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 BLUEKITCHEN 24 * GMBH 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 // made public in avrcp_controller.h 54 avrcp_context_t avrcp_controller_context; 55 56 static uint8_t avrcp_controller_calc_next_transaction_label(uint8_t current_transaction_label){ 57 current_transaction_label++; 58 if (current_transaction_label == 16){ 59 current_transaction_label = 1; 60 } 61 return current_transaction_label; 62 } 63 64 static uint8_t avrcp_controller_get_next_transaction_label(avrcp_connection_t * connection){ 65 connection->transaction_id_counter = avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter); 66 return connection->transaction_id_counter; 67 } 68 69 static bool avrcp_controller_is_transaction_id_valid(avrcp_connection_t * connection, uint8_t transaction_id){ 70 uint8_t delta = ((int8_t) transaction_id - connection->controller_last_confirmed_transaction_id) & 0x0f; 71 return delta < 15; 72 } 73 74 static void avrcp_controller_custom_command_data_init(avrcp_connection_t * connection, 75 avrcp_command_opcode_t opcode, avrcp_command_type_t command_type, 76 avrcp_subunit_type_t subunit_type, avrcp_subunit_id_t subunit_id, 77 avrcp_pdu_id_t pdu_id, uint32_t company_id){ 78 79 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 80 connection->command_opcode = opcode; 81 connection->command_type = command_type; 82 connection->subunit_type = subunit_type; 83 connection->subunit_id = subunit_id; 84 connection->company_id = company_id; 85 connection->pdu_id = pdu_id; 86 connection->data = NULL; 87 connection->data_offset = 0; 88 connection->data_len = 0; 89 } 90 91 static void avrcp_controller_vendor_dependent_command_data_init(avrcp_connection_t * connection, avrcp_command_type_t command_type, avrcp_pdu_id_t pdu_id){ 92 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 93 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 94 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 95 connection->subunit_id = AVRCP_SUBUNIT_ID; 96 connection->company_id = BT_SIG_COMPANY_ID; 97 98 connection->command_type = command_type; 99 connection->pdu_id = pdu_id; 100 connection->data = connection->message_body; 101 connection->data_offset = 0; 102 connection->data_len = 0; 103 } 104 105 static void avrcp_controller_pass_through_command_data_init(avrcp_connection_t * connection, avrcp_operation_id_t opid){ 106 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 107 connection->command_opcode = AVRCP_CMD_OPCODE_PASS_THROUGH; 108 connection->command_type = AVRCP_CTYPE_CONTROL; 109 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 110 connection->subunit_id = AVRCP_SUBUNIT_ID; 111 112 connection->company_id = 0; 113 connection->pdu_id = AVRCP_PDU_ID_UNDEFINED; 114 connection->operation_id = opid; 115 116 connection->data = connection->message_body; 117 connection->data_offset = 0; 118 connection->data_len = 0; 119 } 120 static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){ 121 return controller_supported_features & AVRCP_FEATURE_MASK_BROWSING; 122 } 123 124 static void avrcp_controller_prepare_custom_command_response(avrcp_connection_t * connection, uint8_t response_len, uint8_t * in_place_buffer){ 125 uint8_t pos = 0; 126 in_place_buffer[pos++] = HCI_EVENT_AVRCP_META; 127 // skip len 128 pos++; 129 in_place_buffer[pos++] = AVRCP_SUBEVENT_CUSTOM_COMMAND_RESPONSE; 130 little_endian_store_16(in_place_buffer, pos, connection->avrcp_cid); 131 pos += 2; 132 in_place_buffer[pos++] = connection->pdu_id; 133 little_endian_store_16(in_place_buffer, pos, response_len); 134 pos += 2; 135 in_place_buffer[1] = pos + response_len - 2; 136 } 137 138 static void avrcp_controller_emit_notification_complete(avrcp_connection_t * connection, uint8_t status, uint8_t event_id, bool enabled){ 139 uint8_t event[8]; 140 uint8_t pos = 0; 141 event[pos++] = HCI_EVENT_AVRCP_META; 142 event[pos++] = sizeof(event) - 2; 143 event[pos++] = AVRCP_SUBEVENT_NOTIFICATION_STATE; 144 little_endian_store_16(event, pos, connection->avrcp_cid); 145 pos += 2; 146 event[pos++] = status; 147 event[pos++] = enabled ? 1 : 0; 148 event[pos++] = event_id; 149 UNUSED(pos); 150 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 151 } 152 153 static void avrcp_controller_emit_supported_events(avrcp_connection_t * connection){ 154 uint8_t ctype = (uint8_t) AVRCP_CTYPE_RESPONSE_CHANGED_STABLE; 155 uint8_t event_id; 156 157 for (event_id = (uint8_t) AVRCP_NOTIFICATION_EVENT_FIRST_INDEX; event_id < (uint8_t) AVRCP_NOTIFICATION_EVENT_LAST_INDEX; event_id++){ 158 if ((connection->notifications_supported_by_target & (1 << event_id)) == 0){ 159 continue; 160 } 161 uint8_t event[8]; 162 uint8_t pos = 0; 163 event[pos++] = HCI_EVENT_AVRCP_META; 164 event[pos++] = sizeof(event) - 2; 165 event[pos++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID; 166 little_endian_store_16(event, pos, connection->avrcp_cid); 167 pos += 2; 168 event[pos++] = ctype; 169 event[pos++] = 0; 170 event[pos++] = event_id; 171 UNUSED(pos); 172 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 173 } 174 175 uint8_t event[7]; 176 uint8_t pos = 0; 177 event[pos++] = HCI_EVENT_AVRCP_META; 178 event[pos++] = sizeof(event) - 2; 179 event[pos++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE; 180 little_endian_store_16(event, pos, connection->avrcp_cid); 181 pos += 2; 182 event[pos++] = ctype; 183 event[pos++] = 0; 184 UNUSED(pos); 185 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 186 } 187 188 static void avrcp_controller_emit_notification_for_event_id(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id, 189 avrcp_command_type_t ctype, const uint8_t *payload, 190 uint16_t size) { 191 switch (event_id){ 192 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{ 193 if (size < 4) break; 194 uint32_t song_position = big_endian_read_32(payload, 0); 195 uint16_t offset = 0; 196 uint8_t event[10]; 197 event[offset++] = HCI_EVENT_AVRCP_META; 198 event[offset++] = sizeof(event) - 2; 199 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED; 200 little_endian_store_16(event, offset, avrcp_cid); 201 offset += 2; 202 event[offset++] = ctype; 203 little_endian_store_32(event, offset, song_position); 204 offset += 4; 205 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 206 break; 207 } 208 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{ 209 if (size < 1) break; 210 uint16_t offset = 0; 211 uint8_t event[7]; 212 event[offset++] = HCI_EVENT_AVRCP_META; 213 event[offset++] = sizeof(event) - 2; 214 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED; 215 little_endian_store_16(event, offset, avrcp_cid); 216 offset += 2; 217 event[offset++] = ctype; 218 event[offset++] = payload[0]; 219 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 220 break; 221 } 222 case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{ 223 uint16_t offset = 0; 224 uint8_t event[6]; 225 event[offset++] = HCI_EVENT_AVRCP_META; 226 event[offset++] = sizeof(event) - 2; 227 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED; 228 little_endian_store_16(event, offset, avrcp_cid); 229 offset += 2; 230 event[offset++] = ctype; 231 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 232 break; 233 } 234 case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{ 235 uint16_t offset = 0; 236 uint8_t event[6]; 237 event[offset++] = HCI_EVENT_AVRCP_META; 238 event[offset++] = sizeof(event) - 2; 239 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED; 240 little_endian_store_16(event, offset, avrcp_cid); 241 offset += 2; 242 event[offset++] = ctype; 243 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 244 break; 245 } 246 case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{ 247 uint16_t offset = 0; 248 uint8_t event[6]; 249 event[offset++] = HCI_EVENT_AVRCP_META; 250 event[offset++] = sizeof(event) - 2; 251 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED; 252 little_endian_store_16(event, offset, avrcp_cid); 253 offset += 2; 254 event[offset++] = ctype; 255 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 256 break; 257 } 258 case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{ 259 if (size < 1) break; 260 uint16_t offset = 0; 261 uint8_t event[7]; 262 event[offset++] = HCI_EVENT_AVRCP_META; 263 event[offset++] = sizeof(event) - 2; 264 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED; 265 little_endian_store_16(event, offset, avrcp_cid); 266 offset += 2; 267 event[offset++] = ctype; 268 event[offset++] = payload[0] & 0x7F; 269 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 270 break; 271 } 272 case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{ 273 if (size < 2) break; 274 uint8_t event[8]; 275 uint16_t offset = 0; 276 uint16_t uuid = big_endian_read_16(payload, 0); 277 event[offset++] = HCI_EVENT_AVRCP_META; 278 event[offset++] = sizeof(event) - 2; 279 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED; 280 little_endian_store_16(event, offset, avrcp_cid); 281 offset += 2; 282 event[offset++] = ctype; 283 little_endian_store_16(event, offset, uuid); 284 offset += 2; 285 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 286 break; 287 } 288 289 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{ 290 uint16_t offset = 0; 291 uint8_t event[6]; 292 event[offset++] = HCI_EVENT_AVRCP_META; 293 event[offset++] = sizeof(event) - 2; 294 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END; 295 little_endian_store_16(event, offset, avrcp_cid); 296 offset += 2; 297 event[offset++] = ctype; 298 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 299 break; 300 } 301 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{ 302 uint16_t offset = 0; 303 uint8_t event[6]; 304 event[offset++] = HCI_EVENT_AVRCP_META; 305 event[offset++] = sizeof(event) - 2; 306 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START; 307 little_endian_store_16(event, offset, avrcp_cid); 308 offset += 2; 309 event[offset++] = ctype; 310 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 311 break; 312 } 313 case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{ 314 if (size < 1) break; 315 uint16_t offset = 0; 316 uint8_t event[7]; 317 event[offset++] = HCI_EVENT_AVRCP_META; 318 event[offset++] = sizeof(event) - 2; 319 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED; 320 little_endian_store_16(event, offset, avrcp_cid); 321 offset += 2; 322 event[offset++] = ctype; 323 event[offset++] = payload[0]; 324 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 325 break; 326 } 327 328 case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{ 329 if (size < 1) break; 330 uint16_t offset = 0; 331 uint8_t event[7]; 332 event[offset++] = HCI_EVENT_AVRCP_META; 333 event[offset++] = sizeof(event) - 2; 334 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED; 335 little_endian_store_16(event, offset, avrcp_cid); 336 offset += 2; 337 event[offset++] = ctype; 338 event[offset++] = payload[0]; 339 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 340 break; 341 } 342 343 case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED: 344 default: 345 log_info("avrcp: not implemented"); 346 break; 347 } 348 } 349 350 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){ 351 btstack_assert(callback != NULL); 352 353 uint8_t event[8]; 354 int pos = 0; 355 event[pos++] = HCI_EVENT_AVRCP_META; 356 event[pos++] = sizeof(event) - 2; 357 event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE; 358 little_endian_store_16(event, pos, avrcp_cid); 359 pos += 2; 360 event[pos++] = ctype; 361 event[pos++] = repeat_mode; 362 event[pos++] = shuffle_mode; 363 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 364 } 365 366 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){ 367 uint8_t event[7]; 368 int pos = 0; 369 event[pos++] = HCI_EVENT_AVRCP_META; 370 event[pos++] = sizeof(event) - 2; 371 event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE; 372 little_endian_store_16(event, pos, avrcp_cid); 373 pos += 2; 374 event[pos++] = ctype; 375 event[pos++] = status; 376 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 377 } 378 379 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){ 380 uint8_t event[HCI_EVENT_BUFFER_SIZE]; 381 int pos = 0; 382 event[pos++] = HCI_EVENT_AVRCP_META; 383 // reserve one byte for subevent type and data len 384 int data_len_pos = pos; 385 pos++; 386 int subevent_type_pos = pos; 387 pos++; 388 little_endian_store_16(event, pos, avrcp_cid); 389 pos += 2; 390 event[pos++] = ctype; 391 392 switch (attr_id){ 393 case AVRCP_MEDIA_ATTR_TITLE: 394 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO; 395 event[pos++] = value_len; 396 (void)memcpy(event + pos, value, value_len); 397 break; 398 case AVRCP_MEDIA_ATTR_ARTIST: 399 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO; 400 event[pos++] = value_len; 401 (void)memcpy(event + pos, value, value_len); 402 break; 403 case AVRCP_MEDIA_ATTR_ALBUM: 404 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO; 405 event[pos++] = value_len; 406 (void)memcpy(event + pos, value, value_len); 407 break; 408 case AVRCP_MEDIA_ATTR_GENRE: 409 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO; 410 event[pos++] = value_len; 411 (void)memcpy(event + pos, value, value_len); 412 break; 413 case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS: 414 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO; 415 if (value){ 416 little_endian_store_32(event, pos, btstack_atoi((char *)value)); 417 } else { 418 little_endian_store_32(event, pos, 0); 419 } 420 pos += 4; 421 break; 422 case AVRCP_MEDIA_ATTR_TRACK: 423 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO; 424 if (value){ 425 event[pos++] = btstack_atoi((char *)value); 426 } else { 427 event[pos++] = 0; 428 } 429 break; 430 case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS: 431 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO; 432 if (value){ 433 event[pos++] = btstack_atoi((char *)value); 434 } else { 435 event[pos++] = 0; 436 } 437 break; 438 default: 439 break; 440 } 441 event[data_len_pos] = pos - 2; 442 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 443 } 444 445 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){ 446 btstack_assert(callback != NULL); 447 448 uint8_t event[7]; 449 int pos = 0; 450 event[pos++] = HCI_EVENT_AVRCP_META; 451 event[pos++] = sizeof(event) - 2; 452 event[pos++] = subevent; 453 little_endian_store_16(event, pos, avrcp_cid); 454 pos += 2; 455 event[pos++] = ctype; 456 event[pos++] = operation_id; 457 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 458 } 459 460 static void avrcp_parser_reset(avrcp_connection_t * connection){ 461 connection->list_offset = 0; 462 connection->parser_attribute_header_pos = 0; 463 connection->controller_num_received_fragments = 0; 464 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 465 } 466 467 static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){ 468 uint16_t attribute_total_value_len; 469 uint32_t attribute_id; 470 switch(connection->parser_state){ 471 case AVRCP_PARSER_GET_ATTRIBUTE_HEADER: 472 connection->parser_attribute_header[connection->parser_attribute_header_pos++] = byte; 473 connection->list_offset++; 474 475 if (connection->parser_attribute_header_pos < AVRCP_ATTRIBUTE_HEADER_LEN) return; 476 477 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 478 connection->attribute_value_len = btstack_min(attribute_total_value_len, AVRCP_MAX_ATTRIBUTE_SIZE); 479 if (connection->attribute_value_len > 0){ 480 // get ready for attribute value 481 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_VALUE; 482 return; 483 } 484 485 // emit empty attribute 486 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 487 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); 488 489 // done, see below 490 break; 491 492 case AVRCP_PARSER_GET_ATTRIBUTE_VALUE: 493 connection->attribute_value[connection->attribute_value_offset++] = byte; 494 connection->list_offset++; 495 