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_util.h" 69 #include "le-audio/le_audio_base_parser.h" 70 71 static void show_usage(void); 72 73 static enum { 74 APP_W4_WORKING, 75 APP_W4_BROADCAST_SOURCE_AND_SCAN_DELEGATOR_ADV, 76 APP_W4_PA_AND_BIG_INFO, 77 APP_W4_BIG_SYNC_ESTABLISHED, 78 APP_W4_SCAN_DELEGATOR_CONNECTION, 79 APP_IDLE 80 } app_state = APP_W4_WORKING; 81 82 // 83 static btstack_packet_callback_registration_t hci_event_callback_registration; 84 static btstack_packet_callback_registration_t sm_event_callback_registration; 85 86 static bool have_scan_delegator; 87 static bool have_broadcast_source; 88 static bool have_base; 89 static bool have_big_info; 90 static bool manual_mode; 91 92 // broadcast sink info 93 #define NUM_BROADCAST_SOURCES 5 94 #define BROADCAST_SOURCE_NAME_LEN 20 95 struct { 96 char name[BROADCAST_SOURCE_NAME_LEN]; 97 bd_addr_t addr; 98 bd_addr_type_t addr_type; 99 uint8_t sid; 100 uint32_t broadcast_id; 101 uint16_t pa_interval; 102 } broadcast_sources[NUM_BROADCAST_SOURCES]; 103 static uint8_t broadcast_source_current = 0; 104 105 // broadcast info 106 static hci_con_handle_t sync_handle; 107 static uint8_t encryption; 108 static uint8_t broadcast_code [] = {0x01, 0x02, 0x68, 0x05, 0x53, 0xF1, 0x41, 0x5A, 0xA2, 0x65, 0xBB, 0xAF, 0xC6, 0xEA, 0x03, 0xB8, }; 109 static uint8_t num_bis; 110 static uint32_t bis_sync_mask; 111 static uint32_t sampling_frequency_hz; 112 static btstack_lc3_frame_duration_t frame_duration; 113 static uint16_t octets_per_frame; 114 115 // scan delegator info 116 static char scan_delegator_name[20]; 117 static bd_addr_t scan_delegator; 118 static bd_addr_type_t scan_delegator_type; 119 static hci_con_handle_t scan_delegator_handle; 120 121 // BASS 122 #define BASS_CLIENT_NUM_SOURCES 1 123 static bass_client_connection_t bass_connection; 124 static bass_client_source_t bass_sources[BASS_CLIENT_NUM_SOURCES]; 125 static bass_source_data_t bass_source_data; 126 static uint16_t bass_cid; 127 static uint8_t bass_source_id; 128 129 // test device name 130 static const char test_device_name[] = "OnePlus Buds Pro 2"; 131 132 static void handle_periodic_advertisement(const uint8_t * packet, uint16_t size){ 133 134 // periodic advertisement contains the BASE 135 // TODO: BASE might be split across multiple advertisements 136 const uint8_t * adv_data = hci_subevent_le_periodic_advertising_report_get_data(packet); 137 uint16_t adv_size = hci_subevent_le_periodic_advertising_report_get_data_length(packet); 138 uint8_t adv_status = hci_subevent_le_periodic_advertising_report_get_data_status(packet); 139 140 if (adv_status != 0) { 141 printf("Periodic Advertisement (status %u): ", adv_status); 142 printf_hexdump(adv_data, adv_size); 143 return; 144 } 145 146 le_audio_base_parser_t parser; 147 bool ok = le_audio_base_parser_init(&parser, adv_data, adv_size); 148 if (ok == false){ 149 return; 150 } 151 have_base = true; 152 153 printf("BASE:\n"); 154 uint32_t presentation_delay = le_audio_base_parser_get_presentation_delay(&parser); 155 printf("- presentation delay: %"PRIu32" us\n", presentation_delay); 156 uint8_t num_subgroups = le_audio_base_parser_get_num_subgroups(&parser); 157 // Cache in new source struct 158 bass_source_data.subgroups_num = num_subgroups; 159 printf("- num subgroups: %u\n", num_subgroups); 160 uint8_t i; 161 for (i=0;i<num_subgroups;i++){ 162 163 // Cache in new source struct 164 bass_source_data.subgroups[i].bis_sync = 0; 165 166 // Level 2: Subgroup Level 167 num_bis = le_audio_base_parser_subgroup_get_num_bis(&parser); 168 printf(" - num bis[%u]: %u\n", i, num_bis); 169 uint8_t codec_specific_configuration_length = le_audio_base_parser_bis_get_codec_specific_configuration_length(&parser); 170 const uint8_t * codec_specific_configuration = le_audio_base_parser_subgroup_get_codec_specific_configuration(&parser); 171 printf(" - codec specific config[%u]: ", i); 172 printf_hexdump(codec_specific_configuration, codec_specific_configuration_length); 173 // parse config to get sampling frequency and frame duration 174 uint8_t codec_offset = 0; 175 while ((codec_offset + 1) < codec_specific_configuration_length){ 176 uint8_t ltv_len = codec_specific_configuration[codec_offset++]; 177 uint8_t ltv_type = codec_specific_configuration[codec_offset]; 178 const uint32_t sampling_frequency_map[] = { 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, 88200, 96000, 176400, 192000, 384000 }; 179 uint8_t sampling_frequency_index; 180 uint8_t frame_duration_index; 181 switch (ltv_type){ 182 case 0x01: // sampling frequency 183 sampling_frequency_index = codec_specific_configuration[codec_offset+1]; 184 // TODO: check range 185 sampling_frequency_hz = sampling_frequency_map[sampling_frequency_index - 1]; 186 printf(" - sampling frequency[%u]: %u\n", i, sampling_frequency_hz); 187 break; 188 case 0x02: // 0 = 7.5, 1 = 10 ms 189 frame_duration_index = codec_specific_configuration[codec_offset+1]; 190 frame_duration = le_audio_util_get_btstack_lc3_frame_duration(frame_duration_index); 191 printf(" - frame duration[%u]: %u us\n", i, le_audio_get_frame_duration_us(frame_duration_index)); 192 break; 193 case 0x04: // octets per coding frame 194 octets_per_frame = little_endian_read_16(codec_specific_configuration, codec_offset+1); 195 printf(" - octets per codec frame[%u]: %u\n", i, octets_per_frame); 196 break; 197 default: 198 break; 199 } 200 codec_offset += ltv_len; 201 } 202 uint8_t metadata_length = le_audio_base_parser_subgroup_get_metadata_length(&parser); 203 const uint8_t * meta_data = le_audio_base_subgroup_parser_get_metadata(&parser); 204 printf(" - meta data[%u]: ", i); 205 printf_hexdump(meta_data, metadata_length); 206 uint8_t k; 207 for (k=0;k<num_bis;k++){ 208 // Level 3: BIS Level 209 uint8_t bis_index = le_audio_base_parser_bis_get_index(&parser); 210 211 // check value 212 // double check message 213 214 // Cache in new source struct 215 bis_sync_mask |= 1 << (bis_index-1); 216 217 bass_source_data.subgroups[i].metadata_length = 0; 218 memset(&bass_source_data.subgroups[i].metadata, 0, sizeof(le_audio_metadata_t)); 219 220 printf(" - bis index[%u][%u]: %u\n", i, k, bis_index); 221 codec_specific_configuration_length = le_audio_base_parser_bis_get_codec_specific_configuration_length(&parser); 222 codec_specific_configuration = le_audio_base_bis_parser_get_codec_specific_configuration(&parser); 223 printf(" - codec specific config[%u][%u]: ", i, k); 224 printf_hexdump(codec_specific_configuration, codec_specific_configuration_length); 225 226 // parse next BIS 227 le_audio_base_parser_bis_next(&parser); 228 } 229 230 // parse next subgroup 231 le_audio_base_parser_subgroup_next(&parser); 232 } 233 } 234 235 static void start_scanning() { 236 app_state = APP_W4_BROADCAST_SOURCE_AND_SCAN_DELEGATOR_ADV; 237 have_base = false; 238 have_big_info = false; 239 gap_set_scan_params(1, 0x30, 0x30, 0); 240 gap_start_scan(); 241 printf("Start scan..\n"); 242 } 243 244 static void have_base_and_big_info(void){ 245 printf("Connecting to Scan Delegator/Sink!