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 "bt_vendor_lib.h"
22 #include "hci_internals.h"
23 #include "hci_packetizer.h"
24 
25 namespace android {
26 namespace hardware {
27 namespace bluetooth {
28 namespace hci {
29 
30 using ::android::hardware::hidl_vec;
31 using PacketReadCallback = std::function<void(const hidl_vec<uint8_t>&)>;
32 
33 // Implementation of HCI protocol bits common to different transports
34 class HciProtocol {
35  public:
36   HciProtocol() = default;
~HciProtocol()37   virtual ~HciProtocol(){};
38 
39   // Protocol-specific implementation of sending packets.
40   virtual size_t Send(uint8_t type, const uint8_t* data, size_t length) = 0;
41 
42  protected:
43   static size_t WriteSafely(int fd, const uint8_t* data, size_t length);
44 };
45 
46 }  // namespace hci
47 }  // namespace bluetooth
48 }  // namespace hardware
49 }  // namespace android
50