xref: /btstack/src/classic/avrcp_controller.c (revision e2f2541787fb1a2a99cff34b41ad8a2517cbcfaf)
16983e65eSMilanka Ringwald /*
26983e65eSMilanka Ringwald  * Copyright (C) 2016 BlueKitchen GmbH
36983e65eSMilanka Ringwald  *
46983e65eSMilanka Ringwald  * Redistribution and use in source and binary forms, with or without
56983e65eSMilanka Ringwald  * modification, are permitted provided that the following conditions
66983e65eSMilanka Ringwald  * are met:
76983e65eSMilanka Ringwald  *
86983e65eSMilanka Ringwald  * 1. Redistributions of source code must retain the above copyright
96983e65eSMilanka Ringwald  *    notice, this list of conditions and the following disclaimer.
106983e65eSMilanka Ringwald  * 2. Redistributions in binary form must reproduce the above copyright
116983e65eSMilanka Ringwald  *    notice, this list of conditions and the following disclaimer in the
126983e65eSMilanka Ringwald  *    documentation and/or other materials provided with the distribution.
136983e65eSMilanka Ringwald  * 3. Neither the name of the copyright holders nor the names of
146983e65eSMilanka Ringwald  *    contributors may be used to endorse or promote products derived
156983e65eSMilanka Ringwald  *    from this software without specific prior written permission.
166983e65eSMilanka Ringwald  * 4. Any redistribution, use, or modification is done solely for
176983e65eSMilanka Ringwald  *    personal benefit and not for any commercial purpose or for
186983e65eSMilanka Ringwald  *    monetary gain.
196983e65eSMilanka Ringwald  *
206983e65eSMilanka Ringwald  * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
216983e65eSMilanka Ringwald  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
226983e65eSMilanka Ringwald  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
236983e65eSMilanka Ringwald  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
246983e65eSMilanka Ringwald  * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
256983e65eSMilanka Ringwald  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
266983e65eSMilanka Ringwald  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
276983e65eSMilanka Ringwald  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
286983e65eSMilanka Ringwald  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
296983e65eSMilanka Ringwald  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
306983e65eSMilanka Ringwald  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
316983e65eSMilanka Ringwald  * SUCH DAMAGE.
326983e65eSMilanka Ringwald  *
336983e65eSMilanka Ringwald  * Please inquire about commercial licensing options at
346983e65eSMilanka Ringwald  * [email protected]
356983e65eSMilanka Ringwald  *
366983e65eSMilanka Ringwald  */
376983e65eSMilanka Ringwald 
38e501bae0SMatthias Ringwald #define BTSTACK_FILE__ "avrcp_controller.c"
396983e65eSMilanka Ringwald 
406983e65eSMilanka Ringwald #include <stdint.h>
416983e65eSMilanka Ringwald #include <string.h>
42adaba9f3SMatthias Ringwald #include <inttypes.h>
436983e65eSMilanka Ringwald 
446983e65eSMilanka Ringwald #include "btstack.h"
456983e65eSMilanka Ringwald #include "classic/avrcp.h"
466983e65eSMilanka Ringwald #include "classic/avrcp_controller.h"
476983e65eSMilanka Ringwald 
484adb0765SMatthias Ringwald // made public in avrcp_controller.h
49e3d57ee2SMilanka Ringwald avrcp_context_t avrcp_controller_context;
504adb0765SMatthias Ringwald 
5111014891SMilanka Ringwald static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){
52*e2f25417SMilanka Ringwald     return controller_supported_features & AVRCP_FEATURE_MASK_BROWSING;
5311014891SMilanka Ringwald }
5411014891SMilanka Ringwald 
554f0111ebSMilanka Ringwald 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){
5611014891SMilanka Ringwald     avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name);
576983e65eSMilanka Ringwald }
586983e65eSMilanka Ringwald 
596983e65eSMilanka Ringwald 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){
60be4cc80aSMilanka Ringwald     btstack_assert(callback != NULL);
61be4cc80aSMilanka Ringwald 
626983e65eSMilanka Ringwald     uint8_t event[8];
636983e65eSMilanka Ringwald     int pos = 0;
646983e65eSMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
656983e65eSMilanka Ringwald     event[pos++] = sizeof(event) - 2;
666983e65eSMilanka Ringwald     event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE;
676983e65eSMilanka Ringwald     little_endian_store_16(event, pos, avrcp_cid);
686983e65eSMilanka Ringwald     pos += 2;
696983e65eSMilanka Ringwald     event[pos++] = ctype;
706983e65eSMilanka Ringwald     event[pos++] = repeat_mode;
716983e65eSMilanka Ringwald     event[pos++] = shuffle_mode;
726983e65eSMilanka Ringwald     (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
736983e65eSMilanka Ringwald }
746983e65eSMilanka Ringwald 
756983e65eSMilanka Ringwald 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){
76be4cc80aSMilanka Ringwald     btstack_assert(callback != NULL);
77be4cc80aSMilanka Ringwald 
786983e65eSMilanka Ringwald     uint8_t event[7];
796983e65eSMilanka Ringwald     int pos = 0;
806983e65eSMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
816983e65eSMilanka Ringwald     event[pos++] = sizeof(event) - 2;
826983e65eSMilanka Ringwald     event[pos++] = subevent;
836983e65eSMilanka Ringwald     little_endian_store_16(event, pos, avrcp_cid);
846983e65eSMilanka Ringwald     pos += 2;
856983e65eSMilanka Ringwald     event[pos++] = ctype;
866983e65eSMilanka Ringwald     event[pos++] = operation_id;
876983e65eSMilanka Ringwald     (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
886983e65eSMilanka Ringwald }
896983e65eSMilanka Ringwald 
906983e65eSMilanka Ringwald static void avrcp_press_and_hold_timeout_handler(btstack_timer_source_t * timer){
916983e65eSMilanka Ringwald     UNUSED(timer);
92dfbbc26bSMatthias Ringwald     avrcp_connection_t * connection = (avrcp_connection_t*) btstack_run_loop_get_timer_context(timer);
936983e65eSMilanka Ringwald     btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout
946983e65eSMilanka Ringwald     btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer);
956983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_PRESS_COMMAND;
966983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
976983e65eSMilanka Ringwald }
986983e65eSMilanka Ringwald 
996983e65eSMilanka Ringwald static void avrcp_press_and_hold_timer_start(avrcp_connection_t * connection){
1006983e65eSMilanka Ringwald     btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer);
1016983e65eSMilanka Ringwald     btstack_run_loop_set_timer_handler(&connection->press_and_hold_cmd_timer, avrcp_press_and_hold_timeout_handler);
1026983e65eSMilanka Ringwald     btstack_run_loop_set_timer_context(&connection->press_and_hold_cmd_timer, connection);
1036983e65eSMilanka Ringwald     btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout
1046983e65eSMilanka Ringwald     btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer);
1056983e65eSMilanka Ringwald }
1066983e65eSMilanka Ringwald 
1076983e65eSMilanka Ringwald static void avrcp_press_and_hold_timer_stop(avrcp_connection_t * connection){
1086983e65eSMilanka Ringwald     connection->continuous_fast_forward_cmd = 0;
1096983e65eSMilanka Ringwald     btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer);
1106983e65eSMilanka Ringwald }
1116983e65eSMilanka Ringwald 
1126983e65eSMilanka Ringwald static uint8_t request_pass_through_release_control_cmd(avrcp_connection_t * connection){
1136983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_RELEASE_COMMAND;
1146983e65eSMilanka Ringwald     if (connection->continuous_fast_forward_cmd){
1156983e65eSMilanka Ringwald         avrcp_press_and_hold_timer_stop(connection);
1166983e65eSMilanka Ringwald     }
1176983e65eSMilanka Ringwald     connection->cmd_operands[0] = 0x80 | connection->cmd_operands[0];
1186983e65eSMilanka Ringwald     connection->transaction_label++;
1196983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1206983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
1216983e65eSMilanka Ringwald }
1226983e65eSMilanka Ringwald 
123638481deSMilanka Ringwald 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){
1241945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1256983e65eSMilanka Ringwald     if (!connection){
1260036e267SMilanka Ringwald         log_error("avrcp: could not find a connection. avrcp cid 0x%02x", avrcp_cid);
1276983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1286983e65eSMilanka Ringwald     }
1290036e267SMilanka Ringwald 
1306983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
1316983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_PRESS_COMMAND;
1326983e65eSMilanka Ringwald     connection->command_opcode =  AVRCP_CMD_OPCODE_PASS_THROUGH;
1336983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
1346983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
1356983e65eSMilanka Ringwald     connection->subunit_id =   AVRCP_SUBUNIT_ID;
1366983e65eSMilanka Ringwald     connection->cmd_operands_length = 0;
1376983e65eSMilanka Ringwald 
1386983e65eSMilanka Ringwald     connection->continuous_fast_forward_cmd = continuous_fast_forward_cmd;
1396983e65eSMilanka Ringwald     connection->cmd_operands_length = 2;
1406983e65eSMilanka Ringwald     connection->cmd_operands[0] = opid;
1416983e65eSMilanka Ringwald     if (playback_speed > 0){
1426983e65eSMilanka Ringwald         connection->cmd_operands[2] = playback_speed;
1436983e65eSMilanka Ringwald         connection->cmd_operands_length++;
1446983e65eSMilanka Ringwald     }
1456983e65eSMilanka Ringwald     connection->cmd_operands[1] = connection->cmd_operands_length - 2;
1466983e65eSMilanka Ringwald 
1476983e65eSMilanka Ringwald     if (connection->continuous_fast_forward_cmd){
1486983e65eSMilanka Ringwald         avrcp_press_and_hold_timer_start(connection);
1496983e65eSMilanka Ringwald     }
1506983e65eSMilanka Ringwald 
1516983e65eSMilanka Ringwald     connection->transaction_label++;
1526983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1536983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
1546983e65eSMilanka Ringwald }
1556983e65eSMilanka Ringwald 
1566983e65eSMilanka Ringwald static uint8_t request_single_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){
157638481deSMilanka Ringwald     return request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, 0);
1586983e65eSMilanka Ringwald }
1596983e65eSMilanka Ringwald 
1606983e65eSMilanka Ringwald static uint8_t request_continuous_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){
161638481deSMilanka Ringwald     return request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, 1);
1626983e65eSMilanka Ringwald }
1636983e65eSMilanka Ringwald 
164c4b5c3d5SMatthias Ringwald #define AVRCP_CMD_BUFFER_SIZE 30
165c4b5c3d5SMatthias Ringwald static uint16_t avrcp_get_max_payload_size_for_packet_type(avrcp_packet_type_t packet_type){
166c4b5c3d5SMatthias Ringwald     switch (packet_type){
167c4b5c3d5SMatthias Ringwald         case AVRCP_SINGLE_PACKET:
168c4b5c3d5SMatthias Ringwald             return AVRCP_CMD_BUFFER_SIZE - 3;
169c4b5c3d5SMatthias Ringwald         case AVRCP_START_PACKET:
170c4b5c3d5SMatthias Ringwald             return AVRCP_CMD_BUFFER_SIZE - 4;
171c4b5c3d5SMatthias Ringwald         case AVRCP_CONTINUE_PACKET:
172c4b5c3d5SMatthias Ringwald         case AVRCP_END_PACKET:
173c4b5c3d5SMatthias Ringwald             return AVRCP_CMD_BUFFER_SIZE - 1;
174c4b5c3d5SMatthias Ringwald     }
175ef004914SMatthias Ringwald     return 0;
176c4b5c3d5SMatthias Ringwald }
177c4b5c3d5SMatthias Ringwald 
178c4b5c3d5SMatthias Ringwald static int avrcp_send_cmd(avrcp_connection_t * connection, avrcp_packet_type_t packet_type){
179c4b5c3d5SMatthias Ringwald     uint8_t command[AVRCP_CMD_BUFFER_SIZE];
1806983e65eSMilanka Ringwald     int pos = 0;
181c4b5c3d5SMatthias Ringwald     uint16_t max_bytes = sizeof(command) - 1;
1827f803253SMilanka Ringwald 
1836983e65eSMilanka Ringwald     // transport header
1846983e65eSMilanka Ringwald     // Transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier)
185c4b5c3d5SMatthias Ringwald     command[pos++] = (connection->transaction_label << 4) | (packet_type << 2) | (AVRCP_COMMAND_FRAME << 1) | 0;
186c4b5c3d5SMatthias Ringwald 
187c4b5c3d5SMatthias Ringwald     if (packet_type == AVRCP_START_PACKET){
188c4b5c3d5SMatthias Ringwald         // num packets: (3 bytes overhead (PID, num packets) + command) / (MTU - transport header)
