| /* |
| * Copyright 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include <base/logging.h> |
| #include <base/macros.h> |
| #include <iostream> |
| |
| #include "hardware/avrcp/avrcp_common.h" |
| #include "hardware/avrcp/avrcp_logging_helper.h" |
| #include "packet/base/iterator.h" |
| #include "packet/base/packet.h" |
| #include "packet/base/packet_builder.h" |
| |
| namespace bluetooth { |
| namespace avrcp { |
| |
| class PacketBuilder : public ::bluetooth::PacketBuilder { |
| public: |
| virtual ~PacketBuilder() = default; |
| |
| static std::unique_ptr<PacketBuilder> MakeBuilder( |
| CType cType, uint8_t subunit_type, uint8_t subunit_id, Opcode opcode, |
| std::unique_ptr<::bluetooth::PacketBuilder> packet); |
| |
| virtual size_t size() const override; |
| virtual bool Serialize( |
| const std::shared_ptr<::bluetooth::Packet>& pkt) override; |
| |
| protected: |
| CType c_type_; |
| uint8_t subunit_type_ : 5; |
| uint8_t subunit_id_ : 3; |
| Opcode opcode_; |
| std::unique_ptr<::bluetooth::PacketBuilder> payload_; |
| |
| void PushHeader(const std::shared_ptr<::bluetooth::Packet>& pkt); |
| bool PushCompanyId(const std::shared_ptr<::bluetooth::Packet>& pkt, |
| uint32_t company_id); |
| |
| PacketBuilder(CType type, uint8_t subunit_type, uint8_t subunit_id, |
| Opcode opcode) |
| : c_type_(type), |
| subunit_type_(subunit_type), |
| subunit_id_(subunit_id), |
| opcode_(opcode){}; |
| }; |
| |
| class Packet : public ::bluetooth::Packet { |
| public: |
| virtual ~Packet() = default; |
| |
| // TODO (apanicke): Right now we can use this to build an AvrcpPacket from |
| // another packet type. In the future, we can remove this in favor of |
| // getting an AVRCP Packet directly from an AVCTP Packet |
| static std::shared_ptr<Packet> Parse( |
| std::shared_ptr<::bluetooth::Packet> pkt); |
| |
| /** |
| * Avrcp Packet Layout |
| * CType c_type_; |
| * uint8_t subunit_type_ : 5; |
| * uint8_t subunit_id_ : 3; |
| * Opcode opcode_; |
| * uint8_t[] payload_; |
| */ |
| static constexpr size_t kMinSize() { return 3; }; |
| |
| // Getter Functions |
| CType GetCType() const; |
| uint8_t GetSubunitType() const; |
| uint8_t GetSubunitId() const; |
| Opcode GetOpcode() const; |
| |
| // Overloaded Functions |
| virtual bool IsValid() const override; |
| virtual std::string ToString() const override; |
| |
| protected: |
| using ::bluetooth::Packet::Packet; |
| |
| static inline uint32_t PullCompanyId(Iterator it) { |
| uint32_t value = 0; |
| for (int i = 0; i < 3; i++) { |
| value <<= 8; |
| value |= *it++; |
| } |
| return value; |
| } |
| |
| private: |
| virtual std::pair<size_t, size_t> GetPayloadIndecies() const override; |
| DISALLOW_COPY_AND_ASSIGN(Packet); |
| }; |
| |
| } // namespace avrcp |
| } // namespace bluetooth |