496 if (connection->attribute_value_offset < connection->attribute_value_len) return; 497 498 // emit (potentially partial) attribute 499 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 500 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); 501 502 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 503 if (connection->attribute_value_offset < attribute_total_value_len){ 504 // ignore rest of attribute 505 connection->parser_state = AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE; 506 return; 507 } 508 509 // done, see below 510 break; 511 512 case AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE: 513 connection->attribute_value_offset++; 514 connection->list_offset++; 515 516 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 517 if (connection->attribute_value_offset < attribute_total_value_len) return; 518 519 // done, see below 520 break; 521 522 default: 523 return; 524 } 525 526 // attribute fully read, check if more to come 527 if (connection->list_offset < connection->list_size){ 528 // more to come, reset parser 529 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 530 connection->parser_attribute_header_pos = 0; 531 connection->attribute_value_offset = 0; 532 } else { 533 // fully done 534 avrcp_parser_reset(connection); 535 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 0); 536 } 537 } 538 539 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){ 540 int i; 541 for (i=0;i<num_bytes_to_read;i++){ 542 avrcp_parser_process_byte(packet[i], connection, ctype); 543 } 544 } 545 546 static void avrcp_send_cmd_with_avctp_fragmentation(avrcp_connection_t * connection){ 547 l2cap_reserve_packet_buffer(); 548 uint8_t * command = l2cap_get_outgoing_buffer(); 549 550 uint16_t max_payload_size; 551 avctp_packet_type_t avctp_packet_type = avctp_get_packet_type(connection, &max_payload_size); 552 553 // non-fragmented: transport header (1) + PID (2) 554 // fragmented: transport header (1) + num packets (1) + PID (2) 555 556 // AVCTP header 557 // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 558 uint16_t pos = 0; 559 command[pos++] = (connection->transaction_id << 4) | (avctp_packet_type << 2) | (AVRCP_COMMAND_FRAME << 1) | 0; 560 561 switch (avctp_packet_type){ 562 case AVCTP_SINGLE_PACKET: 563 case AVCTP_START_PACKET: 564 if (avctp_packet_type == AVCTP_START_PACKET){ 565 // num packets 566 command[pos++] = ((connection->data_len + max_payload_size - 1) / max_payload_size); 567 } 568 569 // Profile IDentifier (PID) 570 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 571 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 572 573 // command_type 574 command[pos++] = connection->command_type; 575 // subunit_type | subunit ID 576 command[pos++] = (connection->subunit_type << 3) | connection->subunit_id; 577 // opcode 578 command[pos++] = (uint8_t)connection->command_opcode; 579 580 switch (connection->command_opcode){ 581 case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT: 582 big_endian_store_24(command, pos, connection->company_id); 583 pos += 3; 584 command[pos++] = connection->pdu_id; 585 command[pos++] = 0; // reserved(upper 6) | packet_type -> 0 586 big_endian_store_16(command, pos, connection->data_len); // parameter length 587 pos += 2; 588 break; 589 case AVRCP_CMD_OPCODE_PASS_THROUGH: 590 command[pos++] = connection->operation_id; 591 command[pos++] = (uint8_t)connection->data_len; // parameter length 592 pos += 2; 593 break; 594 case AVRCP_CMD_OPCODE_UNIT_INFO: 595 break; 596 case AVRCP_CMD_OPCODE_SUBUNIT_INFO: 597 break; 598 default: 599 btstack_assert(false); 600 return; 601 } 602 break; 603 case AVCTP_CONTINUE_PACKET: 604 case AVCTP_END_PACKET: 605 break; 606 default: 607 btstack_assert(false); 608 return; 609 } 610 // compare number of bytes to store with the remaining buffer size 611 uint16_t bytes_to_copy = btstack_min(connection->data_len - connection->data_offset, max_payload_size - pos); 612 613 (void)memcpy(command + pos, &connection->data[connection->data_offset], bytes_to_copy); 614 pos += bytes_to_copy; 615 connection->data_offset += bytes_to_copy; 616 617 l2cap_send_prepared(connection->l2cap_signaling_cid, pos); 618 } 619 620 static int avrcp_send_register_notification(avrcp_connection_t * connection, uint8_t event_id){ 621 uint8_t command[18]; 622 uint16_t pos = 0; 623 // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 624 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 625 command[pos++] = (connection->transaction_id << 4) | (AVRCP_SINGLE_PACKET << 2) | (AVRCP_COMMAND_FRAME << 1) | 0; 626 627 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 628 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 629 command[pos++] = AVRCP_CTYPE_NOTIFY; 630 command[pos++] = (AVRCP_SUBUNIT_TYPE_PANEL << 3) | AVRCP_SUBUNIT_ID; 631 command[pos++] = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 632 633 big_endian_store_24(command, pos, BT_SIG_COMPANY_ID); 634 pos += 3; 635 command[pos++] = AVRCP_PDU_ID_REGISTER_NOTIFICATION; 636 command[pos++] = 0; // reserved(upper 6) | packet_type -> 0 637 big_endian_store_16(command, pos, 5); // parameter length 638 pos += 2; 639 command[pos++] = event_id; 640 big_endian_store_32(command, pos, 1); // send notification on playback position every second, for other notifications it is ignored 641 pos += 4; 642 return l2cap_send(connection->l2cap_signaling_cid, command, pos); 643 } 644 645 static void avrcp_press_and_hold_timeout_handler(btstack_timer_source_t * timer){ 646 UNUSED(timer); 647 avrcp_connection_t * connection = (avrcp_connection_t*) btstack_run_loop_get_timer_context(timer); 648 btstack_run_loop_set_timer(&connection->controller_press_and_hold_cmd_timer, 2000); // 2 seconds timeout 649 btstack_run_loop_add_timer(&connection->controller_press_and_hold_cmd_timer); 650 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 651 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 652 } 653 654 static void avrcp_press_and_hold_timer_start(avrcp_connection_t * connection){ 655 btstack_run_loop_remove_timer(&connection->controller_press_and_hold_cmd_timer); 656 btstack_run_loop_set_timer_handler(&connection->controller_press_and_hold_cmd_timer, avrcp_press_and_hold_timeout_handler); 657 btstack_run_loop_set_timer_context(&connection->controller_press_and_hold_cmd_timer, connection); 658 btstack_run_loop_set_timer(&connection->controller_press_and_hold_cmd_timer, 2000); // 2 seconds timeout 659 btstack_run_loop_add_timer(&connection->controller_press_and_hold_cmd_timer); 660 } 661 662 static void avrcp_press_and_hold_timer_stop(avrcp_connection_t * connection){ 663 connection->controller_press_and_hold_cmd_active = false; 664 btstack_run_loop_remove_timer(&connection->controller_press_and_hold_cmd_timer); 665 } 666 667 668 static uint8_t avrcp_controller_request_pass_through_release_control_cmd(avrcp_connection_t * connection){ 669 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 670 if (connection->controller_press_and_hold_cmd_active){ 671 avrcp_press_and_hold_timer_stop(connection); 672 } 673 connection->operation_id = (avrcp_operation_id_t)(0x80 | connection->operation_id); 674 connection->transaction_id = avrcp_controller_get_next_transaction_label(connection); 675 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 676 return ERROR_CODE_SUCCESS; 677 } 678 679 static 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_cmd){ 680 log_info("Send command %d", opid); 681 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 682 if (!connection){ 683 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 684 } 685 686 if (connection->state != AVCTP_CONNECTION_OPENED){ 687 log_error("Connection in wrong state %d, expected %d. avrcp cid 0x%02x", connection->state, AVCTP_CONNECTION_OPENED, avrcp_cid); 688 return ERROR_CODE_COMMAND_DISALLOWED; 689 } 690 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 691 avrcp_controller_pass_through_command_data_init(connection, opid); 692 