xref: /aosp_15_r20/hardware/interfaces/bluetooth/hci/hci_packetizer.h (revision 4d7e907c777eeecc4c5bd7cf640a754fac206ff7)
1*4d7e907cSAndroid Build Coastguard Worker /*
2*4d7e907cSAndroid Build Coastguard Worker  * Copyright 2022 The Android Open Source Project
3*4d7e907cSAndroid Build Coastguard Worker  *
4*4d7e907cSAndroid Build Coastguard Worker  * Licensed under the Apache License, Version 2.0 (the "License");
5*4d7e907cSAndroid Build Coastguard Worker  * you may not use this file except in compliance with the License.
6*4d7e907cSAndroid Build Coastguard Worker  * You may obtain a copy of the License at
7*4d7e907cSAndroid Build Coastguard Worker  *
8*4d7e907cSAndroid Build Coastguard Worker  *      http://www.apache.org/licenses/LICENSE-2.0
9*4d7e907cSAndroid Build Coastguard Worker  *
10*4d7e907cSAndroid Build Coastguard Worker  * Unless required by applicable law or agreed to in writing, software
11*4d7e907cSAndroid Build Coastguard Worker  * distributed under the License is distributed on an "AS IS" BASIS,
12*4d7e907cSAndroid Build Coastguard Worker  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*4d7e907cSAndroid Build Coastguard Worker  * See the License for the specific language governing permissions and
14*4d7e907cSAndroid Build Coastguard Worker  * limitations under the License.
15*4d7e907cSAndroid Build Coastguard Worker  */
16*4d7e907cSAndroid Build Coastguard Worker 
17*4d7e907cSAndroid Build Coastguard Worker #pragma once
18*4d7e907cSAndroid Build Coastguard Worker 
19*4d7e907cSAndroid Build Coastguard Worker #include <functional>
20*4d7e907cSAndroid Build Coastguard Worker #include <memory>
21*4d7e907cSAndroid Build Coastguard Worker #include <vector>
22*4d7e907cSAndroid Build Coastguard Worker 
23*4d7e907cSAndroid Build Coastguard Worker #include "hci_internals.h"
24*4d7e907cSAndroid Build Coastguard Worker 
25*4d7e907cSAndroid Build Coastguard Worker namespace android::hardware::bluetooth::hci {
26*4d7e907cSAndroid Build Coastguard Worker 
27*4d7e907cSAndroid Build Coastguard Worker class HciPacketizer {
28*4d7e907cSAndroid Build Coastguard Worker  public:
29*4d7e907cSAndroid Build Coastguard Worker   HciPacketizer() = default;
30*4d7e907cSAndroid Build Coastguard Worker   bool OnDataReady(PacketType packet_type, const std::vector<uint8_t>& data,
31*4d7e907cSAndroid Build Coastguard Worker                    size_t* offset);
32*4d7e907cSAndroid Build Coastguard Worker   const std::vector<uint8_t>& GetPacket() const;
33*4d7e907cSAndroid Build Coastguard Worker 
34*4d7e907cSAndroid Build Coastguard Worker  protected:
35*4d7e907cSAndroid Build Coastguard Worker   enum State { HCI_HEADER, HCI_PAYLOAD };
36*4d7e907cSAndroid Build Coastguard Worker   State state_{HCI_HEADER};
37*4d7e907cSAndroid Build Coastguard Worker   std::vector<uint8_t> packet_;
38*4d7e907cSAndroid Build Coastguard Worker   size_t bytes_remaining_{0};
39*4d7e907cSAndroid Build Coastguard Worker };
40*4d7e907cSAndroid Build Coastguard Worker 
41*4d7e907cSAndroid Build Coastguard Worker }  // namespace android::hardware::bluetooth::hci
42