mirror of https://github.com/f4exb/sdrangel.git
90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2017 Edouard Griffiths, F4EXB //
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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 as version 3 of the License, or //
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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 V3 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 <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef PLUGINS_CHANNELTX_UDPSINK_UDPSINKUDPHANDLER_H_
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#define PLUGINS_CHANNELTX_UDPSINK_UDPSINKUDPHANDLER_H_
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#include <QObject>
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#include <QUdpSocket>
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#include <QHostAddress>
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#include <QMutex>
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#include "dsp/dsptypes.h"
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class MessageQueue;
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class UDPSinkUDPHandler : public QObject
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{
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Q_OBJECT
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public:
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UDPSinkUDPHandler();
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virtual ~UDPSinkUDPHandler();
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void start();
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void stop();
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void configureUDPLink(const QString& address, quint16 port);
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void resetReadIndex();
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void resizeBuffer(float sampleRate);
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void readSample(Real &t);
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void readSample(Sample &s);
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void setFeedbackMessageQueue(MessageQueue *messageQueue) { m_feedbackMessageQueue = messageQueue; }
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/** Get buffer gauge value in % of buffer size ([-50:50])
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* [-50:0] : write leads or read lags
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* [0:50] : read leads or write lags
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*/
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inline int32_t getBufferGauge() const
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{
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int32_t val = m_rwDelta - (m_nbUDPFrames/2);
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return (100*val) / m_nbUDPFrames;
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}
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static const int m_udpBlockSize = 512; // UDP block size in number of bytes
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static const int m_minNbUDPFrames = 256; // number of frames of block size in the UDP buffer
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public slots:
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void dataReadyRead();
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private:
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typedef char (udpBlk_t)[m_udpBlockSize];
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void moveData();
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void advanceReadPointer(int nbBytes);
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QUdpSocket *m_dataSocket;
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QHostAddress m_dataAddress;
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QHostAddress m_remoteAddress;
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quint16 m_dataPort;
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bool m_dataConnected;
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udpBlk_t m_udpTmpBuf;
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qint64 m_udpReadBytes;
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udpBlk_t *m_udpBuf;
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int m_nbUDPFrames;
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int m_nbAllocatedUDPFrames;
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int m_writeIndex;
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int m_readFrameIndex;
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int m_readIndex;
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int m_rwDelta;
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float m_d;
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MessageQueue *m_feedbackMessageQueue;
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};
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#endif /* PLUGINS_CHANNELTX_UDPSINK_UDPSINKUDPHANDLER_H_ */
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