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Uladzimir Karpenka
2026-06-01 15:58:45 +03:00
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rnnr.h
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/* rnnr.h
This file is part of a program that implements a Software-Defined Radio.
This code/file can be found on GitHub : https://github.com/ramdor/Thetis
Copyright (C) 2000-2025 Original authors
Copyright (C) 2020-2025 Richard Samphire MW0LGE
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
mw0lge@grange-lane.co.uk
This code is based on code and ideas from : https://github.com/vu3rdd/wdsp
and and uses RNNoise and libspecbleach
https://gitlab.xiph.org/xiph/rnnoise
https://github.com/lucianodato/libspecbleach
It uses a non modified version of rmnoise and implements a ringbuffer to handle input/output frame size differences.
*/
//
//============================================================================================//
// Dual-Licensing Statement (Applies Only to Author's Contributions, Richard Samphire MW0LGE) //
// ------------------------------------------------------------------------------------------ //
// For any code originally written by Richard Samphire MW0LGE, or for any modifications //
// made by him, the copyright holder for those portions (Richard Samphire) reserves the //
// right to use, license, and distribute such code under different terms, including //
// closed-source and proprietary licences, in addition to the GNU General Public License //
// granted above. Nothing in this statement restricts any rights granted to recipients under //
// the GNU GPL. Code contributed by others (not Richard Samphire) remains licensed under //
// its original terms and is not affected by this dual-licensing statement in any way. //
// Richard Samphire can be reached by email at : mw0lge@grange-lane.co.uk //
//============================================================================================//
#ifndef _rnnr_h
#define _rnnr_h
#include "rnnoise.h"
#define FRAME_SIZE
typedef struct _rnnr_ring_buffer {
float* buf;
int capacity;
int head;
int tail;
int count;
} rnnr_ring_buffer;
typedef struct _rnnr
{
int run;
int run_old; // used when loading a new model
int position;
int frame_size;
DenoiseState *st;
double *in;
double *out;
float gain;
float gain_db;
float agc_att_a;
float agc_rel_a;
int buffer_size;
int rate;
float* output_buffer;
float* to_process_buffer;
float* processed_output_buffer;
rnnr_ring_buffer input_ring;
rnnr_ring_buffer output_ring;
CRITICAL_SECTION cs;
} rnnr, *RNNR;
extern RNNR create_rnnr (int run, int position, int size, double *in, double *out, int rate);
extern void setSize_rnnr(RNNR a, int size);
extern void setBuffers_rnnr (RNNR a, double* in, double* out);
extern void destroy_rnnr (RNNR a);
extern void xrnnr (RNNR a, int pos);
extern void setSamplerate_rnnr(RNNR a, int rate);
#endif //_rnnr_h