1 /* 2 * Copyright (C) 2016 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__ "avrcp.c" 39 40 #include <stdint.h> 41 #include <string.h> 42 // snprintf 43 #include <stdio.h> 44 45 #include "bluetooth_psm.h" 46 #include "bluetooth_sdp.h" 47 #include "btstack_debug.h" 48 #include "btstack_event.h" 49 #include "btstack_memory.h" 50 #include "classic/sdp_client.h" 51 #include "classic/sdp_util.h" 52 #include "classic/avrcp.h" 53 54 55 typedef struct { 56 uint8_t parse_sdp_record; 57 uint32_t record_id; 58 uint16_t avrcp_cid; 59 uint16_t avrcp_l2cap_psm; 60 uint16_t avrcp_version; 61 62 uint16_t browsing_l2cap_psm; 63 uint16_t browsing_version; 64 } avrcp_sdp_query_context_t; 65 66 67 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 68 69 static const char * default_avrcp_controller_service_name = "BTstack AVRCP Controller Service"; 70 static const char * default_avrcp_controller_service_provider_name = "BTstack AVRCP Controller Service Provider"; 71 static const char * default_avrcp_target_service_name = "BTstack AVRCP Target Service"; 72 static const char * default_avrcp_target_service_provider_name = "BTstack AVRCP Target Service Provider"; 73 74 static uint16_t avrcp_cid_counter; 75 76 static btstack_context_callback_registration_t avrcp_handle_sdp_client_query_request; 77 78 static avrcp_sdp_query_context_t sdp_query_context; 79 80 static btstack_packet_handler_t avrcp_callback; 81 82 static uint8_t attribute_value[45]; 83 static const unsigned int attribute_value_buffer_size = sizeof(attribute_value); 84 85 static btstack_linked_list_t connections; 86 static btstack_packet_handler_t avrcp_controller_packet_handler; 87 static btstack_packet_handler_t avrcp_target_packet_handler; 88 static bool l2cap_service_registered = false; 89 90 static const char * avrcp_subunit_type_name[] = { 91 "MONITOR", "AUDIO", "PRINTER", "DISC", "TAPE_RECORDER_PLAYER", "TUNER", 92 "CA", "CAMERA", "RESERVED", "PANEL", "BULLETIN_BOARD", "CAMERA_STORAGE", 93 "VENDOR_UNIQUE", "RESERVED_FOR_ALL_SUBUNIT_TYPES", 94 "EXTENDED_TO_NEXT_BYTE", "UNIT", "ERROR" 95 }; 96 97 const char * avrcp_subunit2str(uint16_t index){ 98 if (index <= 11) return avrcp_subunit_type_name[index]; 99 if ((index >= 0x1C) && (index <= 0x1F)) return avrcp_subunit_type_name[index - 0x10]; 100 return avrcp_subunit_type_name[16]; 101 } 102 103 static const char * avrcp_event_name[] = { 104 "ERROR", "PLAYBACK_STATUS_CHANGED", 105 "TRACK_CHANGED", "TRACK_REACHED_END", "TRACK_REACHED_START", 106 "PLAYBACK_POS_CHANGED", "BATT_STATUS_CHANGED", "SYSTEM_STATUS_CHANGED", 107 "PLAYER_APPLICATION_SETTING_CHANGED", "NOW_PLAYING_CONTENT_CHANGED", 108 "AVAILABLE_PLAYERS_CHANGED", "ADDRESSED_PLAYER_CHANGED", "UIDS_CHANGED", "VOLUME_CHANGED" 109 }; 110 const char * avrcp_event2str(uint16_t index){ 111 if (index <= 0x0d) return avrcp_event_name[index]; 112 return avrcp_event_name[0]; 113 } 114 115 static const char * avrcp_operation_name[] = { 116 "SKIP", NULL, NULL, NULL, NULL, 117 "VOLUME_UP", "VOLUME_DOWN", "MUTE", "PLAY", "STOP", "PAUSE", NULL, 118 "REWIND", "FAST_FORWARD", NULL, "FORWARD", "BACKWARD" // 0x4C 119 }; 120 121 const char * avrcp_operation2str(uint8_t operation_id){ 122 char * name = NULL; 123 if ((operation_id >= AVRCP_OPERATION_ID_SKIP) && (operation_id <= AVRCP_OPERATION_ID_BACKWARD)){ 124 name = (char *)avrcp_operation_name[operation_id - AVRCP_OPERATION_ID_SKIP]; 125 } 126 if (name == NULL){ 127 static char buffer[13]; 128 snprintf(buffer, sizeof(buffer), "Unknown 0x%02x", operation_id); 129 buffer[sizeof(buffer)-1] = 0; 130 return buffer; 131 } else { 132 return name; 133 } 134 } 135 136 static const char * avrcp_media_attribute_id_name[] = { 137 "NONE", "TITLE", "ARTIST", "ALBUM", "TRACK", "TOTAL TRACKS", "GENRE", "SONG LENGTH" 138 }; 139 const char * avrcp_attribute2str(uint8_t index){ 140 if ((index >= 1) && (index <= 7)) return avrcp_media_attribute_id_name[index]; 141 return avrcp_media_attribute_id_name[0]; 142 } 143 144 static const char * avrcp_play_status_name[] = { 145 "STOPPED", "PLAYING", "PAUSED", "FORWARD SEEK", "REVERSE SEEK", 146 "ERROR" // 0xFF 147 }; 148 const char * avrcp_play_status2str(uint8_t index){ 149 if ((index >= 1) && (index <= 4)) return avrcp_play_status_name[index]; 150 return avrcp_play_status_name[5]; 151 } 152 153 static const char * avrcp_ctype_name[] = { 154 "CONTROL", 155 "STATUS", 156 "SPECIFIC_INQUIRY", 157 "NOTIFY", 158 "GENERAL_INQUIRY", 159 "RESERVED5", 160 "RESERVED6", 161 "RESERVED7", 162 "NOT IMPLEMENTED IN REMOTE", 163 "ACCEPTED BY REMOTE", 164 "REJECTED BY REMOTE", 165 "IN_TRANSITION", 166 "IMPLEMENTED_STABLE", 167 "CHANGED_STABLE", 168 "RESERVED", 169 "INTERIM" 170 }; 171 const char * avrcp_ctype2str(uint8_t index){ 172 if (index < sizeof(avrcp_ctype_name)){ 173 return avrcp_ctype_name[index]; 174 } 175 return "NONE"; 176 } 177 178 static const char * avrcp_shuffle_mode_name[] = { 