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 BLUEKITCHEN 24 * GMBH 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 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 67 68 static const char * avrcp_default_controller_service_name = "BTstack AVRCP Controller Service"; 69 static const char * avrcp_default_controller_service_provider_name = "BTstack AVRCP Controller Service Provider"; 70 static const char * avrcp_defaul_target_service_name = "BTstack AVRCP Target Service"; 71 static const char * avrcp_default_target_service_provider_name = "BTstack AVRCP Target Service Provider"; 72 73 static const char * avrcp_subunit_type_name[] = { 74 "MONITOR", "AUDIO", "PRINTER", "DISC", "TAPE_RECORDER_PLAYER", "TUNER", 75 "CA", "CAMERA", "RESERVED", "PANEL", "BULLETIN_BOARD", "CAMERA_STORAGE", 76 "VENDOR_UNIQUE", "RESERVED_FOR_ALL_SUBUNIT_TYPES", 77 "EXTENDED_TO_NEXT_BYTE", "UNIT", "ERROR" 78 }; 79 80 // default subunit info: single PANEL subunit 81 static const uint8_t avrcp_default_subunit_info[] = { AVRCP_SUBUNIT_TYPE_PANEL << 3}; 82 83 // globals 84 static bool avrcp_l2cap_service_registered = false; 85 86 // connections 87 static uint16_t avrcp_cid_counter; 88 static btstack_linked_list_t avrcp_connections; 89 90 // higher layer callbacks 91 static btstack_packet_handler_t avrcp_callback; 92 static btstack_packet_handler_t avrcp_controller_packet_handler; 93 static btstack_packet_handler_t avrcp_target_packet_handler; 94 95 // sdp query 96 static btstack_context_callback_registration_t avrcp_sdp_query_registration; 97 static avrcp_sdp_query_context_t avrcp_sdp_query_context; 98 static uint8_t avrcp_sdp_query_attribute_value[45]; 99 static const unsigned int avrcp_sdp_query_attribute_value_buffer_size = sizeof(avrcp_sdp_query_attribute_value); 100 101 102 const char * avrcp_subunit2str(uint16_t index){ 103 if (index <= 11) return avrcp_subunit_type_name[index]; 104 if ((index >= 0x1C) && (index <= 0x1F)) return avrcp_subunit_type_name[index - 0x10]; 105 return avrcp_subunit_type_name[16]; 106 } 107 108 static const char * avrcp_event_name[] = { 109 "ERROR", "PLAYBACK_STATUS_CHANGED", 110 "TRACK_CHANGED", "TRACK_REACHED_END", "TRACK_REACHED_START", 111 "PLAYBACK_POS_CHANGED", "BATT_STATUS_CHANGED", "SYSTEM_STATUS_CHANGED", 112 "PLAYER_APPLICATION_SETTING_CHANGED", "NOW_PLAYING_CONTENT_CHANGED", 113 "AVAILABLE_PLAYERS_CHANGED", "ADDRESSED_PLAYER_CHANGED", "UIDS_CHANGED", "VOLUME_CHANGED" 114 }; 115 const char * avrcp_event2str(uint16_t index){ 116 if (index <= 0x0d) return avrcp_event_name[index]; 117 return avrcp_event_name[0]; 118 } 119 120 static const char * avrcp_operation_name[] = { 121 "SKIP", NULL, NULL, NULL, NULL, 122 "VOLUME_UP", "VOLUME_DOWN", "MUTE", "PLAY", "STOP", "PAUSE", NULL, 123 "REWIND", "FAST_FORWARD", NULL, "FORWARD", "BACKWARD" // 0x4C 124 }; 125 126 const char * avrcp_operation2str(uint8_t operation_id){ 127 char * name = NULL; 128 if ((operation_id >= AVRCP_OPERATION_ID_SKIP) && (operation_id <= AVRCP_OPERATION_ID_BACKWARD)){ 129 name = (char *)avrcp_operation_name[operation_id - AVRCP_OPERATION_ID_SKIP]; 130 } 131 if (name == NULL){ 132 static char buffer[13]; 133 snprintf(buffer, sizeof(buffer), "Unknown 0x%02x", operation_id); 134 buffer[sizeof(buffer)-1] = 0; 135 return buffer; 136 } else { 137 return name; 138 } 139 } 140 141 static const char * avrcp_media_attribute_id_name[] = { 142 "NONE", "TITLE", "ARTIST", "ALBUM", "TRACK", "TOTAL TRACKS", "GENRE", "SONG LENGTH" 143 }; 144 const char * avrcp_attribute2str(uint8_t index){ 145 if ((index >= 1) && (index <= 7)) return avrcp_media_attribute_id_name[index]; 146 return avrcp_media_attribute_id_name[0]; 147 } 148 149 static const char * avrcp_play_status_name[] = { 150 "STOPPED", "PLAYING", "PAUSED", "FORWARD SEEK", "REVERSE SEEK", 151 "ERROR" // 0xFF 152 }; 153 const char * avrcp_play_status2str(uint8_t index){ 154 if ((index >= 1) && (index <= 4)) return avrcp_play_status_name[index]; 155 return avrcp_play_status_name[5]; 156 } 157 158 static const char * avrcp_ctype_name[] = { 159 "CONTROL", 160 "STATUS", 161 "SPECIFIC_INQUIRY", 162 "NOTIFY", 163 "GENERAL_INQUIRY", 164 "RESERVED5", 165 "RESERVED6", 166 "RESERVED7", 167 "NOT IMPLEMENTED IN REMOTE", 168 "ACCEPTED BY REMOTE", 169 "REJECTED BY REMOTE", 170 "IN_TRANSITION", 171 "IMPLEMENTED_STABLE", 172 "CHANGED_STABLE", 173 "RESERVED", 174 "INTERIM" 175 }; 176 const char * avrcp_ctype2str(uint8_t index){ 177 if (index < sizeof(avrcp_ctype_name)){ 178 return avrcp_ctype_name[index]; 179 } 180 return "NONE"; 181 } 182 183 static const char * avrcp_shuffle_mode_name[] = { 184 "SHUFFLE OFF", 185 "SHUFFLE ALL TRACKS", 186 "SHUFFLE GROUP" 187 }; 188 189 const char * avrcp_shuffle2str(uint8_t index){ 190 if ((index >= 1) && (index <= 3)) return avrcp_shuffle_mode_name[index-1]; 191 return "NONE"; 192 } 193 194 static const char * avrcp_repeat_mode_name[] = { 195 "REPEAT OFF", 196 "REPEAT