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 <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <inttypes.h> 45 46 #include "btstack.h" 47 #include "classic/avrcp.h" 48 #include "classic/avrcp_controller.h" 49 50 // made public in avrcp_controller.h 51 avrcp_context_t avrcp_controller_context; 52 53 static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){ 54 return controller_supported_features & (1 << AVRCP_CONTROLLER_SUPPORTED_FEATURE_BROWSING); 55 } 56 57 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){ 58 avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name); 59 } 60 61 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){ 62 btstack_assert(callback != NULL); 63 64 uint8_t event[8]; 65 int pos = 0; 66 event[pos++] = HCI_EVENT_AVRCP_META; 67 event[pos++] = sizeof(event) - 2; 68 event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE; 69 little_endian_store_16(event, pos, avrcp_cid); 70 pos += 2; 71 event[pos++] = ctype; 72 event[pos++] = repeat_mode; 73 event[pos++] = shuffle_mode; 74 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 75 } 76 77 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){ 78 btstack_assert(callback != NULL); 79 80 uint8_t event[7]; 81 int pos = 0; 82 event[pos++] = HCI_EVENT_AVRCP_META; 83 event[pos++] = sizeof(event) - 2; 84 event[pos++] = subevent; 85 little_endian_store_16(event, pos, avrcp_cid); 86 pos += 2; 87 event[pos++] = ctype; 88 event[pos++] = operation_id; 89 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 90 } 91 92 static void avrcp_press_and_hold_timeout_handler(btstack_timer_source_t * timer){ 93 UNUSED(timer); 94 avrcp_connection_t * connection = (avrcp_connection_t*) btstack_run_loop_get_timer_context(timer); 95 btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout 96 btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer); 97 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 98 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 99 } 100 101 static void avrcp_press_and_hold_timer_start(avrcp_connection_t * connection){ 102 btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer); 103 btstack_run_loop_set_timer_handler(&connection->press_and_hold_cmd_timer, avrcp_press_and_hold_timeout_handler); 104 btstack_run_loop_set_timer_context(&connection->press_and_hold_cmd_timer, connection); 105 btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout 106 btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer); 107 } 108 109 static void avrcp_press_and_hold_timer_stop(avrcp_connection_t * connection){ 110 connection->continuous_fast_forward_cmd = 0; 111 btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer); 112 } 113 114 static uint8_t request_pass_through_release_control_cmd(avrcp_connection_t * connection){ 115 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 116 if (connection->continuous_fast_forward_cmd){ 117 avrcp_press_and_hold_timer_stop(connection); 118 } 119 connection->cmd_operands[0] = 0x80 | connection->cmd_operands[0]; 120 connection->transaction_label++; 121 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 122 return ERROR_CODE_SUCCESS; 123 } 124 125 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){ 126 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 127 if (!connection){ 128 log_error("avrcp: could not find a connection. avrcp cid 0x%02x", avrcp_cid); 129 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 130 } 131 132 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 133 connection->state = AVCTP_W2_SEND_PRESS_COMMAND; 134 connection->command_opcode = AVRCP_CMD_OPCODE_PASS_THROUGH; 135 connection->command_type = AVRCP_CTYPE_CONTROL; 136 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 137 connection->subunit_id = AVRCP_SUBUNIT_ID; 138 connection->cmd_operands_length = 0; 139 140 connection->continuous_fast_forward_cmd = continuous_fast_forward_cmd; 141 connection->cmd_operands_length = 2; 142 connection->cmd_operands[0] = opid; 143 if (playback_speed > 0){ 144 connection->cmd_operands[2] = playback_speed; 145 connection->cmd_operands_length++; 146 } 147 connection->cmd_operands[1] = connection->cmd_operands_length - 2; 148 149 if (connection->continuous_fast_forward_cmd){ 150 avrcp_press_and_hold_timer_start(connection); 151 } 152 153 connection->transaction_label++; 154 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 155 return ERROR_CODE_SUCCESS; 156 } 157 158 static uint8_t request_single_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 159 return request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, 0); 160 } 161 162 static uint8_t request_continuous_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){ 163 return request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, 1); 164 } 165 166 #define AVRCP_CMD_BUFFER_SIZE 30 167 static uint16_t avrcp_get_max_payload_size_for_packet_type(avrcp_packet_type_t packet_type){ 168 switch (packet_type){ 169 case AVRCP_SINGLE_PACKET: 170 return AVRCP_CMD_BUFFER_SIZE - 3; 171 case AVRCP_START_PACKET: 172 return AVRCP_CMD_BUFFER_SIZE - 4; 173 case AVRCP_CONTINUE_PACKET: 174 case AVRCP_END_PACKET: 175 return AVRCP_CMD_BUFFER_SIZE - 1; 176 } 177 return 0; 178 } 179 180 static int avrcp_send_cmd(avrcp_connection_t * connection, avrcp_packet_type_t packet_type){ 181 uint8_t command[AVRCP_CMD_BUFFER_SIZE]; 182 int pos = 0; 183 uint16_t max_bytes = sizeof(command) - 1; 184 185 // transport header 186 // Transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier) 187 command[pos++] = (connection->transaction_label << 4) | (packet_type << 2) | (AVRCP_COMMAND_FRAME << 1) | 0; 188 189 if (packet_type == AVRCP_START_PACKET){ 190 // num packets: (3 bytes overhead (PID, num packets) + command) / (MTU - transport header) 191 command[pos++] = ((connection->cmd_operands_fragmented_len + 3 - 1) / (AVRCP_CMD_BUFFER_SIZE - 1)) + 1; 192 max_bytes -= 3; 193 } 194 195 if ((packet_type == AVRCP_SINGLE_PACKET) || (packet_type == AVRCP_START_PACKET)){ 196 // Profile IDentifier (PID) 197 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8; 198 command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF; 199 200 // command_type 201 command[pos++] = connection->command_type; 202 // subunit_type | subunit ID 203 command[pos++] = (connection->subunit_type << 3) | connection->subunit_id; 204 // opcode 205 command[pos++] = (uint8_t)connection->command_opcode; 206 } 207 208 if (packet_type == AVRCP_SINGLE_PACKET){ 209 // operands 210 (void)memcpy(command + pos, connection->cmd_operands, 211 connection->cmd_operands_length); 212 pos += connection->cmd_operands_length; 213 } else { 214 uint16_t bytes_to_copy = btstack_min(connection->cmd_operands_fragmented_len-connection->cmd_operands_fragmented_pos, max_bytes); 215 (void)memcpy(command + pos, 216 &connection->cmd_operands_fragmented_buffer[connection->cmd_operands_fragmented_pos], 217 bytes_to_copy); 218 pos += bytes_to_copy; 219 connection->cmd_operands_fragmented_pos += bytes_to_copy; 220 } 221 222 return l2cap_send(connection->l2cap_signaling_cid, command, pos); 223 } 224 225 static int avrcp_register_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){ 226 if (connection->notifications_to_deregister & (1 << event_id)) return 0; 227 if (connection->notifications_enabled & (1 << event_id)) return 0; 228 if (connection->notifications_to_register & (1 << event_id)) return 0; 229 connection->notifications_to_register |= (1 << event_id); 230 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 231 return 1; 232 } 233 234 static void avrcp_prepare_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){ 235 connection->transaction_label++; 236 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 237 connection->command_type = AVRCP_CTYPE_NOTIFY; 238 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 239 connection->subunit_id = AVRCP_SUBUNIT_ID; 240 int pos = 0; 241 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 242 pos += 3; 243 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REGISTER_NOTIFICATION; 244 connection->cmd_operands[pos++] = 0; // reserved(upper 6) | packet_type -> 0 245 big_endian_store_16(connection->cmd_operands, pos, 5); // parameter length 246 pos += 2; 247 connection->cmd_operands[pos++] = event_id; 248 big_endian_store_32(connection->cmd_operands, pos, 1); // send notification on playback position every second, for other notifications it is ignored 249 pos += 4; 250 connection->cmd_operands_length = pos; 251 // AVRCP_SPEC_V14.pdf 166 252 // answer page 61 253 } 254 255 256 static void avrcp_parser_reset(avrcp_connection_t * connection){ 257 connection->list_offset = 0; 258 connection->num_attributes = 0; 259 connection->num_parsed_attributes = 0; 260 connection->parser_attribute_header_pos = 0; 261 connection->num_received_fragments = 0; 262 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 263 } 264 265 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){ 266 uint8_t event[7]; 267 int pos = 0; 268 event[pos++] = HCI_EVENT_AVRCP_META; 269 event[pos++] = sizeof(event) - 2; 270 event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE; 271 little_endian_store_16(event, pos, avrcp_cid); 272 pos += 2; 273 event[pos++] = ctype; 274 event[pos++] = status; 275 // printf_hexdump(event, pos); 276 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 277 } 278 279 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){ 280 uint8_t event[HCI_EVENT_BUFFER_SIZE]; 281 int pos = 0; 282 event[pos++] = HCI_EVENT_AVRCP_META; 283 // reserve one byte for subevent type and data len 284 int data_len_pos = pos; 285 pos++; 286 int subevent_type_pos = pos; 287 pos++; 288 little_endian_store_16(event, pos, avrcp_cid); 289 pos += 2; 290 event[pos++] = ctype; 291 292 switch (attr_id){ 293 case AVRCP_MEDIA_ATTR_TITLE: 294 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO; 295 event[pos++] = value_len; 296 (void)memcpy(event + pos, value, value_len); 297 break; 298 case AVRCP_MEDIA_ATTR_ARTIST: 299 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO; 300 event[pos++] = value_len; 301 (void)memcpy(event + pos, value, value_len); 302 break; 303 case AVRCP_MEDIA_ATTR_ALBUM: 304 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO; 305 event[pos++] = value_len; 306 (void)memcpy(event + pos, value, value_len); 307 break; 308 case AVRCP_MEDIA_ATTR_GENRE: 309 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO; 310 event[pos++] = value_len; 311 (void)memcpy(event + pos, value, value_len); 312 break; 313 case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS: 314 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO; 315 if (value){ 316 little_endian_store_32(event, pos, btstack_atoi((char *)value)); 317 } else { 318 little_endian_store_32(event, pos, 0); 319 } 320 pos += 4; 321 break; 322 case AVRCP_MEDIA_ATTR_TRACK: 323 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO; 324 if (value){ 325 event[pos++] = btstack_atoi((char *)value); 326 } else { 327 event[pos++] = 0; 328 } 329 break; 330 case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS: 331 event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO; 332 if (value){ 333 event[pos++] = btstack_atoi((char *)value); 334 } else { 335 event[pos++] = 0; 336 } 337 break; 338 default: 339 break; 340 } 341 event[data_len_pos] = pos - 2; 342 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 343 } 344 345 static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){ 346 uint16_t attribute_total_value_len; 347 uint32_t attribute_id; 348 // printf("avrcp_parser_process_byte: %02x, state %02x\n", byte, connection->parser_state); 349 switch(connection->parser_state){ 350 case AVRCP_PARSER_GET_ATTRIBUTE_HEADER: 351 connection->parser_attribute_header[connection->parser_attribute_header_pos++] = byte; 352 connection->list_offset++; 353 354 if (connection->parser_attribute_header_pos < AVRCP_ATTRIBUTE_HEADER_LEN) return; 355 356 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 357 connection->attribute_value_len = btstack_min(attribute_total_value_len, AVRCP_MAX_ATTRIBUTTE_SIZE); 358 if (connection->attribute_value_len > 0){ 359 // get ready for attribute value 360 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_VALUE; 361 return; 362 } 363 364 // emit empty attribute 365 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 366 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); 367 368 // done, see below 369 break; 370 371 case AVRCP_PARSER_GET_ATTRIBUTE_VALUE: 372 connection->attribute_value[connection->attribute_value_offset++] = byte; 373 connection->list_offset++; 374 375 if (connection->attribute_value_offset < connection->attribute_value_len) return; 376 377 // emit (potentially partial) attribute 378 attribute_id = big_endian_read_32(connection->parser_attribute_header, 0); 379 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); 380 381 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 382 if (connection->attribute_value_offset < attribute_total_value_len){ 383 // ignore rest of attribute 384 connection->parser_state = AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE; 385 return; 386 } 387 388 // done, see below 389 break; 390 391 case AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE: 392 connection->attribute_value_offset++; 393 connection->list_offset++; 394 395 attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6); 396 if (connection->attribute_value_offset < attribute_total_value_len) return; 397 398 // done, see below 399 break; 400 401 default: 402 return; 403 } 404 405 // attribute fully read, check if more