1 /****************************************************************************** 2 * 3 * Copyright (C) 1998-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 #include <string.h> 20 21 #include "bt_target.h" 22 #if (HL_INCLUDED == TRUE) 23 24 #include "bta_hl_int.h" 25 #include "osi/include/osi.h" 26 #include "sdp_api.h" 27 #include "utl.h" 28 29 /******************************************************************************* 30 * 31 * Function bta_hl_fill_sup_feature_list 32 * 33 * Description Fill the supported features from teh SDP record 34 * 35 * Returns true if found, false if not 36 * If found, the passed protocol list element is filled in. 37 * 38 ******************************************************************************/ 39 bool bta_hl_fill_sup_feature_list(const tSDP_DISC_ATTR* p_attr, 40 tBTA_HL_SUP_FEATURE_LIST_ELEM* p_list) { 41 tSDP_DISC_ATTR* p_sattr; 42 uint8_t item_cnt; 43 uint8_t list_cnt = 0; 44 bool status = true; 45 46 for (p_attr = p_attr->attr_value.v.p_sub_attr; p_attr; 47 p_attr = p_attr->p_next_attr) { 48 /* mdep sequence */ 49 if (SDP_DISC_ATTR_TYPE(p_attr->attr_len_type) != DATA_ELE_SEQ_DESC_TYPE) { 50 return (false); 51 } 52 53 item_cnt = 0; 54 55 for (p_sattr = p_attr->attr_value.v.p_sub_attr; p_sattr && (item_cnt < 4); 56 p_sattr = p_sattr->p_next_attr) { 57 /* for each mdep list */ 58 59 p_list->list_elem[list_cnt].p_mdep_desp = NULL; 60 switch (item_cnt) { 61 case 0: 62 p_list->list_elem[list_cnt].mdep_id = p_sattr->attr_value.v.u8; 63 break; 64 case 1: 65 p_list->list_elem[list_cnt].data_type = p_sattr->attr_value.v.u16; 66 break; 67 case 2: 68 p_list->list_elem[list_cnt].mdep_role = 69 (tBTA_HL_MDEP_ROLE)p_sattr->attr_value.v.u8; 70 break; 71 case 3: 72 p_list->list_elem[list_cnt].p_mdep_desp = 73 (char*)p_sattr->attr_value.v.array; 74 break; 75 } 76 77 item_cnt++; 78 } 79 list_cnt++; 80 } 81 p_list->num_elems = list_cnt; 82 return (status); 83 } 84 85 /******************************************************************************* 86 * 87 * Function bta_hl_compose_supported_feature_list 88 * 89 * Description This function is called to compose a data sequence from 90 * the supported feature element list struct pointer 91 * 92 * Returns the length of the data sequence 93 * 94 ******************************************************************************/ 95 int bta_hl_compose_supported_feature_list( 96 uint8_t* p, uint16_t num_elem, 97 const tBTA_HL_SUP_FEATURE_ELEM* p_elem_list) { 98 uint16_t xx, str_len, seq_len; 99 uint8_t* p_head = p; 100 101 for (xx = 0; xx < num_elem; xx++, p_elem_list++) { 102 UINT8_TO_BE_STREAM(p, (DATA_ELE_SEQ_DESC_TYPE << 3) | SIZE_IN_NEXT_BYTE); 103 seq_len = 7; 104 str_len = 0; 105 if (p_elem_list->p_mdep_desp) { 106 str_len = strlen(p_elem_list->p_mdep_desp) + 1; 107 seq_len += str_len + 2; /* todo add a # symbol for 2 */ 108 } 109 110 *p++ = (uint8_t)seq_len; 111 112 UINT8_TO_BE_STREAM(p, (UINT_DESC_TYPE << 3) | SIZE_ONE_BYTE); 113 UINT8_TO_BE_STREAM(p, p_elem_list->mdep_id); 114 UINT8_TO_BE_STREAM(p, (UINT_DESC_TYPE << 3) | SIZE_TWO_BYTES); 115 UINT16_TO_BE_STREAM(p, p_elem_list->data_type); 