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_client.c" 39 40 /* 41 * avrcp_browsing_client.c 42 */ 43 44 // ***************************************************************************** 45 /* EXAMPLE_START(avrcp_browsing_client): Browse media players and media information on a remote device. 46 * 47 * @text This example demonstrates how to use the AVRCP Controller Browsing service to 48 * browse madia players and media information on a remote AVRCP Source device. 49 * 50 * @text To test with a remote device, e.g. a mobile phone, 51 * pair from the remote device with the demo, then use the UI for browsing. If HAVE_BTSTACK_STDIN is set, 52 * press SPACE on the console to show the available AVDTP and AVRCP commands. 53 * 54 */ 55 // ***************************************************************************** 56 57 #include <stdint.h> 58 #include <inttypes.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 63 #include "btstack.h" 64 65 #ifdef HAVE_BTSTACK_STDIN 66 #include "btstack_stdin.h" 67 #endif 68 69 #define AVRCP_BROWSING_ENABLED 70 71 #define AVRCP_BROWSING_MAX_PLAYERS 10 72 #define AVRCP_BROWSING_MAX_FOLDERS 10 73 #define AVRCP_BROWSING_MAX_FOLDER_NAME_LEN 30 74 75 #ifdef HAVE_BTSTACK_STDIN 76 // mac 2011: static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; 77 // pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5}; 78 // mac 2013: 79 // static const char * device_addr_string = "84:38:35:65:d1:15"; 80 // iPhone 5S: static const char * device_addr_string = "54:E4:3A:26:A2:39"; 81 // phone 2013: 82 // static const char * device_addr_string = "B0:34:95:CB:97:C4"; 83 // iPod 84 // static const char * device_addr_string = "B0:34:95:CB:97:C4"; 85 // iPhone 86 static const char * device_addr_string = "6C:72:E7:10:22:EE"; 87 88 static bd_addr_t device_addr; 89 #endif 90 91 static uint16_t avrcp_cid = 0; 92 static bool avrcp_connected = false; 93 94 static uint16_t browsing_cid = 0; 95 static uint8_t avrcp_browsing_connected = 0; 96 static uint8_t sdp_avrcp_browsing_controller_service_buffer[200]; 97 98 static bool browsing_query_active = false; 99 static avrcp_media_item_context_t media_item_context; 100 101 typedef struct { 102 uint16_t charset; 103 uint8_t depth; 104 uint16_t name_len; 105 char name[AVRCP_BROWSING_MAX_FOLDER_NAME_LEN]; 106 } avrcp_browsing_root_folder_t; 107 108 typedef struct { 109 uint8_t uid[8]; 110 uint16_t name_len; 111 char name[AVRCP_BROWSING_MAX_FOLDER_NAME_LEN]; 112 } avrcp_browsing_folders_t; 113 114 static uint8_t parent_folder_set = 0; 115 static uint8_t parent_folder_uid[8]; 116 static char parent_folder_name[AVRCP_BROWSING_MAX_FOLDER_NAME_LEN]; 117 static avrcp_browsing_folders_t folders[AVRCP_BROWSING_MAX_FOLDERS]; 118 static int folder_index = -1; 119 static uint16_t players[AVRCP_BROWSING_MAX_PLAYERS]; 120 static int player_index = -1; 121 static uint16_t browsing_uid_counter = 0; 122 123 static btstack_packet_callback_registration_t hci_event_callback_registration; 124 125 static uint8_t ertm_buffer[10000]; 126 static l2cap_ertm_config_t ertm_config = { 127 1, // ertm mandatory 128 2, // max transmit, some tests require > 1 129 2000, 130 12000, 131 144, // l2cap ertm mtu 132 4, 133 4, 134 0, // No FCS 135 }; 136 137 static inline int next_index(int * index, int max_value){ 138 if ((*index) < max_value){ 139 (*index)++; 140 } else { 141 (*index) = 0; 142 } 143 return (*index); 144 } 145 146 static int next_folder_index(void){ 147 return next_index(&folder_index, AVRCP_BROWSING_MAX_FOLDERS); 148 } 149 150 static int next_player_index(void){ 151 return next_index(&player_index, AVRCP_BROWSING_MAX_PLAYERS); 152 } 153 154 155 /* @section Main Application Setup 156 * 157 * @text The Listing MainConfiguration shows how to setup AVRCP Controller Browsing service. 