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 <functional>
20
21#include <hidl/HidlSupport.h>
22
23#include "hci_internals.h"
24
25namespace android {
26namespace hardware {
27namespace bluetooth {
28namespace hci {
29
30using ::android::hardware::hidl_vec;
31using HciPacketReadyCallback = std::function<void(void)>;
32
33class HciPacketizer {
34 public:
35  HciPacketizer(HciPacketReadyCallback packet_cb)
36      : packet_ready_cb_(packet_cb){};
37  void OnDataReady(int fd, HciPacketType packet_type);
38  void CbHciPacket(uint8_t* data, size_t length);
39  const hidl_vec<uint8_t>& GetPacket() const;
40
41 protected:
42  enum State { HCI_PREAMBLE, HCI_PAYLOAD };
43  State state_{HCI_PREAMBLE};
44  uint8_t preamble_[HCI_PREAMBLE_SIZE_MAX];
45  hidl_vec<uint8_t> packet_;
46  size_t bytes_remaining_{0};
47  size_t bytes_read_{0};
48  HciPacketReadyCallback packet_ready_cb_;
49};
50
51}  // namespace hci
52}  // namespace bluetooth
53}  // namespace hardware
54}  // namespace android
55