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 <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 45 #include "btstack.h" 46 #include "classic/avrcp.h" 47 #include "classic/avrcp_controller.h" 48 49 #define PSM_AVCTP BLUETOOTH_PROTOCOL_AVCTP 50 #define PSM_AVCTP_BROWSING 0x001b 51 52 /* 53 Category 1: Player/Recorder 54 Category 2: Monitor/Amplifier 55 Category 3: Tuner 56 Category 4: Menu 57 */ 58 59 /* controller supported features 60 Bit 0 = Category 1 61 Bit 1 = Category 2 62 Bit 2 = Category 3 63 Bit 3 = Category 4 64 Bit 4-5 = RFA 65 Bit 6 = Supports browsing 66 Bit 7-15 = RFA 67 The bits for supported categories are set to 1. Others are set to 0. 68 */ 69 70 /* target supported features 71 Bit 0 = Category 1 72 Bit 1 = Category 2 73 Bit 2 = Category 3 74 Bit 3 = Category 4 75 Bit 4 = Player Application Settings. Bit 0 should be set for this bit to be set. 76 Bit 5 = Group Navigation. Bit 0 should be set for this bit to be set. 77 Bit 6 = Supports browsing*4 78 Bit 7 = Supports multiple media player applications 79 Bit 8-15 = RFA 80 The bits for supported categories are set to 1. Others are set to 0. 81 */ 82 83 static const char * default_avrcp_controller_service_name = "BTstack AVRCP Controller Service"; 84 static const char * default_avrcp_controller_service_provider_name = "BTstack AVRCP Controller Service Provider"; 85 static const char * default_avrcp_target_service_name = "BTstack AVRCP Target Service"; 86 static const char * default_avrcp_target_service_provider_name = "BTstack AVRCP Target Service Provider"; 87 88 static uint16_t avrcp_cid_counter = 0; 89 90 static avrcp_context_t * sdp_query_context; 91 static int record_id = -1; 92 static uint8_t attribute_value[1000]; 93 static const unsigned int attribute_value_buffer_size = sizeof(attribute_value); 94 95 static void avrcp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 96 97 static const char * avrcp_subunit_type_name[] = { 98 "MONITOR", "AUDIO", "PRINTER", "DISC", "TAPE_RECORDER_PLAYER", "TUNER", 99 "CA", "CAMERA", "RESERVED", "PANEL", "BULLETIN_BOARD", "CAMERA_STORAGE", 100 "VENDOR_UNIQUE", "RESERVED_FOR_ALL_SUBUNIT_TYPES", 101 "EXTENDED_TO_NEXT_BYTE", "UNIT", "ERROR" 102 }; 103 104 const char * avrcp_subunit2str(uint16_t index){ 105 if (index <= 11) return avrcp_subunit_type_name[index]; 106 if (index >= 0x1C && index <= 0x1F) return avrcp_subunit_type_name[index - 0x10]; 107 return avrcp_subunit_type_name[16]; 108 } 109 110 static const char * avrcp_event_name[] = { 111 "ERROR", "PLAYBACK_STATUS_CHANGED", 112 "TRACK_CHANGED", "TRACK_REACHED_END", "TRACK_REACHED_START", 113 "PLAYBACK_POS_CHANGED", "BATT_STATUS_CHANGED", "SYSTEM_STATUS_CHANGED", 114 "PLAYER_APPLICATION_SETTING_CHANGED", "NOW_PLAYING_CONTENT_CHANGED", 115 "AVAILABLE_PLAYERS_CHANGED", "ADDRESSED_PLAYER_CHANGED", "UIDS_CHANGED", "VOLUME_CHANGED" 116 }; 117 const char * avrcp_event2str(uint16_t index){ 118 if (index <= 0x0d) return avrcp_event_name[index]; 119 return avrcp_event_name[0]; 120 } 121 122 static const char * avrcp_operation_name[] = { 123 "NOT SUPPORTED", // 0x3B 124 "SKIP", "NOT SUPPORTED", "NOT SUPPORTED", "NOT SUPPORTED", "NOT SUPPORTED", 125 "VOLUME_UP", "VOLUME_DOWN", "MUTE", "PLAY", "STOP", "PAUSE", "NOT SUPPORTED", 126 "REWIND", "FAST_FORWARD", "NOT SUPPORTED", "FORWARD", "BACKWARD" // 0x4C 127 }; 128 const char * avrcp_operation2str(uint8_t index){ 129 if (index >= 0x3B && index <= 0x4C) return avrcp_operation_name[index - 0x3B]; 130 return avrcp_operation_name[0]; 131 } 132 133 static const char * avrcp_media_attribute_id_name[] = { 134 "NONE", "TITLE", "ARTIST", "ALBUM", "TRACK", "TOTAL TRACKS", "GENRE", "SONG LENGTH" 135 }; 136 const char * avrcp_attribute2str(uint8_t index){ 137 if (index >= 1 && index <= 7) return avrcp_media_attribute_id_name[index]; 138 return avrcp_media_attribute_id_name[0]; 139 } 140 141 static const char * avrcp_play_status_name[] = { 142 "STOPPED", "PLAYING", "PAUSED", "FORWARD SEEK", "REVERSE SEEK", 143 "ERROR" // 0xFF 144 }; 145 const char * avrcp_play_status2str(uint8_t index){ 146 if (index >= 1 && index <= 4) return avrcp_play_status_name[index]; 147 return avrcp_play_status_name[5]; 148 } 149 150 static const char * avrcp_ctype_name[] = { 151 "CONTROL", 152 "STATUS", 153 "SPECIFIC_INQUIRY", 154 "NOTIFY", 155 "GENERAL_INQUIRY", 156 "RESERVED5", 157 "RESERVED6", 158 "RESERVED7", 159 "NOT IMPLEMENTED IN REMOTE", 160 "ACCEPTED BY REMOTE", 161 "REJECTED BY REMOTE", 162 "IN_TRANSITION", 163 "IMPLEMENTED_STABLE", 164 "CHANGED_STABLE", 165 "RESERVED", 166 "INTERIM" 167 }; 168 const char * avrcp_ctype2str(uint8_t index){ 169 if (index < sizeof(avrcp_ctype_name)){ 170 return avrcp_ctype_name[index]; 171 } 172 return "NONE"; 173 } 174 175 static const char * avrcp_shuffle_mode_name[] = { 176 "SHUFFLE OFF", 177 "SHUFFLE ALL TRACKS", 178 "SHUFFLE GROUP" 179 }; 180 181 const char * avrcp_shuffle2str(uint8_t index){ 182 if (index >= 1 && index <= 3) return avrcp_shuffle_mode_name[index-1]; 183 return "NONE"; 184 } 185 186 static const char * avrcp_repeat_mode_name[] = { 187 "REPEAT OFF", 188 "REPEAT SINGLE TRACK", 189 "REPEAT ALL TRACKS", 190 "REPEAT GROUP" 191 }; 192 193 const char * avrcp_repeat2str(uint8_t index){ 194 if (index >= 1 && index <= 4) return avrcp_repeat_mode_name[index-1]; 195 return "NONE"; 196 } 197 198 void avrcp_create_sdp_record(uint8_t controller, uint8_t * service, uint32_t service_record_handle, uint8_t browsing, uint16_t supported_features, const char * service_name, const char * service_provider_name){ 199 uint8_t* attribute; 200 de_create_sequence(service); 201 202 // 0x0000 "Service Record Handle" 203 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE); 204 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 205 206 // 0x0001 "Service Class ID List" 207 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST); 208 attribute = de_push_sequence(service); 209 { 210 if (controller){ 211 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL); 212 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_CONTROLLER); 213 } else { 214 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_TARGET); 215 } 216 } 217 de_pop_sequence(service, attribute); 218 219 // 0x0004 "Protocol Descriptor List" 220 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST); 221 attribute = de_push_sequence(service); 222 { 223 uint8_t* l2cpProtocol = de_push_sequence(attribute); 224 { 225 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 226 de_add_number(l2cpProtocol, DE_UINT, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVCTP); 227 } 228 de_pop_sequence(attribute, l2cpProtocol); 229 230 uint8_t* avctpProtocol = de_push_sequence(attribute); 231 { 232 de_add_number(avctpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVCTP); // avctpProtocol_service 233 de_add_number(avctpProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 234 } 235 de_pop_sequence(attribute, avctpProtocol); 236 } 237 de_pop_sequence(service, attribute); 238 239 // 0x0005 "Public Browse Group" 240 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group 241 attribute = de_push_sequence(service); 242 { 243 de_add_number(attribute, DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 244 } 245 de_pop_sequence(service, attribute); 246 247 // 0x0009 "Bluetooth Profile Descriptor List" 248 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST); 249 attribute = de_push_sequence(service); 250 { 251 uint8_t *avrcProfile = de_push_sequence(attribute); 252 { 253 de_add_number(avrcProfile, DE_UUID, DE_SIZE_16, BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL); 254 de_add_number(avrcProfile, DE_UINT, DE_SIZE_16, 0x0105); 255 } 256 de_pop_sequence(attribute, avrcProfile); 257 } 258 de_pop_sequence(service, attribute); 