mirror of
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122 lines
4.0 KiB
C++
122 lines
4.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015 F4EXB //
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// written by Edouard Griffiths //
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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 INCLUDE_UTIL_UDPSINK_H_
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#define INCLUDE_UTIL_UDPSINK_H_
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#include <stdint.h>
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#include <QObject>
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#include <QUdpSocket>
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#include <QHostAddress>
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#include <cassert>
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template<typename T>
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class UDPSink
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{
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public:
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UDPSink(QObject *parent, unsigned int udpSize, unsigned int port) :
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m_udpSize(udpSize),
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m_udpSamples(udpSize/sizeof(T)),
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m_address(QHostAddress::LocalHost),
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m_port(port),
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m_sampleBufferIndex(0)
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{
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assert(m_udpSamples > 0);
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m_sampleBuffer = new T[m_udpSamples];
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m_socket = new QUdpSocket(parent);
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}
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UDPSink (QObject *parent, unsigned int udpSize, QHostAddress& address, unsigned int port) :
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m_udpSize(udpSize),
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m_udpSamples(udpSize/sizeof(T)),
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m_address(address),
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m_port(port),
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m_sampleBufferIndex(0)
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{
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assert(m_udpSamples > 0);
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m_sampleBuffer = new T[m_udpSamples];
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m_socket = new QUdpSocket(parent);
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}
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~UDPSink()
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{
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delete[] m_sampleBuffer;
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delete m_socket;
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}
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void setAddress(QString& address) { m_address.setAddress(address); }
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void setPort(unsigned int port) { m_port = port; }
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/**
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* Write one sample
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*/
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void write(T sample)
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{
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if (m_sampleBufferIndex < m_udpSamples)
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{
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m_sampleBuffer[m_sampleBufferIndex] = sample;
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m_sampleBufferIndex++;
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}
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else
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{
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m_socket->writeDatagram((const char*)&m_sampleBuffer[0], (qint64 ) m_udpSize, m_address, m_port);
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m_sampleBuffer[0] = sample;
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m_sampleBufferIndex = 1;
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}
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}
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/**
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* Write a bunch of samples
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*/
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void write(T *samples, int nbSamples)
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{
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int samplesIndex = 0;
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if (m_sampleBufferIndex + nbSamples > m_udpSamples) // fill remainder of buffer and send it
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{
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memcpy(&m_sampleBuffer[m_sampleBufferIndex], &samples[samplesIndex], (m_udpSamples - m_sampleBufferIndex)*sizeof(T)); // fill remainder of buffer
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m_socket->writeDatagram((const char*)&m_sampleBuffer[0], (qint64 ) m_udpSize, m_address, m_port); // send buffer
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samplesIndex += (m_udpSamples - m_sampleBufferIndex);
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nbSamples -= (m_udpSamples - m_sampleBufferIndex);
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m_sampleBufferIndex = 0;
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}
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while (nbSamples > m_udpSamples) // send directly from input without buffering
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{
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m_socket->writeDatagram((const char*)&samples[samplesIndex], (qint64 ) m_udpSize, m_address, m_port);
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samplesIndex += m_udpSamples;
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nbSamples -= m_udpSamples;
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}
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memcpy(&m_sampleBuffer[m_sampleBufferIndex], &samples[samplesIndex], nbSamples*sizeof(T)); // copy remainder of input to buffer
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}
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private:
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int m_udpSize;
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int m_udpSamples;
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QHostAddress m_address;
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unsigned int m_port;
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QUdpSocket *m_socket;
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T *m_sampleBuffer;;
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int m_sampleBufferIndex;
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};
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#endif /* INCLUDE_UTIL_UDPSINK_H_ */
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