SINGLE TRACK", 197 "REPEAT ALL TRACKS", 198 "REPEAT GROUP" 199 }; 200 201 const char * avrcp_repeat2str(uint8_t index){ 202 if ((index >= 1) && (index <= 4)) return avrcp_repeat_mode_name[index-1]; 203 return "NONE"; 204 } 205 206 btstack_linked_list_t avrcp_get_connections(void){ 207 return avrcp_connections; 208 } 209 210 uint8_t avrcp_cmd_opcode(uint8_t *packet, uint16_t size){ 211 uint8_t cmd_opcode_index = 5; 212 if (cmd_opcode_index > size) return AVRCP_CMD_OPCODE_UNDEFINED; 213 return packet[cmd_opcode_index]; 214 } 215 216 void avrcp_create_sdp_record(uint8_t controller, uint8_t * service, uint32_t service_record_handle, uint8_t browsing, uint16_t supported_features, 217 const char * service_name, const char * service_provider_name){ 218 uint8_t* attribute; 219 de_create_sequence(service); 220 221 // 0x0000 "Service Record Handle" 222 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 223 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 224 225 // 0x0001 "Service Class ID List" 226 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 227 attribute = de_push_sequence(service); 228 { 229 if (controller){ 230 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL); 231 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_CONTROLLER); 232 } else { 233 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_TARGET); 234 } 235 } 236 de_pop_sequence(service, attribute); 237 238 // 0x0004 "Protocol Descriptor List" 239 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 240 attribute = de_push_sequence(service); 241 { 242 uint8_t* l2cpProtocol = de_push_sequence(attribute); 243 { 244 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 245 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVCTP); 246 } 247 de_pop_sequence(attribute, l2cpProtocol); 248 249 uint8_t* avctpProtocol = de_push_sequence(attribute); 250 { 251 de_add_number(avctpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVCTP); // avctpProtocol_service 252 de_add_number(avctpProtocol, DE_UINT, DE_SIZE_16, 0x0104); // version 253 } 254 de_pop_sequence(attribute, avctpProtocol); 255 } 256 de_pop_sequence(service, attribute); 257 258 // 0x0005 "Public Browse Group" 259 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 260 attribute = de_push_sequence(service); 261 { 262 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 263 } 264 de_pop_sequence(service, attribute); 265 266 // 0x0009 "Bluetooth Profile Descriptor List" 267 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 268 attribute = de_push_sequence(service); 269 { 270 uint8_t *avrcProfile = de_push_sequence(attribute); 271 { 272 de_add_number(avrcProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL); 273 de_add_number(avrcProfile, DE_UINT, DE_SIZE_16, 0x0106); 274 } 275 de_pop_sequence(attribute, avrcProfile); 276 } 277 de_pop_sequence(service, attribute); 278 279 // 0x000d "Additional Bluetooth Profile Descriptor List" 280 if (browsing){ 281 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS); 282 attribute = de_push_sequence(service); 283 { 284 uint8_t * des = de_push_sequence(attribute); 285 { 286 uint8_t* browsing_l2cpProtocol = de_push_sequence(des); 287 { 288 de_add_number(browsing_l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 289 de_add_number(browsing_l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PSM_AVCTP_BROWSING); 290 } 291 de_pop_sequence(des, browsing_l2cpProtocol); 292 293 uint8_t* browsing_avctpProtocol = de_push_sequence(des); 294 { 295 de_add_number(browsing_avctpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVCTP); // browsing_avctpProtocol_service 296 de_add_number(browsing_avctpProtocol, DE_UINT, DE_SIZE_16, 0x0104); // version 297 } 298 de_pop_sequence(des, browsing_avctpProtocol); 299 } 300 de_pop_sequence(attribute, des); 301 } 302 de_pop_sequence(service, attribute); 303 } 304 305 306 // 0x0100 "Service Name" 307 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 308 if (service_name){ 309 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 310 } else { 311 if (controller){ 312 de_add_data(service, DE_STRING, strlen(avrcp_default_controller_service_name), (uint8_t *) avrcp_default_controller_service_name); 313 } else { 314 de_add_data(service, DE_STRING, strlen(avrcp_defaul_target_service_name), (uint8_t *) avrcp_defaul_target_service_name); 315 } 316 } 317 318 // 0x0100 "Provider Name" 319 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 320 if (service_provider_name){ 321 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 322 } else { 323 if (controller){ 324 de_add_data(service, DE_STRING, strlen(avrcp_default_controller_service_provider_name), (uint8_t *) avrcp_default_controller_service_provider_name); 325 } else { 326 de_add_data(service, DE_STRING, strlen(avrcp_default_target_service_provider_name), (uint8_t *) avrcp_default_target_service_provider_name); 327 } 328 } 329 330 // 0x0311 "Supported Features" 331 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 332 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 333 } 334 335 avrcp_connection_t * avrcp_get_connection_for_bd_addr_for_role(avrcp_role_t role, bd_addr_t addr){ 336 btstack_linked_list_iterator_t it; 337 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &avrcp_connections); 338 while (btstack_linked_list_iterator_has_next(&it)){ 339 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 340 if (connection->role != role) continue; 341 if (memcmp(addr, connection->remote_addr, 6) != 0) continue; 342 return connection; 343 } 344 return NULL; 345 } 346 347 avrcp_connection_t * avrcp_get_connection_for_l2cap_signaling_cid_for_role(avrcp_role_t role, uint16_t l2cap_cid){ 348 btstack_linked_list_iterator_t it; 349 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &avrcp_connections); 350 while (btstack_linked_list_iterator_has_next(&it)){ 351 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 352 if (connection->role != role) continue; 353 if (connection->l2cap_signaling_cid != l2cap_cid) continue; 354 return connection; 355 } 356 return NULL; 357 } 358 359 avrcp_connection_t * avrcp_get_connection_for_avrcp_cid_for_role(avrcp_role_t role, uint16_t avrcp_cid){ 360 btstack_linked_list_iterator_t it; 361 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &avrcp_connections); 362 while (btstack_linked_list_iterator_has_next(&it)){ 363 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 364 if (connection->role != role) continue; 365 if (connection->avrcp_cid != avrcp_cid) continue; 366 return connection; 367 } 368 return NULL; 369 } 370 371 avrcp_connection_t * avrcp_get_connection_for_browsing_cid_for_role(avrcp_role_t role, uint16_t browsing_cid){ 372 btstack_linked_list_iterator_t it; 373 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &avrcp_connections); 374 while (btstack_linked_list_iterator_has_next(&it)){ 375 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 376 if (connection->role != role) continue; 377 if (connection->avrcp_browsing_cid != browsing_cid) continue; 378 return connection; 379 } 380 return NULL; 381 } 382 383 avrcp_connection_t * avrcp_get_connection_for_browsing_l2cap_cid_for_role(avrcp_role_t role, uint16_t browsing_l2cap_cid){ 384 btstack_linked_list_iterator_t it; 385 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &avrcp_connections); 386 while (btstack_linked_list_iterator_has_next(&it)){ 387 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 388 if (connection->role != role) continue; 389 if (connection->browsing_connection && (connection->browsing_connection->l2cap_browsing_cid != browsing_l2cap_cid)) continue; 390 return connection; 391 } 392 return NULL; 393 } 394 395 avrcp_browsing_connection_t * avrcp_get_browsing_connection_for_l2cap_cid_for_role(avrcp_role_t role, uint16_t l2cap_cid){ 396 btstack_linked_list_iterator_t it; 397 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &avrcp_connections); 398 while (btstack_linked_list_iterator_has_next(&it)){ 399 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 400 if (connection->role != role) continue; 401 if (connection->browsing_connection && (connection->browsing_connection->l2cap_browsing_cid != l2cap_cid)) continue; 402 return connection->browsing_connection; 403 } 404 return NULL; 405 } 406 407 void avrcp_request_can_send_now(avrcp_connection_t * connection, uint16_t l2cap_cid){ 408 connection->wait_to_send = true; 409 l2cap_request_can_send_now_event(l2cap_cid); 410 } 411 412 uint16_t avrcp_get_next_cid(avrcp_role_t role){ 413 do { 414 if (avrcp_cid_counter == 0xffff) { 415 avrcp_cid_counter = 1; 416 } else { 417 avrcp_cid_counter++; 418 } 419 } while (avrcp_get_connection_for_avrcp_cid_for_role(role, avrcp_cid_counter) != NULL) ; 420 return avrcp_cid_counter; 421 } 422 423 static avrcp_connection_t * avrcp_create_connection(avrcp_role_t role, bd_addr_t remote_addr){ 424 avrcp_connection_t * connection = btstack_memory_avrcp_connection_get(); 425 if (!connection){ 426 log_error("Not enough memory to create connection for role %d", role); 427 return NULL; 428 } 429 430 connection->state = AVCTP_CONNECTION_IDLE; 431 connection->role = role; 432 433 connection->transaction_id = 0xFF; 434 connection->transaction_id_counter = 0; 435 436 connection->max_num_fragments = 0xFF; 437 438 // setup default unit / subunit info 439 connection->company_id = 0xffffff; 440 connection->unit_type = AVRCP_SUBUNIT_TYPE_PANEL; 441 connection->subunit_info_data_size = sizeof(avrcp_default_subunit_info); 442 connection->subunit_info_data = avrcp_default_subunit_info; 443 444 log_info("avrcp_create_connection, role %d", role); 445 (void)memcpy(connection->remote_addr, remote_addr, 6); 446 btstack_linked_list_add(&avrcp_connections, (btstack_linked_item_t *) connection); 447 return connection; 448 } 449 450 static void