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signal-tester.c
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signal-tester.c
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/************************************************************************
FAUST Architecture File
Copyright (C) 2021 GRAME, Centre National de Creation Musicale
---------------------------------------------------------------------
This Architecture section 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 3 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, see <http://www.gnu.org/licenses/>.
EXCEPTION : As a special exception, you may create a larger work
that contains this FAUST architecture section and distribute
that work under terms of your choice, so long as this FAUST
architecture section is not modified.
************************************************************************/
#include <stdio.h>
#include <limits.h>
#include <string.h>
#include <assert.h>
#include "faust/dsp/libfaust-box-c.h"
#include "faust/dsp/libfaust-signal-c.h"
#include "faust/dsp/llvm-dsp-c.h"
#include "faust/gui/PrintCUI.h"
#define BUFFER_SIZE 64
#define SAMPLE_RATE 44100
/**
* Return the current runtime sample rate.
*
* Reproduce the 'SR' definition in platform.lib: SR = min(192000.0, max(1.0, fconstant(int fSamplingFreq, <math.h>)));
*
* @return the current runtime sample rate.
*/
inline Signal SR()
{
return CsigMin(CsigReal(192000.0), CsigMax(CsigReal(1.0), CsigFConst(kSInt, "fSamplingFreq", "<math.h>")));
}
/**
* Return the current runtime buffer size.
*
* Reproduce the 'BS' definition in platform.lib: BS = fvariable(int count, <math.h>);
*
* @return the current runtime buffer size.
*/
inline Signal BS()
{
return CsigFVar(kSInt, "count", "<math.h>");
}
static void render(llvm_dsp* dsp)
{
printf("=================render=================\n");
printf("getNumInputs : %d\n", getNumInputsCDSPInstance(dsp));
printf("getNumOutputs : %d\n", getNumOutputsCDSPInstance(dsp));
// Init with audio driver SR
instanceInitCDSPInstance(dsp, SAMPLE_RATE);
// Compute one buffer
FAUSTFLOAT* inputs[getNumInputsCDSPInstance(dsp)];
FAUSTFLOAT* outputs[getNumOutputsCDSPInstance(dsp)];
for (int chan = 0; chan < getNumInputsCDSPInstance(dsp); ++chan) {
inputs[chan] = ( FAUSTFLOAT*)malloc(sizeof(FAUSTFLOAT) * BUFFER_SIZE);
}
for (int chan = 0; chan < getNumOutputsCDSPInstance(dsp); ++chan) {
outputs[chan] = ( FAUSTFLOAT*)malloc(sizeof(FAUSTFLOAT) * BUFFER_SIZE);
}
computeCDSPInstance(dsp, BUFFER_SIZE, inputs, outputs);
// Print output buffers
for (int frame = 0; frame < BUFFER_SIZE; ++frame) {
for (int chan = 0; chan < getNumOutputsCDSPInstance(dsp); ++chan) {
printf("Audio output chan: %d sample: %f\n", chan, outputs[chan][frame]);
}
}
for (int chan = 0; chan < getNumInputsCDSPInstance(dsp); ++chan) {
free(inputs[chan]);
}
for (int chan = 0; chan < getNumOutputsCDSPInstance(dsp); ++chan) {
free(outputs[chan]);
}
}
/*
import("stdfaust.lib");
process = phasor(440)
with {
decimalpart(x) = x-int(x);
phasor(f) = f/ma.SR : (+ : decimalpart) ~ _;
};
*/
static Signal decimalpart(Signal x)
{
return CsigSub(x, CsigIntCast(x));
}
static Signal phasor(Signal f)
{
return CsigRecursion(decimalpart(CsigAdd(CsigSelf(), CsigDiv(f, SR()))));
}
static void test1()
{
char error_msg[4096];
llvm_dsp_factory* factory = NULL;
createLibContext();
{
Signal signals[2];
signals[0] = phasor(CsigReal(2000));
signals[1] = NULL; // Null terminated array
printf("%s\n", CprintSignal(signals[0], false, INT_MAX));
printf("%s\n", CprintSignal(signals[0], true, INT_MAX));
factory = createCDSPFactoryFromSignals("test1", signals, 0, NULL, "", error_msg, -1);
}
destroyLibContext();
// The factory can be used outside of the createLibContext/destroyLibContext scope
if (factory) {
llvm_dsp* dsp = createCDSPInstance(factory);
assert(dsp);
// Render audio
render(dsp);
// Cleanup
deleteCDSPInstance(dsp);
deleteCDSPFactory(factory);
} else {
printf("Cannot create factory : %s\n", error_msg);
}
}
/*
import("stdfaust.lib");
process = osc(440), osc(440)
with {
decimalpart(x) = x-int(x);
