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 #include <hardware/bluetooth.h> 30 #include <hardware/bt_hf.h> 31 #include <hardware/bt_av.h> 32 #include <netinet/in.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <ctype.h> 37 38 39 #define LOG_TAG "BTIF_UTIL" 40 #include "btif_common.h" 41 #include "bta_api.h" 42 #include "gki.h" 43 #include "btu.h" 44 #include "bte.h" 45 #include "bd.h" 46 #include "btif_dm.h" 47 #include "btif_util.h" 48 #include "bta_ag_api.h" 49 #include "bta_av_api.h" 50 #include "bta_hh_api.h" 51 #include "bta_hf_client_api.h" 52 #include "avrc_defs.h" 53 54 /************************************************************************************ 55 ** Constants & Macros 56 ************************************************************************************/ 57 #define ISDIGIT(a) ((a>='0') && (a<='9')) 58 #define ISXDIGIT(a) (((a>='0') && (a<='9'))||((a>='A') && (a<='F'))||((a>='a') && (a<='f'))) 59 60 /************************************************************************************ 61 ** Local type definitions 62 ************************************************************************************/ 63 64 /************************************************************************************ 65 ** Static variables 66 ************************************************************************************/ 67 68 /************************************************************************************ 69 ** Static functions 70 ************************************************************************************/ 71 72 /************************************************************************************ 73 ** Externs 74 ************************************************************************************/ 75 76 /************************************************************************************ 77 ** Functions 78 ************************************************************************************/ 79 80 /***************************************************************************** 81 ** Logging helper functions 82 *****************************************************************************/ 83 84 int str2bd(char *str, bt_bdaddr_t *addr) 85 { 86 int32_t i = 0; 87 for (i = 0; i < 6; i++) { 88 addr->address[i] = (uint8_t)strtoul(str, &str, 16); 89 str++; 90 } 91 return 0; 92 } 93 94 char *bd2str(const bt_bdaddr_t *bdaddr, bdstr_t *bdstr) 95 { 96 const uint8_t *addr = bdaddr->address; 97 98 sprintf(*bdstr, "%02x:%02x:%02x:%02x:%02x:%02x", 99 addr[0], addr[1], addr[2], 100 addr[3], addr[4], addr[5]); 101 return *bdstr; 102 } 103 104 UINT32 devclass2uint(DEV_CLASS dev_class) 105 { 106 UINT32 cod = 0; 