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(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<GetItemAttributesResponseBuilder>; 62 GetItemAttributesResponseBuilder(Status status,size_t mtu)63 GetItemAttributesResponseBuilder(Status status, size_t mtu) 64 : BrowsePacketBuilder(BrowsePdu::GET_ITEM_ATTRIBUTES), status_(status), mtu_(mtu) {} 65 }; 66 67 class GetItemAttributesRequest : public BrowsePacket { 68 public: 69 virtual ~GetItemAttributesRequest() = default; 70 71 /** 72 * Avrcp Change Path Packet Layout 73 * BrowsePacket: 74 * uint8_t pdu_; 75 * uint16_t length_; 76 * GetItemAttributesRequest: 77 * uint8_t scope_; 78 * uint64_t uid_; 79 * uint16_t uid_counter_; 80 * uint8_t attr_count_; 81 * uint32_t[] attr_requested_; 82 */ kMinSize()83 static constexpr size_t kMinSize() { return BrowsePacket::kMinSize() + 12; } 84 85 Scope GetScope() const; 86 uint64_t GetUid() const; 87 uint16_t GetUidCounter() const; 88 uint8_t GetNumAttributes() const; // If this value is zero, then all attributes are requested 89 std::vector<Attribute> GetAttributesRequested() const; 90 91 virtual bool IsValid() const override; 92 virtual std::string ToString() const override; 93 94 protected: 95 using BrowsePacket::BrowsePacket; 96 }; 97 98 } // namespace avrcp 99 } // namespace bluetooth 100