to come 406 if (connection->list_offset < connection->list_size){ 407 // more to come, reset parser 408 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER; 409 connection->parser_attribute_header_pos = 0; 410 connection->attribute_value_offset = 0; 411 } else { 412 // fully done 413 avrcp_parser_reset(connection); 414 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 0); 415 } 416 } 417 418 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){ 419 int i; 420 for (i=0;i<num_bytes_to_read;i++){ 421 avrcp_parser_process_byte(packet[i], connection, ctype); 422 } 423 } 424 425 static uint8_t avrcp_controller_request_abort_continuation(avrcp_connection_t * connection){ 426 connection->state = AVCTP_W2_SEND_COMMAND; 427 connection->transaction_label++; 428 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 429 connection->command_type = AVRCP_CTYPE_CONTROL; 430 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 431 connection->subunit_id = AVRCP_SUBUNIT_ID; 432 int pos = 0; 433 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 434 pos += 3; 435 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE; // PDU ID 436 connection->cmd_operands[pos++] = 0; 437 // Parameter Length 438 connection->cmd_operands_length = 8; 439 big_endian_store_16(connection->cmd_operands, pos, 1); 440 pos += 2; 441 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; 442 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 443 return ERROR_CODE_SUCCESS; 444 } 445 446 447 static uint8_t avrcp_controller_request_continue_response(avrcp_connection_t * connection){ 448 connection->state = AVCTP_W2_SEND_COMMAND; 449 connection->transaction_label++; 450 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 451 connection->command_type = AVRCP_CTYPE_CONTROL; 452 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 453 connection->subunit_id = AVRCP_SUBUNIT_ID; 454 int pos = 0; 455 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 456 pos += 3; 457 connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE; // PDU ID 458 connection->cmd_operands[pos++] = 0; 459 // Parameter Length 460 connection->cmd_operands_length = 8; 461 big_endian_store_16(connection->cmd_operands, pos, 1); 462 pos += 2; 463 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; 464 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 465 return ERROR_CODE_SUCCESS; 466 } 467 468 static void avrcp_handle_l2cap_data_packet_for_signaling_connection(avrcp_connection_t * connection, uint8_t *packet, uint16_t size){ 469 uint8_t operands[20]; 470 uint8_t opcode; 471 int pos = 3; 472 473 avrcp_command_type_t ctype = (avrcp_command_type_t) packet[pos++]; 474 uint8_t byte_value = packet[pos++]; 475 avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3); 476 avrcp_subunit_type_t subunit_id = (avrcp_subunit_type_t) (byte_value & 0x07); 477 opcode = packet[pos++]; 478 479 uint8_t pdu_id; 480 uint16_t param_length; 481 switch (avrcp_cmd_opcode(packet,size)){ 482 case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{ 483 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 484 connection->state = AVCTP_CONNECTION_OPENED; 485 // operands: 486 (void)memcpy(operands, packet + pos, 5); 487 uint8_t unit_type = operands[1] >> 3; 488 uint8_t max_subunit_ID = operands[1] & 0x07; 489 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); 490 break; 491 } 492 case AVRCP_CMD_OPCODE_UNIT_INFO:{ 493 if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return; 494 connection->state = AVCTP_CONNECTION_OPENED; 495 // operands: 496 (void)memcpy(operands, packet + pos, 5); 497 uint8_t unit_type = operands[1] >> 3; 498 uint8_t unit = operands[1] & 0x07; 499 uint32_t company_id = (operands[2] << 16) | (operands[3] << 8) | operands[4]; 500 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, 501 ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id); 502 break; 503 } 504 case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT: 505 if ((size - pos) < 7) { 506 log_error("avrcp: wrong packet size"); 507 return; 508 }; 509 // operands: 510 (void)memcpy(operands, packet + pos, 7); 511 pos += 7; 512 pdu_id = operands[3]; 513 514 if ((connection->state != AVCTP_W2_RECEIVE_RESPONSE) && (pdu_id != AVRCP_PDU_ID_REGISTER_NOTIFICATION)){ 515 log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state); 516 return; 517 } 518 connection->state = AVCTP_CONNECTION_OPENED; 519 520 param_length = big_endian_read_16(operands, 5); 521 522 log_info(" VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype)); 523 switch (pdu_id){ 524 case AVRCP_PDU_ID_GetCurrentPlayerApplicationSettingValue:{ 525 uint8_t num_attributes = packet[pos++]; 526 int i; 527 avrcp_repeat_mode_t repeat_mode = AVRCP_REPEAT_MODE_INVALID; 528 avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID; 529 for (i = 0; i < num_attributes; i++){ 530 uint8_t attribute_id = packet[pos++]; 531 uint8_t value = packet[pos++]; 532 switch (attribute_id){ 533 case 0x02: 534 repeat_mode = (avrcp_repeat_mode_t) value; 535 break; 536 case 0x03: 537 shuffle_mode = (avrcp_shuffle_mode_t) value; 538 break; 539 default: 540 break; 541 } 542 } 543 avrcp_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode); 544 break; 545 } 546 case AVRCP_PDU_ID_SetPlayerApplicationSettingValue:{ 547 uint8_t event[6]; 548 int offset = 0; 549 event[offset++] = HCI_EVENT_AVRCP_META; 550 event[offset++] = sizeof(event) - 2; 551 event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE; 552 little_endian_store_16(event, offset, connection->avrcp_cid); 553 offset += 2; 554 event[offset++] = ctype; 555 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 556 break; 557 } 558 case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{ 559 uint8_t event[7]; 560 int offset = 0; 561 event[offset++] = HCI_EVENT_AVRCP_META; 562 event[offset++] = sizeof(event) - 2; 563 event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE; 564 little_endian_store_16(event, offset, connection->avrcp_cid); 565 offset += 2; 566 event[offset++] = ctype; 567 event[offset++] = packet[pos++]; 568 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 569 break; 570 } 571 case AVRCP_PDU_ID_GET_CAPABILITIES:{ 572 avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++]; 573 uint8_t capability_count = packet[pos++]; 574 int i; 575 576 switch (capability_id){ 577 int offset = 0; 578 uint8_t event[10]; 579 580 case AVRCP_CAPABILITY_ID_COMPANY: 581 for (i = 0; i < capability_count; i++){ 582 uint32_t company_id = big_endian_read_24(packet, pos); 583 pos += 3; 584 log_info(" 0x%06" PRIx32 ", ", company_id); 585 586 offset = 0; 587 event[offset++] = HCI_EVENT_AVRCP_META; 588 event[offset++] = sizeof(event) - 2; 589 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID; 590 little_endian_store_16(event, offset, connection->avrcp_cid); 