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_controller.c" 39 40 #include <stdint.h> 41 #include <string.h> 42 #include <inttypes.h> 43 44 #include "btstack.h" 45 #include "classic/avrcp.h" 46 #include "classic/avrcp_controller.h" 47 48 #define AVRCP_CMD_BUFFER_SIZE 30 49 50 // made public in avrcp_controller.h 51 avrcp_context_t avrcp_controller_context; 52 53 static uint8_t avrcp_controller_calc_next_transaction_label(uint8_t current_transaction_label){ 54 current_transaction_label++; 55 if (current_transaction_label == 16){ 56 current_transaction_label = 1; 57 } 58 return current_transaction_label; 59 } 60 61 static uint8_t avrcp_controller_get_next_transaction_label(avrcp_connection_t * connection){ 62 connection->transaction_id_counter = avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter); 63 return connection->transaction_id_counter; 64 } 65 66 static bool avrcp_controller_is_transaction_id_valid(avrcp_connection_t * connection, uint8_t transaction_id){ 67 uint8_t delta = ((int8_t) transaction_id - connection->last_confirmed_transaction_id) & 0x0f; 68 return delta < 15; 69 } 70 71 static uint16_t avrcp_get_max_payload_size_for_packet_type(avrcp_packet_type_t packet_type){ 72 switch (packet_type){ 73 case AVRCP_SINGLE_PACKET: 74 return AVRCP_CMD_BUFFER_SIZE - 3; 75 case AVRCP_START_PACKET: 76 return AVRCP_CMD_BUFFER_SIZE - 4; 77 case AVRCP_CONTINUE_PACKET: 78 case AVRCP_END_PACKET: 79 return AVRCP_CMD_BUFFER_SIZE - 1; 80 default: 81 btstack_assert(false); 82 return 0; 83 } 84 } 85 86 static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){ 87 return controller_supported_features & AVRCP_FEATURE_MASK_BROWSING; 88 } 89 90 static void avrcp_controller_emit_notification_for_event_id(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id, avrcp_command_type_t ctype, const uint8_t * payload){ 91 switch (event_id){ 92 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{ 93 uint32_t song_position = big_endian_read_32(payload, 0); 94 uint16_t offset = 0; 95 uint8_t event[10]; 96 event[offset++] = HCI_EVENT_AVRCP_META; 97 event[offset++] = sizeof(event) - 2; 98 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED; 99 little_endian_store_16(event, offset, avrcp_cid); 100 offset += 2; 101 event[offset++] = ctype; 102 little_endian_store_32(event, offset, song_position); 103 offset += 4; 104 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 105 break; 106 } 107 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{ 108 uint16_t offset = 0; 109 uint8_t event[7]; 110 event[offset++] = HCI_EVENT_AVRCP_META; 111 event[offset++] = sizeof(event) - 2; 112 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED; 113 little_endian_store_16(event, offset, avrcp_cid); 114 offset += 2; 115 event[offset++] = ctype; 116 event[offset++] = payload[0]; 117 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 118 break; 119 } 120 case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{ 121 uint16_t offset = 0; 122 uint8_t event[6]; 123 event[offset++] = HCI_EVENT_AVRCP_META; 124 event[offset++] = sizeof(event) - 2; 125 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED; 126 little_endian_store_16(event, offset, avrcp_cid); 127 offset += 2; 128 event[offset++] = ctype; 129 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 130 break; 131 } 132 case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{ 133 uint16_t offset = 0; 134 uint8_t event[6]; 135 event[offset++] = HCI_EVENT_AVRCP_META; 136 event[offset++] = sizeof(event) - 2; 137 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED; 138 little_endian_store_16(event, offset, avrcp_cid); 139 offset += 2; 140 event[offset++] = ctype; 141 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 142 break; 143 } 144 case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{ 145 uint16_t offset = 0; 146 uint8_t event[6]; 147 event[offset++] = HCI_EVENT_AVRCP_META; 148 event[offset++] = sizeof(event) - 2; 149 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED; 150 little_endian_store_16(event, offset, avrcp_cid); 151 offset += 2; 152 event[offset++] = ctype; 153 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 154 break; 155 } 156 case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{ 157 uint16_t offset = 0; 158 uint8_t event[7]; 159 event[offset++] = HCI_EVENT_AVRCP_META; 160 event[offset++] = sizeof(event) - 2; 161 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED; 162 little_endian_store_16(event, offset, avrcp_cid); 163 offset += 2; 164 event[offset++] = ctype; 165 event[offset++] = payload[0] & 0x7F; 166 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 167 break; 168 } 169 case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{ 170 uint8_t event[8]; 171 uint16_t offset = 0; 172 uint16_t uuid = big_endian_read_16(payload, 0); 173 event[offset++] = HCI_EVENT_AVRCP_META; 174 event[offset++] = sizeof(event) - 2; 175 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED; 176 little_endian_store_16(event, offset, avrcp_cid); 177 offset += 2; 178 event[offset++] = ctype; 179 little_endian_store_16(event, offset, uuid); 180 offset += 2; 181 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 182 break; 183 } 184 185 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{ 186 uint16_t offset = 0; 187 uint8_t event[6]; 188 event[offset++] = HCI_EVENT_AVRCP_META; 189 event[offset++] = sizeof(event) - 2; 190 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END; 191 little_endian_store_16(event, offset, avrcp_cid); 192 offset += 2; 193 event[offset++] = ctype; 194 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 195 break; 196 } 197 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{ 198 uint16_t offset = 0; 199 uint8_t event[6]; 200 event[offset++] = HCI_EVENT_AVRCP_META; 201 event[offset++] = sizeof(event) - 2; 202 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START; 203 little_endian_store_16(event, offset, avrcp_cid); 204 offset += 2; 205 event[offset++] = ctype; 206 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 207 break; 208 } 209 case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{ 210 uint16_t offset = 0; 211 uint8_t event[7]; 212 event[offset++] = HCI_EVENT_AVRCP_META; 213 event[offset++] = sizeof(event) - 2; 214 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED; 215 little_endian_store_16(event, offset, avrcp_cid); 216 offset += 2; 217 event[offset++] = ctype; 218 event[offset++] = payload[0]; 219 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 220 break; 221 } 222 223 case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{ 224 uint16_t offset = 0; 225 uint8_t event[7]; 226 event[offset++] = HCI_EVENT_AVRCP_META; 227 event[offset++] = sizeof(event) - 2; 228 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED; 229 little_endian_store_16(event, offset, avrcp_cid); 230 offset += 2; 231 event[offset++] = ctype; 232 event[offset++] = payload[0]; 233 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 234 break; 235 } 236 237 case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED: 238 default: 239 log_info("avrcp: not implemented"); 240 break; 241 } 242 } 243 244 static void avrcp_controller_emit_repeat_and_shuffle_mode(btstack_packet_handler_t callback, uint16_t avrcp_cid, uint8_t ctype, avrcp_repeat_mode_t repeat_mode, avrcp_shuffle_mode_t shuffle_mode){ 245 btstack_assert(callback != NULL); 246 247 