179 "SHUFFLE OFF", 180 "SHUFFLE ALL TRACKS", 181 "SHUFFLE GROUP" 182 }; 183 184 const char * avrcp_shuffle2str(uint8_t index){ 185 if ((index >= 1) && (index <= 3)) return avrcp_shuffle_mode_name[index-1]; 186 return "NONE"; 187 } 188 189 static const char * avrcp_repeat_mode_name[] = { 190 "REPEAT OFF", 191 "REPEAT SINGLE TRACK", 192 "REPEAT ALL TRACKS", 193 "REPEAT GROUP" 194 }; 195 196 const char * avrcp_repeat2str(uint8_t index){ 197 if ((index >= 1) && (index <= 4)) return avrcp_repeat_mode_name[index-1]; 198 return "NONE"; 199 } 200 201 btstack_linked_list_t avrcp_get_connections(void){ 202 return connections; 203 } 204 205 uint8_t avrcp_cmd_opcode(uint8_t *packet, uint16_t size){ 206 uint8_t cmd_opcode_index = 5; 207 if (cmd_opcode_index > size) return AVRCP_CMD_OPCODE_UNDEFINED; 208 return packet[cmd_opcode_index]; 209 } 210 211 void avrcp_create_sdp_record(uint8_t controller, uint8_t * service, uint32_t service_record_handle, uint8_t browsing, uint16_t supported_features, 212 const char * service_name, const char * service_provider_name){ 213 uint8_t* attribute; 214 de_create_sequence(service); 215 216 // 0x0000 "Service Record Handle" 217 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 218 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 219 220 // 0x0001 "Service Class ID List" 221 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 222 attribute = de_push_sequence(service); 223 { 224 if (controller){ 225 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL); 226 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_CONTROLLER); 227 } else { 228 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_TARGET); 229 } 230 } 231 de_pop_sequence(service, attribute); 232 233 // 0x0004 "Protocol Descriptor List" 234 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 235 attribute = de_push_sequence(service); 236 { 237 uint8_t* l2cpProtocol = de_push_sequence(attribute); 238 { 239 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 240 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVCTP); 241 } 242 de_pop_sequence(attribute, l2cpProtocol); 243 244 uint8_t* avctpProtocol = de_push_sequence(attribute); 245 { 246 de_add_number(avctpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVCTP); // avctpProtocol_service 247 de_add_number(avctpProtocol, DE_UINT, DE_SIZE_16, 0x0104); // version 248 } 249 de_pop_sequence(attribute, avctpProtocol); 250 } 251 de_pop_sequence(service, attribute); 252 253 // 0x0005 "Public Browse Group" 254 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 255 attribute = de_push_sequence(service); 256 { 257 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 258 } 259 de_pop_sequence(service, attribute); 260 261 // 0x0009 "Bluetooth Profile Descriptor List" 262 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 263 attribute = de_push_sequence(service); 264 { 265 uint8_t *avrcProfile = de_push_sequence(attribute); 266 { 267 de_add_number(avrcProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL); 268 de_add_number(avrcProfile, DE_UINT, DE_SIZE_16, 0x0106); 269 } 270 de_pop_sequence(attribute, avrcProfile); 271 } 272 de_pop_sequence(service, attribute); 273 274 // 0x000d "Additional Bluetooth Profile Descriptor List" 275 if (browsing){ 276 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS); 277 attribute = de_push_sequence(service); 278 { 279 uint8_t * des = de_push_sequence(attribute); 280 { 281 uint8_t* browsing_l2cpProtocol = de_push_sequence(des); 282 { 283 de_add_number(browsing_l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 284 de_add_number(browsing_l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVCTP_BROWSING); 285 } 286 de_pop_sequence(des, browsing_l2cpProtocol); 287 288 uint8_t* browsing_avctpProtocol = de_push_sequence(des); 289 { 290 de_add_number(browsing_avctpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVCTP); // browsing_avctpProtocol_service 291 de_add_number(browsing_avctpProtocol, DE_UINT, DE_SIZE_16, 0x0104); // version 292 } 293 de_pop_sequence(des, browsing_avctpProtocol); 294 } 295 de_pop_sequence(attribute, des); 296 } 297 de_pop_sequence(service, attribute); 298 } 299 300 301 // 0x0100 "Service Name" 302 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 303 if (service_name){ 304 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 305 } else { 306 if (controller){ 307 de_add_data(service, DE_STRING, strlen(default_avrcp_controller_service_name), (uint8_t *) default_avrcp_controller_service_name); 308 } else { 309 de_add_data(service, DE_STRING, strlen(default_avrcp_target_service_name), (uint8_t *) default_avrcp_target_service_name); 310 } 311 } 312 313 // 0x0100 "Provider Name" 314 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 315 if (service_provider_name){ 316 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 317 } else { 318 if (controller){ 