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