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nymph/examples/faustlpf.c

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//------------------------------------------------------------------------------
// This file was generated using the Faust compiler (https://faust.grame.fr),
// and the Faust post-processor (https://github.com/SpotlightKid/faustdoctor).
//
// Source: faustlpf.dsp
// Name: FaustLPF
// Author: Christopher Arndt
// Copyright: Christopher Arndt, 2024
// License: MIT
// Version: 0.1.0
// FAUST version: 2.76.0
// FAUST compilation options: -a /home/chris/tmp/tmpnf8hapuk.c -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
//------------------------------------------------------------------------------
#include "faustlpf.h"
//------------------------------------------------------------------------------
// Begin the Faust code section
#if defined(__GNUC__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
// START INTRINSICS
// END INTRINSICS
// START CLASS CODE
#ifndef FAUSTFLOAT
#define FAUSTFLOAT float
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if defined(_WIN32)
#define RESTRICT __restrict
#else
#define RESTRICT __restrict__
#endif
#include "faust/dsp/fastmath.cpp"
#include <math.h>
#include <stdint.h>
#include <stdlib.h>
static float faustlpf_faustpower2_f(float value) {
return value * value;
}
#ifndef FAUSTCLASS
#define FAUSTCLASS faustlpf
#endif
#ifdef __APPLE__
#define exp10f __exp10f
#define exp10 __exp10
#endif
faustlpf* newfaustlpf() {
faustlpf* dsp = (faustlpf*)calloc(1, sizeof(faustlpf));
return dsp;
}
void deletefaustlpf(faustlpf* dsp) {
free(dsp);
}
void metadatafaustlpf(MetaGlue* m) {
m->declare(m->metaInterface, "author", "Christopher Arndt");
m->declare(m->metaInterface, "compile_options", "-a /home/chris/tmp/tmpnf8hapuk.c -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");
m->declare(m->metaInterface, "copyright", "Christopher Arndt, 2024");
m->declare(m->metaInterface, "filename", "faustlpf.dsp");
m->declare(m->metaInterface, "filters.lib/fir:author", "Julius O. Smith III");
m->declare(m->metaInterface, "filters.lib/fir:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
m->declare(m->metaInterface, "filters.lib/fir:license", "MIT-style STK-4.3 license");
m->declare(m->metaInterface, "filters.lib/iir:author", "Julius O. Smith III");
m->declare(m->metaInterface, "filters.lib/iir:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
m->declare(m->metaInterface, "filters.lib/iir:license", "MIT-style STK-4.3 license");
m->declare(m->metaInterface, "filters.lib/lowpass0_highpass1", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
m->declare(m->metaInterface, "filters.lib/lowpass0_highpass1:author", "Julius O. Smith III");
m->declare(m->metaInterface, "filters.lib/lowpass:author", "Julius O. Smith III");
m->declare(m->metaInterface, "filters.lib/lowpass:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
m->declare(m->metaInterface, "filters.lib/lowpass:license", "MIT-style STK-4.3 license");
m->declare(m->metaInterface, "filters.lib/name", "Faust Filters Library");
m->declare(m->metaInterface, "filters.lib/tf2:author", "Julius O. Smith III");
m->declare(m->metaInterface, "filters.lib/tf2:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
m->declare(m->metaInterface, "filters.lib/tf2:license", "MIT-style STK-4.3 license");