189c4b5c3d5SMatthias Ringwald         command[pos++] = ((connection->cmd_operands_fragmented_len + 3 - 1) / (AVRCP_CMD_BUFFER_SIZE - 1)) + 1;
190c4b5c3d5SMatthias Ringwald         max_bytes -= 3;
191c4b5c3d5SMatthias Ringwald     }
192c4b5c3d5SMatthias Ringwald 
1930e588213SMatthias Ringwald     if ((packet_type == AVRCP_SINGLE_PACKET) || (packet_type == AVRCP_START_PACKET)){
1946983e65eSMilanka Ringwald         // Profile IDentifier (PID)
1956983e65eSMilanka Ringwald         command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8;
1966983e65eSMilanka Ringwald         command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF;
1976983e65eSMilanka Ringwald 
1986983e65eSMilanka Ringwald         // command_type
1996983e65eSMilanka Ringwald         command[pos++] = connection->command_type;
2006983e65eSMilanka Ringwald         // subunit_type | subunit ID
2016983e65eSMilanka Ringwald         command[pos++] = (connection->subunit_type << 3) | connection->subunit_id;
2026983e65eSMilanka Ringwald         // opcode
2036983e65eSMilanka Ringwald         command[pos++] = (uint8_t)connection->command_opcode;
204c4b5c3d5SMatthias Ringwald     }
205c4b5c3d5SMatthias Ringwald 
206c4b5c3d5SMatthias Ringwald     if (packet_type == AVRCP_SINGLE_PACKET){
2076983e65eSMilanka Ringwald         // operands
2086535961aSMatthias Ringwald         (void)memcpy(command + pos, connection->cmd_operands,
2096535961aSMatthias Ringwald                      connection->cmd_operands_length);
2106983e65eSMilanka Ringwald         pos += connection->cmd_operands_length;
211c4b5c3d5SMatthias Ringwald     } else {
212c4b5c3d5SMatthias Ringwald         uint16_t bytes_to_copy = btstack_min(connection->cmd_operands_fragmented_len-connection->cmd_operands_fragmented_pos, max_bytes);
2136535961aSMatthias Ringwald         (void)memcpy(command + pos,
2146535961aSMatthias Ringwald                      &connection->cmd_operands_fragmented_buffer[connection->cmd_operands_fragmented_pos],
2156535961aSMatthias Ringwald                      bytes_to_copy);
216c4b5c3d5SMatthias Ringwald         pos += bytes_to_copy;
217c4b5c3d5SMatthias Ringwald         connection->cmd_operands_fragmented_pos += bytes_to_copy;
218c4b5c3d5SMatthias Ringwald     }
2196983e65eSMilanka Ringwald 
220c19bc494SMatthias Ringwald     return l2cap_send(connection->l2cap_signaling_cid, command, pos);
2216983e65eSMilanka Ringwald }
2226983e65eSMilanka Ringwald 
2236983e65eSMilanka Ringwald static int avrcp_register_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){
2246983e65eSMilanka Ringwald     if (connection->notifications_to_deregister & (1 << event_id)) return 0;
2256983e65eSMilanka Ringwald     if (connection->notifications_enabled & (1 << event_id)) return 0;
2266983e65eSMilanka Ringwald     if (connection->notifications_to_register & (1 << event_id)) return 0;
2276983e65eSMilanka Ringwald     connection->notifications_to_register |= (1 << event_id);
2286983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
2296983e65eSMilanka Ringwald     return 1;
2306983e65eSMilanka Ringwald }
2316983e65eSMilanka Ringwald 
2326983e65eSMilanka Ringwald static void avrcp_prepare_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){
2336983e65eSMilanka Ringwald     connection->transaction_label++;
2346983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
2356983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_NOTIFY;
2366983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
2376983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
2386983e65eSMilanka Ringwald     int pos = 0;
2396983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
2406983e65eSMilanka Ringwald     pos += 3;
2416983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_REGISTER_NOTIFICATION;
2426983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 0;                     // reserved(upper 6) | packet_type -> 0
2436983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 5);     // parameter length
2446983e65eSMilanka Ringwald     pos += 2;
2456983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = event_id;
2466fa3dbf2SMilanka Ringwald     big_endian_store_32(connection->cmd_operands, pos, 1); // send notification on playback position every second, for other notifications it is ignored
2476983e65eSMilanka Ringwald     pos += 4;
2486983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
2496983e65eSMilanka Ringwald     // AVRCP_SPEC_V14.pdf 166
2506983e65eSMilanka Ringwald     // answer page 61
2516983e65eSMilanka Ringwald }
2526983e65eSMilanka Ringwald 
2531bf7a74fSMilanka Ringwald 
2541bf7a74fSMilanka Ringwald static void avrcp_parser_reset(avrcp_connection_t * connection){
2551bf7a74fSMilanka Ringwald     connection->list_offset = 0;
2561bf7a74fSMilanka Ringwald     connection->num_attributes = 0;
2571bf7a74fSMilanka Ringwald     connection->num_parsed_attributes = 0;
2581bf7a74fSMilanka Ringwald     connection->parser_attribute_header_pos = 0;
2598b2b4034SMilanka Ringwald     connection->num_received_fragments = 0;
2608b2b4034SMilanka Ringwald     connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER;
2611bf7a74fSMilanka Ringwald }
2621bf7a74fSMilanka Ringwald 
2631bf7a74fSMilanka Ringwald 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){
2641bf7a74fSMilanka Ringwald     uint8_t event[7];
2651bf7a74fSMilanka Ringwald     int pos = 0;
2661bf7a74fSMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
2671bf7a74fSMilanka Ringwald     event[pos++] = sizeof(event) - 2;
2681bf7a74fSMilanka Ringwald     event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE;
2691bf7a74fSMilanka Ringwald     little_endian_store_16(event, pos, avrcp_cid);
2701bf7a74fSMilanka Ringwald     pos += 2;
2711bf7a74fSMilanka Ringwald     event[pos++] = ctype;
2721bf7a74fSMilanka Ringwald     event[pos++] = status;
2731bf7a74fSMilanka Ringwald     // printf_hexdump(event, pos);
2741bf7a74fSMilanka Ringwald     (*callback)(HCI_EVENT_PACKET, 0, event, pos);
2751bf7a74fSMilanka Ringwald }
2761bf7a74fSMilanka Ringwald 
2771bf7a74fSMilanka Ringwald 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){
2781bf7a74fSMilanka Ringwald     uint8_t event[HCI_EVENT_BUFFER_SIZE];
2791bf7a74fSMilanka Ringwald     int pos = 0;
2801bf7a74fSMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
2811bf7a74fSMilanka Ringwald     // reserve one byte for subevent type and data len
2821bf7a74fSMilanka Ringwald     int data_len_pos = pos;
2831bf7a74fSMilanka Ringwald     pos++;
2841bf7a74fSMilanka Ringwald     int subevent_type_pos = pos;
2851bf7a74fSMilanka Ringwald     pos++;
2861bf7a74fSMilanka Ringwald     little_endian_store_16(event, pos, avrcp_cid);
2871bf7a74fSMilanka Ringwald     pos += 2;
2881bf7a74fSMilanka Ringwald     event[pos++] = ctype;
2891bf7a74fSMilanka Ringwald 
2901bf7a74fSMilanka Ringwald     switch (attr_id){
2911bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_TITLE:
2921bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO;
2931bf7a74fSMilanka Ringwald             event[pos++] = value_len;
2946535961aSMatthias Ringwald             (void)memcpy(event + pos, value, value_len);
2951bf7a74fSMilanka Ringwald             break;
2961bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_ARTIST:
2971bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO;
2981bf7a74fSMilanka Ringwald             event[pos++] = value_len;
2996535961aSMatthias Ringwald             (void)memcpy(event + pos, value, value_len);
3001bf7a74fSMilanka Ringwald             break;
3011bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_ALBUM:
3021bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO;
3031bf7a74fSMilanka Ringwald             event[pos++] = value_len;
3046535961aSMatthias Ringwald             (void)memcpy(event + pos, value, value_len);
3051bf7a74fSMilanka Ringwald             break;
3061bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_GENRE:
3071bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO;
3081bf7a74fSMilanka Ringwald             event[pos++] = value_len;
3096535961aSMatthias Ringwald             (void)memcpy(event + pos, value, value_len);
3101bf7a74fSMilanka Ringwald             break;
3112f511ffbSMilanka Ringwald         case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS:
3121bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO;
3131bf7a74fSMilanka Ringwald             if (value){
3141bf7a74fSMilanka Ringwald                 little_endian_store_32(event, pos, btstack_atoi((char *)value));
3151bf7a74fSMilanka Ringwald             } else {
3161bf7a74fSMilanka Ringwald                 little_endian_store_32(event, pos, 0);
3171bf7a74fSMilanka Ringwald             }
3181bf7a74fSMilanka Ringwald             pos += 4;
3191bf7a74fSMilanka Ringwald             break;
3201bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_TRACK:
3211bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO;
3221bf7a74fSMilanka Ringwald             if (value){
3231bf7a74fSMilanka Ringwald                 event[pos++] = btstack_atoi((char *)value);
3241bf7a74fSMilanka Ringwald             } else {
3251bf7a74fSMilanka Ringwald                 event[pos++] = 0;
3261bf7a74fSMilanka Ringwald             }
3271bf7a74fSMilanka Ringwald             break;
328864d08b0SMilanka Ringwald         case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS:
3291bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO;
3301bf7a74fSMilanka Ringwald             if (value){
3311bf7a74fSMilanka Ringwald                 event[pos++] = btstack_atoi((char *)value);
3321bf7a74fSMilanka Ringwald             } else {
3331bf7a74fSMilanka Ringwald                 event[pos++] = 0;
3341bf7a74fSMilanka Ringwald             }
3351bf7a74fSMilanka Ringwald             break;
3361bf7a74fSMilanka Ringwald         default:
3371bf7a74fSMilanka Ringwald             break;
3381bf7a74fSMilanka Ringwald     }
3391bf7a74fSMilanka Ringwald     event[data_len_pos] = pos - 2;
3401bf7a74fSMilanka Ringwald     (*callback)(HCI_EVENT_PACKET, 0, event, pos);
3411bf7a74fSMilanka Ringwald }
3421bf7a74fSMilanka Ringwald 
3431bf7a74fSMilanka Ringwald static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){
344836408dfSMatthias Ringwald     uint16_t attribute_total_value_len;
345836408dfSMatthias Ringwald     uint32_t attribute_id;
3461c7ac872SMatthias Ringwald     // printf("avrcp_parser_process_byte: %02x, state %02x\n", byte, connection->parser_state);
3471bf7a74fSMilanka Ringwald     switch(connection->parser_state){
348836408dfSMatthias Ringwald         case AVRCP_PARSER_GET_ATTRIBUTE_HEADER:
3491bf7a74fSMilanka Ringwald             connection->parser_attribute_header[connection->parser_attribute_header_pos++] = byte;
3501bf7a74fSMilanka Ringwald             connection->list_offset++;
3519771e28cSMatthias Ringwald 
3529771e28cSMatthias Ringwald             if (connection->parser_attribute_header_pos < AVRCP_ATTRIBUTE_HEADER_LEN) return;
3539771e28cSMatthias Ringwald 
354836408dfSMatthias Ringwald             attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
3558b2b4034SMilanka Ringwald             connection->attribute_value_len = btstack_min(attribute_total_value_len, AVRCP_MAX_ATTRIBUTTE_SIZE);
3569771e28cSMatthias Ringwald             if (connection->attribute_value_len > 0){
3579771e28cSMatthias Ringwald                 // get ready for attribute value
358836408dfSMatthias Ringwald                 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_VALUE;
359836408dfSMatthias Ringwald                 return;
3609771e28cSMatthias Ringwald             }
3619771e28cSMatthias Ringwald 
3629771e28cSMatthias Ringwald             // emit empty attribute
3639771e28cSMatthias Ringwald             attribute_id = big_endian_read_32(connection->parser_attribute_header, 0);
364dfbbc26bSMatthias Ringwald             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);
3659771e28cSMatthias Ringwald 
3669771e28cSMatthias Ringwald             // done, see below
3679771e28cSMatthias Ringwald             break;
368836408dfSMatthias Ringwald 
369836408dfSMatthias Ringwald         case AVRCP_PARSER_GET_ATTRIBUTE_VALUE:
3701bf7a74fSMilanka Ringwald             connection->attribute_value[connection->attribute_value_offset++] = byte;
3711bf7a74fSMilanka Ringwald             connection->list_offset++;
3729771e28cSMatthias Ringwald 
3739771e28cSMatthias Ringwald             if (connection->attribute_value_offset < connection->attribute_value_len) return;
