xref: /btstack/src/classic/avrcp_controller.c (revision 274ca16f8ecc1817b6b99b30a746954718287e0c)
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 "classic/avrcp.h"
456983e65eSMilanka Ringwald #include "classic/avrcp_controller.h"
466983e65eSMilanka Ringwald 
477c76cd61SMatthias Ringwald #include "bluetooth_sdp.h"
487c76cd61SMatthias Ringwald #include "btstack_debug.h"
497c76cd61SMatthias Ringwald #include "btstack_event.h"
507c76cd61SMatthias Ringwald #include "btstack_util.h"
517c76cd61SMatthias Ringwald #include "l2cap.h"
527c76cd61SMatthias Ringwald 
533d9ab93fSMilanka Ringwald #define AVRCP_CMD_BUFFER_SIZE 30
543d9ab93fSMilanka Ringwald 
554adb0765SMatthias Ringwald // made public in avrcp_controller.h
56e3d57ee2SMilanka Ringwald avrcp_context_t avrcp_controller_context;
579aa720b2SMilanka Ringwald 
586e7485d0SMilanka Ringwald static uint8_t avrcp_controller_calc_next_transaction_label(uint8_t current_transaction_label){
596e7485d0SMilanka Ringwald     current_transaction_label++;
606e7485d0SMilanka Ringwald     if (current_transaction_label == 16){
616e7485d0SMilanka Ringwald         current_transaction_label = 1;
629aa720b2SMilanka Ringwald     }
636e7485d0SMilanka Ringwald     return current_transaction_label;
646e7485d0SMilanka Ringwald }
656e7485d0SMilanka Ringwald 
666e7485d0SMilanka Ringwald static uint8_t avrcp_controller_get_next_transaction_label(avrcp_connection_t * connection){
676e7485d0SMilanka Ringwald     connection->transaction_id_counter = avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter);
6823773c45SMilanka Ringwald     return connection->transaction_id_counter;
699aa720b2SMilanka Ringwald }
704adb0765SMatthias Ringwald 
716e7485d0SMilanka Ringwald static bool avrcp_controller_is_transaction_id_valid(avrcp_connection_t * connection, uint8_t transaction_id){
726e7485d0SMilanka Ringwald     uint8_t delta = ((int8_t) transaction_id - connection->last_confirmed_transaction_id) & 0x0f;
736e7485d0SMilanka Ringwald     return delta < 15;
746e7485d0SMilanka Ringwald }
756e7485d0SMilanka Ringwald 
76c4b5c3d5SMatthias Ringwald static uint16_t avrcp_get_max_payload_size_for_packet_type(avrcp_packet_type_t packet_type){
77c4b5c3d5SMatthias Ringwald     switch (packet_type){
78c4b5c3d5SMatthias Ringwald         case AVRCP_SINGLE_PACKET:
79c4b5c3d5SMatthias Ringwald             return AVRCP_CMD_BUFFER_SIZE - 3;
80c4b5c3d5SMatthias Ringwald         case AVRCP_START_PACKET:
81c4b5c3d5SMatthias Ringwald             return AVRCP_CMD_BUFFER_SIZE - 4;
82c4b5c3d5SMatthias Ringwald         case AVRCP_CONTINUE_PACKET:
83c4b5c3d5SMatthias Ringwald         case AVRCP_END_PACKET:
84c4b5c3d5SMatthias Ringwald             return AVRCP_CMD_BUFFER_SIZE - 1;
857bbeb3adSMilanka Ringwald         default:
867bbeb3adSMilanka Ringwald             btstack_assert(false);
87ef004914SMatthias Ringwald             return 0;
88c4b5c3d5SMatthias Ringwald     }
897bbeb3adSMilanka Ringwald }
90c4b5c3d5SMatthias Ringwald 
913d9ab93fSMilanka Ringwald static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){
923d9ab93fSMilanka Ringwald     return controller_supported_features & AVRCP_FEATURE_MASK_BROWSING;
933d9ab93fSMilanka Ringwald }
943d9ab93fSMilanka Ringwald 
95bce3db21SMilanka Ringwald static void avrcp_controller_emit_notification_complete(avrcp_connection_t * connection, uint8_t status, uint8_t event_id){
96bce3db21SMilanka Ringwald     uint8_t event[7];
97bce3db21SMilanka Ringwald     uint8_t pos = 0;
98bce3db21SMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
99bce3db21SMilanka Ringwald     event[pos++] = sizeof(event) - 2;
100bce3db21SMilanka Ringwald     event[pos++] = AVRCP_SUBEVENT_ENABLE_NOTIFICATION_COMPLETE;
101bce3db21SMilanka Ringwald     little_endian_store_16(event, pos, connection->avrcp_cid);
102bce3db21SMilanka Ringwald     pos += 2;
103bce3db21SMilanka Ringwald     event[pos++] = status;
104bce3db21SMilanka Ringwald     event[pos++] = event_id;
105bce3db21SMilanka Ringwald     UNUSED(pos);
106bce3db21SMilanka Ringwald     (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
107bce3db21SMilanka Ringwald }
108bce3db21SMilanka Ringwald 
109ff243a1bSMilanka Ringwald static void avrcp_controller_emit_supported_events(avrcp_connection_t * connection){
110ff243a1bSMilanka Ringwald     uint8_t ctype = (uint8_t) AVRCP_CTYPE_RESPONSE_CHANGED_STABLE;
1112ac1dc76SMilanka Ringwald     uint8_t event_id;
112ff243a1bSMilanka Ringwald 
11399845bb7SMilanka Ringwald     for (event_id = (uint8_t) AVRCP_NOTIFICATION_EVENT_FIRST_INDEX; event_id < (uint8_t) AVRCP_NOTIFICATION_EVENT_LAST_INDEX; event_id++){
114ff243a1bSMilanka Ringwald         if ( (connection->remote_supported_notifications & (1<<event_id)) == 0){
115ff243a1bSMilanka Ringwald             continue;
116ff243a1bSMilanka Ringwald         }
1172ac1dc76SMilanka Ringwald         uint8_t event[8];
1182ac1dc76SMilanka Ringwald         uint8_t pos = 0;
1192ac1dc76SMilanka Ringwald         event[pos++] = HCI_EVENT_AVRCP_META;
1202ac1dc76SMilanka Ringwald         event[pos++] = sizeof(event) - 2;
1212ac1dc76SMilanka Ringwald         event[pos++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID;
1222ac1dc76SMilanka Ringwald         little_endian_store_16(event, pos, connection->avrcp_cid);
1232ac1dc76SMilanka Ringwald         pos += 2;
1242ac1dc76SMilanka Ringwald         event[pos++] = ctype;
1252ac1dc76SMilanka Ringwald         event[pos++] = 0;
1262ac1dc76SMilanka Ringwald         event[pos++] = event_id;
1272ac1dc76SMilanka Ringwald         UNUSED(pos);
1282ac1dc76SMilanka Ringwald         (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
129ff243a1bSMilanka Ringwald     }
130ff243a1bSMilanka Ringwald 
1312ac1dc76SMilanka Ringwald     uint8_t event[7];
1322ac1dc76SMilanka Ringwald     uint8_t pos = 0;
1332ac1dc76SMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
1342ac1dc76SMilanka Ringwald     event[pos++] = sizeof(event) - 2;
1352ac1dc76SMilanka Ringwald     event[pos++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE;
1362ac1dc76SMilanka Ringwald     little_endian_store_16(event, pos, connection->avrcp_cid);
1372ac1dc76SMilanka Ringwald     pos += 2;
1382ac1dc76SMilanka Ringwald     event[pos++] = ctype;
1392ac1dc76SMilanka Ringwald     event[pos++] = 0;
1402ac1dc76SMilanka Ringwald     UNUSED(pos);
141ff243a1bSMilanka Ringwald     (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
142ff243a1bSMilanka Ringwald }
143ff243a1bSMilanka Ringwald 
14499702381SMatthias Ringwald static void avrcp_controller_emit_notification_for_event_id(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id,
14599702381SMatthias Ringwald                                                             avrcp_command_type_t ctype, const uint8_t *payload,
14699702381SMatthias Ringwald                                                             uint16_t size) {
14716dc7cb4SMilanka Ringwald     switch (event_id){
14816dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{
14999702381SMatthias Ringwald             if (size < 4) break;
15016dc7cb4SMilanka Ringwald             uint32_t song_position = big_endian_read_32(payload, 0);
15116dc7cb4SMilanka Ringwald             uint16_t offset = 0;
15216dc7cb4SMilanka Ringwald             uint8_t event[10];
15316dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
15416dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
15516dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED;
15616dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
15716dc7cb4SMilanka Ringwald             offset += 2;
15816dc7cb4SMilanka Ringwald             event[offset++] = ctype;
15916dc7cb4SMilanka Ringwald             little_endian_store_32(event, offset, song_position);
16016dc7cb4SMilanka Ringwald             offset += 4;
16116dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
16216dc7cb4SMilanka Ringwald             break;
16316dc7cb4SMilanka Ringwald         }
16416dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{
16599702381SMatthias Ringwald             if (size < 1) break;
16616dc7cb4SMilanka Ringwald             uint16_t offset = 0;
16716dc7cb4SMilanka Ringwald             uint8_t event[7];
16816dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
16916dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
17016dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED;
17116dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
17216dc7cb4SMilanka Ringwald             offset += 2;
17316dc7cb4SMilanka Ringwald             event[offset++] = ctype;
17416dc7cb4SMilanka Ringwald             event[offset++] = payload[0];
17516dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
17616dc7cb4SMilanka Ringwald             break;
17716dc7cb4SMilanka Ringwald         }
17816dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{
17916dc7cb4SMilanka Ringwald             uint16_t offset = 0;
18016dc7cb4SMilanka Ringwald             uint8_t event[6];
18116dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
18216dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
18316dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED;
18416dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
18516dc7cb4SMilanka Ringwald             offset += 2;
18616dc7cb4SMilanka Ringwald             event[offset++] = ctype;
18716dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
18816dc7cb4SMilanka Ringwald             break;
18916dc7cb4SMilanka Ringwald         }
19016dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{
19116dc7cb4SMilanka Ringwald             uint16_t offset = 0;
19216dc7cb4SMilanka Ringwald             uint8_t event[6];
19316dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
19416dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
19516dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED;
19616dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
19716dc7cb4SMilanka Ringwald             offset += 2;
19816dc7cb4SMilanka Ringwald             event[offset++] = ctype;
19916dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
20016dc7cb4SMilanka Ringwald             break;
20116dc7cb4SMilanka Ringwald         }
20216dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{
20316dc7cb4SMilanka Ringwald             uint16_t offset = 0;
20416dc7cb4SMilanka Ringwald             uint8_t event[6];
20516dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
20616dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
20716dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED;
20816dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
20916dc7cb4SMilanka Ringwald             offset += 2;
21016dc7cb4SMilanka Ringwald             event[offset++] = ctype;
21116dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
21216dc7cb4SMilanka Ringwald             break;
21316dc7cb4SMilanka Ringwald         }
21416dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{
21599702381SMatthias Ringwald             if (size < 1) break;
21616dc7cb4SMilanka Ringwald             uint16_t offset = 0;
21716dc7cb4SMilanka Ringwald             uint8_t event[7];
21816dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
21916dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
22016dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED;
22116dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
22216dc7cb4SMilanka Ringwald             offset += 2;
22316dc7cb4SMilanka Ringwald             event[offset++] = ctype;
22416dc7cb4SMilanka Ringwald             event[offset++] = payload[0] & 0x7F;
22516dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
22616dc7cb4SMilanka Ringwald             break;
22716dc7cb4SMilanka Ringwald         }
22816dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{
22999702381SMatthias Ringwald             if (size < 2) break;
23016dc7cb4SMilanka Ringwald             uint8_t event[8];
23116dc7cb4SMilanka Ringwald             uint16_t offset = 0;
23216dc7cb4SMilanka Ringwald             uint16_t uuid = big_endian_read_16(payload, 0);
23316dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
23416dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
23516dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED;
23616dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
23716dc7cb4SMilanka Ringwald             offset += 2;
23816dc7cb4SMilanka Ringwald             event[offset++] = ctype;
23916dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, uuid);
24016dc7cb4SMilanka Ringwald             offset += 2;
24116dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
24216dc7cb4SMilanka Ringwald             break;
24316dc7cb4SMilanka Ringwald         }
24416dc7cb4SMilanka Ringwald 
24516dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{
24616dc7cb4SMilanka Ringwald             uint16_t offset = 0;
24716dc7cb4SMilanka Ringwald             uint8_t event[6];
24816dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
24916dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
25016dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END;
25116dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
25216dc7cb4SMilanka Ringwald             offset += 2;
25316dc7cb4SMilanka Ringwald             event[offset++] = ctype;
25416dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
25516dc7cb4SMilanka Ringwald             break;
25616dc7cb4SMilanka Ringwald         }
25716dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{
25816dc7cb4SMilanka Ringwald             uint16_t offset = 0;
25916dc7cb4SMilanka Ringwald             uint8_t event[6];
26016dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
26116dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
26216dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START;
26316dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
26416dc7cb4SMilanka Ringwald             offset += 2;
26516dc7cb4SMilanka Ringwald             event[offset++] = ctype;
26616dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
26716dc7cb4SMilanka Ringwald             break;
26816dc7cb4SMilanka Ringwald         }
26916dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{
27099702381SMatthias Ringwald             if (size < 1) break;
27116dc7cb4SMilanka Ringwald             uint16_t offset = 0;
27216dc7cb4SMilanka Ringwald             uint8_t event[7];
27316dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
27416dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
27516dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED;
27616dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
27716dc7cb4SMilanka Ringwald             offset += 2;
27816dc7cb4SMilanka Ringwald             event[offset++] = ctype;
27916dc7cb4SMilanka Ringwald             event[offset++] = payload[0];
28016dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
28116dc7cb4SMilanka Ringwald             break;
28216dc7cb4SMilanka Ringwald         }
28316dc7cb4SMilanka Ringwald 
28416dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{
28599702381SMatthias Ringwald             if (size < 1) break;
28616dc7cb4SMilanka Ringwald             uint16_t offset = 0;