m->declare(m->metaInterface, "filters.lib/tf2s:author", "Julius O. Smith III");
m->declare(m->metaInterface, "filters.lib/tf2s:copyright", "Copyright (C) 2003-2019 by Julius O. Smith III <jos@ccrma.stanford.edu>");
m->declare(m->metaInterface, "filters.lib/tf2s:license", "MIT-style STK-4.3 license");
m->declare(m->metaInterface, "filters.lib/version", "1.3.0");
m->declare(m->metaInterface, "license", "MIT");
m->declare(m->metaInterface, "maths.lib/author", "GRAME");
m->declare(m->metaInterface, "maths.lib/copyright", "GRAME");
m->declare(m->metaInterface, "maths.lib/license", "LGPL with exception");
m->declare(m->metaInterface, "maths.lib/name", "Faust Math Library");
m->declare(m->metaInterface, "maths.lib/version", "2.8.0");
m->declare(m->metaInterface, "name", "FaustLPF");
m->declare(m->metaInterface, "platform.lib/name", "Generic Platform Library");
m->declare(m->metaInterface, "platform.lib/version", "1.3.0");
m->declare(m->metaInterface, "signals.lib/name", "Faust Signal Routing Library");
m->declare(m->metaInterface, "signals.lib/version", "1.6.0");
m->declare(m->metaInterface, "version", "0.1.0");
}
int getSampleRatefaustlpf(faustlpf* RESTRICT dsp) {
return dsp->fSampleRate;
}
int getNumInputsfaustlpf(faustlpf* RESTRICT dsp) {
return 1;
}
int getNumOutputsfaustlpf(faustlpf* RESTRICT dsp) {
return 1;
}
void classInitfaustlpf(int sample_rate) {
}
void instanceResetUserInterfacefaustlpf(faustlpf* dsp) {
dsp->fHslider0 = (FAUSTFLOAT)(1.5e+04f);
}
void instanceClearfaustlpf(faustlpf* dsp) {
/* C99 loop */
{
int l0;
for (l0 = 0; l0 < 4; l0 = l0 + 1) {
dsp->fRec1_perm[l0] = 0.0f;
}
}
/* C99 loop */
{
int l1;
for (l1 = 0; l1 < 4; l1 = l1 + 1) {
dsp->fRec0_perm[l1] = 0.0f;
}
}
}
void instanceConstantsfaustlpf(faustlpf* dsp, int sample_rate) {
dsp->fSampleRate = sample_rate;
dsp->fConst0 = fminf(1.92e+05f, fmaxf(1.0f, (float)(dsp->fSampleRate)));
dsp->fConst1 = 44.1f / dsp->fConst0;
dsp->fConst2 = 1.0f - dsp->fConst1;
dsp->fConst3 = 3.1415927f / dsp->fConst0;
}
void instanceInitfaustlpf(faustlpf* dsp, int sample_rate) {
instanceConstantsfaustlpf(dsp, sample_rate);
instanceResetUserInterfacefaustlpf(dsp);
instanceClearfaustlpf(dsp);
}
void initfaustlpf(faustlpf* dsp, int sample_rate) {
classInitfaustlpf(sample_rate);
instanceInitfaustlpf(dsp, sample_rate);
}
void buildUserInterfacefaustlpf(faustlpf* dsp, UIGlue* ui_interface) {
ui_interface->openVerticalBox(ui_interface->uiInterface, "FaustLPF");
ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "1", "");
ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "scale", "log");
ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "style", "knob");
ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "symbol", "cutoff");
ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "tooltip", "Low-pass filter cutoff frequency");
ui_interface->declare(ui_interface->uiInterface, &dsp->fHslider0, "unit", "Hz");
ui_interface->addHorizontalSlider(ui_interface->uiInterface, "Cutoff", &dsp->fHslider0, (FAUSTFLOAT)1.5e+04f, (FAUSTFLOAT)16.0f, (FAUSTFLOAT)1.5e+04f, (FAUSTFLOAT)0.1f);
ui_interface->closeBox(ui_interface->uiInterface);
}
void computefaustlpf(faustlpf* dsp, int count, FAUSTFLOAT** RESTRICT inputs, FAUSTFLOAT** RESTRICT outputs) {
FAUSTFLOAT* input0_ptr = inputs[0];
FAUSTFLOAT* output0_ptr = outputs[0];
float fSlow0 = dsp->fConst1 * fmaxf(16.0f, fminf(1.5e+04f, (float)(dsp->fHslider0)));
float fRec1_tmp[36];