3748b2b4034SMilanka Ringwald 
375836408dfSMatthias Ringwald             // emit (potentially partial) attribute
376836408dfSMatthias Ringwald             attribute_id = big_endian_read_32(connection->parser_attribute_header, 0);
377dfbbc26bSMatthias Ringwald             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);
3781bf7a74fSMilanka Ringwald 
379836408dfSMatthias Ringwald             attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
380836408dfSMatthias Ringwald             if (connection->attribute_value_offset < attribute_total_value_len){
3819771e28cSMatthias Ringwald                 // ignore rest of attribute
38214e95846SMilanka Ringwald                 connection->parser_state = AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE;
383836408dfSMatthias Ringwald                 return;
3841bf7a74fSMilanka Ringwald             }
3859771e28cSMatthias Ringwald 
3869771e28cSMatthias Ringwald             // done, see below
387836408dfSMatthias Ringwald             break;
3881bf7a74fSMilanka Ringwald 
38914e95846SMilanka Ringwald         case AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE:
3901bf7a74fSMilanka Ringwald             connection->attribute_value_offset++;
3919771e28cSMatthias Ringwald             connection->list_offset++;
3929771e28cSMatthias Ringwald 
3939771e28cSMatthias Ringwald             attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
3949771e28cSMatthias Ringwald             if (connection->attribute_value_offset < attribute_total_value_len) return;
3959771e28cSMatthias Ringwald 
3969771e28cSMatthias Ringwald             // done, see below
397836408dfSMatthias Ringwald             break;
3981bf7a74fSMilanka Ringwald 
399836408dfSMatthias Ringwald         default:
400836408dfSMatthias Ringwald             return;
4011bf7a74fSMilanka Ringwald     }
402836408dfSMatthias Ringwald 
403836408dfSMatthias Ringwald     // attribute fully read, check if more to come
404836408dfSMatthias Ringwald     if (connection->list_offset < connection->list_size){
4059771e28cSMatthias Ringwald         // more to come, reset parser
4061bf7a74fSMilanka Ringwald         connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER;
4071bf7a74fSMilanka Ringwald         connection->parser_attribute_header_pos = 0;
4081c7ac872SMatthias Ringwald         connection->attribute_value_offset = 0;
409836408dfSMatthias Ringwald     } else {
410836408dfSMatthias Ringwald         // fully done
411836408dfSMatthias Ringwald         avrcp_parser_reset(connection);
412836408dfSMatthias Ringwald         avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 0);
4131bf7a74fSMilanka Ringwald     }
4141bf7a74fSMilanka Ringwald }
4151bf7a74fSMilanka Ringwald 
4161bf7a74fSMilanka Ringwald 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){
4171bf7a74fSMilanka Ringwald     int i;
4181bf7a74fSMilanka Ringwald     for (i=0;i<num_bytes_to_read;i++){
4191bf7a74fSMilanka Ringwald         avrcp_parser_process_byte(packet[i], connection, ctype);
4201bf7a74fSMilanka Ringwald     }
4211bf7a74fSMilanka Ringwald }
4221bf7a74fSMilanka Ringwald 
4231bf7a74fSMilanka Ringwald static uint8_t avrcp_controller_request_abort_continuation(avrcp_connection_t * connection){
4241bf7a74fSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
4251bf7a74fSMilanka Ringwald     connection->transaction_label++;
4261bf7a74fSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
4271bf7a74fSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
4281bf7a74fSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
4291bf7a74fSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
4301bf7a74fSMilanka Ringwald     int pos = 0;
4311bf7a74fSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
4321bf7a74fSMilanka Ringwald     pos += 3;
4331bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE; // PDU ID
4341bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
4351bf7a74fSMilanka Ringwald     // Parameter Length
4361bf7a74fSMilanka Ringwald     connection->cmd_operands_length = 8;
4371bf7a74fSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 1);
4381bf7a74fSMilanka Ringwald     pos += 2;
4391bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES;
4401bf7a74fSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
4411bf7a74fSMilanka Ringwald     return ERROR_CODE_SUCCESS;
4421bf7a74fSMilanka Ringwald }
4431bf7a74fSMilanka Ringwald 
4441bf7a74fSMilanka Ringwald 
4451bf7a74fSMilanka Ringwald static uint8_t avrcp_controller_request_continue_response(avrcp_connection_t * connection){
4461bf7a74fSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
4471bf7a74fSMilanka Ringwald     connection->transaction_label++;
4481bf7a74fSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
4491bf7a74fSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
4501bf7a74fSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
4511bf7a74fSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
4521bf7a74fSMilanka Ringwald     int pos = 0;
4531bf7a74fSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
4541bf7a74fSMilanka Ringwald     pos += 3;
4551bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE; // PDU ID
4561bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
4571bf7a74fSMilanka Ringwald     // Parameter Length
4581bf7a74fSMilanka Ringwald     connection->cmd_operands_length = 8;
4591bf7a74fSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 1);
4601bf7a74fSMilanka Ringwald     pos += 2;
4611bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES;
4621bf7a74fSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
4631bf7a74fSMilanka Ringwald     return ERROR_CODE_SUCCESS;
4641bf7a74fSMilanka Ringwald }
4651bf7a74fSMilanka Ringwald 
4666983e65eSMilanka Ringwald static void avrcp_handle_l2cap_data_packet_for_signaling_connection(avrcp_connection_t * connection, uint8_t *packet, uint16_t size){
4676983e65eSMilanka Ringwald     uint8_t operands[20];
4686983e65eSMilanka Ringwald     uint8_t opcode;
4696983e65eSMilanka Ringwald     int     pos = 3;
4706983e65eSMilanka Ringwald 
4716983e65eSMilanka Ringwald     avrcp_command_type_t ctype = (avrcp_command_type_t) packet[pos++];
4726983e65eSMilanka Ringwald     uint8_t byte_value = packet[pos++];
4736983e65eSMilanka Ringwald     avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3);
4746983e65eSMilanka Ringwald     avrcp_subunit_type_t subunit_id = (avrcp_subunit_type_t)   (byte_value & 0x07);
4756983e65eSMilanka Ringwald     opcode = packet[pos++];
4766983e65eSMilanka Ringwald 
4776983e65eSMilanka Ringwald     uint8_t pdu_id;
4786983e65eSMilanka Ringwald     uint16_t param_length;
4796983e65eSMilanka Ringwald     switch (avrcp_cmd_opcode(packet,size)){
480ad75da14SMilanka Ringwald         case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{
481ad75da14SMilanka Ringwald             if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return;
482ad75da14SMilanka Ringwald             connection->state = AVCTP_CONNECTION_OPENED;
483ad75da14SMilanka Ringwald             // operands:
4846535961aSMatthias Ringwald             (void)memcpy(operands, packet + pos, 5);
485ad75da14SMilanka Ringwald             uint8_t unit_type = operands[1] >> 3;
486ad75da14SMilanka Ringwald             uint8_t max_subunit_ID = operands[1] & 0x07;
487ad75da14SMilanka Ringwald             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);
488ad75da14SMilanka Ringwald             break;
489ad75da14SMilanka Ringwald         }
4906983e65eSMilanka Ringwald         case AVRCP_CMD_OPCODE_UNIT_INFO:{
4916983e65eSMilanka Ringwald             if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return;
4926983e65eSMilanka Ringwald             connection->state = AVCTP_CONNECTION_OPENED;
4936983e65eSMilanka Ringwald             // operands:
4946535961aSMatthias Ringwald             (void)memcpy(operands, packet + pos, 5);
4956983e65eSMilanka Ringwald             uint8_t unit_type = operands[1] >> 3;
4966983e65eSMilanka Ringwald             uint8_t unit = operands[1] & 0x07;
497c1ab6cc1SMatthias Ringwald             uint32_t company_id = (operands[2] << 16) | (operands[3] << 8) | operands[4];
498adaba9f3SMatthias Ringwald             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,
4996983e65eSMilanka Ringwald                 ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id);
5006983e65eSMilanka Ringwald             break;
5016983e65eSMilanka Ringwald         }
5026983e65eSMilanka Ringwald         case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT:
503c1ab6cc1SMatthias Ringwald             if ((size - pos) < 7) {
5046983e65eSMilanka Ringwald                 log_error("avrcp: wrong packet size");
5056983e65eSMilanka Ringwald                 return;
5066983e65eSMilanka Ringwald             };
5076983e65eSMilanka Ringwald             // operands:
5086535961aSMatthias Ringwald             (void)memcpy(operands, packet + pos, 7);
5096983e65eSMilanka Ringwald             pos += 7;
5106983e65eSMilanka Ringwald             pdu_id = operands[3];
5116983e65eSMilanka Ringwald 
5120e588213SMatthias Ringwald             if ((connection->state != AVCTP_W2_RECEIVE_RESPONSE) && (pdu_id != AVRCP_PDU_ID_REGISTER_NOTIFICATION)){
5136983e65eSMilanka Ringwald                 log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state);
5146983e65eSMilanka Ringwald                 return;
5156983e65eSMilanka Ringwald             }
5166983e65eSMilanka Ringwald             connection->state = AVCTP_CONNECTION_OPENED;
5176983e65eSMilanka Ringwald 
5186983e65eSMilanka Ringwald             param_length = big_endian_read_16(operands, 5);
5196983e65eSMilanka Ringwald 
5206983e65eSMilanka Ringwald             log_info("        VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype));
5216983e65eSMilanka Ringwald             switch (pdu_id){
52208485fc4SMilanka Ringwald                 case AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE:{
5236983e65eSMilanka Ringwald                     uint8_t num_attributes = packet[pos++];
5246983e65eSMilanka Ringwald                     int i;
5256983e65eSMilanka Ringwald                     avrcp_repeat_mode_t  repeat_mode =  AVRCP_REPEAT_MODE_INVALID;
5266983e65eSMilanka Ringwald                     avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID;
5276983e65eSMilanka Ringwald                     for (i = 0; i < num_attributes; i++){
5286983e65eSMilanka Ringwald                         uint8_t attribute_id    = packet[pos++];
5296983e65eSMilanka Ringwald                         uint8_t value = packet[pos++];
5306983e65eSMilanka Ringwald                         switch (attribute_id){
5316983e65eSMilanka Ringwald                             case 0x02:
5326983e65eSMilanka Ringwald                                 repeat_mode = (avrcp_repeat_mode_t) value;
5336983e65eSMilanka Ringwald                                 break;
5346983e65eSMilanka Ringwald                             case 0x03:
5356983e65eSMilanka Ringwald                                 shuffle_mode = (avrcp_shuffle_mode_t) value;
5366983e65eSMilanka Ringwald                                 break;
5376983e65eSMilanka Ringwald                             default:
5386983e65eSMilanka Ringwald                                 break;
5396983e65eSMilanka Ringwald                         }
5406983e65eSMilanka Ringwald                     }
5416983e65eSMilanka Ringwald                     avrcp_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode);
5426983e65eSMilanka Ringwald                     break;
5436983e65eSMilanka Ringwald                 }
54408485fc4SMilanka Ringwald                 case AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE:{
5456983e65eSMilanka Ringwald                     uint8_t event[6];
5466983e65eSMilanka Ringwald                     int offset = 0;
5476983e65eSMilanka Ringwald                     event[offset++] = HCI_EVENT_AVRCP_META;
5486983e65eSMilanka Ringwald                     event[offset++] = sizeof(event) - 2;
5496983e65eSMilanka Ringwald                     event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE;
5506983e65eSMilanka Ringwald                     little_endian_store_16(event, offset, connection->avrcp_cid);
5516983e65eSMilanka Ringwald                     offset += 2;
5526983e65eSMilanka Ringwald                     event[offset++] = ctype;
5536983e65eSMilanka Ringwald                     (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
5546983e65eSMilanka Ringwald                     break;