28716dc7cb4SMilanka Ringwald             uint8_t event[7];
28816dc7cb4SMilanka Ringwald             event[offset++] = HCI_EVENT_AVRCP_META;
28916dc7cb4SMilanka Ringwald             event[offset++] = sizeof(event) - 2;
29016dc7cb4SMilanka Ringwald             event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED;
29116dc7cb4SMilanka Ringwald             little_endian_store_16(event, offset, avrcp_cid);
29216dc7cb4SMilanka Ringwald             offset += 2;
29316dc7cb4SMilanka Ringwald             event[offset++] = ctype;
29416dc7cb4SMilanka Ringwald             event[offset++] = payload[0];
29516dc7cb4SMilanka Ringwald             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
29616dc7cb4SMilanka Ringwald             break;
29716dc7cb4SMilanka Ringwald         }
29816dc7cb4SMilanka Ringwald 
29916dc7cb4SMilanka Ringwald         case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED:
30016dc7cb4SMilanka Ringwald         default:
30116dc7cb4SMilanka Ringwald             log_info("avrcp: not implemented");
30216dc7cb4SMilanka Ringwald             break;
30316dc7cb4SMilanka Ringwald     }
30416dc7cb4SMilanka Ringwald }
30516dc7cb4SMilanka Ringwald 
3063d9ab93fSMilanka Ringwald static void avrcp_controller_emit_repeat_and_shuffle_mode(btstack_packet_handler_t callback, uint16_t avrcp_cid, uint8_t ctype, avrcp_repeat_mode_t repeat_mode, avrcp_shuffle_mode_t shuffle_mode){
3073d9ab93fSMilanka Ringwald     btstack_assert(callback != NULL);
3083d9ab93fSMilanka Ringwald 
3093d9ab93fSMilanka Ringwald     uint8_t event[8];
3106983e65eSMilanka Ringwald     int pos = 0;
3113d9ab93fSMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
3123d9ab93fSMilanka Ringwald     event[pos++] = sizeof(event) - 2;
3133d9ab93fSMilanka Ringwald     event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE;
3143d9ab93fSMilanka Ringwald     little_endian_store_16(event, pos, avrcp_cid);
3156983e65eSMilanka Ringwald     pos += 2;
3163d9ab93fSMilanka Ringwald     event[pos++] = ctype;
3173d9ab93fSMilanka Ringwald     event[pos++] = repeat_mode;
3183d9ab93fSMilanka Ringwald     event[pos++] = shuffle_mode;
3193d9ab93fSMilanka Ringwald     (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
3201bf7a74fSMilanka Ringwald }
3211bf7a74fSMilanka Ringwald 
3221bf7a74fSMilanka 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){
3231bf7a74fSMilanka Ringwald     uint8_t event[7];
3241bf7a74fSMilanka Ringwald     int pos = 0;
3251bf7a74fSMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
3261bf7a74fSMilanka Ringwald     event[pos++] = sizeof(event) - 2;
3271bf7a74fSMilanka Ringwald     event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE;
3281bf7a74fSMilanka Ringwald     little_endian_store_16(event, pos, avrcp_cid);
3291bf7a74fSMilanka Ringwald     pos += 2;
3301bf7a74fSMilanka Ringwald     event[pos++] = ctype;
3311bf7a74fSMilanka Ringwald     event[pos++] = status;
3321bf7a74fSMilanka Ringwald     (*callback)(HCI_EVENT_PACKET, 0, event, pos);
3331bf7a74fSMilanka Ringwald }
3341bf7a74fSMilanka Ringwald 
3351bf7a74fSMilanka 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){
3361bf7a74fSMilanka Ringwald     uint8_t event[HCI_EVENT_BUFFER_SIZE];
3371bf7a74fSMilanka Ringwald     int pos = 0;
3381bf7a74fSMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
3391bf7a74fSMilanka Ringwald     // reserve one byte for subevent type and data len
3401bf7a74fSMilanka Ringwald     int data_len_pos = pos;
3411bf7a74fSMilanka Ringwald     pos++;
3421bf7a74fSMilanka Ringwald     int subevent_type_pos = pos;
3431bf7a74fSMilanka Ringwald     pos++;
3441bf7a74fSMilanka Ringwald     little_endian_store_16(event, pos, avrcp_cid);
3451bf7a74fSMilanka Ringwald     pos += 2;
3461bf7a74fSMilanka Ringwald     event[pos++] = ctype;
3471bf7a74fSMilanka Ringwald 
3481bf7a74fSMilanka Ringwald     switch (attr_id){
3491bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_TITLE:
3501bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO;
3511bf7a74fSMilanka Ringwald             event[pos++] = value_len;
3526535961aSMatthias Ringwald             (void)memcpy(event + pos, value, value_len);
3531bf7a74fSMilanka Ringwald             break;
3541bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_ARTIST:
3551bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO;
3561bf7a74fSMilanka Ringwald             event[pos++] = value_len;
3576535961aSMatthias Ringwald             (void)memcpy(event + pos, value, value_len);
3581bf7a74fSMilanka Ringwald             break;
3591bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_ALBUM:
3601bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO;
3611bf7a74fSMilanka Ringwald             event[pos++] = value_len;
3626535961aSMatthias Ringwald             (void)memcpy(event + pos, value, value_len);
3631bf7a74fSMilanka Ringwald             break;
3641bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_GENRE:
3651bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO;
3661bf7a74fSMilanka Ringwald             event[pos++] = value_len;
3676535961aSMatthias Ringwald             (void)memcpy(event + pos, value, value_len);
3681bf7a74fSMilanka Ringwald             break;
3692f511ffbSMilanka Ringwald         case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS:
3701bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO;
3711bf7a74fSMilanka Ringwald             if (value){
3721bf7a74fSMilanka Ringwald                 little_endian_store_32(event, pos, btstack_atoi((char *)value));
3731bf7a74fSMilanka Ringwald             } else {
3741bf7a74fSMilanka Ringwald                 little_endian_store_32(event, pos, 0);
3751bf7a74fSMilanka Ringwald             }
3761bf7a74fSMilanka Ringwald             pos += 4;
3771bf7a74fSMilanka Ringwald             break;
3781bf7a74fSMilanka Ringwald         case AVRCP_MEDIA_ATTR_TRACK:
3791bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO;
3801bf7a74fSMilanka Ringwald             if (value){
3811bf7a74fSMilanka Ringwald                 event[pos++] = btstack_atoi((char *)value);
3821bf7a74fSMilanka Ringwald             } else {
3831bf7a74fSMilanka Ringwald                 event[pos++] = 0;
3841bf7a74fSMilanka Ringwald             }
3851bf7a74fSMilanka Ringwald             break;
386864d08b0SMilanka Ringwald         case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS:
3871bf7a74fSMilanka Ringwald             event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO;
3881bf7a74fSMilanka Ringwald             if (value){
3891bf7a74fSMilanka Ringwald                 event[pos++] = btstack_atoi((char *)value);
3901bf7a74fSMilanka Ringwald             } else {
3911bf7a74fSMilanka Ringwald                 event[pos++] = 0;
3921bf7a74fSMilanka Ringwald             }
3931bf7a74fSMilanka Ringwald             break;
3941bf7a74fSMilanka Ringwald         default:
3951bf7a74fSMilanka Ringwald             break;
3961bf7a74fSMilanka Ringwald     }
3971bf7a74fSMilanka Ringwald     event[data_len_pos] = pos - 2;
3981bf7a74fSMilanka Ringwald     (*callback)(HCI_EVENT_PACKET, 0, event, pos);
3991bf7a74fSMilanka Ringwald }
4001bf7a74fSMilanka Ringwald 
4013d9ab93fSMilanka Ringwald static void avrcp_controller_emit_operation_status(btstack_packet_handler_t callback, uint8_t subevent, uint16_t avrcp_cid, uint8_t ctype, uint8_t operation_id){
4023d9ab93fSMilanka Ringwald     btstack_assert(callback != NULL);
4033d9ab93fSMilanka Ringwald 
4043d9ab93fSMilanka Ringwald     uint8_t event[7];
4053d9ab93fSMilanka Ringwald     int pos = 0;
4063d9ab93fSMilanka Ringwald     event[pos++] = HCI_EVENT_AVRCP_META;
4073d9ab93fSMilanka Ringwald     event[pos++] = sizeof(event) - 2;
4083d9ab93fSMilanka Ringwald     event[pos++] = subevent;
4093d9ab93fSMilanka Ringwald     little_endian_store_16(event, pos, avrcp_cid);
4103d9ab93fSMilanka Ringwald     pos += 2;
4113d9ab93fSMilanka Ringwald     event[pos++] = ctype;
4123d9ab93fSMilanka Ringwald     event[pos++] = operation_id;
4133d9ab93fSMilanka Ringwald     (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
4143d9ab93fSMilanka Ringwald }
4153d9ab93fSMilanka Ringwald 
4163d9ab93fSMilanka Ringwald static void avrcp_parser_reset(avrcp_connection_t * connection){
4173d9ab93fSMilanka Ringwald     connection->list_offset = 0;
4183d9ab93fSMilanka Ringwald     connection->num_attributes = 0;
4193d9ab93fSMilanka Ringwald     connection->num_parsed_attributes = 0;
4203d9ab93fSMilanka Ringwald     connection->parser_attribute_header_pos = 0;
4213d9ab93fSMilanka Ringwald     connection->num_received_fragments = 0;
4223d9ab93fSMilanka Ringwald     connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER;
4233d9ab93fSMilanka Ringwald }
4243d9ab93fSMilanka Ringwald 
4251bf7a74fSMilanka Ringwald static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){
426836408dfSMatthias Ringwald     uint16_t attribute_total_value_len;
427836408dfSMatthias Ringwald     uint32_t attribute_id;
4281bf7a74fSMilanka Ringwald     switch(connection->parser_state){
429836408dfSMatthias Ringwald         case AVRCP_PARSER_GET_ATTRIBUTE_HEADER:
4301bf7a74fSMilanka Ringwald             connection->parser_attribute_header[connection->parser_attribute_header_pos++] = byte;
4311bf7a74fSMilanka Ringwald             connection->list_offset++;
4329771e28cSMatthias Ringwald 
4339771e28cSMatthias Ringwald             if (connection->parser_attribute_header_pos < AVRCP_ATTRIBUTE_HEADER_LEN) return;
4349771e28cSMatthias Ringwald 
435836408dfSMatthias Ringwald             attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
4368b2b4034SMilanka Ringwald             connection->attribute_value_len = btstack_min(attribute_total_value_len, AVRCP_MAX_ATTRIBUTTE_SIZE);
4379771e28cSMatthias Ringwald             if (connection->attribute_value_len > 0){
4389771e28cSMatthias Ringwald                 // get ready for attribute value
439836408dfSMatthias Ringwald                 connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_VALUE;
440836408dfSMatthias Ringwald                 return;
4419771e28cSMatthias Ringwald             }
4429771e28cSMatthias Ringwald 
4439771e28cSMatthias Ringwald             // emit empty attribute
4449771e28cSMatthias Ringwald             attribute_id = big_endian_read_32(connection->parser_attribute_header, 0);
445dfbbc26bSMatthias 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);
4469771e28cSMatthias Ringwald 
4479771e28cSMatthias Ringwald             // done, see below
4489771e28cSMatthias Ringwald             break;
449836408dfSMatthias Ringwald 
450836408dfSMatthias Ringwald         case AVRCP_PARSER_GET_ATTRIBUTE_VALUE:
4511bf7a74fSMilanka Ringwald             connection->attribute_value[connection->attribute_value_offset++] = byte;
4521bf7a74fSMilanka Ringwald             connection->list_offset++;
4539771e28cSMatthias Ringwald 
4549771e28cSMatthias Ringwald             if (connection->attribute_value_offset < connection->attribute_value_len) return;
4558b2b4034SMilanka Ringwald 
456836408dfSMatthias Ringwald             // emit (potentially partial) attribute
457836408dfSMatthias Ringwald             attribute_id = big_endian_read_32(connection->parser_attribute_header, 0);
458dfbbc26bSMatthias 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);
4591bf7a74fSMilanka Ringwald 
460836408dfSMatthias Ringwald             attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
461836408dfSMatthias Ringwald             if (connection->attribute_value_offset < attribute_total_value_len){
4629771e28cSMatthias Ringwald                 // ignore rest of attribute
46314e95846SMilanka Ringwald                 connection->parser_state = AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE;
464836408dfSMatthias Ringwald                 return;
4651bf7a74fSMilanka Ringwald             }
4669771e28cSMatthias Ringwald 
4679771e28cSMatthias Ringwald             // done, see below
468836408dfSMatthias Ringwald             break;
4691bf7a74fSMilanka Ringwald 
47014e95846SMilanka Ringwald         case AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE:
4711bf7a74fSMilanka Ringwald             connection->attribute_value_offset++;
4729771e28cSMatthias Ringwald             connection->list_offset++;
4739771e28cSMatthias Ringwald 
4749771e28cSMatthias Ringwald             attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
4759771e28cSMatthias Ringwald             if (connection->attribute_value_offset < attribute_total_value_len) return;
4769771e28cSMatthias Ringwald 
4779771e28cSMatthias Ringwald             // done, see below
478836408dfSMatthias Ringwald             break;
4791bf7a74fSMilanka Ringwald 
480836408dfSMatthias Ringwald         default:
481836408dfSMatthias Ringwald             return;
4821bf7a74fSMilanka Ringwald     }
483836408dfSMatthias Ringwald 
484836408dfSMatthias Ringwald     // attribute fully read, check if more to come
485836408dfSMatthias Ringwald     if (connection->list_offset < connection->list_size){
4869771e28cSMatthias Ringwald         // more to come, reset parser
4871bf7a74fSMilanka Ringwald         connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER;
4881bf7a74fSMilanka Ringwald         connection->parser_attribute_header_pos = 0;
4891c7ac872SMatthias Ringwald         connection->attribute_value_offset = 0;
490836408dfSMatthias Ringwald     } else {
491836408dfSMatthias Ringwald         // fully done
492836408dfSMatthias Ringwald         avrcp_parser_reset(connection);
493836408dfSMatthias Ringwald         avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 0);
4941bf7a74fSMilanka Ringwald     }
4951bf7a74fSMilanka Ringwald }
4961bf7a74fSMilanka Ringwald 
4973d9ab93fSMilanka Ringwald static void avrcp_controller_parse_and_emit_element_attrs(uint8_t * packet, uint16_t num_bytes_to_read, avrcp_connection_t * connection, avrcp_command_type_t ctype){
4981bf7a74fSMilanka Ringwald     int i;
4991bf7a74fSMilanka Ringwald     for (i=0;i<num_bytes_to_read;i++){
5001bf7a74fSMilanka Ringwald         avrcp_parser_process_byte(packet[i], connection, ctype);
5011bf7a74fSMilanka Ringwald     }
5021bf7a74fSMilanka Ringwald }
5031bf7a74fSMilanka Ringwald 
5043d9ab93fSMilanka Ringwald 
5053d9ab93fSMilanka Ringwald static int avrcp_send_cmd(avrcp_connection_t * connection, avrcp_packet_type_t packet_type){
5063d9ab93fSMilanka Ringwald     uint8_t  command[AVRCP_CMD_BUFFER_SIZE];
5074701e250SMilanka Ringwald     uint16_t pos = 0;
5083d9ab93fSMilanka Ringwald 
5093d9ab93fSMilanka Ringwald     // non-fragmented: transport header (1) + PID (2)
5103d9ab93fSMilanka Ringwald     // fragmented:     transport header (1) + num packets (1) + PID (2)
5113d9ab93fSMilanka Ringwald 
5123d9ab93fSMilanka Ringwald     // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier)
513022b77fcSMilanka Ringwald     command[pos++] = (connection->transaction_id << 4) | (packet_type << 2) | (AVRCP_COMMAND_FRAME << 1) | 0;
5143d9ab93fSMilanka Ringwald 
5153d9ab93fSMilanka Ringwald     if (packet_type == AVRCP_START_PACKET){
5163d9ab93fSMilanka Ringwald         // num packets: (3 bytes overhead (PID, num packets) + command) / (MTU - transport header).
