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 } 72 return 0; 73 } 74 75 static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){ 76 return controller_supported_features & AVRCP_FEATURE_MASK_BROWSING; 77 } 78 79 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){ 80 switch (event_id){ 81 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{ 82 uint32_t song_position = big_endian_read_32(payload, 0); 83 uint16_t offset = 0; 84 uint8_t event[10]; 85 event[offset++] = HCI_EVENT_AVRCP_META; 86 event[offset++] = sizeof(event) - 2; 87 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED; 88 little_endian_store_16(event, offset, avrcp_cid); 89 offset += 2; 90 event[offset++] = ctype; 91 little_endian_store_32(event, offset, song_position); 92 offset += 4; 93 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 94 break; 95 } 96 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{ 97 uint16_t offset = 0; 98 uint8_t event[7]; 99 event[offset++] = HCI_EVENT_AVRCP_META; 100 event[offset++] = sizeof(event) - 2; 101 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED; 102 little_endian_store_16(event, offset, avrcp_cid); 103 offset += 2; 104 event[offset++] = ctype; 105 event[offset++] = payload[0]; 106 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 107 break; 108 } 109 case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{ 110 uint16_t offset = 0; 111 uint8_t event[6]; 112 event[offset++] = HCI_EVENT_AVRCP_META; 113 event[offset++] = sizeof(event) - 2; 114 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED; 115 little_endian_store_16(event, offset, avrcp_cid); 116 offset += 2; 117 event[offset++] = ctype; 118 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 119 break; 120 } 121 case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{ 122 uint16_t offset = 0; 123 uint8_t event[6]; 124 event[offset++] = HCI_EVENT_AVRCP_META; 125 event[offset++] = sizeof(event) - 2; 126 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED; 127 little_endian_store_16(event, offset, avrcp_cid); 128 offset += 2; 129 event[offset++] = ctype; 130 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 131 break; 132 } 133 case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{ 134 uint16_t offset = 0; 135 uint8_t event[6]; 136 event[offset++] = HCI_EVENT_AVRCP_META; 137 event[offset++] = sizeof(event) - 2; 138 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED; 139 little_endian_store_16(event, offset, avrcp_cid); 140 offset += 2; 141 event[offset++] = ctype; 142 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 143 break; 144 } 145 case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{ 146 uint16_t offset = 0; 147 uint8_t event[7]; 148 event[offset++] = HCI_EVENT_AVRCP_META; 149 event[offset++] = sizeof(event) - 2; 150 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED; 151 little_endian_store_16(event, offset, avrcp_cid); 152 offset += 2; 153 event[offset++] = ctype; 154 event[offset++] = payload[0] & 0x7F; 155 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 156 break; 157 } 158 case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{ 159 uint8_t event[8]; 160 uint16_t offset = 0; 161 uint16_t uuid = big_endian_read_16(payload, 0); 162 event[offset++] = HCI_EVENT_AVRCP_META; 163 event[offset++] = sizeof(event) - 2; 164 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED; 165 little_endian_store_16(event, offset, avrcp_cid); 166 offset += 2; 167 event[offset++] = ctype; 168 little_endian_store_16(event, offset, uuid); 169 offset += 2; 170 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 171 break; 172 } 173 174 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{ 175 uint16_t offset = 0; 176 uint8_t event[6]; 177 event[offset++] = HCI_EVENT_AVRCP_META; 178 event[offset++] = sizeof(event) - 2; 179 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END; 180 little_endian_store_16(event, offset, avrcp_cid); 181 offset += 2; 182 event[offset++] = ctype; 183 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 184 break; 185 } 186 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{ 187 uint16_t offset = 0; 188 uint8_t event[6]; 189 event[offset++] = HCI_EVENT_AVRCP_META; 190 event[offset++] = sizeof(event) - 2; 191 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START; 192 little_endian_store_16(event, offset, avrcp_cid); 193 offset += 2; 194 event[offset++] = ctype; 195 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 196 break; 197 } 198 case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{ 199 uint16_t offset = 0; 200 uint8_t event[7]; 201 event[offset++] = HCI_EVENT_AVRCP_META; 202 event[offset++] = sizeof(event) - 2; 203 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED; 204 little_endian_store_16(event, offset, avrcp_cid); 205 offset += 2; 206 event[offset++] = ctype; 207 event[offset++] = payload[0]; 208 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 209 break; 210 } 211 212 case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{ 213 uint16_t offset = 0; 214 uint8_t event[7]; 215 event[offset++] = HCI_EVENT_AVRCP_META; 216 