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 #include "avrcp_browse_packet.h" 18 19 #include <base/logging.h> 20 21 namespace bluetooth { 22 namespace avrcp { 23 24 std::unique_ptr<BrowsePacketBuilder> BrowsePacketBuilder::MakeBuilder( 25 BrowsePdu pdu, std::unique_ptr<::bluetooth::PacketBuilder> payload) { 26 std::unique_ptr<BrowsePacketBuilder> builder = 27 std::unique_ptr<BrowsePacketBuilder>(new BrowsePacketBuilder(pdu)); 28 29 builder->payload_ = std::move(payload); 30 31 return builder; 32 } 33 34 size_t BrowsePacketBuilder::size() const { 35 return BrowsePacket::kMinSize() + payload_->size(); 36 } 37 38 bool BrowsePacketBuilder::Serialize( 39 const std::shared_ptr<::bluetooth::Packet>& pkt) { 40 ReserveSpace(pkt, size()); 41 42 PushHeader(pkt, payload_->size()); 43 44 return payload_->Serialize(pkt); 45 } 46 47 void BrowsePacketBuilder::PushHeader( 48 const std::shared_ptr<::bluetooth::Packet>& pkt, uint16_t length) { 49 AddPayloadOctets1(pkt, (uint8_t)pdu_); 50 AddPayloadOctets2(pkt, base::ByteSwap(length)); 51 } 52 53 std::shared_ptr<BrowsePacket> BrowsePacket::Parse( 54 std::shared_ptr<::bluetooth::Packet> pkt) { 55 return std::shared_ptr<BrowsePacket>(new BrowsePacket(pkt)); 56 } 57 58 BrowsePdu BrowsePacket::GetPdu() const { 59 return static_cast<BrowsePdu>(*begin()); 60 } 61 62 uint16_t BrowsePacket::GetLength() const { 63 auto it = begin() + static_cast<size_t>(1); 64 return base::ByteSwap(it.extract<uint16_t>()); 65 } 66 67 bool BrowsePacket::IsValid() const { 68 if (size() < kMinSize()) return false; 69 return size() == GetLength() + kMinSize(); 70 } 71 72 std::string BrowsePacket::ToString() const { 73 std::stringstream ss; 74 ss << "AvrcpBrowsePacket: " << std::endl; 75 ss << " PDU = " << GetPdu() << std::endl; 76 ss << " Length = " << GetLength() << std::endl; 77 ss << " Payload ="; 78 for (auto it = begin() + static_cast<size_t>(3); it != end(); it++) { 79 ss << " " << loghex(*it); 80 } 81 ss << std::endl; 82 83 return ss.str(); 84 } 85 86 std::pair<size_t, size_t> BrowsePacket::GetPayloadIndecies() const { 87 return std::pair<size_t, size_t>(packet_start_index_ + 3, packet_end_index_); 88 } 89 90 } // namespace avrcp 91 } // namespace bluetooth
