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 // made public in avrcp_controller.h 49 avrcp_context_t avrcp_controller_context; 50 51 static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){ 52 return controller_supported_features & AVRCP_FEATURE_MASK_BROWSING; 53 } 54 55 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){ 56 avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name); 57 } 58 59 static void avrcp_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){ 60 btstack_assert(callback != NULL); 61 62 uint8_t event[8]; 63 int pos = 0; 64 event[pos++] = HCI_EVENT_AVRCP_META; 65 event[pos++] = sizeof(event) - 2; 66 event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE; 67 little_endian_store_16(event, pos, avrcp_cid); 68 pos += 2; 69 event[pos++] = ctype; 70 event[pos++] = repeat_mode; 71 event[pos++] = shuffle_mode; 72 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 73 } 74 75 static void avrcp_emit_operation_status(btstack_packet_handler_t callback, uint8_t subevent, uint16_t avrcp_cid, uint8_t ctype, uint8_t operation_id){ 76 btstack_assert(callback != NULL); 77 78 uint8_t event[7]; 79 int pos = 0; 80 event[pos++] = HCI_EVENT_AVRCP_META; 81 event[pos++] = sizeof(event) - 2; 82 event[pos++] = subevent; 83 little_endian_store_16(event, pos, avrcp_cid); 84 pos += 2; 85 event[pos++] = ctype; 86 event[pos++] = operation_id; 87 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 88 } 89 90 static void avrcp_press_and_hold_timeout_handler(btstack_timer_source_t * timer){ 91 UNUSED(timer); 92 avrcp_connection_t * connection = (avrcp_connection_t*) btstack_run_loop_get_timer_context(timer); 93 btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout 94 btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer); 95 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 96 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 97 } 98 99 static void avrcp_press_and_hold_timer_start(avrcp_connection_t * connection){ 100 btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer); 101 btstack_run_loop_set_timer_handler(&connection->press_and_hold_cmd_timer, avrcp_press_and_hold_timeout_handler); 102 btstack_run_loop_set_timer_context(&connection->press_and_hold_cmd_timer, connection); 103 btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout 104 btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer); 105 } 106 107 static void avrcp_press_and_hold_timer_stop(avrcp_connection_t * connection){ 108 connection->continuous_fast_forward_cmd = 0; 109 btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer); 110 } 111 112 static uint8_t request_pass_through_release_control_cmd(avrcp_connection_t * connection){ 113 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 114 if (connection->continuous_fast_forward_cmd){ 115 avrcp_press_and_hold_timer_stop(connection); 116 } 117 connection->cmd_operands[0] = 0x80 | connection->cmd_operands[0]; 118 connection->transaction_label++; 119 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 120 return ERROR_CODE_SUCCESS; 121 } 122 123 static inline uint8_t 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){ 124 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 125 if (!connection){ 126 log_error("avrcp: could not find a connection. avrcp cid 0x%02x", avrcp_cid); 127 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 128 } 129 130 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 131 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 132 connection->command_opcode = AVRCP_CMD_OPCODE_PASS_THROUGH; 133 connection->command_type = AVRCP_CTYPE_CONTROL; 134 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 135 connection->subunit_id = AVRCP_SUBUNIT_ID; 136 connection->cmd_operands_length = 0; 137 138 connection->continuous_fast_forward_cmd = continuous_fast_forward_cmd; 139 connection->cmd_operands_length = 2; 140 connection->cmd_operands[0] = opid; 141 if (playback_speed > 0){ 142 connection->cmd_operands[2] = playback_speed; 143 connection->cmd_operands_length++; 144 } 145 connection->cmd_operands[1] = connection->cmd_operands_length - 2; 146 147 if (connection->continuous_fast_forward_cmd){ 148 avrcp_press_and_hold_timer_start(connection); 149 } 150 151 connection->transaction_label++; 152 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 153 return ERROR_CODE_SUCCESS; 154 } 155 156 static uint8_t request_single_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 157 return request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, 0); 158 } 159 160 static uint8_t request_continuous_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 161 return request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, 1); 162 } 163 164 #define AVRCP_CMD_BUFFER_SIZE 30 165 static uint16_t avrcp_get_max_payload_size_for_packet_type(avrcp_packet_type_t packet_type){ 166 switch (packet_type){ 167 case AVRCP_SINGLE_PACKET: 168 return AVRCP_CMD_BUFFER_SIZE - 3; 169 case AVRCP_START_PACKET: 170 return AVRCP_CMD_BUFFER_SIZE - 4; 171 case AVRCP_CONTINUE_PACKET: 172 case AVRCP_END_PACKET: 173 return AVRCP_CMD_BUFFER_SIZE - 1; 174 } 175 return 0; 176 } 177 178 static int avrcp_send_cmd(avrcp_connection_t * connection, avrcp_packet_type_t packet_type){ 179 uint8_t command[AVRCP_CMD_BUFFER_SIZE]; 180 int pos = 0; 181 182 // non-fragmented: transport header (1) + PID (2) 183 // fragmented: transport header (1) + num packets (1) + PID (2) 184 185 // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 186 command[pos++] = (connection->transaction_label << 4) | (packet_type << 2) | (AVRCP_COMMAND_FRAME << 1) | 0; 187 188 if (packet_type == AVRCP_START_PACKET){ 189 // num packets: (3 bytes overhead (PID, num packets) + command) / (MTU - transport header). 190 // to get number of packets using integer division, we subtract 1 from the data e.g. len = 5, packet size 5 => need 1 packet 191 command[pos++] = ((connection->cmd_operands_fragmented_len + 3 - 1) / (AVRCP_CMD_BUFFER_SIZE - 1)) + 1; 192 } 193 194 if ((packet_type == AVRCP_SINGLE_PACKET) || (packet_type == AVRCP_START_PACKET)){ 195 // Profile IDentifier (PID) 196 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 197 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 198 199 // command_type 200 command[pos++] = connection->command_type; 201 // subunit_type | subunit ID 202 command[pos++] = (connection->subunit_type << 3) | connection->subunit_id; 203 // opcode 204 command[pos++] = (uint8_t)connection->command_opcode; 205 } 206 207 if (packet_type == AVRCP_SINGLE_PACKET){ 208 // operands 209 (void)memcpy(command + pos, connection->cmd_operands, 210 connection->cmd_operands_length); 211 pos += connection->cmd_operands_length; 212 } else { 213 uint16_t bytes_free = AVRCP_CMD_BUFFER_SIZE - pos; 214 uint16_t bytes_to_store = connection->cmd_operands_fragmented_len-connection->cmd_operands_fragmented_pos; 215 uint16_t bytes_to_copy = btstack_min(bytes_to_store, bytes_free); 216 (void)memcpy(command + pos, 217 &connection->cmd_operands_fragmented_buffer[connection->cmd_operands_fragmented_pos], 218 bytes_to_copy); 219 pos += bytes_to_copy; 220 connection->cmd_operands_fragmented_pos += bytes_to_copy; 221 } 222 223 return l2cap_send(connection->l2cap_signaling_cid, command, pos); 224 } 225 226 static int avrcp_register_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){ 227 if (connection->notifications_to_deregister & (1 << event_id)) return 0; 228 if (connection->notifications_enabled & (1 << event_id)) return 0; 229 if (connection->notifications_to_register & (1 << event_id)) return 0; 230 connection->notifications_to_register |= (1 << event_id); 231 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 232 return 1; 233 } 234 235 static void avrcp_prepare_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){ 236 connection->transaction_label++; 237 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 238 connection->command_type = AVRCP_CTYPE_NOTIFY; 239 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 240 connection->subunit_id = AVRCP_SUBUNIT_ID; 241 int pos = 0; 242 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 243 pos += 3; 244 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REGISTER_NOTIFICATION; 245 connection->cmd_operands[pos++] = 0; // reserved(upper 6) | packet_type -> 0 246 big_endian_store_16(connection->cmd_operands, pos, 5); // parameter length 247 pos += 2; 248 connection->cmd_operands[pos++] = event_id; 249 big_endian_store_32(connection->cmd_operands, pos, 1); // send notification on playback position every second, for other notifications it is ignored 250 pos += 4; 251 connection->cmd_operands_length = pos; 252 // AVRCP_SPEC_V14.pdf 166 253 // answer page 61 254 } 255 256 257 static void avrcp_parser_reset(avrcp_connection_t * connection){ 258 connection->list_offset = 0; 259 connection->num_attributes = 0; 260 connection->num_parsed_attributes = 0; 261 connection->parser_attribute_header_pos = 0; 262 connection->num_received_fragments = 0; 263 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 264 } 265 266 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){ 267 uint8_t event[7]; 268 int pos = 0; 269 event[pos++] = HCI_EVENT_AVRCP_META; 270 event[pos++] = sizeof(event) - 2; 271 event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE; 272 little_endian_store_16(event, pos, avrcp_cid); 273 pos += 2; 274 event[pos++] = ctype; 275 event[pos++] = status; 276 // printf_hexdump(event, pos); 277 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 278 } 279 280 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){ 281 uint8_t event[HCI_EVENT_BUFFER_SIZE]; 282 int pos = 0; 283 event[pos++] = HCI_EVENT_AVRCP_META; 284 // reserve one byte for subevent type and data len 285 int data_len_pos = pos; 286 pos++; 287 int subevent_type_pos = pos; 288 pos++; 289 little_endian_store_16(event, pos, avrcp_cid); 290 pos += 2; 291 event[pos++] = ctype; 292 293 switch (attr_id){ 294 case AVRCP_MEDIA_ATTR_TITLE: 295 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO; 296 event[pos++] = value_len; 297 (void)memcpy(event + pos, value, value_len); 298 break; 299 case AVRCP_MEDIA_ATTR_ARTIST: 300 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO; 301 event[pos++] = value_len; 302 (void)memcpy(event + pos, value, value_len); 303 break; 304 case AVRCP_MEDIA_ATTR_ALBUM: 305 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO; 306 event[pos++] = value_len; 307 (void)memcpy(event + pos, value, value_len); 308 break; 309 case AVRCP_MEDIA_ATTR_GENRE: 310 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO; 311 event[pos++] = value_len; 312 (void)memcpy(event + pos, value, value_len); 313 break; 314 case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS: 315 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO; 316 if (value){ 317 little_endian_store_32(event, pos, btstack_atoi((char *)value)); 318 } else { 319 little_endian_store_32(event, pos, 0); 320 } 321 pos += 4; 322 break; 323 case AVRCP_MEDIA_ATTR_TRACK: 324 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO; 325 if (value){ 326 event[pos++] = btstack_atoi((char *)value); 327 } else { 328 event[pos++] = 0; 329 } 330 break; 331 case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS: 332 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO; 333 if (value){ 334 event[pos++] = btstack_atoi((char *)value); 335 } else { 336 event[pos++] = 0; 337 } 338 break; 339 default: 340 break; 341 } 342 event[data_len_pos] = pos - 2; 343 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 344 } 345 346 static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){ 347 uint16_t attribute_total_value_len; 348 uint32_t attribute_id; 349 // printf("avrcp_parser_process_byte: %02x, state %02x\n", byte, connection->parser_state); 350 switch(connection->parser_state){ 351 case AVRCP_PARSER_GET_ATTRIBUTE_HEADER: 352 connection->parser_attribute_header[connection->parser_attribute_header_pos++] = byte; 353 connection->list_offset++; 354 355 if (connection->parser_attribute_header_pos < AVRCP_ATTRIBUTE_HEADER_LEN) return; 356 357 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 358 connection->attribute_value_len = btstack_min(attribute_total_value_len, AVRCP_MAX_ATTRIBUTTE_SIZE); 359 if (connection->attribute_value_len > 0){ 360 // get ready for attribute value 361 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_VALUE; 362 return; 363 } 364 365 // emit empty attribute 366 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 367 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); 368 369 // done, see below 370 break; 371 372 case AVRCP_PARSER_GET_ATTRIBUTE_VALUE: 373 connection->attribute_value[connection->attribute_value_offset++] = byte; 374 connection->list_offset++; 375 376 if (connection->attribute_value_offset < connection->attribute_value_len) return; 377 378 // emit (potentially partial) attribute 379 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 380 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); 381 382 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 383 if (connection->attribute_value_offset < attribute_total_value_len){ 384 // ignore rest of attribute 385 connection->parser_state = AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE; 386 return; 387 } 388 389 // done, see below 390 break; 391 392 case AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE: 393 connection->attribute_value_offset++; 394 connection->list_offset++; 395 396 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 397 if (connection->attribute_value_offset < attribute_total_value_len) return; 398 399 // done, see below 