319 de_add_data(service, DE_STRING, strlen(default_avrcp_controller_service_provider_name), (uint8_t *) default_avrcp_controller_service_provider_name); 320 } else { 321 de_add_data(service, DE_STRING, strlen(default_avrcp_target_service_provider_name), (uint8_t *) default_avrcp_target_service_provider_name); 322 } 323 } 324 325 // 0x0311 "Supported Features" 326 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 327 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 328 } 329 330 avrcp_connection_t * avrcp_get_connection_for_bd_addr_for_role(avrcp_role_t role, bd_addr_t addr){ 331 btstack_linked_list_iterator_t it; 332 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &connections); 333 while (btstack_linked_list_iterator_has_next(&it)){ 334 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 335 if (connection->role != role) continue; 336 if (memcmp(addr, connection->remote_addr, 6) != 0) continue; 337 return connection; 338 } 339 return NULL; 340 } 341 342 avrcp_connection_t * avrcp_get_connection_for_l2cap_signaling_cid_for_role(avrcp_role_t role, uint16_t l2cap_cid){ 343 btstack_linked_list_iterator_t it; 344 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &connections); 345 while (btstack_linked_list_iterator_has_next(&it)){ 346 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 347 if (connection->role != role) continue; 348 if (connection->l2cap_signaling_cid != l2cap_cid) continue; 349 return connection; 350 } 351 return NULL; 352 } 353 354 avrcp_connection_t * avrcp_get_connection_for_avrcp_cid_for_role(avrcp_role_t role, uint16_t avrcp_cid){ 355 btstack_linked_list_iterator_t it; 356 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &connections); 357 while (btstack_linked_list_iterator_has_next(&it)){ 358 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 359 if (connection->role != role) continue; 360 if (connection->avrcp_cid != avrcp_cid) continue; 361 return connection; 362 } 363 return NULL; 364 } 365 366 avrcp_connection_t * avrcp_get_connection_for_browsing_cid_for_role(avrcp_role_t role, uint16_t browsing_cid){ 367 btstack_linked_list_iterator_t it; 368 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &connections); 369 while (btstack_linked_list_iterator_has_next(&it)){ 370 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 371 if (connection->role != role) continue; 372 if (connection->avrcp_browsing_cid != browsing_cid) continue; 373 return connection; 374 } 375 return NULL; 376 } 377 378 avrcp_connection_t * avrcp_get_connection_for_browsing_l2cap_cid_for_role(avrcp_role_t role, uint16_t browsing_l2cap_cid){ 379 btstack_linked_list_iterator_t it; 380 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &connections); 381 while (btstack_linked_list_iterator_has_next(&it)){ 382 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 383 if (connection->role != role) continue; 384 if (connection->browsing_connection && (connection->browsing_connection->l2cap_browsing_cid != browsing_l2cap_cid)) continue; 385 return connection; 386 } 387 return NULL; 388 } 389 390 avrcp_browsing_connection_t * avrcp_get_browsing_connection_for_l2cap_cid_for_role(avrcp_role_t role, uint16_t l2cap_cid){ 391 btstack_linked_list_iterator_t it; 392 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &connections); 393 while (btstack_linked_list_iterator_has_next(&it)){ 394 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 395 if (connection->role != role) continue; 396 if (connection->browsing_connection && (connection->browsing_connection->l2cap_browsing_cid != l2cap_cid)) continue; 397 return connection->browsing_connection; 398 } 399 return NULL; 400 } 401 402 void avrcp_request_can_send_now(avrcp_connection_t * connection, uint16_t l2cap_cid){ 403 connection->wait_to_send = true; 404 l2cap_request_can_send_now_event(l2cap_cid); 405 } 406 407 uint16_t avrcp_get_next_cid(avrcp_role_t role){ 408 do { 409 if (avrcp_cid_counter == 0xffff) { 410 avrcp_cid_counter = 1; 411 } else { 412 avrcp_cid_counter++; 413 } 414 } while (avrcp_get_connection_for_avrcp_cid_for_role(role, avrcp_cid_counter) != NULL) ; 415 return avrcp_cid_counter; 416 } 417 418 419 static avrcp_connection_t * avrcp_create_connection(avrcp_role_t role, bd_addr_t remote_addr){ 420 avrcp_connection_t * connection = btstack_memory_avrcp_connection_get(); 421 if (!connection){ 422 log_error("Not enough memory to create connection for role %d", role); 423 return NULL; 424 } 425 426 connection->state = AVCTP_CONNECTION_IDLE; 427 connection->role = role; 428 429 connection->transaction_id = 0xFF; 430 connection->transaction_id_counter = 0; 431 432 connection->max_num_fragments = 0xFF; 433 log_info("avrcp_create_connection, role %d", role); 434 (void)memcpy(connection->remote_addr, remote_addr, 6); 435 btstack_linked_list_add(&connections, (btstack_linked_item_t *) connection); 436 