avrcp_finalize_connection(avrcp_connection_t * connection){ 451 btstack_run_loop_remove_timer(&connection->retry_timer); 452 btstack_linked_list_remove(&avrcp_connections, (btstack_linked_item_t*) connection); 453 btstack_memory_avrcp_connection_free(connection); 454 } 455 456 static void avrcp_emit_connection_established(uint16_t avrcp_cid, bd_addr_t addr, hci_con_handle_t con_handle, uint8_t status){ 457 btstack_assert(avrcp_callback != NULL); 458 459 uint8_t event[14]; 460 int pos = 0; 461 event[pos++] = HCI_EVENT_AVRCP_META; 462 event[pos++] = sizeof(event) - 2; 463 event[pos++] = AVRCP_SUBEVENT_CONNECTION_ESTABLISHED; 464 event[pos++] = status; 465 little_endian_store_16(event, pos, avrcp_cid); 466 pos += 2; 467 reverse_bd_addr(addr,&event[pos]); 468 pos += 6; 469 little_endian_store_16(event, pos, con_handle); 470 pos += 2; 471 (*avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 472 } 473 474 static void avrcp_emit_connection_closed(uint16_t avrcp_cid){ 475 btstack_assert(avrcp_callback != NULL); 476 477 uint8_t event[5]; 478 int pos = 0; 479 event[pos++] = HCI_EVENT_AVRCP_META; 480 event[pos++] = sizeof(event) - 2; 481 event[pos++] = AVRCP_SUBEVENT_CONNECTION_RELEASED; 482 little_endian_store_16(event, pos, avrcp_cid); 483 pos += 2; 484 (*avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 485 } 486 487 uint16_t avrcp_sdp_query_browsing_l2cap_psm(void){ 488 return avrcp_sdp_query_context.browsing_l2cap_psm; 489 } 490 491 void avrcp_handle_sdp_client_query_attribute_value(uint8_t *packet){ 492 des_iterator_t des_list_it; 493 des_iterator_t prot_it; 494 495 // Handle new SDP record 496 if (sdp_event_query_attribute_byte_get_record_id(packet) != avrcp_sdp_query_context.record_id) { 497 avrcp_sdp_query_context.record_id = sdp_event_query_attribute_byte_get_record_id(packet); 498 avrcp_sdp_query_context.parse_sdp_record = 0; 499 // log_info("SDP Record: Nr: %d", record_id); 500 } 501 502 if (sdp_event_query_attribute_byte_get_attribute_length(packet) <= avrcp_sdp_query_attribute_value_buffer_size) { 503 avrcp_sdp_query_attribute_value[sdp_event_query_attribute_byte_get_data_offset(packet)] = sdp_event_query_attribute_byte_get_data(packet); 504 505 if ((uint16_t)(sdp_event_query_attribute_byte_get_data_offset(packet)+1) == sdp_event_query_attribute_byte_get_attribute_length(packet)) { 506 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)) { 507 case BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST: 508 if (de_get_element_type(avrcp_sdp_query_attribute_value) != DE_DES) break; 509 for (des_iterator_init(&des_list_it, avrcp_sdp_query_attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 510 uint8_t * element = des_iterator_get_element(&des_list_it); 511 if (de_get_element_type(element) != DE_UUID) continue; 512 uint32_t uuid = de_get_uuid32(element); 513 switch (uuid){ 514 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_TARGET: 515 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL: 516 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_CONTROLLER: 517 avrcp_sdp_query_context.parse_sdp_record = 1; 518 break; 519 default: 520 break; 521 } 522 } 523 break; 524 525 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: { 526 if (!avrcp_sdp_query_context.parse_sdp_record) break; 527 // log_info("SDP Attribute: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet)); 528 for (des_iterator_init(&des_list_it, avrcp_sdp_query_attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 529 uint8_t *des_element; 530 uint8_t *element; 531 uint32_t uuid; 532 533 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 534 535 des_element = des_iterator_get_element(&des_list_it); 536 des_iterator_init(&prot_it, des_element); 537 element = des_iterator_get_element(&prot_it); 538 539 if (de_get_element_type(element) != DE_UUID) continue; 540 541 uuid = de_get_uuid32(element); 542 des_iterator_next(&prot_it); 543 switch (uuid){ 544 case BLUETOOTH_PROTOCOL_L2CAP: 545 if (!des_iterator_has_more(&prot_it)) continue; 546 de_element_get_uint16(des_iterator_get_element(&prot_it), &avrcp_sdp_query_context.avrcp_l2cap_psm); 547 break; 548 case BLUETOOTH_PROTOCOL_AVCTP: 549 if (!des_iterator_has_more(&prot_it)) continue; 550 de_element_get_uint16(des_iterator_get_element(&prot_it), &avrcp_sdp_query_context.avrcp_version); 551 break; 552 default: 553 break; 554 } 555 } 556 } 557 break; 558 case BLUETOOTH_ATTRIBUTE_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS: { 559 // log_info("SDP Attribute: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet)); 560 if (!avrcp_sdp_query_context.parse_sdp_record) break; 561 if (de_get_element_type(avrcp_sdp_query_attribute_value) != DE_DES) break; 562 563 des_iterator_t des_list_0_it; 564 uint8_t *element_0; 565 566 des_iterator_init(&des_list_0_it, avrcp_sdp_query_attribute_value); 567 element_0 = des_iterator_get_element(&des_list_0_it); 568 569 for (des_iterator_init(&des_list_it, element_0); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 570 uint8_t *des_element; 571 uint8_t *element; 572 uint32_t uuid; 573 574 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 575 576 des_element = des_iterator_get_element(&des_list_it); 577 des_iterator_init(&prot_it, des_element); 578 element = des_iterator_get_element(&prot_it); 579 580 if (de_get_element_type(element) != DE_UUID) continue; 581 582 uuid = de_get_uuid32(element); 583 des_iterator_next(&prot_it); 584 switch (uuid){ 585 case BLUETOOTH_PROTOCOL_L2CAP: 586 if (!des_iterator_has_more(&prot_it)) continue; 587 de_element_get_uint16(des_iterator_get_element(&prot_it), &avrcp_sdp_query_context.browsing_l2cap_psm); 588 break; 589 case BLUETOOTH_PROTOCOL_AVCTP: 590 if (!des_iterator_has_more(&prot_it)) continue; 591 de_element_get_uint16(des_iterator_get_element(&prot_it), &avrcp_sdp_query_context.browsing_version); 592 break; 593 default: 594 break; 595 } 596 } 597 } 598 break; 599 default: 600 break; 601 } 602 } 603 } else { 604 log_error("SDP attribute value buffer size exceeded: available %d, required %d", avrcp_sdp_query_attribute_value_buffer_size, sdp_event_query_attribute_byte_get_attribute_length(packet)); 605 } 606 } 607 608 static void avrcp_handle_sdp_query_failed(avrcp_connection_t * connection, uint8_t status){ 609 if (connection == NULL) return; 610 log_info("AVRCP: SDP query failed with status 0x%02x.", status); 611 avrcp_emit_connection_established(connection->avrcp_cid, connection->remote_addr, connection->con_handle, status); 612 avrcp_finalize_connection(connection); 613 } 614 615 static void avrcp_handle_sdp_query_succeeded(avrcp_connection_t * connection){ 616 if (connection == NULL) return; 617 connection->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 618 connection->avrcp_l2cap_psm = avrcp_sdp_query_context.avrcp_l2cap_psm; 619 connection->browsing_version = avrcp_sdp_query_context.browsing_version; 620 connection->browsing_l2cap_psm = avrcp_sdp_query_context.browsing_l2cap_psm; 621 } 622 623 static void avrcp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 624 UNUSED(packet_type); 625 UNUSED(channel); 626 UNUSED(size); 627 628 bool state_ok = true; 629 avrcp_connection_t * avrcp_target_connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_TARGET, avrcp_sdp_query_context.avrcp_cid); 630 if (!avrcp_target_connection || avrcp_target_connection->state != AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE) { 631 state_ok = false; 632 } 633 avrcp_connection_t * avrcp_controller_connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_sdp_query_context.avrcp_cid); 634 if (!avrcp_controller_connection || avrcp_controller_connection->state != AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE) { 635 state_ok = false; 636 } 637 if (!state_ok){ 638 // something wrong, nevertheless, start next sdp query if this one is complete 639 if (hci_event_packet_get_type(packet) == SDP_EVENT_QUERY_COMPLETE){ 640 (void) sdp_client_register_query_callback(&avrcp_sdp_query_registration); 641 } 642 return; 643 } 644 645 uint8_t status; 646 647 switch (hci_event_packet_get_type(packet)){ 648 case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: 649 avrcp_handle_sdp_client_query_attribute_value(packet); 650 return; 651 652 case SDP_EVENT_QUERY_COMPLETE: 653 status = sdp_event_query_complete_get_status(packet); 654 655 if (status != ERROR_CODE_SUCCESS){ 656 avrcp_handle_sdp_query_failed(avrcp_controller_connection, status); 657 avrcp_handle_sdp_query_failed(avrcp_target_connection, status); 658 break; 659 } 660 661 if (!avrcp_sdp_query_context.avrcp_l2cap_psm){ 662 avrcp_handle_sdp_query_failed(avrcp_controller_connection, SDP_SERVICE_NOT_FOUND); 663 avrcp_handle_sdp_query_failed(avrcp_target_connection, SDP_SERVICE_NOT_FOUND); 664 break; 665 } 666 667 avrcp_handle_sdp_query_succeeded(avrcp_controller_connection); 668 avrcp_handle_sdp_query_succeeded(avrcp_target_connection); 669 670 l2cap_create_channel(&avrcp_packet_handler, avrcp_target_connection->remote_addr, avrcp_sdp_query_context.avrcp_l2cap_psm, l2cap_max_mtu(), NULL); 671 break; 672 673 default: 674 return; 675 } 676 677 // register the SDP Query request to check if there is another connection waiting for the query 678 // ignore ERROR_CODE_COMMAND_DISALLOWED because in that case, we already have requested an SDP callback 679 (void) sdp_client_register_query_callback(&avrcp_sdp_query_registration); 680 } 681 682 683 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){ 684 if (connection == NULL){ 685 connection = avrcp_create_connection(role, event_addr); 686 } 687 if (connection) { 688 connection->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 689 connection->l2cap_signaling_cid = local_cid; 690 connection->avrcp_cid = avrcp_cid; 691 connection->con_handle = con_handle; 692 btstack_run_loop_remove_timer(&connection->retry_timer); 