event[offset++] = sizeof(event) - 2; 217 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED; 218 little_endian_store_16(event, offset, avrcp_cid); 219 offset += 2; 220 event[offset++] = ctype; 221 event[offset++] = payload[0]; 222 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 223 break; 224 } 225 226 case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED: 227 default: 228 log_info("avrcp: not implemented"); 229 break; 230 } 231 } 232 233 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){ 234 btstack_assert(callback != NULL); 235 236 uint8_t event[8]; 237 int pos = 0; 238 event[pos++] = HCI_EVENT_AVRCP_META; 239 event[pos++] = sizeof(event) - 2; 240 event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE; 241 little_endian_store_16(event, pos, avrcp_cid); 242 pos += 2; 243 event[pos++] = ctype; 244 event[pos++] = repeat_mode; 245 event[pos++] = shuffle_mode; 246 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 247 } 248 249 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){ 250 uint8_t event[7]; 251 int pos = 0; 252 event[pos++] = HCI_EVENT_AVRCP_META; 253 event[pos++] = sizeof(event) - 2; 254 event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE; 255 little_endian_store_16(event, pos, avrcp_cid); 256 pos += 2; 257 event[pos++] = ctype; 258 event[pos++] = status; 259 // printf_hexdump(event, pos); 260 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 261 } 262 263 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){ 264 uint8_t event[HCI_EVENT_BUFFER_SIZE]; 265 int pos = 0; 266 event[pos++] = HCI_EVENT_AVRCP_META; 267 // reserve one byte for subevent type and data len 268 int data_len_pos = pos; 269 pos++; 270 int subevent_type_pos = pos; 271 pos++; 272 little_endian_store_16(event, pos, avrcp_cid); 273 pos += 2; 274 event[pos++] = ctype; 275 276 switch (attr_id){ 277 case AVRCP_MEDIA_ATTR_TITLE: 278 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO; 279 event[pos++] = value_len; 280 (void)memcpy(event + pos, value, value_len); 281 break; 282 case AVRCP_MEDIA_ATTR_ARTIST: 283 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO; 284 event[pos++] = value_len; 285 (void)memcpy(event + pos, value, value_len); 286 break; 287 case AVRCP_MEDIA_ATTR_ALBUM: 288 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO; 289 event[pos++] = value_len; 290 (void)memcpy(event + pos, value, value_len); 291 break; 292 case AVRCP_MEDIA_ATTR_GENRE: 293 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO; 294 event[pos++] = value_len; 295 (void)memcpy(event + pos, value, value_len); 296 break; 297 case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS: 298 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO; 299 if (value){ 300 little_endian_store_32(event, pos, btstack_atoi((char *)value)); 301 } else { 302 little_endian_store_32(event, pos, 0); 303 } 304 pos += 4; 305 break; 306 case AVRCP_MEDIA_ATTR_TRACK: 307 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO; 308 if (value){ 309 event[pos++] = btstack_atoi((char *)value); 310 } else { 311 event[pos++] = 0; 312 } 313 break; 314 case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS: 315 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO; 316 if (value){ 317 event[pos++] = btstack_atoi((char *)value); 318 } else { 319 event[pos++] = 0; 320 } 321 break; 322 default: 323 break; 324 } 325 event[data_len_pos] = pos - 2; 326 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 327 } 328 329 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){ 330 btstack_assert(callback != NULL); 331 332 uint8_t event[7]; 333 int pos = 0; 334 event[pos++] = HCI_EVENT_AVRCP_META; 335 event[pos++] = sizeof(event) - 2; 336 event[pos++] = subevent; 337 little_endian_store_16(event, pos, avrcp_cid); 338 pos += 2; 339 event[pos++] = ctype; 340 event[pos++] = operation_id; 341 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 342 } 343 344 static void avrcp_parser_reset(avrcp_connection_t * connection){ 345 connection->list_offset = 0; 346 connection->num_attributes = 0; 347 connection->num_parsed_attributes = 0; 348 connection->parser_attribute_header_pos = 0; 349 connection->num_received_fragments = 0; 350 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 351 } 352 353 static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){ 354 uint16_t attribute_total_value_len; 355 uint32_t attribute_id; 356 // printf("avrcp_parser_process_byte: %02x, state %02x\n", byte, connection->parser_state); 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 uint8_t byte_value = packet[pos++]; 690 avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3); 691 avrcp_subunit_type_t subunit_id = (avrcp_subunit_type_t) (byte_value & 0x07); 692 uint8_t opcode = packet[pos++]; 693 694 uint16_t param_length; 695 696 switch (opcode){ 697 case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{ 698 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 699 connection->state = AVCTP_CONNECTION_OPENED; 700 // page, extention code (1) 701 pos++; 702 uint8_t unit_type = packet[pos] >> 3; 703 uint8_t max_subunit_ID = packet[pos] & 0x07; 704 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); 