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