400 break; 401 402 default: 403 return; 404 } 405 406 // attribute fully read, check if more to come 407 if (connection->list_offset < connection->list_size){ 408 // more to come, reset parser 409 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 410 connection->parser_attribute_header_pos = 0; 411 connection->attribute_value_offset = 0; 412 } else { 413 // fully done 414 avrcp_parser_reset(connection); 415 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 0); 416 } 417 } 418 419 static void avrcp_source_parse_and_emit_element_attrs(uint8_t * packet, uint16_t num_bytes_to_read, avrcp_connection_t * connection, avrcp_command_type_t ctype){ 420 int i; 421 for (i=0;i<num_bytes_to_read;i++){ 422 avrcp_parser_process_byte(packet[i], connection, ctype); 423 } 424 } 425 426 static uint8_t avrcp_controller_request_abort_continuation(avrcp_connection_t * connection){ 427 connection->state = AVCTP_W2_SEND_COMMAND; 428 connection->transaction_label++; 429 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 430 connection->command_type = AVRCP_CTYPE_CONTROL; 431 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 432 connection->subunit_id = AVRCP_SUBUNIT_ID; 433 int pos = 0; 434 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 435 pos += 3; 436 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE; // PDU ID 437 connection->cmd_operands[pos++] = 0; 438 // Parameter Length 439 connection->cmd_operands_length = 8; 440 big_endian_store_16(connection->cmd_operands, pos, 1); 441 pos += 2; 442 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; 443 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 444 return ERROR_CODE_SUCCESS; 445 } 446 447 448 static uint8_t avrcp_controller_request_continue_response(avrcp_connection_t * connection){ 449 connection->state = AVCTP_W2_SEND_COMMAND; 450 connection->transaction_label++; 451 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 452 connection->command_type = AVRCP_CTYPE_CONTROL; 453 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 454 connection->subunit_id = AVRCP_SUBUNIT_ID; 455 int pos = 0; 456 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 457 pos += 3; 458 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE; // PDU ID 459 connection->cmd_operands[pos++] = 0; 460 // Parameter Length 461 connection->cmd_operands_length = 8; 462 big_endian_store_16(connection->cmd_operands, pos, 1); 463 pos += 2; 464 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; 465 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 466 return ERROR_CODE_SUCCESS; 467 } 468 469 static void avrcp_handle_l2cap_data_packet_for_signaling_connection(avrcp_connection_t * connection, uint8_t *packet, uint16_t size){ 470 uint8_t operands[20]; 471 472 int pos = 3; 473 474 if (size < 6u) return; 475 476 uint8_t pdu_id; 477 478 avrcp_frame_type_t frame_type = (avrcp_frame_type_t)((packet[0] >> 1) & 0x01); 479 if (frame_type != AVRCP_RESPONSE_FRAME) return; 480 481 avrcp_packet_type_t packet_type = (avrcp_packet_type_t)((packet[0] >> 2) & 0x03); 482 switch (packet_type){ 483 case AVRCP_SINGLE_PACKET: 484 break; 485 default: 486 log_info("Fragmentation is not supported"); 487 return; 488 } 489 490 avrcp_command_type_t ctype = (avrcp_command_type_t) packet[pos++]; 491 492 uint8_t byte_value = packet[pos++]; 493 avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3); 494 avrcp_subunit_type_t subunit_id = (avrcp_subunit_type_t) (byte_value & 0x07); 495 uint8_t opcode = packet[pos++]; 496 // Company ID (3) 497 pos += 3; 498 499 uint16_t param_length; 500 501 switch (opcode){ 502 case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{ 503 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 504 connection->state = AVCTP_CONNECTION_OPENED; 505 // operands: 506 (void)memcpy(operands, packet + pos, 5); 507 uint8_t unit_type = operands[1] >> 3; 508 uint8_t max_subunit_ID = operands[1] & 0x07; 509 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); 510 break; 511 } 512 case AVRCP_CMD_OPCODE_UNIT_INFO:{ 513 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 514 connection->state = AVCTP_CONNECTION_OPENED; 515 // operands: 516 (void)memcpy(operands, packet + pos, 5); 517 uint8_t unit_type = operands[1] >> 3; 518 uint8_t unit = operands[1] & 0x07; 519 uint32_t company_id = (operands[2] << 16) | (operands[3] << 8) | operands[4]; 520 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, 521 ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id); 522 break; 523 } 524 case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT: 525 if ((size - pos) < 7) { 526 log_error("avrcp: wrong packet size"); 527 return; 528 }; 529 // operands: 530 (void)memcpy(operands, packet + pos, 7); 531 pos += 7; 532 pdu_id = operands[3]; 533 534 if ((connection->state != AVCTP_W2_RECEIVE_RESPONSE) && (pdu_id != AVRCP_PDU_ID_REGISTER_NOTIFICATION)){ 535 log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state); 536 return; 537 } 538 connection->state = AVCTP_CONNECTION_OPENED; 539 540 param_length = big_endian_read_16(operands, 5); 541 542 log_info(" VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype)); 543 switch (pdu_id){ 544 case AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE:{ 545 uint8_t num_attributes = packet[pos++]; 546 int i; 547 avrcp_repeat_mode_t repeat_mode = AVRCP_REPEAT_MODE_INVALID; 548 avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID; 549 for (i = 0; i < num_attributes; i++){ 550 uint8_t attribute_id = packet[pos++]; 551 uint8_t value = packet[pos++]; 552 switch (attribute_id){ 553 case 0x02: 554 repeat_mode = (avrcp_repeat_mode_t) value; 555 break; 556 case 0x03: 557 shuffle_mode = (avrcp_shuffle_mode_t) value; 558 break; 559 default: 560 break; 561 } 562 } 563 avrcp_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode); 564 break; 565 } 566 case AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE:{ 567 uint8_t event[6]; 568 int offset = 0; 569 event[offset++] = HCI_EVENT_AVRCP_META; 570 event[offset++] = sizeof(event) - 2; 571 event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE; 572 little_endian_store_16(event, offset, connection->avrcp_cid); 573 offset += 2; 574 event[offset++] = ctype; 575 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 576 break; 577 } 578 case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{ 579 uint8_t event[7]; 580 int offset = 0; 581 event[offset++] = HCI_EVENT_AVRCP_META; 582 event[offset++] = sizeof(event) - 2; 583 event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE; 584 little_endian_store_16(event, offset, connection->avrcp_cid); 585 offset += 2; 586 event[offset++] = ctype; 587 event[offset++] = packet[pos++]; 588 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 589 break; 590 } 591 case AVRCP_PDU_ID_GET_CAPABILITIES:{ 592 avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++]; 593 uint8_t capability_count = packet[pos++]; 594 int i; 595 596 switch (capability_id){ 597 int offset = 0; 598 uint8_t event[10]; 599 600 case AVRCP_CAPABILITY_ID_COMPANY: 601 for (i = 0; i < capability_count; i++){ 602 uint32_t company_id = big_endian_read_24(packet, pos); 603 pos += 3; 604 log_info(" 0x%06" PRIx32 ", ", company_id); 605 606 offset = 0; 607 event[offset++] = HCI_EVENT_AVRCP_META; 608 event[offset++] = sizeof(event) - 2; 609 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID; 610 little_endian_store_16(event, offset, connection->avrcp_cid); 611 offset += 2; 612 event[offset++] = ctype; 613 event[offset++] = 0; 614 little_endian_store_24(event, offset, company_id); 615 offset += 3; 616 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 617 break; 618 } 619 620 offset = 0; 621 event[offset++] = HCI_EVENT_AVRCP_META; 622 event[offset++] = sizeof(event) - 2; 623 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE; 624 little_endian_store_16(event, offset, connection->avrcp_cid); 625 offset += 2; 626 event[offset++] = ctype; 627 event[offset++] = 0; 628 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 629 break; 630 631 case AVRCP_CAPABILITY_ID_EVENT: 632 for (i = 0; i < capability_count; i++){ 633 uint8_t event_id = packet[pos++]; 634 log_info(" 0x%02x %s", event_id, avrcp_event2str(event_id)); 635 636 offset = 0; 637 event[offset++] = HCI_EVENT_AVRCP_META; 638 event[offset++] = sizeof(event) - 2; 639 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID; 640 little_endian_store_16(event, offset, connection->avrcp_cid); 641 offset += 2; 642 event[offset++] = ctype; 643 event[offset++] = 0; 644 event[offset++] = event_id; 645 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 646 } 647 648 offset = 0; 649 event[offset++] = HCI_EVENT_AVRCP_META; 650 event[offset++] = sizeof(event) - 2; 651 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE; 652 little_endian_store_16(event, offset, connection->avrcp_cid); 653 offset += 2; 654 event[offset++] = ctype; 655 event[offset++] = 0; 656 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 657 break; 658 } 659 break; 660 } 661 case AVRCP_PDU_ID_GET_PLAY_STATUS:{ 662 uint32_t song_length = big_endian_read_32(packet, pos); 663 pos += 4; 664 uint32_t song_position = big_endian_read_32(packet, pos); 665 pos += 4; 666 uint8_t play_status = packet[pos]; 667 668 uint8_t event[15]; 669 int offset = 0; 670 event[offset++] = HCI_EVENT_AVRCP_META; 671 event[offset++] = sizeof(event) - 2; 672 event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS; 673 little_endian_store_16(event, offset, connection->avrcp_cid); 674 offset += 2; 675 event[offset++] = ctype; 676 little_endian_store_32(event, offset, song_length); 677 offset += 4; 678 little_endian_store_32(event, offset, song_position); 679 offset += 4; 680 event[offset++] = play_status; 681 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 682 break; 683 } 684 case AVRCP_PDU_ID_REGISTER_NOTIFICATION:{ 685 avrcp_notification_event_id_t event_id = (avrcp_notification_event_id_t) packet[pos++]; 686 uint16_t event_mask = (1 << event_id); 687 uint16_t reset_event_mask = ~event_mask; 688 switch (ctype){ 689 case AVRCP_CTYPE_RESPONSE_INTERIM: 690 // register as enabled 691 connection->notifications_enabled |= event_mask; 692 break; 693 case AVRCP_CTYPE_RESPONSE_CHANGED_STABLE: 694 // received change, event is considered deregistered 695 // we are re-enabling it automatically, if it is not 696 // explicitly disabled 697 connection->notifications_enabled &= reset_event_mask; 698 if (! (connection->notifications_to_deregister & event_mask)){ 699 avrcp_register_notification(connection, event_id); 700 } else { 701 connection->notifications_to_deregister &= reset_event_mask; 702 } 703 break; 704 default: 705 connection->notifications_to_register &= reset_event_mask; 706 connection->notifications_enabled &= reset_event_mask; 707 connection->notifications_to_deregister &= reset_event_mask; 708 break; 709 } 710 711 switch (event_id){ 712 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{ 713 uint32_t song_position = big_endian_read_32(packet, pos); 714 uint8_t event[10]; 715 int offset = 0; 716 event[offset++] = HCI_EVENT_AVRCP_META; 717 event[offset++] = sizeof(event) - 2; 718 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED; 719 little_endian_store_16(event, offset, connection->avrcp_cid); 720 offset += 2; 721 event[offset++] = ctype; 722 little_endian_store_32(event, offset, song_position); 723 offset += 4; 724 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 725 break; 726 } 727 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{ 728 uint8_t event[7]; 729 int offset = 0; 730 event[offset++] = HCI_EVENT_AVRCP_META; 731 event[offset++] = sizeof(event) - 2; 732 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED; 733 little_endian_store_16(event, offset, connection->avrcp_cid); 734 offset += 2; 735 event[offset++] = ctype; 736 event[offset++] = packet[pos]; 737 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 738 break; 739 } 740 case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{ 741 uint8_t event[6]; 742 int offset = 0; 743 event[offset++] = HCI_EVENT_AVRCP_META; 744 event[offset++] = sizeof(event) - 2; 745 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED; 746 little_endian_store_16(event, offset, connection->avrcp_cid); 747 offset += 2; 748 event[offset++] = ctype; 749 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 750 break; 751 } 752 case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{ 753 uint8_t event[6]; 754 int offset = 0; 755 event[offset++] = HCI_EVENT_AVRCP_META; 756 event[offset++] = sizeof(event) - 2; 757 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED; 758 little_endian_store_16(event, offset, connection->avrcp_cid); 759 offset += 2; 760 event[offset++] = ctype; 761 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 762 break; 763 } 764 case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{ 765 uint8_t event[6]; 766 int offset = 0; 767 event[offset++] = HCI_EVENT_AVRCP_META; 768 event[offset++] = sizeof(event) - 2; 769 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED; 770 little_endian_store_16(event, offset, connection->avrcp_cid); 771 offset += 2; 772 event[offset++] = ctype; 773 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 774 break; 775 } 776 case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{ 777 uint8_t event[7]; 778 int offset = 0; 779 event[offset++] = HCI_EVENT_AVRCP_META; 780 event[offset++] = sizeof(event) - 2; 781 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED; 782 little_endian_store_16(event, offset, connection->avrcp_cid); 783 offset += 2; 784 event[offset++] = ctype; 785 event[offset++] = packet[pos++] & 0x7F; 