705 break; 706 } 707 case AVRCP_CMD_OPCODE_UNIT_INFO:{ 708 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 709 connection->state = AVCTP_CONNECTION_OPENED; 710 // byte value 7 (1) 711 pos++; 712 uint8_t unit_type = packet[pos] >> 3; 713 uint8_t unit = packet[pos] & 0x07; 714 pos++; 715 uint32_t company_id = big_endian_read_24(packet, pos); 716 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, 717 ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id); 718 break; 719 } 720 case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT: 721 // Company ID (3) 722 pos += 3; 723 pdu_id = packet[pos++]; 724 // packet type (1) 725 pos++; 726 param_length = big_endian_read_16(packet, pos); 727 pos += 2; 728 log_info("operands length %d, remaining size %d", param_length, size - pos); 729 730 if ((size - pos) < param_length) { 731 log_error("Wrong packet size %d < %d", size - pos, param_length); 732 return; 733 }; 734 735 // handle asynchronous notifications, without changing state 736 if (pdu_id == AVRCP_PDU_ID_REGISTER_NOTIFICATION){ 737 avrcp_controller_handle_notification(connection, ctype, packet+pos); 738 break; 739 } 740 741 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE){ 742 log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state); 743 return; 744 } 745 connection->state = AVCTP_CONNECTION_OPENED; 746 747 log_info("VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype)); 748 switch (pdu_id){ 749 case AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE:{ 750 uint8_t num_attributes = packet[pos++]; 751 int i; 752 avrcp_repeat_mode_t repeat_mode = AVRCP_REPEAT_MODE_INVALID; 753 avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID; 754 for (i = 0; i < num_attributes; i++){ 755 uint8_t attribute_id = packet[pos++]; 756 uint8_t value = packet[pos++]; 757 switch (attribute_id){ 758 case 0x02: 759 repeat_mode = (avrcp_repeat_mode_t) value; 760 break; 761 case 0x03: 762 shuffle_mode = (avrcp_shuffle_mode_t) value; 763 break; 764 default: 765 break; 766 } 767 } 768 avrcp_controller_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode); 769 break; 770 } 771 772 case AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE:{ 773 uint16_t offset = 0; 774 uint8_t event[6]; 775 event[offset++] = HCI_EVENT_AVRCP_META; 776 event[offset++] = sizeof(event) - 2; 777 event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE; 778 little_endian_store_16(event, offset, connection->avrcp_cid); 779 offset += 2; 780 event[offset++] = ctype; 781 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 782 break; 783 } 784 785 case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{ 786 uint16_t offset = 0; 787 uint8_t event[7]; 788 event[offset++] = HCI_EVENT_AVRCP_META; 789 event[offset++] = sizeof(event) - 2; 790 event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE; 791 little_endian_store_16(event, offset, connection->avrcp_cid); 792 offset += 2; 793 event[offset++] = ctype; 794 event[offset++] = packet[pos++]; 795 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 796 break; 797 } 798 799 case AVRCP_PDU_ID_GET_CAPABILITIES:{ 800 avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++]; 801 uint8_t capability_count = packet[pos++]; 802 uint16_t i; 803 uint16_t offset = 0; 804 uint8_t event[10]; 805 806 switch (capability_id){ 807 808 case AVRCP_CAPABILITY_ID_COMPANY: 809 for (i = 0; i < capability_count; i++){ 810 uint32_t company_id = big_endian_read_24(packet, pos); 811 pos += 3; 812 log_info(" 0x%06" PRIx32 ", ", company_id); 813 814 offset = 0; 815 event[offset++] = HCI_EVENT_AVRCP_META; 816 event[offset++] = sizeof(event) - 2; 817 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID; 818 little_endian_store_16(event, offset, connection->avrcp_cid); 819 offset += 2; 820 event[offset++] = ctype; 821 event[offset++] = 0; 822 little_endian_store_24(event, offset, company_id); 823 offset += 3; 824 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 825 break; 826 } 827 828 offset = 0; 829 event[offset++] = HCI_EVENT_AVRCP_META; 830 event[offset++] = sizeof(event) - 2; 831 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE; 832 little_endian_store_16(event, offset, connection->avrcp_cid); 833 offset += 2; 834 event[offset++] = ctype; 835 event[offset++] = 0; 836 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 837 break; 838 839 case AVRCP_CAPABILITY_ID_EVENT: 840 for (i = 0; i < capability_count; i++){ 841 uint8_t event_id = packet[pos++]; 842 log_info(" 0x%02x %s", event_id, avrcp_event2str(event_id)); 843 844 offset = 0; 845 event[offset++] = HCI_EVENT_AVRCP_META; 846 event[offset++] = sizeof(event) - 2; 847 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID; 848 little_endian_store_16(event, offset, connection->avrcp_cid); 849 offset += 2; 850 event[offset++] = ctype; 851 event[offset++] = 0; 852 event[offset++] = event_id; 853 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 854 } 855 856 offset = 0; 857 event[offset++] = HCI_EVENT_AVRCP_META; 858 event[offset++] = sizeof(event) - 2; 859 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE; 860 