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