return connection; 437 } 438 439 static void avrcp_finalize_connection(avrcp_connection_t * connection){ 440 btstack_run_loop_remove_timer(&connection->retry_timer); 441 btstack_linked_list_remove(&connections, (btstack_linked_item_t*) connection); 442 btstack_memory_avrcp_connection_free(connection); 443 } 444 445 static void avrcp_emit_connection_established(uint16_t avrcp_cid, bd_addr_t addr, hci_con_handle_t con_handle, uint8_t status){ 446 btstack_assert(avrcp_callback != NULL); 447 448 uint8_t event[14]; 449 int pos = 0; 450 event[pos++] = HCI_EVENT_AVRCP_META; 451 event[pos++] = sizeof(event) - 2; 452 event[pos++] = AVRCP_SUBEVENT_CONNECTION_ESTABLISHED; 453 event[pos++] = status; 454 little_endian_store_16(event, pos, avrcp_cid); 455 pos += 2; 456 reverse_bd_addr(addr,&event[pos]); 457 pos += 6; 458 little_endian_store_16(event, pos, con_handle); 459 pos += 2; 460 (*avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 461 } 462 463 static void avrcp_emit_connection_closed(uint16_t avrcp_cid){ 464 btstack_assert(avrcp_callback != NULL); 465 466 uint8_t event[5]; 467 int pos = 0; 468 event[pos++] = HCI_EVENT_AVRCP_META; 469 event[pos++] = sizeof(event) - 2; 470 event[pos++] = AVRCP_SUBEVENT_CONNECTION_RELEASED; 471 little_endian_store_16(event, pos, avrcp_cid); 472 pos += 2; 473 (*avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 474 } 475 476 uint16_t avrcp_sdp_query_browsing_l2cap_psm(void){ 477 return sdp_query_context.browsing_l2cap_psm; 478 } 479 480 void avrcp_handle_sdp_client_query_attribute_value(uint8_t *packet){ 481 des_iterator_t des_list_it; 482 des_iterator_t prot_it; 483 484 // Handle new SDP record 485 if (sdp_event_query_attribute_byte_get_record_id(packet) != sdp_query_context.record_id) { 486 sdp_query_context.record_id = sdp_event_query_attribute_byte_get_record_id(packet); 487 sdp_query_context.parse_sdp_record = 0; 488 // log_info("SDP Record: Nr: %d", record_id); 489 } 490 491 if (sdp_event_query_attribute_byte_get_attribute_length(packet) <= attribute_value_buffer_size) { 492 attribute_value[sdp_event_query_attribute_byte_get_data_offset(packet)] = sdp_event_query_attribute_byte_get_data(packet); 493 494 if ((uint16_t)(sdp_event_query_attribute_byte_get_data_offset(packet)+1) == sdp_event_query_attribute_byte_get_attribute_length(packet)) { 495 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)) { 496 case BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST: 497 if (de_get_element_type(attribute_value) != DE_DES) break; 498 for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 499 uint8_t * element = des_iterator_get_element(&des_list_it); 500 if (de_get_element_type(element) != DE_UUID) continue; 501 uint32_t uuid = de_get_uuid32(element); 502 switch (uuid){ 503 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_TARGET: 504 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL: 505 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_CONTROLLER: 506 sdp_query_context.parse_sdp_record = 1; 507 break; 508 default: 509 break; 510 } 511 } 512 break; 513 514 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: { 515 if (!sdp_query_context.parse_sdp_record) break; 516 // log_info("SDP Attribute: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet)); 517 for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 518 uint8_t *des_element; 519 uint8_t *element; 520 uint32_t uuid; 521 522 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 523 524 des_element = des_iterator_get_element(&des_list_it); 525 des_iterator_init(&prot_it, des_element); 526 element = des_iterator_get_element(&prot_it); 527 528 if (de_get_element_type(element) != DE_UUID) continue; 529 530 uuid = de_get_uuid32(element); 531 des_iterator_next(&prot_it); 532 switch (uuid){ 533 case BLUETOOTH_PROTOCOL_L2CAP: 534 if (!des_iterator_has_more(&prot_it)) continue; 535 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context.avrcp_l2cap_psm); 536 break; 537 case BLUETOOTH_PROTOCOL_AVCTP: 538 if (!des_iterator_has_more(&prot_it)) continue; 539 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context.avrcp_version); 540 break; 541 default: 542 break; 543 } 544 } 545 } 546 break; 547 case BLUETOOTH_ATTRIBUTE_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS: { 548 // log_info("SDP Attribute: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet)); 549 if (!sdp_query_context.parse_sdp_record) break; 550 if (de_get_element_type(attribute_value) != DE_DES) break; 551 552 des_iterator_t des_list_0_it; 553 uint8_t *element_0; 554 555 des_iterator_init(&des_list_0_it, attribute_value); 556 element_0 = des_iterator_get_element(&des_list_0_it); 557 558 for (des_iterator_init(&des_list_it, element_0); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 559 uint8_t *des_element; 560 uint8_t *element; 561 uint32_t uuid; 562 563 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 