91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
/***************************************************************************
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* Copyright (C) 2021 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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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 <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#ifndef M17TRANSMITTER_H
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#define M17TRANSMITTER_H
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#ifndef __cplusplus
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#error This header is C++ only!
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#endif
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#include <string>
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#include <array>
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#include "M17ConvolutionalEncoder.h"
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#include "M17LinkSetupFrame.h"
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#include "M17Frame.h"
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#include "M17Modulator.h"
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/**
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* M17 transmitter.
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*/
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class M17Transmitter
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{
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public:
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/**
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* Constructor.
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*
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* @param modulator: reference to M17 4FSK modulator driver.
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*/
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M17Transmitter(M17Modulator& modulator);
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/**
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* Destructor.
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*/
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~M17Transmitter();
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/**
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* Start a new data stream with broadcast destination callsign.
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*
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* @param src: source callsign.
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*/
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void start(const std::string& src);
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/**
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* Start a new data stream with given destination callsign. If destination
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* callsing is empty, the stream falls back to broadcast transmission.
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*
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* @param src: source callsign.
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* @param dst: destination callsign.
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*/
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void start(const std::string& src, const std::string& dst);
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/**
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* Send a block of data.
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*
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* @param payload: payload data.
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* @param isLast: if true, current frame is marked as the last one to be
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* transmitted.
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*/
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void send(const payload_t& payload, const bool isLast = false);
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private:
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M17ConvolutionalEncoder encoder; ///< Convolutional encoder.
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M17LinkSetupFrame lsf; ///< Link Setup Frame handler.
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M17Frame dataFrame; ///< Data frame Handler.
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M17Modulator& modulator; ///< 4FSK modulator.
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std::array< lich_t, 6 > lichSegments; ///< Encoded LSF chunks for LICH generation.
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uint8_t currentLich; ///< Index of current LSF chunk.
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uint16_t frameNumber; ///< Current frame number.
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};
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#endif /* M17TRANSMITTER_H */
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