786 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 787 break; 788 } 789 case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{ 790 uint8_t event[8]; 791 uint16_t uuid = big_endian_read_16(packet, pos); 792 int offset = 0; 793 event[offset++] = HCI_EVENT_AVRCP_META; 794 event[offset++] = sizeof(event) - 2; 795 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED; 796 little_endian_store_16(event, offset, connection->avrcp_cid); 797 offset += 2; 798 event[offset++] = ctype; 799 little_endian_store_16(event, offset, uuid); 800 offset += 2; 801 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 802 break; 803 } 804 805 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{ 806 uint8_t event[6]; 807 int offset = 0; 808 event[offset++] = HCI_EVENT_AVRCP_META; 809 event[offset++] = sizeof(event) - 2; 810 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END; 811 little_endian_store_16(event, offset, connection->avrcp_cid); 812 offset += 2; 813 event[offset++] = ctype; 814 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 815 break; 816 } 817 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{ 818 uint8_t event[6]; 819 int offset = 0; 820 event[offset++] = HCI_EVENT_AVRCP_META; 821 event[offset++] = sizeof(event) - 2; 822 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START; 823 little_endian_store_16(event, offset, connection->avrcp_cid); 824 offset += 2; 825 event[offset++] = ctype; 826 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 827 break; 828 } 829 case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{ 830 uint8_t event[7]; 831 int offset = 0; 832 event[offset++] = HCI_EVENT_AVRCP_META; 833 event[offset++] = sizeof(event) - 2; 834 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED; 835 little_endian_store_16(event, offset, connection->avrcp_cid); 836 offset += 2; 837 event[offset++] = ctype; 838 event[offset++] = packet[pos++]; 839 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 840 break; 841 } 842 843 case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{ 844 uint8_t event[7]; 845 int offset = 0; 846 event[offset++] = HCI_EVENT_AVRCP_META; 847 event[offset++] = sizeof(event) - 2; 848 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED; 849 little_endian_store_16(event, offset, connection->avrcp_cid); 850 offset += 2; 851 event[offset++] = ctype; 852 event[offset++] = packet[pos]; 853 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 854 break; 855 } 856 857 case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED: 858 default: 859 log_info("avrcp: not implemented"); 860 break; 861 } 862 if (connection->notifications_to_register != 0){ 863 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 864 } 865 break; 866 } 867 868 case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{ 869 switch (packet_type){ 870 case AVRCP_START_PACKET: 871 case AVRCP_SINGLE_PACKET: 872 avrcp_parser_reset(connection); 873 connection->list_size = param_length; 874 connection->num_attributes = packet[pos++]; 875 876 avrcp_source_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 877 878 if (packet_type == AVRCP_START_PACKET){ 879 avrcp_controller_request_continue_response(connection); 880 } 881 break; 882 case AVRCP_CONTINUE_PACKET: 883 case AVRCP_END_PACKET: 884 connection->num_received_fragments++; 885 if (connection->num_received_fragments < connection->max_num_fragments){ 886 avrcp_source_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 887 if (packet_type == AVRCP_CONTINUE_PACKET){ 888 avrcp_controller_request_continue_response(connection); 889 } 890 } else { 891 avrcp_controller_request_abort_continuation(connection); 892 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1); 893 avrcp_parser_reset(connection); 894 } 895 break; 896 } 897 } 898 default: 899 break; 900 } 901 break; 902 case AVRCP_CMD_OPCODE_PASS_THROUGH:{ 903 // 0x80 | connection->cmd_operands[0] 904 uint8_t operation_id = packet[pos++]; 905 switch (connection->state){ 906 case AVCTP_W2_RECEIVE_PRESS_RESPONSE: 907 if (connection->continuous_fast_forward_cmd){ 908 connection->state = AVCTP_W4_STOP; 909 } else { 910 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 911 } 912 break; 913 case AVCTP_W2_RECEIVE_RESPONSE: 914 connection->state = AVCTP_CONNECTION_OPENED; 915 break; 916 default: 917 break; 918 } 919 if (connection->state == AVCTP_W4_STOP){ 920 avrcp_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id); 921 } 922 if (connection->state == AVCTP_CONNECTION_OPENED) { 923 // RELEASE response 924 operation_id = operation_id & 0x7F; 925 avrcp_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id); 926 } 927 if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){ 928 // PRESS response 929 request_pass_through_release_control_cmd(connection); 930 } 931 break; 932 } 933 default: 934 break; 935 } 936 937 // trigger pending notification reqistrations 938 if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->notifications_to_register){ 939 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 940 } 941 } 942 943 static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){ 944 int i; 945 switch (connection->state){ 946 case AVCTP_W2_SEND_PRESS_COMMAND: 947 connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE; 948 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 949 break; 950 case AVCTP_W2_SEND_COMMAND: 951 case AVCTP_W2_SEND_RELEASE_COMMAND: 952 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 953 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 954 break; 955 case AVCTP_CONNECTION_OPENED: 956 if (connection->notifications_to_register != 0){ 957 for (i = 1; i <= AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED; i++){ 958 if (connection->notifications_to_register & (1<<i)){ 959 connection->notifications_to_register &= ~ (1 << i); 960 avrcp_prepare_notification(connection, (avrcp_notification_event_id_t) i); 961 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 962 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 963 return; 964 } 965 } 966 } 967 return; 968 case AVCTP_W2_SEND_FRAGMENTED_COMMAND: 969 if (connection->cmd_operands_fragmented_pos == 0){ 970 avrcp_send_cmd(connection, AVRCP_START_PACKET); 971 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 972 } else { 973 if ((connection->cmd_operands_fragmented_len - connection->cmd_operands_fragmented_pos) > avrcp_get_max_payload_size_for_packet_type(AVRCP_CONTINUE_PACKET)){ 974 avrcp_send_cmd(connection, AVRCP_CONTINUE_PACKET); 975 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 976 } else { 977 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 978 avrcp_send_cmd(connection, AVRCP_END_PACKET); 979 } 980 } 981 default: 982 return; 983 } 984 } 985 986 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 987 avrcp_connection_t * connection; 