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