little_endian_store_16(event, offset, connection->avrcp_cid); 861 offset += 2; 862 event[offset++] = ctype; 863 event[offset++] = 0; 864 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 865 break; 866 } 867 break; 868 } 869 870 case AVRCP_PDU_ID_GET_PLAY_STATUS:{ 871 uint32_t song_length = big_endian_read_32(packet, pos); 872 pos += 4; 873 uint32_t song_position = big_endian_read_32(packet, pos); 874 pos += 4; 875 uint8_t play_status = packet[pos]; 876 877 uint8_t event[15]; 878 int offset = 0; 879 event[offset++] = HCI_EVENT_AVRCP_META; 880 event[offset++] = sizeof(event) - 2; 881 event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS; 882 little_endian_store_16(event, offset, connection->avrcp_cid); 883 offset += 2; 884 event[offset++] = ctype; 885 little_endian_store_32(event, offset, song_length); 886 offset += 4; 887 little_endian_store_32(event, offset, song_position); 888 offset += 4; 889 event[offset++] = play_status; 890 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 891 break; 892 } 893 894 case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{ 895 switch (packet_type){ 896 case AVRCP_START_PACKET: 897 case AVRCP_SINGLE_PACKET: 898 avrcp_parser_reset(connection); 899 connection->list_size = param_length; 900 connection->num_attributes = packet[pos++]; 901 902 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 903 904 if (packet_type == AVRCP_START_PACKET){ 905 avrcp_controller_request_continue_response(connection); 906 } 907 break; 908 case AVRCP_CONTINUE_PACKET: 909 case AVRCP_END_PACKET: 910 connection->num_received_fragments++; 911 if (connection->num_received_fragments < connection->max_num_fragments){ 912 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 913 if (packet_type == AVRCP_CONTINUE_PACKET){ 914 avrcp_controller_request_continue_response(connection); 915 } 916 } else { 917 avrcp_controller_request_abort_continuation(connection); 918 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1); 919 avrcp_parser_reset(connection); 920 } 921 break; 922 } 923 } 924 default: 925 break; 926 } 927 break; 928 case AVRCP_CMD_OPCODE_PASS_THROUGH:{ 929 uint8_t operation_id = packet[pos++]; 930 switch (connection->state){ 931 case AVCTP_W2_RECEIVE_PRESS_RESPONSE: 932 if (connection->continuous_fast_forward_cmd){ 933 connection->state = AVCTP_W4_STOP; 934 } else { 935 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 936 } 937 break; 938 case AVCTP_W2_RECEIVE_RESPONSE: 939 connection->state = AVCTP_CONNECTION_OPENED; 940 break; 941 default: 942 break; 943 } 944 if (connection->state == AVCTP_W4_STOP){ 945 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id); 946 } 947 if (connection->state == AVCTP_CONNECTION_OPENED) { 948 // RELEASE response 949 operation_id = operation_id & 0x7F; 950 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id); 951 } 952 if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){ 953 // PRESS response 954 avrcp_controller_request_pass_through_release_control_cmd(connection); 955 } 956 break; 957 } 958 default: 959 break; 960 } 961 962 // trigger pending notification reqistrations 963 if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->notifications_to_register){ 964 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 965 } 966 } 967 968 static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){ 969 switch (connection->state){ 970 case AVCTP_W2_SEND_PRESS_COMMAND: 971 connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE; 972 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 973 return; 974 case AVCTP_W2_SEND_COMMAND: 975 case AVCTP_W2_SEND_RELEASE_COMMAND: 976 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 977 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 978 return; 979 case AVCTP_W2_SEND_FRAGMENTED_COMMAND: 980 if (connection->cmd_operands_fragmented_pos == 0){ 981 avrcp_send_cmd(connection, AVRCP_START_PACKET); 982 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 983 } else { 984 if ((connection->cmd_operands_fragmented_len - connection->cmd_operands_fragmented_pos) > avrcp_get_max_payload_size_for_packet_type(AVRCP_CONTINUE_PACKET)){ 985 avrcp_send_cmd(connection, AVRCP_CONTINUE_PACKET); 986 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 987 } else { 988 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 989 avrcp_send_cmd(connection, AVRCP_END_PACKET); 990 } 991 } 992 return; 993 default: 994 break; 995 } 996 // send register notification if queued 997 if (connection->notifications_to_register != 0){ 998 uint8_t event_id; 999 for (event_id = 1; event_id <= AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED; event_id++){ 1000 if (connection->notifications_to_register & (1<<event_id)){ 1001 connection->notifications_to_register &= ~ (1 << event_id); 1002 avrcp_send_register_notification(connection, event_id); 1003 return; 1004 } 1005 } 1006 } 1007 } 1008 1009 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1010 avrcp_connection_t * connection; 1011 1012 switch (packet_type) { 1013 case L2CAP_DATA_PACKET: 1014 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 1015 avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size); 1016 break; 1017 1018 case HCI_EVENT_PACKET: 1019 switch (hci_event_packet_get_type(packet)){ 1020 case L2CAP_EVENT_CAN_SEND_NOW: 1021 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 1022 avrcp_controller_handle_can_send_now(connection); 1023 break; 1024 default: 1025 break; 1026 } 1027 default: 1028 break; 1029 } 1030 } 1031 1032 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){ 1033 avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name); 1034 } 1035 1036 void avrcp_controller_init(void){ 1037 avrcp_controller_context.role = AVRCP_CONTROLLER; 1038 avrcp_controller_context.packet_handler = avrcp_controller_packet_handler; 1039 avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler); 1040 } 1041 1042 void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){ 1043 btstack_assert(callback != NULL); 1044 avrcp_controller_context.avrcp_callback = callback; 1045 } 1046 1047 1048 uint8_t avrcp_controller_play(uint16_t avrcp_cid){ 1049 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1050 } 1051 1052 uint8_t avrcp_controller_stop(uint16_t avrcp_cid){ 1053 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1054 } 1055 1056 uint8_t avrcp_controller_pause(uint16_t avrcp_cid){ 1057 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1058 } 1059 1060 uint8_t avrcp_controller_forward(uint16_t avrcp_cid){ 1061 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1062 } 1063 1064 uint8_t avrcp_controller_backward(uint16_t avrcp_cid){ 1065 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1066 } 1067 1068 uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){ 1069 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1070 } 1071 1072 uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){ 1073 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1074 } 1075 1076 uint8_t avrcp_controller_mute(uint16_t avrcp_cid){ 1077 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1078 } 1079 1080 uint8_t avrcp_controller_skip(uint16_t avrcp_cid){ 1081 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0); 1082 } 1083 1084 uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){ 1085 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1086 } 1087 1088 uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){ 1089 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1090 } 1091 1092 /* start continuous cmds */ 1093 1094 uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){ 1095 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1096 } 1097 uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){ 1098 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1099 } 1100 uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){ 1101 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1102 } 1103 uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){ 1104 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1105 } 1106 uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){ 1107 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1108 } 1109 uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){ 1110 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1111 } 1112 uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){ 1113 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1114 } 1115 uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){ 1116 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1117 } 1118 uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){ 1119 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1120 } 1121 uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){ 1122 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1123 } 1124 1125 /* stop continuous cmds */ 1126 uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){ 1127 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1128 if (!connection){ 1129 log_error("avrcp_stop_play: could not find a connection."); 1130 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1131 } 1132 if (connection->state != AVCTP_W4_STOP) return ERROR_CODE_COMMAND_DISALLOWED; 1133 return avrcp_controller_request_pass_through_release_control_cmd(connection); 1134 } 1135 1136 uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1137 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1138 if (!connection){ 1139 log_error("avrcp_get_play_status: could not find a connection."); 1140 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1141 } 1142 avrcp_controller_register_notification(connection, event_id); 1143 return ERROR_CODE_SUCCESS; 1144 } 1145 1146 uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1147 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1148 if (!connection){ 1149 log_error("avrcp_get_play_status: could not find a connection."); 1150 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1151 } 1152 connection->notifications_to_deregister |= (1 << event_id); 1153 return ERROR_CODE_SUCCESS; 1154 } 1155 1156 uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){ 1157 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1158 if (!connection){ 1159 log_error("avrcp_unit_info: could not find a