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 "classic/avrcp.h" 45 #include "classic/avrcp_controller.h" 46 47 #include "bluetooth_sdp.h" 48 #include "btstack_debug.h" 49 #include "btstack_event.h" 50 #include "btstack_util.h" 51 #include "l2cap.h" 52 53 #define AVRCP_CMD_BUFFER_SIZE 30 54 55 // made public in avrcp_controller.h 56 avrcp_context_t avrcp_controller_context; 57 58 static uint8_t avrcp_controller_calc_next_transaction_label(uint8_t current_transaction_label){ 59 current_transaction_label++; 60 if (current_transaction_label == 16){ 61 current_transaction_label = 1; 62 } 63 return current_transaction_label; 64 } 65 66 static uint8_t avrcp_controller_get_next_transaction_label(avrcp_connection_t * connection){ 67 connection->transaction_id_counter = avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter); 68 return connection->transaction_id_counter; 69 } 70 71 static bool avrcp_controller_is_transaction_id_valid(avrcp_connection_t * connection, uint8_t transaction_id){ 72 uint8_t delta = ((int8_t) transaction_id - connection->last_confirmed_transaction_id) & 0x0f; 73 return delta < 15; 74 } 75 76 static uint16_t avrcp_get_max_payload_size_for_packet_type(avrcp_packet_type_t packet_type){ 77 switch (packet_type){ 78 case AVRCP_SINGLE_PACKET: 79 return AVRCP_CMD_BUFFER_SIZE - 3; 80 case AVRCP_START_PACKET: 81 return AVRCP_CMD_BUFFER_SIZE - 4; 82 case AVRCP_CONTINUE_PACKET: 83 case AVRCP_END_PACKET: 84 return AVRCP_CMD_BUFFER_SIZE - 1; 85 default: 86 btstack_assert(false); 87 return 0; 88 } 89 } 90 91 static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){ 92 return controller_supported_features & AVRCP_FEATURE_MASK_BROWSING; 93 } 94 95 static void avrcp_controller_emit_notification_for_event_id(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id, 96 avrcp_command_type_t ctype, const uint8_t *payload, 97 uint16_t size) { 98 switch (event_id){ 99 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{ 100 if (size < 4) break; 101 uint32_t song_position = big_endian_read_32(payload, 0); 102 uint16_t offset = 0; 103 uint8_t event[10]; 104 event[offset++] = HCI_EVENT_AVRCP_META; 105 event[offset++] = sizeof(event) - 2; 106 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED; 107 little_endian_store_16(event, offset, avrcp_cid); 108 offset += 2; 109 event[offset++] = ctype; 110 little_endian_store_32(event, offset, song_position); 111 offset += 4; 112 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 113 break; 114 } 115 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{ 116 if (size < 1) break; 117 uint16_t offset = 0; 118 uint8_t event[7]; 119 event[offset++] = HCI_EVENT_AVRCP_META; 120 event[offset++] = sizeof(event) - 2; 121 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED; 122 little_endian_store_16(event, offset, avrcp_cid); 123 offset += 2; 124 event[offset++] = ctype; 125 event[offset++] = payload[0]; 126 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 127 break; 128 } 129 case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{ 130 uint16_t offset = 0; 131 uint8_t event[6]; 132 event[offset++] = HCI_EVENT_AVRCP_META; 133 event[offset++] = sizeof(event) - 2; 134 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED; 135 little_endian_store_16(event, offset, avrcp_cid); 136 offset += 2; 137 event[offset++] = ctype; 138 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 139 break; 140 } 141 case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{ 142 uint16_t offset = 0; 143 uint8_t event[6]; 144 event[offset++] = HCI_EVENT_AVRCP_META; 145 event[offset++] = sizeof(event) - 2; 146 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED; 147 little_endian_store_16(event, offset, avrcp_cid); 148 offset += 2; 149 event[offset++] = ctype; 150 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 151 break; 152 } 153 case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{ 154 uint16_t offset = 0; 155 uint8_t event[6]; 156 event[offset++] = HCI_EVENT_AVRCP_META; 157 event[offset++] = sizeof(event) - 2; 158 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED; 159 little_endian_store_16(event, offset, avrcp_cid); 160 offset += 2; 161 event[offset++] = ctype; 162 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 163 break; 164 } 165 case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{ 166 if (size < 1) break; 167 uint16_t offset = 0; 168 uint8_t event[7]; 169 event[offset++] = HCI_EVENT_AVRCP_META; 170 event[offset++] = sizeof(event) - 2; 171 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED; 172 little_endian_store_16(event, offset, avrcp_cid); 173 offset += 2; 174 event[offset++] = ctype; 175 event[offset++] = payload[0] & 0x7F; 176 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 177 break; 178 } 179 case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{ 180 if (size < 2) break; 181 uint8_t event[8]; 182 uint16_t offset = 0; 183 uint16_t uuid = big_endian_read_16(payload, 0); 184 event[offset++] = HCI_EVENT_AVRCP_META; 185 event[offset++] = sizeof(event) - 2; 186 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED; 187 little_endian_store_16(event, offset, avrcp_cid); 188 offset += 2; 189 event[offset++] = ctype; 190 little_endian_store_16(event, offset, uuid); 191 offset += 2; 192 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 193 break; 194 } 195 196 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{ 197 uint16_t offset = 0; 198 uint8_t event[6]; 199 event[offset++] = HCI_EVENT_AVRCP_META; 200 event[offset++] = sizeof(event) - 2; 201 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END; 202 little_endian_store_16(event, offset, avrcp_cid); 203 offset += 2; 204 event[offset++] = ctype; 205 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 206 break; 207 } 208 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{ 209 uint16_t offset = 0; 210 uint8_t event[6]; 211 event[offset++] = HCI_EVENT_AVRCP_META; 212 event[offset++] = sizeof(event) - 2; 213 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START; 214 little_endian_store_16(event, offset, avrcp_cid); 215 offset += 2; 216 event[offset++] = ctype; 217 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 218 break; 219 } 220 case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{ 221 if (size < 1) break; 222 uint16_t offset = 0; 223 uint8_t event[7]; 224 event[offset++] = HCI_EVENT_AVRCP_META; 225 event[offset++] = sizeof(event) - 2; 226 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED; 227 little_endian_store_16(event, offset, avrcp_cid); 228 offset += 2; 229 event[offset++] = ctype; 230 event[offset++] = payload[0]; 231 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 232 break; 233 } 234 235 case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{ 236 if (size < 1) break; 237 uint16_t offset = 0; 238 uint8_t event[7]; 239 event[offset++] = HCI_EVENT_AVRCP_META; 240 event[offset++] = sizeof(event) - 2; 241 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED; 242 little_endian_store_16(event, offset, avrcp_cid); 243 offset += 2; 244 