5556983e65eSMilanka Ringwald                 }
5566983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{
5576983e65eSMilanka Ringwald                     uint8_t event[7];
5586983e65eSMilanka Ringwald                     int offset = 0;
5596983e65eSMilanka Ringwald                     event[offset++] = HCI_EVENT_AVRCP_META;
5606983e65eSMilanka Ringwald                     event[offset++] = sizeof(event) - 2;
5616983e65eSMilanka Ringwald                     event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE;
5626983e65eSMilanka Ringwald                     little_endian_store_16(event, offset, connection->avrcp_cid);
5636983e65eSMilanka Ringwald                     offset += 2;
5646983e65eSMilanka Ringwald                     event[offset++] = ctype;
5656983e65eSMilanka Ringwald                     event[offset++] = packet[pos++];
5666983e65eSMilanka Ringwald                     (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
5676983e65eSMilanka Ringwald                     break;
5686983e65eSMilanka Ringwald                 }
5696983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_GET_CAPABILITIES:{
5706983e65eSMilanka Ringwald                     avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++];
5716983e65eSMilanka Ringwald                     uint8_t capability_count = packet[pos++];
5726983e65eSMilanka Ringwald                     int i;
5734f5eb797SMilanka Ringwald 
5746983e65eSMilanka Ringwald                     switch (capability_id){
5754f5eb797SMilanka Ringwald                         int offset = 0;
5764f5eb797SMilanka Ringwald                         uint8_t event[10];
5774f5eb797SMilanka Ringwald 
5786983e65eSMilanka Ringwald                         case AVRCP_CAPABILITY_ID_COMPANY:
5796983e65eSMilanka Ringwald                             for (i = 0; i < capability_count; i++){
5806983e65eSMilanka Ringwald                                 uint32_t company_id = big_endian_read_24(packet, pos);
5816983e65eSMilanka Ringwald                                 pos += 3;
582adaba9f3SMatthias Ringwald                                 log_info("  0x%06" PRIx32 ", ", company_id);
5834f5eb797SMilanka Ringwald 
5844f5eb797SMilanka Ringwald                                 offset = 0;
5854f5eb797SMilanka Ringwald                                 event[offset++] = HCI_EVENT_AVRCP_META;
5864f5eb797SMilanka Ringwald                                 event[offset++] = sizeof(event) - 2;
5874f5eb797SMilanka Ringwald                                 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID;
5884f5eb797SMilanka Ringwald                                 little_endian_store_16(event, offset, connection->avrcp_cid);
5894f5eb797SMilanka Ringwald                                 offset += 2;
5904f5eb797SMilanka Ringwald                                 event[offset++] = ctype;
5914f5eb797SMilanka Ringwald                                 event[offset++] = 0;
5924f5eb797SMilanka Ringwald                                 little_endian_store_24(event, offset, company_id);
5934f5eb797SMilanka Ringwald                                 offset += 3;
5944f5eb797SMilanka Ringwald                                 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset);
5956983e65eSMilanka Ringwald                                 break;
5964f5eb797SMilanka Ringwald                             }
5974f5eb797SMilanka Ringwald 
5984f5eb797SMilanka Ringwald                             offset = 0;
5994f5eb797SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
6004f5eb797SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
6014f5eb797SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE;
6024f5eb797SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
6034f5eb797SMilanka Ringwald                             offset += 2;
6044f5eb797SMilanka Ringwald                             event[offset++] = ctype;
6054f5eb797SMilanka Ringwald                             event[offset++] = 0;
6064f5eb797SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset);
6074f5eb797SMilanka Ringwald                             break;
6084f5eb797SMilanka Ringwald 
6096983e65eSMilanka Ringwald                         case AVRCP_CAPABILITY_ID_EVENT:
6106983e65eSMilanka Ringwald                             for (i = 0; i < capability_count; i++){
6116983e65eSMilanka Ringwald                                 uint8_t event_id = packet[pos++];
6126983e65eSMilanka Ringwald                                 log_info("  0x%02x %s", event_id, avrcp_event2str(event_id));
6134f5eb797SMilanka Ringwald 
6144f5eb797SMilanka Ringwald                                 offset = 0;
6154f5eb797SMilanka Ringwald                                 event[offset++] = HCI_EVENT_AVRCP_META;
6164f5eb797SMilanka Ringwald                                 event[offset++] = sizeof(event) - 2;
6174f5eb797SMilanka Ringwald                                 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID;
6184f5eb797SMilanka Ringwald                                 little_endian_store_16(event, offset, connection->avrcp_cid);
6194f5eb797SMilanka Ringwald                                 offset += 2;
6204f5eb797SMilanka Ringwald                                 event[offset++] = ctype;
6214f5eb797SMilanka Ringwald                                 event[offset++] = 0;
6224f5eb797SMilanka Ringwald                                 event[offset++] = event_id;
6234f5eb797SMilanka Ringwald                                 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset);
6246983e65eSMilanka Ringwald                             }
6254f5eb797SMilanka Ringwald 
6264f5eb797SMilanka Ringwald                             offset = 0;
6274f5eb797SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
6284f5eb797SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
6294f5eb797SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE;
6304f5eb797SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
6314f5eb797SMilanka Ringwald                             offset += 2;
6324f5eb797SMilanka Ringwald                             event[offset++] = ctype;
6334f5eb797SMilanka Ringwald                             event[offset++] = 0;
6344f5eb797SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
6356983e65eSMilanka Ringwald                             break;
6366983e65eSMilanka Ringwald                     }
6376983e65eSMilanka Ringwald                     break;
6386983e65eSMilanka Ringwald                 }
6396983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_GET_PLAY_STATUS:{
6406983e65eSMilanka Ringwald                     uint32_t song_length = big_endian_read_32(packet, pos);
6416983e65eSMilanka Ringwald                     pos += 4;
6426983e65eSMilanka Ringwald                     uint32_t song_position = big_endian_read_32(packet, pos);
6436983e65eSMilanka Ringwald                     pos += 4;
6446983e65eSMilanka Ringwald                     uint8_t play_status = packet[pos];
6456983e65eSMilanka Ringwald 
6466983e65eSMilanka Ringwald                     uint8_t event[15];
6476983e65eSMilanka Ringwald                     int offset = 0;
6486983e65eSMilanka Ringwald                     event[offset++] = HCI_EVENT_AVRCP_META;
6496983e65eSMilanka Ringwald                     event[offset++] = sizeof(event) - 2;
6506983e65eSMilanka Ringwald                     event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS;
6516983e65eSMilanka Ringwald                     little_endian_store_16(event, offset, connection->avrcp_cid);
6526983e65eSMilanka Ringwald                     offset += 2;
6536983e65eSMilanka Ringwald                     event[offset++] = ctype;
6546983e65eSMilanka Ringwald                     little_endian_store_32(event, offset, song_length);
6556983e65eSMilanka Ringwald                     offset += 4;
6566983e65eSMilanka Ringwald                     little_endian_store_32(event, offset, song_position);
6576983e65eSMilanka Ringwald                     offset += 4;
6586983e65eSMilanka Ringwald                     event[offset++] = play_status;
6596983e65eSMilanka Ringwald                     (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
6606983e65eSMilanka Ringwald                     break;
6616983e65eSMilanka Ringwald                 }
6626983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_REGISTER_NOTIFICATION:{
6636983e65eSMilanka Ringwald                     avrcp_notification_event_id_t  event_id = (avrcp_notification_event_id_t) packet[pos++];
6646983e65eSMilanka Ringwald                     uint16_t event_mask = (1 << event_id);
6656983e65eSMilanka Ringwald                     uint16_t reset_event_mask = ~event_mask;
6666983e65eSMilanka Ringwald                     switch (ctype){
6676983e65eSMilanka Ringwald                         case AVRCP_CTYPE_RESPONSE_INTERIM:
6686983e65eSMilanka Ringwald                             // register as enabled
6696983e65eSMilanka Ringwald                             connection->notifications_enabled |= event_mask;
6706983e65eSMilanka Ringwald                             break;
6716983e65eSMilanka Ringwald                         case AVRCP_CTYPE_RESPONSE_CHANGED_STABLE:
6726983e65eSMilanka Ringwald                             // received change, event is considered deregistered
6736983e65eSMilanka Ringwald                             // we are re-enabling it automatically, if it is not
6746983e65eSMilanka Ringwald                             // explicitly disabled
6756983e65eSMilanka Ringwald                             connection->notifications_enabled &= reset_event_mask;
6766983e65eSMilanka Ringwald                             if (! (connection->notifications_to_deregister & event_mask)){
6776983e65eSMilanka Ringwald                                 avrcp_register_notification(connection, event_id);
6786983e65eSMilanka Ringwald                             } else {
6796983e65eSMilanka Ringwald                                 connection->notifications_to_deregister &= reset_event_mask;
6806983e65eSMilanka Ringwald                             }
6816983e65eSMilanka Ringwald                             break;
6826983e65eSMilanka Ringwald                         default:
6836983e65eSMilanka Ringwald                             connection->notifications_to_register &= reset_event_mask;
6846983e65eSMilanka Ringwald                             connection->notifications_enabled &= reset_event_mask;
6856983e65eSMilanka Ringwald                             connection->notifications_to_deregister &= reset_event_mask;
6866983e65eSMilanka Ringwald                             break;
6876983e65eSMilanka Ringwald                     }
6886983e65eSMilanka Ringwald 
6896983e65eSMilanka Ringwald                     switch (event_id){
6906fa3dbf2SMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{
6916fa3dbf2SMilanka Ringwald                             uint32_t song_position = big_endian_read_32(packet, pos);
6926fa3dbf2SMilanka Ringwald                             uint8_t event[10];
6936fa3dbf2SMilanka Ringwald                             int offset = 0;
6946fa3dbf2SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
6956fa3dbf2SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
6966fa3dbf2SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED;
6976fa3dbf2SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
6986fa3dbf2SMilanka Ringwald                             offset += 2;
6996fa3dbf2SMilanka Ringwald                             event[offset++] = ctype;
7006fa3dbf2SMilanka Ringwald                             little_endian_store_32(event, offset, song_position);
7016fa3dbf2SMilanka Ringwald                             offset += 4;
7026fa3dbf2SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
7036fa3dbf2SMilanka Ringwald                             break;
7046fa3dbf2SMilanka Ringwald                         }
7056983e65eSMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{
7066983e65eSMilanka Ringwald                             uint8_t event[7];
7076983e65eSMilanka Ringwald                             int offset = 0;
7086983e65eSMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
7096983e65eSMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
7106983e65eSMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED;
7116983e65eSMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
7126983e65eSMilanka Ringwald                             offset += 2;
7136983e65eSMilanka Ringwald                             event[offset++] = ctype;
