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FMControl.h
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FMControl.h
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/*
* Copyright (C) 2020,2021 by Jonathan Naylor G4KLX
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined(FMControl_H)
#define FMControl_H
#include "FMNetwork.h"
#include "Defines.h"
#include "IIRDirectForm1Filter.h"
// Uncomment this to dump audio to a raw audio file
// The file will be written in same folder as executable
// Toplay the file : ffplay -autoexit -f u16be -ar 8000 audiodump.bin
// #define DUMP_RF_AUDIO
class CFMControl {
public:
CFMControl(CFMNetwork* network, float txAudioGain, float rxAudioGain, bool preEmphasisOn, bool deEmphasisOn);
~CFMControl();
bool writeModem(const unsigned char* data, unsigned int length);
unsigned int readModem(unsigned char* data, unsigned int space);
void clock(unsigned int ms);
void enable(bool enabled);
private:
CFMNetwork* m_network;
float m_txAudioGain;
float m_rxAudioGain;
bool m_preEmphasisOn;
bool m_deEmphasisOn;
bool m_enabled;
CRingBuffer<unsigned char> m_incomingRFAudio;
CIIRDirectForm1Filter* m_preEmphasis;
CIIRDirectForm1Filter* m_deEmphasis;
CIIRDirectForm1Filter* m_filterStage1;
CIIRDirectForm1Filter* m_filterStage2;
CIIRDirectForm1Filter* m_filterStage3;
};
#endif