\n"); 246 247 // stop scanning 248 gap_stop_scan(); 249 250 // todo: connect to scan delegator 251 app_state = APP_W4_SCAN_DELEGATOR_CONNECTION; 252 gap_connect(scan_delegator, scan_delegator_type); 253 } 254 255 static void handle_big_info(const uint8_t * packet, uint16_t size){ 256 printf("BIG Info advertising report\n"); 257 sync_handle = hci_subevent_le_biginfo_advertising_report_get_sync_handle(packet); 258 encryption = hci_subevent_le_biginfo_advertising_report_get_encryption(packet); 259 if (encryption) { 260 printf("Stream is encrypted\n"); 261 } 262 have_big_info = true; 263 } 264 265 static void add_source() {// setup bass source info 266 printf("BASS Client: add source with BIS Sync 0x%04x\n", bass_source_data.subgroups[0].bis_sync_state); 267 bass_source_data.address_type = broadcast_sources[broadcast_source_current].addr_type; 268 memcpy(bass_source_data.address, broadcast_sources[broadcast_source_current].addr, 6); 269 bass_source_data.adv_sid = broadcast_sources[broadcast_source_current].sid; 270 bass_source_data.broadcast_id = broadcast_sources[broadcast_source_current].broadcast_id; 271 bass_source_data.pa_sync = LE_AUDIO_PA_SYNC_SYNCHRONIZE_TO_PA_PAST_AVAILABLE; 272 bass_source_data.pa_interval = broadcast_sources[broadcast_source_current].pa_interval; 273 // bass_source_new.subgroups_num set in BASE parser 274 // bass_source_new.subgroup[i].* set in BASE parser 275 276 // add bass source 277 broadcast_audio_scan_service_client_add_source(bass_cid, &bass_source_data); 278 } 279 280 static void bass_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 281 UNUSED(channel); 282 UNUSED(size); 283 284 if (packet_type != HCI_EVENT_PACKET) return; 285 if (hci_event_packet_get_type(packet) != HCI_EVENT_GATTSERVICE_META) return; 286 287 const bass_source_data_t * source_data; 288 289 switch (hci_event_gattservice_meta_get_subevent_code(packet)) { 290 case GATTSERVICE_SUBEVENT_BASS_CLIENT_CONNECTED: 291 if (gattservice_subevent_bass_client_connected_get_status(packet) != ERROR_CODE_SUCCESS){ 292 printf("BASS client connection failed, cid 0x%02x, con_handle 0x%02x, status 0x%02x\n", 293 bass_cid, scan_delegator_handle, 294 gattservice_subevent_bass_client_connected_get_status(packet)); 295 return; 296 } 297 printf("BASS client connected, cid 0x%02x\n", bass_cid); 298 299 if ((have_big_info == false) || (have_base == false)) break; 300 if (manual_mode) return; 301 302 bass_source_data.subgroups[0].bis_sync_state = bis_sync_mask; 303 bass_source_data.subgroups[0].bis_sync = bis_sync_mask; 304 add_source(); 305 break; 306 case GATTSERVICE_SUBEVENT_BASS_CLIENT_SOURCE_OPERATION_COMPLETE: 307 if (gattservice_subevent_bass_client_source_operation_complete_get_status(packet) != ERROR_CODE_SUCCESS){ 308 printf("BASS client source operation failed, status 0x%02x\n", gattservice_subevent_bass_client_source_operation_complete_get_status(packet)); 309 return; 310 } 311 312 if ( gattservice_subevent_bass_client_source_operation_complete_get_opcode(packet) == (uint8_t)BASS_OPCODE_ADD_SOURCE ){ 313 // TODO: set state to 'wait for source_id" 314 printf("BASS client add source operation completed, wait for source_id\n"); 315 } 316 break; 317 case GATTSERVICE_SUBEVENT_BASS_CLIENT_NOTIFICATION_COMPLETE: 318 // store source_id 319 bass_source_id = gattservice_subevent_bass_client_notification_complete_get_source_id(packet); 320 printf("BASS client notification, source_id = 0x%02x\n", bass_source_id); 321 source_data = broadcast_audio_scan_service_client_get_source_data(bass_cid, bass_source_id); 322 btstack_assert(source_data != NULL); 323 324 switch (source_data->pa_sync_state){ 325 case LE_AUDIO_PA_SYNC_STATE_SYNCINFO_REQUEST: 326 // start pa sync transfer 327 printf("LE_AUDIO_PA_SYNC_STATE_SYNCINFO_REQUEST -> Start PAST\n"); 328 // TODO: unclear why this needs to be shifted for PAST with TS to get test green 329 uint16_t service_data = bass_source_id << 8; 330 gap_periodic_advertising_sync_transfer_send(scan_delegator_handle, service_data, sync_handle); 331 break; 332 default: 333 break; 334 } 335 336 // check if Broadcast Code is requested 337 if (manual_mode == false){ 338 le_audio_big_encryption_t big_encryption; 339 uint8_t bad_code[16]; 340 broadcast_audio_scan_service_client_get_encryption_state(bass_cid, bass_source_id, &big_encryption, bad_code); 341 if (big_encryption == LE_AUDIO_BIG_ENCRYPTION_BROADCAST_CODE_REQUIRED){ 342 printf("LE_AUDIO_BIG_ENCRYPTION_BROADCAST_CODE_REQUIRED -> send Broadcast Code\n"); 343 broadcast_audio_scan_service_client_set_broadcast_code(bass_cid, bass_source_id, broadcast_code); 344 } 345 } 346 break; 347 default: 348 break; 349 } 350 } 351 352 static void le_audio_broadcast_assistant_start_periodic_sync() { 353 printf("Start Periodic Advertising Sync\n"); 354 355 // ignore other advertisements 356 gap_set_scan_params(1, 0x30, 0x30, 1); 357 // sync to PA 358 gap_periodic_advertiser_list_clear(); 359 gap_periodic_advertiser_list_add(broadcast_sources[broadcast_source_current].addr_type, broadcast_sources[broadcast_source_current].addr, broadcast_sources[broadcast_source_current].sid); 360 app_state = APP_W4_PA_AND_BIG_INFO; 361 gap_periodic_advertising_create_sync(0x01, broadcast_sources[broadcast_source_current].sid, broadcast_sources[broadcast_source_current].addr_type, broadcast_sources[broadcast_source_current].addr, 0, 1000, 0); 362 } 363 364 static void 365 le_audio_broadcast_assistant_found_scan_delegator(bd_addr_type_t *addr_type, const uint8_t *addr, 366 const char *adv_name) { 367 memcpy(scan_delegator, addr, 6); 368 scan_delegator_type = (*addr_type); 369 btstack_strcpy(scan_delegator_name, sizeof(scan_delegator_name), (const char *) adv_name); 370 printf("Broadcast sink found, addr %s, name: '%s'\n", bd_addr_to_str(scan_delegator), scan_delegator_name); 371 gap_whitelist_add(scan_delegator_type, scan_delegator); 372 } 373 374 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 375 UNUSED(channel); 376 if (packet_type != HCI_EVENT_PACKET) return; 377 switch (packet[0]) { 378 case BTSTACK_EVENT_STATE: 379 switch(btstack_event_state_get_state(packet)) { 380 case HCI_STATE_WORKING: 381 app_state = APP_IDLE; 382 #ifdef ENABLE_DEMO_MODE 383 start_scanning(); 384 #else 385 show_usage(); 386 #endif 387 break; 388 case HCI_STATE_OFF: 389 printf("Goodbye\n"); 390 exit(0); 391 break; 392 default: 393 break; 394 } 395 break; 396 case GAP_EVENT_EXTENDED_ADVERTISING_REPORT: 397 { 398 if (app_state != APP_W4_BROADCAST_SOURCE_AND_SCAN_DELEGATOR_ADV) break; 399 400 uint8_t adv_size = gap_event_extended_advertising_report_get_data_length(packet); 401 const uint8_t * adv_data = gap_event_extended_advertising_report_get_data(packet); 402 403 ad_context_t context; 404 bool found_scan_delegator = false; 405 bool found_broadcast_source = false; 406 char adv_name[31]; 407 adv_name[0] = 0; 408 409 uint16_t uuid; 410 for (ad_iterator_init(&context, adv_size, adv_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 411 uint8_t data_type = ad_iterator_get_data_type(&context); 