event[offset++] = ctype; 245 event[offset++] = payload[0]; 246 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 247 break; 248 } 249 250 case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED: 251 default: 252 log_info("avrcp: not implemented"); 253 break; 254 } 255 } 256 257 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){ 258 btstack_assert(callback != NULL); 259 260 uint8_t event[8]; 261 int pos = 0; 262 event[pos++] = HCI_EVENT_AVRCP_META; 263 event[pos++] = sizeof(event) - 2; 264 event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE; 265 little_endian_store_16(event, pos, avrcp_cid); 266 pos += 2; 267 event[pos++] = ctype; 268 event[pos++] = repeat_mode; 269 event[pos++] = shuffle_mode; 270 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 271 } 272 273 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){ 274 uint8_t event[7]; 275 int pos = 0; 276 event[pos++] = HCI_EVENT_AVRCP_META; 277 event[pos++] = sizeof(event) - 2; 278 event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE; 279 little_endian_store_16(event, pos, avrcp_cid); 280 pos += 2; 281 event[pos++] = ctype; 282 event[pos++] = status; 283 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 284 } 285 286 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){ 287 uint8_t event[HCI_EVENT_BUFFER_SIZE]; 288 int pos = 0; 289 event[pos++] = HCI_EVENT_AVRCP_META; 290 // reserve one byte for subevent type and data len 291 int data_len_pos = pos; 292 pos++; 293 int subevent_type_pos = pos; 294 pos++; 295 little_endian_store_16(event, pos, avrcp_cid); 296 pos += 2; 297 event[pos++] = ctype; 298 299 switch (attr_id){ 300 case AVRCP_MEDIA_ATTR_TITLE: 301 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO; 302 event[pos++] = value_len; 303 (void)memcpy(event + pos, value, value_len); 304 break; 305 case AVRCP_MEDIA_ATTR_ARTIST: 306 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO; 307 event[pos++] = value_len; 308 (void)memcpy(event + pos, value, value_len); 309 break; 310 case AVRCP_MEDIA_ATTR_ALBUM: 311 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO; 312 event[pos++] = value_len; 313 (void)memcpy(event + pos, value, value_len); 314 break; 315 case AVRCP_MEDIA_ATTR_GENRE: 316 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO; 317 event[pos++] = value_len; 318 (void)memcpy(event + pos, value, value_len); 319 break; 320 case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS: 321 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO; 322 if (value){ 323 little_endian_store_32(event, pos, btstack_atoi((char *)value)); 324 } else { 325 little_endian_store_32(event, pos, 0); 326 } 327 pos += 4; 328 break; 329 case AVRCP_MEDIA_ATTR_TRACK: 330 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO; 331 if (value){ 332 event[pos++] = btstack_atoi((char *)value); 333 } else { 334 event[pos++] = 0; 335 } 336 break; 337 case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS: 338 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO; 339 if (value){ 340 event[pos++] = btstack_atoi((char *)value); 341 } else { 342 event[pos++] = 0; 343 } 344 break; 345 default: 346 break; 347 } 348 event[data_len_pos] = pos - 2; 349 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 350 } 351 352 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){ 353 btstack_assert(callback != NULL); 354 355 uint8_t event[7]; 356 int pos = 0; 357 event[pos++] = HCI_EVENT_AVRCP_META; 358 event[pos++] = sizeof(event) - 2; 359 event[pos++] = subevent; 360 little_endian_store_16(event, pos, avrcp_cid); 361 pos += 2; 362 event[pos++] = ctype; 363 event[pos++] = operation_id; 364 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 365 } 366 367 static void avrcp_parser_reset(avrcp_connection_t * connection){ 368 connection->list_offset = 0; 369 connection->num_attributes = 0; 370 connection->num_parsed_attributes = 0; 371 connection->parser_attribute_header_pos = 0; 372 connection->num_received_fragments = 0; 373 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 374 } 375 376 static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){ 377 uint16_t attribute_total_value_len; 378 uint32_t attribute_id; 379 switch(connection->parser_state){ 380 case AVRCP_PARSER_GET_ATTRIBUTE_HEADER: 381 connection->parser_attribute_header[connection->parser_attribute_header_pos++] = byte; 382 connection->list_offset++; 383 384 if (connection->parser_attribute_header_pos < AVRCP_ATTRIBUTE_HEADER_LEN) return; 385 386 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 387 connection->attribute_value_len = btstack_min(attribute_total_value_len, AVRCP_MAX_ATTRIBUTTE_SIZE); 388 if (connection->attribute_value_len > 0){ 389 // get ready for attribute value 390 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_VALUE; 391 return; 392 } 393 394 // emit empty 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 // done, see below 399 break; 400 401 case AVRCP_PARSER_GET_ATTRIBUTE_VALUE: 402 connection->attribute_value[connection->attribute_value_offset++] = byte; 403 connection->list_offset++; 404 405 if (connection->attribute_value_offset < connection->attribute_value_len) return; 406 407 // emit (potentially partial) attribute 408 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 409 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); 410 411 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 412 if (connection->attribute_value_offset < attribute_total_value_len){ 413 // ignore rest of attribute 414 connection->parser_state = AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE; 415 return; 416 } 417 418 // done, see below 419 break; 420 421 case AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE: 422 connection->attribute_value_offset++; 423 connection->list_offset++; 424 425 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 426 if (connection->attribute_value_offset < attribute_total_value_len) return; 427 428 // done, see below 429 break; 430 431 default: 432 return; 433 } 434 435 // attribute fully read, check if more to come 436 if (connection->list_offset < connection->list_size){ 437 // more to come, reset parser 438 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 439 connection->parser_attribute_header_pos = 0; 440 connection->attribute_value_offset = 0; 441 } else { 442 // fully done 443 avrcp_parser_reset(connection); 444 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 0); 445 } 446 } 447 448 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){ 449 int i; 450 for (i=0;i<num_bytes_to_read;i++){ 451 avrcp_parser_process_byte(packet[i], connection, ctype); 452 } 453 } 454 455 456 static int avrcp_send_cmd(avrcp_connection_t * connection, avrcp_packet_type_t packet_type){ 457 uint8_t command[AVRCP_CMD_BUFFER_SIZE]; 458 uint16_t pos = 0; 459 460 // non-fragmented: transport header (1) + PID (2) 461 // fragmented: transport header (1) + num packets (1) + PID (2) 462 463 // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 464 command[pos++] = (connection->transaction_id << 4) | (packet_type << 2) | (AVRCP_COMMAND_FRAME << 1) | 0; 465 466 if (packet_type == AVRCP_START_PACKET){ 467 // num packets: (3 bytes overhead (PID, num packets) + command) / (MTU - transport header). 