5173d9ab93fSMilanka Ringwald         // to get number of packets using integer division, we subtract 1 from the data e.g. len = 5, packet size 5 => need 1 packet
5183d9ab93fSMilanka Ringwald         command[pos++] = ((connection->cmd_operands_fragmented_len + 3 - 1) / (AVRCP_CMD_BUFFER_SIZE - 1)) + 1;
5193d9ab93fSMilanka Ringwald     }
5203d9ab93fSMilanka Ringwald 
5213d9ab93fSMilanka Ringwald     if ((packet_type == AVRCP_SINGLE_PACKET) || (packet_type == AVRCP_START_PACKET)){
5223d9ab93fSMilanka Ringwald         // Profile IDentifier (PID)
5233d9ab93fSMilanka Ringwald         command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8;
5243d9ab93fSMilanka Ringwald         command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF;
5253d9ab93fSMilanka Ringwald 
5263d9ab93fSMilanka Ringwald         // command_type
5273d9ab93fSMilanka Ringwald         command[pos++] = connection->command_type;
5283d9ab93fSMilanka Ringwald         // subunit_type | subunit ID
5293d9ab93fSMilanka Ringwald         command[pos++] = (connection->subunit_type << 3) | connection->subunit_id;
5303d9ab93fSMilanka Ringwald         // opcode
5313d9ab93fSMilanka Ringwald         command[pos++] = (uint8_t)connection->command_opcode;
5323d9ab93fSMilanka Ringwald     }
5333d9ab93fSMilanka Ringwald 
5343d9ab93fSMilanka Ringwald     if (packet_type == AVRCP_SINGLE_PACKET){
5353d9ab93fSMilanka Ringwald         // operands
5363d9ab93fSMilanka Ringwald         (void)memcpy(command + pos, connection->cmd_operands,
5373d9ab93fSMilanka Ringwald                      connection->cmd_operands_length);
5383d9ab93fSMilanka Ringwald         pos += connection->cmd_operands_length;
5393d9ab93fSMilanka Ringwald     } else {
5403d9ab93fSMilanka Ringwald         uint16_t bytes_free = AVRCP_CMD_BUFFER_SIZE - pos;
5413d9ab93fSMilanka Ringwald         uint16_t bytes_to_store = connection->cmd_operands_fragmented_len-connection->cmd_operands_fragmented_pos;
5423d9ab93fSMilanka Ringwald         uint16_t bytes_to_copy = btstack_min(bytes_to_store, bytes_free);
5433d9ab93fSMilanka Ringwald         (void)memcpy(command + pos,
5443d9ab93fSMilanka Ringwald                      &connection->cmd_operands_fragmented_buffer[connection->cmd_operands_fragmented_pos],
5453d9ab93fSMilanka Ringwald                      bytes_to_copy);
5463d9ab93fSMilanka Ringwald         pos += bytes_to_copy;
5473d9ab93fSMilanka Ringwald         connection->cmd_operands_fragmented_pos += bytes_to_copy;
5483d9ab93fSMilanka Ringwald     }
5493d9ab93fSMilanka Ringwald 
5503d9ab93fSMilanka Ringwald     return l2cap_send(connection->l2cap_signaling_cid, command, pos);
5513d9ab93fSMilanka Ringwald }
5523d9ab93fSMilanka Ringwald 
5534701e250SMilanka Ringwald static int avrcp_send_register_notification(avrcp_connection_t * connection, uint8_t event_id){
5544701e250SMilanka Ringwald     uint8_t command[18];
5554701e250SMilanka Ringwald     uint16_t pos = 0;
5564701e250SMilanka Ringwald     // transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier)
557022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
558022b77fcSMilanka Ringwald     command[pos++] = (connection->transaction_id << 4) | (AVRCP_SINGLE_PACKET << 2) | (AVRCP_COMMAND_FRAME << 1) | 0;
5594701e250SMilanka Ringwald 
5604701e250SMilanka Ringwald     command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8;
5614701e250SMilanka Ringwald     command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF;
5624701e250SMilanka Ringwald     command[pos++] = AVRCP_CTYPE_NOTIFY;
5634701e250SMilanka Ringwald     command[pos++] = (AVRCP_SUBUNIT_TYPE_PANEL << 3) | AVRCP_SUBUNIT_ID;
5644701e250SMilanka Ringwald     command[pos++] = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
5654701e250SMilanka Ringwald 
5664701e250SMilanka Ringwald     big_endian_store_24(command, pos, BT_SIG_COMPANY_ID);
5674701e250SMilanka Ringwald     pos += 3;
5684701e250SMilanka Ringwald     command[pos++] = AVRCP_PDU_ID_REGISTER_NOTIFICATION;
5694701e250SMilanka Ringwald     command[pos++] = 0;                       // reserved(upper 6) | packet_type -> 0
5704701e250SMilanka Ringwald     big_endian_store_16(command, pos, 5);     // parameter length
5714701e250SMilanka Ringwald     pos += 2;
5724701e250SMilanka Ringwald     command[pos++] = event_id;
5734701e250SMilanka Ringwald     big_endian_store_32(command, pos, 1);     // send notification on playback position every second, for other notifications it is ignored
5744701e250SMilanka Ringwald     pos += 4;
5754701e250SMilanka Ringwald     return l2cap_send(connection->l2cap_signaling_cid, command, pos);
5764701e250SMilanka Ringwald }
5774701e250SMilanka Ringwald 
5783d9ab93fSMilanka Ringwald static void avrcp_press_and_hold_timeout_handler(btstack_timer_source_t * timer){
5793d9ab93fSMilanka Ringwald     UNUSED(timer);
5803d9ab93fSMilanka Ringwald     avrcp_connection_t * connection = (avrcp_connection_t*) btstack_run_loop_get_timer_context(timer);
5813d9ab93fSMilanka Ringwald     btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout
5823d9ab93fSMilanka Ringwald     btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer);
5833d9ab93fSMilanka Ringwald     connection->state = AVCTP_W2_SEND_PRESS_COMMAND;
5843d9ab93fSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
5853d9ab93fSMilanka Ringwald }
5863d9ab93fSMilanka Ringwald 
5873d9ab93fSMilanka Ringwald static void avrcp_press_and_hold_timer_start(avrcp_connection_t * connection){
5883d9ab93fSMilanka Ringwald     btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer);
5893d9ab93fSMilanka Ringwald     btstack_run_loop_set_timer_handler(&connection->press_and_hold_cmd_timer, avrcp_press_and_hold_timeout_handler);
5903d9ab93fSMilanka Ringwald     btstack_run_loop_set_timer_context(&connection->press_and_hold_cmd_timer, connection);
5913d9ab93fSMilanka Ringwald     btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout
5923d9ab93fSMilanka Ringwald     btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer);
5933d9ab93fSMilanka Ringwald }
5943d9ab93fSMilanka Ringwald 
5953d9ab93fSMilanka Ringwald static void avrcp_press_and_hold_timer_stop(avrcp_connection_t * connection){
596b623cfebSMilanka Ringwald     connection->press_and_hold_cmd_active = false;
5973d9ab93fSMilanka Ringwald     btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer);
5983d9ab93fSMilanka Ringwald }
5993d9ab93fSMilanka Ringwald 
6003d9ab93fSMilanka Ringwald 
6013d9ab93fSMilanka Ringwald static uint8_t avrcp_controller_request_pass_through_release_control_cmd(avrcp_connection_t * connection){
6023d9ab93fSMilanka Ringwald     connection->state = AVCTP_W2_SEND_RELEASE_COMMAND;
603b623cfebSMilanka Ringwald     if (connection->press_and_hold_cmd_active){
6043d9ab93fSMilanka Ringwald         avrcp_press_and_hold_timer_stop(connection);
6053d9ab93fSMilanka Ringwald     }
6063d9ab93fSMilanka Ringwald     connection->cmd_operands[0] = 0x80 | connection->cmd_operands[0];
607022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
6083d9ab93fSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
6093d9ab93fSMilanka Ringwald     return ERROR_CODE_SUCCESS;
6103d9ab93fSMilanka Ringwald }
6113d9ab93fSMilanka Ringwald 
612b623cfebSMilanka Ringwald static uint8_t avrcp_controller_request_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed, bool continuous_cmd){
6133d9ab93fSMilanka Ringwald     log_info("Send command %d", opid);
6143d9ab93fSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
6153d9ab93fSMilanka Ringwald     if (!connection){
6163d9ab93fSMilanka Ringwald         log_error("Could not find a connection. avrcp cid 0x%02x", avrcp_cid);
6173d9ab93fSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
6183d9ab93fSMilanka Ringwald     }
6193d9ab93fSMilanka Ringwald 
6203d9ab93fSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED){
6213d9ab93fSMilanka Ringwald         log_error("Connection in wrong state %d, expected %d. avrcp cid 0x%02x", connection->state, AVCTP_CONNECTION_OPENED, avrcp_cid);
6223d9ab93fSMilanka Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
6233d9ab93fSMilanka Ringwald     }
6243d9ab93fSMilanka Ringwald     connection->state = AVCTP_W2_SEND_PRESS_COMMAND;
6253d9ab93fSMilanka Ringwald     connection->command_opcode =  AVRCP_CMD_OPCODE_PASS_THROUGH;
6263d9ab93fSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
6273d9ab93fSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
6283d9ab93fSMilanka Ringwald     connection->subunit_id =   AVRCP_SUBUNIT_ID;
6293d9ab93fSMilanka Ringwald     connection->cmd_operands_length = 0;
6303d9ab93fSMilanka Ringwald 
631b623cfebSMilanka Ringwald     connection->press_and_hold_cmd_active = continuous_cmd;
6323d9ab93fSMilanka Ringwald     connection->cmd_operands_length = 2;
6333d9ab93fSMilanka Ringwald     connection->cmd_operands[0] = opid;
6343d9ab93fSMilanka Ringwald     if (playback_speed > 0){
6353d9ab93fSMilanka Ringwald         connection->cmd_operands[2] = playback_speed;
6363d9ab93fSMilanka Ringwald         connection->cmd_operands_length++;
6373d9ab93fSMilanka Ringwald     }
6383d9ab93fSMilanka Ringwald     connection->cmd_operands[1] = connection->cmd_operands_length - 2;
6393d9ab93fSMilanka Ringwald 
640b623cfebSMilanka Ringwald     if (connection->press_and_hold_cmd_active){
6413d9ab93fSMilanka Ringwald         avrcp_press_and_hold_timer_start(connection);
6423d9ab93fSMilanka Ringwald     }
6433d9ab93fSMilanka Ringwald 
644022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
6453d9ab93fSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
6463d9ab93fSMilanka Ringwald     return ERROR_CODE_SUCCESS;
6473d9ab93fSMilanka Ringwald }
6483d9ab93fSMilanka Ringwald 
6493d9ab93fSMilanka Ringwald static uint8_t request_single_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){
6500c436f0bSMatthias Ringwald     return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, false);
6513d9ab93fSMilanka Ringwald }
6523d9ab93fSMilanka Ringwald 
6533d9ab93fSMilanka Ringwald static uint8_t request_continuous_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){
6540c436f0bSMatthias Ringwald     return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, true);
6553d9ab93fSMilanka Ringwald }
6563d9ab93fSMilanka Ringwald 
657826b3cedSMilanka Ringwald static void avrcp_controller_get_capabilities_for_connection(avrcp_connection_t * connection, uint8_t capability_id){
658826b3cedSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
659826b3cedSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
660826b3cedSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
661826b3cedSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
662826b3cedSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
663826b3cedSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
664826b3cedSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
665826b3cedSMilanka Ringwald     connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CAPABILITIES; // PDU ID
666826b3cedSMilanka Ringwald     connection->cmd_operands[4] = 0;
667826b3cedSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, 5, 1); // parameter length
668826b3cedSMilanka Ringwald     connection->cmd_operands[7] = capability_id;                  // capability ID
669826b3cedSMilanka Ringwald     connection->cmd_operands_length = 8;
670826b3cedSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
671826b3cedSMilanka Ringwald }
6722b8461f9SMilanka Ringwald 
6732b8461f9SMilanka Ringwald static uint8_t avrcp_controller_register_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){
6742ac1dc76SMilanka Ringwald     if (connection->remote_supported_notifications_queried && (connection->remote_supported_notifications & (1 << event_id)) == 0){
6752b8461f9SMilanka Ringwald         return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
6762b8461f9SMilanka Ringwald     }
6772b8461f9SMilanka Ringwald     if ( (connection->notifications_to_deregister & (1 << event_id)) != 0){
6782b8461f9SMilanka Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
6792b8461f9SMilanka Ringwald     }
6802b8461f9SMilanka Ringwald     if ( (connection->notifications_enabled & (1 << event_id)) != 0){
6812b8461f9SMilanka Ringwald         return ERROR_CODE_SUCCESS;
6822b8461f9SMilanka Ringwald     }
6833d9ab93fSMilanka Ringwald     connection->notifications_to_register |= (1 << event_id);
6842ac1dc76SMilanka Ringwald 
6852ac1dc76SMilanka Ringwald     if (!connection->remote_supported_notifications_queried){
6862ac1dc76SMilanka Ringwald         connection->remote_supported_notifications_suppress_emit_result = true;
6872ac1dc76SMilanka Ringwald         avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_EVENT);
6882ac1dc76SMilanka Ringwald         return ERROR_CODE_SUCCESS;
6892ac1dc76SMilanka Ringwald     }
6903d9ab93fSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
6912b8461f9SMilanka Ringwald     return ERROR_CODE_SUCCESS;
6923d9ab93fSMilanka Ringwald }
6933d9ab93fSMilanka Ringwald 
6941bf7a74fSMilanka Ringwald static uint8_t avrcp_controller_request_abort_continuation(avrcp_connection_t * connection){
6951bf7a74fSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
696022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
6971bf7a74fSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
6981bf7a74fSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
6991bf7a74fSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
7001bf7a74fSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
7011bf7a74fSMilanka Ringwald     int pos = 0;
7021bf7a74fSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
7031bf7a74fSMilanka Ringwald     pos += 3;
7041bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE; // PDU ID
7051bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
7061bf7a74fSMilanka Ringwald     // Parameter Length
7071bf7a74fSMilanka Ringwald     connection->cmd_operands_length = 8;
7081bf7a74fSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 1);
7091bf7a74fSMilanka Ringwald     pos += 2;
7101bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES;
7111bf7a74fSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
7121bf7a74fSMilanka Ringwald     return ERROR_CODE_SUCCESS;
7131bf7a74fSMilanka Ringwald }
7141bf7a74fSMilanka Ringwald 
7151bf7a74fSMilanka Ringwald 
7161bf7a74fSMilanka Ringwald static uint8_t avrcp_controller_request_continue_response(avrcp_connection_t * connection){
7171bf7a74fSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
718022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
7191bf7a74fSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
