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93 lines
2.4 KiB
93 lines
2.4 KiB
// Copyright © 2015 Jean-Luc Deltombe (LX3JL). All rights reserved.
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// ulxd -- The universal reflector
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// Copyright © 2021 Thomas A. Early N7TAE
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//
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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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//
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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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//
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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 <https://www.gnu.org/licenses/>.
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#pragma once
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#include "Semaphore.h"
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#include "CodecStream.h"
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#include "UDPSocket.h"
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class CPacketStream;
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class CTranscoder
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{
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public:
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// constructor
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CTranscoder();
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// destructor
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~CTranscoder();
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// initialization
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bool Init(void);
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void Close(void);
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// locks
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void Lock(void) { m_Mutex.lock(); }
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void Unlock(void) { m_Mutex.unlock(); }
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// status
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bool IsConnected(void) const { return m_bConnected; }
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// manage streams
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std::shared_ptr<CCodecStream> GetCodecStream(CPacketStream *, uint8_t);
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void ReleaseStream(std::shared_ptr<CCodecStream>);
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// task
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void Thread(void);
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void Task(void);
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protected:
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// keepalive helpers
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void HandleKeepalives(void);
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// packet decoding helpers
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bool IsValidKeepAlivePacket(const CBuffer &);
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bool IsValidStreamDescrPacket(const CBuffer &, uint16_t *, uint16_t *);
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bool IsValidNoStreamAvailablePacket(const CBuffer&);
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// packet encoding helpers
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void EncodeKeepAlivePacket(CBuffer *);
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void EncodeOpenstreamPacket(CBuffer *, uint8_t, uint8_t);
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void EncodeClosestreamPacket(CBuffer *, uint16_t);
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protected:
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// streams
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std::mutex m_Mutex;
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std::list<std::shared_ptr<CCodecStream>> m_Streams;
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// sync objects for Openstream
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CSemaphore m_SemaphoreOpenStream;
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bool m_bStreamOpened;
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uint16_t m_StreamidOpenStream;
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uint16_t m_PortOpenStream;
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// thread
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std::atomic<bool> keep_running;
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std::future<void> m_Future;
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// socket
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CIp m_Ip;
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CUdpSocket m_Socket;
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bool m_bConnected;
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// time
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CTimer m_LastKeepaliveTime;
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CTimer m_LastActivityTime;
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};
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