693 if (playback_speed > 0){ 694 connection->data[0] = playback_speed; 695 connection->data_len = 1; 696 } 697 698 connection->controller_press_and_hold_cmd_active = continuous_cmd; 699 if (connection->controller_press_and_hold_cmd_active){ 700 avrcp_press_and_hold_timer_start(connection); 701 } 702 703 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 704 return ERROR_CODE_SUCCESS; 705 } 706 707 static uint8_t request_single_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 708 return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, false); 709 } 710 711 static uint8_t request_continuous_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 712 return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, true); 713 } 714 715 static void avrcp_controller_get_capabilities_for_connection(avrcp_connection_t * connection, uint8_t capability_id){ 716 connection->state = AVCTP_W2_SEND_COMMAND; 717 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_STATUS, AVRCP_PDU_ID_GET_CAPABILITIES); 718 719 // Parameter Length 720 connection->data_len = 1; 721 connection->data[0] = capability_id; // capability ID 722 723 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 724 } 725 726 static uint8_t avrcp_controller_register_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){ 727 if (connection->controller_notifications_supported_by_target_queried && (connection->notifications_supported_by_target & (1 << event_id)) == 0){ 728 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 729 } 730 if ((connection->controller_notifications_to_deregister & (1 << event_id)) != 0){ 731 return ERROR_CODE_COMMAND_DISALLOWED; 732 } 733 if ( (connection->notifications_enabled & (1 << event_id)) != 0){ 734 return ERROR_CODE_SUCCESS; 735 } 736 connection->controller_notifications_to_register |= (1 << event_id); 737 738 if (!connection->controller_notifications_supported_by_target_queried){ 739 connection->controller_notifications_supported_by_target_suppress_emit_result = true; 740 avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_EVENT); 741 return ERROR_CODE_SUCCESS; 742 } 743 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 744 return ERROR_CODE_SUCCESS; 745 } 746 747 static uint8_t avrcp_controller_request_continuation(avrcp_connection_t * connection, avrcp_pdu_id_t pdu_id){ 748 connection->state = AVCTP_W2_SEND_COMMAND; 749 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_CONTROL, pdu_id); 750 751 // Parameter Length 752 connection->data_len = 3; 753 big_endian_store_16(connection->data, 0, 1); 754 connection->data[2] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; 755 756 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 757 return ERROR_CODE_SUCCESS; 758 } 759 760 static uint8_t avrcp_controller_request_abort_continuation(avrcp_connection_t * connection){ 761 return avrcp_controller_request_continuation(connection, AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE); 762 } 763 764 static uint8_t avrcp_controller_request_continue_response(avrcp_connection_t * connection){ 765 return avrcp_controller_request_continuation(connection, AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE); 766 } 767 768 static void avrcp_controller_handle_notification(avrcp_connection_t *connection, avrcp_command_type_t ctype, uint8_t *payload, uint16_t size) { 769 if (size < 1) return; 770 uint16_t pos = 0; 771 avrcp_notification_event_id_t event_id = (avrcp_notification_event_id_t) payload[pos++]; 772 if ( (event_id < AVRCP_NOTIFICATION_EVENT_FIRST_INDEX) || (event_id > AVRCP_NOTIFICATION_EVENT_LAST_INDEX)){ 773 return; 774 } 775 776 uint16_t event_mask = (1 << event_id); 777 uint16_t reset_event_mask = ~event_mask; 778 779 switch (ctype){ 780 case AVRCP_CTYPE_RESPONSE_REJECTED: 781 connection->controller_notifications_to_deregister &= reset_event_mask; 782 connection->controller_notifications_to_register &= reset_event_mask; 783 connection->controller_initial_status_reported &= reset_event_mask; 784 avrcp_controller_emit_notification_complete(connection, ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE, event_id, false); 785 return; 786 787 case AVRCP_CTYPE_RESPONSE_INTERIM: 788 // register as enabled 789 connection->notifications_enabled |= event_mask; 790 791 // check if initial value is already sent 792 if ((connection->controller_initial_status_reported & event_mask) != 0 ){ 793 return; 794 } 795 // emit event only once, initially 796 avrcp_controller_emit_notification_complete(connection, ERROR_CODE_SUCCESS, event_id, true); 797 connection->controller_initial_status_reported |= event_mask; 798 // emit initial value after this switch 799 break; 800 801 case AVRCP_CTYPE_RESPONSE_CHANGED_STABLE: 802 // received change, event is considered de-registered 803 // we are re-enabling it automatically, if it is not 804 // explicitly disabled 805 connection->notifications_enabled &= reset_event_mask; 806 if ((connection->controller_notifications_to_deregister & event_mask) == 0){ 807 avrcp_controller_register_notification(connection, event_id); 808 } else { 809 connection->controller_notifications_to_deregister &= reset_event_mask; 810 connection->controller_notifications_to_register &= reset_event_mask; 811 connection->controller_initial_status_reported &= reset_event_mask; 812 avrcp_controller_emit_notification_complete(connection, ERROR_CODE_SUCCESS, event_id, false); 813 } 814 break; 815 816 default: 817 return; 818 } 819 820 avrcp_controller_emit_notification_for_event_id(connection->avrcp_cid, event_id, ctype, payload + pos, size - pos); 821 } 822 823 #ifdef ENABLE_AVCTP_FRAGMENTATION 824 static void avctp_reassemble_message(avrcp_connection_t * connection, avctp_packet_type_t packet_type, uint8_t *packet, uint16_t size){ 825 // after header (transaction label and packet type) 826 uint16_t pos; 827 uint16_t bytes_to_store; 828 829 switch (packet_type){ 830 case AVCTP_START_PACKET: 831 if (size < 2) return; 832 833 // store header 834 pos = 0; 835 connection->avctp_reassembly_buffer[pos] = packet[pos]; 836 pos++; 837 connection->avctp_reassembly_size = pos; 838 839 // NOTE: num packets not needed for reassembly, ignoring it does not pose security risk -> no need to store it 840 pos++; 841 842 // PID in reassembled packet is at offset 1, it will be read later after the avctp_reassemble_message with AVCTP_END_PACKET is called 843 844 bytes_to_store = btstack_min(size - pos, sizeof(connection->avctp_reassembly_buffer) - connection->avctp_reassembly_size); 845 memcpy(&connection->avctp_reassembly_buffer[connection->avctp_reassembly_size], &packet[pos], bytes_to_store); 846 connection->avctp_reassembly_size += bytes_to_store; 847 break; 848 849 case AVCTP_CONTINUE_PACKET: 850 case AVCTP_END_PACKET: 851 if (size < 1) return; 852 853 // store remaining data, ignore header 854 pos = 1; 855 bytes_to_store = btstack_min(size - pos, sizeof(connection->avctp_reassembly_buffer) - connection->avctp_reassembly_size); 856 memcpy(&connection->avctp_reassembly_buffer[connection->avctp_reassembly_size], &packet[pos], bytes_to_store); 857 connection->avctp_reassembly_size += bytes_to_store; 858 break; 859 860 default: 861 return; 862 } 863 } 864 #endif 865 866 static void avrcp_handle_l2cap_data_packet_for_signaling_connection(avrcp_connection_t * connection, uint8_t *packet, uint16_t size){ 867 if (size < 6u) return; 868 uint8_t pdu_id; 869 avrcp_packet_type_t vendor_dependent_packet_type; 870 871 uint16_t pos = 0; 872 connection->controller_last_confirmed_transaction_id = packet[pos] >> 4; 873 avrcp_frame_type_t frame_type = (avrcp_frame_type_t)((packet[pos] >> 1) & 0x01); 874 avctp_packet_type_t packet_type = (avctp_packet_type_t)((packet[pos] >> 2) & 0x03); 875 pos++; 876 877 if (frame_type != AVRCP_RESPONSE_FRAME) return; 878 879 switch (packet_type){ 880 case AVCTP_SINGLE_PACKET: 881 break; 882 883 #ifdef ENABLE_AVCTP_FRAGMENTATION 884 case AVCTP_START_PACKET: 885 case AVCTP_CONTINUE_PACKET: 886 