693 } 694 return connection; 695 } 696 697 static void avrcp_handle_open_connection(avrcp_connection_t * connection, hci_con_handle_t con_handle, uint16_t local_cid, uint16_t l2cap_mtu){ 698 connection->l2cap_signaling_cid = local_cid; 699 connection->l2cap_mtu = l2cap_mtu; 700 connection->con_handle = con_handle; 701 connection->incoming_declined = false; 702 connection->song_length_ms = 0xFFFFFFFF; 703 connection->song_position_ms = 0xFFFFFFFF; 704 connection->playback_status = AVRCP_PLAYBACK_STATUS_STOPPED; 705 connection->state = AVCTP_CONNECTION_OPENED; 706 707 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); 708 } 709 710 static void avrcp_retry_timer_timeout_handler(btstack_timer_source_t * timer){ 711 uint16_t avrcp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer); 712 avrcp_connection_t * connection_controller = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 713 if (connection_controller == NULL) return; 714 avrcp_connection_t * connection_target = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_TARGET, avrcp_cid); 715 if (connection_target == NULL) return; 716 717 if (connection_controller->state == AVCTP_CONNECTION_W2_L2CAP_RETRY){ 718 connection_controller->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 719 connection_target->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 720 l2cap_create_channel(&avrcp_packet_handler, connection_controller->remote_addr, connection_controller->avrcp_l2cap_psm, l2cap_max_mtu(), NULL); 721 } 722 } 723 724 static void avrcp_retry_timer_start(avrcp_connection_t * connection){ 725 btstack_run_loop_set_timer_handler(&connection->retry_timer, avrcp_retry_timer_timeout_handler); 726 btstack_run_loop_set_timer_context(&connection->retry_timer, (void *)(uintptr_t)connection->avrcp_cid); 727 728 // add some jitter/randomness to reconnect delay 729 uint32_t timeout = 100 + (btstack_run_loop_get_time_ms() & 0x7F); 730 btstack_run_loop_set_timer(&connection->retry_timer, timeout); 731 732 btstack_run_loop_add_timer(&connection->retry_timer); 733 } 734 735 static avrcp_frame_type_t avrcp_get_frame_type(uint8_t header){ 736 return (avrcp_frame_type_t)((header & 0x02) >> 1); 737 } 738 739 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 740 UNUSED(channel); 741 UNUSED(size); 742 bd_addr_t event_addr; 743 uint16_t local_cid; 744 uint16_t l2cap_mtu; 745 uint8_t status; 746 bool decline_connection; 747 bool outoing_active; 748 hci_con_handle_t con_handle; 749 750 avrcp_connection_t * connection_controller; 751 avrcp_connection_t * connection_target; 752 bool can_send; 753 754 switch (packet_type) { 755 case HCI_EVENT_PACKET: 756 switch (hci_event_packet_get_type(packet)) { 757 758 case L2CAP_EVENT_INCOMING_CONNECTION: 759 btstack_assert(avrcp_controller_packet_handler != NULL); 760 btstack_assert(avrcp_target_packet_handler != NULL); 761 762 l2cap_event_incoming_connection_get_address(packet, event_addr); 763 local_cid = l2cap_event_incoming_connection_get_local_cid(packet); 764 con_handle = l2cap_event_incoming_connection_get_handle(packet); 765 766 outoing_active = false; 767 connection_target = avrcp_get_connection_for_bd_addr_for_role(AVRCP_TARGET, event_addr); 768 if (connection_target != NULL){ 769 if (connection_target->state == AVCTP_CONNECTION_W4_L2CAP_CONNECTED){ 770 outoing_active = true; 771 connection_target->incoming_declined = true; 772 } 773 } 774 775 connection_controller = avrcp_get_connection_for_bd_addr_for_role(AVRCP_CONTROLLER, event_addr); 776 if (connection_controller != NULL){ 777 if (connection_controller->state == AVCTP_CONNECTION_W4_L2CAP_CONNECTED) { 778 outoing_active = true; 779 connection_controller->incoming_declined = true; 780 } 781 } 782 783 decline_connection = outoing_active; 784 if (decline_connection == false){ 785 uint16_t avrcp_cid; 786 if ((connection_controller == NULL) || (connection_target == NULL)){ 787 avrcp_cid = avrcp_get_next_cid(AVRCP_CONTROLLER); 788 } else { 789 avrcp_cid = connection_controller->avrcp_cid; 790 } 791 // create two connection objects (both) 792 connection_target = avrcp_handle_incoming_connection_for_role(AVRCP_TARGET, connection_target, event_addr, con_handle, local_cid, avrcp_cid); 793 connection_controller = avrcp_handle_incoming_connection_for_role(AVRCP_CONTROLLER, connection_controller, event_addr, con_handle, local_cid, avrcp_cid); 794 if ((connection_target == NULL) || (connection_controller == NULL)){ 795 decline_connection = true; 796 if (connection_target) { 797 avrcp_finalize_connection(connection_target); 798 } 799 if (connection_controller) { 800 avrcp_finalize_connection(connection_controller); 801 } 802 } 803 } 804 if (decline_connection){ 805 l2cap_decline_connection(local_cid); 806 } else { 807 log_info("AVRCP: L2CAP_EVENT_INCOMING_CONNECTION local cid 0x%02x, state %d", local_cid, connection_controller->state); 808 l2cap_accept_connection(local_cid); 