107 108 if(dev_class != NULL) 109 { 110 /* if COD is 0, irrespective of the device type set it to Unclassified device */ 111 cod = (dev_class[2]) | (dev_class[1] << 8) | (dev_class[0] << 16); 112 } 113 return cod; 114 } 115 void uint2devclass(UINT32 cod, DEV_CLASS dev_class) 116 { 117 dev_class[2] = (UINT8)cod; 118 dev_class[1] = (UINT8)(cod >> 8); 119 dev_class[0] = (UINT8)(cod >> 16); 120 } 121 122 static const UINT8 sdp_base_uuid[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 123 0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB}; 124 125 void uuid16_to_uuid128(uint16_t uuid16, bt_uuid_t* uuid128) 126 { 127 uint16_t uuid16_bo; 128 memset(uuid128, 0, sizeof(bt_uuid_t)); 129 130 memcpy(uuid128->uu, sdp_base_uuid, MAX_UUID_SIZE); 131 uuid16_bo = ntohs(uuid16); 132 memcpy(uuid128->uu + 2, &uuid16_bo, sizeof(uint16_t)); 133 } 134 135 void string_to_uuid(char *str, bt_uuid_t *p_uuid) 136 { 137 uint32_t uuid0, uuid4; 138 uint16_t uuid1, uuid2, uuid3, uuid5; 139 140 sscanf(str, "%08x-%04hx-%04hx-%04hx-%08x%04hx", 141 &uuid0, &uuid1, &uuid2, &uuid3, &uuid4, &uuid5); 142 143 uuid0 = htonl(uuid0); 144 uuid1 = htons(uuid1); 145 uuid2 = htons(uuid2); 146 uuid3 = htons(uuid3); 147 uuid4 = htonl(uuid4); 148 uuid5 = htons(uuid5); 149 150 memcpy(&(p_uuid->uu[0]), &uuid0, 4); 151 memcpy(&(p_uuid->uu[4]), &uuid1, 2); 152 memcpy(&(p_uuid->uu[6]), &uuid2, 2); 153 memcpy(&(p_uuid->uu[8]), &uuid3, 2); 154 memcpy(&(p_uuid->uu[10]), &uuid4, 4); 155 memcpy(&(p_uuid->uu[14]), &uuid5, 2); 156 157 return; 158 159 } 160 161 void uuid_to_string(bt_uuid_t *p_uuid, char *str) 162 { 163 uint32_t uuid0, uuid4; 164 uint16_t uuid1, uuid2, uuid3, uuid5; 165 166 memcpy(&uuid0, &(p_uuid->uu[0]), 4); 167 memcpy(&uuid1, &(p_uuid->uu[4]), 2); 168 memcpy(&uuid2, &(p_uuid->uu[6]), 2); 169 memcpy(&uuid3, &(p_uuid->uu[8]), 2); 170 memcpy(&uuid4, &(p_uuid->uu[10]), 4); 171 memcpy(&uuid5, &(p_uuid->uu[14]), 2); 172 173 sprintf((char *)str, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x", 174 ntohl(uuid0), ntohs(uuid1), 175 ntohs(uuid2), ntohs(uuid3), 176 ntohl(uuid4), ntohs(uuid5)); 177 return; 178 } 179 180 /***************************************************************************** 181 ** Function ascii_2_hex 182 ** 183 ** Description This function converts an ASCII string into HEX 184 ** 185 ** Returns the number of hex bytes filled. 