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_browsing_target.c" 39 40 #include <stdint.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <inttypes.h> 45 #include "btstack.h" 46 #include "classic/avrcp.h" 47 #include "classic/avrcp_browsing_target.h" 48 49 #define PSM_AVCTP_BROWSING 0x001b 50 51 static void avrcp_browser_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avrcp_context_t * context); 52 static void avrcp_browsing_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 53 54 static void avrcp_browsing_target_request_can_send_now(avrcp_browsing_connection_t * connection, uint16_t l2cap_cid){ 55 connection->wait_to_send = 1; 56 l2cap_request_can_send_now_event(l2cap_cid); 57 } 58 59 static int avrcp_browsing_target_handle_can_send_now(avrcp_browsing_connection_t * connection){ 60 61 int pos = 0; 62 l2cap_reserve_packet_buffer(); 63 uint8_t * packet = l2cap_get_outgoing_buffer(); 64 65 // transport header 66 // Transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 67 68 // TODO: check for fragmentation 69 connection->packet_type = AVRCP_SINGLE_PACKET; 70 printf("ttransaction %d \n", connection->transaction_label); 71 packet[pos++] = (connection->transaction_label << 4) | (connection->packet_type << 2) | (AVRCP_RESPONSE_FRAME << 1) | 0; 72 // Profile IDentifier (PID) 73 packet[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 74 packet[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 75 // command_type 76 // packet[pos++] = connection->command_type; 77 // // subunit_type | subunit ID 78 // packet[pos++] = (connection->subunit_type << 3) | connection->subunit_id; 79 // // opcode 80 // packet[pos++] = (uint8_t)connection->command_opcode; 81 // operands 82 // company id is 3 bytes long 83 // big_endian_store_24(packet, pos, BT_SIG_COMPANY_ID); 84 // pos += 3; 85 memcpy(packet+pos, connection->cmd_operands, connection->cmd_operands_length); 86 // printf_hexdump(packet+pos, connection->cmd_operands_length); 87 88 pos += connection->cmd_operands_length; 89 connection->wait_to_send = 0; 90 printf(" send reject \n"); 91 printf_hexdump(packet, pos); 92 return l2cap_send_prepared(connection->l2cap_browsing_cid, pos); 93 } 94 95 96 static uint8_t avrcp_browsing_target_response_reject(avrcp_browsing_connection_t * connection, avrcp_status_code_t status){ 97 // AVRCP_CTYPE_RESPONSE_REJECTED 98 int pos = 0; 99 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GENERAL_REJECT; 100 // connection->cmd_operands[pos++] = 0; 101 // param length 102 big_endian_store_16(connection->cmd_operands, pos, 1); 103 pos += 2; 104 connection->cmd_operands[pos++] = status; 105 connection->cmd_operands_length = 4; 106 connection->state = AVCTP_W2_SEND_RESPONSE; 107 avrcp_browsing_target_request_can_send_now(connection, connection->l2cap_browsing_cid); 108 return ERROR_CODE_SUCCESS; 109 } 110 111 static avrcp_connection_t * get_avrcp_connection_for_browsing_cid(uint16_t browsing_cid, avrcp_context_t * context){ 112 btstack_linked_list_iterator_t it; 113 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &context->connections); 114 while (btstack_linked_list_iterator_has_next(&it)){ 115 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 116 if (connection->avrcp_browsing_cid != browsing_cid) continue; 117 return connection; 118 } 119 return NULL; 120 } 121 122 static avrcp_connection_t * get_avrcp_connection_for_browsing_l2cap_cid(uint16_t browsing_l2cap_cid, avrcp_context_t * context){ 123 btstack_linked_list_iterator_t it; 124 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &context->connections); 125 while (btstack_linked_list_iterator_has_next(&it)){ 126 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 127 if (connection->browsing_connection && connection->browsing_connection->l2cap_browsing_cid != browsing_l2cap_cid) continue; 128 return connection; 129 } 130 return NULL; 131 } 132 133 static avrcp_browsing_connection_t * get_avrcp_browsing_connection_for_l2cap_cid(uint16_t l2cap_cid, avrcp_context_t * context){ 134 btstack_linked_list_iterator_t it; 135 btstack_linked_list_iterator_init(&it, (btstack_linked_list_t *) &context->connections); 136 while (btstack_linked_list_iterator_has_next(&it)){ 137 avrcp_connection_t * connection = (avrcp_connection_t *)btstack_linked_list_iterator_next(&it); 138 if (connection->browsing_connection && connection->browsing_connection->l2cap_browsing_cid != l2cap_cid) continue; 139 return connection->browsing_connection; 140 } 141 return NULL; 142 } 143 144 static void avrcp_browsing_target_emit_get_folder_items(btstack_packet_handler_t callback, uint16_t browsing_cid, avrcp_browsing_connection_t * connection){ 145 if (!callback) return; 146 uint8_t event[10]; 147 int pos = 0; 148 event[pos++] = HCI_EVENT_AVRCP_META; 149 event[pos++] = sizeof(event) - 2; 150 event[pos++] = AVRCP_SUBEVENT_BROWSING_GET_FOLDER_ITEMS; 151 little_endian_store_16(event, pos, browsing_cid); 152 pos += 2; 153 event[pos++] = connection->scope; 154 big_endian_store_32(event, pos, connection->attr_bitmap); 155 pos += 4; 156 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 157 } 158 159 static void avrcp_emit_browsing_connection_established(btstack_packet_handler_t callback, uint16_t browsing_cid, bd_addr_t addr, uint8_t status){ 160 if (!callback) return; 161 uint8_t event[12]; 162 int pos = 0; 163 event[pos++] = HCI_EVENT_AVRCP_META; 164 event[pos++] = sizeof(event) - 2; 165 event[pos++] = AVRCP_SUBEVENT_BROWSING_CONNECTION_ESTABLISHED; 166 event[pos++] = status; 167 reverse_bd_addr(addr,&event[pos]); 168 pos += 6; 169 little_endian_store_16(event, pos, browsing_cid); 170 pos += 2; 171 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 172 } 173 174 static void avrcp_emit_incoming_browsing_connection(btstack_packet_handler_t callback, uint16_t browsing_cid, bd_addr_t addr){ 175 if (!callback) return; 176 uint8_t event[11]; 177 int pos = 0; 178 event[pos++] = HCI_EVENT_AVRCP_META; 179 event[pos++] = sizeof(event) - 2; 180 event[pos++] = AVRCP_SUBEVENT_INCOMING_BROWSING_CONNECTION; 181 reverse_bd_addr(addr,&event[pos]); 182 pos += 6; 183 little_endian_store_16(event, pos, browsing_cid); 184 pos += 2; 185 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 186 } 187 188 static void avrcp_emit_browsing_connection_closed(btstack_packet_handler_t callback, uint16_t browsing_cid){ 189 if (!callback) return; 190 uint8_t event[5]; 191 int pos = 0; 192 event[pos++] = HCI_EVENT_AVRCP_META; 193 event[pos++] = sizeof(event) - 2; 194 event[pos++] = AVRCP_SUBEVENT_BROWSING_CONNECTION_RELEASED; 195 little_endian_store_16(event, pos, browsing_cid); 196 pos += 2; 197 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 198 } 199 200 static avrcp_browsing_connection_t * avrcp_browsing_create_connection(avrcp_connection_t * avrcp_connection){ 201 avrcp_browsing_connection_t * connection = btstack_memory_avrcp_browsing_connection_get(); 202 memset(connection, 0, sizeof(avrcp_browsing_connection_t)); 203 connection->state = AVCTP_CONNECTION_IDLE; 204 connection->transaction_label = 0xFF; 205 avrcp_connection->avrcp_browsing_cid = avrcp_get_next_cid(); 206 avrcp_connection->browsing_connection = connection; 207 return connection; 208 } 209 210 static uint8_t avrcp_browsing_connect(bd_addr_t remote_addr, avrcp_context_t * context, uint8_t * ertm_buffer, uint32_t size, l2cap_ertm_config_t * ertm_config, uint16_t * browsing_cid){ 211 avrcp_connection_t * avrcp_connection = get_avrcp_connection_for_bd_addr(remote_addr, context); 212 213 if (!avrcp_connection){ 214 log_error("avrcp: there is no previously established AVRCP controller connection."); 215 return ERROR_CODE_COMMAND_DISALLOWED; 216 } 217 218 avrcp_browsing_connection_t * connection = avrcp_connection->browsing_connection; 219 if (connection){ 220 log_error(" avrcp_browsing_connect connection exists."); 221 return ERROR_CODE_SUCCESS; 222 } 223 224 connection = avrcp_browsing_create_connection(avrcp_connection); 225 if (!connection){ 226 log_error("avrcp: could not allocate