117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/* emph.h
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2014, 2016, 2023 Warren Pratt, NR0V
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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The author can be reached by email at
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warren@wpratt.com
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*/
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/********************************************************************************************************
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* *
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* Partitioned Overlap-Save FM Pre-Emphasis *
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* *
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********************************************************************************************************/
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#ifndef _emphp_h
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#define _emphp_h
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#include "firmin.h"
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typedef struct _emphp
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{
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int run;
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int position;
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int size;
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int nc;
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int mp;
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double* in;
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double* out;
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int ctype;
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double f_low;
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double f_high;
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double rate;
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FIRCORE p;
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} emphp, *EMPHP;
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extern EMPHP create_emphp (int run, int position, int size, int nc, int mp,
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double* in, double* out, int rate, int ctype, double f_low, double f_high);
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extern void destroy_emphp (EMPHP a);
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extern void flush_emphp (EMPHP a);
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extern void xemphp (EMPHP a, int position);
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extern void setBuffers_emphp (EMPHP a, double* in, double* out);
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extern void setSamplerate_emphp (EMPHP a, int rate);
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extern void setSize_emphp (EMPHP a, int size);
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__declspec (dllexport) void SetTXAFMEmphMP (int channel, int mp);
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__declspec (dllexport) void SetTXAFMEmphNC (int channel, int nc);
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__declspec (dllexport) void SetTXAFMPreEmphFreqs(int channel, double low, double high);
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#endif
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/********************************************************************************************************
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* *
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* Overlap-Save FM Pre-Emphasis *
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* *
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********************************************************************************************************/
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#ifndef _emph_h
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#define _emph_h
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typedef struct _emph
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{
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int run;
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int position;
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int size;
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double* in;
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double* out;
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int ctype;
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double f_low;
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double f_high;
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double* infilt;
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double* product;
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double* mults;
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double rate;
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fftw_plan CFor;
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fftw_plan CRev;
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} emph, *EMPH;
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extern EMPH create_emph (int run, int position, int size, double* in, double* out, int rate, int ctype, double f_low, double f_high);
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extern void destroy_emph (EMPH a);
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extern void flush_emph (EMPH a);
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extern void xemph (EMPH a, int position);
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extern void setBuffers_emph (EMPH a, double* in, double* out);
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extern void setSamplerate_emph (EMPH a, int rate);
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extern void setSize_emph (EMPH a, int size);
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#endif
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