186 */ 187 int ascii_2_hex (char *p_ascii, int len, UINT8 *p_hex) 188 { 189 int x; 190 UINT8 c; 191 192 for (x = 0; (x < len) && (*p_ascii); x++) 193 { 194 if (ISDIGIT (*p_ascii)) 195 c = (*p_ascii - '0') << 4; 196 else 197 c = (toupper(*p_ascii) - 'A' + 10) << 4; 198 199 p_ascii++; 200 if (*p_ascii) 201 { 202 if (ISDIGIT (*p_ascii)) 203 c |= (*p_ascii - '0'); 204 else 205 c |= (toupper(*p_ascii) - 'A' + 10); 206 207 p_ascii++; 208 } 209 *p_hex++ = c; 210 } 211 212 return (x); 213 } 214 215 216 const char* dump_dm_search_event(UINT16 event) 217 { 218 switch(event) 219 { 220 CASE_RETURN_STR(BTA_DM_INQ_RES_EVT) 221 CASE_RETURN_STR(BTA_DM_INQ_CMPL_EVT) 222 CASE_RETURN_STR(BTA_DM_DISC_RES_EVT) 223 CASE_RETURN_STR(BTA_DM_DISC_BLE_RES_EVT) 224 CASE_RETURN_STR(BTA_DM_DISC_CMPL_EVT) 225 CASE_RETURN_STR(BTA_DM_DI_DISC_CMPL_EVT) 226 CASE_RETURN_STR(BTA_DM_SEARCH_CANCEL_CMPL_EVT) 227 228 default: 229 return "UNKNOWN MSG ID"; 230 } 231 } 232 233 234 const char* dump_property_type(bt_property_type_t type) 235 { 236 switch(type) 237 { 238 CASE_RETURN_STR(BT_PROPERTY_BDNAME) 239 CASE_RETURN_STR(BT_PROPERTY_BDADDR) 240 CASE_RETURN_STR(BT_PROPERTY_UUIDS) 241 CASE_RETURN_STR(BT_PROPERTY_CLASS_OF_DEVICE) 242 CASE_RETURN_STR(BT_PROPERTY_TYPE_OF_DEVICE) 243 CASE_RETURN_STR(BT_PROPERTY_REMOTE_RSSI) 244 CASE_RETURN_STR(BT_PROPERTY_ADAPTER_DISCOVERY_TIMEOUT) 245 CASE_RETURN_STR(BT_PROPERTY_ADAPTER_BONDED_DEVICES) 246 CASE_RETURN_STR(BT_PROPERTY_ADAPTER_SCAN_MODE) 247 CASE_RETURN_STR(BT_PROPERTY_REMOTE_FRIENDLY_NAME) 248 249 default: 250 return "UNKNOWN PROPERTY ID"; 251 } 252 } 253 254 const char* dump_dm_event(UINT16 event) 255 { 256 switch(event) 257 { 258 CASE_RETURN_STR(BTA_DM_ENABLE_EVT) 259 CASE_RETURN_STR(BTA_DM_DISABLE_EVT) 260 CASE_RETURN_STR(BTA_DM_PIN_REQ_EVT) 261 CASE_RETURN_STR(BTA_DM_AUTH_CMPL_EVT) 262 CASE_RETURN_STR(BTA_DM_AUTHORIZE_EVT) 263 CASE_RETURN_STR(BTA_DM_LINK_UP_EVT) 264 CASE_RETURN_STR(BTA_DM_LINK_DOWN_EVT) 265 CASE_RETURN_STR(BTA_DM_SIG_STRENGTH_EVT) 266 CASE_RETURN_STR(BTA_DM_BUSY_LEVEL_EVT) 267 CASE_RETURN_STR(BTA_DM_BOND_CANCEL_CMPL_EVT) 268 CASE_RETURN_STR(BTA_DM_SP_CFM_REQ_EVT) 269 CASE_RETURN_STR(BTA_DM_SP_KEY_NOTIF_EVT) 270 CASE_RETURN_STR(BTA_DM_SP_RMT_OOB_EVT) 271 CASE_RETURN_STR(BTA_DM_SP_KEYPRESS_EVT) 272 CASE_RETURN_STR(BTA_DM_ROLE_CHG_EVT) 273 CASE_RETURN_STR(BTA_DM_BLE_KEY_EVT) 274 CASE_RETURN_STR(BTA_DM_BLE_SEC_REQ_EVT) 275 CASE_RETURN_STR(BTA_DM_BLE_PASSKEY_NOTIF_EVT) 276 CASE_RETURN_STR(BTA_DM_BLE_PASSKEY_REQ_EVT) 277 CASE_RETURN_STR(BTA_DM_BLE_OOB_REQ_EVT) 278 CASE_RETURN_STR(BTA_DM_BLE_LOCAL_IR_EVT) 279 CASE_RETURN_STR(BTA_DM_BLE_LOCAL_ER_EVT) 280 CASE_RETURN_STR(BTA_DM_BLE_AUTH_CMPL_EVT) 281 CASE_RETURN_STR(BTA_DM_DEV_UNPAIRED_EVT) 282 CASE_RETURN_STR(BTA_DM_HW_ERROR_EVT) 283 CASE_RETURN_STR(BTA_DM_ENER_INFO_READ) 284 285 default: 286 return "UNKNOWN DM EVENT"; 287 } 288 } 289 290 const char* dump_hf_event(UINT16 event) 291 { 292 switch(event) 293 { 294 CASE_RETURN_STR(BTA_AG_ENABLE_EVT) 295 