connection struct."); 227 return BTSTACK_MEMORY_ALLOC_FAILED; 228 } 229 230 if (!browsing_cid) return L2CAP_LOCAL_CID_DOES_NOT_EXIST; 231 232 *browsing_cid = avrcp_connection->avrcp_browsing_cid; 233 connection->ertm_buffer = ertm_buffer; 234 connection->ertm_buffer_size = size; 235 avrcp_connection->browsing_connection = connection; 236 237 memcpy(&connection->ertm_config, ertm_config, sizeof(l2cap_ertm_config_t)); 238 239 return l2cap_create_ertm_channel(avrcp_browsing_target_packet_handler, remote_addr, avrcp_connection->browsing_l2cap_psm, 240 &connection->ertm_config, connection->ertm_buffer, connection->ertm_buffer_size, NULL); 241 242 } 243 244 static void avrcp_browser_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size, avrcp_context_t * context){ 245 UNUSED(channel); 246 UNUSED(size); 247 bd_addr_t event_addr; 248 uint16_t local_cid; 249 uint8_t status; 250 avrcp_browsing_connection_t * browsing_connection = NULL; 251 avrcp_connection_t * avrcp_connection = NULL; 252 253 if (packet_type != HCI_EVENT_PACKET) return; 254 255 switch (hci_event_packet_get_type(packet)) { 256 case HCI_EVENT_DISCONNECTION_COMPLETE: 257 avrcp_emit_browsing_connection_closed(context->browsing_avrcp_callback, 0); 258 break; 259 case L2CAP_EVENT_INCOMING_CONNECTION: 260 l2cap_event_incoming_connection_get_address(packet, event_addr); 261 local_cid = l2cap_event_incoming_connection_get_local_cid(packet); 262 avrcp_connection = get_avrcp_connection_for_bd_addr(event_addr, context); 263 if (!avrcp_connection) { 264 log_error("No previously created AVRCP controller connections"); 265 l2cap_decline_connection(local_cid); 266 break; 267 } 268 browsing_connection = avrcp_browsing_create_connection(avrcp_connection); 269 browsing_connection->l2cap_browsing_cid = local_cid; 270 browsing_connection->state = AVCTP_CONNECTION_W4_ERTM_CONFIGURATION; 271 log_info("Emit AVRCP_SUBEVENT_INCOMING_BROWSING_CONNECTION browsing_cid 0x%02x, l2cap_signaling_cid 0x%02x\n", avrcp_connection->avrcp_browsing_cid, browsing_connection->l2cap_browsing_cid); 272 avrcp_emit_incoming_browsing_connection(context->browsing_avrcp_callback, avrcp_connection->avrcp_browsing_cid, event_addr); 273 break; 274 275 case L2CAP_EVENT_CHANNEL_OPENED: 276 l2cap_event_channel_opened_get_address(packet, event_addr); 277 status = l2cap_event_channel_opened_get_status(packet); 278 local_cid = l2cap_event_channel_opened_get_local_cid(packet); 279 280 avrcp_connection = get_avrcp_connection_for_bd_addr(event_addr, context); 281 if (!avrcp_connection){ 282 log_error("Failed to find AVRCP connection for bd_addr %s", bd_addr_to_str(event_addr)); 283 avrcp_emit_browsing_connection_established(context->browsing_avrcp_callback, local_cid, event_addr, L2CAP_LOCAL_CID_DOES_NOT_EXIST); 284 l2cap_disconnect(local_cid, 0); // reason isn't used 285 break; 286 } 287 288 browsing_connection = avrcp_connection->browsing_connection; 289 if (status != ERROR_CODE_SUCCESS){ 290 log_info("L2CAP connection to connection %s failed. status code 0x%02x", bd_addr_to_str(event_addr), status); 291 avrcp_emit_browsing_connection_established(context->browsing_avrcp_callback, avrcp_connection->avrcp_browsing_cid, event_addr, status); 292 btstack_memory_avrcp_browsing_connection_free(browsing_connection); 293 avrcp_connection->browsing_connection = NULL; 294 break; 295 } 296 if (browsing_connection->state != AVCTP_CONNECTION_W4_L2CAP_CONNECTED) break; 297 298 browsing_connection->l2cap_browsing_cid = local_cid; 299 300 log_info("L2CAP_EVENT_CHANNEL_OPENED browsing cid 0x%02x, l2cap cid 0x%02x", avrcp_connection->avrcp_browsing_cid, browsing_connection->l2cap_browsing_cid); 301 browsing_connection->state = AVCTP_CONNECTION_OPENED; 302 avrcp_emit_browsing_connection_established(context->browsing_avrcp_callback, avrcp_connection->avrcp_browsing_cid, event_addr, ERROR_CODE_SUCCESS); 303 break; 304 305 case L2CAP_EVENT_CHANNEL_CLOSED: 306 // data: event (8), len(8), channel (16) 307 local_cid = l2cap_event_channel_closed_get_local_cid(packet); 