591 offset += 2; 592 event[offset++] = ctype; 593 event[offset++] = 0; 594 little_endian_store_24(event, offset, company_id); 595 offset += 3; 596 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 597 break; 598 } 599 600 offset = 0; 601 event[offset++] = HCI_EVENT_AVRCP_META; 602 event[offset++] = sizeof(event) - 2; 603 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE; 604 little_endian_store_16(event, offset, connection->avrcp_cid); 605 offset += 2; 606 event[offset++] = ctype; 607 event[offset++] = 0; 608 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 609 break; 610 611 case AVRCP_CAPABILITY_ID_EVENT: 612 for (i = 0; i < capability_count; i++){ 613 uint8_t event_id = packet[pos++]; 614 log_info(" 0x%02x %s", event_id, avrcp_event2str(event_id)); 615 616 offset = 0; 617 event[offset++] = HCI_EVENT_AVRCP_META; 618 event[offset++] = sizeof(event) - 2; 619 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID; 620 little_endian_store_16(event, offset, connection->avrcp_cid); 621 offset += 2; 622 event[offset++] = ctype; 623 event[offset++] = 0; 624 event[offset++] = event_id; 625 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset); 626 } 627 628 offset = 0; 629 event[offset++] = HCI_EVENT_AVRCP_META; 630 event[offset++] = sizeof(event) - 2; 631 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE; 632 little_endian_store_16(event, offset, connection->avrcp_cid); 633 offset += 2; 634 event[offset++] = ctype; 635 event[offset++] = 0; 636 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 637 break; 638 } 639 break; 640 } 641 case AVRCP_PDU_ID_GET_PLAY_STATUS:{ 642 uint32_t song_length = big_endian_read_32(packet, pos); 643 pos += 4; 644 uint32_t song_position = big_endian_read_32(packet, pos); 645 pos += 4; 646 uint8_t play_status = packet[pos]; 647 648 uint8_t event[15]; 649 int offset = 0; 650 event[offset++] = HCI_EVENT_AVRCP_META; 651 event[offset++] = sizeof(event) - 2; 652 event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS; 653 little_endian_store_16(event, offset, connection->avrcp_cid); 654 offset += 2; 655 event[offset++] = ctype; 656 little_endian_store_32(event, offset, song_length); 657 offset += 4; 658 little_endian_store_32(event, offset, song_position); 659 offset += 4; 660 event[offset++] = play_status; 661 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 662 break; 663 } 664 case AVRCP_PDU_ID_REGISTER_NOTIFICATION:{ 665 avrcp_notification_event_id_t event_id = (avrcp_notification_event_id_t) packet[pos++]; 666 uint16_t event_mask = (1 << event_id); 667 uint16_t reset_event_mask = ~event_mask; 668 switch (ctype){ 669 case AVRCP_CTYPE_RESPONSE_INTERIM: 670 // register as enabled 671 connection->notifications_enabled |= event_mask; 672 break; 673 case AVRCP_CTYPE_RESPONSE_CHANGED_STABLE: 674 // received change, event is considered deregistered 675 // we are re-enabling it automatically, if it is not 676 // explicitly disabled 677 connection->notifications_enabled &= reset_event_mask; 678 if (! (connection->notifications_to_deregister & event_mask)){ 679 avrcp_register_notification(connection, event_id); 680 } else { 681 connection->notifications_to_deregister &= reset_event_mask; 682 } 683 break; 684 default: 685 connection->notifications_to_register &= reset_event_mask; 686 connection->notifications_enabled &= reset_event_mask; 687 connection->notifications_to_deregister &= reset_event_mask; 688 break; 689 } 690 691 switch (event_id){ 692 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{ 693 uint32_t song_position = big_endian_read_32(packet, pos); 694 uint8_t event[10]; 695 int offset = 0; 696 event[offset++] = HCI_EVENT_AVRCP_META; 697 event[offset++] = sizeof(event) - 2; 698 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED; 699 little_endian_store_16(event, offset, connection->avrcp_cid); 700 offset += 2; 701 event[offset++] = ctype; 702 little_endian_store_32(event, offset, song_position); 703 offset += 4; 704 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 705 break; 706 } 707 case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{ 708 uint8_t event[7]; 709 int offset = 0; 710 event[offset++] = HCI_EVENT_AVRCP_META; 711 event[offset++] = sizeof(event) - 2; 712 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED; 713 little_endian_store_16(event, offset, connection->avrcp_cid); 714 offset += 2; 715 event[offset++] = ctype; 716 event[offset++] = packet[pos]; 717 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 718 break; 719 } 720 case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{ 721 uint8_t event[6]; 722 int offset = 0; 723 event[offset++] = HCI_EVENT_AVRCP_META; 724 event[offset++] = sizeof(event) - 2; 725 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED; 726 little_endian_store_16(event, offset, connection->avrcp_cid); 727 offset += 2; 728 event[offset++] = ctype; 729 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 730 break; 731 } 732 case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{ 733 uint8_t event[6]; 734 int offset = 0; 735 event[offset++] = HCI_EVENT_AVRCP_META; 736 event[offset++] = sizeof(event) - 2; 737 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED; 738 little_endian_store_16(event, offset, connection->avrcp_cid); 739 offset += 2; 740 event[offset++] = ctype; 741 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 742 break; 743 } 744 case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{ 745 uint8_t event[6]; 746 int offset = 0; 747 event[offset++] = HCI_EVENT_AVRCP_META; 748 event[offset++] = sizeof(event) - 2; 749 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED; 750 little_endian_store_16(event, offset, connection->avrcp_cid); 751 offset += 2; 752 event[offset++] = ctype; 753 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 754 break; 755 } 756 case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{ 757 uint8_t event[7]; 758 int offset = 0; 759 event[offset++] = HCI_EVENT_AVRCP_META; 760 event[offset++] = sizeof(event) - 2; 761 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED; 762 little_endian_store_16(event, offset, connection->avrcp_cid); 763 offset += 2; 764 event[offset++] = ctype; 765 event[offset++] = packet[pos++] & 0x7F; 766 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 767 break; 768 } 769 case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{ 770 uint8_t event[8]; 771 uint16_t uuid = big_endian_read_16(packet, pos); 772 int offset = 0; 773 event[offset++] = HCI_EVENT_AVRCP_META; 774 event[offset++] = sizeof(event) - 2; 775 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED; 776 little_endian_store_16(event, offset, connection->avrcp_cid); 777 offset += 2; 778 event[offset++] = ctype; 779 little_endian_store_16(event, offset, uuid); 