Polyphony for the Daisy Seed

[ghoppla]

Polyphony for the Daisy Seed

Compiling faust generated cpp using faust2daisy with -nvoices > 1 fails because of dynamic_casts in poly-dsp.h

ex_faust.cpp: In member function 'void dsp_voice_group::buildUserInterface(UI*)':
ex_faust.cpp:10312:35: error: 'dynamic_cast' not permitted with '-fno-rtti'
10312 |             if (!fGroupControl || dynamic_cast<SoundUIInterface*>(ui_interface)) {
      |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ex_faust.cpp: In member function 'virtual void mydsp_poly::buildUserInterface(UI*)':
ex_faust.cpp:10669:17: error: 'dynamic_cast' not permitted with '-fno-rtti'
10669 |             if (dynamic_cast<midi_interface*>(ui_interface)) {
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ex_faust.cpp:10670:32: error: 'dynamic_cast' not permitted with '-fno-rtti'
10670 |                 fMidiHandler = dynamic_cast<midi_interface*>(ui_interface);
      |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make: *** [/home/georg/Programmierung/daisy/libDaisy/core/Makefile:271: build/ex_faust.o] Fehler 1

Removing the -fno-rtti Option in libDaisy shouldn't be considered:
electro-smith/libDaisy#503

Steps for reproduction

Versions Used:

• Faust v2.76.0
• libDaisy v7.1.0

Daisy Toolchain Setup on Linux:

1. Create a folder, e.g.

   $ mkdir ~/daisy

2. Get arm-none-eabi:

   • See DaisyWiki

3. Get libDaisy:

   $ git clone --recurse-submodules https://github.com/electro-smith/libDaisy

4. Create environment.rc file with the following content:

   export LIBDAISY_DIR=~/daisy/libDaisy
   
   GCC_PATH=~/daisy/gcc-arm-none-eabi-10-2020-q4-major/bin
   export PATH=$GCC_PATH:$PATH

5. Compile libDaisy:

   $ source environment.rc
   $ cd libDaisy
   $ make

** Compilation: **

1. dsp file minimal_example.dsp

import("stdfaust.lib");
declare name "Daisy Seed Bug";
declare options "[midi:on]";
declare options "[nvoices:4]";

gate = button("gate");
vel = hslider("gain", 0, 0, 1, .01);
freq = hslider("freq", 440, 0, 20000, 0.01);

process = os.triangle(freq) * vel : _*en.adsr(.1,.1,.7,.2, gate) <: _,_;

2. Generated cpp code with:

$ faust2daisy -nvoices 4 -midi -sr 48000 -bs 32 -uim -source minimal_example.dsp