avctp_reassemble_message(connection, packet_type, packet, size); 887 return; 888 889 case AVCTP_END_PACKET: 890 avctp_reassemble_message(connection, packet_type, packet, size); 891 892 packet = connection->avctp_reassembly_buffer; 893 size = connection->avctp_reassembly_size; 894 break; 895 #endif 896 897 default: 898 return; 899 } 900 901 pos += 2; // PID 902 903 avrcp_command_type_t ctype = (avrcp_command_type_t) packet[pos++]; 904 905 #ifdef ENABLE_LOG_INFO 906 uint8_t byte_value = packet[pos]; 907 avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3); 908 avrcp_subunit_type_t subunit_id = (avrcp_subunit_type_t) (byte_value & 0x07); 909 #endif 910 pos++; 911 912 uint8_t opcode = packet[pos++]; 913 uint16_t param_length; 914 915 switch (opcode){ 916 case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{ 917 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 918 connection->state = AVCTP_CONNECTION_OPENED; 919 920 #ifdef ENABLE_LOG_INFO 921 // page, extension code (1) 922 pos++; 923 uint8_t unit_type = packet[pos] >> 3; 924 uint8_t max_subunit_ID = packet[pos] & 0x07; 925 log_info("SUBUNIT INFO response: ctype 0x%02x (0C), subunit_type 0x%02x (1F), subunit_id 0x%02x (07), opcode 0x%02x (30), target_unit_type 0x%02x, max_subunit_ID %d", ctype, subunit_type, subunit_id, opcode, unit_type, max_subunit_ID); 926 #endif 927 break; 928 } 929 case AVRCP_CMD_OPCODE_UNIT_INFO:{ 930 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 931 connection->state = AVCTP_CONNECTION_OPENED; 932 933 #ifdef ENABLE_LOG_INFO 934 // byte value 7 (1) 935 pos++; 936 uint8_t unit_type = packet[pos] >> 3; 937 uint8_t unit = packet[pos] & 0x07; 938 pos++; 939 uint32_t company_id = big_endian_read_24(packet, pos); 940 log_info("UNIT INFO response: ctype 0x%02x (0C), subunit_type 0x%02x (1F), subunit_id 0x%02x (07), opcode 0x%02x (30), target_unit_type 0x%02x, unit %d, company_id 0x%06" PRIx32, 941 ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id); 942 #endif 943 break; 944 } 945 case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT: 946 947 if ((size - pos) < 7) return; 948 949 // Company ID (3) 950 pos += 3; 951 pdu_id = packet[pos++]; 952 vendor_dependent_packet_type = (avrcp_packet_type_t)(packet[pos++] & 0x03); 953 param_length = big_endian_read_16(packet, pos); 954 pos += 2; 955 956 if ((size - pos) < param_length) return; 957 958 // handle asynchronous notifications, without changing state 959 if (pdu_id == AVRCP_PDU_ID_REGISTER_NOTIFICATION){ 960 avrcp_controller_handle_notification(connection, ctype, packet + pos, size - pos); 961 break; 962 } 963 964 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE){ 965 log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state); 966 return; 967 } 968 connection->state = AVCTP_CONNECTION_OPENED; 969 970 log_info("VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype)); 971 switch (pdu_id){ 972 case AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE:{ 973 uint8_t num_attributes = packet[pos++]; 974 int i; 975 avrcp_repeat_mode_t repeat_mode = AVRCP_REPEAT_MODE_INVALID; 976 avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID; 977 for (i = 0; i < num_attributes; i++){ 978 uint8_t attribute_id = packet[pos++]; 979 uint8_t value = packet[pos++]; 980 switch (attribute_id){ 981 case 0x02: 982 repeat_mode = (avrcp_repeat_mode_t) value; 983 break; 984 case 0x03: 985 shuffle_mode = (avrcp_shuffle_mode_t) value; 986 break; 987 default: 988 break; 989 } 990 } 991 avrcp_controller_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode); 992 break; 993 } 994 995 case AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE:{ 996 uint16_t offset = 0; 997 uint8_t event[6]; 998 event[offset++] = HCI_EVENT_AVRCP_META; 999 event[offset++] = sizeof(event) - 2; 1000 event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE; 1001 little_endian_store_16(event, offset, connection->avrcp_cid); 1002 offset += 2; 1003 event[offset++] = ctype; 1004 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1005 break; 1006 } 1007 1008 case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{ 1009 uint16_t offset = 0; 1010 uint8_t event[7]; 1011 event[offset++] = HCI_EVENT_AVRCP_META; 1012 event[offset++] = sizeof(event) - 2; 1013 event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE; 1014 little_endian_store_16(event, offset, connection->avrcp_cid); 1015 offset += 2; 1016 event[offset++] = ctype; 1017 event[offset++] = packet[pos++]; 1018 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1019 break; 1020 } 1021 1022 case AVRCP_PDU_ID_GET_CAPABILITIES:{ 1023 avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++]; 1024 uint8_t capability_count = 0; 1025 if (param_length > 1){ 1026 capability_count = packet[pos++]; 1027 } 1028 uint16_t i; 1029 uint16_t offset = 0; 1030 uint8_t event[10]; 1031 1032 switch (capability_id){ 1033 1034 case AVRCP_CAPABILITY_ID_COMPANY: 1035 for (i = 0; (i < capability_count) && ((size - pos) >= 3); i++){ 1036 uint32_t company_id = big_endian_read_24(packet, pos); 1037 pos += 3; 1038 log_info(" 0x%06" PRIx32 ", ", company_id); 1039 1040 offset = 0; 1041 event[offset++] = HCI_EVENT_AVRCP_META; 1042 event[offset++] = sizeof(event) - 2; 1043 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID; 1044 little_endian_store_16(event, offset, connection->avrcp_cid); 1045 offset += 2; 1046 event[offset++] = ctype; 1047 event[offset++] = 0; 1048 little_endian_store_24(event, offset, company_id); 1049 offset += 3; 1050 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 1051 } 1052 1053 offset = 0; 1054 event[offset++] = HCI_EVENT_AVRCP_META; 1055 event[offset++] = sizeof(event) - 2; 1056 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE; 1057 little_endian_store_16(event, offset, connection->avrcp_cid); 1058 offset += 2; 1059 event[offset++] = ctype; 1060 event[offset++] = 0; 1061 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 1062 break; 1063 1064 case AVRCP_CAPABILITY_ID_EVENT: 1065 for (i = 0; (i < capability_count) && ((size - pos) >= 1); i++){ 1066 uint8_t event_id = packet[pos++]; 1067 connection->notifications_supported_by_target |= (1 << event_id); 1068 } 1069 1070 // if the get supported events query is triggered by avrcp_controller_enable_notification call, 1071 // avrcp_controller_emit_supported_events should be suppressed 1072 if (connection->controller_notifications_supported_by_target_suppress_emit_result){ 1073 connection->controller_notifications_supported_by_target_suppress_emit_result = false; 1074 // also, notification might not be supported 1075 // if so, emit AVRCP_SUBEVENT_ENABLE_NOTIFICATION_COMPLETE event to app, 1076 // and update controller_notifications_to_register bitmap 1077 for (i = (uint8_t)AVRCP_NOTIFICATION_EVENT_FIRST_INDEX; i < (uint8_t) AVRCP_NOTIFICATION_EVENT_LAST_INDEX; i++){ 1078 if ((connection->controller_notifications_to_register & (1 << i)) != 0){ 1079 if ((connection->notifications_supported_by_target & (1 << i)) == 0){ 1080 avrcp_controller_emit_notification_complete(connection, ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE, i, false); 1081 connection->controller_notifications_to_register &= ~(1 << i); 1082 } 1083 } 1084 } 1085 break; 1086 } 1087 // supported events are emitted only if the get supported events query 1088 // is triggered by avrcp_controller_get_supported_events call 1089 avrcp_controller_emit_supported_events(connection); 1090 break; 1091 1092 default: 1093 // ignore 1094 break; 1095 } 1096 break; 1097 } 1098 1099 case AVRCP_PDU_ID_GET_PLAY_STATUS:{ 1100 uint32_t song_length = big_endian_read_32(packet, pos); 1101 pos += 4; 1102 uint32_t song_position = big_endian_read_32(packet, pos); 1103 pos += 4; 1104 uint8_t play_status = packet[pos]; 1105 1106 uint8_t event[15]; 1107 int offset = 0; 1108 event[offset++] = HCI_EVENT_AVRCP_META; 1109 event[offset++] = sizeof(event) - 2; 1110 event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS; 1111 little_endian_store_16(event, offset, connection->avrcp_cid); 