         CASE_RETURN_STR(BTA_HH_ENABLE_EVT)
 346         CASE_RETURN_STR(BTA_HH_DISABLE_EVT)
 347         CASE_RETURN_STR(BTA_HH_OPEN_EVT)
 348         CASE_RETURN_STR(BTA_HH_CLOSE_EVT)
 349         CASE_RETURN_STR(BTA_HH_GET_DSCP_EVT)
 350         CASE_RETURN_STR(BTA_HH_GET_PROTO_EVT)
 351         CASE_RETURN_STR(BTA_HH_GET_RPT_EVT)
 352         CASE_RETURN_STR(BTA_HH_GET_IDLE_EVT)
 353         CASE_RETURN_STR(BTA_HH_SET_PROTO_EVT)
 354         CASE_RETURN_STR(BTA_HH_SET_RPT_EVT)
 355         CASE_RETURN_STR(BTA_HH_SET_IDLE_EVT)
 356         CASE_RETURN_STR(BTA_HH_VC_UNPLUG_EVT)
 357         CASE_RETURN_STR(BTA_HH_ADD_DEV_EVT)
 358         CASE_RETURN_STR(BTA_HH_RMV_DEV_EVT)
 359         CASE_RETURN_STR(BTA_HH_API_ERR_EVT)
 360         default:
 361             return "UNKNOWN MSG ID";
 362      }
 363 }
 364
 365 const char* dump_hf_conn_state(UINT16 event)
 366 {
 367     switch(event)
 368     {
 369         CASE_RETURN_STR(BTHF_CONNECTION_STATE_DISCONNECTED)
 370         CASE_RETURN_STR(BTHF_CONNECTION_STATE_CONNECTING)
 371         CASE_RETURN_STR(BTHF_CONNECTION_STATE_CONNECTED)
 372         CASE_RETURN_STR(BTHF_CONNECTION_STATE_SLC_CONNECTED)
 373         CASE_RETURN_STR(BTHF_CONNECTION_STATE_DISCONNECTING)
 374         default:
 375             return "UNKNOWN MSG ID";
 376     }
 377 }
 378
 379 const char* dump_hf_call_state(bthf_call_state_t call_state)
 380 {
 381     switch(call_state)
 382     {
 383         CASE_RETURN_STR(BTHF_CALL_STATE_IDLE)
 384         CASE_RETURN_STR(BTHF_CALL_STATE_HELD)
 385         CASE_RETURN_STR(BTHF_CALL_STATE_DIALING)
 386         CASE_RETURN_STR(BTHF_CALL_STATE_ALERTING)
 387         CASE_RETURN_STR(BTHF_CALL_STATE_INCOMING)
 388         CASE_RETURN_STR(BTHF_CALL_STATE_WAITING)
 389         CASE_RETURN_STR(BTHF_CALL_STATE_ACTIVE)
 390         default:
 391             return "UNKNOWN CALL STATE";
 392     }
 393 }
 394
 395 const char* dump_thread_evt(bt_cb_thread_evt evt)
 396 {
 397     switch(evt)
 398     {
 399         CASE_RETURN_STR(ASSOCIATE_JVM)
 400         CASE_RETURN_STR(DISASSOCIATE_JVM)
 401
 402         default:
 403             return "unknown thread evt";
 404     }
 405 }
 406
 407 const char* dump_hf_audio_state(UINT16 event)
 408 {
 409     switch(event)
 410     {
 411         CASE_RETURN_STR(BTHF_AUDIO_STATE_DISCONNECTED)
 412         CASE_RETURN_STR(BTHF_AUDIO_STATE_CONNECTING)
 413         CASE_RETURN_STR(BTHF_AUDIO_STATE_CONNECTED)
 414         CASE_RETURN_STR(BTHF_AUDIO_STATE_DISCONNECTING)
 415         default:
 416            return "UNKNOWN MSG ID";
 417
 418     }
 419 }
 420
 421 const char* dump_av_conn_state(UINT16 event)
 422 {
 423     switch(event)
 424     {
 425         CASE_RETURN_STR(BTAV_CONNECTION_STATE_DISCONNECTED)
 426         CASE_RETURN_STR(BTAV_CONNECTION_STATE_CONNECTING)
 427         CASE_RETURN_STR(BTAV_CONNECTION_STATE_CONNECTED)
 428         CASE_RETURN_STR(BTAV_CONNECTION_STATE_DISCONNECTING)
 429         default:
 430             return "UNKNOWN MSG ID";
 431     }
 432 }
 433
 434 const char* dump_av_audio_state(UINT16 event)
 435 {
 436     switch(event)
 437     {
 438         CASE_RETURN_STR(BTAV_AUDIO_STATE_REMOTE_SUSPEND)
 439         CASE_RETURN_STR(BTAV_AUDIO_STATE_STOPPED)
 440         CASE_RETURN_STR(BTAV_AUDIO_STATE_STARTED)