564 565 des_element = des_iterator_get_element(&des_list_it); 566 des_iterator_init(&prot_it, des_element); 567 element = des_iterator_get_element(&prot_it); 568 569 if (de_get_element_type(element) != DE_UUID) continue; 570 571 uuid = de_get_uuid32(element); 572 des_iterator_next(&prot_it); 573 switch (uuid){ 574 case BLUETOOTH_PROTOCOL_L2CAP: 575 if (!des_iterator_has_more(&prot_it)) continue; 576 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context.browsing_l2cap_psm); 577 break; 578 case BLUETOOTH_PROTOCOL_AVCTP: 579 if (!des_iterator_has_more(&prot_it)) continue; 580 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context.browsing_version); 581 break; 582 default: 583 break; 584 } 585 } 586 } 587 break; 588 default: 589 break; 590 } 591 } 592 } else { 593 log_error("SDP attribute value buffer size exceeded: available %d, required %d", attribute_value_buffer_size, sdp_event_query_attribute_byte_get_attribute_length(packet)); 594 } 595 } 596 597 static void avrcp_handle_sdp_query_failed(avrcp_connection_t * connection, uint8_t status){ 598 if (connection == NULL) return; 599 log_info("AVRCP: SDP query failed with status 0x%02x.", status); 600 avrcp_emit_connection_established(connection->avrcp_cid, connection->remote_addr, connection->con_handle, status); 601 avrcp_finalize_connection(connection); 602 } 603 604 static void avrcp_handle_sdp_query_succeeded(avrcp_connection_t * connection){ 605 if (connection == NULL) return; 606 connection->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 607 connection->avrcp_l2cap_psm = sdp_query_context.avrcp_l2cap_psm; 608 connection->browsing_version = sdp_query_context.browsing_version; 609 connection->browsing_l2cap_psm = sdp_query_context.browsing_l2cap_psm; 610 } 611 612 static void avrcp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 613 UNUSED(packet_type); 614 UNUSED(channel); 615 UNUSED(size); 616 617 bool state_ok = true; 618 avrcp_connection_t * avrcp_target_connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_TARGET, sdp_query_context.avrcp_cid); 619 if (!avrcp_target_connection || avrcp_target_connection->state != AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE) { 620 state_ok = false; 621 } 622 avrcp_connection_t * avrcp_controller_connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, sdp_query_context.avrcp_cid); 623 if (!avrcp_controller_connection || avrcp_controller_connection->state != AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE) { 624 state_ok = false; 625 } 626 if (!state_ok){ 627 // something wrong, nevertheless, start next sdp query if this one is complete 628 if (hci_event_packet_get_type(packet) == SDP_EVENT_QUERY_COMPLETE){ 629 (void) sdp_client_register_query_callback(&avrcp_handle_sdp_client_query_request); 630 } 631 return; 632 } 633 634 uint8_t status; 635 636 switch (hci_event_packet_get_type(packet)){ 637 case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: 638 avrcp_handle_sdp_client_query_attribute_value(packet); 639 return; 640 641 case SDP_EVENT_QUERY_COMPLETE: 642 status = sdp_event_query_complete_get_status(packet); 643 644 if (status != ERROR_CODE_SUCCESS){ 645 avrcp_handle_sdp_query_failed(avrcp_controller_connection, status); 646 avrcp_handle_sdp_query_failed(avrcp_target_connection, status); 647 break; 648 } 649 650 if (!sdp_query_context.avrcp_l2cap_psm){ 651 avrcp_handle_sdp_query_failed(avrcp_controller_connection, SDP_SERVICE_NOT_FOUND); 652 avrcp_handle_sdp_query_failed(avrcp_target_connection, SDP_SERVICE_NOT_FOUND); 653 break; 654 } 655 656 avrcp_handle_sdp_query_succeeded(avrcp_controller_connection); 657 avrcp_handle_sdp_query_succeeded(avrcp_target_connection); 658 659 l2cap_create_channel(&avrcp_packet_handler, avrcp_target_connection->remote_addr, sdp_query_context.avrcp_l2cap_psm, l2cap_max_mtu(), NULL); 660 break; 661 662 default: 663 return; 664 } 665 666 // register the SDP Query request to check if there is another connection waiting for the query 667 // ignore ERROR_CODE_COMMAND_DISALLOWED because in that case, we already have requested an SDP callback 668 (void) sdp_client_register_query_callback(&avrcp_handle_sdp_client_query_request); 669 } 670 671 672 static avrcp_connection_t * avrcp_handle_incoming_connection_for_role(avrcp_role_t role, avrcp_connection_t * connection, bd_addr_t event_addr, hci_con_handle_t con_handle, uint16_t local_cid, uint16_t avrcp_cid){ 673 if (connection == NULL){ 674 connection = avrcp_create_connection(role, event_addr); 675 } 676 if (connection) { 677 connection->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 678 connection->l2cap_signaling_cid = local_cid; 679 connection->avrcp_cid = avrcp_cid; 680 connection->con_handle = con_handle; 681 btstack_run_loop_remove_timer(&connection->retry_timer); 682 } 683 return connection; 684 } 685 686 static void