468 // to get number of packets using integer division, we subtract 1 from the data e.g. len = 5, packet size 5 => need 1 packet 469 command[pos++] = ((connection->cmd_operands_fragmented_len + 3 - 1) / (AVRCP_CMD_BUFFER_SIZE - 1)) + 1; 470 } 471 472 if ((packet_type == AVRCP_SINGLE_PACKET) || (packet_type == AVRCP_START_PACKET)){ 473 // Profile IDentifier (PID) 474 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 475 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 476 477 // command_type 478 command[pos++] = connection->command_type; 479 // subunit_type | subunit ID 480 command[pos++] = (connection->subunit_type << 3) | connection->subunit_id; 481 // opcode 482 command[pos++] = (uint8_t)connection->command_opcode; 483 } 484 485 if (packet_type == AVRCP_SINGLE_PACKET){ 486 // operands 487 (void)memcpy(command + pos, connection->cmd_operands, 488 connection->cmd_operands_length); 489 pos += connection->cmd_operands_length; 490 } else { 491 uint16_t bytes_free = AVRCP_CMD_BUFFER_SIZE - pos; 492 uint16_t bytes_to_store = connection->cmd_operands_fragmented_len-connection->cmd_operands_fragmented_pos; 493 uint16_t bytes_to_copy = btstack_min(bytes_to_store, bytes_free); 494 (void)memcpy(command + pos, 495 &connection->cmd_operands_fragmented_buffer[connection->cmd_operands_fragmented_pos], 496 bytes_to_copy); 497 pos += bytes_to_copy; 498 connection->cmd_operands_fragmented_pos += bytes_to_copy; 499 } 500 501 return l2cap_send(connection->l2cap_signaling_cid, command, pos); 502 } 503 504 static int avrcp_send_register_notification(avrcp_connection_t * connection, uint8_t event_id){ 505 uint8_t command[18]; 506 uint16_t pos = 0; 507 // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 508 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 509 command[pos++] = (connection->transaction_id << 4) | (AVRCP_SINGLE_PACKET << 2) | (AVRCP_COMMAND_FRAME << 1) | 0; 510 511 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 512 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 513 command[pos++] = AVRCP_CTYPE_NOTIFY; 514 command[pos++] = (AVRCP_SUBUNIT_TYPE_PANEL << 3) | AVRCP_SUBUNIT_ID; 515 command[pos++] = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 516 517 big_endian_store_24(command, pos, BT_SIG_COMPANY_ID); 518 pos += 3; 519 command[pos++] = AVRCP_PDU_ID_REGISTER_NOTIFICATION; 520 command[pos++] = 0; // reserved(upper 6) | packet_type -> 0 521 big_endian_store_16(command, pos, 5); // parameter length 522 pos += 2; 523 command[pos++] = event_id; 524 big_endian_store_32(command, pos, 1); // send notification on playback position every second, for other notifications it is ignored 525 pos += 4; 526 return l2cap_send(connection->l2cap_signaling_cid, command, pos); 527 } 528 529 static void avrcp_press_and_hold_timeout_handler(btstack_timer_source_t * timer){ 530 UNUSED(timer); 531 avrcp_connection_t * connection = (avrcp_connection_t*) btstack_run_loop_get_timer_context(timer); 532 btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout 533 btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer); 534 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 535 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 536 } 537 538 static void avrcp_press_and_hold_timer_start(avrcp_connection_t * connection){ 539 btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer); 540 btstack_run_loop_set_timer_handler(&connection->press_and_hold_cmd_timer, avrcp_press_and_hold_timeout_handler); 541 btstack_run_loop_set_timer_context(&connection->press_and_hold_cmd_timer, connection); 542 btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout 543 btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer); 544 } 545 546 static void avrcp_press_and_hold_timer_stop(avrcp_connection_t * connection){ 547 connection->press_and_hold_cmd = 0; 548 btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer); 549 } 550 551 552 static uint8_t avrcp_controller_request_pass_through_release_control_cmd(avrcp_connection_t * connection){ 553 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 554 if (connection->press_and_hold_cmd){ 555 avrcp_press_and_hold_timer_stop(connection); 556 } 557 connection->cmd_operands[0] = 0x80 | connection->cmd_operands[0]; 558 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 559 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 560 return ERROR_CODE_SUCCESS; 561 } 562 563 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, bool continuous_fast_forward_cmd){ 564 log_info("Send command %d", opid); 565 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 566 if (!connection){ 567 log_error("Could not find a connection. avrcp cid 0x%02x", avrcp_cid); 568 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 569 } 570 571 if (connection->state != AVCTP_CONNECTION_OPENED){ 572 log_error("Connection in wrong state %d, expected %d. avrcp cid 0x%02x", connection->state, AVCTP_CONNECTION_OPENED, avrcp_cid); 573 return ERROR_CODE_COMMAND_DISALLOWED; 574 } 575 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 576 connection->command_opcode = AVRCP_CMD_OPCODE_PASS_THROUGH; 577 connection->command_type = AVRCP_CTYPE_CONTROL; 578 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 579 connection->subunit_id = AVRCP_SUBUNIT_ID; 580 connection->cmd_operands_length = 0; 581 582 connection->press_and_hold_cmd = continuous_fast_forward_cmd; 583 connection->cmd_operands_length = 2; 584 connection->cmd_operands[0] = opid; 585 if (playback_speed > 0){ 586 connection->cmd_operands[2] = playback_speed; 587 connection->cmd_operands_length++; 588 } 589 connection->cmd_operands[1] = connection->cmd_operands_length - 2; 590 591 if (connection->press_and_hold_cmd){ 592 avrcp_press_and_hold_timer_start(connection); 593 } 594 595 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 596 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 597 return ERROR_CODE_SUCCESS; 598 } 599 600 static uint8_t request_single_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 601 return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, false); 602 } 603 604 static uint8_t request_continuous_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 605 return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, true); 606 } 607 608 static int avrcp_controller_register_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){ 609 if (connection->notifications_to_deregister & (1 << event_id)) return 0; 610 if (connection->notifications_enabled & (1 << event_id)) return 0; 611 if (connection->notifications_to_register & (1 << event_id)) return 0; 612 connection->notifications_to_register |= (1 << event_id); 613 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 614 return 1; 615 } 616 617 static uint8_t avrcp_controller_request_abort_continuation(avrcp_connection_t * connection){ 618 connection->state = AVCTP_W2_SEND_COMMAND; 619 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 