780 offset += 2; 781 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 782 break; 783 } 784 785 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{ 786 uint8_t event[6]; 787 int offset = 0; 788 event[offset++] = HCI_EVENT_AVRCP_META; 789 event[offset++] = sizeof(event) - 2; 790 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END; 791 little_endian_store_16(event, offset, connection->avrcp_cid); 792 offset += 2; 793 event[offset++] = ctype; 794 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 795 break; 796 } 797 case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{ 798 uint8_t event[6]; 799 int offset = 0; 800 event[offset++] = HCI_EVENT_AVRCP_META; 801 event[offset++] = sizeof(event) - 2; 802 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START; 803 little_endian_store_16(event, offset, connection->avrcp_cid); 804 offset += 2; 805 event[offset++] = ctype; 806 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 807 break; 808 } 809 case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{ 810 uint8_t event[7]; 811 int offset = 0; 812 event[offset++] = HCI_EVENT_AVRCP_META; 813 event[offset++] = sizeof(event) - 2; 814 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED; 815 little_endian_store_16(event, offset, connection->avrcp_cid); 816 offset += 2; 817 event[offset++] = ctype; 818 event[offset++] = packet[pos++]; 819 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 820 break; 821 } 822 823 case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{ 824 uint8_t event[7]; 825 int offset = 0; 826 event[offset++] = HCI_EVENT_AVRCP_META; 827 event[offset++] = sizeof(event) - 2; 828 event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED; 829 little_endian_store_16(event, offset, connection->avrcp_cid); 830 offset += 2; 831 event[offset++] = ctype; 832 event[offset++] = packet[pos]; 833 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 834 break; 835 } 836 837 case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED: 838 default: 839 log_info("avrcp: not implemented"); 840 break; 841 } 842 if (connection->notifications_to_register != 0){ 843 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 844 } 845 break; 846 } 847 848 case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{ 849 avrcp_packet_type_t packet_type = (avrcp_packet_type_t) (operands[4] & 0x03); 850 switch (packet_type){ 851 case AVRCP_START_PACKET: 852 case AVRCP_SINGLE_PACKET: 853 avrcp_parser_reset(connection); 854 connection->list_size = param_length; 855 connection->num_attributes = packet[pos++]; 856 857 avrcp_source_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 858 859 if (packet_type == AVRCP_START_PACKET){ 860 avrcp_controller_request_continue_response(connection); 861 } 862 break; 863 case AVRCP_CONTINUE_PACKET: 864 case AVRCP_END_PACKET: 865 connection->num_received_fragments++; 866 if (connection->num_received_fragments < connection->max_num_fragments){ 867 avrcp_source_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype); 868 if (packet_type == AVRCP_CONTINUE_PACKET){ 869 avrcp_controller_request_continue_response(connection); 870 } 871 } else { 872 avrcp_controller_request_abort_continuation(connection); 873 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1); 874 avrcp_parser_reset(connection); 875 } 876 break; 877 } 878 } 879 default: 880 break; 881 } 882 break; 883 case AVRCP_CMD_OPCODE_PASS_THROUGH:{ 884 // 0x80 | connection->cmd_operands[0] 885 uint8_t operation_id = packet[pos++]; 886 switch (connection->state){ 887 case AVCTP_W2_RECEIVE_PRESS_RESPONSE: 888 if (connection->continuous_fast_forward_cmd){ 889 connection->state = AVCTP_W4_STOP; 890 } else { 891 connection->state = AVCTP_W2_SEND_RELEASE_COMMAND; 892 } 893 break; 894 case AVCTP_W2_RECEIVE_RESPONSE: 895 connection->state = AVCTP_CONNECTION_OPENED; 896 break; 897 default: 898 break; 899 } 900 if (connection->state == AVCTP_W4_STOP){ 901 avrcp_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id); 902 } 903 if (connection->state == AVCTP_CONNECTION_OPENED) { 904 // RELEASE response 905 operation_id = operation_id & 0x7F; 906 avrcp_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id); 907 } 908 if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){ 909 // PRESS response 910 request_pass_through_release_control_cmd(connection); 911 } 912 break; 913 } 914 default: 915 break; 916 } 917 918 // trigger pending notification reqistrations 919 if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->notifications_to_register){ 920 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 921 } 922 } 923 924 static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){ 925 int i; 926 switch (connection->state){ 927 case AVCTP_W2_SEND_PRESS_COMMAND: 928 connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE; 929 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 930 break; 931 case AVCTP_W2_SEND_COMMAND: 932 case AVCTP_W2_SEND_RELEASE_COMMAND: 933 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 934 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 935 break; 936 case AVCTP_CONNECTION_OPENED: 937 if (connection->notifications_to_register != 0){ 938 for (i = 1; i <= AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED; i++){ 939 if (connection->notifications_to_register & (1<<i)){ 940 connection->notifications_to_register &= ~ (1 << i); 941 avrcp_prepare_notification(connection, (avrcp_notification_event_id_t) i); 942 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 943 avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET); 944 return; 945 } 946 } 947 } 948 return; 949 case AVCTP_W2_SEND_FRAGMENTED_COMMAND: 950 if (connection->cmd_operands_fragmented_pos == 0){ 951 avrcp_send_cmd(connection, AVRCP_START_PACKET); 952 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 953 } else { 954 if ((connection->cmd_operands_fragmented_len - connection->cmd_operands_fragmented_pos) > avrcp_get_max_payload_size_for_packet_type(AVRCP_CONTINUE_PACKET)){ 955 avrcp_send_cmd(connection, AVRCP_CONTINUE_PACKET); 956 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 957 } else { 958 connection->state = AVCTP_W2_RECEIVE_RESPONSE; 959 avrcp_send_cmd(connection, AVRCP_END_PACKET); 960 } 961 } 962 default: 963 return; 964 } 965 } 966 967 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 968 avrcp_connection_t * connection; 969 970 switch (packet_type) { 971 case L2CAP_DATA_PACKET: 972 connection = get_avrcp_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 973 avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size); 974 break; 975 976 case HCI_EVENT_PACKET: 977 switch (hci_event_packet_get_type(packet)){ 978 case L2CAP_EVENT_CAN_SEND_NOW: 979 connection = get_avrcp_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel); 980 