connection."); 1160 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1161 } 1162 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1163 connection->state = AVCTP_W2_SEND_COMMAND; 1164 1165 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1166 connection->command_opcode = AVRCP_CMD_OPCODE_UNIT_INFO; 1167 connection->command_type = AVRCP_CTYPE_STATUS; 1168 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1169 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1170 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1171 connection->cmd_operands_length = 5; 1172 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1173 return ERROR_CODE_SUCCESS; 1174 } 1175 1176 uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){ 1177 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1178 if (!connection){ 1179 log_error("avrcp_unit_info: could not find a connection."); 1180 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1181 } 1182 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1183 connection->state = AVCTP_W2_SEND_COMMAND; 1184 1185 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1186 connection->command_opcode = AVRCP_CMD_OPCODE_SUBUNIT_INFO; 1187 connection->command_type = AVRCP_CTYPE_STATUS; 1188 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1189 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1190 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1191 connection->cmd_operands[0] = 7; // page: 0, extention_code: 7 1192 connection->cmd_operands_length = 5; 1193 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1194 return ERROR_CODE_SUCCESS; 1195 } 1196 1197 static uint8_t avrcp_controller_get_capabilities(uint16_t avrcp_cid, uint8_t capability_id){ 1198 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1199 if (!connection){ 1200 log_error("avrcp_get_capabilities: could not find a connection."); 1201 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1202 } 1203 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1204 connection->state = AVCTP_W2_SEND_COMMAND; 1205 1206 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1207 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1208 connection->command_type = AVRCP_CTYPE_STATUS; 1209 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1210 connection->subunit_id = AVRCP_SUBUNIT_ID; 1211 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1212 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CAPABILITIES; // PDU ID 1213 connection->cmd_operands[4] = 0; 1214 big_endian_store_16(connection->cmd_operands, 5, 1); // parameter length 1215 connection->cmd_operands[7] = capability_id; // capability ID 1216 connection->cmd_operands_length = 8; 1217 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1218 return ERROR_CODE_SUCCESS; 1219 } 1220 1221 uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){ 1222 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_COMPANY); 1223 } 1224 1225 uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){ 1226 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_EVENT); 1227 } 1228 1229 uint8_t avrcp_controller_get_play_status(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_get_play_status: 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 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1238 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1239 connection->command_type = AVRCP_CTYPE_STATUS; 1240 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1241 connection->subunit_id = AVRCP_SUBUNIT_ID; 1242 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1243 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_PLAY_STATUS; 1244 connection->cmd_operands[4] = 0; // reserved(upper 6) | packet_type -> 0 1245 big_endian_store_16(connection->cmd_operands, 5, 0); // parameter length 1246 connection->cmd_operands_length = 7; 1247 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1248 return ERROR_CODE_SUCCESS; 1249 } 1250 1251 uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){ 1252 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1253 if (!connection){ 1254 log_error("avrcp_get_capabilities: could not find a connection."); 1255 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1256 } 1257 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1258 connection->state = AVCTP_W2_SEND_COMMAND; 1259 1260 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1261 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1262 connection->command_type = AVRCP_CTYPE_CONTROL; 1263 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1264 connection->subunit_id = AVRCP_SUBUNIT_ID; 1265 int pos = 0; 1266 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1267 pos += 3; 1268 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ADDRESSED_PLAYER; // PDU ID 1269 connection->cmd_operands[pos++] = 0; 1270 1271 // Parameter Length 1272 big_endian_store_16(connection->cmd_operands, pos, 2); 1273 pos += 2; 1274 1275 big_endian_store_16(connection->cmd_operands, pos, addressed_player_id); 1276 pos += 2; 1277 1278 connection->cmd_operands_length = pos; 1279 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1280 