1112 offset += 2; 1113 event[offset++] = ctype; 1114 little_endian_store_32(event, offset, song_length); 1115 offset += 4; 1116 little_endian_store_32(event, offset, song_position); 1117 offset += 4; 1118 event[offset++] = play_status; 1119 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1120 break; 1121 } 1122 1123 case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{ 1124 // TODO Review 1125 switch (vendor_dependent_packet_type){ 1126 case AVRCP_START_PACKET: 1127 case AVRCP_SINGLE_PACKET: 1128 avrcp_parser_reset(connection); 1129 connection->list_size = param_length; 1130 // num_attributes 1131 pos++; 1132 1133 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 1134 if (vendor_dependent_packet_type == AVRCP_START_PACKET){ 1135 avrcp_controller_request_continue_response(connection); 1136 } 1137 break; 1138 case AVRCP_CONTINUE_PACKET: 1139 case AVRCP_END_PACKET: 1140 connection->controller_num_received_fragments++; 1141 1142 if (connection->controller_num_received_fragments < connection->controller_max_num_fragments){ 1143 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 1144 1145 if (vendor_dependent_packet_type == AVRCP_CONTINUE_PACKET){ 1146 avrcp_controller_request_continue_response(connection); 1147 } 1148 } else { 1149 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1); 1150 avrcp_parser_reset(connection); 1151 avrcp_controller_request_abort_continuation(connection); 1152 } 1153 break; 1154 default: 1155 // TODO check 1156 btstack_assert(false); 1157 break; 1158 } 1159 } 1160 default: 1161 // custom command response comes here 1162 if (pdu_id == connection->pdu_id) { 1163 uint8_t *in_place_buffer = packet + pos - 8; 1164 avrcp_controller_prepare_custom_command_response(connection, param_length, 1165 in_place_buffer); 1166 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, in_place_buffer, 1167 param_length + 8); 1168 } 1169 break; 1170 } 1171 break; 1172 case AVRCP_CMD_OPCODE_PASS_THROUGH:{ 1173 if ((size - pos) < 1) return; 1174 uint8_t operation_id = packet[pos++]; 1175 switch (connection->state){ 1176 case AVCTP_W2_RECEIVE_PRESS_RESPONSE: 1177 // trigger release for simple command: 1178 if (!connection->controller_press_and_hold_cmd_active){ 1179 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 1180 break; 1181 } 1182 // for press and hold, send release if it just has been requested, otherwise, wait for next repeat 1183 if (connection->controller_press_and_hold_cmd_release){ 1184 connection->controller_press_and_hold_cmd_release = false; 1185 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 1186 } else { 1187 connection->state = AVCTP_W4_STOP; 1188 } 1189 break; 1190 case AVCTP_W2_RECEIVE_RESPONSE: 1191 connection->state = AVCTP_CONNECTION_OPENED; 1192 break; 1193 default: 1194 break; 1195 } 1196 if (connection->state == AVCTP_W4_STOP){ 1197 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id); 1198 } 1199 if (connection->state == AVCTP_CONNECTION_OPENED) { 1200 // RELEASE response 1201 operation_id = operation_id & 0x7F; 1202 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id); 1203 } 1204 if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){ 1205 // PRESS response 1206 avrcp_controller_request_pass_through_release_control_cmd(connection); 1207 } 1208 break; 1209 } 1210 default: 1211 break; 1212 } 1213 1214 // trigger pending notification reqistrations 1215 if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->controller_notifications_to_register){ 1216 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1217 } 1218 } 1219 1220 static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){ 1221 switch (connection->state){ 1222 case AVCTP_W2_SEND_PRESS_COMMAND: 1223 case AVCTP_W2_SEND_COMMAND: 1224 case AVCTP_W2_SEND_RELEASE_COMMAND: 1225 avrcp_send_cmd_with_avctp_fragmentation(connection); 1226 1227 if (connection->data_offset < connection->data_len){ 1228 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1229 return; 1230 } 1231 if (connection->state == AVCTP_W2_SEND_PRESS_COMMAND){ 1232 connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE; 1233 } else { 1234 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 1235 } 1236 return; 1237 default: 1238 break; 1239 } 1240 1241 // send register notification if queued 1242 if (connection->controller_notifications_to_register != 0){ 1243 uint8_t event_id; 1244 for (event_id = (uint8_t)AVRCP_NOTIFICATION_EVENT_FIRST_INDEX; event_id < (uint8_t)AVRCP_NOTIFICATION_EVENT_LAST_INDEX; event_id++){ 1245 if (connection->controller_notifications_to_register & (1 << event_id)){ 1246 connection->controller_notifications_to_register &= ~ (1 << event_id); 1247 avrcp_send_register_notification(connection, event_id); 1248 return; 1249 } 1250 } 1251 } 1252 } 1253 1254 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1255 avrcp_connection_t * connection; 1256 1257 switch (packet_type) { 1258 case L2CAP_DATA_PACKET: 1259 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 1260 avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size); 1261 break; 1262 1263 case HCI_EVENT_PACKET: 1264 switch (hci_event_packet_get_type(packet)){ 1265 case L2CAP_EVENT_CAN_SEND_NOW: 1266 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 1267 avrcp_controller_handle_can_send_now(connection); 1268 break; 1269 default: 1270 break; 1271 } 1272 default: 1273 break; 1274 } 1275 } 1276 1277 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){ 1278 avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name); 1279 } 1280 1281 void avrcp_controller_init(void){ 1282 avrcp_controller_context.role = AVRCP_CONTROLLER; 1283 avrcp_controller_context.packet_handler = avrcp_controller_packet_handler; 1284 avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler); 1285 } 1286 1287 void avrcp_controller_deinit(void){ 1288 memset(&avrcp_controller_context, 0, sizeof(avrcp_context_t)); 1289 } 1290 1291 void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){ 1292 btstack_assert(callback != NULL); 1293 avrcp_controller_context.avrcp_callback = callback; 1294 } 1295 1296 1297 uint8_t avrcp_controller_play(uint16_t avrcp_cid){ 1298 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1299 } 1300 1301 uint8_t avrcp_controller_stop(uint16_t avrcp_cid){ 1302 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1303 } 1304 1305 uint8_t avrcp_controller_pause(uint16_t avrcp_cid){ 1306 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1307 } 1308 1309 uint8_t avrcp_controller_forward(uint16_t avrcp_cid){ 1310 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1311 } 1312 1313 uint8_t avrcp_controller_backward(uint16_t avrcp_cid){ 1314 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1315 } 1316 1317 uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){ 1318 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1319 } 1320 1321 uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){ 1322 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1323 } 1324 1325 uint8_t avrcp_controller_mute(uint16_t avrcp_cid){ 1326 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1327 } 1328 1329 uint8_t avrcp_controller_skip(uint16_t avrcp_cid){ 1330 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0); 1331 } 1332 1333 uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){ 1334 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1335 } 1336 1337 uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){ 1338 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1339 } 1340 1341 /* start continuous cmds */ 1342 1343 uint8_t avrcp_controller_start_press_and_hold_cmd(uint16_t avrcp_cid, avrcp_operation_id_t operation_id){ 1344 return request_continuous_pass_through_press_control_cmd(avrcp_cid, operation_id, 0); 1345 } 1346 1347 uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){ 1348 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1349 } 1350 uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){ 1351 