158 * To announce AVRCP Controller Browsing service, you need to create corresponding 159 * SDP record and register it with the SDP service. 160 * You'll also need to register several packet handlers: 161 * - stdin_process callback - used to trigger AVRCP commands, such are get media players, playlists, albums, etc. Requires HAVE_BTSTACK_STDIN. 162 * - avrcp_browsing_packet_handler - used to receive answers for AVRCP commands. 163 * 164 */ 165 166 /* LISTING_START(MainConfiguration): Setup Audio Sink and AVRCP Controller services */ 167 static void avrcp_browsing_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 168 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 169 170 #ifdef HAVE_BTSTACK_STDIN 171 static void stdin_process(char cmd); 172 #endif 173 174 175 int btstack_main(int argc, const char * argv[]); 176 int btstack_main(int argc, const char * argv[]){ 177 (void)argc; 178 (void)argv; 179 180 // Initialize L2CAP. 181 l2cap_init(); 182 183 // Initialize AVRCP service. 184 avrcp_init(); 185 // Initialize AVRCP Controller & Target Service. 186 avrcp_controller_init(); 187 avrcp_target_init(); 188 189 avrcp_register_packet_handler(&avrcp_packet_handler); 190 avrcp_controller_register_packet_handler(&avrcp_packet_handler); 191 avrcp_target_register_packet_handler(&avrcp_packet_handler); 192 193 // Initialize AVRCP Browsing Service. 194 avrcp_browsing_init(); 195 avrcp_browsing_controller_init(); 196 avrcp_browsing_target_init(); 197 198 // Register for HCI events. 199 avrcp_browsing_controller_register_packet_handler(&avrcp_browsing_packet_handler); 200 avrcp_browsing_target_register_packet_handler(&avrcp_browsing_packet_handler); 201 avrcp_browsing_register_packet_handler(&avrcp_browsing_packet_handler); 202 203 // Initialize SDP. 204 sdp_init(); 205 206 // Create AVRCP service record and register it with SDP. 207 memset(sdp_avrcp_browsing_controller_service_buffer, 0, sizeof(sdp_avrcp_browsing_controller_service_buffer)); 208 209 uint16_t supported_features = (1 << AVRCP_CONTROLLER_SUPPORTED_FEATURE_CATEGORY_PLAYER_OR_RECORDER); 210 #ifdef AVRCP_BROWSING_ENABLED 211 supported_features |= (1 << AVRCP_CONTROLLER_SUPPORTED_FEATURE_BROWSING); 212 #endif 213 avrcp_controller_create_sdp_record(sdp_avrcp_browsing_controller_service_buffer, 0x10001, supported_features, NULL, NULL); 214 sdp_register_service(sdp_avrcp_browsing_controller_service_buffer); 215 216 // Set local name with a template Bluetooth address, that will be automatically 217 // replaced with a actual address once it is available, i.e. when BTstack boots 218 // up and starts talking to a Bluetooth module. 219 gap_set_local_name("AVRCP Browsing Client 00:00:00:00:00:00"); 220 gap_discoverable_control(1); 221 gap_set_class_of_device(0x200408); 222 223 // Register for HCI events. 