988 989 switch (packet_type) { 990 case L2CAP_DATA_PACKET: 991 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 992 avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size); 993 break; 994 995 case HCI_EVENT_PACKET: 996 switch (hci_event_packet_get_type(packet)){ 997 case L2CAP_EVENT_CAN_SEND_NOW: 998 connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 999 avrcp_controller_handle_can_send_now(connection); 1000 break; 1001 default: 1002 break; 1003 } 1004 default: 1005 break; 1006 } 1007 } 1008 1009 void avrcp_controller_init(void){ 1010 avrcp_controller_context.role = AVRCP_CONTROLLER; 1011 avrcp_controller_context.packet_handler = avrcp_controller_packet_handler; 1012 avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler); 1013 } 1014 1015 void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){ 1016 btstack_assert(callback != NULL); 1017 avrcp_controller_context.avrcp_callback = callback; 1018 } 1019 1020 uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){ 1021 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1022 if (!connection){ 1023 log_error("avrcp_unit_info: could not find a connection."); 1024 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1025 } 1026 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1027 connection->state = AVCTP_W2_SEND_COMMAND; 1028 1029 connection->transaction_label++; 1030 connection->command_opcode = AVRCP_CMD_OPCODE_UNIT_INFO; 1031 connection->command_type = AVRCP_CTYPE_STATUS; 1032 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1033 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1034 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1035 connection->cmd_operands_length = 5; 1036 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1037 return ERROR_CODE_SUCCESS; 1038 } 1039 1040 uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){ 1041 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1042 if (!connection){ 1043 log_error("avrcp_unit_info: could not find a connection."); 1044 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1045 } 1046 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1047 connection->state = AVCTP_W2_SEND_COMMAND; 1048 1049 connection->transaction_label++; 1050 connection->command_opcode = AVRCP_CMD_OPCODE_SUBUNIT_INFO; 1051 connection->command_type = AVRCP_CTYPE_STATUS; 1052 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1053 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1054 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1055 connection->cmd_operands[0] = 7; // page: 0, extention_code: 7 1056 connection->cmd_operands_length = 5; 1057 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1058 return ERROR_CODE_SUCCESS; 1059 } 1060 1061 static uint8_t avrcp_controller_get_capabilities(uint16_t avrcp_cid, uint8_t capability_id){ 1062 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1063 if (!connection){ 1064 log_error("avrcp_get_capabilities: could not find a connection."); 1065 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1066 } 1067 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1068 connection->state = AVCTP_W2_SEND_COMMAND; 1069 1070 connection->transaction_label++; 1071 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1072 connection->command_type = AVRCP_CTYPE_STATUS; 1073 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1074 connection->subunit_id = AVRCP_SUBUNIT_ID; 1075 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1076 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CAPABILITIES; // PDU ID 1077 connection->cmd_operands[4] = 0; 1078 big_endian_store_16(connection->cmd_operands, 5, 1); // parameter length 1079 connection->cmd_operands[7] = capability_id; // capability ID 1080 connection->cmd_operands_length = 8; 1081 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1082 return ERROR_CODE_SUCCESS; 1083 } 1084 1085 uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){ 1086 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_COMPANY); 1087 } 1088 1089 uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){ 1090 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_EVENT); 1091 } 1092 1093 1094 uint8_t avrcp_controller_play(uint16_t avrcp_cid){ 1095 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1096 } 1097 1098 uint8_t avrcp_controller_stop(uint16_t avrcp_cid){ 1099 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1100 } 1101 1102 uint8_t avrcp_controller_pause(uint16_t avrcp_cid){ 1103 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1104 } 1105 1106 uint8_t avrcp_controller_forward(uint16_t avrcp_cid){ 1107 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1108 } 1109 1110 uint8_t avrcp_controller_backward(uint16_t avrcp_cid){ 1111 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1112 } 1113 1114 uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){ 1115 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1116 } 1117 1118 uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){ 1119 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1120 } 1121 1122 uint8_t avrcp_controller_mute(uint16_t avrcp_cid){ 1123 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1124 } 1125 1126 uint8_t avrcp_controller_skip(uint16_t avrcp_cid){ 1127 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0); 1128 } 1129 1130 uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){ 1131 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1132 } 1133 1134 uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){ 1135 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1136 } 1137 1138 1139 /* start cmds */ 1140 1141 uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){ 1142 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1143 if (!connection){ 1144 log_error("avrcp_stop_play: could not find a connection."); 1145 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1146 } 1147 if (connection->state != AVCTP_W4_STOP) return ERROR_CODE_COMMAND_DISALLOWED; 1148 return request_pass_through_release_control_cmd(connection); 1149 } 1150 1151 uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){ 1152 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1153 } 1154 uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){ 1155 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1156 } 1157 uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){ 1158 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1159 } 1160 uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){ 1161 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1162 } 1163 uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){ 1164 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1165 } 1166 uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){ 1167 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1168 } 1169 uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){ 1170 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1171 } 1172 uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){ 1173 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1174 } 1175 uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){ 1176 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1177 } 1178 uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){ 1179 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1180 } 1181 1182 1183 /* stop continuous cmds */ 1184 1185 uint8_t avrcp_controller_get_play_status(uint16_t avrcp_cid){ 1186 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1187 if (!connection){ 1188 log_error("avrcp_get_play_status: could not find a connection."); 1189 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1190 } 1191 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1192 connection->state = AVCTP_W2_SEND_COMMAND; 1193 connection->transaction_label++; 1194 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1195 connection->command_type = AVRCP_CTYPE_STATUS; 1196 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1197 connection->subunit_id = AVRCP_SUBUNIT_ID; 1198 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1199 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_PLAY_STATUS; 1200 connection->cmd_operands[4] = 0; // reserved(upper 6) | packet_type -> 0 1201 big_endian_store_16(connection->cmd_operands, 5, 0); // parameter length 1202 connection->cmd_operands_length = 7; 1203 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1204 return ERROR_CODE_SUCCESS; 1205 } 1206 1207 uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1208 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1209 if (!connection){ 1210 log_error("avrcp_get_play_status: could not find a connection."); 1211 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1212 } 1213 avrcp_register_notification(connection, event_id); 1214 return ERROR_CODE_SUCCESS; 1215 } 1216 1217 uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1218 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1219 if (!connection){ 1220 log_error("avrcp_get_play_status: could not find a connection."); 1221 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1222 } 1223 connection->notifications_to_deregister |= (1 << event_id); 1224 return ERROR_CODE_SUCCESS; 1225 } 1226 1227 uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){ 1228 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1229 if (!connection){ 1230 log_error("avrcp_get_capabilities: could not find a connection."); 1231 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1232 } 1233 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1234 connection->state = AVCTP_W2_SEND_COMMAND; 1235 1236 connection->transaction_label++; 1237 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1238 connection->command_type = AVRCP_CTYPE_CONTROL; 1239 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1240 connection->subunit_id = AVRCP_SUBUNIT_ID; 1241 int pos = 0; 1242 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1243 pos += 3; 1244 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ADDRESSED_PLAYER; // PDU ID 1245 connection->cmd_operands[pos++] = 0; 1246 1247 // Parameter Length 1248 big_endian_store_16(connection->cmd_operands, pos, 2); 1249 pos += 2; 1250 1251 big_endian_store_16(connection->cmd_operands, pos, addressed_player_id); 1252 pos += 2; 1253 1254 connection->cmd_operands_length = pos; 1255 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1256 return ERROR_CODE_SUCCESS; 1257 } 1258 1259 uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){ 1260 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1261 if (!connection){ 1262 log_error("avrcp_get_capabilities: could not find a connection."); 1263 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1264 } 1265 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1266 connection->state = AVCTP_W2_SEND_COMMAND; 1267 1268 connection->transaction_label++; 1269 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1270 connection->command_type = AVRCP_CTYPE_STATUS; 1271 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1272 connection->subunit_id = AVRCP_SUBUNIT_ID; 1273 int pos = 0; 1274 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1275 pos += 3; 1276 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; // PDU ID 1277 connection->cmd_operands[pos++] = 0; 1278 1279 // Parameter Length 1280 big_endian_store_16(connection->cmd_operands, pos, 9); 1281 pos += 2; 1282 1283 // write 8 bytes value 1284 memset(connection->cmd_operands + pos, 0, 8); // identifier: PLAYING 1285 pos += 8; 1286 1287 connection->cmd_operands[pos++] = 0; // attribute count, if 0 get all attributes 1288 // every attribute is 4 bytes long 1289 1290 connection->cmd_operands_length = pos; 1291 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1292 return ERROR_CODE_SUCCESS; 1293 } 1294 1295 uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){ 1296 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1297 if (!connection){ 1298 log_error("avrcp_get_capabilities: could not find a connection."); 1299 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1300 } 1301 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1302 connection->state = AVCTP_W2_SEND_COMMAND; 1303 1304 connection->transaction_label++; 1305 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1306 connection->command_type = AVRCP_CTYPE_CONTROL; 1307 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1308 connection->subunit_id = AVRCP_SUBUNIT_ID; 1309 int pos = 0; 1310 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1311 pos += 3; 1312 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME; // PDU ID 1313 connection->cmd_operands[pos++] = 0; 1314 1315 // Parameter Length 1316 big_endian_store_16(connection->cmd_operands, pos, 1); 1317 pos += 2; 1318 connection->cmd_operands[pos++] = volume; 1319 1320 connection->cmd_operands_length = pos; 1321 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1322 return ERROR_CODE_SUCCESS; 1323 } 1324 1325 uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){ 1326 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1327 if (!connection){ 1328 log_error("avrcp_get_capabilities: could not find a connection."); 1329 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1330 } 1331 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1332 connection->state = AVCTP_W2_SEND_COMMAND; 1333 1334 connection->transaction_label++; 1335 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1336 connection->command_type = AVRCP_CTYPE_STATUS; 1337 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1338 connection->subunit_id = AVRCP_SUBUNIT_ID; 1339 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1340 