uint8_t event[8]; 248 int pos = 0; 249 event[pos++] = HCI_EVENT_AVRCP_META; 250 event[pos++] = sizeof(event) - 2; 251 event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE; 252 little_endian_store_16(event, pos, avrcp_cid); 253 pos += 2; 254 event[pos++] = ctype; 255 event[pos++] = repeat_mode; 256 event[pos++] = shuffle_mode; 257 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 258 } 259 260 static void avrcp_controller_emit_now_playing_info_event_done(btstack_packet_handler_t callback, uint16_t avrcp_cid, uint8_t ctype, uint8_t status){ 261 uint8_t event[7]; 262 int pos = 0; 263 event[pos++] = HCI_EVENT_AVRCP_META; 264 event[pos++] = sizeof(event) - 2; 265 event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE; 266 little_endian_store_16(event, pos, avrcp_cid); 267 pos += 2; 268 event[pos++] = ctype; 269 event[pos++] = status; 270 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 271 } 272 273 static void avrcp_controller_emit_now_playing_info_event(btstack_packet_handler_t callback, uint16_t avrcp_cid, uint8_t ctype, avrcp_media_attribute_id_t attr_id, uint8_t * value, uint16_t value_len){ 274 uint8_t event[HCI_EVENT_BUFFER_SIZE]; 275 int pos = 0; 276 event[pos++] = HCI_EVENT_AVRCP_META; 277 // reserve one byte for subevent type and data len 278 int data_len_pos = pos; 279 pos++; 280 int subevent_type_pos = pos; 281 pos++; 282 little_endian_store_16(event, pos, avrcp_cid); 283 pos += 2; 284 event[pos++] = ctype; 285 286 switch (attr_id){ 287 case AVRCP_MEDIA_ATTR_TITLE: 288 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO; 289 event[pos++] = value_len; 290 (void)memcpy(event + pos, value, value_len); 291 break; 292 case AVRCP_MEDIA_ATTR_ARTIST: 293 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO; 294 event[pos++] = value_len; 295 (void)memcpy(event + pos, value, value_len); 296 break; 297 case AVRCP_MEDIA_ATTR_ALBUM: 298 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO; 299 event[pos++] = value_len; 300 (void)memcpy(event + pos, value, value_len); 301 break; 302 case AVRCP_MEDIA_ATTR_GENRE: 303 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO; 304 event[pos++] = value_len; 305 (void)memcpy(event + pos, value, value_len); 306 break; 307 case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS: 308 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO; 309 if (value){ 310 little_endian_store_32(event, pos, btstack_atoi((char *)value)); 311 } else { 312 little_endian_store_32(event, pos, 0); 313 } 314 pos += 4; 315 break; 316 case AVRCP_MEDIA_ATTR_TRACK: 317 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO; 318 if (value){ 319 event[pos++] = btstack_atoi((char *)value); 320 } else { 321 event[pos++] = 0; 322 } 323 break; 324 case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS: 325 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO; 326 if (value){ 327 event[pos++] = btstack_atoi((char *)value); 328 } else { 329 event[pos++] = 0; 330 } 331 break; 332 default: 333 break; 334 } 335 event[data_len_pos] = pos - 2; 336 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 337 } 338 339 static void avrcp_controller_emit_operation_status(btstack_packet_handler_t callback, uint8_t subevent, uint16_t avrcp_cid, uint8_t ctype, uint8_t operation_id){ 340 btstack_assert(callback != NULL); 341 342 uint8_t event[7]; 343 int pos = 0; 344 event[pos++] = HCI_EVENT_AVRCP_META; 345 event[pos++] = sizeof(event) - 2; 346 event[pos++] = subevent; 347 little_endian_store_16(event, pos, avrcp_cid); 348 pos += 2; 349 event[pos++] = ctype; 350 event[pos++] = operation_id; 351 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 352 } 353 354 static void avrcp_parser_reset(avrcp_connection_t * connection){ 355 connection->list_offset = 0; 356 connection->num_attributes = 0; 357 connection->num_parsed_attributes = 0; 358 connection->parser_attribute_header_pos = 0; 359 connection->num_received_fragments = 0; 360 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 361 } 362 363 static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){ 364 uint16_t attribute_total_value_len; 365 uint32_t attribute_id; 366 switch(connection->parser_state){ 367 case AVRCP_PARSER_GET_ATTRIBUTE_HEADER: 368 connection->parser_attribute_header[connection->parser_attribute_header_pos++] = byte; 369 connection->list_offset++; 370 371 if (connection->parser_attribute_header_pos < AVRCP_ATTRIBUTE_HEADER_LEN) return; 372 373 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 374 connection->attribute_value_len = btstack_min(attribute_total_value_len, AVRCP_MAX_ATTRIBUTTE_SIZE); 375 if (connection->attribute_value_len > 0){ 376 // get ready for attribute value 377 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_VALUE; 378 return; 379 } 380 381 // emit empty attribute 382 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 383 avrcp_controller_emit_now_playing_info_event(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, (avrcp_media_attribute_id_t) attribute_id, connection->attribute_value, connection->attribute_value_len); 384 385 // done, see below 386 break; 387 388 case AVRCP_PARSER_GET_ATTRIBUTE_VALUE: 389 connection->attribute_value[connection->attribute_value_offset++] = byte; 390 connection->list_offset++; 391 392 if (connection->attribute_value_offset < connection->attribute_value_len) return; 393 394 // emit (potentially partial) attribute 395 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 396 avrcp_controller_emit_now_playing_info_event(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, (avrcp_media_attribute_id_t) attribute_id, connection->attribute_value, connection->attribute_value_len); 397 398 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 399 if (connection->attribute_value_offset < attribute_total_value_len){ 400 // ignore rest of attribute 401 connection->parser_state = AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE; 402 return; 403 } 404 405 // done, see below 406 break; 407 408 case AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE: 409 connection->attribute_value_offset++; 410 connection->list_offset++; 411 412 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 413 if (connection->attribute_value_offset < attribute_total_value_len) return; 414 415 // done, see below 416 break; 417 418 default: 419 return; 420 } 421 422 // attribute fully read, check if more to come 423 if (connection->list_offset < connection->list_size){ 424 // more to come, reset parser 425 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 426 connection->parser_attribute_header_pos = 0; 427 connection->attribute_value_offset = 0; 428 } else { 429 // fully done 430 avrcp_parser_reset(connection); 431 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 0); 432 } 433 } 434 435 static void avrcp_controller_parse_and_emit_element_attrs(uint8_t * packet, uint16_t num_bytes_to_read, avrcp_connection_t * connection, avrcp_command_type_t ctype){ 436 int i; 437 for (i=0;i<num_bytes_to_read;i++){ 438 avrcp_parser_process_byte(packet[i], connection, ctype); 439 } 440 } 441 442 443 static int avrcp_send_cmd(avrcp_connection_t * connection, avrcp_packet_type_t packet_type){ 444 uint8_t command[AVRCP_CMD_BUFFER_SIZE]; 445 uint16_t pos = 0; 446 447 // non-fragmented: transport header (1) + PID (2) 448 // fragmented: transport header (1) + num packets (1) + PID (2) 449 450 // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 451 command[pos++] = (connection->transaction_id << 4) | (packet_type << 2) | (AVRCP_COMMAND_FRAME << 1) | 0; 452 453 if (packet_type == AVRCP_START_PACKET){ 454 // num packets: (3 bytes overhead (PID, num packets) + command) / (MTU - transport header). 