412 uint8_t size = ad_iterator_get_data_len(&context); 413 const uint8_t *data = ad_iterator_get_data(&context); 414 switch (data_type){ 415 case BLUETOOTH_DATA_TYPE_SERVICE_DATA_16_BIT_UUID: 416 uuid = little_endian_read_16(data, 0); 417 switch (uuid){ 418 case ORG_BLUETOOTH_SERVICE_BROADCAST_AUDIO_ANNOUNCEMENT_SERVICE: 419 broadcast_sources[broadcast_source_current].broadcast_id = little_endian_read_24(data, 2); 420 found_broadcast_source = true; 421 break; 422 case ORG_BLUETOOTH_SERVICE_BROADCAST_AUDIO_SCAN_SERVICE: 423 found_scan_delegator = true; 424 break; 425 default: 426 break; 427 } 428 break; 429 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 430 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 431 size = btstack_min(sizeof(adv_name) - 1, size); 432 memcpy(adv_name, data, size); 433 adv_name[size] = 0; 434 break; 435 default: 436 break; 437 } 438 } 439 440 if ((found_scan_delegator == false) && (found_broadcast_source == false)) break; 441 442 if ((have_scan_delegator == false) && found_scan_delegator){ 443 have_scan_delegator = true; 444 bd_addr_t addr; 445 gap_event_extended_advertising_report_get_address(packet, addr); 446 bd_addr_type_t addr_type = (bd_addr_type_t) gap_event_extended_advertising_report_get_address_type(packet); 447 le_audio_broadcast_assistant_found_scan_delegator(&addr_type, addr, adv_name); 448 } 449 450 if ((have_broadcast_source == false) && found_broadcast_source){ 451 have_broadcast_source = true; 452 gap_event_extended_advertising_report_get_address(packet, broadcast_sources[broadcast_source_current].addr); 453 broadcast_sources[broadcast_source_current].addr_type = gap_event_extended_advertising_report_get_address_type(packet); 454 broadcast_sources[broadcast_source_current].sid = gap_event_extended_advertising_report_get_advertising_sid(packet); 455 btstack_strcpy(broadcast_sources[broadcast_source_current].name, BROADCAST_SOURCE_NAME_LEN, (const char *) adv_name); 456 printf("Broadcast source found, addr %s, name: '%s'\n", bd_addr_to_str(broadcast_sources[broadcast_source_current].addr), broadcast_sources[broadcast_source_current].name); 457 gap_whitelist_add(broadcast_sources[broadcast_source_current].addr_type, broadcast_sources[broadcast_source_current].addr); 458 } 459 460 if ((have_broadcast_source && have_scan_delegator) == false) break; 461 462 le_audio_broadcast_assistant_start_periodic_sync(); 463 break; 464 } 465 466 case HCI_EVENT_LE_META: 467 switch(hci_event_le_meta_get_subevent_code(packet)) { 468 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_SYNC_ESTABLISHMENT: 469 sync_handle = hci_subevent_le_periodic_advertising_sync_establishment_get_sync_handle(packet); 470 broadcast_sources[broadcast_source_current].pa_interval = hci_subevent_le_periodic_advertising_sync_establishment_get_periodic_advertising_interval(packet); 471 printf("Periodic advertising sync with handle 0x%04x established\n", sync_handle); 472 break; 473 case HCI_SUBEVENT_LE_PERIODIC_ADVERTISING_REPORT: 474 if (have_base) break; 475 handle_periodic_advertisement(packet, size); 476 if (have_base & have_big_info){ 477 have_base_and_big_info(); 478 } 479 break; 480 case HCI_SUBEVENT_LE_BIGINFO_ADVERTISING_REPORT: 481 if (have_big_info) break; 482 handle_big_info(packet, size); 483 if (have_base & have_big_info){ 484 have_base_and_big_info(); 485 } 486 break; 487 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 488 printf("BIG Sync Lost\n"); 489 { 490 const btstack_audio_sink_t * sink = btstack_audio_sink_get_instance(); 