1 /* 2 * Copyright (C) 2022 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "le_audio_broadcast_assistant.c" 39 40 /* 41 * LE Audio Broadcast Assistant 42 */ 43 44 45 #include "btstack_config.h" 46 47 #include <stdint.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <inttypes.h> 52 53 #include "ad_parser.h" 54 #include "ble/sm.h" 55 #include "bluetooth_data_types.h" 56 #include "bluetooth_gatt.h" 57 #include "btstack_audio.h" 58 #include "btstack_debug.h" 59 #include "btstack_event.h" 60 #include "btstack_lc3.h" 61 #include "btstack_run_loop.h" 62 #include "btstack_stdin.h" 63 #include "btstack_util.h" 64 #include "gap.h" 65 #include "hci.h" 66 #include "l2cap.h" 67 #include "le-audio/gatt-service/broadcast_audio_scan_service_client.h" 68 #include "le-audio/le_audio_base_parser.h" 69 70 static void show_usage(void); 71 72 static enum { 73 APP_W4_WORKING, 74 APP_W4_BROADCAST_SINK_AND_SCAN_DELEGATOR_ADV, 75 APP_W4_PA_AND_BIG_INFO, 76 APP_W4_BIG_SYNC_ESTABLISHED, 77 APP_W4_SCAN_DELEGATOR_CONNECTION, 78 APP_IDLE 79 } app_state = APP_W4_WORKING; 80 81 // 82 static btstack_packet_callback_registration_t hci_event_callback_registration; 83 static btstack_packet_callback_registration_t sm_event_callback_registration; 84 85 static bool have_scan_delegator; 86 static bool have_broadcast_source; 87 static bool have_base; 88 static bool have_big_info; 89 static bool manual_mode; 90 91 // broadcast sink info 92 static char broadcast_source_name[20]; 93 static bd_addr_t broadcast_source; 94 static bd_addr_type_t broadcast_source_type; 95 static uint8_t broadcast_source_sid; 96 static uint32_t broadcast_id; 97 static uint16_t broadcast_source_pa_interval; 98 99 // broadcast info 100 static hci_con_handle_t sync_handle; 101 static uint8_t encryption; 102 static uint8_t broadcast_code [] = {0x01, 0x02, 0x68, 0x05, 0x53, 0xF1, 0x41, 0x5A, 0xA2, 0x65, 0xBB, 0xAF, 0xC6, 0xEA, 0x03, 0xB8, }; 103 static uint8_t num_bis; 104 static uint32_t bis_sync_mask; 105 static uint32_t sampling_frequency_hz; 106 static btstack_lc3_frame_duration_t frame_duration; 107 static uint16_t octets_per_frame; 108 109 // scan delegator info 110 static char scan_delegator_name[20]; 111 static bd_addr_t scan_delegator; 112 static bd_addr_type_t scan_delegator_type; 113 static hci_con_handle_t scan_delegator_handle; 114 115 // BASS 116 #define BASS_CLIENT_NUM_SOURCES 1 117 static bass_client_connection_t bass_connection; 118 static bass_client_source_t bass_sources[BASS_CLIENT_NUM_SOURCES]; 119 static bass_source_data_t bass_source_data; 120 static uint16_t bass_cid; 121 static uint8_t bass_source_id; 122 123 static void handle_periodic_advertisement(const uint8_t * packet, uint16_t size){ 124 125 // periodic advertisement contains the BASE 126 // TODO: BASE might be split across multiple advertisements 127 const uint8_t * adv_data = hci_subevent_le_periodic_advertising_report_get_data(packet); 128 uint16_t adv_size = hci_subevent_le_periodic_advertising_report_get_data_length(packet); 129 uint8_t adv_status = hci_subevent_le_periodic_advertising_report_get_data_status(packet); 130 131 if (adv_status != 0) { 132 printf("Periodic Advertisement (status %u): ", adv_status); 133 printf_hexdump(adv_data, adv_size); 134 return; 135 } 136 137 le_audio_base_parser_t parser; 138 bool ok = le_audio_base_parser_init(&parser, adv_data, adv_size); 139 if (ok == false){ 140 return; 141 } 142 have_base = true; 143 144 printf("BASE:\n"); 145 uint32_t presentation_delay = le_audio_base_parser_get_presentation_delay(&parser); 146 printf("- presentation delay: %"PRIu32" us\n", presentation_delay); 147 uint8_t num_subgroups = le_audio_base_parser_get_num_subgroups(&parser); 148 // Cache in new source struct 149 bass_source_data.subgroups_num = num_subgroups; 150 printf("- num subgroups: %u\n", num_subgroups); 151 uint8_t i; 152 for (i=0;i<num_subgroups;i++){ 153 154 // Cache in new source struct 155 bass_source_data.subgroups[i].bis_sync = 0; 156 157 // Level 2: Subgroup Level 158 num_bis = le_audio_base_parser_subgroup_get_num_bis(&parser); 159 printf(" - num bis[%u]: %u\n", i, num_bis); 160 uint8_t codec_specific_configuration_length = le_audio_base_parser_bis_get_codec_specific_configuration_length(&parser); 161 const uint8_t * codec_specific_configuration = le_audio_base_parser_subgroup_get_codec_specific_configuration(&parser); 162 printf(" - codec specific config[%u]: ", i); 163 printf_hexdump(codec_specific_configuration, codec_specific_configuration_length); 164 // parse config to get sampling frequency and frame duration 165 uint8_t codec_offset = 0; 166 while ((codec_offset + 1) < codec_specific_configuration_length){ 167 uint8_t ltv_len = codec_specific_configuration[codec_offset++]; 168 uint8_t ltv_type = codec_specific_configuration[codec_offset]; 169 const uint32_t sampling_frequency_map[] = { 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, 88200, 96000, 176400, 192000, 384000 }; 170 uint8_t sampling_frequency_index; 171 uint8_t frame_duration_index; 172 switch (ltv_type){ 173 case 0x01: // sampling frequency 174 sampling_frequency_index = codec_specific_configuration[codec_offset+1]; 175 // TODO: check range 176 sampling_frequency_hz = sampling_frequency_map[sampling_frequency_index - 1]; 177 printf(" - sampling frequency[%u]: %u\n", i, sampling_frequency_hz); 178 break; 179 case 0x02: // 0 = 7.5, 1 = 10 ms 180 frame_duration_index = codec_specific_configuration[codec_offset+1]; 181 frame_duration = (frame_duration_index == 0) ? BTSTACK_LC3_FRAME_DURATION_7500US : BTSTACK_LC3_FRAME_DURATION_10000US; 182 printf(" - frame duration[%u]: %s ms\n", i, (frame_duration == BTSTACK_LC3_FRAME_DURATION_7500US) ? "7.5" : "10"); 183 break; 184 case 0x04: // octets per coding frame 185 octets_per_frame = little_endian_read_16(codec_specific_configuration, codec_offset+1); 186 printf(" - octets per codec frame[%u]: %u\n", i, octets_per_frame); 187 break; 188 default: 189 break; 190 } 191 codec_offset += ltv_len; 192 } 193 uint8_t metadata_length = le_audio_base_parser_subgroup_get_metadata_length(&parser); 194 const uint8_t * meta_data = le_audio_base_subgroup_parser_get_metadata(&parser); 195 printf(" - meta data[%u]: ", i); 196 printf_hexdump(meta_data, metadata_length); 197 uint8_t k; 198 for (k=0;k<num_bis;k++){ 199 // Level 3: BIS Level 200 uint8_t bis_index = le_audio_base_parser_bis_get_index(&parser); 201 202 // check value 203 // double check message 204 205 // Cache in new source struct 206 bis_sync_mask |= 1 << (bis_index-1); 207 208 bass_source_data.subgroups[i].metadata_length = 0; 209 memset(&bass_source_data.subgroups[i].metadata, 0, sizeof(le_audio_metadata_t)); 210 211 printf(" - bis index[%u][%u]: %u\n", i, k, bis_index); 212 codec_specific_configuration_length = le_audio_base_parser_bis_get_codec_specific_configuration_length(&parser); 213 codec_specific_configuration = le_audio_base_bis_parser_get_codec_specific_configuration(&parser); 214 printf(" - codec specific config[%u][%u]: ", i, k); 215 printf_hexdump(codec_specific_configuration, codec_specific_configuration_length); 216 217 // parse next BIS 218 le_audio_base_parser_bis_next(&parser); 219 } 220 221 // parse next subgroup 222 le_audio_base_parser_subgroup_next(&parser); 223 } 224 } 225 226 static void start_scanning() { 227 app_state = APP_W4_BROADCAST_SINK_AND_SCAN_DELEGATOR_ADV; 228 have_base = false; 229 have_big_info = false; 230 gap_set_scan_params(1, 0x30, 0x30, 0); 231 gap_start_scan(); 232 printf("Start scan..\n"); 233 } 234 235 static void have_base_and_big_info(void){ 236 printf("Connecting to Scan Delegator/Sink!\n"); 237 238 // todo: connect to scan delegator 239 app_state = APP_W4_SCAN_DELEGATOR_CONNECTION; 240 gap_connect(scan_delegator, scan_delegator_type); 241 } 242 243 static void handle_big_info(const uint8_t * packet, uint16_t size){ 244 printf("BIG Info advertising report\n"); 245 sync_handle = hci_subevent_le_biginfo_advertising_report_get_sync_handle(packet); 246 encryption = hci_subevent_le_biginfo_advertising_report_get_encryption(packet); 247 if (encryption) { 248 printf("Stream is encrypted\n"); 249 } 250 have_big_info = true; 251 } 252 253 static void add_source() {// setup bass source info 254 printf("BASS Client: add source with BIS Sync 0x%04x\n", bass_source_data.subgroups[0].bis_sync_state); 255 bass_source_data.address_type = broadcast_source_type; 256 memcpy(bass_source_data.address, broadcast_source, 6); 257 bass_source_data.adv_sid = broadcast_source_sid; 258 bass_source_data.broadcast_id = broadcast_id; 259 bass_source_data.pa_sync = LE_AUDIO_PA_SYNC_SYNCHRONIZE_TO_PA_PAST_AVAILABLE; 260 bass_source_data.pa_interval = broadcast_source_pa_interval; 261 // bass_source_new.subgroups_num set in BASE parser 262 // bass_source_new.subgroup[i].* set in BASE parser 263 264 // add bass source 265 broadcast_audio_scan_service_client_add_source(bass_cid, &bass_source_data); 266 } 267 268 static void bass_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 269 UNUSED(channel); 270 UNUSED(size); 271 272 if (packet_type != HCI_EVENT_PACKET) return; 273 if (hci_event_packet_get_type(packet) != HCI_EVENT_GATTSERVICE_META) return; 274 275 const bass_source_data_t * source_data; 276 277 switch (hci_event_gattservice_meta_get_subevent_code(packet)) { 278 case GATTSERVICE_SUBEVENT_BASS_CONNECTED: 279 if (gattservice_subevent_bass_connected_get_status(packet) != ERROR_CODE_SUCCESS){ 280 printf("BASS client connection failed, cid 0x%02x, con_handle 0x%02x, status 0x%02x\n", 281 bass_cid, scan_delegator_handle, 282 gattservice_subevent_bass_connected_get_status(packet)); 283 return; 284 } 285 printf("BASS client connected, cid 0x%02x\n", bass_cid); 286 287 if ((have_big_info == false) || (have_base == false)) break; 288 if (manual_mode) return; 289 290 bass_source_data.subgroups[0].bis_sync_state = bis_sync_mask; 291 bass_source_data.subgroups[0].bis_sync = bis_sync_mask; 292 add_source(); 293 break; 294 case GATTSERVICE_SUBEVENT_BASS_SOURCE_OPERATION_COMPLETE: 295 if (gattservice_subevent_bass_source_operation_complete_get_status(packet) != ERROR_CODE_SUCCESS){ 296 printf("BASS client source operation failed, status 