455 // to get number of packets using integer division, we subtract 1 from the data e.g. len = 5, packet size 5 => need 1 packet 456 command[pos++] = ((connection->cmd_operands_fragmented_len + 3 - 1) / (AVRCP_CMD_BUFFER_SIZE - 1)) + 1; 457 } 458 459 if ((packet_type == AVRCP_SINGLE_PACKET) || (packet_type == AVRCP_START_PACKET)){ 460 // Profile IDentifier (PID) 461 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 462 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 463 464 // command_type 465 command[pos++] = connection->command_type; 466 // subunit_type | subunit ID 467 command[pos++] = (connection->subunit_type << 3) | connection->subunit_id; 468 // opcode 469 command[pos++] = (uint8_t)connection->command_opcode; 470 } 471 472 if (packet_type == AVRCP_SINGLE_PACKET){ 473 // operands 474 (void)memcpy(command + pos, connection->cmd_operands, 475 connection->cmd_operands_length); 476 pos += connection->cmd_operands_length; 477 } else { 478 uint16_t bytes_free = AVRCP_CMD_BUFFER_SIZE - pos; 479 uint16_t bytes_to_store = connection->cmd_operands_fragmented_len-connection->cmd_operands_fragmented_pos; 480 uint16_t bytes_to_copy = btstack_min(bytes_to_store, bytes_free); 481 (void)memcpy(command + pos, 482 &connection->cmd_operands_fragmented_buffer[connection->cmd_operands_fragmented_pos], 483 bytes_to_copy); 484 pos += bytes_to_copy; 485 connection->cmd_operands_fragmented_pos += bytes_to_copy; 486 } 487 488 return l2cap_send(connection->l2cap_signaling_cid, command, pos); 489 } 490 491 static int avrcp_send_register_notification(avrcp_connection_t * connection, uint8_t event_id){ 492 uint8_t command[18]; 493 uint16_t pos = 0; 494 // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 495 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 496 command[pos++] = (connection->transaction_id << 4) | (AVRCP_SINGLE_PACKET << 2) | (AVRCP_COMMAND_FRAME << 1) | 0; 497 498 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 499 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 500 command[pos++] = AVRCP_CTYPE_NOTIFY; 501 command[pos++] = (AVRCP_SUBUNIT_TYPE_PANEL << 3) | AVRCP_SUBUNIT_ID; 502 command[pos++] = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 503 504 big_endian_store_24(command, pos, BT_SIG_COMPANY_ID); 505 pos += 3; 506 command[pos++] = AVRCP_PDU_ID_REGISTER_NOTIFICATION; 507 command[pos++] = 0; // reserved(upper 6) | packet_type -> 0 508 big_endian_store_16(command, pos, 5); // parameter length 509 pos += 2; 510 command[pos++] = event_id; 511 big_endian_store_32(command, pos, 1); // send notification on playback position every second, for other notifications it is ignored 512 pos += 4; 513 return l2cap_send(connection->l2cap_signaling_cid, command, pos); 514 } 515 516 static void avrcp_press_and_hold_timeout_handler(btstack_timer_source_t * timer){ 517 UNUSED(timer); 518 avrcp_connection_t * connection = (avrcp_connection_t*) btstack_run_loop_get_timer_context(timer); 519 btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout 520 btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer); 521 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 522 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 523 } 524 525 static void avrcp_press_and_hold_timer_start(avrcp_connection_t * connection){ 526 btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer); 527 btstack_run_loop_set_timer_handler(&connection->press_and_hold_cmd_timer, avrcp_press_and_hold_timeout_handler); 528 btstack_run_loop_set_timer_context(&connection->press_and_hold_cmd_timer, connection); 529 btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout 530 btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer); 531 } 532 533 static void avrcp_press_and_hold_timer_stop(avrcp_connection_t * connection){ 534 connection->continuous_fast_forward_cmd = 0; 535 btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer); 536 } 537 538 539 static uint8_t avrcp_controller_request_pass_through_release_control_cmd(avrcp_connection_t * connection){ 540 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 541 if (connection->continuous_fast_forward_cmd){ 542 avrcp_press_and_hold_timer_stop(connection); 543 } 544 connection->cmd_operands[0] = 0x80 | connection->cmd_operands[0]; 545 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 546 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 547 return ERROR_CODE_SUCCESS; 548 } 549 550 static inline uint8_t avrcp_controller_request_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed, uint8_t continuous_fast_forward_cmd){ 551 log_info("Send command %d", opid); 552 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 553 if (!connection){ 554 log_error("Could not find a connection. avrcp cid 0x%02x", avrcp_cid); 555 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 556 } 557 558 if (connection->state != AVCTP_CONNECTION_OPENED){ 559 log_error("Connection in wrong state %d, expected %d. avrcp cid 0x%02x", connection->state, AVCTP_CONNECTION_OPENED, avrcp_cid); 560 return ERROR_CODE_COMMAND_DISALLOWED; 561 } 562 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 563 connection->command_opcode = AVRCP_CMD_OPCODE_PASS_THROUGH; 564 connection->command_type = AVRCP_CTYPE_CONTROL; 565 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 566 connection->subunit_id = AVRCP_SUBUNIT_ID; 567 connection->cmd_operands_length = 0; 568 569 connection->continuous_fast_forward_cmd = continuous_fast_forward_cmd; 570 connection->cmd_operands_length = 2; 571 connection->cmd_operands[0] = opid; 572 if (playback_speed > 0){ 573 connection->cmd_operands[2] = playback_speed; 574 connection->cmd_operands_length++; 575 } 576 connection->cmd_operands[1] = connection->cmd_operands_length - 2; 577 578 if (connection->continuous_fast_forward_cmd){ 579 avrcp_press_and_hold_timer_start(connection); 580 } 581 582 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 583 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 584 return ERROR_CODE_SUCCESS; 585 } 586 587 static uint8_t request_single_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 588 return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, 0); 589 } 590 591 static uint8_t request_continuous_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 592 return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, 1); 593 } 594 595 static int avrcp_controller_register_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){ 596 if (connection->notifications_to_deregister & (1 << event_id)) return 0; 597 if (connection->notifications_enabled & (1 << event_id)) return 0; 598 if (connection->notifications_to_register & (1 << event_id)) return 0; 599 connection->notifications_to_register |= (1 << event_id); 600 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 601 return 1; 602 } 603 604 static uint8_t avrcp_controller_request_abort_continuation(avrcp_connection_t * connection){ 605 connection->state = AVCTP_W2_SEND_COMMAND; 606 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 607 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 608 connection->command_type = AVRCP_CTYPE_CONTROL; 609 