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1352 } 1353 uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){ 1354 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1355 } 1356 uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){ 1357 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1358 } 1359 uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){ 1360 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1361 } 1362 uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){ 1363 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1364 } 1365 uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){ 1366 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1367 } 1368 uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){ 1369 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1370 } 1371 uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){ 1372 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1373 } 1374 uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){ 1375 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1376 } 1377 1378 /* stop continuous cmds */ 1379 uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){ 1380 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1381 if (!connection){ 1382 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1383 } 1384 1385 switch (connection->state){ 1386 // respond when we receive response for (repeated) press command 1387 case AVCTP_W2_RECEIVE_PRESS_RESPONSE: 1388 connection->controller_press_and_hold_cmd_release = true; 1389 break; 1390 1391 // release already sent or on the way, nothing to do 1392 case AVCTP_W2_RECEIVE_RESPONSE: 1393 case AVCTP_W2_SEND_RELEASE_COMMAND: 1394 break; 1395 1396 // about to send next repeated press command or wait for it -> release right away 1397 case AVCTP_W2_SEND_PRESS_COMMAND: 1398 case AVCTP_W4_STOP: 1399 return avrcp_controller_request_pass_through_release_control_cmd(connection); 1400 1401 // otherwise reject request 1402 default: 1403 return ERROR_CODE_COMMAND_DISALLOWED; 1404 } 1405 return ERROR_CODE_SUCCESS; 1406 } 1407 1408 uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1409 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1410 if (!connection){ 1411 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1412 } 1413 return avrcp_controller_register_notification(connection, event_id); 1414 } 1415 1416 uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1417 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1418 if (!connection){ 1419 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1420 } 1421 if (!connection->controller_notifications_supported_by_target_queried){ 1422 return ERROR_CODE_COMMAND_DISALLOWED; 1423 } 1424 1425 if ((connection->notifications_supported_by_target & (1 << event_id)) == 0){ 1426 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1427 } 1428 1429 if ((connection->notifications_enabled & (1 << event_id)) == 0){ 1430 return ERROR_CODE_SUCCESS; 1431 } 1432 1433 connection->controller_notifications_to_deregister |= (1 << event_id); 1434 return ERROR_CODE_SUCCESS; 1435 } 1436 1437 uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){ 1438 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1439 if (!connection){ 1440 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1441 } 1442 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1443 1444 connection->state = AVCTP_W2_SEND_COMMAND; 1445 avrcp_controller_custom_command_data_init(connection, AVRCP_CMD_OPCODE_UNIT_INFO, AVRCP_CTYPE_STATUS, 1446 AVRCP_SUBUNIT_TYPE_UNIT, AVRCP_SUBUNIT_ID_IGNORE, AVRCP_PDU_ID_UNDEFINED, 1447 0); 1448 1449 connection->data = connection->message_body; 1450 memset(connection->data, 0xFF, 5); 1451 connection->data_len = 5; 1452 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1453 return ERROR_CODE_SUCCESS; 1454 } 1455 1456 uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){ 1457 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1458 if (!connection){ 1459 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1460 } 1461 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1462 1463 connection->state = AVCTP_W2_SEND_COMMAND; 1464 avrcp_controller_custom_command_data_init(connection, AVRCP_CMD_OPCODE_SUBUNIT_INFO, AVRCP_CTYPE_STATUS, 1465 AVRCP_SUBUNIT_TYPE_UNIT, AVRCP_SUBUNIT_ID_IGNORE, AVRCP_PDU_ID_UNDEFINED, 1466 0); 1467 1468 connection->data = connection->message_body; 1469 memset(connection->data, 0xFF, 5); 1470 connection->data[0] = 7; // page: 0, extension_code: 7 1471 connection->data_len = 5; 1472 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1473 return ERROR_CODE_SUCCESS; 1474 } 1475 1476 uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){ 1477 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1478 if (!connection){ 1479 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1480 } 1481 if (connection->state != AVCTP_CONNECTION_OPENED){ 1482 return ERROR_CODE_COMMAND_DISALLOWED; 1483 } 1484 avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_COMPANY); 1485 return ERROR_CODE_SUCCESS; 1486 } 1487 1488 uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){ 1489 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1490 if (!connection){ 1491 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1492 } 1493 if (connection->state != AVCTP_CONNECTION_OPENED){ 1494 return ERROR_CODE_COMMAND_DISALLOWED; 1495 } 1496 1497 if (!connection->controller_notifications_supported_by_target_queried){ 1498 connection->controller_notifications_supported_by_target_queried = true; 1499 avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_EVENT); 1500 return ERROR_CODE_SUCCESS; 1501 } 1502 1503 avrcp_controller_emit_supported_events(connection); 1504 return ERROR_CODE_SUCCESS; 1505 } 1506 1507 uint8_t avrcp_controller_get_play_status(uint16_t avrcp_cid){ 1508 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1509 if (!connection){ 1510 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1511 } 1512 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1513 1514 connection->state = AVCTP_W2_SEND_COMMAND; 1515 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_STATUS, AVRCP_PDU_ID_GET_PLAY_STATUS); 1516 1517 connection->data_len = 0; 1518 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1519 return ERROR_CODE_SUCCESS; 1520 } 1521 1522 uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){ 1523 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1524 if (!connection){ 1525 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1526 } 1527 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1528 1529 connection->state = AVCTP_W2_SEND_COMMAND; 1530 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_CONTROL, AVRCP_PDU_ID_SET_ADDRESSED_PLAYER); 1531 1532 connection->data_len = 2; 1533 big_endian_store_16(connection->data, 0, addressed_player_id); 1534 1535 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1536 return ERROR_CODE_SUCCESS; 1537 } 1538 1539 uint8_t avrcp_controller_get_element_attributes(uint16_t avrcp_cid, uint8_t num_attributes, avrcp_media_attribute_id_t * attributes){ 1540 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1541 if (!connection){ 1542 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1543 } 1544 1545 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1546 1547 if (num_attributes >= AVRCP_MEDIA_ATTR_RESERVED) { 1548 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1549 } 1550 1551 connection->state = AVCTP_W2_SEND_COMMAND; 1552 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_STATUS, AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES); 1553 1554 uint8_t pos = 0; 1555 // write 8 bytes value 1556 memset(connection->data, pos, 8); // identifier: PLAYING 1557 pos += 8; 1558 1559 uint8_t num_attributes_index = pos; 1560 pos++; 1561 1562 // If num_attributes is set to zero, all attribute information shall be returned, 1563 // and the AttributeID field is omitted 1564 connection->data[num_attributes_index] = 