avrcp_handle_open_connection(avrcp_connection_t * connection, hci_con_handle_t con_handle, uint16_t local_cid, uint16_t l2cap_mtu){ 687 connection->l2cap_signaling_cid = local_cid; 688 connection->l2cap_mtu = l2cap_mtu; 689 connection->con_handle = con_handle; 690 connection->incoming_declined = false; 691 connection->song_length_ms = 0xFFFFFFFF; 692 connection->song_position_ms = 0xFFFFFFFF; 693 connection->playback_status = AVRCP_PLAYBACK_STATUS_ERROR; 694 connection->state = AVCTP_CONNECTION_OPENED; 695 696 log_info("L2CAP_EVENT_CHANNEL_OPENED avrcp_cid 0x%02x, l2cap_signaling_cid 0x%02x, role %d, state %d", connection->avrcp_cid, connection->l2cap_signaling_cid, connection->role, connection->state); 697 } 698 699 static void avrcp_retry_timer_timeout_handler(btstack_timer_source_t * timer){ 700 uint16_t avrcp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 701 avrcp_connection_t * connection_controller = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 702 if (connection_controller == NULL) return; 703 avrcp_connection_t * connection_target = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_TARGET, avrcp_cid); 704 if (connection_target == NULL) return; 705 706 if (connection_controller->state == AVCTP_CONNECTION_W2_L2CAP_RETRY){ 707 connection_controller->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 708 connection_target->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 709 l2cap_create_channel(&avrcp_packet_handler, connection_controller->remote_addr, connection_controller->avrcp_l2cap_psm, l2cap_max_mtu(), NULL); 710 } 711 } 712 713 static void avrcp_retry_timer_start(avrcp_connection_t * connection){ 714 btstack_run_loop_set_timer_handler(&connection->retry_timer, avrcp_retry_timer_timeout_handler); 715 btstack_run_loop_set_timer_context(&connection->retry_timer, (void *)(uintptr_t)connection->avrcp_cid); 716 717 // add some jitter/randomness to reconnect delay 718 uint32_t timeout = 100 + (btstack_run_loop_get_time_ms() & 0x7F); 719 btstack_run_loop_set_timer(&connection->retry_timer, timeout); 720 721 btstack_run_loop_add_timer(&connection->retry_timer); 722 } 723 724 static avrcp_frame_type_t avrcp_get_frame_type(uint8_t header){ 725 return (avrcp_frame_type_t)((header & 0x02) >> 1); 726 } 727 728 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 729 UNUSED(channel); 730 UNUSED(size); 731 bd_addr_t event_addr; 732 uint16_t local_cid; 733 uint16_t l2cap_mtu; 734 uint8_t status; 735 bool decline_connection; 736 bool outoing_active; 737 hci_con_handle_t con_handle; 738 739 avrcp_connection_t * connection_controller; 740 avrcp_connection_t * connection_target; 741 bool can_send; 742 743 switch (packet_type) { 744 case HCI_EVENT_PACKET: 745 switch (hci_event_packet_get_type(packet)) { 746 747 case L2CAP_EVENT_INCOMING_CONNECTION: 748 btstack_assert(avrcp_controller_packet_handler != NULL); 749 btstack_assert(avrcp_target_packet_handler != NULL); 750 751 l2cap_event_incoming_connection_get_address(packet, event_addr); 752 local_cid = l2cap_event_incoming_connection_get_local_cid(packet); 753 con_handle = l2cap_event_incoming_connection_get_handle(packet); 754 755 outoing_active = false; 756 connection_target = avrcp_get_connection_for_bd_addr_for_role(AVRCP_TARGET, event_addr); 757 if (connection_target != NULL){ 758 if (connection_target->state == AVCTP_CONNECTION_W4_L2CAP_CONNECTED){ 759 outoing_active = true; 760 connection_target->incoming_declined = true; 761 } 762 } 763 764 connection_controller = avrcp_get_connection_for_bd_addr_for_role(AVRCP_CONTROLLER, event_addr); 765 if (connection_controller != NULL){ 766 if (connection_controller->state == AVCTP_CONNECTION_W4_L2CAP_CONNECTED) { 767 outoing_active = true; 768 connection_controller->incoming_declined = true; 769 } 770 } 771 772 decline_connection = outoing_active; 773 if (decline_connection == false){ 774 uint16_t avrcp_cid; 775 if ((connection_controller == NULL) || (connection_target == NULL)){ 776 avrcp_cid = avrcp_get_next_cid(AVRCP_CONTROLLER); 777 } else { 778 avrcp_cid = connection_controller->avrcp_cid; 779 } 780 // create two connection objects (both) 781 connection_target = avrcp_handle_incoming_connection_for_role(AVRCP_TARGET, connection_target, event_addr, con_handle, local_cid, avrcp_cid); 782 connection_controller = avrcp_handle_incoming_connection_for_role(AVRCP_CONTROLLER, connection_controller, event_addr, con_handle, local_cid, avrcp_cid); 783 if ((connection_target == NULL) || (connection_controller == NULL)){ 784 decline_connection = true; 785 if (connection_target) { 786 avrcp_finalize_connection(connection_target); 787 } 788 if (connection_controller) { 789 avrcp_finalize_connection(connection_controller); 790 } 791 } 792 } 793 if (decline_connection){ 794 l2cap_decline_connection(local_cid); 795 } else { 796 log_info("AVRCP: L2CAP_EVENT_INCOMING_CONNECTION local cid 