danidev
commented
3 years ago I did some other tests on exporting with faust2teensy and I have some other info to share.
first of all, I did a fresh installation of faust on a Ubuntu 18.04.5 LTS. Cloned the repo and then:
make
sudo make installthen I compiled the .dsp script with:
faust2teensy -lib script.dspI've replaced the .cpp and .h previously exported with the online faust ide and then compiled with the teensyduino. It compiles (not tested yet on the board).
There are some differences on the .cpp files, here is a sample (but there are more):
This is the parseDouble function exported by faust2teensy:
/**
* @brief parseDouble : parse number [s]dddd[.dddd] or [s]d[.dddd][E|e][s][dddd] and store the result in x
* @param p the string to parse, then the remaining string
* @param x the float number found if any
* @return true if a float number was found at the begin of p
*/
static bool parseDouble(const char*& p, double& x)
{
double sign = 1.0; // sign of the number
double ipart = 0; // integral part of the number
double dpart = 0; // decimal part of the number before division
double dcoef = 1.0; // division factor for the decimal part
double expsign = 1.0; // sign of the E|e part
double expcoef = 0.0; // multiplication factor of E|e part
bool valid = false; // true if the number contains at least one digit
skipBlank(p);
const char* saved = p; // to restore position if we fail
// Sign
if (parseChar(p, '+')) {
sign = 1.0;
} else if (parseChar(p, '-')) {
sign = -1.0;
}
// Integral part
while (isdigit(*p)) {
valid = true;
ipart = ipart*10 + (*p - '0');
p++;
}
// Possible decimal part
if (parseChar(p, '.')) {
while (isdigit(*p)) {
valid = true;
dpart = dpart*10 + (*p - '0');
dcoef *= 10.0;
p++;
}
}
// Possible E|e part
if (parseChar(p, 'E') || parseChar(p, 'e')) {
if (parseChar(p, '+')) {
expsign = 1.0;
} else if (parseChar(p, '-')) {
expsign = -1.0;
}
while (isdigit(*p)) {
expcoef = expcoef*10 + (*p - '0');
p++;
}
}
if (valid) {
x = (sign*(ipart + dpart/dcoef)) * std::pow(10.0, expcoef*expsign);
} else {
p = saved;
}
return valid;
}The same function generated by the web exporter:
/**
* @brief parseDouble : parse number [s]dddd[.dddd] and store the result in x
* @param p the string to parse, then the remaining string
* @param x the float number found if any
* @return true if a float number was found at the begin of p
*/
static bool parseDouble(const char*& p, double& x)
{
std::stringstream reader(p);
std::streambuf* pbuf = reader.rdbuf();
// Keep position before parsing
std::streamsize size1 = pbuf->in_avail();
// Parse the number
reader >> x;
// Keep position after parsing
std::streamsize size2 = pbuf->in_avail();
// Move from the actual size
p += (size1 - size2);
// True if the number contains at least one digit
return (size1 > size2);
}Also, if I try to make the script polyphonic with:
faust2teensy -lib -nvoices 4 script.dspseems that the nvoices param is not recognised and if i use:
faust2teensy -lib script.dsp -nvoices 4It exports 2 times on the .h file the dsp class, and I get a lot of errors by the teensyduino, here is the .h file:
#define NVOICES 4
/************************************************************************
FAUST Architecture File
Copyright (C) 2019-2020 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.
************************************************************************/
#ifndef faust_MicrocosmosDsp_h_
#define faust_MicrocosmosDsp_h_
#include <string>
#include "Arduino.h"
#include "AudioStream.h"
#include "Audio.h"
class dsp;
class MapUI;
class MidiUI;
#if MIDICTRL
class teensy_midi;
#endif
class MicrocosmosDsp : public AudioStream
{
public:
MicrocosmosDsp();
~MicrocosmosDsp();
virtual void update(void);
void setParamValue(const std::string& path, float value);
float getParamValue(const std::string& path);
private:
template <int INPUTS, int OUTPUTS>
void updateImp(void);
float** fInChannel;
float** fOutChannel;
MapUI* fUI;
#if MIDICTRL
teensy_midi* fMIDIHandler;
MidiUI* fMIDIInterface;
#endif
dsp* fDSP;
};
#endif
#define NVOICES 4
/************************************************************************
FAUST Architecture File
Copyright (C) 2019-2020 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.
************************************************************************/
#ifndef faust_MicrocosmosDsp_h_
#define faust_MicrocosmosDsp_h_
#include <string>
#include "Arduino.h"
#include "AudioStream.h"
#include "Audio.h"
class dsp;
class MapUI;
class MidiUI;
#if MIDICTRL
class teensy_midi;
#endif
class MicrocosmosDsp : public AudioStream
{
public:
MicrocosmosDsp();
~MicrocosmosDsp();
virtual void update(void);
void setParamValue(const std::string& path, float value);
float getParamValue(const std::string& path);
private:
template <int INPUTS, int OUTPUTS>
void updateImp(void);
float** fInChannel;
float** fOutChannel;
MapUI* fUI;
#if MIDICTRL
teensy_midi* fMIDIHandler;
MidiUI* fMIDIInterface;
#endif
dsp* fDSP;
};
#endif
sletz
rmichon
Hello,
I've compiled and installed faust to use the faust2teensy. I use the command:
faust2teensy -lib FaustVoice.dspThe cpp and h file are different from the files generated by the faust IDE online. The teensy compiler then crashes with a lot of error (while it doesn't with the files generated by the online IDE)
Also the parameter -nvoices seems having no effect.
the reason why I'm using the compiled faust2teensy and not the exporter is that I need support for polyphony and the online exporter seems to not export polyphonic voices.
Any hint will be very useful. Thanks!!!