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( 34 const std::shared_ptr<::bluetooth::Packet>& pkt) override; 35 36 protected: 37 CommandPdu pdu_; 38 PacketType packet_type_; 39 uint16_t param_length_; 40 41 void PushHeader(const std::shared_ptr<::bluetooth::Packet>& pkt, 42 uint16_t parameter_length); 43 44 // Helper function used a couple other AVRCP packet builders 45 bool PushAttributeValue(const std::shared_ptr<::bluetooth::Packet>& pkt, 46 const AttributeEntry& entry); 47 48 VendorPacketBuilder(CType ctype, CommandPdu pdu, PacketType packet_type) 49 : PacketBuilder(ctype, 0x09, 0x00, Opcode::VENDOR), 50 pdu_(pdu), 51 packet_type_(packet_type){}; 52 }; 53 54 class VendorPacket : public avrcp::Packet { 55 public: 56 virtual ~VendorPacket() = default; 57 58 /** 59 * Avrcp Vendor Packet Layout 60 * AvrcpPacket: 61 * CType c_type_; 62 * uint8_t subunit_type_ : 5; 63 * uint8_t subunit_id_ : 3; 64 * Opcode opcode_; 65 * VendorPacket: 66 * uint8_t company_id[3]; 67 * uint8_t command_pdu; 68 * uint8_t packet_type; 69 * uint16_t parameter_length; 70 * uint8_t[] payload; 71 */ 72 static constexpr size_t kMinSize() { return Packet::kMinSize() + 7; }; 73 74 // Getter Functions 75 uint32_t GetCompanyId() const; 76 CommandPdu GetCommandPdu() const; 77 PacketType GetPacketType() const; 78 uint16_t GetParameterLength() const; 79 80 // Overloaded functions 81 virtual bool IsValid() const override; 82 virtual std::string ToString() const override; 83 84 protected: 85 using Packet::Packet; 86 }; 87 88 } // namespace avrcp 89 } // namespace bluetooth