0x%02x, state %d", local_cid, connection_controller->state); 797 l2cap_accept_connection(local_cid); 798 } 799 break; 800 801 case L2CAP_EVENT_CHANNEL_OPENED: 802 l2cap_event_channel_opened_get_address(packet, event_addr); 803 status = l2cap_event_channel_opened_get_status(packet); 804 local_cid = l2cap_event_channel_opened_get_local_cid(packet); 805 l2cap_mtu = l2cap_event_channel_opened_get_remote_mtu(packet); 806 con_handle = l2cap_event_channel_opened_get_handle(packet); 807 808 connection_controller = avrcp_get_connection_for_bd_addr_for_role(AVRCP_CONTROLLER, event_addr); 809 connection_target = avrcp_get_connection_for_bd_addr_for_role(AVRCP_TARGET, event_addr); 810 811 // incoming: structs are already created in L2CAP_EVENT_INCOMING_CONNECTION 812 // outgoing: structs are cteated in avrcp_connect() 813 if ((connection_controller == NULL) || (connection_target == NULL)) { 814 break; 815 } 816 817 switch (status){ 818 case ERROR_CODE_SUCCESS: 819 avrcp_handle_open_connection(connection_target, con_handle, local_cid, l2cap_mtu); 820 avrcp_handle_open_connection(connection_controller, con_handle, local_cid, l2cap_mtu); 821 avrcp_emit_connection_established(connection_controller->avrcp_cid, event_addr, con_handle, status); 822 return; 823 case L2CAP_CONNECTION_RESPONSE_RESULT_REFUSED_RESOURCES: 824 if (connection_controller->incoming_declined == true){ 825 log_info("Incoming connection was declined, and the outgoing failed"); 826 connection_controller->state = AVCTP_CONNECTION_W2_L2CAP_RETRY; 827 connection_controller->incoming_declined = false; 828 connection_target->state = AVCTP_CONNECTION_W2_L2CAP_RETRY; 829 connection_target->incoming_declined = false; 830 avrcp_retry_timer_start(connection_controller); 831 return; 832 } 833 break; 834 default: 835 break; 836 } 837 log_info("L2CAP connection to connection %s failed. status code 0x%02x", bd_addr_to_str(event_addr), status); 838 avrcp_emit_connection_established(connection_controller->avrcp_cid, event_addr, con_handle, status); 839 avrcp_finalize_connection(connection_controller); 840 avrcp_finalize_connection(connection_target); 841 842 break; 843 844 case L2CAP_EVENT_CHANNEL_CLOSED: 845 local_cid = l2cap_event_channel_closed_get_local_cid(packet); 846 847 connection_controller = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, local_cid); 848 connection_target = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_TARGET, local_cid); 849 if ((connection_controller == NULL) || (connection_target == NULL)) { 850 break; 851 } 852 avrcp_emit_connection_closed(connection_controller->avrcp_cid); 853 avrcp_finalize_connection(connection_controller); 854 avrcp_finalize_connection(connection_target); 855 break; 856 857 case L2CAP_EVENT_CAN_SEND_NOW: 858 local_cid = l2cap_event_can_send_now_get_local_cid(packet); 859 can_send = true; 860 861 connection_target = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_TARGET, local_cid); 862 if ((connection_target != NULL) && connection_target->wait_to_send){ 863 connection_target->wait_to_send = false; 864 (*avrcp_target_packet_handler)(HCI_EVENT_PACKET, channel, packet, size); 865 can_send = false; 866 } 867 868 connection_controller = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, local_cid); 869 if ((connection_controller != NULL) && connection_controller->wait_to_send){ 870 if (can_send){ 871 connection_controller->wait_to_send = false; 872 (*avrcp_controller_packet_handler)(HCI_EVENT_PACKET, channel, packet, size); 873 } else { 874 l2cap_request_can_send_now_event(local_cid); 875 } 876 } 877 break; 878 879 default: 880 break; 881 } 882 break; 883 884 case L2CAP_DATA_PACKET: 885 switch (avrcp_get_frame_type(packet[0])){ 886 case AVRCP_RESPONSE_FRAME: 887 (*avrcp_controller_packet_handler)(packet_type, channel, packet, size); 888 break; 889 case AVRCP_COMMAND_FRAME: 890 default: // make compiler happy 891 (*avrcp_target_packet_handler)(packet_type, channel, packet, size); 892 break; 893 } 894 break; 895 896 default: 897 break; 898 } 899 } 900 901 uint8_t avrcp_disconnect(uint16_t avrcp_cid){ 902 avrcp_connection_t * connection_controller = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 903 if (!connection_controller){ 904 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 905 } 906 avrcp_connection_t * connection_target = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_TARGET, avrcp_cid); 907 if (!connection_target){ 908 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 909 } 910 if (connection_controller->browsing_connection){ 911 l2cap_disconnect(connection_controller->browsing_connection->l2cap_browsing_cid, 0); 912 } 913 l2cap_disconnect(connection_controller->l2cap_signaling_cid, 0); 914 return ERROR_CODE_SUCCESS; 915 } 916 917 static void avrcp_handle_start_sdp_client_query(void * context){ 918 UNUSED(context); 919 920 btstack_linked_list_iterator_t