Error message with FAUST in HISE

toxonic

@Christoph-Hart mhhh... "/usr/local" contains the folders "include", "lib" and "share", so i guess, it should be the correct path to Faust, since it's the common installation folder for Faust on Linux systems, afaik. For example the "maths.lib" file is in "/usr/local/share/faust". Can you confirm, that it's the correct path for the HISE preferences?
I have installed the most current version of faust, including the LLVM backend, which i also enabled for HISE.

One more question: Are the following settings for the HISE-Standalone .jucer file correct ?

toxonic

Maybe @sletz or @etXzat have an idea?

sletz

Can you compile the same code as a separated file in a terminal?

toxonic

@sletz you mean in Faust? I already compiled it in Faust works, no problem there...

sletz

@toxonic Not in Faust Web IDE, but in a terminal on your machine:

you create a foo.dsp file with the code
then "faust foo.dsp" in a terminal, does this works?

toxonic

@sletz i'll try, when i'm back home. But i'm pretty sure it works, since i didnt't mean the Faust online compiler, but the Faust works IDE on my machine, which compiles via the local Faust compiler.

sletz

@toxonic The web Faust IDE embed its own webassembly version of the compiler and all DSP libraries. So running in a terminal is a different story.

Christoph Hart

The example works on my Macbook too so I'm pretty sure it's something with your faust installation.

What happens if you install faust to a completely different location and then set the FaustPath to this directory?

toxonic

@sletz I usually use the Faust Works IDE, so I have no experience in using Faust via terminal.
I tried to compile the code to alsa-gtk app, and there is no problem:

If i should use the terminal, could you please tell me, what to type in?
@Christoph-Hart I am not firm in installing software to other locations but the default ones. What have i got to do? "sudo make install /home/XYZ/faust"?

sletz

@toxonic You create a foo.dsp text file, you paste the DSP code. Then type "faust foo.dsp" in a terminal.

toxonic

@sletz It seems to compile properly to cpp code. This is the output:

toxonic@toxonic-studio:~/Schreibtisch$ faust gain.dsp
/* ------------------------------------------------------------
name: "gain"
Code generated with Faust 2.50.6 (https://faust.grame.fr)
Compilation options: -lang cpp -es 1 -mcd 16 -single -ftz 0
------------------------------------------------------------ */

#ifndef  __mydsp_H__
#define  __mydsp_H__

#ifndef FAUSTFLOAT
#define FAUSTFLOAT float
#endif 

#include <algorithm>
#include <cmath>
#include <cstdint>
#include <math.h>

#ifndef FAUSTCLASS 
#define FAUSTCLASS mydsp
#endif

#ifdef __APPLE__ 
#define exp10f __exp10f
#define exp10 __exp10
#endif

#if defined(_WIN32)
#define RESTRICT __restrict
#else
#define RESTRICT __restrict__
#endif


class mydsp : public dsp {
	
 private:
	
	int fSampleRate;
	float fConst0;
	float fConst1;
	FAUSTFLOAT fVslider0;
	float fRec0[2];
	
 public:
	
	void metadata(Meta* m) { 
		m->declare("compile_options", "-lang cpp -es 1 -mcd 16 -single -ftz 0");
		m->declare("filename", "gain.dsp");
		m->declare("maths.lib/author", "GRAME");
		m->declare("maths.lib/copyright", "GRAME");
		m->declare("maths.lib/license", "LGPL with exception");
		m->declare("maths.lib/name", "Faust Math Library");
		m->declare("maths.lib/version", "2.5");
		m->declare("name", "gain");
		m->declare("platform.lib/name", "Generic Platform Library");
		m->declare("platform.lib/version", "0.2");
		m->declare("signals.lib/name", "Faust Signal Routing Library");
		m->declare("signals.lib/version", "0.3");
	}

	virtual int getNumInputs() {
		return 2;
	}
	virtual int getNumOutputs() {
		return 2;
	}
	
	static void classInit(int sample_rate) {
	}
	
	virtual void instanceConstants(int sample_rate) {
		fSampleRate = sample_rate;
		fConst0 = 44.1f / std::min<float>(1.92e+05f, std::max<float>(1.0f, float(fSampleRate)));
		fConst1 = 1.0f - fConst0;
	}
	
	virtual void instanceResetUserInterface() {
		fVslider0 = FAUSTFLOAT(0.0f);
	}
	
	virtual void instanceClear() {
		for (int l0 = 0; l0 < 2; l0 = l0 + 1) {
			fRec0[l0] = 0.0f;
		}
	}
	
	virtual void init(int sample_rate) {
		classInit(sample_rate);
		instanceInit(sample_rate);
	}
	virtual void instanceInit(int sample_rate) {
		instanceConstants(sample_rate);
		instanceResetUserInterface();
		instanceClear();
	}
	
	virtual mydsp* clone() {
		return new mydsp();
	}
	
	virtual int getSampleRate() {
		return fSampleRate;
	}
	
	virtual void buildUserInterface(UI* ui_interface) {
		ui_interface->openVerticalBox("gain");
		ui_interface->addVerticalSlider("gain", &fVslider0, FAUSTFLOAT(0.0f), FAUSTFLOAT(0.0f), FAUSTFLOAT(1.0f), FAUSTFLOAT(0.01f));
		ui_interface->closeBox();
	}
	
	virtual void compute(int count, FAUSTFLOAT** RESTRICT inputs, FAUSTFLOAT** RESTRICT outputs) {
		FAUSTFLOAT* input0 = inputs[0];
		FAUSTFLOAT* input1 = inputs[1];
		FAUSTFLOAT* output0 = outputs[0];
		FAUSTFLOAT* output1 = outputs[1];
		float fSlow0 = fConst0 * float(fVslider0);
		for (int i0 = 0; i0 < count; i0 = i0 + 1) {
			fRec0[0] = fSlow0 + fConst1 * fRec0[1];
			output0[i0] = FAUSTFLOAT(float(input0[i0]) * fRec0[0]);
			output1[i0] = FAUSTFLOAT(float(input1[i0]) * fRec0[0]);
			fRec0[1] = fRec0[0];
		}
	}

};

#endif

toxonic

@Christoph-Hart Okay, i managed it to install Faust to a folder in my home directory and indeed: After pointing Hise to this directory the code works fine! :-)
On one hand that's good news and i'm lucky, that it's running. On the other hand, it is a bit annoying, that i can't install to the default directory and i don't know why.

bendurso

@toxonic I have the same error "expecting LPAR or DEF" in an effect made with Faust. The problem is only on Linux. I tried installing Faust again in a folder in my user directory, then changed the path of Faust on Hise, but it still gives me the error.

Any ideas?

Error message with FAUST in HISE

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