CASE_RETURN_STR(BTA_AG_REGISTER_EVT) 296 CASE_RETURN_STR(BTA_AG_OPEN_EVT) 297 CASE_RETURN_STR(BTA_AG_CLOSE_EVT) 298 CASE_RETURN_STR(BTA_AG_CONN_EVT) 299 CASE_RETURN_STR(BTA_AG_AUDIO_OPEN_EVT) 300 CASE_RETURN_STR(BTA_AG_AUDIO_CLOSE_EVT) 301 CASE_RETURN_STR(BTA_AG_SPK_EVT) 302 CASE_RETURN_STR(BTA_AG_MIC_EVT) 303 CASE_RETURN_STR(BTA_AG_AT_CKPD_EVT) 304 CASE_RETURN_STR(BTA_AG_DISABLE_EVT) 305 #if (BTM_WBS_INCLUDED == TRUE ) 306 CASE_RETURN_STR(BTA_AG_WBS_EVT) 307 #endif 308 CASE_RETURN_STR(BTA_AG_AT_A_EVT) 309 CASE_RETURN_STR(BTA_AG_AT_D_EVT) 310 CASE_RETURN_STR(BTA_AG_AT_CHLD_EVT) 311 CASE_RETURN_STR(BTA_AG_AT_CHUP_EVT) 312 CASE_RETURN_STR(BTA_AG_AT_CIND_EVT) 313 CASE_RETURN_STR(BTA_AG_AT_VTS_EVT) 314 CASE_RETURN_STR(BTA_AG_AT_BINP_EVT) 315 CASE_RETURN_STR(BTA_AG_AT_BLDN_EVT) 316 CASE_RETURN_STR(BTA_AG_AT_BVRA_EVT) 317 CASE_RETURN_STR(BTA_AG_AT_NREC_EVT) 318 CASE_RETURN_STR(BTA_AG_AT_CNUM_EVT) 319 CASE_RETURN_STR(BTA_AG_AT_BTRH_EVT) 320 CASE_RETURN_STR(BTA_AG_AT_CLCC_EVT) 321 CASE_RETURN_STR(BTA_AG_AT_COPS_EVT) 322 CASE_RETURN_STR(BTA_AG_AT_UNAT_EVT) 323 CASE_RETURN_STR(BTA_AG_AT_CBC_EVT) 324 CASE_RETURN_STR(BTA_AG_AT_BAC_EVT) 325 CASE_RETURN_STR(BTA_AG_AT_BCS_EVT) 326 327 default: 328 return "UNKNOWN MSG ID"; 329 } 330 } 331 332 const char* dump_hf_client_event(UINT16 event) 333 { 334 switch(event) 335 { 336 CASE_RETURN_STR(BTA_HF_CLIENT_ENABLE_EVT) 337 CASE_RETURN_STR(BTA_HF_CLIENT_REGISTER_EVT) 338 CASE_RETURN_STR(BTA_HF_CLIENT_OPEN_EVT) 339 CASE_RETURN_STR(BTA_HF_CLIENT_CLOSE_EVT) 340 CASE_RETURN_STR(BTA_HF_CLIENT_CONN_EVT) 341 CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_OPEN_EVT) 342 CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_MSBC_OPEN_EVT) 343 CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_CLOSE_EVT) 344 CASE_RETURN_STR(BTA_HF_CLIENT_SPK_EVT) 345 CASE_RETURN_STR(BTA_HF_CLIENT_MIC_EVT) 346 CASE_RETURN_STR(BTA_HF_CLIENT_DISABLE_EVT) 347 CASE_RETURN_STR(BTA_HF_CLIENT_IND_EVT) 348 CASE_RETURN_STR(BTA_HF_CLIENT_VOICE_REC_EVT) 349 CASE_RETURN_STR(BTA_HF_CLIENT_OPERATOR_NAME_EVT) 350 CASE_RETURN_STR(BTA_HF_CLIENT_CLIP_EVT) 351 CASE_RETURN_STR(BTA_HF_CLIENT_CCWA_EVT) 352 CASE_RETURN_STR(BTA_HF_CLIENT_AT_RESULT_EVT) 353 CASE_RETURN_STR(BTA_HF_CLIENT_CLCC_EVT) 354 CASE_RETURN_STR(BTA_HF_CLIENT_CNUM_EVT) 355 CASE_RETURN_STR(BTA_HF_CLIENT_BTRH_EVT) 356 CASE_RETURN_STR(BTA_HF_CLIENT_BSIR_EVT) 357 CASE_RETURN_STR(BTA_HF_CLIENT_BINP_EVT) 358 CASE_RETURN_STR(BTA_HF_CLIENT_RING_INDICATION) 359 default: 360 return "UNKNOWN MSG ID"; 361 } 362 } 363 364 const char* dump_hh_event(UINT16 event) 365 { 366 switch(event) 367 { 368 CASE_RETURN_STR(BTA_HH_ENABLE_EVT) 369 CASE_RETURN_STR(BTA_HH_DISABLE_EVT) 