391 lines
11 KiB
C
391 lines
11 KiB
C
/* ------------------------------------------------------------
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author: "Christopher Arndt"
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copyright: "Christopher Arndt, 2024"
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license: "MIT"
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name: "FaustLPF"
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version: "0.1.0"
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Code generated with Faust 2.74.6 (https://faust.grame.fr)
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Compilation options: -a ./examples/minarch.h -lang c -rui -ct 1 -fm def -cn faustlpf -es 1 -mcd 16 -mdd 1024 -mdy 33 -single -ftz 0 -vec -lv 0 -vs 32
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------------------------------------------------------------ */
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#ifndef __faustlpf_H__
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#define __faustlpf_H__
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/******************* BEGIN minarch.h ****************/
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/************************************************************************
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FAUST Architecture File for generating a very minimal C interface
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************************************************************************/
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#include "faust/gui/CInterface.h"
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/******************************************************************************
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VECTOR INTRINSICS
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*******************************************************************************/
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/**************************BEGIN USER SECTION **************************/
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#ifndef FAUSTFLOAT
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#define FAUSTFLOAT float
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(_WIN32)
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#define RESTRICT __restrict
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#else
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#define RESTRICT __restrict__
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#endif
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#include "faust/dsp/fastmath.cpp"
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#include <math.h>
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#include <stdint.h>
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#include <stdlib.h>
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static float faustlpf_faustpower2_f(float value) {
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return value * value;
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}
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#ifndef FAUSTCLASS
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#define FAUSTCLASS faustlpf
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#endif
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#ifdef __APPLE__
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#define exp10f __exp10f
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#define exp10 __exp10
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#endif
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typedef struct {
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int fSampleRate;
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float fConst0;
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float fConst1;
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float fConst2;
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FAUSTFLOAT fHslider0;
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float fRec1_perm[4];
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float fConst3;
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float fRec0_perm[4];
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} faustlpf;
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faustlpf* newfaustlpf() {
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faustlpf* dsp = (faustlpf*)calloc(1, sizeof(faustlpf));
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return dsp;
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}
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void deletefaustlpf(faustlpf* dsp) {
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free(dsp);
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}
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void metadatafaustlpf(MetaGlue* m) {
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m->declare(m->metaInterface, "author", "Christopher Arndt");
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m->declare(m->metaInterface, "compile_options", "-a ./examples/minarch.h -lang c -rui -ct 1 -fm def -cn faustlpf -es 1 -mcd 16 -mdd 1024 -mdy 33 -single -ftz 0 -vec -lv 0 -vs 32");
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m->declare(m->metaInterface, "copyright", "Christopher Arndt, 2024");
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m->declare(m->metaInterface, "filename", "lpf.dsp");
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m->declare(m->metaInterface, "filters.lib/fir:author", "Julius O. Smith III");
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m->declare(m->metaInterface, "filters.lib/fir:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
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m->declare(m->metaInterface, "filters.lib/fir:license", "MIT-style STK-4.3 license");
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m->declare(m->metaInterface, "filters.lib/iir:author", "Julius O. Smith III");
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m->declare(m->metaInterface, "filters.lib/iir:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
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m->declare(m->metaInterface, "filters.lib/iir:license", "MIT-style STK-4.3 license");
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m->declare(m->metaInterface, "filters.lib/lowpass0_highpass1", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
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m->declare(m->metaInterface, "filters.lib/lowpass0_highpass1:author", "Julius O. Smith III");
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m->declare(m->metaInterface, "filters.lib/lowpass:author", "Julius O. Smith III");
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m->declare(m->metaInterface, "filters.lib/lowpass:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
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m->declare(m->metaInterface, "filters.lib/lowpass:license", "MIT-style STK-4.3 license");
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m->declare(m->metaInterface, "filters.lib/name", "Faust Filters Library");
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m->declare(m->metaInterface, "filters.lib/tf2:author", "Julius O. Smith III");
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m->declare(m->metaInterface, "filters.lib/tf2:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
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m->declare(m->metaInterface, "filters.lib/tf2:license", "MIT-style STK-4.3 license");
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m->declare(m->metaInterface, "filters.lib/tf2s:author", "Julius O. Smith III");
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m->declare(m->metaInterface, "filters.lib/tf2s:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
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m->declare(m->metaInterface, "filters.lib/tf2s:license", "MIT-style STK-4.3 license");
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m->declare(m->metaInterface, "filters.lib/version", "1.3.0");
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m->declare(m->metaInterface, "license", "MIT");
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m->declare(m->metaInterface, "maths.lib/author", "GRAME");
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m->declare(m->metaInterface, "maths.lib/copyright", "GRAME");
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m->declare(m->metaInterface, "maths.lib/license", "LGPL with exception");