308 avrcp_connection = get_avrcp_connection_for_browsing_l2cap_cid(local_cid, context); 309 310 if (avrcp_connection && avrcp_connection->browsing_connection){ 311 avrcp_emit_browsing_connection_closed(context->browsing_avrcp_callback, avrcp_connection->avrcp_browsing_cid); 312 // free connection 313 btstack_memory_avrcp_browsing_connection_free(avrcp_connection->browsing_connection); 314 avrcp_connection->browsing_connection = NULL; 315 break; 316 } 317 break; 318 default: 319 break; 320 } 321 } 322 323 324 static void avrcp_browsing_target_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 325 avrcp_browsing_connection_t * browsing_connection; 326 327 switch (packet_type) { 328 case L2CAP_DATA_PACKET:{ 329 browsing_connection = get_avrcp_browsing_connection_for_l2cap_cid(channel, &avrcp_target_context); 330 if (!browsing_connection) break; 331 printf_hexdump(packet,size); 332 333 int pos = 0; 334 uint8_t transport_header = packet[pos++]; 335 // Transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 336 browsing_connection->transaction_label = transport_header >> 4; 337 avrcp_packet_type_t avctp_packet_type = (transport_header & 0x0F) >> 2; 338 printf("L2CAP_DATA_PACKET, transaction_label %d\n", browsing_connection->transaction_label); 339 switch (avctp_packet_type){ 340 case AVRCP_SINGLE_PACKET: 341 case AVRCP_START_PACKET: 342 // uint8_t frame_type = (transport_header & 0x03) >> 1; 343 // uint8_t ipid = transport_header & 0x01; 344 browsing_connection->subunit_type = packet[pos++] >> 2; 345 browsing_connection->subunit_id = 0; 346 browsing_connection->command_opcode = packet[pos++]; 347 // printf("subunit_id") 348 // pos += 2; 349 browsing_connection->num_packets = 1; 350 if (avctp_packet_type == AVRCP_START_PACKET){ 351 browsing_connection->num_packets = packet[pos++]; 352 } 353 browsing_connection->pdu_id = packet[pos++]; 354 // uint16_t length = big_endian_read_16(packet, pos); 355 // pos += 2; 356 break; 357 default: 358 break; 359 } 360 printf("pdu id 0x%2x\n", browsing_connection->pdu_id); 361 // uint32_t i; 362 switch(browsing_connection->pdu_id){ 363 case AVRCP_PDU_ID_GET_FOLDER_ITEMS: 364 printf("\n"); 365 browsing_connection->scope = packet[pos++]; 366 browsing_connection->start_item = big_endian_read_32(packet, pos); 367 pos += 4; 368 browsing_connection->end_item = big_endian_read_32(packet, pos); 369 pos += 4; 370 uint8_t attr_count = packet[pos++]; 371 372 while (attr_count){ 373 uint32_t attr_id = big_endian_read_32(packet, pos); 374 pos += 4; 375 browsing_connection->attr_bitmap |= (1 << attr_id); 376 attr_count--; 377 } 378 avrcp_browsing_target_emit_get_folder_items(avrcp_target_context.browsing_avrcp_callback, channel, browsing_connection); 379 380 break; 381 default: 382 printf(" not parsed pdu ID 0x%02x\n", browsing_connection->pdu_id); 383 break; 384 } 385 386 switch (avctp_packet_type){ 387 case AVRCP_SINGLE_PACKET: 388 case AVRCP_END_PACKET: 389 printf("send avrcp_browsing_target_response_reject\n"); 390 browsing_connection->state = AVCTP_CONNECTION_OPENED; 391 avrcp_browsing_target_response_reject(browsing_connection, AVRCP_STATUS_INVALID_COMMAND); 392 // avrcp_browsing_target_emit_done_with_uid_counter(avrcp_target_context.browsing_avrcp_callback, channel, browsing_connection->uid_counter, browsing_connection->browsing_status, ERROR_CODE_SUCCESS); 393 break; 394 default: 395 break; 396 } 397 // printf(" paket done\n"); 398 break; 399 } 400 401 case HCI_EVENT_PACKET: 402 switch (hci_event_packet_get_type(packet)){ 403 case L2CAP_EVENT_CAN_SEND_NOW: 404 browsing_connection = get_avrcp_browsing_connection_for_l2cap_cid(channel, &avrcp_target_context); 405 if (!browsing_connection) break; 406 if (browsing_connection->state != AVCTP_W2_SEND_RESPONSE) return; 407 browsing_connection->state = AVCTP_CONNECTION_OPENED; 408 avrcp_browsing_target_handle_can_send_now(browsing_connection); 409 break; 410 default: 411 avrcp_browser_packet_handler(packet_type, channel, packet, size, &avrcp_target_context); 