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID 1341 connection->cmd_operands[4] = 0; 1342 big_endian_store_16(connection->cmd_operands, 5, 5); // parameter length 1343 connection->cmd_operands[7] = 4; // NumPlayerApplicationSettingAttributeID 1344 // PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133 1345 connection->cmd_operands[8] = 0x01; // equalizer (1-OFF, 2-ON) 1346 connection->cmd_operands[9] = 0x02; // repeat (1-off, 2-single track, 3-all tracks, 4-group repeat) 1347 connection->cmd_operands[10] = 0x03; // shuffle (1-off, 2-all tracks, 3-group shuffle) 1348 connection->cmd_operands[11] = 0x04; // scan (1-off, 2-all tracks, 3-group scan) 1349 connection->cmd_operands_length = 12; 1350 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1351 return ERROR_CODE_SUCCESS; 1352 } 1353 1354 static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){ 1355 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1356 if (!connection){ 1357 log_error("avrcp_get_capabilities: could not find a connection."); 1358 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1359 } 1360 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1361 connection->state = AVCTP_W2_SEND_COMMAND; 1362 1363 connection->transaction_label++; 1364 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1365 connection->command_type = AVRCP_CTYPE_CONTROL; 1366 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1367 connection->subunit_id = AVRCP_SUBUNIT_ID; 1368 int pos = 0; 1369 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1370 pos += 3; 1371 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID 1372 connection->cmd_operands[pos++] = 0; 1373 // Parameter Length 1374 big_endian_store_16(connection->cmd_operands, pos, 3); 1375 pos += 2; 1376 connection->cmd_operands[pos++] = 2; 1377 connection->cmd_operands_length = pos; 1378 connection->cmd_operands[pos++] = attr_id; 1379 connection->cmd_operands[pos++] = attr_value; 1380 connection->cmd_operands_length = pos; 1381 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1382 return ERROR_CODE_SUCCESS; 1383 } 1384 1385 uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){ 1386 if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1387 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode); 1388 } 1389 1390 uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){ 1391 if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1392 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode); 1393 } 1394 1395 uint8_t avrcp_controller_play_item_for_scope(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){ 1396 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1397 if (!connection){ 1398 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1399 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1400 } 1401 if (connection->state != AVCTP_CONNECTION_OPENED){ 1402 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1403 return ERROR_CODE_COMMAND_DISALLOWED; 1404 } 1405 connection->state = AVCTP_W2_SEND_COMMAND; 1406 1407 connection->transaction_label++; 1408 connection->command_type = AVRCP_CTYPE_CONTROL; 1409 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1410 connection->subunit_id = AVRCP_SUBUNIT_ID; 1411 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1412 int pos = 0; 1413 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1414 pos += 3; 1415 connection->cmd_operands[pos++] = AVRCP_PDU_ID_PLAY_ITEM; // PDU ID 1416 // reserved 1417 connection->cmd_operands[pos++] = 0; 1418 // Parameter Length 1419 big_endian_store_16(connection->cmd_operands, pos, 11); 1420 pos += 2; 1421 connection->cmd_operands[pos++] = scope; 1422 memset(&connection->cmd_operands[pos], 0, 8); 1423 if (uid){ 1424 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1425 } 1426 pos += 8; 1427 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1428 pos += 2; 1429 connection->cmd_operands_length = pos; 1430 1431 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1432 return ERROR_CODE_SUCCESS; 1433 } 1434 1435 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){ 1436 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1437 if (!connection){ 1438 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1439 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1440 } 1441 if (connection->state != AVCTP_CONNECTION_OPENED){ 1442 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1443 return ERROR_CODE_COMMAND_DISALLOWED; 1444 } 1445 connection->state = AVCTP_W2_SEND_COMMAND; 1446 1447 connection->transaction_label++; 1448 connection->command_type = AVRCP_CTYPE_CONTROL; 1449 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1450 connection->subunit_id = AVRCP_SUBUNIT_ID; 1451 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1452 int pos = 0; 1453 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1454 pos += 3; 1455 connection->cmd_operands[pos++] = AVRCP_PDU_ID_ADD_TO_NOW_PLAYING; // PDU ID 1456 // reserved 1457 connection->cmd_operands[pos++] = 0; 1458 // Parameter Length 1459 big_endian_store_16(connection->cmd_operands, pos, 11); 1460 pos += 2; 1461 connection->cmd_operands[pos++] = scope; 1462 memset(&connection->cmd_operands[pos], 0, 8); 1463 if (uid){ 1464 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1465 } 1466 pos += 8; 1467 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1468 pos += 2; 1469 connection->cmd_operands_length = pos; 1470 1471 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1472 return ERROR_CODE_SUCCESS; 1473 } 1474 1475 uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){ 1476 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1477 if (!connection){ 1478 log_error("avrcp_controller_play_item: could not find a connection."); 1479 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1480 } 1481 connection->max_num_fragments = max_num_fragments; 1482 return ERROR_CODE_SUCCESS; 1483 } 1484 1485 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){ 1486 avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1487 if (!connection){ 1488 log_error("avrcp_controller_play_item: could not find a connection."); 1489 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1490 } 1491 1492 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1493 connection->state = AVCTP_W2_SEND_FRAGMENTED_COMMAND; 1494 1495 connection->transaction_label++; 1496 connection->command_opcode = command_opcode; 1497 connection->command_type = command_type; 1498 connection->subunit_type = subunit_type; 1499 connection->subunit_id = subunit_id; 1500 connection->cmd_operands_fragmented_buffer = command_buffer; 1501 connection->cmd_operands_fragmented_pos = 0; 1502 connection->cmd_operands_fragmented_len = command_len; 1503 1504 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1505 return ERROR_CODE_SUCCESS; 1506 } 1507