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m->declare(m->metaInterface, "maths.lib/name", "Faust Math Library");
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m->declare(m->metaInterface, "maths.lib/version", "2.8.0");
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m->declare(m->metaInterface, "name", "FaustLPF");
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m->declare(m->metaInterface, "platform.lib/name", "Generic Platform Library");
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m->declare(m->metaInterface, "platform.lib/version", "1.3.0");
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m->declare(m->metaInterface, "signals.lib/name", "Faust Signal Routing Library");
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m->declare(m->metaInterface, "signals.lib/version", "1.5.0");
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m->declare(m->metaInterface, "version", "0.1.0");
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}
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int getSampleRatefaustlpf(faustlpf* RESTRICT dsp) {
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return dsp->fSampleRate;
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}
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int getNumInputsfaustlpf(faustlpf* RESTRICT dsp) {
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return 1;
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}
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int getNumOutputsfaustlpf(faustlpf* RESTRICT dsp) {
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return 1;
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}
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void classInitfaustlpf(int sample_rate) {
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}
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void instanceResetUserInterfacefaustlpf(faustlpf* dsp) {
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dsp->fHslider0 = (FAUSTFLOAT)(1.5e+04f);
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}
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void instanceClearfaustlpf(faustlpf* dsp) {
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/* C99 loop */
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{
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int l0;
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for (l0 = 0; l0 < 4; l0 = l0 + 1) {
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dsp->fRec1_perm[l0] = 0.0f;
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}
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}
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/* C99 loop */
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{
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int l1;
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for (l1 = 0; l1 < 4; l1 = l1 + 1) {
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dsp->fRec0_perm[l1] = 0.0f;
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}
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}
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}
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void instanceConstantsfaustlpf(faustlpf* dsp, int sample_rate) {
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dsp->fSampleRate = sample_rate;
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dsp->fConst0 = fminf(1.92e+05f, fmaxf(1.0f, (float)(dsp->fSampleRate)));
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dsp->fConst1 = 44.1f / dsp->fConst0;
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dsp->fConst2 = 1.0f - dsp->fConst1;
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dsp->fConst3 = 3.1415927f / dsp->fConst0;
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}
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void instanceInitfaustlpf(faustlpf* dsp, int sample_rate) {
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instanceConstantsfaustlpf(dsp, sample_rate);
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instanceResetUserInterfacefaustlpf(dsp);
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instanceClearfaustlpf(dsp);
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}
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void initfaustlpf(faustlpf* dsp, int sample_rate) {
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classInitfaustlpf(sample_rate);
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instanceInitfaustlpf(dsp, sample_rate);
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}
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void buildUserInterfacefaustlpf(faustlpf* dsp, UIGlue* ui_interface) {
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ui_interface->openVerticalBox(ui_interface->uiInterface, "FaustLPF");
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ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "1", "");
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ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "scale", "log");
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ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "style", "knob");
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ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "symbol", "cutoff");
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ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "tooltip", "Low-pass filter cutoff frequency");
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ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "unit", "Hz");
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ui_interface->addHorizontalSlider(ui_interface->uiInterface, "Cutoff", &dsp->fHslider0, (FAUSTFLOAT)1.5e+04f, (FAUSTFLOAT)16.0f, (FAUSTFLOAT)1.5e+04f, (FAUSTFLOAT)0.1f);
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ui_interface->closeBox(ui_interface->uiInterface);
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}
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void computefaustlpf(faustlpf* dsp, int count, FAUSTFLOAT** RESTRICT inputs, FAUSTFLOAT** RESTRICT outputs) {
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FAUSTFLOAT* input0_ptr = inputs[0];
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FAUSTFLOAT* output0_ptr = outputs[0];
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float fSlow0 = dsp->fConst1 * fmaxf(16.0f, fminf(1.5e+04f, (float)(dsp->fHslider0)));
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float fRec1_tmp[36];
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float* fRec1 = &fRec1_tmp[4];
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float fZec0[32];
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float fZec1[32];
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float fZec2[32];
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float fRec0_tmp[36];
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float* fRec0 = &fRec0_tmp[4];
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int vindex = 0;
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/* Main loop */
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for (vindex = 0; vindex <= (count - 32); vindex = vindex + 32) {
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FAUSTFLOAT* input0 = &input0_ptr[vindex];
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FAUSTFLOAT* output0 = &output0_ptr[vindex];
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int vsize = 32;
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/* Recursive loop 0 */
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/* Pre code */
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/* C99 loop */
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{
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int j0;
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for (j0 = 0; j0 < 4; j0 = j0 + 1) {
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fRec1_tmp[j0] = dsp->fRec1_perm[j0];
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}
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}
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fRec1[i] = fSlow0 + dsp->fConst2 * fRec1[i - 1];
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}
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}
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/* Post code */
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/* C99 loop */
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{