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 610 connection->subunit_id = AVRCP_SUBUNIT_ID; 611 int pos = 0; 612 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 613 pos += 3; 614 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE; // PDU ID 615 connection->cmd_operands[pos++] = 0; 616 // Parameter Length 617 connection->cmd_operands_length = 8; 618 big_endian_store_16(connection->cmd_operands, pos, 1); 619 pos += 2; 620 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; 621 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 622 return ERROR_CODE_SUCCESS; 623 } 624 625 626 static uint8_t avrcp_controller_request_continue_response(avrcp_connection_t * connection){ 627 connection->state = AVCTP_W2_SEND_COMMAND; 628 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 629 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 630 connection->command_type = AVRCP_CTYPE_CONTROL; 631 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 632 connection->subunit_id = AVRCP_SUBUNIT_ID; 633 int pos = 0; 634 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 635 pos += 3; 636 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE; // PDU ID 637 connection->cmd_operands[pos++] = 0; 638 // Parameter Length 639 connection->cmd_operands_length = 8; 640 big_endian_store_16(connection->cmd_operands, pos, 1); 641 pos += 2; 642 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; 643 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 644 return ERROR_CODE_SUCCESS; 645 } 646 647 static void avrcp_controller_handle_notification(avrcp_connection_t * connection, avrcp_command_type_t ctype, uint8_t * payload){ 648 uint16_t pos = 0; 649 avrcp_notification_event_id_t event_id = (avrcp_notification_event_id_t) payload[pos++]; 650 uint16_t event_mask = (1 << event_id); 651 uint16_t reset_event_mask = ~event_mask; 652 switch (ctype){ 653 case AVRCP_CTYPE_RESPONSE_INTERIM: 654 // register as enabled 655 connection->notifications_enabled |= event_mask; 656 break; 657 case AVRCP_CTYPE_RESPONSE_CHANGED_STABLE: 658 // received change, event is considered deregistered 659 // we are re-enabling it automatically, if it is not 660 // explicitly disabled 661 connection->notifications_enabled &= reset_event_mask; 662 if (! (connection->notifications_to_deregister & event_mask)){ 663 avrcp_controller_register_notification(connection, event_id); 664 } else { 665 connection->notifications_to_deregister &= reset_event_mask; 666 } 667 break; 668 default: 669 connection->notifications_to_register &= reset_event_mask; 670 connection->notifications_enabled &= reset_event_mask; 671 connection->notifications_to_deregister &= reset_event_mask; 672 break; 673 } 674 675 avrcp_controller_emit_notification_for_event_id(connection->avrcp_cid, event_id, ctype, payload+pos); 676 } 677 678 static void avrcp_handle_l2cap_data_packet_for_signaling_connection(avrcp_connection_t * connection, uint8_t *packet, uint16_t size){ 679 if (size < 6u) return; 680 681 uint16_t pos = 3; 682 uint8_t pdu_id; 683 684 connection->last_confirmed_transaction_id = packet[0] >> 4; 685 686 avrcp_frame_type_t frame_type = (avrcp_frame_type_t)((packet[0] >> 1) & 0x01); 687 if (frame_type != AVRCP_RESPONSE_FRAME) return; 688 689 avrcp_packet_type_t packet_type = (avrcp_packet_type_t)((packet[0] >> 2) & 0x03); 690 switch (packet_type){ 691 case AVRCP_SINGLE_PACKET: 692 break; 693 default: 694 log_info("Fragmentation is not supported"); 695 return; 696 } 697 698 avrcp_command_type_t ctype = (avrcp_command_type_t) packet[pos++]; 699 700 #ifdef ENABLE_LOG_INFO 701 uint8_t byte_value = packet[pos]; 702 avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3); 703 avrcp_subunit_type_t subunit_id = (avrcp_subunit_type_t) (byte_value & 0x07); 704 #endif 705 pos++; 706 707 uint8_t opcode = packet[pos++]; 708 uint16_t param_length; 709 710 switch (opcode){ 711 case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{ 712 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 713 connection->state = AVCTP_CONNECTION_OPENED; 714 715 #ifdef ENABLE_LOG_INFO 716 // page, extention code (1) 717 pos++; 718 uint8_t unit_type = packet[pos] >> 3; 719 uint8_t max_subunit_ID = packet[pos] & 0x07; 720 log_info("SUBUNIT INFO response: ctype 0x%02x (0C), subunit_type 0x%02x (1F), subunit_id 0x%02x (07), opcode 0x%02x (30), unit_type 0x%02x, max_subunit_ID %d", ctype, subunit_type, subunit_id, opcode, unit_type, max_subunit_ID); 721 #endif 722 break; 723 } 724 case AVRCP_CMD_OPCODE_UNIT_INFO:{ 725 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 726 connection->state = AVCTP_CONNECTION_OPENED; 727 728 #ifdef ENABLE_LOG_INFO 729 // byte value 7 (1) 730 pos++; 731 uint8_t unit_type = packet[pos] >> 3; 732 uint8_t unit = packet[pos] & 0x07; 733 pos++; 734 uint32_t company_id = big_endian_read_24(packet, pos); 735 log_info("UNIT INFO response: ctype 0x%02x (0C), subunit_type 0x%02x (1F), subunit_id 0x%02x (07), opcode 0x%02x (30), unit_type 0x%02x, unit %d, company_id 0x%06" PRIx32, 736 ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id); 737 #endif 738 break; 739 } 740 case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT: 741 // Company ID (3) 742 pos += 3; 743 pdu_id = packet[pos++]; 744 // packet type (1) 745 pos++; 746 param_length = big_endian_read_16(packet, pos); 747 pos += 2; 748 log_info("operands length %d, remaining size %d", param_length, size - pos); 749 750 if ((size - pos) < param_length) { 751 log_error("Wrong packet size %d < %d", size - pos, param_length); 752 return; 753 }; 754 755 // handle asynchronous notifications, without changing state 756 if (pdu_id == AVRCP_PDU_ID_REGISTER_NOTIFICATION){ 757 avrcp_controller_handle_notification(connection, ctype, packet+pos); 758 break; 759 } 760 761 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE){ 762 log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state); 763 return; 764 } 765 connection->state = AVCTP_CONNECTION_OPENED; 766 767 log_info("VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype)); 768 switch (pdu_id){ 769 case AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE:{ 770 uint8_t num_attributes = packet[pos++]; 771 int i; 772 avrcp_repeat_mode_t repeat_mode = AVRCP_REPEAT_MODE_INVALID; 773 avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID; 774 for (i = 0; i < num_attributes; i++){ 775 uint8_t attribute_id = packet[pos++]; 776 uint8_t value = packet[pos++]; 777 switch (attribute_id){ 778 case 0x02: 779 repeat_mode = (avrcp_repeat_mode_t) value; 780 break; 781 case 0x03: 782 shuffle_mode = (avrcp_shuffle_mode_t) value; 783 break; 784 default: 785 break; 786 } 787 } 788 avrcp_controller_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode); 789 break; 790 } 791 792 case AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE:{ 793 uint16_t offset = 0; 794 uint8_t event[6]; 795 event[offset++] = HCI_EVENT_AVRCP_META; 796 event[offset++] = sizeof(event) - 2; 797 event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE; 798 little_endian_store_16(event, offset, connection->avrcp_cid); 799 offset += 2; 800 event[offset++] = ctype; 801 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 802 break; 803 } 804 805 case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{ 806 uint16_t offset = 0; 807 uint8_t event[7]; 808 event[offset++] = HCI_EVENT_AVRCP_META; 809 event[offset++] = sizeof(event) - 2; 810 