mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-13 20:01:46 -05:00
200 lines
6.8 KiB
C++
200 lines
6.8 KiB
C++
/* rmatch.h
|
|
|
|
This file is part of a program that implements a Software-Defined Radio.
|
|
|
|
Copyright (C) 2017, 2022 Warren Pratt, NR0V
|
|
Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel
|
|
|
|
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
The author can be reached by email at
|
|
|
|
warren@wpratt.com
|
|
|
|
*/
|
|
|
|
#ifndef wdsp_rmatch_h
|
|
#define wdsp_rmatch_h
|
|
|
|
#include <atomic>
|
|
#include <QRecursiveMutex>
|
|
|
|
#include "export.h"
|
|
|
|
namespace WDSP {
|
|
|
|
class VARSAMP;
|
|
|
|
class WDSP_API MAV
|
|
{
|
|
public:
|
|
int ringmin;
|
|
int ringmax; // must be a power of two
|
|
int* ring;
|
|
int mask;
|
|
int i;
|
|
int load;
|
|
int sum;
|
|
float nom_value;
|
|
|
|
static MAV* create_mav (int ringmin, int ringmax, float nom_value);
|
|
static void destroy_mav (MAV *a);
|
|
static void flush_mav (MAV *a);
|
|
static void xmav (MAV *a, int input, float* output);
|
|
};
|
|
|
|
class WDSP_API AAMAV
|
|
{
|
|
public:
|
|
int ringmin;
|
|
int ringmax; // must be a power of two
|
|
int* ring;
|
|
int mask;
|
|
int i;
|
|
int load;
|
|
int pos;
|
|
int neg;
|
|
float nom_ratio;
|
|
|
|
static AAMAV* create_aamav (int ringmin, int ringmax, float nom_ratio);
|
|
static void destroy_aamav (AAMAV *a);
|
|
static void flush_aamav (AAMAV *a);
|
|
static void xaamav (AAMAV *a, int input, float* output);
|
|
};
|
|
|
|
class WDSP_API RMATCH
|
|
{
|
|
public:
|
|
std::atomic<long> run;
|
|
float* in;
|
|
float* out;
|
|
int insize;
|
|
int outsize;
|
|
float* resout;
|
|
int nom_inrate;
|
|
int nom_outrate;
|
|
float nom_ratio;
|
|
float inv_nom_ratio;
|
|
float fc_high;
|
|
float fc_low;
|
|
float gain;
|
|
float startup_delay;
|
|
int auto_ringsize;
|
|
int ringsize;
|
|
int rsize;
|
|
float* ring;
|
|
int n_ring;
|
|
int iin;
|
|
int iout;
|
|
float var;
|
|
int R;
|
|
AAMAV *ffmav;
|
|
MAV *propmav;
|
|
int ff_ringmin;
|
|
int ff_ringmax; // must be a power of two
|
|
float ff_alpha;
|
|
float feed_forward;
|
|
int prop_ringmin;
|
|
int prop_ringmax; // must be a power of two
|
|
float prop_gain;
|
|
float pr_gain;
|
|
float av_deviation;
|
|
VARSAMP *v;
|
|
int varmode;
|
|
QRecursiveMutex cs_ring;
|
|
QRecursiveMutex cs_var;
|
|
// blend / slew
|
|
float tslew;
|
|
int ntslew;
|
|
float* cslew;
|
|
float* baux;
|
|
float dlast[2];
|
|
int ucnt;
|
|
// variables to check start-up time for control to become active
|
|
unsigned int readsamps;
|
|
unsigned int writesamps;
|
|
unsigned int read_startup;
|
|
unsigned int write_startup;
|
|
int control_flag;
|
|
// diagnostics
|
|
std::atomic<long> underflows;
|
|
std::atomic<long> overflows;
|
|
int force;
|
|
float fvar;
|
|
|
|
static RMATCH* create_rmatch (
|
|
int run, // 0 - input and output calls do nothing; 1 - operates normally
|
|
float* in, // pointer to input buffer
|
|
float* out, // pointer to output buffer
|
|
int insize, // size of input buffer
|
|
int outsize, // size of output buffer
|
|
int nom_inrate, // nominal input samplerate
|
|
int nom_outrate, // nominal output samplerate
|
|
float fc_high, // high cutoff frequency if lower than max
|
|
float fc_low, // low cutoff frequency if higher than zero
|
|
float gain, // gain to be applied during this process
|
|
float startup_delay, // time (seconds) to delay before beginning measurements to control variable resampler
|
|
int auto_ringsize, // 0 specified ringsize is used; 1 ringsize is auto-optimized - FEATURE NOT IMPLEMENTED!!