avrcp_controller_handle_can_send_now(connection); 981 break; 982 default: 983 break; 984 } 985 default: 986 break; 987 } 988 } 989 990 void avrcp_controller_init(void){ 991 avrcp_controller_context.role = AVRCP_CONTROLLER; 992 avrcp_controller_context.packet_handler = avrcp_controller_packet_handler; 993 avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler); 994 } 995 996 void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){ 997 btstack_assert(callback != NULL); 998 avrcp_controller_context.avrcp_callback = callback; 999 } 1000 1001 uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){ 1002 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1003 if (!connection){ 1004 log_error("avrcp_unit_info: could not find a connection."); 1005 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1006 } 1007 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1008 connection->state = AVCTP_W2_SEND_COMMAND; 1009 1010 connection->transaction_label++; 1011 connection->command_opcode = AVRCP_CMD_OPCODE_UNIT_INFO; 1012 connection->command_type = AVRCP_CTYPE_STATUS; 1013 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1014 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1015 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1016 connection->cmd_operands_length = 5; 1017 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1018 return ERROR_CODE_SUCCESS; 1019 } 1020 1021 uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){ 1022 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1023 if (!connection){ 1024 log_error("avrcp_unit_info: could not find a connection."); 1025 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1026 } 1027 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1028 connection->state = AVCTP_W2_SEND_COMMAND; 1029 1030 connection->transaction_label++; 1031 connection->command_opcode = AVRCP_CMD_OPCODE_SUBUNIT_INFO; 1032 connection->command_type = AVRCP_CTYPE_STATUS; 1033 connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique 1034 connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE; 1035 memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length); 1036 connection->cmd_operands[0] = 7; // page: 0, extention_code: 7 1037 connection->cmd_operands_length = 5; 1038 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1039 return ERROR_CODE_SUCCESS; 1040 } 1041 1042 static uint8_t avrcp_controller_get_capabilities(uint16_t avrcp_cid, uint8_t capability_id){ 1043 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1044 if (!connection){ 1045 log_error("avrcp_get_capabilities: could not find a connection."); 1046 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1047 } 1048 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1049 connection->state = AVCTP_W2_SEND_COMMAND; 1050 1051 connection->transaction_label++; 1052 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1053 connection->command_type = AVRCP_CTYPE_STATUS; 1054 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1055 connection->subunit_id = AVRCP_SUBUNIT_ID; 1056 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1057 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CAPABILITIES; // PDU ID 1058 connection->cmd_operands[4] = 0; 1059 big_endian_store_16(connection->cmd_operands, 5, 1); // parameter length 1060 connection->cmd_operands[7] = capability_id; // capability ID 1061 connection->cmd_operands_length = 8; 1062 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1063 return ERROR_CODE_SUCCESS; 1064 } 1065 1066 uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){ 1067 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_COMPANY); 1068 } 1069 1070 uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){ 1071 return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_EVENT); 1072 } 1073 1074 1075 uint8_t avrcp_controller_play(uint16_t avrcp_cid){ 1076 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1077 } 1078 1079 uint8_t avrcp_controller_stop(uint16_t avrcp_cid){ 1080 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1081 } 1082 1083 uint8_t avrcp_controller_pause(uint16_t avrcp_cid){ 1084 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1085 } 1086 1087 uint8_t avrcp_controller_forward(uint16_t avrcp_cid){ 1088 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1089 } 1090 1091 uint8_t avrcp_controller_backward(uint16_t avrcp_cid){ 1092 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1093 } 1094 1095 uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){ 1096 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1097 } 1098 1099 uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){ 1100 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1101 } 1102 1103 uint8_t avrcp_controller_mute(uint16_t avrcp_cid){ 1104 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1105 } 1106 1107 uint8_t avrcp_controller_skip(uint16_t avrcp_cid){ 1108 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0); 1109 } 1110 1111 uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){ 1112 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1113 } 1114 1115 uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){ 1116 return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1117 } 1118 1119 1120 /* start cmds */ 1121 1122 uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){ 1123 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1124 if (!connection){ 1125 log_error("avrcp_stop_play: could not find a connection."); 1126 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1127 } 1128 if (connection->state != AVCTP_W4_STOP) return ERROR_CODE_COMMAND_DISALLOWED; 1129 return request_pass_through_release_control_cmd(connection); 1130 } 1131 1132 uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){ 1133 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0); 1134 } 1135 uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){ 1136 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0); 1137 } 1138 uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){ 1139 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0); 1140 } 1141 uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){ 1142 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0); 1143 } 1144 uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){ 1145 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0); 1146 } 1147 uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){ 1148 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0); 1149 } 1150 uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){ 1151 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0); 1152 } 1153 uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){ 1154 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0); 1155 } 1156 uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){ 