809 } 810 break; 811 812 case L2CAP_EVENT_CHANNEL_OPENED: 813 l2cap_event_channel_opened_get_address(packet, event_addr); 814 status = l2cap_event_channel_opened_get_status(packet); 815 local_cid = l2cap_event_channel_opened_get_local_cid(packet); 816 l2cap_mtu = l2cap_event_channel_opened_get_remote_mtu(packet); 817 con_handle = l2cap_event_channel_opened_get_handle(packet); 818 819 connection_controller = avrcp_get_connection_for_bd_addr_for_role(AVRCP_CONTROLLER, event_addr); 820 connection_target = avrcp_get_connection_for_bd_addr_for_role(AVRCP_TARGET, event_addr); 821 822 // incoming: structs are already created in L2CAP_EVENT_INCOMING_CONNECTION 823 // outgoing: structs are cteated in avrcp_connect() 824 if ((connection_controller == NULL) || (connection_target == NULL)) { 825 break; 826 } 827 828 switch (status){ 829 case ERROR_CODE_SUCCESS: 830 avrcp_handle_open_connection(connection_target, con_handle, local_cid, l2cap_mtu); 831 avrcp_handle_open_connection(connection_controller, con_handle, local_cid, l2cap_mtu); 832 avrcp_emit_connection_established(connection_controller->avrcp_cid, event_addr, con_handle, status); 833 return; 834 case L2CAP_CONNECTION_RESPONSE_RESULT_REFUSED_RESOURCES: 835 if (connection_controller->incoming_declined == true){ 836 log_info("Incoming connection was declined, and the outgoing failed"); 837 connection_controller->state = AVCTP_CONNECTION_W2_L2CAP_RETRY; 838 connection_controller->incoming_declined = false; 839 connection_target->state = AVCTP_CONNECTION_W2_L2CAP_RETRY; 840 connection_target->incoming_declined = false; 841 avrcp_retry_timer_start(connection_controller); 842 return; 843 } 844 break; 845 default: 846 break; 847 } 848 log_info("L2CAP connection to connection %s failed. status code 0x%02x", bd_addr_to_str(event_addr), status); 849 avrcp_emit_connection_established(connection_controller->avrcp_cid, event_addr, con_handle, status); 850 avrcp_finalize_connection(connection_controller); 851 avrcp_finalize_connection(connection_target); 852 853 break; 854 855 case L2CAP_EVENT_CHANNEL_CLOSED: 856 local_cid = l2cap_event_channel_closed_get_local_cid(packet); 857 858 connection_controller = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, local_cid); 859 connection_target = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_TARGET, local_cid); 860 if ((connection_controller == NULL) || (connection_target == NULL)) { 861 break; 862 } 863 avrcp_emit_connection_closed(connection_controller->avrcp_cid); 864 avrcp_finalize_connection(connection_controller); 865 avrcp_finalize_connection(connection_target); 866 break; 867 868 case L2CAP_EVENT_CAN_SEND_NOW: 869 local_cid = l2cap_event_can_send_now_get_local_cid(packet); 870 can_send = true; 871 872 connection_target = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_TARGET, local_cid); 873 if ((connection_target != NULL) && connection_target->wait_to_send){ 874 connection_target->wait_to_send = false; 875 (*avrcp_target_packet_handler)(HCI_EVENT_PACKET, channel, packet, size); 876 can_send = false; 877 } 878 879 connection_controller = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, local_cid); 880 if ((connection_controller != NULL) && connection_controller->wait_to_send){ 881 if (can_send){ 882 connection_controller->wait_to_send = false; 883 (*avrcp_controller_packet_handler)(HCI_EVENT_PACKET, channel, packet, size); 884 } else { 885 l2cap_request_can_send_now_event(local_cid); 886 } 887 } 888 break; 889 890 default: 891 break; 892 } 893 break; 894 895 case L2CAP_DATA_PACKET: 896 switch (avrcp_get_frame_type(packet[0])){ 897 case AVRCP_RESPONSE_FRAME: 898 (*avrcp_controller_packet_handler)(packet_type, channel, packet, size); 899 break; 900 case AVRCP_COMMAND_FRAME: 901 default: // make compiler happy 902 (*avrcp_target_packet_handler)(packet_type, channel, packet, size); 903 break; 904 } 905 break; 906 907 default: 908 break; 909 } 910 } 911 912 uint8_t avrcp_disconnect(uint16_t avrcp_cid){ 913 avrcp_connection_t * connection_controller = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 914 if (!connection_controller){ 915 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 916 } 917 avrcp_connection_t * connection_target = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_TARGET, avrcp_cid); 918 if (!connection_target){ 919 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 920 } 921 if (connection_controller->browsing_connection){ 922 l2cap_disconnect(connection_controller->browsing_connection->l2cap_browsing_cid, 0); 923 } 924 l2cap_disconnect(connection_controller->l2cap_signaling_cid, 0); 925 return ERROR_CODE_SUCCESS; 926 } 927 928 static void avrcp_handle_start_sdp_client_query(void * context){ 929 UNUSED(context); 930 931 btstack_linked_list_iterator_t it; 932 btstack_linked_list_iterator_init(&it, &avrcp_connections); 933 while (btstack_linked_list_iterator_has_next(&it)){ 934 