370 CASE_RETURN_STR(BTA_HH_OPEN_EVT) 371 CASE_RETURN_STR(BTA_HH_CLOSE_EVT) 372 CASE_RETURN_STR(BTA_HH_GET_DSCP_EVT) 373 CASE_RETURN_STR(BTA_HH_GET_PROTO_EVT) 374 CASE_RETURN_STR(BTA_HH_GET_RPT_EVT) 375 CASE_RETURN_STR(BTA_HH_GET_IDLE_EVT) 376 CASE_RETURN_STR(BTA_HH_SET_PROTO_EVT) 377 CASE_RETURN_STR(BTA_HH_SET_RPT_EVT) 378 CASE_RETURN_STR(BTA_HH_SET_IDLE_EVT) 379 CASE_RETURN_STR(BTA_HH_VC_UNPLUG_EVT) 380 CASE_RETURN_STR(BTA_HH_ADD_DEV_EVT) 381 CASE_RETURN_STR(BTA_HH_RMV_DEV_EVT) 382 CASE_RETURN_STR(BTA_HH_API_ERR_EVT) 383 default: 384 return "UNKNOWN MSG ID"; 385 } 386 } 387 388 389 const char* dump_hf_conn_state(UINT16 event) 390 { 391 switch(event) 392 { 393 CASE_RETURN_STR(BTHF_CONNECTION_STATE_DISCONNECTED) 394 CASE_RETURN_STR(BTHF_CONNECTION_STATE_CONNECTING) 395 CASE_RETURN_STR(BTHF_CONNECTION_STATE_CONNECTED) 396 CASE_RETURN_STR(BTHF_CONNECTION_STATE_SLC_CONNECTED) 397 CASE_RETURN_STR(BTHF_CONNECTION_STATE_DISCONNECTING) 398 default: 399 return "UNKNOWN MSG ID"; 400 } 401 } 402 403 const char* dump_hf_call_state(bthf_call_state_t call_state) 404 { 405 switch(call_state) 406 { 407 CASE_RETURN_STR(BTHF_CALL_STATE_IDLE) 408 CASE_RETURN_STR(BTHF_CALL_STATE_HELD) 409 CASE_RETURN_STR(BTHF_CALL_STATE_DIALING) 410 CASE_RETURN_STR(BTHF_CALL_STATE_ALERTING) 411 CASE_RETURN_STR(BTHF_CALL_STATE_INCOMING) 412 CASE_RETURN_STR(BTHF_CALL_STATE_WAITING) 413 CASE_RETURN_STR(BTHF_CALL_STATE_ACTIVE) 414 default: 415 return "UNKNOWN CALL STATE"; 416 } 417 } 418 419 const char* dump_thread_evt(bt_cb_thread_evt evt) 420 { 421 switch(evt) 422 { 423 CASE_RETURN_STR(ASSOCIATE_JVM) 424 CASE_RETURN_STR(DISASSOCIATE_JVM) 425 426 default: 427 return "unknown thread evt"; 428 } 429 } 430 431 432 const char* dump_hf_audio_state(UINT16 event) 433 { 434 switch(event) 435 { 436 CASE_RETURN_STR(BTHF_AUDIO_STATE_DISCONNECTED) 437 CASE_RETURN_STR(BTHF_AUDIO_STATE_CONNECTING) 438 CASE_RETURN_STR(BTHF_AUDIO_STATE_CONNECTED) 439 CASE_RETURN_STR(BTHF_AUDIO_STATE_DISCONNECTING) 440 default: 441 return "UNKNOWN MSG ID"; 442 443 } 444 } 445 446 const char* dump_av_conn_state(UINT16 event) 447 { 448 switch(event) 449 { 450 CASE_RETURN_STR(BTAV_CONNECTION_STATE_DISCONNECTED) 451 CASE_RETURN_STR(BTAV_CONNECTION_STATE_CONNECTING) 452 CASE_RETURN_STR(BTAV_CONNECTION_STATE_CONNECTED) 453 CASE_RETURN_STR(BTAV_CONNECTION_STATE_DISCONNECTING) 454 default: 455 return "UNKNOWN MSG ID"; 456 } 457 } 458 459 const char* dump_av_audio_state(UINT16 event) 460 { 461 switch(event) 462 { 463 CASE_RETURN_STR(BTAV_AUDIO_STATE_REMOTE_SUSPEND) 464 CASE_RETURN_STR(BTAV_AUDIO_STATE_STOPPED) 465 CASE_RETURN_STR(BTAV_AUDIO_STATE_STARTED) 466 default: 467 return "UNKNOWN MSG ID"; 