event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE; 811 little_endian_store_16(event, offset, connection->avrcp_cid); 812 offset += 2; 813 event[offset++] = ctype; 814 event[offset++] = packet[pos++]; 815 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 816 break; 817 } 818 819 case AVRCP_PDU_ID_GET_CAPABILITIES:{ 820 avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++]; 821 uint8_t capability_count = packet[pos++]; 822 uint16_t i; 823 uint16_t offset = 0; 824 uint8_t event[10]; 825 826 switch (capability_id){ 827 828 case AVRCP_CAPABILITY_ID_COMPANY: 829 for (i = 0; i < capability_count; i++){ 830 uint32_t company_id = big_endian_read_24(packet, pos); 831 pos += 3; 832 log_info(" 0x%06" PRIx32 ", ", company_id); 833 834 offset = 0; 835 event[offset++] = HCI_EVENT_AVRCP_META; 836 event[offset++] = sizeof(event) - 2; 837 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID; 838 little_endian_store_16(event, offset, connection->avrcp_cid); 839 offset += 2; 840 event[offset++] = ctype; 841 event[offset++] = 0; 842 little_endian_store_24(event, offset, company_id); 843 offset += 3; 844 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 845 break; 846 } 847 848 offset = 0; 849 event[offset++] = HCI_EVENT_AVRCP_META; 850 event[offset++] = sizeof(event) - 2; 851 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE; 852 little_endian_store_16(event, offset, connection->avrcp_cid); 853 offset += 2; 854 event[offset++] = ctype; 855 event[offset++] = 0; 856 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 857 break; 858 859 case AVRCP_CAPABILITY_ID_EVENT: 860 for (i = 0; i < capability_count; i++){ 861 uint8_t event_id = packet[pos++]; 862 log_info(" 0x%02x %s", event_id, avrcp_event2str(event_id)); 863 864 offset = 0; 865 event[offset++] = HCI_EVENT_AVRCP_META; 866 event[offset++] = sizeof(event) - 2; 867 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID; 868 little_endian_store_16(event, offset, connection->avrcp_cid); 869 offset += 2; 870 event[offset++] = ctype; 871 event[offset++] = 0; 872 event[offset++] = event_id; 873 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 874 } 875 876 offset = 0; 877 event[offset++] = HCI_EVENT_AVRCP_META; 878 event[offset++] = sizeof(event) - 2; 879 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE; 880 little_endian_store_16(event, offset, connection->avrcp_cid); 881 offset += 2; 882 event[offset++] = ctype; 883 event[offset++] = 0; 884 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 885 break; 886 887 default: 888 btstack_assert(false); 889 break; 890 } 891 break; 892 } 893 894 case AVRCP_PDU_ID_GET_PLAY_STATUS:{ 895 uint32_t song_length = big_endian_read_32(packet, pos); 896 pos += 4; 897 uint32_t song_position = big_endian_read_32(packet, pos); 898 pos += 4; 899 uint8_t play_status = packet[pos]; 900 901 uint8_t event[15]; 902 int offset = 0; 903 event[offset++] = HCI_EVENT_AVRCP_META; 904 event[offset++] = sizeof(event) - 2; 905 event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS; 906 little_endian_store_16(event, offset, connection->avrcp_cid); 907 offset += 2; 908 event[offset++] = ctype; 909 little_endian_store_32(event, offset, song_length); 910 offset += 4; 911 little_endian_store_32(event, offset, song_position); 912 offset += 4; 913 event[offset++] = play_status; 914 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 915 break; 916 } 917 918 case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{ 919 switch (packet_type){ 920 case AVRCP_START_PACKET: 921 case AVRCP_SINGLE_PACKET: 922 avrcp_parser_reset(connection); 923 connection->list_size = param_length; 924 connection->num_attributes = packet[pos++]; 925 926 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 927 928 if (packet_type == AVRCP_START_PACKET){ 929 avrcp_controller_request_continue_response(connection); 930 } 931 break; 932 case AVRCP_CONTINUE_PACKET: 933 case AVRCP_END_PACKET: 934 connection->num_received_fragments++; 935 if (connection->num_received_fragments < connection->max_num_fragments){ 936 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 937 if (packet_type == AVRCP_CONTINUE_PACKET){ 938 avrcp_controller_request_continue_response(connection); 939 } 940 } else { 941 avrcp_controller_request_abort_continuation(connection); 942 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1); 943 avrcp_parser_reset(connection); 944 } 945 break; 946 default: 947 // TODO check 948 btstack_assert(false); 949 break; 950 } 951 } 952 default: 953 break; 954 } 955 break; 956 case AVRCP_CMD_OPCODE_PASS_THROUGH:{ 957 uint8_t operation_id = packet[pos++]; 958 switch (connection->state){ 959 case AVCTP_W2_RECEIVE_PRESS_RESPONSE: 960 if (connection->continuous_fast_forward_cmd){ 961 connection->state = AVCTP_W4_STOP; 962 } else { 963 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 964 } 965 break; 966 case AVCTP_W2_RECEIVE_RESPONSE: 967 connection->state = AVCTP_CONNECTION_OPENED; 968 break; 969 default: 970 break; 971 } 972 if (connection->state == AVCTP_W4_STOP){ 973 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id); 974 } 975 if (connection->state == AVCTP_CONNECTION_OPENED) { 976 // RELEASE response 977 operation_id = operation_id & 0x7F; 978 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id); 979 } 980 if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){ 981 // PRESS response 982 avrcp_controller_request_pass_through_release_control_cmd(connection); 983 } 984 break; 985 } 986 default: 987 break; 988 } 989 990 // trigger pending notification reqistrations 991 if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->notifications_to_register){ 992 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 993 } 994 } 995 996 static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){ 997 switch (connection->state){ 998 case AVCTP_W2_SEND_PRESS_COMMAND: 999 connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE; 1000 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 1001 return; 1002 case AVCTP_W2_SEND_COMMAND: 1003 case AVCTP_W2_SEND_RELEASE_COMMAND: 1004 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 1005 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 1006 return; 1007 case AVCTP_W2_SEND_FRAGMENTED_COMMAND: 1008 if (connection->cmd_operands_fragmented_pos == 0){ 1009 avrcp_send_cmd(connection, AVRCP_START_PACKET); 1010 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1011 } else { 1012 if ((connection->cmd_operands_fragmented_len - connection->cmd_operands_fragmented_pos) > avrcp_get_max_payload_size_for_packet_type(AVRCP_CONTINUE_PACKET)){ 1013 avrcp_send_cmd(connection, AVRCP_CONTINUE_PACKET); 1014 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1015 } else { 1016 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 1017 avrcp_send_cmd(connection, AVRCP_END_PACKET); 1018 } 1019 } 1020 return; 1021 default: 1022 break; 1023 } 1024 // send register notification if queued 1025 if (connection->notifications_to_register != 0){ 1026 uint8_t event_id; 1027 for (event_id = 1; event_id <= AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED; event_id++){ 1028 if (connection->notifications_to_register & (1<<event_id)){ 1029 connection->notifications_to_register &= ~ (1 << event_id); 1030 avrcp_send_register_notification(connection, event_id); 1031 return; 1032 } 1033 } 1034 } 1035 } 1036 1037 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1038 