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int j1;
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for (j1 = 0; j1 < 4; j1 = j1 + 1) {
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dsp->fRec1_perm[j1] = fRec1_tmp[vsize + j1];
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}
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}
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/* Vectorizable loop 1 */
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fZec0[i] = fast_tanf(dsp->fConst3 * fRec1[i]);
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}
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}
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/* Vectorizable loop 2 */
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fZec1[i] = 1.0f / fZec0[i];
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}
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}
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/* Vectorizable loop 3 */
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fZec2[i] = (fZec1[i] + 1.4142135f) / fZec0[i] + 1.0f;
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}
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}
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/* Recursive loop 4 */
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/* Pre code */
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/* C99 loop */
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{
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int j2;
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for (j2 = 0; j2 < 4; j2 = j2 + 1) {
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fRec0_tmp[j2] = dsp->fRec0_perm[j2];
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}
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}
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fRec0[i] = (float)(input0[i]) - (fRec0[i - 2] * ((fZec1[i] + -1.4142135f) / fZec0[i] + 1.0f) + 2.0f * fRec0[i - 1] * (1.0f - 1.0f / faustlpf_faustpower2_f(fZec0[i]))) / fZec2[i];
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}
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}
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/* Post code */
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/* C99 loop */
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{
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int j3;
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for (j3 = 0; j3 < 4; j3 = j3 + 1) {
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dsp->fRec0_perm[j3] = fRec0_tmp[vsize + j3];
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}
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}
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/* Vectorizable loop 5 */
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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output0[i] = (FAUSTFLOAT)((fRec0[i - 2] + fRec0[i] + 2.0f * fRec0[i - 1]) / fZec2[i]);
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}
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}
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}
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/* Remaining frames */
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if (vindex < count) {
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FAUSTFLOAT* input0 = &input0_ptr[vindex];
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FAUSTFLOAT* output0 = &output0_ptr[vindex];
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int vsize = count - vindex;
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/* Recursive loop 0 */
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/* Pre code */
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/* C99 loop */
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{
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int j0;
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for (j0 = 0; j0 < 4; j0 = j0 + 1) {
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fRec1_tmp[j0] = dsp->fRec1_perm[j0];
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}
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}
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fRec1[i] = fSlow0 + dsp->fConst2 * fRec1[i - 1];
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}
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}
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/* Post code */
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/* C99 loop */
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{
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int j1;
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for (j1 = 0; j1 < 4; j1 = j1 + 1) {
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dsp->fRec1_perm[j1] = fRec1_tmp[vsize + j1];
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}
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}
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/* Vectorizable loop 1 */
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fZec0[i] = fast_tanf(dsp->fConst3 * fRec1[i]);
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}
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}
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/* Vectorizable loop 2 */
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fZec1[i] = 1.0f / fZec0[i];
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}
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}
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/* Vectorizable loop 3 */
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fZec2[i] = (fZec1[i] + 1.4142135f) / fZec0[i] + 1.0f;
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}
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}
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/* Recursive loop 4 */
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/* Pre code */
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/* C99 loop */
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{
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int j2;
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for (j2 = 0; j2 < 4; j2 = j2 + 1) {
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fRec0_tmp[j2] = dsp->fRec0_perm[j2];
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}
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}
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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fRec0[i] = (float)(input0[i]) - (fRec0[i - 2] * ((fZec1[i] + -1.4142135f) / fZec0[i] + 1.0f) + 2.0f * fRec0[i - 1] * (1.0f - 1.0f / faustlpf_faustpower2_f(fZec0[i]))) / fZec2[i];
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}
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}
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/* Post code */
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/* C99 loop */
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{
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int j3;
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for (j3 = 0; j3 < 4; j3 = j3 + 1) {
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dsp->fRec0_perm[j3] = fRec0_tmp[vsize + j3];
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}
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}
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/* Vectorizable loop 5 */
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/* Compute code */
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/* C99 loop */
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{
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int i;
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for (i = 0; i < vsize; i = i + 1) {
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output0[i] = (FAUSTFLOAT)((fRec0[i - 2] + fRec0[i] + 2.0f * fRec0[i - 1]) / fZec2[i]);
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}
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}
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}
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}
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#ifdef __cplusplus
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}
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#endif
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/***************************END USER SECTION ***************************/
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#endif
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