 441         default:
 442             return "UNKNOWN MSG ID";
 443     }
 444 }
 445
 446 const char* dump_adapter_scan_mode(bt_scan_mode_t mode)
 447 {
 448     switch(mode)
 449     {
 450         CASE_RETURN_STR(BT_SCAN_MODE_NONE)
 451         CASE_RETURN_STR(BT_SCAN_MODE_CONNECTABLE)
 452         CASE_RETURN_STR(BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE)
 453
 454         default:
 455             return "unknown scan mode";
 456     }
 457 }
 458
 459 const char* dump_bt_status(bt_status_t status)
 460 {
 461     switch(status)
 462     {
 463         CASE_RETURN_STR(BT_STATUS_SUCCESS)
 464         CASE_RETURN_STR(BT_STATUS_FAIL)
 465         CASE_RETURN_STR(BT_STATUS_NOT_READY)
 466         CASE_RETURN_STR(BT_STATUS_NOMEM)
 467         CASE_RETURN_STR(BT_STATUS_BUSY)
 468         CASE_RETURN_STR(BT_STATUS_UNSUPPORTED)
 469
 470         default:
 471             return "unknown scan mode";
 472     }
 473 }
 474
 475 const char *dump_rc_event(UINT8 event)
 476 {
 477    switch(event) {
 478         CASE_RETURN_STR(BTA_AV_RC_OPEN_EVT)
 479         CASE_RETURN_STR(BTA_AV_RC_CLOSE_EVT)
 480         CASE_RETURN_STR(BTA_AV_REMOTE_CMD_EVT)
 481         CASE_RETURN_STR(BTA_AV_REMOTE_RSP_EVT)
 482         CASE_RETURN_STR(BTA_AV_VENDOR_CMD_EVT)
 483         CASE_RETURN_STR(BTA_AV_VENDOR_RSP_EVT)
 484         CASE_RETURN_STR(BTA_AV_META_MSG_EVT)
 485         CASE_RETURN_STR(BTA_AV_RC_FEAT_EVT)
 486         default:
 487             return "UNKNOWN_EVENT";
 488    }
 489 }
 490
 491 const char * dump_rc_notification_event_id(UINT8 event_id)
 492 {
 493     switch(event_id)
 494     {
 495         CASE_RETURN_STR(AVRC_EVT_PLAY_STATUS_CHANGE)
 496         CASE_RETURN_STR(AVRC_EVT_TRACK_CHANGE)
 497         CASE_RETURN_STR(AVRC_EVT_TRACK_REACHED_END)
 498         CASE_RETURN_STR(AVRC_EVT_TRACK_REACHED_START)
 499         CASE_RETURN_STR(AVRC_EVT_PLAY_POS_CHANGED)
 500         CASE_RETURN_STR(AVRC_EVT_BATTERY_STATUS_CHANGE)
 501         CASE_RETURN_STR(AVRC_EVT_SYSTEM_STATUS_CHANGE)
 502         CASE_RETURN_STR(AVRC_EVT_APP_SETTING_CHANGE)
 503         CASE_RETURN_STR(AVRC_EVT_VOLUME_CHANGE)
 504
 505         default:
 506             return "Unhandled Event ID";
 507     }
 508 }
 509
 510 const char*  dump_rc_pdu(UINT8 pdu)
 511 {
 512     switch(pdu)
 513     {
 514         CASE_RETURN_STR(AVRC_PDU_LIST_PLAYER_APP_ATTR)
 515         CASE_RETURN_STR(AVRC_PDU_LIST_PLAYER_APP_VALUES)
 516         CASE_RETURN_STR(AVRC_PDU_GET_CUR_PLAYER_APP_VALUE)
 517         CASE_RETURN_STR(AVRC_PDU_SET_PLAYER_APP_VALUE)
 518         CASE_RETURN_STR(AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT)
 519         CASE_RETURN_STR(AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT)
 520         CASE_RETURN_STR(AVRC_PDU_INFORM_DISPLAY_CHARSET)
 521         CASE_RETURN_STR(AVRC_PDU_INFORM_BATTERY_STAT_OF_CT)
 522         CASE_RETURN_STR(AVRC_PDU_GET_ELEMENT_ATTR)
 523         CASE_RETURN_STR(AVRC_PDU_GET_PLAY_STATUS)
 524         CASE_RETURN_STR(AVRC_PDU_REGISTER_NOTIFICATION)
 525         CASE_RETURN_STR(AVRC_PDU_REQUEST_CONTINUATION_RSP)
 526         CASE_RETURN_STR(AVRC_PDU_ABORT_CONTINUATION_RSP)
 527         CASE_RETURN_STR(AVRC_PDU_SET_ABSOLUTE_VOLUME)
 528         default:
 529             return "Unknown PDU";
 530     }
 531 }