7201bf7a74fSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
7211bf7a74fSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
7221bf7a74fSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
7231bf7a74fSMilanka Ringwald     int pos = 0;
7241bf7a74fSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
7251bf7a74fSMilanka Ringwald     pos += 3;
7261bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE; // PDU ID
7271bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
7281bf7a74fSMilanka Ringwald     // Parameter Length
7291bf7a74fSMilanka Ringwald     connection->cmd_operands_length = 8;
7301bf7a74fSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 1);
7311bf7a74fSMilanka Ringwald     pos += 2;
7321bf7a74fSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES;
7331bf7a74fSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
7341bf7a74fSMilanka Ringwald     return ERROR_CODE_SUCCESS;
7351bf7a74fSMilanka Ringwald }
7361bf7a74fSMilanka Ringwald 
737737e7617SMilanka Ringwald static void avrcp_controller_handle_notification(avrcp_connection_t *connection, avrcp_command_type_t ctype, uint8_t *payload, uint16_t size) {
73899702381SMatthias Ringwald     if (size < 1) return;
7394701e250SMilanka Ringwald     uint16_t pos = 0;
7404701e250SMilanka Ringwald     avrcp_notification_event_id_t event_id = (avrcp_notification_event_id_t) payload[pos++];
7414701e250SMilanka Ringwald     uint16_t event_mask = (1 << event_id);
7424701e250SMilanka Ringwald     uint16_t reset_event_mask = ~event_mask;
743dac572e6SMilanka Ringwald 
7444701e250SMilanka Ringwald     switch (ctype){
7454701e250SMilanka Ringwald         case AVRCP_CTYPE_RESPONSE_INTERIM:
7464701e250SMilanka Ringwald             // register as enabled
7474701e250SMilanka Ringwald             connection->notifications_enabled |= event_mask;
748737e7617SMilanka Ringwald             avrcp_controller_emit_notification_complete(connection, ERROR_CODE_SUCCESS, event_id);
749bce3db21SMilanka Ringwald             // check if initial value is already sent
750dac572e6SMilanka Ringwald             if ( (connection->initial_status_reported & event_mask) > 0 ){
751dac572e6SMilanka Ringwald                 return;
752dac572e6SMilanka Ringwald             }
753dac572e6SMilanka Ringwald             connection->initial_status_reported |= event_mask;
7544701e250SMilanka Ringwald             break;
7554701e250SMilanka Ringwald         case AVRCP_CTYPE_RESPONSE_CHANGED_STABLE:
756bce3db21SMilanka Ringwald             // received change, event is considered de-registered
7574701e250SMilanka Ringwald             // we are re-enabling it automatically, if it is not
7584701e250SMilanka Ringwald             // explicitly disabled
7594701e250SMilanka Ringwald             connection->notifications_enabled &= reset_event_mask;
7604701e250SMilanka Ringwald             if (! (connection->notifications_to_deregister & event_mask)){
7614701e250SMilanka Ringwald                 avrcp_controller_register_notification(connection, event_id);
7624701e250SMilanka Ringwald             } else {
7634701e250SMilanka Ringwald                 connection->notifications_to_deregister &= reset_event_mask;
7644701e250SMilanka Ringwald             }
7654701e250SMilanka Ringwald             break;
7664701e250SMilanka Ringwald         default:
7674701e250SMilanka Ringwald             connection->notifications_to_register &= reset_event_mask;
7684701e250SMilanka Ringwald             connection->notifications_enabled &= reset_event_mask;
7694701e250SMilanka Ringwald             connection->notifications_to_deregister &= reset_event_mask;
7704701e250SMilanka Ringwald             break;
7714701e250SMilanka Ringwald     }
7724701e250SMilanka Ringwald 
77399702381SMatthias Ringwald     avrcp_controller_emit_notification_for_event_id(connection->avrcp_cid, event_id, ctype, payload + pos, size - pos);
7744701e250SMilanka Ringwald }
7754701e250SMilanka Ringwald 
776c3b8c0a2SMilanka Ringwald #ifdef ENABLE_AVCTP_FRAGMENTATION
777c3b8c0a2SMilanka Ringwald static void avctp_reassemble_message(avrcp_connection_t * connection, avctp_packet_type_t packet_type, uint8_t *packet, uint16_t size){
778c3b8c0a2SMilanka Ringwald     // after header (transaction label and packet type)
779c3b8c0a2SMilanka Ringwald     uint16_t pos;
780c3b8c0a2SMilanka Ringwald     uint16_t bytes_to_store;
781c3b8c0a2SMilanka Ringwald 
782c3b8c0a2SMilanka Ringwald     switch (packet_type){
783c3b8c0a2SMilanka Ringwald         case AVCTP_START_PACKET:
784c3b8c0a2SMilanka Ringwald             if (size < 2) return;
785c3b8c0a2SMilanka Ringwald 
786c3b8c0a2SMilanka Ringwald             // store header
787c3b8c0a2SMilanka Ringwald             pos = 0;
788c3b8c0a2SMilanka Ringwald             connection->avctp_reassembly_buffer[pos] = packet[pos];
789c3b8c0a2SMilanka Ringwald             pos++;
790c3b8c0a2SMilanka Ringwald             connection->avctp_reassembly_size = pos;
791c3b8c0a2SMilanka Ringwald 
792c3b8c0a2SMilanka Ringwald             // NOTE: num packets not needed for reassembly, ignoring it does not pose security risk -> no need to store it
793c3b8c0a2SMilanka Ringwald             pos++;
794c3b8c0a2SMilanka Ringwald 
795c3b8c0a2SMilanka Ringwald             // PID in reassembled packet is at offset 1, it will be read later after the avctp_reassemble_message with AVCTP_END_PACKET is called
796c3b8c0a2SMilanka Ringwald 
797c3b8c0a2SMilanka Ringwald             bytes_to_store = btstack_min(size - pos, sizeof(connection->avctp_reassembly_buffer) - connection->avctp_reassembly_size);
798c3b8c0a2SMilanka Ringwald             memcpy(&connection->avctp_reassembly_buffer[connection->avctp_reassembly_size], &packet[pos], bytes_to_store);
799c3b8c0a2SMilanka Ringwald             connection->avctp_reassembly_size += bytes_to_store;
800c3b8c0a2SMilanka Ringwald             break;
801c3b8c0a2SMilanka Ringwald 
802c3b8c0a2SMilanka Ringwald         case AVCTP_CONTINUE_PACKET:
803c3b8c0a2SMilanka Ringwald         case AVCTP_END_PACKET:
804c3b8c0a2SMilanka Ringwald             if (size < 1) return;
805c3b8c0a2SMilanka Ringwald 
806c3b8c0a2SMilanka Ringwald             // store remaining data, ignore header
807c3b8c0a2SMilanka Ringwald             pos = 1;
808c3b8c0a2SMilanka Ringwald             bytes_to_store = btstack_min(size - pos, sizeof(connection->avctp_reassembly_buffer) - connection->avctp_reassembly_size);
809c3b8c0a2SMilanka Ringwald             memcpy(&connection->avctp_reassembly_buffer[connection->avctp_reassembly_size], &packet[pos], bytes_to_store);
810c3b8c0a2SMilanka Ringwald             connection->avctp_reassembly_size += bytes_to_store;
811c3b8c0a2SMilanka Ringwald             break;
812c3b8c0a2SMilanka Ringwald 
813c3b8c0a2SMilanka Ringwald         default:
814c3b8c0a2SMilanka Ringwald             return;
815c3b8c0a2SMilanka Ringwald     }
816c3b8c0a2SMilanka Ringwald }
817c3b8c0a2SMilanka Ringwald #endif
818c3b8c0a2SMilanka Ringwald 
8196983e65eSMilanka Ringwald static void avrcp_handle_l2cap_data_packet_for_signaling_connection(avrcp_connection_t * connection, uint8_t *packet, uint16_t size){
820697b823eSMatthias Ringwald     if (size < 6u) return;
8213acd1f1cSMilanka Ringwald     uint8_t  pdu_id;
822c3b8c0a2SMilanka Ringwald     avrcp_packet_type_t  vendor_dependent_packet_type;
8233acd1f1cSMilanka Ringwald 
824c3b8c0a2SMilanka Ringwald     uint16_t pos = 0;
825c3b8c0a2SMilanka Ringwald     connection->last_confirmed_transaction_id = packet[pos] >> 4;
826c3b8c0a2SMilanka Ringwald     avrcp_frame_type_t  frame_type =  (avrcp_frame_type_t)((packet[pos] >> 1) & 0x01);
827c3b8c0a2SMilanka Ringwald     avctp_packet_type_t packet_type = (avctp_packet_type_t)((packet[pos] >> 2) & 0x03);
828c3b8c0a2SMilanka Ringwald     pos++;
8296e7485d0SMilanka Ringwald 
8303acd1f1cSMilanka Ringwald     if (frame_type != AVRCP_RESPONSE_FRAME) return;
8313acd1f1cSMilanka Ringwald 
8323acd1f1cSMilanka Ringwald     switch (packet_type){
833c3b8c0a2SMilanka Ringwald         case AVCTP_SINGLE_PACKET:
8343acd1f1cSMilanka Ringwald             break;
835c3b8c0a2SMilanka Ringwald 
836c3b8c0a2SMilanka Ringwald #ifdef ENABLE_AVCTP_FRAGMENTATION
837c3b8c0a2SMilanka Ringwald         case AVCTP_START_PACKET:
838c3b8c0a2SMilanka Ringwald         case AVCTP_CONTINUE_PACKET:
839c3b8c0a2SMilanka Ringwald             avctp_reassemble_message(connection, packet_type, packet, size);
840c3b8c0a2SMilanka Ringwald             return;
841c3b8c0a2SMilanka Ringwald 
842c3b8c0a2SMilanka Ringwald         case AVCTP_END_PACKET:
843c3b8c0a2SMilanka Ringwald             avctp_reassemble_message(connection, packet_type, packet, size);
844c3b8c0a2SMilanka Ringwald 
845c3b8c0a2SMilanka Ringwald             packet = connection->avctp_reassembly_buffer;
846c3b8c0a2SMilanka Ringwald             size   = connection->avctp_reassembly_size;
847c3b8c0a2SMilanka Ringwald             break;
848c3b8c0a2SMilanka Ringwald #endif
849c3b8c0a2SMilanka Ringwald 
8503acd1f1cSMilanka Ringwald         default:
8513acd1f1cSMilanka Ringwald             return;
8523acd1f1cSMilanka Ringwald     }
8533acd1f1cSMilanka Ringwald 
854c3b8c0a2SMilanka Ringwald     pos += 2; // PID
855c3b8c0a2SMilanka Ringwald 
8566983e65eSMilanka Ringwald     avrcp_command_type_t ctype = (avrcp_command_type_t) packet[pos++];
8573acd1f1cSMilanka Ringwald 
858e0d13a19SMilanka Ringwald #ifdef ENABLE_LOG_INFO
859e0d13a19SMilanka Ringwald     uint8_t byte_value = packet[pos];
8606983e65eSMilanka Ringwald     avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3);
8616983e65eSMilanka Ringwald     avrcp_subunit_type_t subunit_id   = (avrcp_subunit_type_t) (byte_value & 0x07);
862e0d13a19SMilanka Ringwald #endif
863e0d13a19SMilanka Ringwald     pos++;
8646983e65eSMilanka Ringwald 
865e0d13a19SMilanka Ringwald     uint8_t opcode = packet[pos++];
8666983e65eSMilanka Ringwald     uint16_t param_length;
8673acd1f1cSMilanka Ringwald 
8683acd1f1cSMilanka Ringwald     switch (opcode){
869ad75da14SMilanka Ringwald         case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{
870ad75da14SMilanka Ringwald             if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return;
871ad75da14SMilanka Ringwald             connection->state = AVCTP_CONNECTION_OPENED;
872e0d13a19SMilanka Ringwald 
873e0d13a19SMilanka Ringwald #ifdef ENABLE_LOG_INFO
87499845bb7SMilanka Ringwald             // page, extension code (1)
875e33c5309SMilanka Ringwald             pos++;
876e33c5309SMilanka Ringwald             uint8_t unit_type = packet[pos] >> 3;
877e33c5309SMilanka Ringwald             uint8_t max_subunit_ID = packet[pos] & 0x07;
878ad75da14SMilanka 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);
879e0d13a19SMilanka Ringwald #endif
880ad75da14SMilanka Ringwald             break;
881ad75da14SMilanka Ringwald         }
8826983e65eSMilanka Ringwald         case AVRCP_CMD_OPCODE_UNIT_INFO:{
8836983e65eSMilanka Ringwald             if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return;
8846983e65eSMilanka Ringwald             connection->state = AVCTP_CONNECTION_OPENED;
885e0d13a19SMilanka Ringwald 
886e0d13a19SMilanka Ringwald #ifdef ENABLE_LOG_INFO
887e33c5309SMilanka Ringwald             // byte value 7 (1)
888e33c5309SMilanka Ringwald             pos++;
889e33c5309SMilanka Ringwald             uint8_t unit_type = packet[pos] >> 3;
890e33c5309SMilanka Ringwald             uint8_t unit = packet[pos] & 0x07;
891e33c5309SMilanka Ringwald             pos++;
892e33c5309SMilanka Ringwald             uint32_t company_id = big_endian_read_24(packet, pos);
893adaba9f3SMatthias 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,
8946983e65eSMilanka Ringwald                 ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id);
895e0d13a19SMilanka Ringwald #endif
8966983e65eSMilanka Ringwald             break;
8976983e65eSMilanka Ringwald         }
8986983e65eSMilanka Ringwald         case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT:
89999702381SMatthias Ringwald 
90099702381SMatthias Ringwald             if ((size - pos) < 7) return;
90199702381SMatthias Ringwald 
902e33c5309SMilanka Ringwald             // Company ID (3)
903e33c5309SMilanka Ringwald             pos += 3;
904e33c5309SMilanka Ringwald             pdu_id = packet[pos++];
90561920526SMilanka Ringwald             vendor_dependent_packet_type = (avrcp_packet_type_t)(packet[pos++] & 0x03);
906e33c5309SMilanka Ringwald             param_length = big_endian_read_16(packet, pos);
907e33c5309SMilanka Ringwald             pos += 2;
908e33c5309SMilanka Ringwald 
90999702381SMatthias Ringwald             if ((size - pos) < param_length) return;
9106983e65eSMilanka Ringwald 
9114701e250SMilanka Ringwald             // handle asynchronous notifications, without changing state
9124701e250SMilanka Ringwald             if (pdu_id == AVRCP_PDU_ID_REGISTER_NOTIFICATION){
913737e7617SMilanka Ringwald                 avrcp_controller_handle_notification(connection, ctype, packet + pos, size - pos);
9144701e250SMilanka Ringwald                 break;
9154701e250SMilanka Ringwald             }
9164701e250SMilanka Ringwald 
9174701e250SMilanka Ringwald             if (connection->state != AVCTP_W2_RECEIVE_RESPONSE){
9186983e65eSMilanka Ringwald                 log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state);
9196983e65eSMilanka Ringwald                 return;
9206983e65eSMilanka Ringwald             }
9216983e65eSMilanka Ringwald             connection->state = AVCTP_CONNECTION_OPENED;
9226983e65eSMilanka Ringwald 
9236983e65eSMilanka Ringwald             log_info("VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype));
9246983e65eSMilanka Ringwald             switch (pdu_id){
92508485fc4SMilanka Ringwald                 case AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE:{
9266983e65eSMilanka Ringwald                     uint8_t num_attributes = packet[pos++];
9276983e65eSMilanka Ringwald                     int i;
9286983e65eSMilanka Ringwald                     avrcp_repeat_mode_t  repeat_mode =  AVRCP_REPEAT_MODE_INVALID;
9296983e65eSMilanka Ringwald                     avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID;
9306983e65eSMilanka Ringwald                     for (i = 0; i < num_attributes; i++){
9316983e65eSMilanka Ringwald                         uint8_t attribute_id    = packet[pos++];
9326983e65eSMilanka Ringwald                         uint8_t value = packet[pos++];
9336983e65eSMilanka Ringwald                         switch (attribute_id){
9346983e65eSMilanka Ringwald                             case 0x02:
9356983e65eSMilanka Ringwald                                 repeat_mode = (avrcp_repeat_mode_t) value;
9366983e65eSMilanka Ringwald                                 break;
9376983e65eSMilanka Ringwald                             case 0x03:
9386983e65eSMilanka Ringwald                                 shuffle_mode = (avrcp_shuffle_mode_t) value;
9396983e65eSMilanka Ringwald                                 break;
9406983e65eSMilanka Ringwald                             default:
9416983e65eSMilanka Ringwald                                 break;
9426983e65eSMilanka Ringwald                         }
9436983e65eSMilanka Ringwald                     }
9443d9ab93fSMilanka Ringwald                     avrcp_controller_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode);
9456983e65eSMilanka Ringwald                     break;
9466983e65eSMilanka Ringwald                 }
94716dc7cb4SMilanka Ringwald 
94808485fc4SMilanka Ringwald                 case AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE:{
9495509e888SMatthias Ringwald                     uint16_t offset = 0;
9506983e65eSMilanka Ringwald                     uint8_t event[6];
9516983e65eSMilanka Ringwald                     event[offset++] = HCI_EVENT_AVRCP_META;
9526983e65eSMilanka Ringwald                     event[offset++] = sizeof(event) - 2;
9536983e65eSMilanka Ringwald                     event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE;
9546983e65eSMilanka Ringwald                     little_endian_store_16(event, offset, connection->avrcp_cid);
9556983e65eSMilanka Ringwald                     offset += 2;
9566983e65eSMilanka Ringwald                     event[offset++] = ctype;
9576983e65eSMilanka Ringwald                     (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
9586983e65eSMilanka Ringwald                     break;
9596983e65eSMilanka Ringwald                 }
96016dc7cb4SMilanka Ringwald 
9616983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{
9625509e888SMatthias Ringwald                     uint16_t offset = 0;
9636983e65eSMilanka Ringwald                     uint8_t event[7];
9646983e65eSMilanka Ringwald                     event[offset++] = HCI_EVENT_AVRCP_META;
9656983e65eSMilanka Ringwald                     event[offset++] = sizeof(event) - 2;
9666983e65eSMilanka Ringwald                     event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE;
9676983e65eSMilanka Ringwald                     little_endian_store_16(event, offset, connection->avrcp_cid);
9686983e65eSMilanka Ringwald                     offset += 2;
9696983e65eSMilanka Ringwald                     event[offset++] = ctype;
9706983e65eSMilanka Ringwald                     event[offset++] = packet[pos++];
9716983e65eSMilanka Ringwald                     (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
9726983e65eSMilanka Ringwald                     break;
9736983e65eSMilanka Ringwald                 }
97416dc7cb4SMilanka Ringwald 
9756983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_GET_CAPABILITIES:{
9766983e65eSMilanka Ringwald                     avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++];
977cb925874SMatthias Ringwald                     uint8_t capability_count = 0;
978cb925874SMatthias Ringwald                     if (param_length > 1){
979cb925874SMatthias Ringwald                         capability_count = packet[pos++];
980cb925874SMatthias Ringwald                     }
9815509e888SMatthias Ringwald                     uint16_t i;
9825509e888SMatthias Ringwald                     uint16_t offset = 0;
9835509e888SMatthias Ringwald                     uint8_t event[10];
9844f5eb797SMilanka Ringwald 
9856983e65eSMilanka Ringwald                     switch (capability_id){
9864f5eb797SMilanka Ringwald 
9876983e65eSMilanka Ringwald                         case AVRCP_CAPABILITY_ID_COMPANY:
9883032b6e1SMilanka Ringwald                             for (i = 0; (i < capability_count) && ((size - pos) >= 3); i++){
9896983e65eSMilanka Ringwald                                 uint32_t company_id = big_endian_read_24(packet, pos);
9906983e65eSMilanka Ringwald                                 pos += 3;
991adaba9f3SMatthias Ringwald                                 log_info("  0x%06" PRIx32 ", ", company_id);
9924f5eb797SMilanka Ringwald 
9934f5eb797SMilanka Ringwald                                 offset = 0;
9944f5eb797SMilanka Ringwald                                 event[offset++] = HCI_EVENT_AVRCP_META;
9954f5eb797SMilanka Ringwald                                 event[offset++] = sizeof(event) - 2;
9964f5eb797SMilanka Ringwald                                 event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID;
9974f5eb797SMilanka Ringwald                                 little_endian_store_16(event, offset, connection->avrcp_cid);
9984f5eb797SMilanka Ringwald                                 offset += 2;
9994f5eb797SMilanka Ringwald                                 event[offset++] = ctype;
10004f5eb797SMilanka Ringwald                                 event[offset++] = 0;
10014f5eb797SMilanka Ringwald                                 little_endian_store_24(event, offset, company_id);
10024f5eb797SMilanka Ringwald                                 offset += 3;
10034f5eb797SMilanka Ringwald                                 (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset);
10044f5eb797SMilanka Ringwald                             }
10054f5eb797SMilanka Ringwald 
10064f5eb797SMilanka Ringwald                             offset = 0;
10074f5eb797SMilanka Ringwald                             event[offset++] = HCI_EVENT_AVRCP_META;
10084f5eb797SMilanka Ringwald                             event[offset++] = sizeof(event) - 2;
10094f5eb797SMilanka Ringwald                             event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE;
10104f5eb797SMilanka Ringwald                             little_endian_store_16(event, offset, connection->avrcp_cid);
10114f5eb797SMilanka Ringwald                             offset += 2;
10124f5eb797SMilanka Ringwald                             event[offset++] = ctype;
10134f5eb797SMilanka Ringwald                             event[offset++] = 0;
10144f5eb797SMilanka Ringwald                             (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset);
10154f5eb797SMilanka Ringwald                             break;
10164f5eb797SMilanka Ringwald 
10176983e65eSMilanka Ringwald                         case AVRCP_CAPABILITY_ID_EVENT:
10183032b6e1SMilanka Ringwald                             for (i = 0; (i < capability_count) && ((size - pos) >= 1); i++){
10196983e65eSMilanka Ringwald                                 uint8_t event_id = packet[pos++];
1020ff243a1bSMilanka Ringwald                                 connection->remote_supported_notifications |= (1 << event_id);
10216983e65eSMilanka Ringwald                             }
1022*274ca16fSMilanka Ringwald 
1023*274ca16fSMilanka Ringwald                             // if the get supported events query is triggered by avrcp_controller_enable_notification call,
1024*274ca16fSMilanka Ringwald                             // avrcp_controller_emit_supported_events should be suppressed
10252ac1dc76SMilanka Ringwald                             if (connection->remote_supported_notifications_suppress_emit_result){
10262ac1dc76SMilanka Ringwald                                 connection->remote_supported_notifications_suppress_emit_result = false;
1027*274ca16fSMilanka Ringwald                                 // also, notification might not be supported
1028*274ca16fSMilanka Ringwald                                 // if so, emit AVRCP_SUBEVENT_ENABLE_NOTIFICATION_COMPLETE event to app,
1029*274ca16fSMilanka Ringwald                                 // and update notifications_to_register bitmap
1030*274ca16fSMilanka Ringwald                                 for (i = (uint8_t)AVRCP_NOTIFICATION_EVENT_FIRST_INDEX; i < (uint8_t) AVRCP_NOTIFICATION_EVENT_LAST_INDEX; i++){
1031*274ca16fSMilanka Ringwald                                     if ((connection->notifications_to_register & (1<<i)) != 0){
1032*274ca16fSMilanka Ringwald                                         if ((connection->remote_supported_notifications & (1<<i)) == 0){
1033*274ca16fSMilanka Ringwald                                             avrcp_controller_emit_notification_complete(connection, ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE, i);
1034*274ca16fSMilanka Ringwald                                             connection->notifications_to_register &= ~(1 << i);
1035*274ca16fSMilanka Ringwald                                         }
1036*274ca16fSMilanka Ringwald                                     }
1037*274ca16fSMilanka Ringwald                                 }
10382ac1dc76SMilanka Ringwald                                 break;
10392ac1dc76SMilanka Ringwald                             }
1040*274ca16fSMilanka Ringwald                             // supported events are emitted only if the get supported events query
1041*274ca16fSMilanka Ringwald                             // is triggered by avrcp_controller_get_supported_events call
1042ff243a1bSMilanka Ringwald                             avrcp_controller_emit_supported_events(connection);
10436983e65eSMilanka Ringwald                             break;
10447bbeb3adSMilanka Ringwald 
10457bbeb3adSMilanka Ringwald                         default:
1046cb925874SMatthias Ringwald                             // ignore
10477bbeb3adSMilanka Ringwald                             break;
10486983e65eSMilanka Ringwald                     }
10496983e65eSMilanka Ringwald                     break;
10506983e65eSMilanka Ringwald                 }
105116dc7cb4SMilanka Ringwald 
10526983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_GET_PLAY_STATUS:{
10536983e65eSMilanka Ringwald                     uint32_t song_length = big_endian_read_32(packet, pos);
10546983e65eSMilanka Ringwald                     pos += 4;
10556983e65eSMilanka Ringwald                     uint32_t song_position = big_endian_read_32(packet, pos);
10566983e65eSMilanka Ringwald                     pos += 4;
10576983e65eSMilanka Ringwald                     uint8_t play_status = packet[pos];
10586983e65eSMilanka Ringwald 
10596983e65eSMilanka Ringwald                     uint8_t event[15];
10606983e65eSMilanka Ringwald                     int offset = 0;
10616983e65eSMilanka Ringwald                     event[offset++] = HCI_EVENT_AVRCP_META;
10626983e65eSMilanka Ringwald                     event[offset++] = sizeof(event) - 2;
10636983e65eSMilanka Ringwald                     event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS;
10646983e65eSMilanka Ringwald                     little_endian_store_16(event, offset, connection->avrcp_cid);
10656983e65eSMilanka Ringwald                     offset += 2;
10666983e65eSMilanka Ringwald                     event[offset++] = ctype;
10676983e65eSMilanka Ringwald                     little_endian_store_32(event, offset, song_length);
10686983e65eSMilanka Ringwald                     offset += 4;
10696983e65eSMilanka Ringwald                     little_endian_store_32(event, offset, song_position);
10706983e65eSMilanka Ringwald                     offset += 4;
10716983e65eSMilanka Ringwald                     event[offset++] = play_status;
10726983e65eSMilanka Ringwald                     (*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
10736983e65eSMilanka Ringwald                     break;
10746983e65eSMilanka Ringwald                 }
10756983e65eSMilanka Ringwald 
10766983e65eSMilanka Ringwald                 case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{
107761920526SMilanka Ringwald                     switch (vendor_dependent_packet_type){
10781bf7a74fSMilanka Ringwald                         case AVRCP_START_PACKET:
10791bf7a74fSMilanka Ringwald                         case AVRCP_SINGLE_PACKET:
10801bf7a74fSMilanka Ringwald                             avrcp_parser_reset(connection);
10811bf7a74fSMilanka Ringwald                             connection->list_size = param_length;
10821bf7a74fSMilanka Ringwald                             connection->num_attributes = packet[pos++];
10838b2b4034SMilanka Ringwald 
10843d9ab93fSMilanka Ringwald                             avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype);
108561920526SMilanka Ringwald                             if (vendor_dependent_packet_type == AVRCP_START_PACKET){
10861bf7a74fSMilanka Ringwald                                 avrcp_controller_request_continue_response(connection);
10876983e65eSMilanka Ringwald                             }
10886983e65eSMilanka Ringwald                             break;
10891bf7a74fSMilanka Ringwald                         case AVRCP_CONTINUE_PACKET:
10901bf7a74fSMilanka Ringwald                         case AVRCP_END_PACKET:
10918b2b4034SMilanka Ringwald                             connection->num_received_fragments++;
109261920526SMilanka Ringwald 
10938b2b4034SMilanka Ringwald                             if (connection->num_received_fragments < connection->max_num_fragments){
10943d9ab93fSMilanka Ringwald                                 avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype);
109561920526SMilanka Ringwald 
109661920526SMilanka Ringwald                                 if (vendor_dependent_packet_type == AVRCP_CONTINUE_PACKET){
10978b2b4034SMilanka Ringwald                                     avrcp_controller_request_continue_response(connection);
10988b2b4034SMilanka Ringwald                                 }
10998b2b4034SMilanka Ringwald                             } else {
11008b2b4034SMilanka Ringwald                                 avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1);
11018b2b4034SMilanka Ringwald                                 avrcp_parser_reset(connection);
110261920526SMilanka Ringwald                                 avrcp_controller_request_abort_continuation(connection);
11038b2b4034SMilanka Ringwald                             }
11041bf7a74fSMilanka Ringwald                             break;
11057bbeb3adSMilanka Ringwald                         default:
11067bbeb3adSMilanka Ringwald                             // TODO check
11077bbeb3adSMilanka Ringwald                             btstack_assert(false);
11087bbeb3adSMilanka Ringwald                             break;
11091bf7a74fSMilanka Ringwald                     }