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_ABORT_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 } 637 638 639 static uint8_t avrcp_controller_request_continue_response(avrcp_connection_t * connection){ 640 connection->state = AVCTP_W2_SEND_COMMAND; 641 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 642 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 643 connection->command_type = AVRCP_CTYPE_CONTROL; 644 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 645 connection->subunit_id = AVRCP_SUBUNIT_ID; 646 int pos = 0; 647 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 648 pos += 3; 649 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE; // PDU ID 650 connection->cmd_operands[pos++] = 0; 651 // Parameter Length 652 connection->cmd_operands_length = 8; 653 big_endian_store_16(connection->cmd_operands, pos, 1); 654 pos += 2; 655 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; 656 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 657 return ERROR_CODE_SUCCESS; 658 } 659 660 static void 661 avrcp_controller_handle_notification(avrcp_connection_t *connection, avrcp_command_type_t ctype, uint8_t *payload, uint16_t size) { 662 if (size < 1) return; 663 uint16_t pos = 0; 664 avrcp_notification_event_id_t event_id = (avrcp_notification_event_id_t) payload[pos++]; 665 uint16_t event_mask = (1 << event_id); 666 uint16_t reset_event_mask = ~event_mask; 667 switch (ctype){ 668 case AVRCP_CTYPE_RESPONSE_INTERIM: 669 // register as enabled 670 connection->notifications_enabled |= event_mask; 671 break; 672 case AVRCP_CTYPE_RESPONSE_CHANGED_STABLE: 673 // received change, event is considered deregistered 674 // we are re-enabling it automatically, if it is not 675 // explicitly disabled 676 connection->notifications_enabled &= reset_event_mask; 677 if (! (connection->notifications_to_deregister & event_mask)){ 678 avrcp_controller_register_notification(connection, event_id); 679 } else { 680 connection->notifications_to_deregister &= reset_event_mask; 681 } 682 break; 683 default: 684 connection->notifications_to_register &= reset_event_mask; 685 connection->notifications_enabled &= reset_event_mask; 686 connection->notifications_to_deregister &= reset_event_mask; 687 break; 688 } 689 690 avrcp_controller_emit_notification_for_event_id(connection->avrcp_cid, event_id, ctype, payload + pos, size - pos); 691 } 692 693 static void avrcp_handle_l2cap_data_packet_for_signaling_connection(avrcp_connection_t * connection, uint8_t *packet, uint16_t size){ 694 if (size < 6u) return; 695 696 uint8_t pdu_id; 697 uint8_t vendor_dependent_packet_type; 698 699 connection->last_confirmed_transaction_id = packet[0] >> 4; 700 701 avrcp_frame_type_t frame_type = (avrcp_frame_type_t)((packet[0] >> 1) & 0x01); 702 if (frame_type != AVRCP_RESPONSE_FRAME) return; 703 704 avrcp_packet_type_t packet_type = (avrcp_packet_type_t)((packet[0] >> 2) & 0x03); 705 switch (packet_type){ 706 case AVRCP_SINGLE_PACKET: 707 break; 708 default: 709 log_info("Fragmentation is not supported"); 710 return; 711 } 712 713 uint16_t pos = 3; 714 avrcp_command_type_t ctype = (avrcp_command_type_t) packet[pos++]; 715 716 #ifdef ENABLE_LOG_INFO 717 uint8_t byte_value = packet[pos]; 718 avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3); 719 avrcp_subunit_type_t subunit_id = (avrcp_subunit_type_t) (byte_value & 0x07); 720 #endif 721 pos++; 722 723 uint8_t opcode = packet[pos++]; 724 uint16_t param_length; 725 726 switch (opcode){ 727 case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{ 728 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 729 connection->state = AVCTP_CONNECTION_OPENED; 730 731 #ifdef ENABLE_LOG_INFO 732 // page, extention code (1) 733 pos++; 734 uint8_t unit_type = packet[pos] >> 3; 735 uint8_t max_subunit_ID = packet[pos] & 0x07; 736 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); 737 #endif 738 break; 739 } 740 case AVRCP_CMD_OPCODE_UNIT_INFO:{ 741 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 742 connection->state = AVCTP_CONNECTION_OPENED; 743 744 #ifdef ENABLE_LOG_INFO 745 // byte value 7 (1) 746 pos++; 747 uint8_t unit_type = packet[pos] >> 3; 748 uint8_t unit = packet[pos] & 0x07; 749 pos++; 750 uint32_t company_id = big_endian_read_24(packet, pos); 751 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, 752 ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id); 753 #endif 754 break; 755 } 756 case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT: 757 758 if ((size - pos) < 7) return; 759 760 // Company ID (3) 761 pos += 3; 762 pdu_id = packet[pos++]; 763 vendor_dependent_packet_type = (avrcp_packet_type_t)(packet[pos++] & 0x03); 764 param_length = big_endian_read_16(packet, pos); 765 pos += 2; 766 log_info("operands length %d, remaining size %d", param_length, size - pos); 767 768 if ((size - pos) < param_length) return; 769 770 // handle asynchronous notifications, without changing state 771 if (pdu_id == AVRCP_PDU_ID_REGISTER_NOTIFICATION){ 772 avrcp_controller_handle_notification(connection, ctype, packet + pos, size - pos); 773 break; 774 } 775 776 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE){ 777 log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state); 778 return; 779 } 780 connection->state = AVCTP_CONNECTION_OPENED; 781 782 log_info("VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype)); 783 switch (pdu_id){ 784 case AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE:{ 785 uint8_t num_attributes = packet[pos++]; 786 int i; 787 avrcp_repeat_mode_t repeat_mode = AVRCP_REPEAT_MODE_INVALID; 788 avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID; 789 for (i = 0; i < num_attributes; i++){ 790 uint8_t attribute_id = packet[pos++]; 791 uint8_t value = packet[pos++]; 792 switch (attribute_id){ 793 case 0x02: 794 repeat_mode = (avrcp_repeat_mode_t) value; 795 break; 796 case 0x03: 797 shuffle_mode = (avrcp_shuffle_mode_t) value; 798 break; 799 default: 800 break; 801 } 802 } 803 avrcp_controller_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode); 804 break; 805 } 806 807 case AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE:{ 808 uint16_t offset = 0; 809 uint8_t event[6]; 810 event[offset++] = HCI_EVENT_AVRCP_META; 811 event[offset++] = sizeof(event) - 2; 812 event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE; 813 little_endian_store_16(event, offset, connection->avrcp_cid); 814 offset += 2; 815 event[offset++] = ctype; 816 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 817 break; 818 } 819 820 case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{ 821 uint16_t offset = 0; 822 uint8_t event[7]; 823 event[offset++] = HCI_EVENT_AVRCP_META; 824 event[offset++] = sizeof(event) - 2; 825 event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE; 826 little_endian_store_16(event, offset, connection->avrcp_cid); 827 offset += 2; 828 event[offset++] = ctype; 829 event[offset++] = packet[pos++]; 830 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 831 break; 832 } 833 834 case AVRCP_PDU_ID_GET_CAPABILITIES:{ 835 avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++]; 836 uint8_t capability_count = packet[pos++]; 837 uint16_t i; 838 uint16_t offset = 0; 839 uint8_t event[10]; 840 841 switch (capability_id){ 842 843 case AVRCP_CAPABILITY_ID_COMPANY: 844 for (i = 0; i < capability_count; i++){ 845 uint32_t company_id = big_endian_read_24(packet, pos); 846 pos += 3; 847 log_info(" 0x%06" PRIx32 ", ", company_id); 848 849 offset = 0; 850 event[offset++] = HCI_EVENT_AVRCP_META; 851 event[offset++] = sizeof(event) - 2; 852 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID; 853 little_endian_store_16(event, offset, connection->avrcp_cid); 854 offset += 2; 855 event[offset++] = ctype; 856 event[offset++] = 0; 857 little_endian_store_24(event, offset, company_id); 858 offset += 3; 859 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 860 break; 861 } 862 863 offset = 0; 864 event[offset++] = HCI_EVENT_AVRCP_META; 865 event[offset++] = sizeof(event) - 2; 866 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE; 867 little_endian_store_16(event, offset, connection->avrcp_cid); 868 offset += 2; 869 event[offset++] = ctype; 870 event[offset++] = 0; 871 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 872 break; 873 874 case AVRCP_CAPABILITY_ID_EVENT: 875 for (i = 0; i < capability_count; i++){ 876 uint8_t event_id = packet[pos++]; 877 log_info(" 0x%02x %s", event_id, avrcp_event2str(event_id)); 878 879 offset = 0; 880 event[offset++] = HCI_EVENT_AVRCP_META; 881 event[offset++] = sizeof(event) - 2; 882 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID; 883 little_endian_store_16(event, offset, connection->avrcp_cid); 884 offset += 2; 885 event[offset++] = ctype; 886 event[offset++] = 0; 887 event[offset++] = event_id; 888 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 889 } 890 891 offset = 0; 892 event[offset++] = HCI_EVENT_AVRCP_META; 893 event[offset++] = sizeof(event) - 2; 894 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE; 895 little_endian_store_16(event, offset, connection->avrcp_cid); 896 offset += 2; 897 event[offset++] = ctype; 898 event[offset++] = 0; 899 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 900 break; 901 902 default: 903 btstack_assert(false); 904 break; 905 } 906 break; 907 } 908 909 case AVRCP_PDU_ID_GET_PLAY_STATUS:{ 910 uint32_t song_length = big_endian_read_32(packet, pos); 911 pos += 4; 912 uint32_t song_position = big_endian_read_32(packet, pos); 913 pos += 4; 914 uint8_t play_status = packet[pos]; 915 916 uint8_t event[15]; 917 int offset = 0; 918 event[offset++] = HCI_EVENT_AVRCP_META; 919 event[offset++] = sizeof(event) - 2; 920 event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS; 921 little_endian_store_16(event, offset, connection->avrcp_cid); 922 offset += 2; 923 event[offset++] = ctype; 924 little_endian_store_32(event, offset, song_length); 925 offset += 4; 926 little_endian_store_32(event, offset, song_position); 927 offset += 4; 928 event[offset++] = play_status; 929 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 930 break; 931 } 932 933 case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{ 934 switch (vendor_dependent_packet_type){ 935 case AVRCP_START_PACKET: 936 case AVRCP_SINGLE_PACKET: 937 avrcp_parser_reset(connection); 938 connection->list_size = param_length; 939 connection->num_attributes = packet[pos++]; 940 941 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 942 if (vendor_dependent_packet_type == AVRCP_START_PACKET){ 943 avrcp_controller_request_continue_response(connection); 944 } 945 break; 946 case AVRCP_CONTINUE_PACKET: 947 case AVRCP_END_PACKET: 948 connection->num_received_fragments++; 949 950 if (connection->num_received_fragments < connection->max_num_fragments){ 951 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 952 953 if (vendor_dependent_packet_type == AVRCP_CONTINUE_PACKET){ 954 avrcp_controller_request_continue_response(connection); 955 } 956 } else { 957 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1); 958 avrcp_parser_reset(connection); 959 avrcp_controller_request_abort_continuation(connection); 960 } 961 break; 962 default: 963 // TODO check 964 btstack_assert(false); 965 break; 966 } 967 } 968 default: 969 break; 970 } 971 break; 972 case AVRCP_CMD_OPCODE_PASS_THROUGH:{ 973 if ((size - pos) < 1) return; 974 uint8_t operation_id = packet[pos++]; 975 switch (connection->state){ 976 case AVCTP_W2_RECEIVE_PRESS_RESPONSE: 977 if (connection->press_and_hold_cmd){ 978 connection->state = AVCTP_W4_STOP; 979 } else { 980 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 981 } 982 break; 983 case AVCTP_W2_RECEIVE_RESPONSE: 984 connection->state = AVCTP_CONNECTION_OPENED; 985 break; 986 default: 987 break; 988 } 989 if (connection->state == AVCTP_W4_STOP){ 990 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id); 991 } 992 if (connection->state == AVCTP_CONNECTION_OPENED) { 993 // RELEASE response 994 operation_id = operation_id & 0x7F; 995 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id); 996 } 997 if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){ 998 // PRESS response 999 avrcp_controller_request_pass_through_release_control_cmd(connection); 1000 } 1001 break; 1002 } 1003 default: 1004 break; 1005 } 1006 1007 // trigger pending notification reqistrations 1008 if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->notifications_to_register){ 1009 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1010 } 1011 } 1012 1013 static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){ 1014 switch (connection->state){ 1015 case AVCTP_W2_SEND_PRESS_COMMAND: 1016 connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE; 1017 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 1018 return; 1019 case AVCTP_W2_SEND_COMMAND: 1020 case AVCTP_W2_SEND_RELEASE_COMMAND: 1021 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 1022 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 1023 return; 1024 case AVCTP_W2_SEND_FRAGMENTED_COMMAND: 1025 if (connection->cmd_operands_fragmented_pos == 0){ 1026 avrcp_send_cmd(connection, AVRCP_START_PACKET); 1027 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1028 } else { 1029 if ((connection->cmd_operands_fragmented_len - connection->cmd_operands_fragmented_pos) > avrcp_get_max_payload_size_for_packet_type(AVRCP_CONTINUE_PACKET)){ 1030 avrcp_send_cmd(connection, AVRCP_CONTINUE_PACKET); 1031 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1032 } else { 1033 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 1034 avrcp_send_cmd(connection, AVRCP_END_PACKET); 1035 } 1036 } 1037 return; 1038 default: 1039 break; 1040 } 1041 // send register notification if queued 1042 if (connection->notifications_to_register != 0){ 1043 uint8_t event_id; 1044 for (event_id = 1; event_id <= AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED; event_id++){ 1045 if (connection->notifications_to_register & (1<<event_id)){ 1046 connection->notifications_to_register &= ~ (1 << event_id); 1047 avrcp_send_register_notification(connection, event_id); 1048 return; 1049 } 1050 } 1051 } 1052 } 1053 1054 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1055 avrcp_connection_t * connection; 1056 1057 switch (packet_type) { 1058 case L2CAP_DATA_PACKET: 1059 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 1060 avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size); 1061 break; 1062 1063 case HCI_EVENT_PACKET: 1064 switch (hci_event_packet_get_type(packet)){ 1065 case L2CAP_EVENT_CAN_SEND_NOW: 1066 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 1067 avrcp_controller_handle_can_send_now(connection); 1068 break; 1069 default: 1070 break; 1071 } 1072 default: 1073 break; 1074 } 1075 } 1076 1077 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){ 1078 avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name); 1079 } 1080 1081 void avrcp_controller_init(void){ 1082 avrcp_controller_context.role = AVRCP_CONTROLLER; 1083 avrcp_controller_context.packet_handler = avrcp_controller_packet_handler; 1084 avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler); 1085 } 1086 1087 void avrcp_controller_deinit(void){ 1088 memset(&avrcp_controller_context, 0, sizeof(avrcp_context_t)); 1089 } 1090 1091 void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){ 1092 btstack_assert(callback != NULL); 1093 avrcp_controller_context.avrcp_callback = callback; 1094 } 1095 1096 1097 uint8_t avrcp_controller_play(uint16_t avrcp_cid){ 1098 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1099 } 1100 1101 uint8_t avrcp_controller_stop(uint16_t avrcp_cid){ 1102 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1103 } 1104 1105 uint8_t avrcp_controller_pause(uint16_t avrcp_cid){ 1106 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1107 } 1108 1109 uint8_t avrcp_controller_forward(uint16_t avrcp_cid){ 1110 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1111 } 1112 1113 uint8_t avrcp_controller_backward(uint16_t avrcp_cid){ 1114 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1115 } 1116 1117 uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){ 1118 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1119 } 1120 1121 uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){ 1122 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1123 } 1124 1125 uint8_t avrcp_controller_mute(uint16_t avrcp_cid){ 1126 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1127 } 1128 1129 uint8_t avrcp_controller_skip(uint16_t avrcp_cid){ 1130 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0); 1131 } 1132 1133 uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){ 1134 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1135 } 1136 1137 uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){ 1138 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1139 } 1140 1141 /* start continuous cmds */ 1142 1143 uint8_t avrcp_controller_start_press_and_hold_cmd(uint16_t avrcp_cid, avrcp_operation_id_t operation_id){ 1144 return request_continuous_pass_through_press_control_cmd(avrcp_cid, operation_id, 0); 1145 } 1146 1147 uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){ 1148 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1149 } 1150 uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){ 1151 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1152 } 1153 uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){ 1154 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1155 } 1156 uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){ 1157 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1158 } 1159 uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){ 1160 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1161 } 1162 uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){ 1163 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1164 } 1165 uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){ 1166 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1167 } 1168 uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){ 1169 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1170 } 1171 uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){ 1172 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1173 } 1174 uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){ 1175 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1176 } 1177 1178 /* stop continuous cmds */ 1179 uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){ 1180 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1181 if (!connection){ 1182 log_error("avrcp_stop_play: could not find a connection."); 1183 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1184 } 1185 if (connection->state != AVCTP_W4_STOP) return ERROR_CODE_COMMAND_DISALLOWED; 1186 return avrcp_controller_request_pass_through_release_control_cmd(connection); 1187 } 1188 1189 uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1190 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1191 if (!connection){ 1192 log_error("avrcp_get_play_status: could not find a connection."); 1193 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1194 } 1195 avrcp_controller_register_notification(connection, event_id); 1196 return ERROR_CODE_SUCCESS; 1197 } 1198 1199 uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1200 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1201 if (!connection){ 1202 log_error("avrcp_get_play_status: could not find a connection."); 1203 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1204 } 1205 connection->notifications_to_deregister |= (1 << event_id); 1206 return ERROR_CODE_SUCCESS; 1207 } 1208 1209 uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){ 1210 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1211 if (!connection){ 1212 log_error("avrcp_unit_info: could not find a connection."); 1213 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1214 } 1215 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1216 connection->state = AVCTP_W2_SEND_COMMAND; 1217 1218 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1219 connection->command_opcode = AVRCP_CMD_OPCODE_UNIT_INFO; 1220 connection->command_type = AVRCP_CTYPE_STATUS; 1221 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1222 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1223 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1224 connection->cmd_operands_length = 5; 1225 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1226 return ERROR_CODE_SUCCESS; 1227 } 1228 1229 uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){ 1230 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1231 if (!connection){ 1232 log_error("avrcp_unit_info: could not find a connection."); 1233 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1234 } 1235 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1236 connection->state = AVCTP_W2_SEND_COMMAND; 1237 1238 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1239 connection->command_opcode = AVRCP_CMD_OPCODE_SUBUNIT_INFO; 1240 connection->command_type = AVRCP_CTYPE_STATUS; 1241 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1242 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1243 