1 //
2 // Copyright 2017 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 // http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16 
17 #pragma once
18 
19 #include <hidl/HidlSupport.h>
20 
21 #include "async_fd_watcher.h"
22 #include "hci_internals.h"
23 #include "hci_protocol.h"
24 
25 namespace android {
26 namespace hardware {
27 namespace bluetooth {
28 namespace hci {
29 
30 class H4Protocol : public HciProtocol {
31  public:
H4Protocol(int fd,PacketReadCallback event_cb,PacketReadCallback acl_cb,PacketReadCallback sco_cb)32   H4Protocol(int fd, PacketReadCallback event_cb, PacketReadCallback acl_cb,
33              PacketReadCallback sco_cb)
34       : uart_fd_(fd),
35         event_cb_(event_cb),
36         acl_cb_(acl_cb),
37         sco_cb_(sco_cb),
38         hci_packetizer_([this]() { OnPacketReady(); }) {}
39 
40   size_t Send(uint8_t type, const uint8_t* data, size_t length);
41 
42   void OnPacketReady();
43 
44   void OnDataReady(int fd);
45 
46  private:
47   int uart_fd_;
48 
49   PacketReadCallback event_cb_;
50   PacketReadCallback acl_cb_;
51   PacketReadCallback sco_cb_;
52 
53   HciPacketType hci_packet_type_{HCI_PACKET_TYPE_UNKNOWN};
54   hci::HciPacketizer hci_packetizer_;
55 };
56 
57 }  // namespace hci
58 }  // namespace bluetooth
59 }  // namespace hardware
60 }  // namespace android
61