224 hci_event_callback_registration.callback = &avrcp_browsing_packet_handler; 225 hci_add_event_handler(&hci_event_callback_registration); 226 227 228 #ifdef HAVE_BTSTACK_STDIN 229 // Parse human readable Bluetooth address. 230 sscanf_bd_addr(device_addr_string, device_addr); 231 btstack_stdin_setup(stdin_process); 232 #endif 233 printf("Starting BTstack ...\n"); 234 hci_power_control(HCI_POWER_ON); 235 return 0; 236 } 237 /* LISTING_END */ 238 239 static void avrcp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 240 UNUSED(channel); 241 UNUSED(size); 242 uint16_t local_cid; 243 uint8_t status = 0xFF; 244 bd_addr_t adress; 245 246 if (packet_type != HCI_EVENT_PACKET) return; 247 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 248 switch (packet[2]){ 249 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 250 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 251 status = avrcp_subevent_connection_established_get_status(packet); 252 if (status != ERROR_CODE_SUCCESS){ 253 printf("AVRCP: Connection failed: status 0x%02x\n", status); 254 avrcp_cid = 0; 255 return; 256 } 257 258 avrcp_cid = local_cid; 259 avrcp_connected = true; 260 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 261 printf("AVRCP: Connected to %s, cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 262 return; 263 } 264 265 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 266 printf("AVRCP: Channel released: cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 267 avrcp_cid = 0; 268 avrcp_connected = false; 269 return; 270 default: 271 break; 272 } 273 } 274 static void avrcp_browsing_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 275 UNUSED(channel); 276 int pos; 277 278 switch(packet_type){ 279 case AVRCP_BROWSING_DATA_PACKET: 280 pos = 0; 281 browsing_query_active = true; 282 avrcp_browsing_item_type_t data_type = (avrcp_browsing_item_type_t)packet[pos++]; 283 pos += 2; // length 284 285 switch (data_type){ 286 case AVRCP_BROWSING_MEDIA_ROOT_FOLDER:{ 287 avrcp_browsing_root_folder_t root_folder; 288 root_folder.charset = big_endian_read_16(packet, pos); 289 pos += 2; 290 root_folder.depth = packet[pos++]; 291 root_folder.name_len = big_endian_read_16(packet, pos); 292 pos += 2; 293 294 memset(root_folder.name, 0, AVRCP_BROWSING_MAX_FOLDER_NAME_LEN); 295 root_folder.name_len = btstack_min(big_endian_read_16(packet, pos), AVRCP_BROWSING_MAX_FOLDER_NAME_LEN - 1); 296 memcpy(root_folder.name, packet+pos, root_folder.name_len); 297 printf("Found root folder: name %s, depth %d \n", (char *)root_folder.name, root_folder.depth); 298 break; 299 } 300 case AVRCP_BROWSING_MEDIA_PLAYER_ITEM:{ 301 printf("Received media player: "); 302 uint16_t player_id = big_endian_read_16(packet, pos); 303 pos += 2; 304 avrcp_browsing_media_player_major_type_t major_type = packet[pos++]; 305 avrcp_browsing_media_player_subtype_t subtype = big_endian_read_32(packet, pos); 306 pos += 4; 307 uint8_t status = packet[pos++]; 308 uint8_t feature_bitmask[16]; 309 memcpy(feature_bitmask, packet, 16); 310 pos += 16; 311 printf("player ID 0x%04x, major_type %d, subtype %d, status %d\n", player_id, major_type, subtype, status); 312 players[next_player_index()] = player_id; 313 break; 314 } 315 case AVRCP_BROWSING_FOLDER_ITEM:{ 316 int index = next_folder_index(); 