81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
/* snnr.h
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This file is part of a program that implements a Software-Defined Radio.
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This code/file can be found on GitHub : https://github.com/ramdor/Thetis
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Copyright (C) 2000-2025 Original authors
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Copyright (C) 2020-2025 Richard Samphire MW0LGE
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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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mw0lge@grange-lane.co.uk
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This code is based on code and ideas from : https://github.com/vu3rdd/wdsp
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and and uses RNNoise and libspecbleach
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https://gitlab.xiph.org/xiph/rnnoise
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https://github.com/lucianodato/libspecbleach
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*/
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//
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//============================================================================================//
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// Dual-Licensing Statement (Applies Only to Author's Contributions, Richard Samphire MW0LGE) //
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// ------------------------------------------------------------------------------------------ //
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// For any code originally written by Richard Samphire MW0LGE, or for any modifications //
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// made by him, the copyright holder for those portions (Richard Samphire) reserves the //
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// right to use, license, and distribute such code under different terms, including //
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// closed-source and proprietary licences, in addition to the GNU General Public License //
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// granted above. Nothing in this statement restricts any rights granted to recipients under //
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// the GNU GPL. Code contributed by others (not Richard Samphire) remains licensed under //
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// its original terms and is not affected by this dual-licensing statement in any way. //
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// Richard Samphire can be reached by email at : mw0lge@grange-lane.co.uk //
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//============================================================================================//
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#ifndef _sbnr_h
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#define _sbnr_h
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#include <specbleach_adenoiser.h>
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typedef struct _sbnr
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{
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int run;
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int position;
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double *in;
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double *out;
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float reduction_amount;
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float smoothing_factor;
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float whitening_factor;
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int noise_scaling_type;
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float noise_rescale;
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float post_filter_threshold;
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SpectralBleachHandle st;
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int buffer_size;
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int rate;
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float* input;
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float* output;
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} sbnr, *SBNR;
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// define the public api of this module
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extern SBNR create_sbnr(int run, int position, int size, double *in, double *out, int rate);
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extern void destroy_sbnr(SBNR a);
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extern void setSize_sbnr(SBNR a, int size);
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extern void setBuffers_sbnr(SBNR a, double *in, double *out);
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extern void xsbnr(SBNR a, int pos);
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extern void setSamplerate_sbnr(SBNR a, int rate);
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#endif // _sbnr_h
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