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_packetizer.h"
24
25namespace android {
26namespace hardware {
27namespace bluetooth {
28namespace hci {
29
30using ::android::hardware::hidl_vec;
31using PacketReadCallback = std::function<void(const hidl_vec<uint8_t>&)>;
32
33class H4Protocol {
34 public:
35  H4Protocol(int fd, PacketReadCallback event_cb, PacketReadCallback acl_cb,
36             PacketReadCallback sco_cb)
37      : uart_fd_(fd),
38        event_cb_(event_cb),
39        acl_cb_(acl_cb),
40        sco_cb_(sco_cb),
41        hci_packetizer_([this]() { OnPacketReady(); }) {}
42
43  size_t Send(uint8_t type, const uint8_t* data, size_t length);
44
45  void OnPacketReady();
46
47  void OnDataReady(int fd);
48
49 private:
50  int uart_fd_;
51
52  PacketReadCallback event_cb_;
53  PacketReadCallback acl_cb_;
54  PacketReadCallback sco_cb_;
55
56  HciPacketType hci_packet_type_{HCI_PACKET_TYPE_UNKNOWN};
57  HciPacketizer hci_packetizer_;
58};
59
60}  // namespace hci
61}  // namespace bluetooth
62}  // namespace hardware
63}  // namespace android
64