317 // printf("Found folder [%d]: ", index); 318 memcpy(folders[index].uid, packet+pos, 8); 319 uint32_t folder_uid_high = big_endian_read_32(packet, pos); 320 pos += 4; 321 uint32_t folder_uid_low = big_endian_read_32(packet, pos); 322 pos += 4; 323 avrcp_browsing_folder_type_t folder_type = packet[pos++]; 324 uint8_t is_playable = packet[pos++]; 325 uint16_t charset = big_endian_read_16(packet, pos); 326 pos += 2; 327 uint16_t displayable_name_length = big_endian_read_16(packet, pos); 328 pos += 2; 329 330 char value[AVRCP_BROWSING_MAX_FOLDER_NAME_LEN]; 331 332 memset(value, 0, AVRCP_BROWSING_MAX_FOLDER_NAME_LEN); 333 uint16_t value_len = btstack_min(displayable_name_length, AVRCP_BROWSING_MAX_FOLDER_NAME_LEN - 1); 334 memcpy(value, packet+pos, value_len); 335 336 printf("UID 0x%08" PRIx32 "%08" PRIx32 ", type 0x%02x, is_playable %d, charset 0x%02x, name %s\n", 337 folder_uid_high, folder_uid_low, folder_type, is_playable, charset, value); 338 memcpy(folders[index].name, value, value_len); 339 folders[index].name_len = value_len; 340 break; 341 } 342 case AVRCP_BROWSING_MEDIA_ELEMENT_ITEM:{ 343 printf("Found media: "); 344 345 uint32_t media_uid_high = big_endian_read_32(packet, pos); 346 pos += 4; 347 uint32_t media_uid_low = big_endian_read_32(packet, pos+4); 348 pos += 4; 349 avrcp_browsing_media_type_t media_type = packet[pos++]; 350 uint16_t charset = big_endian_read_16(packet, pos); 351 pos += 2; 352 uint16_t displayable_name_length = big_endian_read_16(packet, pos); 353 pos += 2; 354 pos += displayable_name_length; 355 printf("Media UID: 0x%08" PRIx32 "%08" PRIx32 ", media_type 0x%02x, charset 0x%02x, displayable_name_length %d\n", media_uid_high, media_uid_low, media_type, charset, displayable_name_length); 356 357 uint8_t num_attributes = packet[pos++]; 358 printf("Num media attributes %d\n", num_attributes); 359 360 for (avrcp_media_item_iterator_init(&media_item_context, size-pos, packet+pos); avrcp_media_item_iterator_has_more(&media_item_context); avrcp_media_item_iterator_next(&media_item_context)){ 361 uint32_t attr_id = avrcp_media_item_iterator_get_attr_id(&media_item_context); 362 uint16_t attr_charset = avrcp_media_item_iterator_get_attr_charset(&media_item_context); 363 uint16_t attr_value_length = avrcp_media_item_iterator_get_attr_value_len(&media_item_context); 364 const uint8_t * attr_value = avrcp_media_item_iterator_get_attr_value(&media_item_context); 365 366 printf("Attr ID 0x%08" PRIx32 ", charset %d, attr_value_length %d, value %s", attr_id, attr_charset, attr_value_length, attr_value); 367 } 368 break; 369 } 370 371 default: 372 log_error("AVRCP Browsing: unknown browsable item type 0%02x", data_type); 373 break; 374 } 375 break; 376 case HCI_EVENT_PACKET: 377 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 378 uint16_t local_cid; 379 uint8_t status = 0xFF; 380 bd_addr_t address; 381 382 if (packet[0] != HCI_EVENT_AVRCP_META) break; 383 switch (packet[2]){ 384 385 case AVRCP_SUBEVENT_INCOMING_BROWSING_CONNECTION: 386 local_cid = avrcp_subevent_incoming_browsing_connection_get_browsing_cid(packet); 387 printf("AVRCP Browsing: incoming connection cid 0x%02x\n", local_cid); 388 if (browsing_cid != 0 && browsing_cid != local_cid) { 389 printf("AVRCP Browsing: decline incoming connection, expected 