491 if (sink != NULL) { 492 sink->stop_stream(); 493 sink->close(); 494 } 495 } 496 // start over 497 start_scanning(); 498 break; 499 default: 500 break; 501 } 502 break; 503 case HCI_EVENT_META_GAP: 504 switch (hci_event_gap_meta_get_subevent_code(packet)){ 505 case GAP_SUBEVENT_LE_CONNECTION_COMPLETE: 506 if (gap_subevent_le_connection_complete_get_status(packet) != ERROR_CODE_SUCCESS) break; 507 scan_delegator_handle = gap_subevent_le_connection_complete_get_connection_handle(packet); 508 printf("Connection complete, handle 0x%04x\n", scan_delegator_handle); 509 broadcast_audio_scan_service_client_connect(&bass_connection, 510 bass_sources, 511 BASS_CLIENT_NUM_SOURCES, 512 scan_delegator_handle, 513 &bass_cid); 514 break; 515 default: 516 break; 517 } 518 break; 519 case SM_EVENT_JUST_WORKS_REQUEST: 520 printf("Just Works requested\n"); 521 sm_just_works_confirm(sm_event_just_works_request_get_handle(packet)); 522 break; 523 default: 524 break; 525 } 526 } 527 528 static void show_usage(void){ 529 printf("\n--- LE Audio Broadcast Assistant Test Console ---\n"); 530 printf("s - setup LE Broadcast Sink with Broadcast Source via Scan Delegator\n"); 531 printf("c - scan and connect to Scan Delegator\n"); 532 printf("d - scan for Broadcast sources\n"); 533 printf("a - add source with BIS Sync 0x%08x\n", bis_sync_mask); 534 printf("A - add source with BIS Sync 0x00000000 (do not sync)\n"); 535 printf("m - modify source to PA Sync = 0, bis sync = 0x00000000\n"); 536 printf("b - send Broadcast Code: "); 537 printf_hexdump(broadcast_code, sizeof(broadcast_code)); 538 printf("r - remove source\n"); 539 printf("---\n"); 540 } 541 542 static void stdin_process(char c){ 543 switch (c){ 544 case 's': 545 if (app_state != APP_IDLE) break; 546 manual_mode = false; 547 start_scanning(); 548 break; 549 case 'c': 550 manual_mode = true; 551 start_scanning(); 552 break; 553 case 'a': 554 bass_source_data.subgroups[0].bis_sync_state = bis_sync_mask; 555 bass_source_data.subgroups[0].bis_sync = bis_sync_mask; 556 add_source(); 557 break; 558 case 'A': 559 bass_source_data.subgroups[0].bis_sync_state = 0; 560 bass_source_data.subgroups[0].bis_sync = 0; 561 add_source(); 562 break; 563 case 'm': 564 bass_source_data.pa_sync = LE_AUDIO_PA_SYNC_DO_NOT_SYNCHRONIZE_TO_PA; 565 bass_source_data.subgroups[0].bis_sync_state = 0; 566 broadcast_audio_scan_service_client_modify_source(bass_cid, bass_source_id, &bass_source_data); 567 break; 568 case 'r': 569 broadcast_audio_scan_service_client_remove_source(bass_cid, bass_source_id); 570 break; 571 case 'b': 572 broadcast_audio_scan_service_client_set_broadcast_code(bass_cid, bass_source_id, broadcast_code); 573 break; 574 case '\n': 575 case '\r': 576 break; 577 default: 578 show_usage(); 579 break; 580 581 } 582 } 583 584 int btstack_main(int argc, const char * argv[]); 585 int btstack_main(int argc, const char * argv[]){ 586 (void) argv; 587 (void) argc; 588 589 l2cap_init(); 590 sm_init(); 591 gatt_client_init(); 592 593 // register for HCI events 594 hci_event_callback_registration.callback = &packet_handler; 595 hci_add_event_handler(&hci_event_callback_registration); 596 597 // register for SM events 598 sm_event_callback_registration.callback = &packet_handler; 599 sm_add_event_handler(&sm_event_callback_registration); 600 601 broadcast_audio_scan_service_client_init(&bass_packet_handler); 602 603 // turn on! 604 hci_power_control(HCI_POWER_ON); 605 606 btstack_stdin_setup(stdin_process); 607 return 0; 608 } 609