phasor(f) = f/ma.SR : (+ : decimalpart) ~ _;
osc(f) = sin(2 * ma.PI * phasor(f));
};
*/
static Signal osc(Signal f)
{
return CsigSin(CsigMul(phasor(f), CsigMul(CsigReal(2.0), CsigReal(3.141592653))));
}
static void test2()
{
char error_msg[4096];
llvm_dsp_factory* factory = NULL;
createLibContext();
{
Signal signals[3];
signals[0] = osc(CsigReal(440.0));
signals[1] = osc(CsigReal(440.0));
signals[2] = NULL; // Null terminated array
factory = createCDSPFactoryFromSignals("test2", signals, 0, NULL, "", error_msg, -1);
}
destroyLibContext();
// The factory can be used outside of the createLibContext/destroyLibContext scope
if (factory) {
llvm_dsp* dsp = createCDSPInstance(factory);
assert(dsp);
// Render audio
render(dsp);
// Cleanup
deleteCDSPInstance(dsp);
deleteCDSPFactory(factory);
} else {
printf("Cannot create factory : %s\n", error_msg);
}
}
/*
import("stdfaust.lib");
freq = vslider("h:Oscillator/freq", 440, 50, 1000, 0.1);
gain = vslider("h:Oscillator/gain", 0, 0, 1, 0.01);
process = freq * gain;
*/
static void test3()
{
char error_msg[4096];
llvm_dsp_factory* factory = NULL;
createLibContext();
{
Signal signals[2];
Signal freq = CsigVSlider("h:Oscillator/freq", CsigReal(440), CsigReal(50), CsigReal(1000), CsigReal(0.1));
Signal gain = CsigVSlider("h:Oscillator/gain", CsigReal(0), CsigReal(0), CsigReal(1), CsigReal(0.011));
signals[0] = CsigMul(freq, CsigMul(gain, CsigInput(0)));
signals[1] = NULL; // Null terminated array
factory = createCDSPFactoryFromSignals("test3", signals, 0, NULL, "", error_msg, -1);
}
destroyLibContext();
// The factory can be used outside of the createLibContext/destroyLibContext scope
if (factory) {
llvm_dsp* dsp = createCDSPInstance(factory);
assert(dsp);
printf("=================UI=================\n");
// Defined in PrintCUI.h
metadataCDSPInstance(dsp, &mglue);
buildUserInterfaceCDSPInstance(dsp, &uglue);
// Cleanup
deleteCDSPInstance(dsp);
deleteCDSPFactory(factory);
} else {
printf("Cannot create factory : %s\n", error_msg);
}
}
// Compile a complete DSP program to a box expression, then to a source string
// in several target languages
static void test4()
{
printf("test4\n");
const char* lang[] = { "c", "cpp", "cmajor", "codebox", "csharp", "dlang", "fir", "interp", "jax", "jsfx", "julia", "rust", "wast" };
// Context has to be created/destroyed each time
for (int i = 0; i < 13; i++) {
createLibContext();
{
int inputs = 0;
int outputs = 0;
char error_msg[4096];
// Create the oscillator
Box osc = CDSPToBoxes("FaustDSP", "import(\"stdfaust.lib\"); process = os.osc(440);", 0, NULL, &inputs, &outputs, error_msg);
if (!osc) {
printf("%s", error_msg);
destroyLibContext();
return;
}
// Compile it to the target language
char* source = CcreateSourceFromBoxes("FaustDSP", osc, lang[i], 0, NULL, error_msg);
if (source) {
printf("%s\n", source);
freeCMemory(source);
} else {
printf("%s\n", error_msg);
}
}
destroyLibContext();
}
}
// Compile a complete DSP program to a box expression, then a list of signals, then to a source string
// in several target languages
static void test5()
{
printf("test5\n");
const char* lang[] = { "c", "cpp", "cmajor", "codebox", "csharp", "dlang", "fir", "interp", "jax", "jsfx", "julia", "rust", "wast" };
// Context has to be created/destroyed each time
for (int i = 0; i < 13; i++) {
createLibContext();
{
int inputs = 0;
int outputs = 0;
char error_msg[4096];
// Create the oscillator
Box osc = CDSPToBoxes("FaustDSP", "import(\"stdfaust.lib\"); process = os.osc(440);", 0, NULL, &inputs, &outputs, error_msg);
if (!osc) {
printf("%s", error_msg);
destroyLibContext();
return;
}
// Compile to signals
Signal* signals = CboxesToSignals(osc, error_msg);
if (!signals) {
printf("%s", error_msg);
destroyLibContext();
return;
}
// Compile signals to the target language
char* source = CcreateSourceFromSignals("FaustDSP", signals, lang[i], 0, NULL, error_msg);
if (source) {
printf("%s\n", source);
freeCMemory(source);
} else {
printf("%s\n", error_msg);
}
}
destroyLibContext();
}
}
int main(int argc, char* argv[])
{
test1();
test2();
test3();
test4();
test5();
return 0;
}