259 260 // 0x000d "Additional Bluetooth Profile Descriptor List" 261 if (browsing){ 262 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS); 263 attribute = de_push_sequence(service); 264 { 265 uint8_t * des = de_push_sequence(attribute); 266 { 267 uint8_t* browsing_l2cpProtocol = de_push_sequence(des); 268 { 269 de_add_number(browsing_l2cpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP); 270 de_add_number(browsing_l2cpProtocol, DE_UINT, DE_SIZE_16, PSM_AVCTP_BROWSING); 271 } 272 de_pop_sequence(des, browsing_l2cpProtocol); 273 274 uint8_t* browsing_avctpProtocol = de_push_sequence(des); 275 { 276 de_add_number(browsing_avctpProtocol, DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVCTP); // browsing_avctpProtocol_service 277 de_add_number(browsing_avctpProtocol, DE_UINT, DE_SIZE_16, 0x0103); // version 278 } 279 de_pop_sequence(des, browsing_avctpProtocol); 280 } 281 de_pop_sequence(attribute, des); 282 } 283 de_pop_sequence(service, attribute); 284 } 285 286 287 // 0x0100 "Service Name" 288 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 289 if (service_name){ 290 de_add_data(service, DE_STRING, strlen(service_name), (uint8_t *) service_name); 291 } else { 292 if (controller){ 293 de_add_data(service, DE_STRING, strlen(default_avrcp_controller_service_name), (uint8_t *) default_avrcp_controller_service_name); 294 } else { 295 de_add_data(service, DE_STRING, strlen(default_avrcp_target_service_name), (uint8_t *) default_avrcp_target_service_name); 296 } 297 } 298 299 // 0x0100 "Provider Name" 300 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0102); 301 if (service_provider_name){ 302 de_add_data(service, DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name); 303 } else { 304 if (controller){ 305 de_add_data(service, DE_STRING, strlen(default_avrcp_controller_service_provider_name), (uint8_t *) default_avrcp_controller_service_provider_name); 306 } else { 307 de_add_data(service, DE_STRING, strlen(default_avrcp_target_service_provider_name), (uint8_t *) default_avrcp_target_service_provider_name); 308 } 309 } 310 311 // 0x0311 "Supported Features" 312 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); 313 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 314 } 315 316 static avrcp_connection_t * get_avrcp_connection_for_bd_addr(bd_addr_t addr, avrcp_context_t * context){ 317 btstack_linked_list_iterator_t it; 318 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &context->connections); 319 while (btstack_linked_list_iterator_has_next(&it)){ 320 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 321 if (memcmp(addr, connection->remote_addr, 6) != 0) continue; 322 return connection; 323 } 324 return NULL; 325 } 326 327 avrcp_connection_t * get_avrcp_connection_for_l2cap_signaling_cid(uint16_t l2cap_cid, avrcp_context_t * context){ 328 btstack_linked_list_iterator_t it; 329 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &context->connections); 330 while (btstack_linked_list_iterator_has_next(&it)){ 331 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 332 if (connection->l2cap_signaling_cid != l2cap_cid) continue; 333 return connection; 334 } 335 return NULL; 336 } 337 338 avrcp_connection_t * get_avrcp_connection_for_avrcp_cid(uint16_t avrcp_cid, avrcp_context_t * context){ 339 btstack_linked_list_iterator_t it; 340 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &context->connections); 341 while (btstack_linked_list_iterator_has_next(&it)){ 342 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 343 if (connection->avrcp_cid != avrcp_cid) continue; 344 return connection; 345 } 346 return NULL; 347 } 348 349 void avrcp_request_can_send_now(avrcp_connection_t * connection, uint16_t l2cap_cid){ 350 connection->wait_to_send = 1; 351 l2cap_request_can_send_now_event(l2cap_cid); 352 } 353 354 355 static uint16_t avdtp_get_next_avrcp_cid(void){ 