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_browse_packet.h"
20 
21 namespace bluetooth {
22 namespace avrcp {
23 
24 class ChangePathResponseBuilder : public BrowsePacketBuilder {
25  public:
26   virtual ~ChangePathResponseBuilder() = default;
27 
28   static std::unique_ptr<ChangePathResponseBuilder> MakeBuilder(
29       Status status, uint32_t num_items_in_folder);
30 
31   virtual size_t size() const override;
32   virtual bool Serialize(
33       const std::shared_ptr<::bluetooth::Packet>& pkt) override;
34 
35  private:
36   Status status_;
37   uint32_t num_items_in_folder_;
38 
ChangePathResponseBuilder(Status status,uint32_t num_items_in_folder)39   ChangePathResponseBuilder(Status status, uint32_t num_items_in_folder)
40       : BrowsePacketBuilder(BrowsePdu::CHANGE_PATH),
41         status_(status),
42         num_items_in_folder_(num_items_in_folder) {}
43 };
44 
45 class ChangePathRequest : public BrowsePacket {
46  public:
47   virtual ~ChangePathRequest() = default;
48 
49   /**
50    * Avrcp Change Path Packet Layout
51    *   BrowsePacket:
52    *     uint8_t pdu_;
53    *     uint16_t length_;
54    *   ChangePathRequest:
55    *     uint16_t uid_counter_;
56    *     uint8_t direction_;
57    *     uint64_t folder_uid_;
58    */
kMinSize()59   static constexpr size_t kMinSize() { return BrowsePacket::kMinSize() + 11; }
60 
61   uint16_t GetUidCounter() const;
62   Direction GetDirection() const;
63   uint64_t GetUid() const;
64 
65   virtual bool IsValid() const override;
66   virtual std::string ToString() const override;
67 
68  protected:
69   using BrowsePacket::BrowsePacket;
70 };
71 
72 class ChangePathRequestBuilder : public BrowsePacketBuilder {
73  public:
74   virtual ~ChangePathRequestBuilder() = default;
75 
76   static std::unique_ptr<ChangePathRequestBuilder> MakeBuilder(
77       uint16_t uid_counter, Direction direction, uint64_t folder_uid);
78 
79   virtual size_t size() const override;
80   virtual bool Serialize(
81       const std::shared_ptr<::bluetooth::Packet>& pkt) override;
82 
83  private:
ChangePathRequestBuilder(uint16_t uid_counter,Direction direction,uint64_t folder_uid)84   ChangePathRequestBuilder(uint16_t uid_counter, Direction direction,
85                            uint64_t folder_uid)
86       : BrowsePacketBuilder(BrowsePdu::CHANGE_PATH),
87         uid_counter_(uid_counter),
88         direction_(direction),
89         folder_uid_(folder_uid){};
90 
91   uint16_t uid_counter_;
92   Direction direction_;
93   uint64_t folder_uid_;
94 };
95 
96 }  // namespace avrcp
97 }  // namespace bluetooth