avrcp_connection_t * connection; 1039 1040 switch (packet_type) { 1041 case L2CAP_DATA_PACKET: 1042 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 1043 avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size); 1044 break; 1045 1046 case HCI_EVENT_PACKET: 1047 switch (hci_event_packet_get_type(packet)){ 1048 case L2CAP_EVENT_CAN_SEND_NOW: 1049 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 1050 avrcp_controller_handle_can_send_now(connection); 1051 break; 1052 default: 1053 break; 1054 } 1055 default: 1056 break; 1057 } 1058 } 1059 1060 void avrcp_controller_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){ 1061 avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name); 1062 } 1063 1064 void avrcp_controller_init(void){ 1065 avrcp_controller_context.role = AVRCP_CONTROLLER; 1066 avrcp_controller_context.packet_handler = avrcp_controller_packet_handler; 1067 avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler); 1068 } 1069 1070 void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){ 1071 btstack_assert(callback != NULL); 1072 avrcp_controller_context.avrcp_callback = callback; 1073 } 1074 1075 1076 uint8_t avrcp_controller_play(uint16_t avrcp_cid){ 1077 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1078 } 1079 1080 uint8_t avrcp_controller_stop(uint16_t avrcp_cid){ 1081 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1082 } 1083 1084 uint8_t avrcp_controller_pause(uint16_t avrcp_cid){ 1085 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1086 } 1087 1088 uint8_t avrcp_controller_forward(uint16_t avrcp_cid){ 1089 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1090 } 1091 1092 uint8_t avrcp_controller_backward(uint16_t avrcp_cid){ 1093 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1094 } 1095 1096 uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){ 1097 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1098 } 1099 1100 uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){ 1101 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1102 } 1103 1104 uint8_t avrcp_controller_mute(uint16_t avrcp_cid){ 1105 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1106 } 1107 1108 uint8_t avrcp_controller_skip(uint16_t avrcp_cid){ 1109 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0); 1110 } 1111 1112 uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){ 1113 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1114 } 1115 1116 uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){ 1117 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1118 } 1119 1120 /* start continuous cmds */ 1121 1122 uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){ 1123 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1124 } 1125 uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){ 1126 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1127 } 1128 uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){ 1129 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1130 } 1131 uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){ 1132 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1133 } 1134 uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){ 1135 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1136 } 1137 uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){ 1138 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1139 } 1140 uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){ 1141 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1142 } 1143 uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){ 1144 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1145 } 1146 uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){ 1147 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1148 } 1149 uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){ 1150 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1151 } 1152 1153 /* stop continuous cmds */ 1154 uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){ 1155 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1156 if (!connection){ 1157 log_error("avrcp_stop_play: could not find a connection."); 1158 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1159 } 1160 if (connection->state != AVCTP_W4_STOP) return ERROR_CODE_COMMAND_DISALLOWED; 1161 return avrcp_controller_request_pass_through_release_control_cmd(connection); 1162 } 1163 1164 uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1165 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1166 if (!connection){ 1167 log_error("avrcp_get_play_status: could not find a connection."); 1168 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1169 } 1170 avrcp_controller_register_notification(connection, event_id); 1171 return ERROR_CODE_SUCCESS; 1172 } 1173 1174 uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1175 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1176 if (!connection){ 1177 log_error("avrcp_get_play_status: could not find a connection."); 1178 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1179 } 1180 connection->notifications_to_deregister |= (1 << event_id); 1181 return ERROR_CODE_SUCCESS; 1182 } 1183 1184 uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){ 1185 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1186 if (!connection){ 1187 log_error("avrcp_unit_info: could not find a connection."); 1188 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1189 } 1190 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1191 connection->state = AVCTP_W2_SEND_COMMAND; 1192 1193 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1194 connection->command_opcode = AVRCP_CMD_OPCODE_UNIT_INFO; 1195 connection->command_type = AVRCP_CTYPE_STATUS; 1196 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1197 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1198 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1199 connection->cmd_operands_length = 5; 1200 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1201 return ERROR_CODE_SUCCESS; 1202 } 1203 1204 uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){ 1205 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1206 if (!connection){ 1207 log_error("avrcp_unit_info: could not find a connection."); 1208 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1209 } 1210 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1211 connection->state = AVCTP_W2_SEND_COMMAND; 1212 1213 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1214 connection->command_opcode = AVRCP_CMD_OPCODE_SUBUNIT_INFO; 1215 connection->command_type = AVRCP_CTYPE_STATUS; 1216 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1217 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1218 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1219 connection->cmd_operands[0] = 7; // page: 0, extention_code: 7 1220 connection->cmd_operands_length = 5; 1221 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1222 return ERROR_CODE_SUCCESS; 1223 } 1224 1225 static uint8_t avrcp_controller_get_capabilities(uint16_t avrcp_cid, uint8_t capability_id){ 1226 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1227 if (!connection){ 1228 log_error("avrcp_get_capabilities: could not find a connection."); 1229 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1230 } 1231 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1232 connection->state = AVCTP_W2_SEND_COMMAND; 1233 1234 