0x%02X l2cap cid, received 0x%02X\n", browsing_cid, local_cid); 390 avrcp_browsing_decline_incoming_connection(browsing_cid); 391 return; 392 } 393 browsing_cid = local_cid; 394 printf("AVRCP Browsing: configure incoming connection, browsing cid 0x%02x\n", browsing_cid); 395 avrcp_browsing_configure_incoming_connection(browsing_cid, ertm_buffer, sizeof(ertm_buffer), &ertm_config); 396 break; 397 398 case AVRCP_SUBEVENT_BROWSING_CONNECTION_ESTABLISHED: { 399 local_cid = avrcp_subevent_browsing_connection_established_get_browsing_cid(packet); 400 if (browsing_cid != 0 && browsing_cid != local_cid) { 401 printf("AVRCP Browsing: connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", browsing_cid, local_cid); 402 return; 403 } 404 405 status = avrcp_subevent_browsing_connection_established_get_status(packet); 406 if (status != ERROR_CODE_SUCCESS){ 407 printf("AVRCP Browsing: connection failed: status 0x%02x\n", status); 408 browsing_cid = 0; 409 return; 410 } 411 412 browsing_cid = local_cid; 413 avrcp_browsing_connected = 1; 414 avrcp_subevent_browsing_connection_established_get_bd_addr(packet, address); 415 printf("AVRCP Browsing: connected, browsing cid 0x%02x\n", browsing_cid); 416 return; 417 } 418 case AVRCP_SUBEVENT_BROWSING_CONNECTION_RELEASED: 419 printf("AVRCP Browsing: disconnected, browsing cid 0x%02x\n", browsing_cid); 420 browsing_cid = 0; 421 avrcp_browsing_connected = 0; 422 return; 423 424 case AVRCP_SUBEVENT_BROWSING_DONE: 425 browsing_query_active = false; 426 browsing_uid_counter = 0; 427 if (avrcp_subevent_browsing_done_get_browsing_status(packet) != AVRCP_BROWSING_ERROR_CODE_SUCCESS){ 428 printf("AVRCP Browsing: query done with browsing status 0x%02x, bluetooth status 0x%02x\n", 429 avrcp_subevent_browsing_done_get_browsing_status(packet), 430 avrcp_subevent_browsing_done_get_bluetooth_status(packet)); 431 break; 432 } 433 browsing_uid_counter = avrcp_subevent_browsing_done_get_uid_counter(packet); 434 printf("AVRCP Browsing: browsing_uid_counter %d\n", browsing_uid_counter); 435 break; 436 437 default: 438 break; 439 } 440 break; 441 442 default: 443 break; 444 } 445 446 } 447 448 #ifdef HAVE_BTSTACK_STDIN 449 static void show_usage(void){ 450 bd_addr_t iut_address; 451 gap_local_bd_addr(iut_address); 452 printf("\n--- Bluetooth AVRCP Browsing Service Test Console %s ---\n", bd_addr_to_str(iut_address)); 453 printf("c - AVRCP Service create connection to addr %s\n", bd_addr_to_str(device_addr)); 454 printf("C - AVRCP Service disconnect\n"); 455 printf("e - AVRCP Browsing Service create connection to addr %s\n", bd_addr_to_str(device_addr)); 456 printf("E - AVRCP Browsing Service disconnect\n"); 457 458 printf("I - Set first found player as addressed player\n"); 459 printf("O - Set first found player as browsed player\n"); 460 461 printf("p - Get media players\n"); 462 printf("Q - Browse folders\n"); 463 printf("P - Go up one level\n"); 464 printf("W - Go down one level\n"); 465 printf("T - Browse media items\n"); 466 printf("---\n"); 467 } 468 #endif 469 470 471 #ifdef HAVE_BTSTACK_STDIN 472 static void stdin_process(char cmd){ 473 uint8_t status = ERROR_CODE_SUCCESS; 474 475 if (cmd != 'a' && cmd != 'A' && cmd != 'c' && cmd != 'C'){ 476 if (browsing_query_active){ 477 printf("Query active, try later!