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 <set> 20 #include "vendor_packet.h" 21 22 namespace bluetooth { 23 namespace avrcp { 24 25 class GetElementAttributesRequest : public VendorPacket { 26 public: 27 virtual ~GetElementAttributesRequest() = default; 28 29 /** 30 * Register Notificaiton Request Packet Layout 31 * AvrcpPacket: 32 * CType c_type_; 33 * uint8_t subunit_type_ : 5; 34 * uint8_t subunit_id_ : 3; 35 * Opcode opcode_; 36 * VendorPacket: 37 * uint8_t company_id[3]; 38 * uint8_t command_pdu; 39 * uint8_t packet_type; 40 * uint16_t param_length; 41 * RegisterNotificationRequestPacket: 42 * uint64_t identifier; 43 * uint8_t number_of_attributes; 44 * uint32_t attributes_requested[]; 45 */ kMinSize()46 static constexpr size_t kMinSize() { return VendorPacket::kMinSize() + 9; } 47 48 // Getter Functions 49 uint64_t GetIdentifier() const; 50 uint8_t GetNumAttributes() const; 51 std::vector<Attribute> GetAttributesRequested() const; 52 53 // Overloaded Functions 54 virtual bool IsValid() const override; 55 virtual std::string ToString() const override; 56 57 protected: 58 using VendorPacket::VendorPacket; 59 }; 60 61 class GetElementAttributesResponseBuilder : public VendorPacketBuilder { 62 public: 63 virtual ~GetElementAttributesResponseBuilder() = default; 64 65 static std::unique_ptr<GetElementAttributesResponseBuilder> MakeBuilder( 66 size_t mtu); 67 68 bool AddAttributeEntry(AttributeEntry entry); 69 bool AddAttributeEntry(Attribute attribute, std::string value); 70 71 virtual size_t size() const override; 72 virtual bool Serialize( 73 const std::shared_ptr<::bluetooth::Packet>& pkt) override; 74 75 private: 76 std::set<AttributeEntry> entries_; 77 size_t mtu_; 78 GetElementAttributesResponseBuilder(size_t mtu)79 GetElementAttributesResponseBuilder(size_t mtu) 80 : VendorPacketBuilder(CType::STABLE, CommandPdu::GET_ELEMENT_ATTRIBUTES, 81 PacketType::SINGLE), 82 mtu_(mtu){}; 83 }; 84 85 } // namespace avrcp 86 } // namespace bluetooth