356 avrcp_cid_counter++; 357 if (avrcp_cid_counter == 0){ 358 avrcp_cid_counter = 1; 359 } 360 return avrcp_cid_counter; 361 } 362 363 static avrcp_connection_t * avrcp_create_connection(bd_addr_t remote_addr, avrcp_context_t * context){ 364 avrcp_connection_t * connection = btstack_memory_avrcp_connection_get(); 365 memset(connection, 0, sizeof(avrcp_connection_t)); 366 connection->state = AVCTP_CONNECTION_IDLE; 367 connection->transaction_label = 0xFF; 368 connection->avrcp_cid = avdtp_get_next_avrcp_cid(); 369 memcpy(connection->remote_addr, remote_addr, 6); 370 btstack_linked_list_add(&context->connections, (btstack_linked_item_t *) connection); 371 return connection; 372 } 373 374 375 void avrcp_emit_connection_established(btstack_packet_handler_t callback, uint16_t avrcp_cid, bd_addr_t addr, uint8_t status){ 376 if (!callback) return; 377 uint8_t event[12]; 378 int pos = 0; 379 event[pos++] = HCI_EVENT_AVRCP_META; 380 event[pos++] = sizeof(event) - 2; 381 event[pos++] = AVRCP_SUBEVENT_CONNECTION_ESTABLISHED; 382 event[pos++] = status; 383 reverse_bd_addr(addr,&event[pos]); 384 pos += 6; 385 little_endian_store_16(event, pos, avrcp_cid); 386 pos += 2; 387 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 388 } 389 390 void avrcp_emit_connection_closed(btstack_packet_handler_t callback, uint16_t avrcp_cid){ 391 if (!callback) return; 392 uint8_t event[5]; 393 int pos = 0; 394 event[pos++] = HCI_EVENT_AVRCP_META; 395 event[pos++] = sizeof(event) - 2; 396 event[pos++] = AVRCP_SUBEVENT_CONNECTION_RELEASED; 397 little_endian_store_16(event, pos, avrcp_cid); 398 pos += 2; 399 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 400 } 401 402 static void avrcp_handle_sdp_client_query_result(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 403 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid(sdp_query_context->avrcp_cid, sdp_query_context); 404 if (!connection) return; 405 if (connection->state != AVCTP_SIGNALING_W4_SDP_QUERY_COMPLETE) return; 406 UNUSED(packet_type); 407 UNUSED(channel); 408 UNUSED(size); 409 410 des_iterator_t des_list_it; 411 des_iterator_t prot_it; 412 // uint32_t avdtp_remote_uuid = 0; 413 414 switch (hci_event_packet_get_type(packet)){ 415 case SDP_EVENT_QUERY_ATTRIBUTE_VALUE: 416 // Handle new SDP record 417 if (sdp_event_query_attribute_byte_get_record_id(packet) != record_id) { 418 record_id = sdp_event_query_attribute_byte_get_record_id(packet); 419 // log_info("SDP Record: Nr: %d", record_id); 420 } 421 422 if (sdp_event_query_attribute_byte_get_attribute_length(packet) <= attribute_value_buffer_size) { 423 attribute_value[sdp_event_query_attribute_byte_get_data_offset(packet)] = sdp_event_query_attribute_byte_get_data(packet); 424 425 if ((uint16_t)(sdp_event_query_attribute_byte_get_data_offset(packet)+1) == sdp_event_query_attribute_byte_get_attribute_length(packet)) { 426 switch(sdp_event_query_attribute_byte_get_attribute_id(packet)) { 427 case BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST: 428 if (de_get_element_type(attribute_value) != DE_DES) break; 429 for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 430 uint8_t * element = des_iterator_get_element(&des_list_it); 431 if (de_get_element_type(element) != DE_UUID) continue; 432 uint32_t uuid = de_get_uuid32(element); 433 switch (uuid){ 434 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_TARGET: 435 if (sdp_query_context->role == AVRCP_CONTROLLER) { 436 sdp_query_context->role_supported = 1; 437 break; 438 } 439 break; 440 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL: 441 case BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL_CONTROLLER: 442 if (sdp_query_context->role == AVRCP_TARGET) { 443 sdp_query_context->role_supported = 1; 444 break; 445 } 446 break; 447 default: 448 break; 449 } 450 } 451 break; 452 453 case BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST: { 454 // log_info("SDP Attribute: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet)); 455 for (des_iterator_init(&des_list_it, attribute_value); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 456 uint8_t *des_element; 457 uint8_t *element; 458 uint32_t uuid; 459 460 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 461 462 des_element = des_iterator_get_element(&des_list_it); 463 des_iterator_init(&prot_it, des_element); 464 element = des_iterator_get_element(&prot_it); 465 466 if (de_get_element_type(element) != DE_UUID) continue; 467 468 uuid = de_get_uuid32(element); 469 switch (uuid){ 470 case BLUETOOTH_PROTOCOL_L2CAP: 471 if (!des_iterator_has_more(&prot_it)) continue; 472 des_iterator_next(&prot_it); 473 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context->avrcp_l2cap_psm); 474 break; 475 case BLUETOOTH_PROTOCOL_AVCTP: 476 if (!des_iterator_has_more(&prot_it)) continue; 477 des_iterator_next(&prot_it); 478 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context->avrcp_version); 479 break; 480 default: 481 break; 482 } 483 } 484 } 485 break; 486 case BLUETOOTH_ATTRIBUTE_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS: { 487 // log_info("SDP Attribute: 0x%04x", sdp_event_query_attribute_byte_get_attribute_id(packet)); 488 if (de_get_element_type(attribute_value) != DE_DES) break; 489 490 des_iterator_t des_list_0_it; 491 uint8_t *element_0; 492 493 des_iterator_init(&des_list_0_it, attribute_value); 494 element_0 = des_iterator_get_element(&des_list_0_it); 495 496 for (des_iterator_init(&des_list_it, element_0); des_iterator_has_more(&des_list_it); des_iterator_next(&des_list_it)) { 497 uint8_t *des_element; 498 uint8_t *element; 499 uint32_t uuid; 500 501 if (des_iterator_get_type(&des_list_it) != DE_DES) continue; 502 503 des_element = des_iterator_get_element(&des_list_it); 504 des_iterator_init(&prot_it, des_element); 505 element = des_iterator_get_element(&prot_it); 506 507 if (de_get_element_type(element) != DE_UUID) continue; 508 509 uuid = de_get_uuid32(element); 510 switch (uuid){ 511 case BLUETOOTH_PROTOCOL_L2CAP: 512 if (!des_iterator_has_more(&prot_it)) continue; 513 des_iterator_next(&prot_it); 514 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context->avrcp_browsing_l2cap_psm); 515 break; 516 case BLUETOOTH_PROTOCOL_AVCTP: 517 if (!des_iterator_has_more(&prot_it)) continue; 518 des_iterator_next(&prot_it); 519 de_element_get_uint16(des_iterator_get_element(&prot_it), &sdp_query_context->avrcp_browsing_version); 520 break; 521 default: 522 break; 523 } 524 } 525 } 526 break; 527 default: 528 break; 529 } 530 } 531 } else { 532 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)); 533 } 534 break; 535 536 case SDP_EVENT_QUERY_COMPLETE: 537 log_info("General query done with status %d, role supported %d.\n", sdp_event_query_complete_get_status(packet), sdp_query_context->role_supported); 538 if (!sdp_query_context->role_supported || !sdp_query_context->avrcp_l2cap_psm){ 539 connection->state = AVCTP_CONNECTION_IDLE; 540 avrcp_emit_connection_established(sdp_query_context->avrcp_callback, connection->avrcp_cid, connection->remote_addr, SDP_SERVICE_NOT_FOUND); 541 break; 542 } 543 log_info("AVRCP Control PSM 0x%02x, Browsing PSM 0x%02x", sdp_query_context->avrcp_l2cap_psm, sdp_query_context->avrcp_browsing_l2cap_psm); 544 connection->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 545 l2cap_create_channel(sdp_query_context->packet_handler, connection->remote_addr, sdp_query_context->avrcp_l2cap_psm, l2cap_max_mtu(), NULL); 546 break; 547 } 548 } 549 550 void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avrcp_context_t * context){ 551 UNUSED(channel); 552 UNUSED(size); 553 bd_addr_t event_addr; 554 uint16_t local_cid; 555 uint8_t status; 556 avrcp_connection_t * connection = NULL; 557 558 if (packet_type != HCI_EVENT_PACKET) return; 