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1235 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1236 connection->command_type = AVRCP_CTYPE_STATUS; 1237 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1238 connection->subunit_id = AVRCP_SUBUNIT_ID; 1239 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1240 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CAPABILITIES; // PDU ID 1241 connection->cmd_operands[4] = 0; 1242 big_endian_store_16(connection->cmd_operands, 5, 1); // parameter length 1243 connection->cmd_operands[7] = capability_id; // capability ID 1244 connection->cmd_operands_length = 8; 1245 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1246 return ERROR_CODE_SUCCESS; 1247 } 1248 1249 uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){ 1250 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_COMPANY); 1251 } 1252 1253 uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){ 1254 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_EVENT); 1255 } 1256 1257 uint8_t avrcp_controller_get_play_status(uint16_t avrcp_cid){ 1258 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1259 if (!connection){ 1260 log_error("avrcp_get_play_status: could not find a connection."); 1261 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1262 } 1263 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1264 connection->state = AVCTP_W2_SEND_COMMAND; 1265 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1266 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1267 connection->command_type = AVRCP_CTYPE_STATUS; 1268 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1269 connection->subunit_id = AVRCP_SUBUNIT_ID; 1270 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1271 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_PLAY_STATUS; 1272 connection->cmd_operands[4] = 0; // reserved(upper 6) | packet_type -> 0 1273 big_endian_store_16(connection->cmd_operands, 5, 0); // parameter length 1274 connection->cmd_operands_length = 7; 1275 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1276 return ERROR_CODE_SUCCESS; 1277 } 1278 1279 uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){ 1280 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1281 if (!connection){ 1282 log_error("avrcp_get_capabilities: could not find a connection."); 1283 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1284 } 1285 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1286 connection->state = AVCTP_W2_SEND_COMMAND; 1287 1288 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1289 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1290 connection->command_type = AVRCP_CTYPE_CONTROL; 1291 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1292 connection->subunit_id = AVRCP_SUBUNIT_ID; 1293 int pos = 0; 1294 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1295 pos += 3; 1296 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ADDRESSED_PLAYER; // PDU ID 1297 connection->cmd_operands[pos++] = 0; 1298 1299 // Parameter Length 1300 big_endian_store_16(connection->cmd_operands, pos, 2); 1301 pos += 2; 1302 1303 big_endian_store_16(connection->cmd_operands, pos, addressed_player_id); 1304 pos += 2; 1305 1306 connection->cmd_operands_length = pos; 1307 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1308 return ERROR_CODE_SUCCESS; 1309 } 1310 1311 uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){ 1312 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1313 if (!connection){ 1314 log_error("avrcp_get_capabilities: could not find a connection."); 1315 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1316 } 1317 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1318 connection->state = AVCTP_W2_SEND_COMMAND; 1319 1320 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1321 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1322 connection->command_type = AVRCP_CTYPE_STATUS; 1323 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1324 connection->subunit_id = AVRCP_SUBUNIT_ID; 1325 int pos = 0; 1326 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1327 pos += 3; 1328 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; // PDU ID 1329 connection->cmd_operands[pos++] = 0; 1330 1331 // Parameter Length 1332 big_endian_store_16(connection->cmd_operands, pos, 9); 1333 pos += 2; 1334 1335 // write 8 bytes value 1336 memset(connection->cmd_operands + pos, 0, 8); // identifier: PLAYING 1337 pos += 8; 1338 1339 connection->cmd_operands[pos++] = 0; // attribute count, if 0 get all attributes 1340 // every attribute is 4 bytes long 1341 1342 connection->cmd_operands_length = pos; 1343 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1344 return ERROR_CODE_SUCCESS; 1345 } 1346 1347 uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){ 1348 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1349 if (!connection){ 1350 log_error("avrcp_get_capabilities: could not find a connection."); 1351 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1352 } 1353 1354 // 1355 // allow sending of multiple set abs volume commands without waiting for response 1356 // 1357 uint8_t status = ERROR_CODE_COMMAND_DISALLOWED; 1358 switch (connection->state){ 1359 case AVCTP_CONNECTION_OPENED: 1360 status = ERROR_CODE_SUCCESS; 1361 break; 1362 case AVCTP_W2_RECEIVE_RESPONSE: 1363 // - is pending response also set abs volume 1364 if (connection->command_opcode != AVRCP_CMD_OPCODE_VENDOR_DEPENDENT) break; 1365 if (connection->command_type != AVRCP_CTYPE_CONTROL) break; 1366 if (connection->subunit_type != AVRCP_SUBUNIT_TYPE_PANEL) break; 1367 if (connection->subunit_id != AVRCP_SUBUNIT_ID) break; 1368 if (connection->cmd_operands[3] != AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME) break; 1369 // - is next transaction id valid in window 1370 if (avrcp_controller_is_transaction_id_valid(connection, avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter)) == false) break; 1371 status = ERROR_CODE_SUCCESS; 1372 break; 1373 default: 1374 break; 1375 } 1376 if (status != ERROR_CODE_SUCCESS) return status; 1377 1378 connection->state = AVCTP_W2_SEND_COMMAND; 1379 1380 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1381 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1382 connection->command_type = AVRCP_CTYPE_CONTROL; 1383 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1384 connection->subunit_id = AVRCP_SUBUNIT_ID; 1385 int pos = 0; 1386 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1387 pos += 3; 1388 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME; // PDU ID 1389 connection->cmd_operands[pos++] = 0; 1390 1391 // Parameter Length 1392 big_endian_store_16(connection->cmd_operands, pos, 1); 1393 pos += 2; 1394 connection->cmd_operands[pos++] = volume; 1395 1396 connection->cmd_operands_length = pos; 1397 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1398 return ERROR_CODE_SUCCESS; 1399 } 1400 1401 uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){ 1402 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1403 if (!connection){ 1404 log_error("avrcp_get_capabilities: could not find a connection."); 1405 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1406 } 1407 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1408 connection->state = AVCTP_W2_SEND_COMMAND; 1409 1410 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1411 