11106983e65eSMilanka Ringwald                 }
11116983e65eSMilanka Ringwald                 default:
11126983e65eSMilanka Ringwald                     break;
11136983e65eSMilanka Ringwald             }
11146983e65eSMilanka Ringwald             break;
11156983e65eSMilanka Ringwald         case AVRCP_CMD_OPCODE_PASS_THROUGH:{
111699702381SMatthias Ringwald             if ((size - pos) < 1) return;
11176983e65eSMilanka Ringwald             uint8_t operation_id = packet[pos++];
11186983e65eSMilanka Ringwald             switch (connection->state){
11196983e65eSMilanka Ringwald                 case AVCTP_W2_RECEIVE_PRESS_RESPONSE:
1120a2e9e6d7SMilanka Ringwald                     // trigger release for simple command:
1121a2e9e6d7SMilanka Ringwald                     if (!connection->press_and_hold_cmd_active){
11226983e65eSMilanka Ringwald                         connection->state = AVCTP_W2_SEND_RELEASE_COMMAND;
1123a2e9e6d7SMilanka Ringwald                         break;
1124a2e9e6d7SMilanka Ringwald                     }
1125a2e9e6d7SMilanka Ringwald                     // for press and hold, send release if it just has been requested, otherwise, wait for next repeat
1126a2e9e6d7SMilanka Ringwald                     if (connection->press_and_hold_cmd_release){
1127a2e9e6d7SMilanka Ringwald                         connection->press_and_hold_cmd_release = false;
1128a2e9e6d7SMilanka Ringwald                         connection->state = AVCTP_W2_SEND_RELEASE_COMMAND;
1129a2e9e6d7SMilanka Ringwald                     } else {
1130a2e9e6d7SMilanka Ringwald                         connection->state = AVCTP_W4_STOP;
11316983e65eSMilanka Ringwald                     }
11326983e65eSMilanka Ringwald                     break;
11336983e65eSMilanka Ringwald                 case AVCTP_W2_RECEIVE_RESPONSE:
11346983e65eSMilanka Ringwald                     connection->state = AVCTP_CONNECTION_OPENED;
11356983e65eSMilanka Ringwald                     break;
11366983e65eSMilanka Ringwald                 default:
11376983e65eSMilanka Ringwald                     break;
11386983e65eSMilanka Ringwald             }
11396983e65eSMilanka Ringwald             if (connection->state == AVCTP_W4_STOP){
11403d9ab93fSMilanka Ringwald                 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id);
11416983e65eSMilanka Ringwald             }
11426983e65eSMilanka Ringwald             if (connection->state == AVCTP_CONNECTION_OPENED) {
11436983e65eSMilanka Ringwald                 // RELEASE response
11446983e65eSMilanka Ringwald                 operation_id = operation_id & 0x7F;
11453d9ab93fSMilanka Ringwald                 avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id);
11466983e65eSMilanka Ringwald             }
11476983e65eSMilanka Ringwald             if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){
11486983e65eSMilanka Ringwald                 // PRESS response
11493d9ab93fSMilanka Ringwald                 avrcp_controller_request_pass_through_release_control_cmd(connection);
11506983e65eSMilanka Ringwald             }
11516983e65eSMilanka Ringwald             break;
11526983e65eSMilanka Ringwald         }
11536983e65eSMilanka Ringwald         default:
11546983e65eSMilanka Ringwald             break;
11556983e65eSMilanka Ringwald     }
11562a7bb97aSMatthias Ringwald 
11572a7bb97aSMatthias Ringwald     // trigger pending notification reqistrations
11580e588213SMatthias Ringwald     if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->notifications_to_register){
11592a7bb97aSMatthias Ringwald         avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
11602a7bb97aSMatthias Ringwald     }
11616983e65eSMilanka Ringwald }
11626983e65eSMilanka Ringwald 
11636983e65eSMilanka Ringwald static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){
11646983e65eSMilanka Ringwald     switch (connection->state){
11656983e65eSMilanka Ringwald         case AVCTP_W2_SEND_PRESS_COMMAND:
11666983e65eSMilanka Ringwald             connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE;
1167c4b5c3d5SMatthias Ringwald             avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET);
116816dc7cb4SMilanka Ringwald             return;
11696983e65eSMilanka Ringwald         case AVCTP_W2_SEND_COMMAND:
11706983e65eSMilanka Ringwald         case AVCTP_W2_SEND_RELEASE_COMMAND:
11716983e65eSMilanka Ringwald             connection->state = AVCTP_W2_RECEIVE_RESPONSE;
1172c4b5c3d5SMatthias Ringwald             avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET);
11736983e65eSMilanka Ringwald             return;
1174c4b5c3d5SMatthias Ringwald         case AVCTP_W2_SEND_FRAGMENTED_COMMAND:
1175c4b5c3d5SMatthias Ringwald             if (connection->cmd_operands_fragmented_pos == 0){
1176c4b5c3d5SMatthias Ringwald                  avrcp_send_cmd(connection, AVRCP_START_PACKET);
1177c4b5c3d5SMatthias Ringwald                  avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1178c4b5c3d5SMatthias Ringwald             } else {
1179c1ab6cc1SMatthias Ringwald                 if ((connection->cmd_operands_fragmented_len - connection->cmd_operands_fragmented_pos) > avrcp_get_max_payload_size_for_packet_type(AVRCP_CONTINUE_PACKET)){
1180c4b5c3d5SMatthias Ringwald                      avrcp_send_cmd(connection, AVRCP_CONTINUE_PACKET);
1181c4b5c3d5SMatthias Ringwald                      avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1182c4b5c3d5SMatthias Ringwald                  } else {
1183c4b5c3d5SMatthias Ringwald                     connection->state = AVCTP_W2_RECEIVE_RESPONSE;
1184c4b5c3d5SMatthias Ringwald                     avrcp_send_cmd(connection, AVRCP_END_PACKET);
1185c4b5c3d5SMatthias Ringwald                  }
1186c4b5c3d5SMatthias Ringwald             }
11876983e65eSMilanka Ringwald             return;
118816dc7cb4SMilanka Ringwald         default:
118916dc7cb4SMilanka Ringwald             break;
119016dc7cb4SMilanka Ringwald     }
119116dc7cb4SMilanka Ringwald     // send register notification if queued
119216dc7cb4SMilanka Ringwald     if (connection->notifications_to_register != 0){
11934701e250SMilanka Ringwald         uint8_t event_id;
119499845bb7SMilanka Ringwald         for (event_id = (uint8_t)AVRCP_NOTIFICATION_EVENT_FIRST_INDEX; event_id < (uint8_t)AVRCP_NOTIFICATION_EVENT_LAST_INDEX; event_id++){
11954701e250SMilanka Ringwald             if (connection->notifications_to_register & (1<<event_id)){
11964701e250SMilanka Ringwald                 connection->notifications_to_register &= ~ (1 << event_id);
11974701e250SMilanka Ringwald                 avrcp_send_register_notification(connection, event_id);
119816dc7cb4SMilanka Ringwald                 return;
119916dc7cb4SMilanka Ringwald             }
120016dc7cb4SMilanka Ringwald         }
12016983e65eSMilanka Ringwald     }
12026983e65eSMilanka Ringwald }
12036983e65eSMilanka Ringwald 
12046983e65eSMilanka Ringwald static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
12056983e65eSMilanka Ringwald     avrcp_connection_t * connection;
12066983e65eSMilanka Ringwald 
12076983e65eSMilanka Ringwald     switch (packet_type) {
12086983e65eSMilanka Ringwald         case L2CAP_DATA_PACKET:
12091945fe3eSMilanka Ringwald             connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel);
12106983e65eSMilanka Ringwald             avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size);
12116983e65eSMilanka Ringwald             break;
12120036e267SMilanka Ringwald 
12136983e65eSMilanka Ringwald         case HCI_EVENT_PACKET:
12146983e65eSMilanka Ringwald             switch (hci_event_packet_get_type(packet)){
12156983e65eSMilanka Ringwald                 case L2CAP_EVENT_CAN_SEND_NOW:
12161945fe3eSMilanka Ringwald                     connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel);
12176983e65eSMilanka Ringwald                     avrcp_controller_handle_can_send_now(connection);
12186983e65eSMilanka Ringwald                     break;
12196983e65eSMilanka Ringwald             default:
12206983e65eSMilanka Ringwald                 break;
12216983e65eSMilanka Ringwald         }
12226983e65eSMilanka Ringwald         default:
12236983e65eSMilanka Ringwald             break;
12246983e65eSMilanka Ringwald     }
12256983e65eSMilanka Ringwald }
12266983e65eSMilanka Ringwald 
12273d9ab93fSMilanka 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){
12283d9ab93fSMilanka Ringwald     avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name);
12293d9ab93fSMilanka Ringwald }
12303d9ab93fSMilanka Ringwald 
12316983e65eSMilanka Ringwald void avrcp_controller_init(void){
12326983e65eSMilanka Ringwald     avrcp_controller_context.role = AVRCP_CONTROLLER;
12336983e65eSMilanka Ringwald     avrcp_controller_context.packet_handler = avrcp_controller_packet_handler;
1234b106f728SMilanka Ringwald     avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler);
12356983e65eSMilanka Ringwald }
12366983e65eSMilanka Ringwald 
1237680af5dcSMatthias Ringwald void avrcp_controller_deinit(void){
1238680af5dcSMatthias Ringwald     memset(&avrcp_controller_context, 0, sizeof(avrcp_context_t));
1239680af5dcSMatthias Ringwald }
1240680af5dcSMatthias Ringwald 
12416983e65eSMilanka Ringwald void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){
1242be4cc80aSMilanka Ringwald     btstack_assert(callback != NULL);
12436983e65eSMilanka Ringwald     avrcp_controller_context.avrcp_callback = callback;
12446983e65eSMilanka Ringwald }
12456983e65eSMilanka Ringwald 
12463d9ab93fSMilanka Ringwald 
12473d9ab93fSMilanka Ringwald uint8_t avrcp_controller_play(uint16_t avrcp_cid){
12483d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0);
12493d9ab93fSMilanka Ringwald }
12503d9ab93fSMilanka Ringwald 
12513d9ab93fSMilanka Ringwald uint8_t avrcp_controller_stop(uint16_t avrcp_cid){
12523d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0);
12533d9ab93fSMilanka Ringwald }
12543d9ab93fSMilanka Ringwald 
12553d9ab93fSMilanka Ringwald uint8_t avrcp_controller_pause(uint16_t avrcp_cid){
12563d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0);
12573d9ab93fSMilanka Ringwald }
12583d9ab93fSMilanka Ringwald 
12593d9ab93fSMilanka Ringwald uint8_t avrcp_controller_forward(uint16_t avrcp_cid){
12603d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0);
12613d9ab93fSMilanka Ringwald }
12623d9ab93fSMilanka Ringwald 
12633d9ab93fSMilanka Ringwald uint8_t avrcp_controller_backward(uint16_t avrcp_cid){
12643d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0);
12653d9ab93fSMilanka Ringwald }
12663d9ab93fSMilanka Ringwald 
12673d9ab93fSMilanka Ringwald uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){
12683d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0);
12693d9ab93fSMilanka Ringwald }
12703d9ab93fSMilanka Ringwald 
12713d9ab93fSMilanka Ringwald uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){
12723d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0);
12733d9ab93fSMilanka Ringwald }
12743d9ab93fSMilanka Ringwald 
12753d9ab93fSMilanka Ringwald uint8_t avrcp_controller_mute(uint16_t avrcp_cid){
12763d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0);
12773d9ab93fSMilanka Ringwald }
12783d9ab93fSMilanka Ringwald 
12793d9ab93fSMilanka Ringwald uint8_t avrcp_controller_skip(uint16_t avrcp_cid){
12803d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0);
12813d9ab93fSMilanka Ringwald }
12823d9ab93fSMilanka Ringwald 
12833d9ab93fSMilanka Ringwald uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){
12843d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0);
12853d9ab93fSMilanka Ringwald }
12863d9ab93fSMilanka Ringwald 
12873d9ab93fSMilanka Ringwald uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){
12883d9ab93fSMilanka Ringwald     return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0);
12893d9ab93fSMilanka Ringwald }
12903d9ab93fSMilanka Ringwald 
12913d9ab93fSMilanka Ringwald /* start continuous cmds */
12923d9ab93fSMilanka Ringwald 
129337a7ced0SMatthias Ringwald uint8_t avrcp_controller_start_press_and_hold_cmd(uint16_t avrcp_cid, avrcp_operation_id_t operation_id){
129437a7ced0SMatthias Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, operation_id, 0);
129537a7ced0SMatthias Ringwald }
129637a7ced0SMatthias Ringwald 
12973d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){
12983d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0);
12993d9ab93fSMilanka Ringwald }
13003d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){
13013d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0);
13023d9ab93fSMilanka Ringwald }
13033d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){
13043d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0);
13053d9ab93fSMilanka Ringwald }
13063d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){
13073d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0);
13083d9ab93fSMilanka Ringwald }
13093d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){
13103d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0);
13113d9ab93fSMilanka Ringwald }
13123d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){
13133d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0);
13143d9ab93fSMilanka Ringwald }
13153d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){
13163d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0);
13173d9ab93fSMilanka Ringwald }
13183d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){
13193d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0);
13203d9ab93fSMilanka Ringwald }
13213d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){
13223d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0);
13233d9ab93fSMilanka Ringwald }
13243d9ab93fSMilanka Ringwald uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){
13253d9ab93fSMilanka Ringwald     return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0);
13263d9ab93fSMilanka Ringwald }
13273d9ab93fSMilanka Ringwald 
13283d9ab93fSMilanka Ringwald /* stop continuous cmds */
13293d9ab93fSMilanka Ringwald uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){
13303d9ab93fSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
13313d9ab93fSMilanka Ringwald     if (!connection){
13323d9ab93fSMilanka Ringwald         log_error("avrcp_stop_play: could not find a connection.");
13333d9ab93fSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
13343d9ab93fSMilanka Ringwald     }
1335a2e9e6d7SMilanka Ringwald 
1336a2e9e6d7SMilanka Ringwald     switch (connection->state){
1337a2e9e6d7SMilanka Ringwald         // respond when we receive response for (repeated) press command
