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103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
/* varsamp.h
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2017 Warren Pratt, NR0V
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Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel
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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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#ifndef wdsp_varsamp_h
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#define wdsp_varsamp_h
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#include "export.h"
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namespace WDSP {
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class WDSP_API VARSAMP
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{
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public:
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int run;
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int size;
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float* in;
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float* out;
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int in_rate;
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int out_rate;
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float fcin;
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float fc;
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float fc_low;
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float gain;
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int idx_in;
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int ncoef;
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float* h;
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int rsize;
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float* ring;
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float var;
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int varmode;
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float cvar;
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float inv_cvar;
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float old_inv_cvar;
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float dicvar;
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float delta;
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float* hs;
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int R;
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float h_offset;
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float isamps;
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float nom_ratio;
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static VARSAMP* create_varsamp (
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int run,
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int size,
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float* in,
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float* out,
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int in_rate,
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int out_rate,
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float fc,
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float fc_low,
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int R,
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float gain,
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float var,
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int varmode
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);
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static void destroy_varsamp (VARSAMP *a);
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static void flush_varsamp (VARSAMP *a);
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static int xvarsamp (VARSAMP *a, float var);
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static void setBuffers_varsamp (VARSAMP *a, float* in, float* out);
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static void setSize_varsamp (VARSAMP *a, int size);
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static void setInRate_varsamp (VARSAMP *a, int rate);
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static void setOutRate_varsamp (VARSAMP *a, int rate);
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static void setFCLow_varsamp (VARSAMP *a, float fc_low);
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static void setBandwidth_varsamp (VARSAMP *a, float fc_low, float fc_high);
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// Exported calls
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static void* create_varsampV (int in_rate, int out_rate, int R);
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static void xvarsampV (float* input, float* output, int numsamps, float var, int* outsamps, void* ptr);
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static void destroy_varsampV (void* ptr);
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private:
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static void calc_varsamp (VARSAMP *a);
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static void decalc_varsamp (VARSAMP *a);
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static void hshift (VARSAMP *a);
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};
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} // namespace WDSP
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#endif
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