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1244 connection->cmd_operands[0] = 7; // page: 0, extention_code: 7 1245 connection->cmd_operands_length = 5; 1246 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1247 return ERROR_CODE_SUCCESS; 1248 } 1249 1250 static uint8_t avrcp_controller_get_capabilities(uint16_t avrcp_cid, uint8_t capability_id){ 1251 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1252 if (!connection){ 1253 log_error("avrcp_get_capabilities: could not find a connection."); 1254 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1255 } 1256 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1257 connection->state = AVCTP_W2_SEND_COMMAND; 1258 1259 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1260 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1261 connection->command_type = AVRCP_CTYPE_STATUS; 1262 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1263 connection->subunit_id = AVRCP_SUBUNIT_ID; 1264 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1265 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CAPABILITIES; // PDU ID 1266 connection->cmd_operands[4] = 0; 1267 big_endian_store_16(connection->cmd_operands, 5, 1); // parameter length 1268 connection->cmd_operands[7] = capability_id; // capability ID 1269 connection->cmd_operands_length = 8; 1270 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1271 return ERROR_CODE_SUCCESS; 1272 } 1273 1274 uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){ 1275 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_COMPANY); 1276 } 1277 1278 uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){ 1279 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_EVENT); 1280 } 1281 1282 uint8_t avrcp_controller_get_play_status(uint16_t avrcp_cid){ 1283 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1284 if (!connection){ 1285 log_error("avrcp_get_play_status: could not find a connection."); 1286 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1287 } 1288 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1289 connection->state = AVCTP_W2_SEND_COMMAND; 1290 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1291 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1292 connection->command_type = AVRCP_CTYPE_STATUS; 1293 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1294 connection->subunit_id = AVRCP_SUBUNIT_ID; 1295 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1296 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_PLAY_STATUS; 1297 connection->cmd_operands[4] = 0; // reserved(upper 6) | packet_type -> 0 1298 big_endian_store_16(connection->cmd_operands, 5, 0); // parameter length 1299 connection->cmd_operands_length = 7; 1300 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1301 return ERROR_CODE_SUCCESS; 1302 } 1303 1304 uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){ 1305 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1306 if (!connection){ 1307 log_error("avrcp_get_capabilities: could not find a connection."); 1308 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1309 } 1310 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1311 connection->state = AVCTP_W2_SEND_COMMAND; 1312 1313 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1314 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1315 connection->command_type = AVRCP_CTYPE_CONTROL; 1316 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1317 connection->subunit_id = AVRCP_SUBUNIT_ID; 1318 int pos = 0; 1319 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1320 pos += 3; 1321 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ADDRESSED_PLAYER; // PDU ID 1322 connection->cmd_operands[pos++] = 0; 1323 1324 // Parameter Length 1325 big_endian_store_16(connection->cmd_operands, pos, 2); 1326 pos += 2; 1327 1328 big_endian_store_16(connection->cmd_operands, pos, addressed_player_id); 1329 pos += 2; 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_get_element_attributes(uint16_t avrcp_cid, uint8_t num_attributes, avrcp_media_attribute_id_t * attributes){ 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 1343 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1344 1345 if (num_attributes >= AVRCP_MEDIA_ATTR_RESERVED) { 1346 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1347 } 1348 connection->state = AVCTP_W2_SEND_COMMAND; 1349 1350 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1351 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1352 connection->command_type = AVRCP_CTYPE_STATUS; 1353 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1354 connection->subunit_id = AVRCP_SUBUNIT_ID; 1355 int pos = 0; 1356 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1357 pos += 3; 1358 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; // PDU ID 1359 connection->cmd_operands[pos++] = 0; 1360 1361 // Parameter Length 1362 big_endian_store_16(connection->cmd_operands, pos, 9); 1363 pos += 2; 1364 1365 // write 8 bytes value 1366 memset(connection->cmd_operands + pos, 0, 8); // identifier: PLAYING 1367 pos += 8; 1368 1369 connection->cmd_operands[pos++] = num_attributes; // attribute count, if 0 get all attributes 1370 1371 int i; 1372 for (i = 0; i < num_attributes; i++){ 1373 // every attribute is 4 bytes long 1374 big_endian_store_32(connection->cmd_operands, pos, attributes[i]); 1375 pos += 4; 1376 } 1377 1378 connection->cmd_operands_length = pos; 1379 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1380 return ERROR_CODE_SUCCESS; 1381 } 1382 1383 uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){ 1384 return avrcp_controller_get_element_attributes(avrcp_cid, 0, NULL); 1385 } 1386 1387 uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){ 1388 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1389 if (!connection){ 1390 log_error("avrcp_get_capabilities: could not find a connection."); 1391 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1392 } 1393 1394 // 1395 // allow sending of multiple set abs volume commands without waiting for response 1396 // 1397 uint8_t status = ERROR_CODE_COMMAND_DISALLOWED; 1398 switch (connection->state){ 1399 case AVCTP_CONNECTION_OPENED: 1400 status = ERROR_CODE_SUCCESS; 1401 break; 1402 case AVCTP_W2_RECEIVE_RESPONSE: 1403 // - is pending response also set abs volume 1404 if (connection->command_opcode != AVRCP_CMD_OPCODE_VENDOR_DEPENDENT) break; 1405 if (connection->command_type != AVRCP_CTYPE_CONTROL) break; 1406 if (connection->subunit_type != AVRCP_SUBUNIT_TYPE_PANEL) break; 1407 if (connection->subunit_id != AVRCP_SUBUNIT_ID) break; 1408 if (connection->cmd_operands[3] != AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME) break; 1409 // - is next transaction id valid in window 1410 if (avrcp_controller_is_transaction_id_valid(connection, avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter)) == false) break; 1411 status = ERROR_CODE_SUCCESS; 1412 break; 1413 default: 1414 break; 1415 } 1416 if (status != ERROR_CODE_SUCCESS) return status; 1417 1418 connection->state = AVCTP_W2_SEND_COMMAND; 1419 1420 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1421 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1422 connection->command_type = AVRCP_CTYPE_CONTROL; 1423 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1424 connection->subunit_id = AVRCP_SUBUNIT_ID; 1425 int pos = 0; 1426 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1427 pos += 3; 1428 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME; // PDU ID 1429 connection->cmd_operands[pos++] = 0; 1430 1431 // Parameter Length 1432 big_endian_store_16(connection->cmd_operands, pos, 1); 1433 pos += 2; 1434 connection->cmd_operands[pos++] = volume; 1435 1436 connection->cmd_operands_length = pos; 1437 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1438 return ERROR_CODE_SUCCESS; 1439 } 1440 1441 uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){ 1442 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1443 if (!connection){ 1444 log_error("avrcp_get_capabilities: could not find a connection."); 1445 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1446 } 1447 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1448 connection->state = AVCTP_W2_SEND_COMMAND; 1449 1450 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1451 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1452 connection->command_type = AVRCP_CTYPE_STATUS; 1453 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1454 connection->subunit_id = AVRCP_SUBUNIT_ID; 1455 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1456 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID 1457 connection->cmd_operands[4] = 0; 1458 big_endian_store_16(connection->cmd_operands, 5, 5); // parameter length 1459 connection->cmd_operands[7] = 4; // NumPlayerApplicationSettingAttributeID 1460 // PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133 1461 connection->cmd_operands[8] = 0x01; // equalizer (1-OFF, 2-ON) 1462 connection->cmd_operands[9] = 0x02; // repeat (1-off, 2-single track, 3-all tracks, 4-group repeat) 1463 connection->cmd_operands[10] = 0x03; // shuffle (1-off, 2-all tracks, 3-group shuffle) 1464 connection->cmd_operands[11] = 0x04; // scan (1-off, 2-all tracks, 3-group scan) 1465 connection->cmd_operands_length = 12; 1466 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1467 return ERROR_CODE_SUCCESS; 1468 } 1469 1470 static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){ 1471 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1472 if (!connection){ 1473 log_error("avrcp_get_capabilities: could not find a connection."); 1474 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1475 } 1476 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1477 connection->state = AVCTP_W2_SEND_COMMAND; 1478 1479 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1480 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1481 connection->command_type = AVRCP_CTYPE_CONTROL; 1482 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1483 connection->subunit_id = AVRCP_SUBUNIT_ID; 1484 int pos = 0; 1485 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1486 pos += 3; 1487 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID 1488 connection->cmd_operands[pos++] = 0; 1489 // Parameter Length 1490 big_endian_store_16(connection->cmd_operands, pos, 3); 1491 pos += 2; 1492 connection->cmd_operands[pos++] = 2; 1493 connection->cmd_operands_length = pos; 1494 connection->cmd_operands[pos++] = attr_id; 1495 connection->cmd_operands[pos++] = attr_value; 1496 connection->cmd_operands_length = pos; 1497 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1498 return ERROR_CODE_SUCCESS; 1499 } 1500 1501 uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){ 1502 if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1503 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode); 1504 } 1505 1506 uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){ 1507 if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1508 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode); 1509 } 1510 1511 uint8_t avrcp_controller_play_item_for_scope(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_PLAY_ITEM; // 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_add_item_from_scope_to_now_playing_list(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){ 1552 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1553 if (!connection){ 1554 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1555 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1556 } 1557 if (connection->state != AVCTP_CONNECTION_OPENED){ 1558 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1559 return ERROR_CODE_COMMAND_DISALLOWED; 1560 } 1561 connection->state = AVCTP_W2_SEND_COMMAND; 1562 1563 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1564 connection->command_type = AVRCP_CTYPE_CONTROL; 1565 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1566 connection->subunit_id = AVRCP_SUBUNIT_ID; 1567 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1568 int pos = 0; 1569 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1570 pos += 3; 1571 connection->cmd_operands[pos++] = AVRCP_PDU_ID_ADD_TO_NOW_PLAYING; // PDU ID 1572 // reserved 1573 connection->cmd_operands[pos++] = 0; 1574 // Parameter Length 1575 big_endian_store_16(connection->cmd_operands, pos, 11); 1576 pos += 2; 1577 connection->cmd_operands[pos++] = scope; 1578 memset(&connection->cmd_operands[pos], 0, 8); 1579 if (uid){ 1580 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1581 } 1582 pos += 8; 1583 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1584 pos += 2; 1585 connection->cmd_operands_length = pos; 1586 1587 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1588 return ERROR_CODE_SUCCESS; 1589 } 1590 1591 uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){ 1592 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1593 if (!connection){ 1594 log_error("avrcp_controller_play_item: could not find a connection."); 1595 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1596 } 1597 connection->max_num_fragments = max_num_fragments; 1598 return ERROR_CODE_SUCCESS; 1599 } 1600 1601 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){ 1602 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1603 if (!connection){ 1604 log_error("avrcp_controller_play_item: could not find a connection."); 1605 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1606 } 1607 1608 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1609 connection->state = AVCTP_W2_SEND_FRAGMENTED_COMMAND; 1610 1611 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 1612 connection->command_opcode = command_opcode; 1613 connection->command_type = command_type; 1614 connection->subunit_type = subunit_type; 1615 connection->subunit_id = subunit_id; 1616 connection->cmd_operands_fragmented_buffer = command_buffer; 1617 connection->cmd_operands_fragmented_pos = 0; 1618 connection->cmd_operands_fragmented_len = command_len; 1619 1620 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1621 return ERROR_CODE_SUCCESS; 1622 } 1623