return ERROR_CODE_SUCCESS; 1281 } 1282 1283 uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){ 1284 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1285 if (!connection){ 1286 log_error("avrcp_get_capabilities: could not find a connection."); 1287 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1288 } 1289 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1290 connection->state = AVCTP_W2_SEND_COMMAND; 1291 1292 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1293 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1294 connection->command_type = AVRCP_CTYPE_STATUS; 1295 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1296 connection->subunit_id = AVRCP_SUBUNIT_ID; 1297 int pos = 0; 1298 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1299 pos += 3; 1300 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; // PDU ID 1301 connection->cmd_operands[pos++] = 0; 1302 1303 // Parameter Length 1304 big_endian_store_16(connection->cmd_operands, pos, 9); 1305 pos += 2; 1306 1307 // write 8 bytes value 1308 memset(connection->cmd_operands + pos, 0, 8); // identifier: PLAYING 1309 pos += 8; 1310 1311 connection->cmd_operands[pos++] = 0; // attribute count, if 0 get all attributes 1312 // every attribute is 4 bytes long 1313 1314 connection->cmd_operands_length = pos; 1315 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1316 return ERROR_CODE_SUCCESS; 1317 } 1318 1319 uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){ 1320 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1321 if (!connection){ 1322 log_error("avrcp_get_capabilities: could not find a connection."); 1323 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1324 } 1325 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1326 connection->state = AVCTP_W2_SEND_COMMAND; 1327 1328 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1329 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1330 connection->command_type = AVRCP_CTYPE_CONTROL; 1331 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1332 connection->subunit_id = AVRCP_SUBUNIT_ID; 1333 int pos = 0; 1334 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1335 pos += 3; 1336 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME; // PDU ID 1337 connection->cmd_operands[pos++] = 0; 1338 1339 // Parameter Length 1340 big_endian_store_16(connection->cmd_operands, pos, 1); 1341 pos += 2; 1342 connection->cmd_operands[pos++] = volume; 1343 1344 connection->cmd_operands_length = pos; 1345 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1346 return ERROR_CODE_SUCCESS; 1347 } 1348 1349 uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){ 1350 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1351 if (!connection){ 1352 log_error("avrcp_get_capabilities: could not find a connection."); 1353 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1354 } 1355 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1356 connection->state = AVCTP_W2_SEND_COMMAND; 1357 1358 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1359 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1360 connection->command_type = AVRCP_CTYPE_STATUS; 1361 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1362 connection->subunit_id = AVRCP_SUBUNIT_ID; 1363 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1364 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID 1365 connection->cmd_operands[4] = 0; 1366 big_endian_store_16(connection->cmd_operands, 5, 5); // parameter length 1367 connection->cmd_operands[7] = 4; // NumPlayerApplicationSettingAttributeID 1368 // PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133 1369 connection->cmd_operands[8] = 0x01; // equalizer (1-OFF, 2-ON) 1370 connection->cmd_operands[9] = 0x02; // repeat (1-off, 2-single track, 3-all tracks, 4-group repeat) 1371 connection->cmd_operands[10] = 0x03; // shuffle (1-off, 2-all tracks, 3-group shuffle) 1372 connection->cmd_operands[11] = 0x04; // scan (1-off, 2-all tracks, 3-group scan) 1373 connection->cmd_operands_length = 12; 1374 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1375 return ERROR_CODE_SUCCESS; 1376 } 1377 1378 static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){ 1379 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1380 if (!connection){ 1381 log_error("avrcp_get_capabilities: could not find a connection."); 1382 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1383 } 1384 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1385 connection->state = AVCTP_W2_SEND_COMMAND; 1386 1387 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1388 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1389 connection->command_type = AVRCP_CTYPE_CONTROL; 1390 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1391 connection->subunit_id = AVRCP_SUBUNIT_ID; 1392 int pos = 0; 1393 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1394 pos += 3; 1395 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID 1396 connection->cmd_operands[pos++] = 0; 1397 // Parameter Length 1398 big_endian_store_16(connection->cmd_operands, pos, 3); 1399 pos += 