7146983e65eSMilanka Ringwald                             event[offset++] = packet[pos];
7156983e65eSMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
7166983e65eSMilanka Ringwald                             break;
7176983e65eSMilanka Ringwald                         }
7186983e65eSMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{
7196983e65eSMilanka Ringwald                             uint8_t event[6];
7206983e65eSMilanka Ringwald                             int offset = 0;
7216983e65eSMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
7226983e65eSMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
7236983e65eSMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED;
7246983e65eSMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
7256983e65eSMilanka Ringwald                             offset += 2;
7266983e65eSMilanka Ringwald                             event[offset++] = ctype;
7276983e65eSMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
7286983e65eSMilanka Ringwald                             break;
7296983e65eSMilanka Ringwald                         }
7306983e65eSMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{
7316983e65eSMilanka Ringwald                             uint8_t event[6];
7326983e65eSMilanka Ringwald                             int offset = 0;
7336983e65eSMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
7346983e65eSMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
7356983e65eSMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED;
7366983e65eSMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
7376983e65eSMilanka Ringwald                             offset += 2;
7386983e65eSMilanka Ringwald                             event[offset++] = ctype;
7396983e65eSMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
7406983e65eSMilanka Ringwald                             break;
7416983e65eSMilanka Ringwald                         }
7426983e65eSMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{
7436983e65eSMilanka Ringwald                             uint8_t event[6];
7446983e65eSMilanka Ringwald                             int offset = 0;
7456983e65eSMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
7466983e65eSMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
7476983e65eSMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED;
7486983e65eSMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
7496983e65eSMilanka Ringwald                             offset += 2;
7506983e65eSMilanka Ringwald                             event[offset++] = ctype;
7516983e65eSMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
7526983e65eSMilanka Ringwald                             break;
7536983e65eSMilanka Ringwald                         }
7546983e65eSMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{
7556983e65eSMilanka Ringwald                             uint8_t event[7];
7566983e65eSMilanka Ringwald                             int offset = 0;
7576983e65eSMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
7586983e65eSMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
7596983e65eSMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED;
7606983e65eSMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
7616983e65eSMilanka Ringwald                             offset += 2;
7626983e65eSMilanka Ringwald                             event[offset++] = ctype;
7636983e65eSMilanka Ringwald                             event[offset++] = packet[pos++] & 0x7F;
7646983e65eSMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
7656983e65eSMilanka Ringwald                             break;
7666983e65eSMilanka Ringwald                         }
7674614c049SMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{
768e7e98b60SMilanka Ringwald                             uint8_t event[8];
769e7e98b60SMilanka Ringwald                             uint16_t uuid = big_endian_read_16(packet, pos);
7704614c049SMilanka Ringwald                             int offset = 0;
7714614c049SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
7724614c049SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
773e7e98b60SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED;
7744614c049SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
7754614c049SMilanka Ringwald                             offset += 2;
7764614c049SMilanka Ringwald                             event[offset++] = ctype;
777e7e98b60SMilanka Ringwald                             little_endian_store_16(event, offset, uuid);
778e7e98b60SMilanka Ringwald                             offset += 2;
7794614c049SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
7804614c049SMilanka Ringwald                             break;
7814614c049SMilanka Ringwald                         }
7824614c049SMilanka Ringwald 
783e7e98b60SMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{
784e7e98b60SMilanka Ringwald                             uint8_t event[6];
785e7e98b60SMilanka Ringwald                             int offset = 0;
786e7e98b60SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
787e7e98b60SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
788e7e98b60SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END;
789e7e98b60SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
790e7e98b60SMilanka Ringwald                             offset += 2;
791e7e98b60SMilanka Ringwald                             event[offset++] = ctype;
792e7e98b60SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
793e7e98b60SMilanka Ringwald                             break;
794e7e98b60SMilanka Ringwald                         }
795e7e98b60SMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{
796e7e98b60SMilanka Ringwald                             uint8_t event[6];
797e7e98b60SMilanka Ringwald                             int offset = 0;
798e7e98b60SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
799e7e98b60SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
800e7e98b60SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START;
801e7e98b60SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
802e7e98b60SMilanka Ringwald                             offset += 2;
803e7e98b60SMilanka Ringwald                             event[offset++] = ctype;
804e7e98b60SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
805e7e98b60SMilanka Ringwald                             break;
806e7e98b60SMilanka Ringwald                         }
807e7e98b60SMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{
808e7e98b60SMilanka Ringwald                             uint8_t event[7];
809e7e98b60SMilanka Ringwald                             int offset = 0;
810e7e98b60SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
811e7e98b60SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
812e7e98b60SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED;
813e7e98b60SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
814e7e98b60SMilanka Ringwald                             offset += 2;
815e7e98b60SMilanka Ringwald                             event[offset++] = ctype;
816e7e98b60SMilanka Ringwald                             event[offset++] = packet[pos++];
817e7e98b60SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
818e7e98b60SMilanka Ringwald                             break;
819e7e98b60SMilanka Ringwald                         }
820e7e98b60SMilanka Ringwald 
821e7e98b60SMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{
822e7e98b60SMilanka Ringwald                             uint8_t event[7];
823e7e98b60SMilanka Ringwald                             int offset = 0;
824e7e98b60SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
825e7e98b60SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
826e7e98b60SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED;
827e7e98b60SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
828e7e98b60SMilanka Ringwald                             offset += 2;
829e7e98b60SMilanka Ringwald                             event[offset++] = ctype;
830e7e98b60SMilanka Ringwald                             event[offset++] = packet[pos];
831e7e98b60SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
832e7e98b60SMilanka Ringwald                             break;
833e7e98b60SMilanka Ringwald                         }
834e7e98b60SMilanka Ringwald 
835e7e98b60SMilanka Ringwald                         case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED:
8366983e65eSMilanka Ringwald                         default:
8376983e65eSMilanka Ringwald                             log_info("avrcp: not implemented");
8386983e65eSMilanka Ringwald                             break;
8396983e65eSMilanka Ringwald                     }
8406983e65eSMilanka Ringwald                     if (connection->notifications_to_register != 0){
8416983e65eSMilanka Ringwald                         avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
8426983e65eSMilanka Ringwald                     }
8436983e65eSMilanka Ringwald                     break;
8446983e65eSMilanka Ringwald                 }
8456983e65eSMilanka Ringwald 
8466983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{
847dfbbc26bSMatthias Ringwald                     avrcp_packet_type_t packet_type = (avrcp_packet_type_t) (operands[4] & 0x03);
8481bf7a74fSMilanka Ringwald                     switch (packet_type){
8491bf7a74fSMilanka Ringwald                         case AVRCP_START_PACKET:
8501bf7a74fSMilanka Ringwald                         case AVRCP_SINGLE_PACKET:
8511bf7a74fSMilanka Ringwald                             avrcp_parser_reset(connection);
8521bf7a74fSMilanka Ringwald                             connection->list_size = param_length;
8531bf7a74fSMilanka Ringwald                             connection->num_attributes = packet[pos++];
8548b2b4034SMilanka Ringwald 
8551bf7a74fSMilanka Ringwald                             avrcp_source_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype);
8566983e65eSMilanka Ringwald 
8571bf7a74fSMilanka Ringwald                             if (packet_type == AVRCP_START_PACKET){
8581bf7a74fSMilanka Ringwald                                 avrcp_controller_request_continue_response(connection);
8596983e65eSMilanka Ringwald                             }
8606983e65eSMilanka Ringwald                             break;
8611bf7a74fSMilanka Ringwald                         case AVRCP_CONTINUE_PACKET:
8621bf7a74fSMilanka Ringwald                         case AVRCP_END_PACKET:
8638b2b4034SMilanka Ringwald                             connection->num_received_fragments++;
8648b2b4034SMilanka Ringwald                             if (connection->num_received_fragments < connection->max_num_fragments){
8651bf7a74fSMilanka Ringwald                                 avrcp_source_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype);
8668b2b4034SMilanka Ringwald                                 if (packet_type == AVRCP_CONTINUE_PACKET){
8678b2b4034SMilanka Ringwald                                     avrcp_controller_request_continue_response(connection);
8688b2b4034SMilanka Ringwald                                 }
8698b2b4034SMilanka Ringwald                             } else {
8708b2b4034SMilanka Ringwald                                 avrcp_controller_request_abort_continuation(connection);
8718b2b4034SMilanka Ringwald                                 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1);
8728b2b4034SMilanka Ringwald                                 avrcp_parser_reset(connection);
8738b2b4034SMilanka Ringwald                             }
8741bf7a74fSMilanka Ringwald                             break;
8751bf7a74fSMilanka Ringwald                     }
8766983e65eSMilanka Ringwald                 }
8776983e65eSMilanka Ringwald                 default:
8786983e65eSMilanka Ringwald                     break;
8796983e65eSMilanka Ringwald             }
8806983e65eSMilanka Ringwald             break;
8816983e65eSMilanka Ringwald         case AVRCP_CMD_OPCODE_PASS_THROUGH:{
8826983e65eSMilanka Ringwald             // 0x80 | connection->cmd_operands[0]
8836983e65eSMilanka Ringwald             uint8_t operation_id = packet[pos++];
8846983e65eSMilanka Ringwald             switch (connection->state){
8856983e65eSMilanka Ringwald                 case AVCTP_W2_RECEIVE_PRESS_RESPONSE:
8866983e65eSMilanka Ringwald                     if (connection->continuous_fast_forward_cmd){