1338a2e9e6d7SMilanka Ringwald         case AVCTP_W2_RECEIVE_PRESS_RESPONSE:
1339a2e9e6d7SMilanka Ringwald             connection->press_and_hold_cmd_release = true;
1340a2e9e6d7SMilanka Ringwald             break;
1341a2e9e6d7SMilanka Ringwald 
1342a2e9e6d7SMilanka Ringwald         // release already sent or on the way, nothing to do
1343a2e9e6d7SMilanka Ringwald         case AVCTP_W2_RECEIVE_RESPONSE:
1344a2e9e6d7SMilanka Ringwald         case AVCTP_W2_SEND_RELEASE_COMMAND:
1345a2e9e6d7SMilanka Ringwald             break;
1346a2e9e6d7SMilanka Ringwald 
1347a2e9e6d7SMilanka Ringwald         // about to send next repeated press command or wait for it -> release right away
1348a2e9e6d7SMilanka Ringwald         case AVCTP_W2_SEND_PRESS_COMMAND:
1349a2e9e6d7SMilanka Ringwald         case AVCTP_W4_STOP:
13503d9ab93fSMilanka Ringwald             return avrcp_controller_request_pass_through_release_control_cmd(connection);
1351a2e9e6d7SMilanka Ringwald 
1352a2e9e6d7SMilanka Ringwald         // otherwise reject request
1353a2e9e6d7SMilanka Ringwald         default:
1354a2e9e6d7SMilanka Ringwald             return ERROR_CODE_COMMAND_DISALLOWED;
1355a2e9e6d7SMilanka Ringwald     }
1356a2e9e6d7SMilanka Ringwald     return ERROR_CODE_SUCCESS;
13573d9ab93fSMilanka Ringwald }
13583d9ab93fSMilanka Ringwald 
13593d9ab93fSMilanka Ringwald uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){
13603d9ab93fSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
13613d9ab93fSMilanka Ringwald     if (!connection){
13623d9ab93fSMilanka Ringwald         log_error("avrcp_get_play_status: could not find a connection.");
13633d9ab93fSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
13643d9ab93fSMilanka Ringwald     }
13652b8461f9SMilanka Ringwald     return avrcp_controller_register_notification(connection, event_id);
13663d9ab93fSMilanka Ringwald }
13673d9ab93fSMilanka Ringwald 
13683d9ab93fSMilanka Ringwald uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){
13693d9ab93fSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
13703d9ab93fSMilanka Ringwald     if (!connection){
13713d9ab93fSMilanka Ringwald         log_error("avrcp_get_play_status: could not find a connection.");
13723d9ab93fSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
13733d9ab93fSMilanka Ringwald     }
13743d9ab93fSMilanka Ringwald     connection->notifications_to_deregister |= (1 << event_id);
13753d9ab93fSMilanka Ringwald     return ERROR_CODE_SUCCESS;
13763d9ab93fSMilanka Ringwald }
13773d9ab93fSMilanka Ringwald 
13786983e65eSMilanka Ringwald uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){
13791945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
13806983e65eSMilanka Ringwald     if (!connection){
13816983e65eSMilanka Ringwald         log_error("avrcp_unit_info: could not find a connection.");
13826983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
13836983e65eSMilanka Ringwald     }
13846983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
13856983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
13866983e65eSMilanka Ringwald 
1387022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
13886983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_UNIT_INFO;
13896983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
13906983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique
13916983e65eSMilanka Ringwald     connection->subunit_id =   AVRCP_SUBUNIT_ID_IGNORE;
13926983e65eSMilanka Ringwald     memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length);
13936983e65eSMilanka Ringwald     connection->cmd_operands_length = 5;
13946983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
13956983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
13966983e65eSMilanka Ringwald }
13976983e65eSMilanka Ringwald 
1398ad75da14SMilanka Ringwald uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){
13991945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1400ad75da14SMilanka Ringwald     if (!connection){
1401ad75da14SMilanka Ringwald         log_error("avrcp_unit_info: could not find a connection.");
1402ad75da14SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1403ad75da14SMilanka Ringwald     }
1404ad75da14SMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
1405ad75da14SMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
1406ad75da14SMilanka Ringwald 
1407022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
1408ad75da14SMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_SUBUNIT_INFO;
1409ad75da14SMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
1410ad75da14SMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique
1411ad75da14SMilanka Ringwald     connection->subunit_id =   AVRCP_SUBUNIT_ID_IGNORE;
1412ad75da14SMilanka Ringwald     memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length);
1413ad75da14SMilanka Ringwald     connection->cmd_operands[0] = 7; // page: 0, extention_code: 7
1414ad75da14SMilanka Ringwald     connection->cmd_operands_length = 5;
1415ad75da14SMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1416ad75da14SMilanka Ringwald     return ERROR_CODE_SUCCESS;
1417ad75da14SMilanka Ringwald }
1418ad75da14SMilanka Ringwald 
14191f94eaa5SMilanka Ringwald uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){
14201945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
14216983e65eSMilanka Ringwald     if (!connection){
14226983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
14236983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
14246983e65eSMilanka Ringwald     }
1425826b3cedSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED){
1426826b3cedSMilanka Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
1427826b3cedSMilanka Ringwald     }
14281f94eaa5SMilanka Ringwald     avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_COMPANY);
14291f94eaa5SMilanka Ringwald     return ERROR_CODE_SUCCESS;
14306983e65eSMilanka Ringwald }
14316983e65eSMilanka Ringwald 
14326983e65eSMilanka Ringwald uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){
14331f94eaa5SMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
14341f94eaa5SMilanka Ringwald     if (!connection){
14351f94eaa5SMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
14361f94eaa5SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
14371f94eaa5SMilanka Ringwald     }
14381f94eaa5SMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED){
14391f94eaa5SMilanka Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
14401f94eaa5SMilanka Ringwald     }
14411f94eaa5SMilanka Ringwald 
14422ac1dc76SMilanka Ringwald     if (!connection->remote_supported_notifications_queried){
14432ac1dc76SMilanka Ringwald         connection->remote_supported_notifications_queried = true;
14441f94eaa5SMilanka Ringwald         avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_EVENT);
14451f94eaa5SMilanka Ringwald         return ERROR_CODE_SUCCESS;
14466983e65eSMilanka Ringwald     }
14476983e65eSMilanka Ringwald 
14482ac1dc76SMilanka Ringwald     avrcp_controller_emit_supported_events(connection);
14492ac1dc76SMilanka Ringwald     return ERROR_CODE_SUCCESS;
14502ac1dc76SMilanka Ringwald }
14512ac1dc76SMilanka Ringwald 
14526983e65eSMilanka Ringwald uint8_t avrcp_controller_get_play_status(uint16_t avrcp_cid){
14531945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
14546983e65eSMilanka Ringwald     if (!connection){
14556983e65eSMilanka Ringwald         log_error("avrcp_get_play_status: could not find a connection.");
14566983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
14576983e65eSMilanka Ringwald     }
14586983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
14596983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
1460022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
14616983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
14626983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
14636983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
14646983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
14656983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
14666983e65eSMilanka Ringwald     connection->cmd_operands[3] = AVRCP_PDU_ID_GET_PLAY_STATUS;
14676983e65eSMilanka Ringwald     connection->cmd_operands[4] = 0;                     // reserved(upper 6) | packet_type -> 0
14686983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, 5, 0); // parameter length
14696983e65eSMilanka Ringwald     connection->cmd_operands_length = 7;
14706983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
14716983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
14726983e65eSMilanka Ringwald }
14736983e65eSMilanka Ringwald 
1474864d08b0SMilanka Ringwald uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){
14751945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1476864d08b0SMilanka Ringwald     if (!connection){
1477864d08b0SMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
1478864d08b0SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1479864d08b0SMilanka Ringwald     }
1480864d08b0SMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
1481864d08b0SMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
1482864d08b0SMilanka Ringwald 
1483022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
1484864d08b0SMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
1485864d08b0SMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
1486864d08b0SMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
1487864d08b0SMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
1488864d08b0SMilanka Ringwald     int pos = 0;
1489864d08b0SMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
1490864d08b0SMilanka Ringwald     pos += 3;
1491864d08b0SMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ADDRESSED_PLAYER; // PDU ID
1492864d08b0SMilanka Ringwald     connection->cmd_operands[pos++] = 0;
1493864d08b0SMilanka Ringwald 
1494864d08b0SMilanka Ringwald     // Parameter Length
1495864d08b0SMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 2);
1496864d08b0SMilanka Ringwald     pos += 2;
1497864d08b0SMilanka Ringwald 
1498864d08b0SMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, addressed_player_id);
1499864d08b0SMilanka Ringwald     pos += 2;
1500864d08b0SMilanka Ringwald 
1501864d08b0SMilanka Ringwald     connection->cmd_operands_length = pos;
1502864d08b0SMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1503864d08b0SMilanka Ringwald     return ERROR_CODE_SUCCESS;
1504864d08b0SMilanka Ringwald }
15051bf7a74fSMilanka Ringwald 
150661920526SMilanka Ringwald uint8_t avrcp_controller_get_element_attributes(uint16_t avrcp_cid, uint8_t num_attributes, avrcp_media_attribute_id_t * attributes){
15071945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
15086983e65eSMilanka Ringwald     if (!connection){
15096983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
15106983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
15116983e65eSMilanka Ringwald     }
151261920526SMilanka Ringwald 
15136983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
151461920526SMilanka Ringwald 
151561920526SMilanka Ringwald     if (num_attributes >= AVRCP_MEDIA_ATTR_RESERVED) {
151661920526SMilanka Ringwald         return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;
151761920526SMilanka Ringwald     }
15186983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
15196983e65eSMilanka Ringwald 
1520022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
15216983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
15226983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
15236983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
15246983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
15256983e65eSMilanka Ringwald     int pos = 0;
15266983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
15276983e65eSMilanka Ringwald     pos += 3;
15286983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; // PDU ID
15296983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
15306983e65eSMilanka Ringwald 
15316983e65eSMilanka Ringwald     // Parameter Length
15326983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 9);
15336983e65eSMilanka Ringwald     pos += 2;
15346983e65eSMilanka Ringwald 
15356983e65eSMilanka Ringwald     // write 8 bytes value
15366983e65eSMilanka Ringwald     memset(connection->cmd_operands + pos, 0, 8); // identifier: PLAYING
15376983e65eSMilanka Ringwald     pos += 8;
15386983e65eSMilanka Ringwald 
153961920526SMilanka Ringwald     connection->cmd_operands[pos++] = num_attributes; // attribute count, if 0 get all attributes
154061920526SMilanka Ringwald 
154161920526SMilanka Ringwald     int i;
154261920526SMilanka Ringwald     for (i = 0; i < num_attributes; i++){
15436983e65eSMilanka Ringwald         // every attribute is 4 bytes long
154461920526SMilanka Ringwald         big_endian_store_32(connection->cmd_operands, pos, attributes[i]);
154561920526SMilanka Ringwald         pos += 4;
154661920526SMilanka Ringwald     }
15476983e65eSMilanka Ringwald 
15486983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
15496983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
15506983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
15516983e65eSMilanka Ringwald }
15526983e65eSMilanka Ringwald 
155361920526SMilanka Ringwald uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){
155461920526SMilanka Ringwald     return avrcp_controller_get_element_attributes(avrcp_cid, 0, NULL);
155561920526SMilanka Ringwald }
155661920526SMilanka Ringwald 
15576983e65eSMilanka Ringwald uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){
15581945fe3eSMilanka Ringwald      avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
15596983e65eSMilanka Ringwald     if (!connection){
15606983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
15616983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
15626983e65eSMilanka Ringwald     }
15636e7485d0SMilanka Ringwald 
15646e7485d0SMilanka Ringwald     //
15656e7485d0SMilanka Ringwald     // allow sending of multiple set abs volume commands without waiting for response
15666e7485d0SMilanka Ringwald     //
15676e7485d0SMilanka Ringwald     uint8_t status = ERROR_CODE_COMMAND_DISALLOWED;
15686e7485d0SMilanka Ringwald     switch (connection->state){
15696e7485d0SMilanka Ringwald         case AVCTP_CONNECTION_OPENED:
15706e7485d0SMilanka Ringwald             status = ERROR_CODE_SUCCESS;
15716e7485d0SMilanka Ringwald             break;
15726e7485d0SMilanka Ringwald         case AVCTP_W2_RECEIVE_RESPONSE:
15736e7485d0SMilanka Ringwald             // - is pending response also set abs volume
15746e7485d0SMilanka Ringwald             if (connection->command_opcode  != AVRCP_CMD_OPCODE_VENDOR_DEPENDENT) break;
15756e7485d0SMilanka Ringwald             if (connection->command_type    != AVRCP_CTYPE_CONTROL)               break;
15766e7485d0SMilanka Ringwald             if (connection->subunit_type    != AVRCP_SUBUNIT_TYPE_PANEL)          break;
15776e7485d0SMilanka Ringwald             if (connection->subunit_id      != AVRCP_SUBUNIT_ID)                  break;
15786e7485d0SMilanka Ringwald             if (connection->cmd_operands[3] != AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME)  break;
15796e7485d0SMilanka Ringwald             // - is next transaction id valid in window
15806e7485d0SMilanka Ringwald             if (avrcp_controller_is_transaction_id_valid(connection, avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter)) == false) break;
15816e7485d0SMilanka Ringwald             status = ERROR_CODE_SUCCESS;
15826e7485d0SMilanka Ringwald             break;
15836e7485d0SMilanka Ringwald         default:
15846e7485d0SMilanka Ringwald             break;
15856e7485d0SMilanka Ringwald     }
15866e7485d0SMilanka Ringwald     if (status != ERROR_CODE_SUCCESS) return status;
15876e7485d0SMilanka Ringwald 
15886983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
15896983e65eSMilanka Ringwald 
1590022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
15916983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
15926983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
15936983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
15946983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
15956983e65eSMilanka Ringwald     int pos = 0;
15966983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
15976983e65eSMilanka Ringwald     pos += 3;
15986983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME; // PDU ID
15996983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
16006983e65eSMilanka Ringwald 
16016983e65eSMilanka Ringwald     // Parameter Length
16026983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 1);
16036983e65eSMilanka Ringwald     pos += 2;
16046983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = volume;
16056983e65eSMilanka Ringwald 
16066983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
16076983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
16086983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
16096983e65eSMilanka Ringwald }
16106983e65eSMilanka Ringwald 
16116983e65eSMilanka Ringwald uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){
16121945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
16136983e65eSMilanka Ringwald     if (!connection){
16146983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
16156983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
16166983e65eSMilanka Ringwald     }
16176983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
16186983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
16196983e65eSMilanka Ringwald 
1620022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
16216983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
16226983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_STATUS;
16236983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
16246983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
16256983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
162608485fc4SMilanka Ringwald     connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID
16276983e65eSMilanka Ringwald     connection->cmd_operands[4] = 0;
16286983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, 5, 5); // parameter length
16296983e65eSMilanka Ringwald     connection->cmd_operands[7] = 4;                     // NumPlayerApplicationSettingAttributeID
16306983e65eSMilanka Ringwald     // PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133
16316983e65eSMilanka Ringwald     connection->cmd_operands[8]  = 0x01;    // equalizer  (1-OFF, 2-ON)
16326983e65eSMilanka Ringwald     connection->cmd_operands[9]  = 0x02;    // repeat     (1-off, 2-single track, 3-all tracks, 4-group repeat)
16336983e65eSMilanka Ringwald     connection->cmd_operands[10] = 0x03;    // shuffle    (1-off, 2-all tracks, 3-group shuffle)
16346983e65eSMilanka Ringwald     connection->cmd_operands[11] = 0x04;    // scan       (1-off, 2-all tracks, 3-group scan)
16356983e65eSMilanka Ringwald     connection->cmd_operands_length = 12;
16366983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
16376983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
16386983e65eSMilanka Ringwald }
16396983e65eSMilanka Ringwald 
16406983e65eSMilanka Ringwald static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){
16411945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
16426983e65eSMilanka Ringwald     if (!connection){
16436983e65eSMilanka Ringwald         log_error("avrcp_get_capabilities: could not find a connection.");
16446983e65eSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
16456983e65eSMilanka Ringwald     }
16466983e65eSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
16476983e65eSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
16486983e65eSMilanka Ringwald 
1649022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
16506983e65eSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
16516983e65eSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
16526983e65eSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
16536983e65eSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
16546983e65eSMilanka Ringwald     int pos = 0;
16556983e65eSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
16566983e65eSMilanka Ringwald     pos += 3;
165708485fc4SMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID
16586983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
16596983e65eSMilanka Ringwald     // Parameter Length
16606983e65eSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 3);
16616983e65eSMilanka Ringwald     pos += 2;
16626983e65eSMilanka Ringwald     connection->cmd_operands[pos++] = 2;
16636983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
16646983e65eSMilanka Ringwald     connection->cmd_operands[pos++]  = attr_id;
16656983e65eSMilanka Ringwald     connection->cmd_operands[pos++]  = attr_value;
16666983e65eSMilanka Ringwald     connection->cmd_operands_length = pos;
16676983e65eSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
16686983e65eSMilanka Ringwald     return ERROR_CODE_SUCCESS;
16696983e65eSMilanka Ringwald }
16706983e65eSMilanka Ringwald 
16716983e65eSMilanka Ringwald uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){
16720e588213SMatthias Ringwald     if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
16736983e65eSMilanka Ringwald     return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode);
16746983e65eSMilanka Ringwald }
16756983e65eSMilanka Ringwald 
16766983e65eSMilanka Ringwald uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){
16770e588213SMatthias Ringwald     if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
16786983e65eSMilanka Ringwald     return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode);
16796983e65eSMilanka Ringwald }
16806983e65eSMilanka Ringwald 
16814614c049SMilanka 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){
16821945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1683be65baf4SMilanka Ringwald     if (!connection){
16844931e24aSMilanka Ringwald         log_error("Could not find a connection with cid 0%02x.", avrcp_cid);
1685be65baf4SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1686be65baf4SMilanka Ringwald     }
16874931e24aSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED){
16884931e24aSMilanka Ringwald         log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state);
16894931e24aSMilanka Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
16904931e24aSMilanka Ringwald     }
1691be65baf4SMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
1692be65baf4SMilanka Ringwald 
1693022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
1694be65baf4SMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
1695be65baf4SMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
1696be65baf4SMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
1697be65baf4SMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
1698be65baf4SMilanka Ringwald     int pos = 0;
1699be65baf4SMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
1700be65baf4SMilanka Ringwald     pos += 3;
1701be65baf4SMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_PLAY_ITEM; // PDU ID
1702be65baf4SMilanka Ringwald     // reserved
1703be65baf4SMilanka Ringwald     connection->cmd_operands[pos++] = 0;
1704be65baf4SMilanka Ringwald     // Parameter Length
1705be65baf4SMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 11);
1706be65baf4SMilanka Ringwald     pos += 2;
1707be65baf4SMilanka Ringwald     connection->cmd_operands[pos++]  = scope;
1708be65baf4SMilanka Ringwald     memset(&connection->cmd_operands[pos], 0, 8);
1709be65baf4SMilanka Ringwald     if (uid){
17106535961aSMatthias Ringwald         (void)memcpy(&connection->cmd_operands[pos], uid, 8);
1711be65baf4SMilanka Ringwald     }
1712be65baf4SMilanka Ringwald     pos += 8;
1713be65baf4SMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, uid_counter);
1714be65baf4SMilanka Ringwald     pos += 2;
1715be65baf4SMilanka Ringwald     connection->cmd_operands_length = pos;
1716be65baf4SMilanka Ringwald 
1717be65baf4SMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1718be65baf4SMilanka Ringwald     return ERROR_CODE_SUCCESS;
1719be65baf4SMilanka Ringwald }
17208b2b4034SMilanka Ringwald 
17214931e24aSMilanka 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){
17221945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
17234931e24aSMilanka Ringwald     if (!connection){
17244931e24aSMilanka Ringwald         log_error("Could not find a connection with cid 0%02x.", avrcp_cid);
17254931e24aSMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
17264931e24aSMilanka Ringwald     }
17274931e24aSMilanka Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED){
17284931e24aSMilanka Ringwald         log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state);
17294931e24aSMilanka Ringwald         return ERROR_CODE_COMMAND_DISALLOWED;
17304931e24aSMilanka Ringwald     }
17314931e24aSMilanka Ringwald     connection->state = AVCTP_W2_SEND_COMMAND;
17324931e24aSMilanka Ringwald 
1733022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
17344931e24aSMilanka Ringwald     connection->command_type = AVRCP_CTYPE_CONTROL;
17354931e24aSMilanka Ringwald     connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
17364931e24aSMilanka Ringwald     connection->subunit_id = AVRCP_SUBUNIT_ID;
17374931e24aSMilanka Ringwald     connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
17384931e24aSMilanka Ringwald     int pos = 0;
17394931e24aSMilanka Ringwald     big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
17404931e24aSMilanka Ringwald     pos += 3;
17417f803253SMilanka Ringwald     connection->cmd_operands[pos++] = AVRCP_PDU_ID_ADD_TO_NOW_PLAYING; // PDU ID
17424931e24aSMilanka Ringwald     // reserved
17434931e24aSMilanka Ringwald     connection->cmd_operands[pos++] = 0;
17444931e24aSMilanka Ringwald     // Parameter Length
17454931e24aSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, 11);
17464931e24aSMilanka Ringwald     pos += 2;
17474931e24aSMilanka Ringwald     connection->cmd_operands[pos++]  = scope;
17484931e24aSMilanka Ringwald     memset(&connection->cmd_operands[pos], 0, 8);
17494931e24aSMilanka Ringwald     if (uid){
17506535961aSMatthias Ringwald         (void)memcpy(&connection->cmd_operands[pos], uid, 8);
17514931e24aSMilanka Ringwald     }
17524931e24aSMilanka Ringwald     pos += 8;
17534931e24aSMilanka Ringwald     big_endian_store_16(connection->cmd_operands, pos, uid_counter);
17544931e24aSMilanka Ringwald     pos += 2;
17554931e24aSMilanka Ringwald     connection->cmd_operands_length = pos;
17564931e24aSMilanka Ringwald 
17574931e24aSMilanka Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
17584931e24aSMilanka Ringwald     return ERROR_CODE_SUCCESS;
17594931e24aSMilanka Ringwald }
17604931e24aSMilanka Ringwald 
17618b2b4034SMilanka Ringwald uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){
17621945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
17638b2b4034SMilanka Ringwald     if (!connection){
17648b2b4034SMilanka Ringwald         log_error("avrcp_controller_play_item: could not find a connection.");
17658b2b4034SMilanka Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
17668b2b4034SMilanka Ringwald     }
17678b2b4034SMilanka Ringwald     connection->max_num_fragments = max_num_fragments;
17688b2b4034SMilanka Ringwald     return ERROR_CODE_SUCCESS;
17698b2b4034SMilanka Ringwald }
1770c4b5c3d5SMatthias Ringwald 
1771c4b5c3d5SMatthias 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){
17721945fe3eSMilanka Ringwald     avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
1773c4b5c3d5SMatthias Ringwald     if (!connection){
1774c4b5c3d5SMatthias Ringwald         log_error("avrcp_controller_play_item: could not find a connection.");
1775c4b5c3d5SMatthias Ringwald         return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
1776c4b5c3d5SMatthias Ringwald     }
1777c4b5c3d5SMatthias Ringwald 
1778c4b5c3d5SMatthias Ringwald     if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
1779c4b5c3d5SMatthias Ringwald     connection->state = AVCTP_W2_SEND_FRAGMENTED_COMMAND;
1780c4b5c3d5SMatthias Ringwald 
1781022b77fcSMilanka Ringwald     connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
1782c4b5c3d5SMatthias Ringwald     connection->command_opcode = command_opcode;
1783c4b5c3d5SMatthias Ringwald     connection->command_type = command_type;
1784c4b5c3d5SMatthias Ringwald     connection->subunit_type = subunit_type;
1785c4b5c3d5SMatthias Ringwald     connection->subunit_id = subunit_id;
1786c4b5c3d5SMatthias Ringwald     connection->cmd_operands_fragmented_buffer = command_buffer;
1787c4b5c3d5SMatthias Ringwald     connection->cmd_operands_fragmented_pos = 0;
1788c4b5c3d5SMatthias Ringwald     connection->cmd_operands_fragmented_len = command_len;
1789c4b5c3d5SMatthias Ringwald 
1790c4b5c3d5SMatthias Ringwald     avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
1791c4b5c3d5SMatthias Ringwald     return ERROR_CODE_SUCCESS;
1792c4b5c3d5SMatthias Ringwald }
1793