mirror of
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89 lines
2.8 KiB
C++
89 lines
2.8 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2025 Johannes Pohl
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#pragma once
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// local headers
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#include "client_info.hpp"
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#include "codec_header.hpp"
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#include "hello.hpp"
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#include "pcm_chunk.hpp"
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#include "server_settings.hpp"
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#include "time.hpp"
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namespace msg
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{
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/// Cast a BaseMessage @message to type "ToType"
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/// @return castest message or nullptr, if the cast failed
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template <typename ToType>
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static std::unique_ptr<ToType> message_cast(std::unique_ptr<msg::BaseMessage> message)
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{
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auto* tmp = dynamic_cast<ToType*>(message.get());
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if (tmp != nullptr)
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{
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message.release();
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std::unique_ptr<ToType> result(tmp);
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return result;
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}
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return nullptr;
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}
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namespace factory
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{
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/// Create a message of type T from @p base_message beaser and payload @p buffer
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template <typename T>
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static std::unique_ptr<T> createMessage(const BaseMessage& base_message, char* buffer)
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{
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std::unique_ptr<T> result = std::make_unique<T>();
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if (!result)
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return nullptr;
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result->deserialize(base_message, buffer);
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return result;
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}
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/// Create a BaseMessage from @p base_message header and payload @p buffer
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static std::unique_ptr<BaseMessage> createMessage(const BaseMessage& base_message, char* buffer)
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{
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std::unique_ptr<BaseMessage> result;
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switch (base_message.type)
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{
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case message_type::kCodecHeader:
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return createMessage<CodecHeader>(base_message, buffer);
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case message_type::kHello:
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return createMessage<Hello>(base_message, buffer);
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case message_type::kServerSettings:
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return createMessage<ServerSettings>(base_message, buffer);
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case message_type::kTime:
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return createMessage<Time>(base_message, buffer);
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case message_type::kWireChunk:
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// this is kind of cheated to safe the convertion from WireChunk to PcmChunk
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// the user of the factory must be aware that a PcmChunk will be created
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return createMessage<PcmChunk>(base_message, buffer);
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case message_type::kClientInfo:
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return createMessage<ClientInfo>(base_message, buffer);
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default:
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return nullptr;
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}
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}
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} // namespace factory
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} // namespace msg
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