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 <vector> 21 22 #include "avrcp_browse_packet.h" 23 24 namespace bluetooth { 25 namespace avrcp { 26 27 template <class Builder> 28 class AttributesResponseBuilderTestUser; 29 30 class GetItemAttributesResponseBuilder : public BrowsePacketBuilder { 31 public: 32 virtual ~GetItemAttributesResponseBuilder() = default; 33 using Builder = std::unique_ptr<GetItemAttributesResponseBuilder>; 34 static Builder MakeBuilder(Status status, size_t mtu); 35 36 size_t AddAttributeEntry(AttributeEntry entry); 37 size_t AddAttributeEntry(Attribute, const std::string&); 38 clear()39 virtual void clear() { entries_.clear(); } 40 kHeaderSize()41 static constexpr size_t kHeaderSize() { 42 size_t len = BrowsePacket::kMinSize(); 43 len += 1; // Status 44 len += 1; // Number of attributes 45 return len; 46 } 47 kErrorHeaderSize()48 static constexpr size_t kErrorHeaderSize() { 49 size_t len = BrowsePacket::kMinSize(); 50 len += 1; // Status 51 return len; 52 } 53 54 virtual size_t size() const override; 55 virtual bool Serialize( 56 const std::shared_ptr<::bluetooth::Packet>& pkt) override; 57 58 private: 59 Status status_; 60 size_t mtu_; 61 std::set<AttributeEntry> entries_; 62 friend class AttributesResponseBuilderTestUser< 63 GetItemAttributesResponseBuilder>; 64 GetItemAttributesResponseBuilder(Status status,size_t mtu)65 GetItemAttributesResponseBuilder(Status status, size_t mtu) 66 : BrowsePacketBuilder(BrowsePdu::GET_ITEM_ATTRIBUTES), 67 status_(status), 68 mtu_(mtu) {} 69 }; 70 71 class GetItemAttributesRequest : public BrowsePacket { 72 public: 73 virtual ~GetItemAttributesRequest() = default; 74 75 /** 76 * Avrcp Change Path Packet Layout 77 * BrowsePacket: 78 * uint8_t pdu_; 79 * uint16_t length_; 80 * GetItemAttributesRequest: 81 * uint8_t scope_; 82 * uint64_t uid_; 83 * uint16_t uid_counter_; 84 * uint8_t attr_count_; 85 * uint32_t[] attr_requested_; 86 */ kMinSize()87 static constexpr size_t kMinSize() { return BrowsePacket::kMinSize() + 12; } 88 89 Scope GetScope() const; 90 uint64_t GetUid() const; 91 uint16_t GetUidCounter() const; 92 uint8_t GetNumAttributes() 93 const; // If this value is zero, then all attributes are requested 94 std::vector<Attribute> GetAttributesRequested() const; 95 96 virtual bool IsValid() const override; 97 virtual std::string ToString() const override; 98 99 protected: 100 using BrowsePacket::BrowsePacket; 101 }; 102 103 } // namespace avrcp 104 } // namespace bluetooth 105