116 UINT8_TO_BE_STREAM(p, (UINT_DESC_TYPE << 3) | SIZE_ONE_BYTE); 117 UINT8_TO_BE_STREAM(p, p_elem_list->mdep_role); 118 119 if (str_len) { 120 UINT8_TO_BE_STREAM(p, (TEXT_STR_DESC_TYPE << 3) | SIZE_IN_NEXT_BYTE); 121 UINT8_TO_BE_STREAM(p, str_len); 122 ARRAY_TO_BE_STREAM(p, p_elem_list->p_mdep_desp, str_len); 123 } 124 } 125 126 return (p - p_head); 127 } 128 129 /******************************************************************************* 130 * 131 * Function bta_hl_add_sup_feature_list 132 * 133 * Description This function is called to add a protocol descriptor list to 134 * a record. This would be through the SDP database maintenance 135 * API. If the protocol list already exists in the record, it 136 * is replaced with the new list. 137 * 138 * Returns true if added OK, else false 139 * 140 ******************************************************************************/ 141 bool bta_hl_add_sup_feature_list(uint32_t handle, uint16_t num_elem, 142 const tBTA_HL_SUP_FEATURE_ELEM* p_elem_list) { 143 int offset; 144 bool result; 145 uint8_t* p_buf = (uint8_t*)osi_malloc(BTA_HL_SUP_FEATURE_SDP_BUF_SIZE); 146 147 offset = bta_hl_compose_supported_feature_list(p_buf, num_elem, p_elem_list); 148 result = SDP_AddAttribute(handle, ATTR_ID_HDP_SUP_FEAT_LIST, 149 DATA_ELE_SEQ_DESC_TYPE, (uint32_t)offset, p_buf); 150 osi_free(p_buf); 151 152 return result; 153 } 154 155 /***************************************************************************** 156 * 157 * Function: bta_hl_sdp_update 158 * 159 * Purpose: Register an HDP application with SDP 160 * 161 * Parameters: 162 * 163 * Returns: void 164 * 165 ****************************************************************************/ 166 tBTA_HL_STATUS bta_hl_sdp_update(UNUSED_ATTR uint8_t app_id) { 167 uint16_t svc_class_id_list[BTA_HL_NUM_SVC_ELEMS]; 168 tSDP_PROTOCOL_ELEM proto_elem_list[BTA_HL_NUM_PROTO_ELEMS]; 169 tSDP_PROTO_LIST_ELEM add_proto_list; 170 tBTA_HL_SUP_FEATURE_LIST_ELEM sup_feature_list; 171 uint16_t browse_list[] = {UUID_SERVCLASS_PUBLIC_BROWSE_GROUP}; 172 uint8_t i, j, cnt, mdep_id, mdep_role; 173 uint8_t data_exchange_spec = BTA_HL_SDP_IEEE_11073_20601; 174 uint8_t mcap_sup_proc = BTA_HL_MCAP_SUP_PROC_MASK; 175 uint16_t profile_uuid = UUID_SERVCLASS_HDP_PROFILE; 176 uint16_t version = BTA_HL_VERSION; 177 uint8_t num_services = 1; 178 tBTA_HL_APP_CB* p_cb = BTA_HL_GET_APP_CB_PTR(0); 179 bool result = true; 180 tBTA_HL_STATUS status = BTA_HL_STATUS_OK; 181 182 if ((p_cb->sup_feature.app_role_mask == BTA_HL_MDEP_ROLE_MASK_SOURCE) && 183 (!p_cb->sup_feature.advertize_source_sdp)) { 184 return BTA_HL_STATUS_OK; 185 } 186 187 num_services = 1; 188 svc_class_id_list[0] = UUID_SERVCLASS_HDP_SOURCE; 189 if (p_cb->sup_feature.app_role_mask == BTA_HL_MDEP_ROLE_MASK_SINK) { 190 svc_class_id_list[0] = UUID_SERVCLASS_HDP_SINK; 191 } else { 192 if (p_cb->sup_feature.app_role_mask != BTA_HL_MDEP_ROLE_MASK_SOURCE) { 193 /* dual role */ 194 num_services = 2; 195 svc_class_id_list[1] = UUID_SERVCLASS_HDP_SINK; 196 } 197 } 198 result &= SDP_AddServiceClassIdList(p_cb->sdp_handle, num_services, 199 svc_class_id_list); 