8876983e65eSMilanka Ringwald                         connection->state = AVCTP_W4_STOP;
8886983e65eSMilanka Ringwald                     } else {
8896983e65eSMilanka Ringwald                         connection->state = AVCTP_W2_SEND_RELEASE_COMMAND;
8906983e65eSMilanka Ringwald                     }
8916983e65eSMilanka Ringwald                     break;
8926983e65eSMilanka Ringwald                 case AVCTP_W2_RECEIVE_RESPONSE:
8936983e65eSMilanka Ringwald                     connection->state = AVCTP_CONNECTION_OPENED;
8946983e65eSMilanka Ringwald                     break;
8956983e65eSMilanka Ringwald                 default:
8966983e65eSMilanka Ringwald                     break;
8976983e65eSMilanka Ringwald             }
8986983e65eSMilanka Ringwald             if (connection->state == AVCTP_W4_STOP){
8996983e65eSMilanka Ringwald                 avrcp_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id);
9006983e65eSMilanka Ringwald             }
9016983e65eSMilanka Ringwald             if (connection->state == AVCTP_CONNECTION_OPENED) {
9026983e65eSMilanka Ringwald                 // RELEASE response
9036983e65eSMilanka Ringwald                 operation_id = operation_id & 0x7F;
9046983e65eSMilanka Ringwald                 avrcp_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id);
9056983e65eSMilanka Ringwald             }
9066983e65eSMilanka Ringwald             if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){
9076983e65eSMilanka Ringwald                 // PRESS response
9086983e65eSMilanka Ringwald                 request_pass_through_release_control_cmd(connection);
9096983e65eSMilanka Ringwald             }
9106983e65eSMilanka Ringwald             break;
9116983e65eSMilanka Ringwald         }
9126983e65eSMilanka Ringwald         default:
9136983e65eSMilanka Ringwald             break;
9146983e65eSMilanka Ringwald     }
9152a7bb97aSMatthias Ringwald 
9162a7bb97aSMatthias Ringwald     // trigger pending notification reqistrations
9170e588213SMatthias Ringwald     if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->notifications_to_register){
9182a7bb97aSMatthias Ringwald         avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
9192a7bb97aSMatthias Ringwald     }
9206983e65eSMilanka Ringwald }
9216983e65eSMilanka Ringwald 
9226983e65eSMilanka Ringwald static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){
9236983e65eSMilanka Ringwald     int i;
9246983e65eSMilanka Ringwald     switch (connection->state){
9256983e65eSMilanka Ringwald         case AVCTP_W2_SEND_PRESS_COMMAND:
9266983e65eSMilanka Ringwald             connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE;
927c4b5c3d5SMatthias Ringwald             avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET);
9286983e65eSMilanka Ringwald             break;
9296983e65eSMilanka Ringwald         case AVCTP_W2_SEND_COMMAND:
9306983e65eSMilanka Ringwald         case AVCTP_W2_SEND_RELEASE_COMMAND:
9316983e65eSMilanka Ringwald             connection->state = AVCTP_W2_RECEIVE_RESPONSE;
932c4b5c3d5SMatthias Ringwald             avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET);
9336983e65eSMilanka Ringwald             break;
9346983e65eSMilanka Ringwald         case AVCTP_CONNECTION_OPENED:
9356983e65eSMilanka Ringwald             if (connection->notifications_to_register != 0){
9366983e65eSMilanka Ringwald                 for (i = 1; i <= AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED; i++){
9376983e65eSMilanka Ringwald                     if (connection->notifications_to_register & (1<<i)){
9386983e65eSMilanka Ringwald                         connection->notifications_to_register &= ~ (1 << i);
9396983e65eSMilanka Ringwald                         avrcp_prepare_notification(connection, (avrcp_notification_event_id_t) i);
9406983e65eSMilanka Ringwald                         connection->state = AVCTP_W2_RECEIVE_RESPONSE;
941c4b5c3d5SMatthias Ringwald                         avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET);
9426983e65eSMilanka Ringwald                         return;
9436983e65eSMilanka Ringwald                     }
9446983e65eSMilanka Ringwald                 }
9456983e65eSMilanka Ringwald             }
9466983e65eSMilanka Ringwald             return;
947c4b5c3d5SMatthias Ringwald         case AVCTP_W2_SEND_FRAGMENTED_COMMAND:
948c4b5c3d5SMatthias Ringwald             if (connection->cmd_operands_fragmented_pos == 0){
949c4b5c3d5SMatthias Ringwald                  avrcp_send_cmd(connection, AVRCP_START_PACKET);
950c4b5c3d5SMatthias Ringwald                  avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
951c4b5c3d5SMatthias Ringwald             } else {
952c1ab6cc1SMatthias Ringwald                 if ((connection->cmd_operands_fragmented_len - connection->cmd_operands_fragmented_pos) > avrcp_get_max_payload_size_for_packet_type(AVRCP_CONTINUE_PACKET)){
953c4b5c3d5SMatthias Ringwald                      avrcp_send_cmd(connection, AVRCP_CONTINUE_PACKET);
954c4b5c3d5SMatthias Ringwald                      avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
955c4b5c3d5SMatthias Ringwald                  } else {
956c4b5c3d5SMatthias Ringwald                     connection->state = AVCTP_W2_RECEIVE_RESPONSE;
957c4b5c3d5SMatthias Ringwald                     avrcp_send_cmd(connection, AVRCP_END_PACKET);
958c4b5c3d5SMatthias Ringwald                  }
959c4b5c3d5SMatthias Ringwald             }
9606983e65eSMilanka Ringwald         default:
9616983e65eSMilanka Ringwald             return;
9626983e65eSMilanka Ringwald     }
9636983e65eSMilanka Ringwald }
9646983e65eSMilanka Ringwald 
9656983e65eSMilanka Ringwald static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
9666983e65eSMilanka Ringwald     avrcp_connection_t * connection;
9676983e65eSMilanka Ringwald 
9686983e65eSMilanka Ringwald     switch (packet_type) {
9696983e65eSMilanka Ringwald         case L2CAP_DATA_PACKET:
9701945fe3eSMilanka Ringwald             connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel);
9716983e65eSMilanka Ringwald             avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size);
9726983e65eSMilanka Ringwald             break;
9730036e267SMilanka Ringwald 
9746983e65eSMilanka Ringwald         case HCI_EVENT_PACKET:
9756983e65eSMilanka Ringwald             switch (hci_event_packet_get_type(packet)){
9766983e65eSMilanka Ringwald                 case L2CAP_EVENT_CAN_SEND_NOW:
9771945fe3eSMilanka Ringwald                     connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel);
9786983e65eSMilanka Ringwald                     avrcp_controller_handle_can_send_now(connection);
9796983e65eSMilanka Ringwald                     break;
9806983e65eSMilanka Ringwald             default:
9816983e65eSMilanka Ringwald                 break;
9826983e65eSMilanka Ringwald         }
9836983e65eSMilanka Ringwald         default:
9846983e65eSMilanka Ringwald             break;
9856983e65eSMilanka Ringwald     }
9866983e65eSMilanka Ringwald }
9876983e65eSMilanka Ringwald 
9886983e65eSMilanka Ringwald void avrcp_controller_init(void){
9896983e65eSMilanka Ringwald     avrcp_controller_context.role = AVRCP_CONTROLLER;
9906983e65eSMilanka Ringwald     avrcp_controller_context.packet_handler = avrcp_controller_packet_handler;
991b106f728SMilanka Ringwald     avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler);
9926983e65eSMilanka Ringwald }
9936983e65eSMilanka Ringwald 
9946983e65eSMilanka Ringwald void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){
995be4cc80aSMilanka Ringwald     btstack_assert(callback != NULL);
9966983e65eSMilanka Ringwald     avrcp_controller_context.avrcp_callback = callback;
9976983e65eSMilanka Ringwald }
9986983e65eSMilanka Ringwald 
9996983e65eSMilanka Ringwald uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){
10001945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
10016983e65eSMilanka Ringwald     if (!connection){
10026983e65eSMilanka Ringwald         log_error("avrcp_unit_info: could not find a connection.");
10036983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
10046983e65eSMilanka Ringwald     }
10056983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
10066983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
10076983e65eSMilanka Ringwald 
10086983e65eSMilanka Ringwald     connection->transaction_label++;
10096983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_UNIT_INFO;
10106983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
10116983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique
10126983e65eSMilanka Ringwald     connection->subunit_id =   AVRCP_SUBUNIT_ID_IGNORE;
10136983e65eSMilanka Ringwald     memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length);
10146983e65eSMilanka Ringwald     connection->cmd_operands_length = 5;
10156983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
10166983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
10176983e65eSMilanka Ringwald }
10186983e65eSMilanka Ringwald 
1019ad75da14SMilanka Ringwald uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){
10201945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1021ad75da14SMilanka Ringwald     if (!connection){
1022ad75da14SMilanka Ringwald         log_error("avrcp_unit_info: could not find a connection.");
1023ad75da14SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1024ad75da14SMilanka Ringwald     }
1025ad75da14SMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
1026ad75da14SMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
1027ad75da14SMilanka Ringwald 
1028ad75da14SMilanka Ringwald     connection->transaction_label++;
1029ad75da14SMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_SUBUNIT_INFO;
1030ad75da14SMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
1031ad75da14SMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique
1032ad75da14SMilanka Ringwald     connection->subunit_id =   AVRCP_SUBUNIT_ID_IGNORE;
1033ad75da14SMilanka Ringwald     memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length);
1034ad75da14SMilanka Ringwald     connection->cmd_operands[0] = 7; // page: 0, extention_code: 7
1035ad75da14SMilanka Ringwald     connection->cmd_operands_length = 5;
1036ad75da14SMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1037ad75da14SMilanka Ringwald     return ERROR_CODE_SUCCESS;
1038ad75da14SMilanka Ringwald }
1039ad75da14SMilanka Ringwald 
10406983e65eSMilanka Ringwald static uint8_t avrcp_controller_get_capabilities(uint16_t avrcp_cid, uint8_t capability_id){
10411945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
10426983e65eSMilanka Ringwald     if (!connection){
10436983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
10446983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
10456983e65eSMilanka Ringwald     }
10466983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
10476983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
10486983e65eSMilanka Ringwald 
10496983e65eSMilanka Ringwald     connection->transaction_label++;
10506983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
10516983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
10526983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
10536983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
10546983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
10556983e65eSMilanka Ringwald     connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CAPABILITIES; // PDU ID
10566983e65eSMilanka Ringwald     connection->cmd_operands[4] = 0;
10576983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, 5, 1); // parameter length
10586983e65eSMilanka Ringwald     connection->cmd_operands[7] = capability_id;                  // capability ID
10596983e65eSMilanka Ringwald     connection->cmd_operands_length = 8;
10606983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
10616983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
10626983e65eSMilanka Ringwald }
10636983e65eSMilanka Ringwald 
10646983e65eSMilanka Ringwald uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){
10656983e65eSMilanka Ringwald     return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_COMPANY);
10666983e65eSMilanka Ringwald }
10676983e65eSMilanka Ringwald 
10686983e65eSMilanka Ringwald uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){
10696983e65eSMilanka Ringwald     return avrcp_controller_get_capabilities(avrcp_cid, AVRCP_CAPABILITY_ID_EVENT);
10706983e65eSMilanka Ringwald }
10716983e65eSMilanka Ringwald 