float* fRec1 = &fRec1_tmp[4];
float fZec0[32];
float fZec1[32];
float fZec2[32];
float fRec0_tmp[36];
float* fRec0 = &fRec0_tmp[4];
int vindex = 0;
/* Main loop */
for (vindex = 0; vindex <= (count - 32); vindex = vindex + 32) {
FAUSTFLOAT* input0 = &input0_ptr[vindex];
FAUSTFLOAT* output0 = &output0_ptr[vindex];
int vsize = 32;
/* Recursive loop 0 */
/* Pre code */
/* C99 loop */
{
int j0;
for (j0 = 0; j0 < 4; j0 = j0 + 1) {
fRec1_tmp[j0] = dsp->fRec1_perm[j0];
}
}
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
fRec1[i] = fSlow0 + dsp->fConst2 * fRec1[i - 1];
}
}
/* Post code */
/* C99 loop */
{
int j1;
for (j1 = 0; j1 < 4; j1 = j1 + 1) {
dsp->fRec1_perm[j1] = fRec1_tmp[vsize + j1];
}
}
/* Vectorizable loop 1 */
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
fZec0[i] = fast_tanf(dsp->fConst3 * fRec1[i]);
}
}
/* Vectorizable loop 2 */
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
fZec1[i] = 1.0f / fZec0[i];
}
}
/* Vectorizable loop 3 */
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
fZec2[i] = (fZec1[i] + 1.4142135f) / fZec0[i] + 1.0f;
}
}
/* Recursive loop 4 */
/* Pre code */
/* C99 loop */
{
int j2;
for (j2 = 0; j2 < 4; j2 = j2 + 1) {
fRec0_tmp[j2] = dsp->fRec0_perm[j2];
}
}
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
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];
}
}
/* Post code */
/* C99 loop */
{
int j3;
for (j3 = 0; j3 < 4; j3 = j3 + 1) {
dsp->fRec0_perm[j3] = fRec0_tmp[vsize + j3];
}
}
/* Vectorizable loop 5 */
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
output0[i] = (FAUSTFLOAT)((fRec0[i - 2] + fRec0[i] + 2.0f * fRec0[i - 1]) / fZec2[i]);
}
}
}
/* Remaining frames */
if (vindex < count) {
FAUSTFLOAT* input0 = &input0_ptr[vindex];
FAUSTFLOAT* output0 = &output0_ptr[vindex];
int vsize = count - vindex;
/* Recursive loop 0 */
/* Pre code */
/* C99 loop */
{
int j0;
for (j0 = 0; j0 < 4; j0 = j0 + 1) {
fRec1_tmp[j0] = dsp->fRec1_perm[j0];
}
}
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
fRec1[i] = fSlow0 + dsp->fConst2 * fRec1[i - 1];
}
}
/* Post code */
/* C99 loop */
{
int j1;
for (j1 = 0; j1 < 4; j1 = j1 + 1) {
dsp->fRec1_perm[j1] = fRec1_tmp[vsize + j1];
}
}
/* Vectorizable loop 1 */
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
fZec0[i] = fast_tanf(dsp->fConst3 * fRec1[i]);
}
}
/* Vectorizable loop 2 */
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
fZec1[i] = 1.0f / fZec0[i];
}
}
/* Vectorizable loop 3 */
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
fZec2[i] = (fZec1[i] + 1.4142135f) / fZec0[i] + 1.0f;
}
}
/* Recursive loop 4 */
/* Pre code */
/* C99 loop */
{
int j2;
for (j2 = 0; j2 < 4; j2 = j2 + 1) {
fRec0_tmp[j2] = dsp->fRec0_perm[j2];
}
}
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
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];
}
}
/* Post code */
/* C99 loop */
{
int j3;
for (j3 = 0; j3 < 4; j3 = j3 + 1) {
dsp->fRec0_perm[j3] = fRec0_tmp[vsize + j3];
}
}
/* Vectorizable loop 5 */
/* Compute code */
/* C99 loop */
{
int i;
for (i = 0; i < vsize; i = i + 1) {
output0[i] = (FAUSTFLOAT)((fRec0[i - 2] + fRec0[i] + 2.0f * fRec0[i - 1]) / fZec2[i]);
}
}
}
}
#ifdef __cplusplus
}
#endif
// END CLASS CODE
#if defined(__GNUC__)
# pragma GCC diagnostic pop
#endif
//------------------------------------------------------------------------------
// End the Faust code section
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