it; 921 btstack_linked_list_iterator_init(&it, &connections); 922 while (btstack_linked_list_iterator_has_next(&it)){ 923 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 924 925 if (connection->state != AVCTP_CONNECTION_W2_SEND_SDP_QUERY) continue; 926 connection->state = AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE; 927 928 // prevent triggering SDP query twice (for each role once) 929 avrcp_connection_t * connection_with_opposite_role; 930 switch (connection->role){ 931 case AVRCP_CONTROLLER: 932 connection_with_opposite_role = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_TARGET, connection->avrcp_cid); 933 break; 934 case AVRCP_TARGET: 935 connection_with_opposite_role = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, connection->avrcp_cid); 936 break; 937 default: 938 btstack_assert(false); 939 return; 940 } 941 connection_with_opposite_role->state = AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE; 942 943 sdp_query_context.avrcp_l2cap_psm = 0; 944 sdp_query_context.avrcp_version = 0; 945 sdp_query_context.avrcp_cid = connection->avrcp_cid; 946 sdp_client_query_uuid16(&avrcp_handle_sdp_client_query_result, (uint8_t *) connection->remote_addr, BLUETOOTH_PROTOCOL_AVCTP); 947 return; 948 } 949 } 950 951 uint8_t avrcp_connect(bd_addr_t remote_addr, uint16_t * avrcp_cid){ 952 btstack_assert(avrcp_controller_packet_handler != NULL); 953 btstack_assert(avrcp_target_packet_handler != NULL); 954 955 avrcp_connection_t * connection_controller = avrcp_get_connection_for_bd_addr_for_role(AVRCP_CONTROLLER, remote_addr); 956 if (connection_controller){ 957 return ERROR_CODE_COMMAND_DISALLOWED; 958 } 959 avrcp_connection_t * connection_target = avrcp_get_connection_for_bd_addr_for_role(AVRCP_TARGET, remote_addr); 960 if (connection_target){ 961 return ERROR_CODE_COMMAND_DISALLOWED; 962 } 963 964 uint16_t cid = avrcp_get_next_cid(AVRCP_CONTROLLER); 965 966 connection_controller = avrcp_create_connection(AVRCP_CONTROLLER, remote_addr); 967 if (!connection_controller) return BTSTACK_MEMORY_ALLOC_FAILED; 968 969 connection_target = avrcp_create_connection(AVRCP_TARGET, remote_addr); 970 if (!connection_target){ 971 avrcp_finalize_connection(connection_controller); 972 return BTSTACK_MEMORY_ALLOC_FAILED; 973 } 974 975 if (avrcp_cid != NULL){ 976 *avrcp_cid = cid; 977 } 978 979 connection_controller->state = AVCTP_CONNECTION_W2_SEND_SDP_QUERY; 980 connection_controller->avrcp_cid = cid; 981 982 connection_target->state = AVCTP_CONNECTION_W2_SEND_SDP_QUERY; 983 connection_target->avrcp_cid = cid; 984 985 avrcp_handle_sdp_client_query_request.callback = &avrcp_handle_start_sdp_client_query; 986 // ignore ERROR_CODE_COMMAND_DISALLOWED because in that case, we already have requested an SDP callback 987 (void) sdp_client_register_query_callback(&avrcp_handle_sdp_client_query_request); 988 return ERROR_CODE_SUCCESS; 989 } 990 991 void avrcp_init(void){ 992 connections = NULL; 993 if (l2cap_service_registered) return; 994 995 int status = l2cap_register_service(&avrcp_packet_handler, BLUETOOTH_PSM_AVCTP, 0xffff, gap_get_security_level()); 996 if (status != ERROR_CODE_SUCCESS) return; 997 l2cap_service_registered = true; 998 } 999 1000 void avrcp_deinit(void){ 1001 avrcp_cid_counter = 0; 1002 l2cap_service_registered = false; 1003 1004 (void) memset(&sdp_query_context, 0, sizeof(avrcp_sdp_query_context_t)); 1005 (void) memset(attribute_value,0, sizeof(attribute_value)); 1006 1007 avrcp_callback = NULL; 1008 connections = NULL; 1009 avrcp_controller_packet_handler = NULL; 1010 avrcp_target_packet_handler = NULL; 1011 } 1012 1013 void avrcp_register_controller_packet_handler(btstack_packet_handler_t callback){ 1014 avrcp_controller_packet_handler = callback; 1015 } 1016 1017 void avrcp_register_target_packet_handler(btstack_packet_handler_t callback){ 1018 avrcp_target_packet_handler = callback; 1019 } 1020 1021 void avrcp_register_packet_handler(btstack_packet_handler_t callback){ 1022 btstack_assert(callback != NULL); 1023 avrcp_callback = callback; 1024 } 1025 1026 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 1027 #define FUZZ_CID 0x44 1028 #define FUZZ_CON_HANDLE 0x0001 1029 static bd_addr_t remote_addr = { 0x33, 0x33, 0x33, 0x33, 0x33, 0x33 }; 1030 void avrcp_init_fuzz(void){ 1031 // setup avrcp connections for cid 1032 avrcp_connection_t * connection_controller = avrcp_create_connection(AVRCP_CONTROLLER, remote_addr); 1033 avrcp_connection_t * connection_target = avrcp_create_connection(AVRCP_TARGET, remote_addr); 1034 avrcp_handle_open_connection(connection_controller, FUZZ_CON_HANDLE, FUZZ_CID, 999); 1035 avrcp_handle_open_connection(connection_target, FUZZ_CON_HANDLE, FUZZ_CID, 999); 1036 } 1037 void avrcp_packet_handler_fuzz(uint8_t *packet, uint16_t size){ 1038 avrcp_packet_handler(L2CAP_DATA_PACKET, FUZZ_CID, packet, size); 1039 } 1040 #endif