2; 1400 connection->cmd_operands[pos++] = 2; 1401 connection->cmd_operands_length = pos; 1402 connection->cmd_operands[pos++] = attr_id; 1403 connection->cmd_operands[pos++] = attr_value; 1404 connection->cmd_operands_length = pos; 1405 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1406 return ERROR_CODE_SUCCESS; 1407 } 1408 1409 uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){ 1410 if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1411 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode); 1412 } 1413 1414 uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){ 1415 if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1416 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode); 1417 } 1418 1419 uint8_t avrcp_controller_play_item_for_scope(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){ 1420 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1421 if (!connection){ 1422 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1423 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1424 } 1425 if (connection->state != AVCTP_CONNECTION_OPENED){ 1426 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1427 return ERROR_CODE_COMMAND_DISALLOWED; 1428 } 1429 connection->state = AVCTP_W2_SEND_COMMAND; 1430 1431 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1432 connection->command_type = AVRCP_CTYPE_CONTROL; 1433 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1434 connection->subunit_id = AVRCP_SUBUNIT_ID; 1435 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1436 int pos = 0; 1437 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1438 pos += 3; 1439 connection->cmd_operands[pos++] = AVRCP_PDU_ID_PLAY_ITEM; // PDU ID 1440 // reserved 1441 connection->cmd_operands[pos++] = 0; 1442 // Parameter Length 1443 big_endian_store_16(connection->cmd_operands, pos, 11); 1444 pos += 2; 1445 connection->cmd_operands[pos++] = scope; 1446 memset(&connection->cmd_operands[pos], 0, 8); 1447 if (uid){ 1448 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1449 } 1450 pos += 8; 1451 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1452 pos += 2; 1453 connection->cmd_operands_length = pos; 1454 1455 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1456 return ERROR_CODE_SUCCESS; 1457 } 1458 1459 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){ 1460 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1461 if (!connection){ 1462 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1463 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1464 } 1465 if (connection->state != AVCTP_CONNECTION_OPENED){ 1466 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1467 return ERROR_CODE_COMMAND_DISALLOWED; 1468 } 1469 connection->state = AVCTP_W2_SEND_COMMAND; 1470 1471 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1472 connection->command_type = AVRCP_CTYPE_CONTROL; 1473 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1474 connection->subunit_id = AVRCP_SUBUNIT_ID; 1475 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1476 int pos = 0; 1477 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1478 pos += 3; 1479 connection->cmd_operands[pos++] = AVRCP_PDU_ID_ADD_TO_NOW_PLAYING; // PDU ID 1480 // reserved 1481 connection->cmd_operands[pos++] = 0; 1482 // Parameter Length 1483 big_endian_store_16(connection->cmd_operands, pos, 11); 1484 pos += 2; 1485 connection->cmd_operands[pos++] = scope; 1486 memset(&connection->cmd_operands[pos], 0, 8); 1487 if (uid){ 1488 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1489 } 1490 pos += 8; 1491 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1492 pos += 2; 1493 connection->cmd_operands_length = pos; 1494 1495 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1496 return ERROR_CODE_SUCCESS; 1497 } 1498 1499 uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){ 1500 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1501 if (!connection){ 1502 log_error("avrcp_controller_play_item: could not find a connection."); 1503 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1504 } 1505 connection->max_num_fragments = max_num_fragments; 1506 return ERROR_CODE_SUCCESS; 1507 } 1508 1509 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){ 1510 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1511 if (!connection){ 1512 log_error("avrcp_controller_play_item: could not find a connection."); 1513 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1514 } 1515 1516 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1517 connection->state = AVCTP_W2_SEND_FRAGMENTED_COMMAND; 1518 1519 connection->transaction_label = avrcp_controller_get_next_transaction_label(); 1520 connection->command_opcode = command_opcode; 1521 connection->command_type = command_type; 1522 connection->subunit_type = subunit_type; 1523 connection->subunit_id = subunit_id; 1524 connection->cmd_operands_fragmented_buffer = command_buffer; 1525 connection->cmd_operands_fragmented_pos = 0; 1526 connection->cmd_operands_fragmented_len = command_len; 1527 1528 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1529 return ERROR_CODE_SUCCESS; 1530 } 1531