1 /* 2 * Copyright 2018 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 "avrcp_packet.h" 20 21 namespace bluetooth { 22 namespace avrcp { 23 24 class VendorPacketBuilder : public avrcp::PacketBuilder { 25 public: 26 virtual ~VendorPacketBuilder() = default; 27 28 static std::unique_ptr<VendorPacketBuilder> MakeBuilder( 29 CType ctype, CommandPdu pdu, PacketType packet_type, 30 std::unique_ptr<::bluetooth::PacketBuilder> payload); 31 32 virtual size_t size() const override; 33 virtual bool Serialize(const std::shared_ptr<::bluetooth::Packet>& pkt) override; 34 35 protected: 36 CommandPdu pdu_; 37 PacketType packet_type_; 38 uint16_t param_length_; 39 40 void PushHeader(const std::shared_ptr<::bluetooth::Packet>& pkt, uint16_t parameter_length); 41 42 // Helper function used a couple other AVRCP packet builders 43 bool PushAttributeValue(const std::shared_ptr<::bluetooth::Packet>& pkt, 44 const AttributeEntry& entry); 45 VendorPacketBuilder(CType ctype,CommandPdu pdu,PacketType packet_type)46 VendorPacketBuilder(CType ctype, CommandPdu pdu, PacketType packet_type) 47 : PacketBuilder(ctype, 0x09, 0x00, Opcode::VENDOR), pdu_(pdu), packet_type_(packet_type) {} 48 }; 49 50 class VendorPacket : public avrcp::Packet { 51 public: 52 virtual ~VendorPacket() = default; 53 54 /** 55 * Avrcp Vendor Packet Layout 56 * AvrcpPacket: 57 * CType c_type_; 58 * uint8_t subunit_type_ : 5; 59 * uint8_t subunit_id_ : 3; 60 * Opcode opcode_; 61 * VendorPacket: 62 * uint8_t company_id[3]; 63 * uint8_t command_pdu; 64 * uint8_t packet_type; 65 * uint16_t parameter_length; 66 * uint8_t[] payload; 67 */ kMinSize()68 static constexpr size_t kMinSize() { return Packet::kMinSize() + 7; } 69 70 // Getter Functions 71 uint32_t GetCompanyId() const; 72 CommandPdu GetCommandPdu() const; 73 PacketType GetPacketType() const; 74 uint16_t GetParameterLength() const; 75 76 // Overloaded functions 77 virtual bool IsValid() const override; 78 virtual std::string ToString() const override; 79 80 protected: 81 using Packet::Packet; 82 }; 83 84 } // namespace avrcp 85 } // namespace bluetooth 86