559 560 switch (hci_event_packet_get_type(packet)) { 561 case HCI_EVENT_DISCONNECTION_COMPLETE: 562 // connection closed -> quit test app 563 // status = hci_event_disconnection_complete_get_status(packet); 564 avrcp_emit_connection_closed(context->avrcp_callback, 0); 565 break; 566 case L2CAP_EVENT_INCOMING_CONNECTION: 567 l2cap_event_incoming_connection_get_address(packet, event_addr); 568 local_cid = l2cap_event_incoming_connection_get_local_cid(packet); 569 connection = avrcp_create_connection(event_addr, context); 570 if (!connection) { 571 log_error("Failed to alloc connection structure"); 572 l2cap_decline_connection(local_cid); 573 break; 574 } 575 connection->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 576 connection->l2cap_signaling_cid = local_cid; 577 log_info("L2CAP_EVENT_INCOMING_CONNECTION avrcp_cid 0x%02x, l2cap_signaling_cid 0x%02x", connection->avrcp_cid, connection->l2cap_signaling_cid); 578 l2cap_accept_connection(local_cid); 579 break; 580 581 case L2CAP_EVENT_CHANNEL_OPENED: 582 l2cap_event_channel_opened_get_address(packet, event_addr); 583 status = l2cap_event_channel_opened_get_status(packet); 584 local_cid = l2cap_event_channel_opened_get_local_cid(packet); 585 586 connection = get_avrcp_connection_for_bd_addr(event_addr, context); 587 if (!connection){ 588 log_error("Failed to alloc AVRCP connection structure"); 589 avrcp_emit_connection_established(context->avrcp_callback, connection->avrcp_cid, event_addr, BTSTACK_MEMORY_ALLOC_FAILED); 590 l2cap_disconnect(local_cid, 0); // reason isn't used 591 break; 592 } 593 if (status != ERROR_CODE_SUCCESS){ 594 log_info("L2CAP connection to connection %s failed. status code 0x%02x", bd_addr_to_str(event_addr), status); 595 avrcp_emit_connection_established(context->avrcp_callback, connection->avrcp_cid, event_addr, status); 596 btstack_linked_list_remove(&context->connections, (btstack_linked_item_t*) connection); 597 btstack_memory_avrcp_connection_free(connection); 598 break; 599 } 600 connection->l2cap_signaling_cid = local_cid; 601 log_info("L2CAP_EVENT_CHANNEL_OPENED avrcp_cid 0x%02x, l2cap_signaling_cid 0x%02x", connection->avrcp_cid, connection->l2cap_signaling_cid); 602 connection->state = AVCTP_CONNECTION_OPENED; 603 avrcp_emit_connection_established(context->avrcp_callback, connection->avrcp_cid, event_addr, ERROR_CODE_SUCCESS); 604 break; 605 606 case L2CAP_EVENT_CHANNEL_CLOSED: 607 // data: event (8), len(8), channel (16) 608 local_cid = l2cap_event_channel_closed_get_local_cid(packet); 609 connection = get_avrcp_connection_for_l2cap_signaling_cid(local_cid, context); 610 if (connection){ 611 avrcp_emit_connection_closed(context->avrcp_callback, connection->avrcp_cid); 612 // free connection 613 btstack_linked_list_remove(&context->connections, (btstack_linked_item_t*) connection); 614 btstack_memory_avrcp_connection_free(connection); 615 break; 616 } 617 break; 618 default: 619 break; 620 } 621 } 622 623 uint8_t avrcp_connect(bd_addr_t bd_addr, avrcp_context_t * context, uint16_t * avrcp_cid){ 624 avrcp_connection_t * connection = get_avrcp_connection_for_bd_addr(bd_addr, context); 625 if (connection){ 626 return ERROR_CODE_COMMAND_DISALLOWED; 627 } 628 connection = avrcp_create_connection(bd_addr, context); 629 if (!connection){ 630 log_error("avrcp: could not allocate connection struct."); 631 return BTSTACK_MEMORY_ALLOC_FAILED; 632 } 633 634 if (!avrcp_cid) return L2CAP_LOCAL_CID_DOES_NOT_EXIST; 635 636 *avrcp_cid = connection->avrcp_cid; 637 connection->state = AVCTP_SIGNALING_W4_SDP_QUERY_COMPLETE; 638 639 context->avrcp_l2cap_psm = 0; 640 context->avrcp_version = 0; 641 context->avrcp_cid = connection->avrcp_cid; 642 643 sdp_query_context = context; 644 645 sdp_client_query_uuid16(&avrcp_handle_sdp_client_query_result, bd_addr, BLUETOOTH_PROTOCOL_AVCTP); 646 return ERROR_CODE_SUCCESS; 647 } 648