1157 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0); 1158 } 1159 uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){ 1160 return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0); 1161 } 1162 1163 1164 /* stop continuous cmds */ 1165 1166 uint8_t avrcp_controller_get_play_status(uint16_t avrcp_cid){ 1167 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1168 if (!connection){ 1169 log_error("avrcp_get_play_status: could not find a connection."); 1170 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1171 } 1172 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1173 connection->state = AVCTP_W2_SEND_COMMAND; 1174 connection->transaction_label++; 1175 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1176 connection->command_type = AVRCP_CTYPE_STATUS; 1177 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1178 connection->subunit_id = AVRCP_SUBUNIT_ID; 1179 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1180 connection->cmd_operands[3] = AVRCP_PDU_ID_GET_PLAY_STATUS; 1181 connection->cmd_operands[4] = 0; // reserved(upper 6) | packet_type -> 0 1182 big_endian_store_16(connection->cmd_operands, 5, 0); // parameter length 1183 connection->cmd_operands_length = 7; 1184 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1185 return ERROR_CODE_SUCCESS; 1186 } 1187 1188 uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1189 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1190 if (!connection){ 1191 log_error("avrcp_get_play_status: could not find a connection."); 1192 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1193 } 1194 avrcp_register_notification(connection, event_id); 1195 return ERROR_CODE_SUCCESS; 1196 } 1197 1198 uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){ 1199 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1200 if (!connection){ 1201 log_error("avrcp_get_play_status: could not find a connection."); 1202 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1203 } 1204 connection->notifications_to_deregister |= (1 << event_id); 1205 return ERROR_CODE_SUCCESS; 1206 } 1207 1208 uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){ 1209 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1210 if (!connection){ 1211 log_error("avrcp_get_capabilities: could not find a connection."); 1212 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1213 } 1214 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1215 connection->state = AVCTP_W2_SEND_COMMAND; 1216 1217 connection->transaction_label++; 1218 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1219 connection->command_type = AVRCP_CTYPE_CONTROL; 1220 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1221 connection->subunit_id = AVRCP_SUBUNIT_ID; 1222 int pos = 0; 1223 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1224 pos += 3; 1225 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ADDRESSED_PLAYER; // PDU ID 1226 connection->cmd_operands[pos++] = 0; 1227 1228 // Parameter Length 1229 big_endian_store_16(connection->cmd_operands, pos, 2); 1230 pos += 2; 1231 1232 big_endian_store_16(connection->cmd_operands, pos, addressed_player_id); 1233 pos += 2; 1234 1235 connection->cmd_operands_length = pos; 1236 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1237 return ERROR_CODE_SUCCESS; 1238 } 1239 1240 uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){ 1241 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1242 if (!connection){ 1243 log_error("avrcp_get_capabilities: could not find a connection."); 1244 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1245 } 1246 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1247 connection->state = AVCTP_W2_SEND_COMMAND; 1248 1249 connection->transaction_label++; 1250 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1251 connection->command_type = AVRCP_CTYPE_STATUS; 1252 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1253 connection->subunit_id = AVRCP_SUBUNIT_ID; 1254 int pos = 0; 1255 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1256 pos += 3; 1257 connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; // PDU ID 1258 connection->cmd_operands[pos++] = 0; 1259 1260 // Parameter Length 1261 big_endian_store_16(connection->cmd_operands, pos, 9); 1262 pos += 2; 1263 1264 // write 8 bytes value 1265 memset(connection->cmd_operands + pos, 0, 8); // identifier: PLAYING 1266 pos += 8; 1267 1268 connection->cmd_operands[pos++] = 0; // attribute count, if 0 get all attributes 1269 // every attribute is 4 bytes long 1270 1271 connection->cmd_operands_length = pos; 1272 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1273 return ERROR_CODE_SUCCESS; 1274 } 1275 1276 uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){ 1277 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1278 if (!connection){ 1279 log_error("avrcp_get_capabilities: could not find a connection."); 1280 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1281 } 1282 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1283 connection->state = AVCTP_W2_SEND_COMMAND; 1284 1285 connection->transaction_label++; 1286 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1287 connection->command_type = AVRCP_CTYPE_CONTROL; 1288 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1289 connection->subunit_id = AVRCP_SUBUNIT_ID; 1290 int pos = 0; 1291 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1292 pos += 3; 1293 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME; // PDU ID 1294 connection->cmd_operands[pos++] = 0; 1295 1296 // Parameter Length 1297 big_endian_store_16(connection->cmd_operands, pos, 1); 1298 pos += 2; 1299 connection->cmd_operands[pos++] = volume; 1300 1301 connection->cmd_operands_length = pos; 1302 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1303 return ERROR_CODE_SUCCESS; 1304 } 1305 1306 uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){ 1307 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1308 if (!connection){ 1309 log_error("avrcp_get_capabilities: could not find a connection."); 1310 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1311 } 1312 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1313 connection->state = AVCTP_W2_SEND_COMMAND; 1314 1315 connection->transaction_label++; 1316 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1317 connection->command_type = AVRCP_CTYPE_STATUS; 1318 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1319 connection->subunit_id = AVRCP_SUBUNIT_ID; 1320 big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID); 1321 connection->cmd_operands[3] = AVRCP_PDU_ID_GetCurrentPlayerApplicationSettingValue; // PDU ID 1322 connection->cmd_operands[4] = 0; 1323 big_endian_store_16(connection->cmd_operands, 5, 5); // parameter length 1324 