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