0x%02x\n", gattservice_subevent_bass_source_operation_complete_get_status(packet)); 297 return; 298 } 299 300 if ( gattservice_subevent_bass_source_operation_complete_get_opcode(packet) == (uint8_t)BASS_OPCODE_ADD_SOURCE ){ 301 // TODO: set state to 'wait for source_id" 302 printf("BASS client add source operation completed, wait for source_id\n"); 303 } 304 break; 305 case GATTSERVICE_SUBEVENT_BASS_NOTIFICATION_COMPLETE: 306 // store source_id 307 bass_source_id = gattservice_subevent_bass_notification_complete_get_source_id(packet); 308 printf("BASS client notification, source_id = 0x%02x\n", bass_source_id); 309 source_data = broadcast_audio_scan_service_client_get_source_data(bass_cid, bass_source_id); 310 btstack_assert(source_data != NULL); 311 312 switch (source_data->pa_sync_state){ 313 case LE_AUDIO_PA_SYNC_STATE_SYNCINFO_REQUEST: 314 // start pa sync transfer 315 printf("LE_AUDIO_PA_SYNC_STATE_SYNCINFO_REQUEST -> Start PAST\n"); 316 // TODO: unclear why this needs to be shifted for PAST with TS to get test green 317 uint16_t service_data = bass_source_id << 8; 318 gap_periodic_advertising_sync_transfer_send(scan_delegator_handle, service_data, sync_handle); 319 break; 320 default: 321 break; 322 } 323 324 // check if Broadcast Code is requested 325 if (manual_mode == false){ 326 le_audio_big_encryption_t big_encryption; 327 uint8_t bad_code[16]; 328 broadcast_audio_scan_service_client_get_encryption_state(bass_cid, bass_source_id, &big_encryption, bad_code); 329 if (big_encryption == LE_AUDIO_BIG_ENCRYPTION_BROADCAST_CODE_REQUIRED){ 330 printf("LE_AUDIO_BIG_ENCRYPTION_BROADCAST_CODE_REQUIRED -> send Broadcast Code\n"); 331 broadcast_audio_scan_service_client_set_broadcast_code(bass_cid, bass_source_id, broadcast_code); 332 } 333 } 334 break; 335 default: 336 break; 337 } 338 } 339 340 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 341 UNUSED(channel); 342 if (packet_type != HCI_EVENT_PACKET) return; 343 switch (packet[0]) { 344 case BTSTACK_EVENT_STATE: 345 switch(btstack_event_state_get_state(packet)) { 346 case HCI_STATE_WORKING: 347 app_state = APP_IDLE; 348 #ifdef ENABLE_DEMO_MODE 349 start_scanning(); 350 #else 351 show_usage(); 352 #endif 353 break; 354 case HCI_STATE_OFF: 355 printf("Goodbye\n"); 356 exit(0); 357 break; 358 default: 359 break; 360 } 361 break; 362 case GAP_EVENT_EXTENDED_ADVERTISING_REPORT: 363 { 364 if (app_state != APP_W4_BROADCAST_SINK_AND_SCAN_DELEGATOR_ADV) break; 365 366 uint8_t adv_size = gap_event_extended_advertising_report_get_data_length(packet); 367 const uint8_t * adv_data = gap_event_extended_advertising_report_get_data(packet); 368 369 ad_context_t context; 370 bool found_scan_delegator = false; 371 bool found_broadcast_source = false; 372 bool found_name = false; 373 uint8_t adv_name[31]; 374 375 uint16_t uuid; 376 for (ad_iterator_init(&context, adv_size, adv_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 377 uint8_t data_type = ad_iterator_get_data_type(&context); 378 uint8_t size = ad_iterator_get_data_len(&context); 379 const uint8_t *data = ad_iterator_get_data(&context); 380 switch (data_type){ 381 case BLUETOOTH_DATA_TYPE_SERVICE_DATA_16_BIT_UUID: 382 uuid = little_endian_read_16(data, 0); 383 switch (uuid){ 384 case ORG_BLUETOOTH_SERVICE_BROADCAST_AUDIO_ANNOUNCEMENT_SERVICE: 385 broadcast_id = little_endian_read_24(data, 2); 386 found_broadcast_source = true; 387 break; 388 case