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 935 936 if (connection->state != AVCTP_CONNECTION_W2_SEND_SDP_QUERY) continue; 937 connection->state = AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE; 938 939 // prevent triggering SDP query twice (for each role once) 940 avrcp_connection_t * connection_with_opposite_role; 941 switch (connection->role){ 942 case AVRCP_CONTROLLER: 943 connection_with_opposite_role = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_TARGET, connection->avrcp_cid); 944 break; 945 case AVRCP_TARGET: 946 connection_with_opposite_role = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, connection->avrcp_cid); 947 break; 948 default: 949 btstack_assert(false); 950 return; 951 } 952 connection_with_opposite_role->state = AVCTP_CONNECTION_W4_SDP_QUERY_COMPLETE; 953 954 avrcp_sdp_query_context.avrcp_l2cap_psm = 0; 955 avrcp_sdp_query_context.avrcp_version = 0; 956 avrcp_sdp_query_context.avrcp_cid = connection->avrcp_cid; 957 sdp_client_query_uuid16(&avrcp_handle_sdp_client_query_result, (uint8_t *) connection->remote_addr, BLUETOOTH_PROTOCOL_AVCTP); 958 return; 959 } 960 } 961 962 uint8_t avrcp_connect(bd_addr_t remote_addr, uint16_t * avrcp_cid){ 963 btstack_assert(avrcp_controller_packet_handler != NULL); 964 btstack_assert(avrcp_target_packet_handler != NULL); 965 966 avrcp_connection_t * connection_controller = avrcp_get_connection_for_bd_addr_for_role(AVRCP_CONTROLLER, remote_addr); 967 if (connection_controller){ 968 return ERROR_CODE_COMMAND_DISALLOWED; 969 } 970 avrcp_connection_t * connection_target = avrcp_get_connection_for_bd_addr_for_role(AVRCP_TARGET, remote_addr); 971 if (connection_target){ 972 return ERROR_CODE_COMMAND_DISALLOWED; 973 } 974 975 uint16_t cid = avrcp_get_next_cid(AVRCP_CONTROLLER); 976 977 connection_controller = avrcp_create_connection(AVRCP_CONTROLLER, remote_addr); 978 if (!connection_controller) return BTSTACK_MEMORY_ALLOC_FAILED; 979 980 connection_target = avrcp_create_connection(AVRCP_TARGET, remote_addr); 981 if (!connection_target){ 982 avrcp_finalize_connection(connection_controller); 983 return BTSTACK_MEMORY_ALLOC_FAILED; 984 } 985 986 if (avrcp_cid != NULL){ 987 *avrcp_cid = cid; 988 } 989 990 connection_controller->state = AVCTP_CONNECTION_W2_SEND_SDP_QUERY; 991 connection_controller->avrcp_cid = cid; 992 993 connection_target->state = AVCTP_CONNECTION_W2_SEND_SDP_QUERY; 994 connection_target->avrcp_cid = cid; 995 996 avrcp_sdp_query_registration.callback = &avrcp_handle_start_sdp_client_query; 997 // ignore ERROR_CODE_COMMAND_DISALLOWED because in that case, we already have requested an SDP callback 998 (void) sdp_client_register_query_callback(&avrcp_sdp_query_registration); 999 return ERROR_CODE_SUCCESS; 1000 } 1001 1002 void avrcp_init(void){ 1003 avrcp_connections = NULL; 1004 if (avrcp_l2cap_service_registered) return; 1005 1006 int status = l2cap_register_service(&avrcp_packet_handler, BLUETOOTH_PSM_AVCTP, 0xffff, gap_get_security_level()); 1007 if (status != ERROR_CODE_SUCCESS) return; 1008 avrcp_l2cap_service_registered = true; 1009 } 1010 1011 void avrcp_deinit(void){ 1012 avrcp_l2cap_service_registered = false; 1013 1014 avrcp_cid_counter = 0; 1015 avrcp_connections = NULL; 1016 1017 avrcp_callback = NULL; 1018 avrcp_controller_packet_handler = NULL; 1019 avrcp_target_packet_handler = NULL; 1020 1021 (void) memset(&avrcp_sdp_query_registration, 0, sizeof(avrcp_sdp_query_registration)); 1022 (void) memset(&avrcp_sdp_query_context, 0, sizeof(avrcp_sdp_query_context_t)); 1023 (void) memset(avrcp_sdp_query_attribute_value, 0, sizeof(avrcp_sdp_query_attribute_value)); 1024 } 1025 1026 void avrcp_register_controller_packet_handler(btstack_packet_handler_t callback){ 1027 avrcp_controller_packet_handler = callback; 1028 } 1029 1030 void avrcp_register_target_packet_handler(btstack_packet_handler_t callback){ 1031 avrcp_target_packet_handler = callback; 1032 } 1033 1034 void avrcp_register_packet_handler(btstack_packet_handler_t callback){ 1035 btstack_assert(callback != NULL); 1036 avrcp_callback = callback; 1037 } 1038 1039 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 1040 #define FUZZ_CID 0x44 1041 #define FUZZ_CON_HANDLE 0x0001 1042 static bd_addr_t remote_addr = { 0x33, 0x33, 0x33, 0x33, 0x33, 0x33 }; 1043 void avrcp_init_fuzz(void){ 1044 // setup avrcp connections for cid 1045 avrcp_connection_t * connection_controller = avrcp_create_connection(AVRCP_CONTROLLER, remote_addr); 1046 avrcp_connection_t * connection_target = avrcp_create_connection(AVRCP_TARGET, remote_addr); 1047 avrcp_handle_open_connection(connection_controller, FUZZ_CON_HANDLE, FUZZ_CID, 999); 1048 avrcp_handle_open_connection(connection_target, FUZZ_CON_HANDLE, FUZZ_CID, 999); 1049 } 1050 void avrcp_packet_handler_fuzz(uint8_t *packet, uint16_t size){ 1051 avrcp_packet_handler(L2CAP_DATA_PACKET, FUZZ_CID, packet, size); 1052 } 1053 #endif