10726983e65eSMilanka Ringwald 
10736983e65eSMilanka Ringwald uint8_t avrcp_controller_play(uint16_t avrcp_cid){
10746983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0);
10756983e65eSMilanka Ringwald }
10766983e65eSMilanka Ringwald 
10776983e65eSMilanka Ringwald uint8_t avrcp_controller_stop(uint16_t avrcp_cid){
10786983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0);
10796983e65eSMilanka Ringwald }
10806983e65eSMilanka Ringwald 
10816983e65eSMilanka Ringwald uint8_t avrcp_controller_pause(uint16_t avrcp_cid){
10826983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0);
10836983e65eSMilanka Ringwald }
10846983e65eSMilanka Ringwald 
10856983e65eSMilanka Ringwald uint8_t avrcp_controller_forward(uint16_t avrcp_cid){
10866983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0);
10876983e65eSMilanka Ringwald }
10886983e65eSMilanka Ringwald 
10896983e65eSMilanka Ringwald uint8_t avrcp_controller_backward(uint16_t avrcp_cid){
10906983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0);
10916983e65eSMilanka Ringwald }
10926983e65eSMilanka Ringwald 
10936983e65eSMilanka Ringwald uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){
10946983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0);
10956983e65eSMilanka Ringwald }
10966983e65eSMilanka Ringwald 
10976983e65eSMilanka Ringwald uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){
10986983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0);
10996983e65eSMilanka Ringwald }
11006983e65eSMilanka Ringwald 
11016983e65eSMilanka Ringwald uint8_t avrcp_controller_mute(uint16_t avrcp_cid){
11026983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0);
11036983e65eSMilanka Ringwald }
11046983e65eSMilanka Ringwald 
11056983e65eSMilanka Ringwald uint8_t avrcp_controller_skip(uint16_t avrcp_cid){
11066983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0);
11076983e65eSMilanka Ringwald }
11086983e65eSMilanka Ringwald 
11096983e65eSMilanka Ringwald uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){
11106983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0);
11116983e65eSMilanka Ringwald }
11126983e65eSMilanka Ringwald 
11136983e65eSMilanka Ringwald uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){
11146983e65eSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0);
11156983e65eSMilanka Ringwald }
11166983e65eSMilanka Ringwald 
11176983e65eSMilanka Ringwald 
11188c79e168SMilanka Ringwald /* start cmds */
11198c79e168SMilanka Ringwald 
11208c79e168SMilanka Ringwald uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){
11211945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
11226983e65eSMilanka Ringwald     if (!connection){
11238c79e168SMilanka Ringwald         log_error("avrcp_stop_play: could not find a connection.");
11246983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
11256983e65eSMilanka Ringwald     }
11266983e65eSMilanka Ringwald     if (connection->state != AVCTP_W4_STOP) return ERROR_CODE_COMMAND_DISALLOWED;
11276983e65eSMilanka Ringwald     return request_pass_through_release_control_cmd(connection);
11286983e65eSMilanka Ringwald }
11296983e65eSMilanka Ringwald 
11308c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){
11318c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0);
11328c79e168SMilanka Ringwald }
11338c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){
11348c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0);
11358c79e168SMilanka Ringwald }
11368c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){
11378c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0);
11388c79e168SMilanka Ringwald }
11398c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){
11408c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0);
11418c79e168SMilanka Ringwald }
11428c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){
11438c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0);
11448c79e168SMilanka Ringwald }
11458c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){
11468c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0);
11478c79e168SMilanka Ringwald }
11488c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){
11498c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0);
11508c79e168SMilanka Ringwald }
11518c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){
11528c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0);
11538c79e168SMilanka Ringwald }
11548c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){
11558c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0);
11568c79e168SMilanka Ringwald }
11578c79e168SMilanka Ringwald uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){
11588c79e168SMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0);
11598c79e168SMilanka Ringwald }
11608c79e168SMilanka Ringwald 
11618c79e168SMilanka Ringwald 
11628c79e168SMilanka Ringwald /* stop continuous cmds */
11638c79e168SMilanka Ringwald 
11646983e65eSMilanka Ringwald uint8_t avrcp_controller_get_play_status(uint16_t avrcp_cid){
11651945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
11666983e65eSMilanka Ringwald     if (!connection){
11676983e65eSMilanka Ringwald         log_error("avrcp_get_play_status: could not find a connection.");
11686983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
11696983e65eSMilanka Ringwald     }
11706983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
11716983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
11726983e65eSMilanka Ringwald     connection->transaction_label++;
11736983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
11746983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
11756983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
11766983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
11776983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
11786983e65eSMilanka Ringwald     connection->cmd_operands[3] = AVRCP_PDU_ID_GET_PLAY_STATUS;
11796983e65eSMilanka Ringwald     connection->cmd_operands[4] = 0;                     // reserved(upper 6) | packet_type -> 0
11806983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, 5, 0); // parameter length
11816983e65eSMilanka Ringwald     connection->cmd_operands_length = 7;
11826983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
11836983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
11846983e65eSMilanka Ringwald }
11856983e65eSMilanka Ringwald 
11866983e65eSMilanka Ringwald uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){
11871945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
11886983e65eSMilanka Ringwald     if (!connection){
11896983e65eSMilanka Ringwald         log_error("avrcp_get_play_status: could not find a connection.");
11906983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
11916983e65eSMilanka Ringwald     }
11926983e65eSMilanka Ringwald     avrcp_register_notification(connection, event_id);
11936983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
11946983e65eSMilanka Ringwald }
11956983e65eSMilanka Ringwald 
11966983e65eSMilanka Ringwald uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){
11971945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
11986983e65eSMilanka Ringwald     if (!connection){
11996983e65eSMilanka Ringwald         log_error("avrcp_get_play_status: could not find a connection.");
12006983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
12016983e65eSMilanka Ringwald     }
12026983e65eSMilanka Ringwald     connection->notifications_to_deregister |= (1 << event_id);
12036983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
12046983e65eSMilanka Ringwald }
12056983e65eSMilanka Ringwald 
1206864d08b0SMilanka Ringwald uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){
12071945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1208864d08b0SMilanka Ringwald     if (!connection){
1209864d08b0SMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
1210864d08b0SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1211864d08b0SMilanka Ringwald     }
1212864d08b0SMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
1213864d08b0SMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
1214864d08b0SMilanka Ringwald 
1215864d08b0SMilanka Ringwald     connection->transaction_label++;
1216864d08b0SMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
1217864d08b0SMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
1218864d08b0SMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
1219864d08b0SMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
1220864d08b0SMilanka Ringwald     int pos = 0;
1221864d08b0SMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
1222864d08b0SMilanka Ringwald     pos += 3;
1223864d08b0SMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ADDRESSED_PLAYER; // PDU ID
1224864d08b0SMilanka Ringwald     connection->cmd_operands[pos++] = 0;
1225864d08b0SMilanka Ringwald 
1226864d08b0SMilanka Ringwald     // Parameter Length
1227864d08b0SMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 2);
1228864d08b0SMilanka Ringwald     pos += 2;
1229864d08b0SMilanka Ringwald 
1230864d08b0SMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, addressed_player_id);
1231864d08b0SMilanka Ringwald     pos += 2;
1232864d08b0SMilanka Ringwald 
1233864d08b0SMilanka Ringwald     connection->cmd_operands_length = pos;
1234864d08b0SMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1235864d08b0SMilanka Ringwald     return ERROR_CODE_SUCCESS;
1236864d08b0SMilanka Ringwald }
12371bf7a74fSMilanka Ringwald 
12386983e65eSMilanka Ringwald uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){
12391945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
12406983e65eSMilanka Ringwald     if (!connection){
12416983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
12426983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
12436983e65eSMilanka Ringwald     }
12446983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
12456983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
12466983e65eSMilanka Ringwald 
12476983e65eSMilanka Ringwald     connection->transaction_label++;
12486983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
12496983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
12506983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
12516983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
12526983e65eSMilanka Ringwald     int pos = 0;
12536983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
12546983e65eSMilanka Ringwald     pos += 3;
12556983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; // PDU ID
12566983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
12576983e65eSMilanka Ringwald 
12586983e65eSMilanka Ringwald     // Parameter Length
12596983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 9);
12606983e65eSMilanka Ringwald     pos += 2;
12616983e65eSMilanka Ringwald 
12626983e65eSMilanka Ringwald     // write 8 bytes value
12636983e65eSMilanka Ringwald     memset(connection->cmd_operands + pos, 0, 8); // identifier: PLAYING
12646983e65eSMilanka Ringwald     pos += 8;
12656983e65eSMilanka Ringwald 
12666983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 0; // attribute count, if 0 get all attributes
12676983e65eSMilanka Ringwald     // every attribute is 4 bytes long
12686983e65eSMilanka Ringwald 
12696983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
12706983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
12716983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
12726983e65eSMilanka Ringwald }
12736983e65eSMilanka Ringwald 
12746983e65eSMilanka Ringwald uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){
12751945fe3eSMilanka Ringwald      avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
12766983e65eSMilanka Ringwald     if (!connection){
12776983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
12786983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
12796983e65eSMilanka Ringwald     }
12806983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
12816983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
12826983e65eSMilanka Ringwald 
12836983e65eSMilanka Ringwald     connection->transaction_label++;
12846983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
12856983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
12866983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
12876983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
12886983e65eSMilanka Ringwald     int pos = 0;
12896983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