ORG_BLUETOOTH_SERVICE_BROADCAST_AUDIO_SCAN_SERVICE: 389 found_scan_delegator = true; 390 break; 391 default: 392 break; 393 } 394 break; 395 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 396 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 397 size = btstack_min(sizeof(adv_name) - 1, size); 398 memcpy(adv_name, data, size); 399 adv_name[size] = 0; 400 found_name = true; 401 break; 402 default: 403 break; 404 } 405 } 406 407 if ((found_scan_delegator == false) && (found_broadcast_source == false)) break; 408 409 if ((have_scan_delegator == false) && found_scan_delegator){ 410 have_scan_delegator = true; 411 gap_event_extended_advertising_report_get_address(packet, scan_delegator); 412 scan_delegator_type = gap_event_extended_advertising_report_get_address_type(packet); 413 if (found_name){ 414 btstack_strcpy(scan_delegator_name, sizeof(scan_delegator_name), (const char *) adv_name); 415 } else { 416 scan_delegator_name[0] = 0; 417 } 418 printf("Broadcast sink found, addr %s, name: '%s'\n", bd_addr_to_str(scan_delegator), scan_delegator_name); 419 gap_whitelist_add(scan_delegator_type, scan_delegator); 420 } 421 422 if ((have_broadcast_source == false) && found_broadcast_source){ 423 have_broadcast_source = true; 424 gap_event_extended_advertising_report_get_address(packet, broadcast_source); 425 broadcast_source_type = gap_event_extended_advertising_report_get_address_type(packet); 426 broadcast_source_sid = gap_event_extended_advertising_report_get_advertising_sid(packet); 427 if (found_name){ 428 btstack_strcpy(broadcast_source_name, sizeof(broadcast_source_name), (const char *) adv_name); 429 } else { 430 broadcast_source_name[0] = 0; 431 } 432 printf("Broadcast source found, addr %s, name: '%s'\n", bd_addr_to_str(broadcast_source), broadcast_source_name); 433 gap_whitelist_add(broadcast_source_type, broadcast_source); 434 } 435 436 if ((have_broadcast_source && have_scan_delegator) == false) break; 437 438 printf("Start Periodic Advertising Sync\n"); 439 440 // ignore other advertisements 441 gap_set_scan_params(1, 0x30, 0x30, 1); 442 // sync to PA 443 gap_periodic_advertiser_list_clear(); 444 gap_periodic_advertiser_list_add(broadcast_source_type, broadcast_source, broadcast_source_sid); 445 app_state = APP_W4_PA_AND_BIG_INFO; 446 gap_periodic_advertising_create_sync(0x01, broadcast_source_sid, broadcast_source_type, broadcast_source, 0, 1000, 0); 447 break; 448 } 449 450 case HCI_EVENT_LE_META: 451 switch(hci_event_le_meta_get_subevent_code(packet)) { 452 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 453 sync_handle = hci_subevent_le_periodic_advertising_sync_establishment_get_sync_handle(packet); 454 broadcast_source_pa_interval = hci_subevent_le_periodic_advertising_sync_establishment_get_periodic_advertising_interval(packet); 455 printf("Periodic advertising sync with handle 0x%04x established\n", sync_handle); 456 break; 457 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_REPORT: 458 if (have_base) break; 459 handle_periodic_advertisement(packet, size); 460 if (have_base & have_big_info){ 461 have_base_and_big_info(); 462 } 463 break; 464 case HCI_SUBEVENT_LE_BIGINFO_ADVERTISING_REPORT: 465 if (have_big_info) break; 466 handle_big_info(packet, size); 467 if (have_base & have_big_info){ 468 have_base_and_big_info(); 469 } 470 break; 471 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 472 printf("BIG Sync Lost\n"); 