\n"); 478 return; 479 } 480 } 481 482 switch (cmd){ 483 case 'c': 484 printf(" - Connect to AVRCP Service on addr %s.\n", bd_addr_to_str(device_addr)); 485 status = avrcp_connect(device_addr, &avrcp_cid); 486 break; 487 case 'C': 488 if (avrcp_connected){ 489 printf(" - AVRCP Service disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 490 status = avrcp_disconnect(avrcp_cid); 491 break; 492 } 493 printf("AVRCP Service already disconnected\n"); 494 break; 495 496 case 'e': 497 if (!avrcp_connected) { 498 printf(" You must first connect to AVRCP Service on addr %s.\n", bd_addr_to_str(device_addr)); 499 break; 500 } 501 printf(" - Connect to AVRCP Browsing Service at addr %s.\n", bd_addr_to_str(device_addr)); 502 status = avrcp_browsing_connect(device_addr, ertm_buffer, sizeof(ertm_buffer), &ertm_config, &browsing_cid); 503 break; 504 case 'E': 505 if (avrcp_browsing_connected){ 506 printf(" - AVRCP Browsing Service disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 507 status = avrcp_browsing_disconnect(browsing_cid); 508 break; 509 } 510 printf("AVRCP Browsing Service already disconnected\n"); 511 break; 512 case '\n': 513 case '\r': 514 break; 515 516 default: 517 if (!avrcp_browsing_connected){ 518 show_usage(); 519 break; 520 } 521 522 switch (cmd) { 523 case 'I': 524 if (player_index < 0) { 525 printf("AVRCP Browsing:Get media players first\n"); 526 break; 527 } 528 printf("AVRCP Browsing:Set addressed player\n"); 529 status = avrcp_controller_set_addressed_player(avrcp_cid, players[0]); 530 break; 531 case 'O': 532 if (player_index < 0) { 533 printf("AVRCP Browsing:Get media players first\n"); 534 break; 535 } 536 printf("Set browsed player\n"); 537 status = avrcp_browsing_controller_set_browsed_player(browsing_cid, players[0]); 538 break; 539 case 'p': 540 printf("AVRCP Browsing: get media players\n"); 541 player_index = -1; 542 status = avrcp_browsing_controller_get_media_players(browsing_cid, 0, 0xFFFFFFFF, AVRCP_MEDIA_ATTR_ALL); 543 break; 544 case 'Q': 545 printf("AVRCP Browsing: browse folders\n"); 546 folder_index = -1; 547 status = avrcp_browsing_controller_browse_file_system(browsing_cid, 0, 0xFFFFFFFF, AVRCP_MEDIA_ATTR_ALL); 548 break; 549 case 'P': 550 printf("AVRCP Browsing: browse media items\n"); 551 avrcp_browsing_controller_browse_media(browsing_cid, 0, 0xFFFFFFFF, AVRCP_MEDIA_ATTR_ALL); 552 break; 553 case 'W': 554 printf("AVRCP Browsing: go up one level\n"); 555 status = avrcp_browsing_controller_go_up_one_level(browsing_cid); 556 folder_index = -1; 557 break; 558 case 'T': 559 if (folder_index < 0 && !parent_folder_set){ 560 printf("AVRCP Browsing: no folders available\n"); 561 break; 562 } 563 if (!parent_folder_set){ 564 parent_folder_set = 1; 565 memcpy(parent_folder_name, folders[0].name, folders[0].name_len); 566 memcpy(parent_folder_uid, folders[0].uid, 8); 567 } 568 printf("AVRCP Browsing: go down one level of %s\n", (char *)parent_folder_name); 569 status = avrcp_browsing_controller_go_down_one_level(browsing_cid, parent_folder_uid); 570 folder_index = -1; 571 break; 572 default: 573 show_usage(); 574 break; 575 } 576 break; 577 } 578 579 if (status != ERROR_CODE_SUCCESS){ 580 printf("AVRCP Browsing: Could not perform command, status 0x%2x\n", status); 581 } 582 } 583 #endif 584 /* EXAMPLE_END */ 585