412 break; 413 } 414 break; 415 416 default: 417 break; 418 } 419 } 420 421 void avrcp_browsing_target_init(void){ 422 avrcp_target_context.browsing_packet_handler = avrcp_browsing_target_packet_handler; 423 l2cap_register_service(&avrcp_browsing_target_packet_handler, PSM_AVCTP_BROWSING, 0xffff, LEVEL_0); 424 } 425 426 void avrcp_browsing_target_register_packet_handler(btstack_packet_handler_t callback){ 427 if (callback == NULL){ 428 log_error("avrcp_browsing_target_register_packet_handler called with NULL callback"); 429 return; 430 } 431 avrcp_target_context.browsing_avrcp_callback = callback; 432 } 433 434 uint8_t avrcp_browsing_target_connect(bd_addr_t bd_addr, uint8_t * ertm_buffer, uint32_t size, l2cap_ertm_config_t * ertm_config, uint16_t * avrcp_browsing_cid){ 435 return avrcp_browsing_connect(bd_addr, &avrcp_target_context, ertm_buffer, size, ertm_config, avrcp_browsing_cid); 436 } 437 438 uint8_t avrcp_browsing_target_disconnect(uint16_t avrcp_browsing_cid){ 439 avrcp_connection_t * avrcp_connection = get_avrcp_connection_for_browsing_cid(avrcp_browsing_cid, &avrcp_target_context); 440 if (!avrcp_connection){ 441 log_error("avrcp_browsing_target_disconnect: could not find a connection."); 442 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 443 } 444 if (avrcp_connection->browsing_connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 445 446 l2cap_disconnect(avrcp_connection->browsing_connection->l2cap_browsing_cid, 0); 447 return ERROR_CODE_SUCCESS; 448 } 449 450 uint8_t avrcp_browsing_target_configure_incoming_connection(uint16_t avrcp_browsing_cid, uint8_t * ertm_buffer, uint32_t size, l2cap_ertm_config_t * ertm_config){ 451 avrcp_connection_t * avrcp_connection = get_avrcp_connection_for_browsing_cid(avrcp_browsing_cid, &avrcp_target_context); 452 if (!avrcp_connection){ 453 log_error("avrcp_browsing_decline_incoming_connection: could not find a connection."); 454 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 455 } 456 if (!avrcp_connection->browsing_connection){ 457 log_error("avrcp_browsing_decline_incoming_connection: no browsing connection."); 458 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 459 } 460 461 if (avrcp_connection->browsing_connection->state != AVCTP_CONNECTION_W4_ERTM_CONFIGURATION){ 462 log_error("avrcp_browsing_decline_incoming_connection: browsing connection in a wrong state."); 463 return ERROR_CODE_COMMAND_DISALLOWED; 464 } 465 466 avrcp_connection->browsing_connection->state = AVCTP_CONNECTION_W4_L2CAP_CONNECTED; 467 avrcp_connection->browsing_connection->ertm_buffer = ertm_buffer; 468 avrcp_connection->browsing_connection->ertm_buffer_size = size; 469 memcpy(&avrcp_connection->browsing_connection->ertm_config, ertm_config, sizeof(l2cap_ertm_config_t)); 470 l2cap_accept_ertm_connection(avrcp_connection->browsing_connection->l2cap_browsing_cid, &avrcp_connection->browsing_connection->ertm_config, avrcp_connection->browsing_connection->ertm_buffer, avrcp_connection->browsing_connection->ertm_buffer_size); 471 return ERROR_CODE_SUCCESS; 472 } 473 474 uint8_t avrcp_browsing_target_decline_incoming_connection(uint16_t avrcp_browsing_cid){ 475 avrcp_connection_t * avrcp_connection = get_avrcp_connection_for_browsing_cid(avrcp_browsing_cid, &avrcp_target_context); 476 if (!avrcp_connection){ 477 log_error("avrcp_browsing_decline_incoming_connection: could not find a connection."); 478 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 479 } 480 if (!avrcp_connection->browsing_connection) return ERROR_CODE_SUCCESS; 481 if (avrcp_connection->browsing_connection->state > AVCTP_CONNECTION_W4_ERTM_CONFIGURATION) return ERROR_CODE_COMMAND_DISALLOWED; 482 483 l2cap_decline_connection(avrcp_connection->browsing_connection->l2cap_browsing_cid); 484 // free connection 485 btstack_memory_avrcp_browsing_connection_free(avrcp_connection->browsing_connection); 486 avrcp_connection->browsing_connection = NULL; 487 return ERROR_CODE_SUCCESS; 488 } 489