473 { 474 const btstack_audio_sink_t * sink = btstack_audio_sink_get_instance(); 475 if (sink != NULL) { 476 sink->stop_stream(); 477 sink->close(); 478 } 479 } 480 // start over 481 start_scanning(); 482 break; 483 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 484 if (hci_subevent_le_connection_complete_get_status(packet) != ERROR_CODE_SUCCESS) break; 485 scan_delegator_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 486 printf("Connection complete, handle 0x%04x\n", scan_delegator_handle); 487 broadcast_audio_scan_service_client_connect(&bass_connection, 488 bass_sources, 489 BASS_CLIENT_NUM_SOURCES, 490 scan_delegator_handle, 491 &bass_cid); 492 break; 493 default: 494 break; 495 } 496 break; 497 case SM_EVENT_JUST_WORKS_REQUEST: 498 printf("Just Works requested\n"); 499 sm_just_works_confirm(sm_event_just_works_request_get_handle(packet)); 500 break; 501 default: 502 break; 503 } 504 } 505 506 static void show_usage(void){ 507 printf("\n--- LE Audio Broadcast Assistant Test Console ---\n"); 508 printf("s - setup LE Broadcast Sink with Broadcast Source via Scan Delegator\n"); 509 printf("c - scan and connect to Scan Delegator\n"); 510 printf("a - add source with BIS Sync 0x%08x\n", bis_sync_mask); 511 printf("A - add source with BIS Sync 0x00000000 (do not sync)\n"); 512 printf("m - modify source to PA Sync = 0, bis sync = 0x00000000\n"); 513 printf("b - send Broadcast Code: "); 514 printf_hexdump(broadcast_code, sizeof(broadcast_code)); 515 printf("r - remove source\n"); 516 printf("---\n"); 517 } 518 519 static void stdin_process(char c){ 520 switch (c){ 521 case 's': 522 if (app_state != APP_IDLE) break; 523 manual_mode = false; 524 start_scanning(); 525 break; 526 case 'c': 527 manual_mode = true; 528 start_scanning(); 529 break; 530 case 'a': 531 bass_source_data.subgroups[0].bis_sync_state = bis_sync_mask; 532 bass_source_data.subgroups[0].bis_sync = bis_sync_mask; 533 add_source(); 534 break; 535 case 'A': 536 bass_source_data.subgroups[0].bis_sync_state = 0; 537 bass_source_data.subgroups[0].bis_sync = 0; 538 add_source(); 539 break; 540 case 'm': 541 bass_source_data.pa_sync = LE_AUDIO_PA_SYNC_DO_NOT_SYNCHRONIZE_TO_PA; 542 bass_source_data.subgroups[0].bis_sync_state = 0; 543 broadcast_audio_scan_service_client_modify_source(bass_cid, bass_source_id, &bass_source_data); 544 break; 545 case 'r': 546 broadcast_audio_scan_service_client_remove_source(bass_cid, bass_source_id); 547 break; 548 case 'b': 549 broadcast_audio_scan_service_client_set_broadcast_code(bass_cid, bass_source_id, broadcast_code); 550 break; 551 case '\n': 552 case '\r': 553 break; 554 default: 555 show_usage(); 556 break; 557 558 } 559 } 560 561 int btstack_main(int argc, const char * argv[]); 562 int btstack_main(int argc, const char * argv[]){ 563 (void) argv; 564 (void) argc; 565 566 l2cap_init(); 567 sm_init(); 568 gatt_client_init(); 569 570 // register for HCI events 571 hci_event_callback_registration.callback = &packet_handler; 572 hci_add_event_handler(&hci_event_callback_registration); 573 574 // register for SM events 575 sm_event_callback_registration.callback = &packet_handler; 576 sm_add_event_handler(&sm_event_callback_registration); 577 578 broadcast_audio_scan_service_client_init(&bass_packet_handler); 579 580 // turn on! 581 hci_power_control(HCI_POWER_ON); 582 583 btstack_stdin_setup(stdin_process); 584 return 0; 585 } 586