0; 1565 uint8_t i; 1566 for (i = 0; i < num_attributes; i++){ 1567 // ignore invalid attribute ID and "get all attributes" 1568 if (AVRCP_MEDIA_ATTR_ALL > attributes[i] && attributes[i] < AVRCP_MEDIA_ATTR_RESERVED){ 1569 // every attribute is 4 bytes long 1570 big_endian_store_32(connection->data, pos, attributes[i]); 1571 pos += 4; 1572 connection->data[num_attributes_index]++; 1573 } 1574 } 1575 1576 // Parameter Length 1577 connection->data_len = pos; 1578 1579 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1580 return ERROR_CODE_SUCCESS; 1581 } 1582 1583 uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){ 1584 return avrcp_controller_get_element_attributes(avrcp_cid, 0, NULL); 1585 } 1586 1587 uint8_t avrcp_controller_get_now_playing_info_for_media_attribute_id(uint16_t avrcp_cid, avrcp_media_attribute_id_t media_attribute_id){ 1588 if (media_attribute_id == AVRCP_MEDIA_ATTR_ALL){ 1589 return avrcp_controller_get_now_playing_info(avrcp_cid); 1590 } 1591 return avrcp_controller_get_element_attributes(avrcp_cid, 1, &media_attribute_id); 1592 } 1593 1594 uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){ 1595 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1596 if (!connection){ 1597 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1598 } 1599 1600 // 1601 // allow sending of multiple set abs volume commands without waiting for response 1602 // 1603 uint8_t status = ERROR_CODE_COMMAND_DISALLOWED; 1604 switch (connection->state){ 1605 case AVCTP_CONNECTION_OPENED: 1606 status = ERROR_CODE_SUCCESS; 1607 break; 1608 case AVCTP_W2_RECEIVE_RESPONSE: 1609 // - is pending response also set abs volume 1610 if (connection->command_opcode != AVRCP_CMD_OPCODE_VENDOR_DEPENDENT) break; 1611 if (connection->command_type != AVRCP_CTYPE_CONTROL) break; 1612 if (connection->subunit_type != AVRCP_SUBUNIT_TYPE_PANEL) break; 1613 if (connection->subunit_id != AVRCP_SUBUNIT_ID) break; 1614 if (connection->pdu_id != AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME) break; 1615 // - is next transaction id valid in window 1616 if (avrcp_controller_is_transaction_id_valid(connection, avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter)) == false) break; 1617 status = ERROR_CODE_SUCCESS; 1618 break; 1619 default: 1620 break; 1621 } 1622 if (status != ERROR_CODE_SUCCESS) return status; 1623 1624 connection->state = AVCTP_W2_SEND_COMMAND; 1625 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_CONTROL, AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME); 1626 1627 // Parameter Length 1628 connection->data_len = 1; 1629 connection->data[0] = volume; 1630 1631 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1632 return ERROR_CODE_SUCCESS; 1633 } 1634 1635 uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){ 1636 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1637 if (!connection){ 1638 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1639 } 1640 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1641 1642 connection->state = AVCTP_W2_SEND_COMMAND; 1643 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_STATUS, AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE); 1644 1645 connection->data_len = 5; 1646 connection->data[0] = 4; // NumPlayerApplicationSettingAttributeID 1647 // PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133 1648 connection->data[1] = 0x01; // equalizer (1-OFF, 2-ON) 1649 connection->data[2] = 0x02; // repeat (1-off, 2-single track, 3-all tracks, 4-group repeat) 1650 connection->data[3] = 0x03; // shuffle (1-off, 2-all tracks, 3-group shuffle) 1651 connection->data[4] = 0x04; // scan (1-off, 2-all tracks, 3-group scan) 1652 1653 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1654 return ERROR_CODE_SUCCESS; 1655 } 1656 1657 static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){ 1658 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1659 if (!connection){ 1660 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1661 } 1662 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1663 1664 connection->state = AVCTP_W2_SEND_COMMAND; 1665 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_CONTROL, AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE); 1666 1667 // Parameter Length 1668 connection->data_len = 3; 1669 connection->data[0] = 2; 1670 connection->data[1] = attr_id; 1671 connection->data[2] = attr_value; 1672 1673 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1674 return ERROR_CODE_SUCCESS; 1675 } 1676 1677 uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){ 1678 if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1679 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode); 1680 } 1681 1682 uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){ 1683 if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1684 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode); 1685 } 1686 1687 uint8_t avrcp_controller_play_item_for_scope(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){ 1688 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1689 if (!connection){ 1690 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1691 } 1692 if (connection->state != AVCTP_CONNECTION_OPENED){ 1693 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1694 return ERROR_CODE_COMMAND_DISALLOWED; 1695 } 1696 connection->state = AVCTP_W2_SEND_COMMAND; 1697 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_CONTROL, AVRCP_PDU_ID_PLAY_ITEM); 1698 1699 // Parameter Length 1700 connection->data_len = 11; 1701 connection->data[0] = scope; 1702 memset(&connection->data[1], 0, 8); 1703 if (uid){ 1704 (void)memcpy(&connection->data[1], uid, 8); 1705 } 1706 big_endian_store_16(connection->data, 9, uid_counter); 1707 1708 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1709 return ERROR_CODE_SUCCESS; 1710 } 1711 1712 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){ 1713 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1714 if (!connection){ 1715 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1716 } 1717 if (connection->state != AVCTP_CONNECTION_OPENED){ 1718 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1719 return ERROR_CODE_COMMAND_DISALLOWED; 1720 } 1721 1722 connection->state = AVCTP_W2_SEND_COMMAND; 1723 avrcp_controller_vendor_dependent_command_data_init(connection, AVRCP_CTYPE_CONTROL, AVRCP_PDU_ID_ADD_TO_NOW_PLAYING); 1724 1725 // Parameter Length 1726 connection->data_len = 11; 1727 connection->data[0] = scope; 1728 memset(&connection->data[1], 0, 8); 1729 if (uid){ 1730 (void)memcpy(&connection->data[1], uid, 8); 1731 } 1732 big_endian_store_16(connection->data, 9, uid_counter); 1733 1734 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1735 return ERROR_CODE_SUCCESS; 1736 } 1737 1738 uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){ 1739 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1740 if (!connection){ 1741 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1742 } 1743 connection->controller_max_num_fragments = max_num_fragments; 1744 return ERROR_CODE_SUCCESS; 1745 } 1746 1747 1748 uint8_t avrcp_controller_send_custom_command(uint16_t avrcp_cid, 1749 avrcp_command_type_t command_type, 1750 avrcp_subunit_type_t subunit_type, avrcp_subunit_id_t subunit_id, 1751 avrcp_pdu_id_t pdu_id, uint32_t company_id, 1752 const uint8_t * data, uint16_t data_len){ 1753 1754 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1755 if (!connection){ 1756 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1757 } 1758 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1759 1760 connection->state = AVCTP_W2_SEND_COMMAND; 1761 avrcp_controller_custom_command_data_init(connection, AVRCP_CMD_OPCODE_VENDOR_DEPENDENT, command_type, subunit_type, 1762 subunit_id, pdu_id, company_id); 1763 1764 connection->data = (uint8_t *)data; 1765 connection->data_len = data_len; 1766 1767 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1768 return ERROR_CODE_SUCCESS; 1769 } 1770