12906983e65eSMilanka Ringwald     pos += 3;
12916983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME; // PDU ID
12926983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
12936983e65eSMilanka Ringwald 
12946983e65eSMilanka Ringwald     // Parameter Length
12956983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 1);
12966983e65eSMilanka Ringwald     pos += 2;
12976983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = volume;
12986983e65eSMilanka Ringwald 
12996983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
13006983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
13016983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
13026983e65eSMilanka Ringwald }
13036983e65eSMilanka Ringwald 
13046983e65eSMilanka Ringwald uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){
13051945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
13066983e65eSMilanka Ringwald     if (!connection){
13076983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
13086983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
13096983e65eSMilanka Ringwald     }
13106983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
13116983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
13126983e65eSMilanka Ringwald 
13136983e65eSMilanka Ringwald     connection->transaction_label++;
13146983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
13156983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
13166983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
13176983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
13186983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
131908485fc4SMilanka Ringwald     connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID
13206983e65eSMilanka Ringwald     connection->cmd_operands[4] = 0;
13216983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, 5, 5); // parameter length
13226983e65eSMilanka Ringwald     connection->cmd_operands[7] = 4;                     // NumPlayerApplicationSettingAttributeID
13236983e65eSMilanka Ringwald     // PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133
13246983e65eSMilanka Ringwald     connection->cmd_operands[8]  = 0x01;    // equalizer  (1-OFF, 2-ON)
13256983e65eSMilanka Ringwald     connection->cmd_operands[9]  = 0x02;    // repeat     (1-off, 2-single track, 3-all tracks, 4-group repeat)
13266983e65eSMilanka Ringwald     connection->cmd_operands[10] = 0x03;    // shuffle    (1-off, 2-all tracks, 3-group shuffle)
13276983e65eSMilanka Ringwald     connection->cmd_operands[11] = 0x04;    // scan       (1-off, 2-all tracks, 3-group scan)
13286983e65eSMilanka Ringwald     connection->cmd_operands_length = 12;
13296983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
13306983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
13316983e65eSMilanka Ringwald }
13326983e65eSMilanka Ringwald 
13336983e65eSMilanka Ringwald static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){
13341945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
13356983e65eSMilanka Ringwald     if (!connection){
13366983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
13376983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
13386983e65eSMilanka Ringwald     }
13396983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
13406983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
13416983e65eSMilanka Ringwald 
13426983e65eSMilanka Ringwald     connection->transaction_label++;
13436983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
13446983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
13456983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
13466983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
13476983e65eSMilanka Ringwald     int pos = 0;
13486983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
13496983e65eSMilanka Ringwald     pos += 3;
135008485fc4SMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID
13516983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
13526983e65eSMilanka Ringwald     // Parameter Length
13536983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 3);
13546983e65eSMilanka Ringwald     pos += 2;
13556983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 2;
13566983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
13576983e65eSMilanka Ringwald     connection->cmd_operands[pos++]  = attr_id;
13586983e65eSMilanka Ringwald     connection->cmd_operands[pos++]  = attr_value;
13596983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
13606983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
13616983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
13626983e65eSMilanka Ringwald }
13636983e65eSMilanka Ringwald 
13646983e65eSMilanka Ringwald uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){
13650e588213SMatthias Ringwald     if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
13666983e65eSMilanka Ringwald     return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode);
13676983e65eSMilanka Ringwald }
13686983e65eSMilanka Ringwald 
13696983e65eSMilanka Ringwald uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){
13700e588213SMatthias Ringwald     if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
13716983e65eSMilanka Ringwald     return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode);
13726983e65eSMilanka Ringwald }
13736983e65eSMilanka Ringwald 
13744614c049SMilanka Ringwald uint8_t avrcp_controller_play_item_for_scope(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){
13751945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1376be65baf4SMilanka Ringwald     if (!connection){
13774931e24aSMilanka Ringwald         log_error("Could not find a connection with cid 0%02x.", avrcp_cid);
1378be65baf4SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1379be65baf4SMilanka Ringwald     }
13804931e24aSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED){
13814931e24aSMilanka Ringwald         log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state);
13824931e24aSMilanka Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
13834931e24aSMilanka Ringwald     }
1384be65baf4SMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
1385be65baf4SMilanka Ringwald 
1386be65baf4SMilanka Ringwald     connection->transaction_label++;
1387be65baf4SMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
1388be65baf4SMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
1389be65baf4SMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
1390be65baf4SMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
1391be65baf4SMilanka Ringwald     int pos = 0;
1392be65baf4SMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
1393be65baf4SMilanka Ringwald     pos += 3;
1394be65baf4SMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_PLAY_ITEM; // PDU ID
1395be65baf4SMilanka Ringwald     // reserved
1396be65baf4SMilanka Ringwald     connection->cmd_operands[pos++] = 0;
1397be65baf4SMilanka Ringwald     // Parameter Length
1398be65baf4SMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 11);
1399be65baf4SMilanka Ringwald     pos += 2;
1400be65baf4SMilanka Ringwald     connection->cmd_operands[pos++]  = scope;
1401be65baf4SMilanka Ringwald     memset(&connection->cmd_operands[pos], 0, 8);
1402be65baf4SMilanka Ringwald     if (uid){
14036535961aSMatthias Ringwald         (void)memcpy(&connection->cmd_operands[pos], uid, 8);
1404be65baf4SMilanka Ringwald     }
1405be65baf4SMilanka Ringwald     pos += 8;
1406be65baf4SMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, uid_counter);
1407be65baf4SMilanka Ringwald     pos += 2;
1408be65baf4SMilanka Ringwald     connection->cmd_operands_length = pos;
1409be65baf4SMilanka Ringwald 
1410be65baf4SMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1411be65baf4SMilanka Ringwald     return ERROR_CODE_SUCCESS;
1412be65baf4SMilanka Ringwald }
14138b2b4034SMilanka Ringwald 
14144931e24aSMilanka Ringwald 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){
14151945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
14164931e24aSMilanka Ringwald     if (!connection){
14174931e24aSMilanka Ringwald         log_error("Could not find a connection with cid 0%02x.", avrcp_cid);
14184931e24aSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
14194931e24aSMilanka Ringwald     }
14204931e24aSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED){
14214931e24aSMilanka Ringwald         log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state);
14224931e24aSMilanka Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
14234931e24aSMilanka Ringwald     }
14244931e24aSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
14254931e24aSMilanka Ringwald 
14264931e24aSMilanka Ringwald     connection->transaction_label++;
14274931e24aSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
14284931e24aSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
14294931e24aSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
14304931e24aSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
14314931e24aSMilanka Ringwald     int pos = 0;
14324931e24aSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
14334931e24aSMilanka Ringwald     pos += 3;
14347f803253SMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_ADD_TO_NOW_PLAYING; // PDU ID
14354931e24aSMilanka Ringwald     // reserved
14364931e24aSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
14374931e24aSMilanka Ringwald     // Parameter Length
14384931e24aSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 11);
14394931e24aSMilanka Ringwald     pos += 2;
14404931e24aSMilanka Ringwald     connection->cmd_operands[pos++]  = scope;
14414931e24aSMilanka Ringwald     memset(&connection->cmd_operands[pos], 0, 8);
14424931e24aSMilanka Ringwald     if (uid){
14436535961aSMatthias Ringwald         (void)memcpy(&connection->cmd_operands[pos], uid, 8);
14444931e24aSMilanka Ringwald     }
14454931e24aSMilanka Ringwald     pos += 8;
14464931e24aSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, uid_counter);
14474931e24aSMilanka Ringwald     pos += 2;
14484931e24aSMilanka Ringwald     connection->cmd_operands_length = pos;
14494931e24aSMilanka Ringwald 
14504931e24aSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
14514931e24aSMilanka Ringwald     return ERROR_CODE_SUCCESS;
14524931e24aSMilanka Ringwald }
14534931e24aSMilanka Ringwald 
14548b2b4034SMilanka Ringwald uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){
14551945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
14568b2b4034SMilanka Ringwald     if (!connection){
14578b2b4034SMilanka Ringwald         log_error("avrcp_controller_play_item: could not find a connection.");
14588b2b4034SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
14598b2b4034SMilanka Ringwald     }
14608b2b4034SMilanka Ringwald     connection->max_num_fragments = max_num_fragments;
14618b2b4034SMilanka Ringwald     return ERROR_CODE_SUCCESS;
14628b2b4034SMilanka Ringwald }
1463c4b5c3d5SMatthias Ringwald 
1464c4b5c3d5SMatthias Ringwald 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){
14651945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1466c4b5c3d5SMatthias Ringwald     if (!connection){
1467c4b5c3d5SMatthias Ringwald         log_error("avrcp_controller_play_item: could not find a connection.");
1468c4b5c3d5SMatthias Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1469c4b5c3d5SMatthias Ringwald     }
1470c4b5c3d5SMatthias Ringwald 
1471c4b5c3d5SMatthias Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
1472c4b5c3d5SMatthias Ringwald     connection->state = AVCTP_W2_SEND_FRAGMENTED_COMMAND;
1473c4b5c3d5SMatthias Ringwald 
1474c4b5c3d5SMatthias Ringwald     connection->transaction_label++;
1475c4b5c3d5SMatthias Ringwald     connection->command_opcode = command_opcode;
1476c4b5c3d5SMatthias Ringwald     connection->command_type = command_type;
1477c4b5c3d5SMatthias Ringwald     connection->subunit_type = subunit_type;
1478c4b5c3d5SMatthias Ringwald     connection->subunit_id = subunit_id;
1479c4b5c3d5SMatthias Ringwald     connection->cmd_operands_fragmented_buffer = command_buffer;
1480c4b5c3d5SMatthias Ringwald     connection->cmd_operands_fragmented_pos = 0;
1481c4b5c3d5SMatthias Ringwald     connection->cmd_operands_fragmented_len = command_len;
1482c4b5c3d5SMatthias Ringwald 
1483c4b5c3d5SMatthias Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1484c4b5c3d5SMatthias Ringwald     return ERROR_CODE_SUCCESS;
1485c4b5c3d5SMatthias Ringwald }
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