468 } 469 } 470 471 const char* dump_adapter_scan_mode(bt_scan_mode_t mode) 472 { 473 switch(mode) 474 { 475 CASE_RETURN_STR(BT_SCAN_MODE_NONE) 476 CASE_RETURN_STR(BT_SCAN_MODE_CONNECTABLE) 477 CASE_RETURN_STR(BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE) 478 479 default: 480 return "unknown scan mode"; 481 } 482 } 483 484 const char* dump_bt_status(bt_status_t status) 485 { 486 switch(status) 487 { 488 CASE_RETURN_STR(BT_STATUS_SUCCESS) 489 CASE_RETURN_STR(BT_STATUS_FAIL) 490 CASE_RETURN_STR(BT_STATUS_NOT_READY) 491 CASE_RETURN_STR(BT_STATUS_NOMEM) 492 CASE_RETURN_STR(BT_STATUS_BUSY) 493 CASE_RETURN_STR(BT_STATUS_UNSUPPORTED) 494 495 default: 496 return "unknown scan mode"; 497 } 498 } 499 500 const char *dump_rc_event(UINT8 event) 501 { 502 switch(event) { 503 CASE_RETURN_STR(BTA_AV_RC_OPEN_EVT) 504 CASE_RETURN_STR(BTA_AV_RC_CLOSE_EVT) 505 CASE_RETURN_STR(BTA_AV_REMOTE_CMD_EVT) 506 CASE_RETURN_STR(BTA_AV_REMOTE_RSP_EVT) 507 CASE_RETURN_STR(BTA_AV_VENDOR_CMD_EVT) 508 CASE_RETURN_STR(BTA_AV_VENDOR_RSP_EVT) 509 CASE_RETURN_STR(BTA_AV_META_MSG_EVT) 510 CASE_RETURN_STR(BTA_AV_RC_FEAT_EVT) 511 default: 512 return "UNKNOWN_EVENT"; 513 } 514 } 515 516 const char * dump_rc_notification_event_id(UINT8 event_id) 517 { 518 switch(event_id) 519 { 520 CASE_RETURN_STR(AVRC_EVT_PLAY_STATUS_CHANGE) 521 CASE_RETURN_STR(AVRC_EVT_TRACK_CHANGE) 522 CASE_RETURN_STR(AVRC_EVT_TRACK_REACHED_END) 523 CASE_RETURN_STR(AVRC_EVT_TRACK_REACHED_START) 524 CASE_RETURN_STR(AVRC_EVT_PLAY_POS_CHANGED) 525 CASE_RETURN_STR(AVRC_EVT_BATTERY_STATUS_CHANGE) 526 CASE_RETURN_STR(AVRC_EVT_SYSTEM_STATUS_CHANGE) 527 CASE_RETURN_STR(AVRC_EVT_APP_SETTING_CHANGE) 528 CASE_RETURN_STR(AVRC_EVT_VOLUME_CHANGE) 529 530 default: 531 return "Unhandled Event ID"; 532 } 533 } 534 535 const char* dump_rc_pdu(UINT8 pdu) 536 { 537 switch(pdu) 538 { 539 CASE_RETURN_STR(AVRC_PDU_LIST_PLAYER_APP_ATTR) 540 CASE_RETURN_STR(AVRC_PDU_LIST_PLAYER_APP_VALUES) 541 CASE_RETURN_STR(AVRC_PDU_GET_CUR_PLAYER_APP_VALUE) 542 CASE_RETURN_STR(AVRC_PDU_SET_PLAYER_APP_VALUE) 543 CASE_RETURN_STR(AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT) 544 CASE_RETURN_STR(AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT) 545 CASE_RETURN_STR(AVRC_PDU_INFORM_DISPLAY_CHARSET) 546 CASE_RETURN_STR(AVRC_PDU_INFORM_BATTERY_STAT_OF_CT) 547 CASE_RETURN_STR(AVRC_PDU_GET_ELEMENT_ATTR) 548 CASE_RETURN_STR(AVRC_PDU_GET_PLAY_STATUS) 549 CASE_RETURN_STR(AVRC_PDU_REGISTER_NOTIFICATION) 550 CASE_RETURN_STR(AVRC_PDU_REQUEST_CONTINUATION_RSP) 551 CASE_RETURN_STR(AVRC_PDU_ABORT_CONTINUATION_RSP) 552 CASE_RETURN_STR(AVRC_PDU_SET_ABSOLUTE_VOLUME) 553 default: 554 return "Unknown PDU"; 555 } 556 } 557