200 201 if (result) { 202 /* add the protocol element sequence */ 203 proto_elem_list[0].protocol_uuid = UUID_PROTOCOL_L2CAP; 204 proto_elem_list[0].num_params = 1; 205 proto_elem_list[0].params[0] = p_cb->ctrl_psm; 206 proto_elem_list[1].protocol_uuid = UUID_PROTOCOL_MCAP_CTRL; 207 proto_elem_list[1].num_params = 1; 208 proto_elem_list[1].params[0] = version; 209 result &= SDP_AddProtocolList(p_cb->sdp_handle, BTA_HL_NUM_PROTO_ELEMS, 210 proto_elem_list); 211 212 result &= 213 SDP_AddProfileDescriptorList(p_cb->sdp_handle, profile_uuid, version); 214 } 215 216 if (result) { 217 add_proto_list.num_elems = BTA_HL_NUM_ADD_PROTO_ELEMS; 218 add_proto_list.list_elem[0].protocol_uuid = UUID_PROTOCOL_L2CAP; 219 add_proto_list.list_elem[0].num_params = 1; 220 add_proto_list.list_elem[0].params[0] = p_cb->data_psm; 221 add_proto_list.list_elem[1].protocol_uuid = UUID_PROTOCOL_MCAP_DATA; 222 add_proto_list.list_elem[1].num_params = 0; 223 result &= 224 SDP_AddAdditionProtoLists(p_cb->sdp_handle, BTA_HL_NUM_ADD_PROTO_LISTS, 225 (tSDP_PROTO_LIST_ELEM*)&add_proto_list); 226 } 227 228 if (result) { 229 if (p_cb->srv_name[0]) { 230 result &= SDP_AddAttribute( 231 p_cb->sdp_handle, (uint16_t)ATTR_ID_SERVICE_NAME, 232 (uint8_t)TEXT_STR_DESC_TYPE, (uint32_t)(strlen(p_cb->srv_name) + 1), 233 (uint8_t*)p_cb->srv_name); 234 } /* end of setting optional service name */ 235 } 236 237 if (result) { 238 if (p_cb->srv_desp[0]) { 239 result &= SDP_AddAttribute( 240 p_cb->sdp_handle, (uint16_t)ATTR_ID_SERVICE_DESCRIPTION, 241 (uint8_t)TEXT_STR_DESC_TYPE, (uint32_t)(strlen(p_cb->srv_desp) + 1), 242 (uint8_t*)p_cb->srv_desp); 243 244 } /* end of setting optional service description */ 245 } 246 247 if (result) { 248 if (p_cb->provider_name[0]) { 249 result &= 250 SDP_AddAttribute(p_cb->sdp_handle, (uint16_t)ATTR_ID_PROVIDER_NAME, 251 (uint8_t)TEXT_STR_DESC_TYPE, 252 (uint32_t)(strlen(p_cb->provider_name) + 1), 253 (uint8_t*)p_cb->provider_name); 254 } /* end of setting optional provider name */ 255 } 256 257 /* add supported feture list */ 258 259 if (result) { 260 cnt = 0; 261 for (i = 1; i < BTA_HL_NUM_MDEPS; i++) { 262 if (p_cb->sup_feature.mdep[i].mdep_id) { 263 mdep_id = (uint8_t)p_cb->sup_feature.mdep[i].mdep_id; 264 mdep_role = (uint8_t)p_cb->sup_feature.mdep[i].mdep_cfg.mdep_role; 265 266 APPL_TRACE_DEBUG( 267 "num_of_mdep_data_types %d ", 268 p_cb->sup_feature.mdep[i].mdep_cfg.num_of_mdep_data_types); 269 for (j = 0; 270 j < p_cb->sup_feature.mdep[i].mdep_cfg.num_of_mdep_data_types; 271 j++) { 272 sup_feature_list.list_elem[cnt].mdep_id = mdep_id; 273 sup_feature_list.list_elem[cnt].mdep_role = mdep_role; 274 sup_feature_list.list_elem[cnt].data_type = 275 p_cb->sup_feature.mdep[i].mdep_cfg.data_cfg[j].data_type; 276 if (p_cb->sup_feature.mdep[i].mdep_cfg.data_cfg[j].desp[0] != '\0') { 277 sup_feature_list.list_elem[cnt].p_mdep_desp = 278 p_cb->sup_feature.mdep[i].mdep_cfg.data_cfg[j].desp; 279 } else { 280 sup_feature_list.list_elem[cnt].p_mdep_desp = NULL; 281 } 282 283 cnt++; 284 if (cnt == BTA_HL_NUM_SUP_FEATURE_ELEMS) { 285 result = false; 286 break; 287 } 288 } 289 } 290 } 291 sup_feature_list.num_elems = cnt; 292 result &= bta_hl_add_sup_feature_list(p_cb->sdp_handle, 293 sup_feature_list.num_elems, 294 sup_feature_list.list_elem); 295 } 296 if (result) { 297 result &= SDP_AddAttribute(p_cb->sdp_handle, ATTR_ID_HDP_DATA_EXCH_SPEC, 298 UINT_DESC_TYPE, (uint32_t)1, 299 (uint8_t*)&data_exchange_spec); 300 } 301 302 if (result) { 303 result &= 304 SDP_AddAttribute(p_cb->sdp_handle, ATTR_ID_HDP_MCAP_SUP_PROC, 305 UINT_DESC_TYPE, (uint32_t)1, (uint8_t*)&mcap_sup_proc); 306 } 307 308 if (result) { 309 result &= SDP_AddUuidSequence(p_cb->sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 310 1, browse_list); 311 } 312 313 if (result) { 314 for (i = 0; i < num_services; i++) { 315 bta_sys_add_uuid(svc_class_id_list[i]); 316 APPL_TRACE_DEBUG("dbg bta_sys_add_uuid i=%d uuid=0x%x", i, 317 svc_class_id_list[i]); // todo 318 } 319 } else { 320 if (p_cb->sdp_handle) { 321 SDP_DeleteRecord(p_cb->sdp_handle); 322 p_cb->sdp_handle = 0; 323 } 324 status = BTA_HL_STATUS_SDP_FAIL; 325 } 326 #if (BTA_HL_DEBUG == TRUE) 327 APPL_TRACE_DEBUG("bta_hl_sdp_update status=%s", bta_hl_status_code(status)); 328 #endif 329 return status; 330 } 331 332 /***************************************************************************** 333 * 334 * Function: bta_hl_sdp_register 335 * 336 * Purpose: Register an HDP application with SDP 337 * 338 * Parameters: p_cb - Pointer to MA instance control block 339 * p_service_name - MA server name 340 * inst_id - MAS instance ID 341 * msg_type - Supported message type(s) 342 * 343 * 344 * Returns: void 345 * 346 ****************************************************************************/ 347 tBTA_HL_STATUS bta_hl_sdp_register(uint8_t app_idx) { 348 uint16_t svc_class_id_list[BTA_HL_NUM_SVC_ELEMS]; 349 tSDP_PROTOCOL_ELEM proto_elem_list[BTA_HL_NUM_PROTO_ELEMS]; 350 tSDP_PROTO_LIST_ELEM add_proto_list; 351 tBTA_HL_SUP_FEATURE_LIST_ELEM sup_feature_list; 352 uint16_t browse_list[] = {UUID_SERVCLASS_PUBLIC_BROWSE_GROUP}; 353 uint8_t i, j, cnt, mdep_id, mdep_role; 354 uint8_t data_exchange_spec = BTA_HL_SDP_IEEE_11073_20601; 355 uint8_t mcap_sup_proc = BTA_HL_MCAP_SUP_PROC_MASK; 356 uint16_t profile_uuid = UUID_SERVCLASS_HDP_PROFILE; 357 uint16_t version = BTA_HL_VERSION; 358 uint8_t num_services = 1; 359 tBTA_HL_APP_CB* p_cb = BTA_HL_GET_APP_CB_PTR(app_idx); 360 bool result = true; 361 tBTA_HL_STATUS status = BTA_HL_STATUS_OK; 362 363 #if (BTA_HL_DEBUG == TRUE) 364 APPL_TRACE_DEBUG("bta_hl_sdp_register app_idx=%d", app_idx); 365 #endif 366 367 if ((p_cb->sup_feature.app_role_mask == BTA_HL_MDEP_ROLE_MASK_SOURCE) && 368 (!p_cb->sup_feature.advertize_source_sdp)) { 369 return BTA_HL_STATUS_OK; 370 } 371 372 p_cb->sdp_handle = SDP_CreateRecord(); 373 if (p_cb->sdp_handle == 0) { 374 return BTA_HL_STATUS_SDP_NO_RESOURCE; 375 } 376 377 num_services = 1; 378 svc_class_id_list[0] = UUID_SERVCLASS_HDP_SOURCE; 379 if (p_cb->sup_feature.app_role_mask == BTA_HL_MDEP_ROLE_MASK_SINK) { 380 svc_class_id_list[0] = UUID_SERVCLASS_HDP_SINK; 381 } else { 382 if (p_cb->sup_feature.app_role_mask != BTA_HL_MDEP_ROLE_MASK_SOURCE) { 383 /* dual role */ 384 num_services = 2; 385 svc_class_id_list[1] = UUID_SERVCLASS_HDP_SINK; 386 } 387 } 388 result &= SDP_AddServiceClassIdList(p_cb->sdp_handle, num_services, 389 svc_class_id_list); 390 391 if (result) { 392 /* add the protocol element sequence */ 393 proto_elem_list[0].protocol_uuid = UUID_PROTOCOL_L2CAP; 394 proto_elem_list[0].num_params = 1; 395 proto_elem_list[0].params[0] = p_cb->ctrl_psm; 396 proto_elem_list[1].protocol_uuid = UUID_PROTOCOL_MCAP_CTRL; 397 proto_elem_list[1].num_params = 1; 398 proto_elem_list[1].params[0] = version; 399 result &= SDP_AddProtocolList(p_cb->sdp_handle, BTA_HL_NUM_PROTO_ELEMS, 400 proto_elem_list); 401 402 result &= 403 SDP_AddProfileDescriptorList(p_cb->sdp_handle, profile_uuid, version); 404 } 405 406 if (result) { 407 add_proto_list.num_elems = BTA_HL_NUM_ADD_PROTO_ELEMS; 408 add_proto_list.list_elem[0].protocol_uuid = UUID_PROTOCOL_L2CAP; 409 add_proto_list.list_elem[0].num_params = 1; 410 add_proto_list.list_elem[0].params[0] = p_cb->data_psm; 411 add_proto_list.list_elem[1].protocol_uuid = UUID_PROTOCOL_MCAP_DATA; 412 add_proto_list.list_elem[1].num_params = 0; 413 result &= 414 SDP_AddAdditionProtoLists(p_cb->sdp_handle, BTA_HL_NUM_ADD_PROTO_LISTS, 415 (tSDP_PROTO_LIST_ELEM*)&add_proto_list); 416 } 417 418 if (result) { 419 if (p_cb->srv_name[0]) { 420 result &= SDP_AddAttribute( 421 p_cb->sdp_handle, (uint16_t)ATTR_ID_SERVICE_NAME, 422 (uint8_t)TEXT_STR_DESC_TYPE, (uint32_t)(strlen(p_cb->srv_name) + 1), 423 (uint8_t*)p_cb->srv_name); 424 } /* end of setting optional service name */ 425 } 426 427 if (result) { 428 if (p_cb->srv_desp[0]) { 429 result &= SDP_AddAttribute( 430 p_cb->sdp_handle, (uint16_t)ATTR_ID_SERVICE_DESCRIPTION, 431 (uint8_t)TEXT_STR_DESC_TYPE, (uint32_t)(strlen(p_cb->srv_desp) + 1), 432 (uint8_t*)p_cb->srv_desp); 433 434 } /* end of setting optional service description */ 435 } 436 437 if (result) { 438 if (p_cb->provider_name[0]) { 439 result &= 440 SDP_AddAttribute(p_cb->sdp_handle, (uint16_t)ATTR_ID_PROVIDER_NAME, 441 (uint8_t)TEXT_STR_DESC_TYPE, 442 (uint32_t)(strlen(p_cb->provider_name) + 1), 443 (uint8_t*)p_cb->provider_name); 444 } /* end of setting optional provider name */ 445 } 446 447 /* add supported feture list */ 448 449 if (result) { 450 cnt = 0; 451 for (i = 1; i <= p_cb->sup_feature.num_of_mdeps; i++) { 452 mdep_id = (uint8_t)p_cb->sup_feature.mdep[i].mdep_id; 453 mdep_role = (uint8_t)p_cb->sup_feature.mdep[i].mdep_cfg.mdep_role; 454 455 for (j = 0; j < p_cb->sup_feature.mdep[i].mdep_cfg.num_of_mdep_data_types; 456 j++) { 457 sup_feature_list.list_elem[cnt].mdep_id = mdep_id; 458 sup_feature_list.list_elem[cnt].mdep_role = mdep_role; 459 sup_feature_list.list_elem[cnt].data_type = 460 p_cb->sup_feature.mdep[i].mdep_cfg.data_cfg[j].data_type; 461 if (p_cb->sup_feature.mdep[i].mdep_cfg.data_cfg[j].desp[0] != '\0') { 462 sup_feature_list.list_elem[cnt].p_mdep_desp = 463 p_cb->sup_feature.mdep[i].mdep_cfg.data_cfg[j].desp; 464 } else { 465 sup_feature_list.list_elem[cnt].p_mdep_desp = NULL; 466 } 467 468 cnt++; 469 if (cnt == BTA_HL_NUM_SUP_FEATURE_ELEMS) { 470 result = false; 471 break; 472 } 473 } 474 } 475 sup_feature_list.num_elems = cnt; 476 result &= bta_hl_add_sup_feature_list(p_cb->sdp_handle, 477 sup_feature_list.num_elems, 478 sup_feature_list.list_elem); 479 } 480 if (result) { 481 result &= SDP_AddAttribute(p_cb->sdp_handle, ATTR_ID_HDP_DATA_EXCH_SPEC, 482 UINT_DESC_TYPE, (uint32_t)1, 483 (uint8_t*)&data_exchange_spec); 484 } 485 486 if (result) { 487 result &= 488 SDP_AddAttribute(p_cb->sdp_handle, ATTR_ID_HDP_MCAP_SUP_PROC, 489 UINT_DESC_TYPE, (uint32_t)1, (uint8_t*)&mcap_sup_proc); 490 } 491 492 if (result) { 493 result &= SDP_AddUuidSequence(p_cb->sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 494 1, browse_list); 495 } 496 497 if (result) { 498 for (i = 0; i < num_services; i++) { 499 bta_sys_add_uuid(svc_class_id_list[i]); 500 APPL_TRACE_DEBUG("dbg bta_sys_add_uuid i=%d uuid=0x%x", i, 501 svc_class_id_list[i]); // todo 502 } 503 } else { 504 if (p_cb->sdp_handle) { 505 SDP_DeleteRecord(p_cb->sdp_handle); 506 p_cb->sdp_handle = 0; 507 } 508 status = BTA_HL_STATUS_SDP_FAIL; 509 } 510 #if (BTA_HL_DEBUG == TRUE) 511 APPL_TRACE_DEBUG("bta_hl_sdp_register status=%s", bta_hl_status_code(status)); 512 #endif 513 return status; 514 } 515 516 /******************************************************************************* 517 * 518 * Function bta_hl_find_sink_or_src_srv_class_in_db 519 * 520 * Description This function queries an SDP database for either a HDP Sink 521 * or Source service class ID. 522 * If the p_start_rec pointer is NULL, it looks from the 523 * beginning of the database, else it continues from the next 524 * record after p_start_rec. 525 * 526 * Returns Pointer to record containing service class, or NULL 527 * 528 ******************************************************************************/ 529 tSDP_DISC_REC* bta_hl_find_sink_or_src_srv_class_in_db( 530 const tSDP_DISCOVERY_DB* p_db, const tSDP_DISC_REC* p_start_rec) { 531 tSDP_DISC_REC* p_rec; 532 tSDP_DISC_ATTR *p_attr, *p_sattr; 533 534 /* Must have a valid database */ 535 if (p_db == NULL) return (NULL); 536 537 if (!p_start_rec) { 538 p_rec = p_db->p_first_rec; 539 } else { 540 p_rec = p_start_rec->p_next_rec; 541 } 542 543 while (p_rec) { 544 p_attr = p_rec->p_first_attr; 545 while (p_attr) { 546 if ((p_attr->attr_id == ATTR_ID_SERVICE_CLASS_ID_LIST) && 547 (SDP_DISC_ATTR_TYPE(p_attr->attr_len_type) == 548 DATA_ELE_SEQ_DESC_TYPE)) { 549 for (p_sattr = p_attr->attr_value.v.p_sub_attr; p_sattr; 550 p_sattr = p_sattr->p_next_attr) { 551 if ((SDP_DISC_ATTR_TYPE(p_sattr->attr_len_type) == UUID_DESC_TYPE) && 552 (SDP_DISC_ATTR_LEN(p_sattr->attr_len_type) == 2) && 553 ((p_sattr->attr_value.v.u16 == UUID_SERVCLASS_HDP_SINK) || 554 (p_sattr->attr_value.v.u16 == UUID_SERVCLASS_HDP_SOURCE))) { 555 return (p_rec); 556 } 557 } 558 break; 559 } 560 561 p_attr = p_attr->p_next_attr; 562 } 563 564 p_rec = p_rec->p_next_rec; 565 } 566 /* If here, no matching UUID found */ 567 568 #if (BTA_HL_DEBUG == TRUE) 569 APPL_TRACE_DEBUG("bta_hl_find_sink_or_src_srv_class_in_db failed"); 570 #endif 571 572 return (NULL); 573 } 574 #endif /* HL_INCLUDED */ 575