|
|
int ringsize, // specified ringsize; max ringsize if 'auto' is enabled
|
|
int R, // density factor for varsamp coefficients
|
|
float var, // initial value of variable resampler ratio (value of ~1.0)
|
|
int ffmav_min, // minimum feed-forward moving average size to put full weight on data in the ring
|
|
int ffmav_max, // maximum feed-forward moving average size - MUST BE A POWER OF TWO!
|
|
float ff_alpha, // feed-forward exponential averaging multiplier
|
|
int prop_ringmin, // proportional feedback min moving average ringsize
|
|
int prop_ringmax, // proportional feedback max moving average ringsize - MUST BE A POWER OF TWO!
|
|
float prop_gain, // proportional feedback gain factor
|
|
int varmode, // 0 - use same var for all samples of the buffer; 1 - interpolate from old_var to this var
|
|
float tslew // slew/blend time (seconds)
|
|
);
|
|
static void destroy_rmatch (RMATCH *a);
|
|
static void reset_rmatch (RMATCH *a);
|
|
|
|
static void* create_rmatchV(int in_size, int out_size, int nom_inrate, int nom_outrate, int ringsize, float var);
|
|
static void* create_rmatchLegacyV(int in_size, int out_size, int nom_inrate, int nom_outrate, int ringsize);
|
|
static void destroy_rmatchV (void* ptr);
|
|
static void xrmatchOUT (void* b, float* out);
|
|
static void xrmatchIN (void* b, float* in);
|
|
static void setRMatchInsize (void* ptr, int insize);
|
|
static void setRMatchOutsize (void* ptr, int outsize);
|
|
static void setRMatchNomInrate (void* ptr, int nom_inrate);
|
|
static void setRMatchNomOutrate (void* ptr, int nom_outrate);
|
|
static void setRMatchRingsize (void* ptr, int ringsize);
|
|
static void getRMatchDiags (void* b, int* underflows, int* overflows, float* var, int* ringsize, int* nring);
|
|
static void resetRMatchDiags (void* b);
|
|
static void forceRMatchVar (void* b, int force, float fvar);
|
|
static void setRMatchFeedbackGain(void* b, float feedback_gain);
|
|
static void setRMatchSlewTime(void* b, float slew_time);
|
|
static void setRMatchSlewTime1(void* b, float slew_time);
|
|
static void setRMatchPropRingMin(void* ptr, int prop_min);
|
|
static void setRMatchPropRingMax(void* ptr, int prop_max);
|
|
static void setRMatchFFRingMin(void* ptr, int ff_ringmin);
|
|
static void setRMatchFFRingMax(void* ptr, int ff_ringmax);
|
|
static void setRMatchFFAlpha(void* ptr, float ff_alpha);
|
|
static void getControlFlag(void* ptr, int* control_flag);
|
|
|
|
private:
|
|
static void calc_rmatch (RMATCH *a);
|
|
static void decalc_rmatch (RMATCH *a);
|
|
static void control (RMATCH *a, int change);
|
|
static void blend (RMATCH *a);
|
|
static void upslew (RMATCH *a, int newsamps);
|
|
static void dslew (RMATCH *a);
|
|
};
|
|
|
|
} // namespace WDSP
|
|
|
|
#endif
|