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1412 connection->command_type = AVRCP_CTYPE_STATUS; 1413 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1414 connection->subunit_id = AVRCP_SUBUNIT_ID; 1415 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1416 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID 1417 connection->cmd_operands[4] = 0; 1418 big_endian_store_16(connection->cmd_operands, 5, 5); // parameter length 1419 connection->cmd_operands[7] = 4; // NumPlayerApplicationSettingAttributeID 1420 // PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133 1421 connection->cmd_operands[8] = 0x01; // equalizer (1-OFF, 2-ON) 1422 connection->cmd_operands[9] = 0x02; // repeat (1-off, 2-single track, 3-all tracks, 4-group repeat) 1423 connection->cmd_operands[10] = 0x03; // shuffle (1-off, 2-all tracks, 3-group shuffle) 1424 connection->cmd_operands[11] = 0x04; // scan (1-off, 2-all tracks, 3-group scan) 1425 connection->cmd_operands_length = 12; 1426 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1427 return ERROR_CODE_SUCCESS; 1428 } 1429 1430 static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){ 1431 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1432 if (!connection){ 1433 log_error("avrcp_get_capabilities: could not find a connection."); 1434 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1435 } 1436 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1437 connection->state = AVCTP_W2_SEND_COMMAND; 1438 1439 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1440 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1441 connection->command_type = AVRCP_CTYPE_CONTROL; 1442 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1443 connection->subunit_id = AVRCP_SUBUNIT_ID; 1444 int pos = 0; 1445 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1446 pos += 3; 1447 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID 1448 connection->cmd_operands[pos++] = 0; 1449 // Parameter Length 1450 big_endian_store_16(connection->cmd_operands, pos, 3); 1451 pos += 2; 1452 connection->cmd_operands[pos++] = 2; 1453 connection->cmd_operands_length = pos; 1454 connection->cmd_operands[pos++] = attr_id; 1455 connection->cmd_operands[pos++] = attr_value; 1456 connection->cmd_operands_length = pos; 1457 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1458 return ERROR_CODE_SUCCESS; 1459 } 1460 1461 uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){ 1462 if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1463 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode); 1464 } 1465 1466 uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){ 1467 if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1468 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode); 1469 } 1470 1471 uint8_t avrcp_controller_play_item_for_scope(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){ 1472 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1473 if (!connection){ 1474 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1475 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1476 } 1477 if (connection->state != AVCTP_CONNECTION_OPENED){ 1478 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1479 return ERROR_CODE_COMMAND_DISALLOWED; 1480 } 1481 connection->state = AVCTP_W2_SEND_COMMAND; 1482 1483 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1484 connection->command_type = AVRCP_CTYPE_CONTROL; 1485 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1486 connection->subunit_id = AVRCP_SUBUNIT_ID; 1487 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1488 int pos = 0; 1489 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1490 pos += 3; 1491 connection->cmd_operands[pos++] = AVRCP_PDU_ID_PLAY_ITEM; // PDU ID 1492 // reserved 1493 connection->cmd_operands[pos++] = 0; 1494 // Parameter Length 1495 big_endian_store_16(connection->cmd_operands, pos, 11); 1496 pos += 2; 1497 connection->cmd_operands[pos++] = scope; 1498 memset(&connection->cmd_operands[pos], 0, 8); 1499 if (uid){ 1500 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1501 } 1502 pos += 8; 1503 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1504 pos += 2; 1505 connection->cmd_operands_length = pos; 1506 1507 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1508 return ERROR_CODE_SUCCESS; 1509 } 1510 1511 uint8_t avrcp_controller_add_item_from_scope_to_now_playing_list(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){ 1512 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1513 if (!connection){ 1514 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1515 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1516 } 1517 if (connection->state != AVCTP_CONNECTION_OPENED){ 1518 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1519 return ERROR_CODE_COMMAND_DISALLOWED; 1520 } 1521 connection->state = AVCTP_W2_SEND_COMMAND; 1522 1523 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1524 connection->command_type = AVRCP_CTYPE_CONTROL; 1525 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1526 connection->subunit_id = AVRCP_SUBUNIT_ID; 1527 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1528 int pos = 0; 1529 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1530 pos += 3; 1531 connection->cmd_operands[pos++] = AVRCP_PDU_ID_ADD_TO_NOW_PLAYING; // PDU ID 1532 // reserved 1533 connection->cmd_operands[pos++] = 0; 1534 // Parameter Length 1535 big_endian_store_16(connection->cmd_operands, pos, 11); 1536 pos += 2; 1537 connection->cmd_operands[pos++] = scope; 1538 memset(&connection->cmd_operands[pos], 0, 8); 1539 if (uid){ 1540 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1541 } 1542 pos += 8; 1543 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1544 pos += 2; 1545 connection->cmd_operands_length = pos; 1546 1547 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1548 return ERROR_CODE_SUCCESS; 1549 } 1550 1551 uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){ 1552 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1553 if (!connection){ 1554 log_error("avrcp_controller_play_item: could not find a connection."); 1555 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1556 } 1557 connection->max_num_fragments = max_num_fragments; 1558 return ERROR_CODE_SUCCESS; 1559 } 1560 1561 uint8_t avrcp_controller_send_custom_command(uint16_t avrcp_cid, avrcp_command_type_t command_type, avrcp_subunit_type_t subunit_type, avrcp_subunit_id_t subunit_id, avrcp_command_opcode_t command_opcode, const uint8_t * command_buffer, uint16_t command_len){ 1562 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1563 if (!connection){ 1564 log_error("avrcp_controller_play_item: could not find a connection."); 1565 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1566 } 1567 1568 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1569 connection->state = AVCTP_W2_SEND_FRAGMENTED_COMMAND; 1570 1571 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1572 connection->command_opcode = command_opcode; 1573 connection->command_type = command_type; 1574 connection->subunit_type = subunit_type; 1575 connection->subunit_id = subunit_id; 1576 connection->cmd_operands_fragmented_buffer = command_buffer; 1577 connection->cmd_operands_fragmented_pos = 0; 1578 connection->cmd_operands_fragmented_len = command_len; 1579 1580 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1581 return ERROR_CODE_SUCCESS; 1582 } 1583