connection->cmd_operands[7] = 4; // NumPlayerApplicationSettingAttributeID 1325 // PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133 1326 connection->cmd_operands[8] = 0x01; // equalizer (1-OFF, 2-ON) 1327 connection->cmd_operands[9] = 0x02; // repeat (1-off, 2-single track, 3-all tracks, 4-group repeat) 1328 connection->cmd_operands[10] = 0x03; // shuffle (1-off, 2-all tracks, 3-group shuffle) 1329 connection->cmd_operands[11] = 0x04; // scan (1-off, 2-all tracks, 3-group scan) 1330 connection->cmd_operands_length = 12; 1331 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1332 return ERROR_CODE_SUCCESS; 1333 } 1334 1335 static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){ 1336 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1337 if (!connection){ 1338 log_error("avrcp_get_capabilities: could not find a connection."); 1339 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1340 } 1341 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1342 connection->state = AVCTP_W2_SEND_COMMAND; 1343 1344 connection->transaction_label++; 1345 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1346 connection->command_type = AVRCP_CTYPE_CONTROL; 1347 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1348 connection->subunit_id = AVRCP_SUBUNIT_ID; 1349 int pos = 0; 1350 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1351 pos += 3; 1352 connection->cmd_operands[pos++] = AVRCP_PDU_ID_SetPlayerApplicationSettingValue; // PDU ID 1353 connection->cmd_operands[pos++] = 0; 1354 // Parameter Length 1355 big_endian_store_16(connection->cmd_operands, pos, 3); 1356 pos += 2; 1357 connection->cmd_operands[pos++] = 2; 1358 connection->cmd_operands_length = pos; 1359 connection->cmd_operands[pos++] = attr_id; 1360 connection->cmd_operands[pos++] = attr_value; 1361 connection->cmd_operands_length = pos; 1362 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1363 return ERROR_CODE_SUCCESS; 1364 } 1365 1366 uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){ 1367 if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1368 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode); 1369 } 1370 1371 uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){ 1372 if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1373 return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode); 1374 } 1375 1376 uint8_t avrcp_controller_play_item_for_scope(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){ 1377 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1378 if (!connection){ 1379 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1380 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1381 } 1382 if (connection->state != AVCTP_CONNECTION_OPENED){ 1383 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1384 return ERROR_CODE_COMMAND_DISALLOWED; 1385 } 1386 connection->state = AVCTP_W2_SEND_COMMAND; 1387 1388 connection->transaction_label++; 1389 connection->command_type = AVRCP_CTYPE_CONTROL; 1390 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1391 connection->subunit_id = AVRCP_SUBUNIT_ID; 1392 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1393 int pos = 0; 1394 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1395 pos += 3; 1396 connection->cmd_operands[pos++] = AVRCP_PDU_ID_PLAY_ITEM; // PDU ID 1397 // reserved 1398 connection->cmd_operands[pos++] = 0; 1399 // Parameter Length 1400 big_endian_store_16(connection->cmd_operands, pos, 11); 1401 pos += 2; 1402 connection->cmd_operands[pos++] = scope; 1403 memset(&connection->cmd_operands[pos], 0, 8); 1404 if (uid){ 1405 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1406 } 1407 pos += 8; 1408 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1409 pos += 2; 1410 connection->cmd_operands_length = pos; 1411 1412 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1413 return ERROR_CODE_SUCCESS; 1414 } 1415 1416 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){ 1417 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1418 if (!connection){ 1419 log_error("Could not find a connection with cid 0%02x.", avrcp_cid); 1420 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1421 } 1422 if (connection->state != AVCTP_CONNECTION_OPENED){ 1423 log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state); 1424 return ERROR_CODE_COMMAND_DISALLOWED; 1425 } 1426 connection->state = AVCTP_W2_SEND_COMMAND; 1427 1428 connection->transaction_label++; 1429 connection->command_type = AVRCP_CTYPE_CONTROL; 1430 connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL; 1431 connection->subunit_id = AVRCP_SUBUNIT_ID; 1432 connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT; 1433 int pos = 0; 1434 big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID); 1435 pos += 3; 1436 connection->cmd_operands[pos++] = AVRCP_PDU_ID_ADD_TO_NOW_PLAYING; // PDU ID 1437 // reserved 1438 connection->cmd_operands[pos++] = 0; 1439 // Parameter Length 1440 big_endian_store_16(connection->cmd_operands, pos, 11); 1441 pos += 2; 1442 connection->cmd_operands[pos++] = scope; 1443 memset(&connection->cmd_operands[pos], 0, 8); 1444 if (uid){ 1445 (void)memcpy(&connection->cmd_operands[pos], uid, 8); 1446 } 1447 pos += 8; 1448 big_endian_store_16(connection->cmd_operands, pos, uid_counter); 1449 pos += 2; 1450 connection->cmd_operands_length = pos; 1451 1452 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1453 return ERROR_CODE_SUCCESS; 1454 } 1455 1456 uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){ 1457 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1458 if (!connection){ 1459 log_error("avrcp_controller_play_item: could not find a connection."); 1460 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1461 } 1462 connection->max_num_fragments = max_num_fragments; 1463 return ERROR_CODE_SUCCESS; 1464 } 1465 1466 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){ 1467 avrcp_connection_t * connection = get_avrcp_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid); 1468 if (!connection){ 1469 log_error("avrcp_controller_play_item: could not find a connection."); 1470 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1471 } 1472 1473 if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED; 1474 connection->state = AVCTP_W2_SEND_FRAGMENTED_COMMAND; 1475 1476 connection->transaction_label++; 1477 connection->command_opcode = command_opcode; 1478 connection->command_type = command_type; 1479 connection->subunit_type = subunit_type; 1480 connection->subunit_id = subunit_id; 1481 connection->cmd_operands_fragmented_buffer = command_buffer; 1482 connection->cmd_operands_fragmented_pos = 0; 1483 connection->cmd_operands_fragmented_len = command_len; 1484 1485 avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid); 1486 return ERROR_CODE_SUCCESS; 1487 } 1488