portaudio.jl

# ************************************************************************
# FAUST Architecture File
# Copyright (C) 2021 GRAME, Centre National de Creation Musicale
# ---------------------------------------------------------------------

# This is sample code. This file is provided as an example of minimal
# FAUST architecture file. Redistribution and use in source and binary
# forms, with or without modification, in part or in full are permitted.
# In particular you can create a derived work of this FAUST architecture
# and distribute that work under terms of your choice.

# This sample code 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.
# ************************************************************************

const FAUSTFLOAT = Float32

# Architecture
abstract type UI end

# One can override the behavior by defining another set of function that takes a different concrete UI type

# -- widget's layouts
function openTabBox(label::String)
end
function openHorizontalBox(label::String)
end
function openVerticalBox(label::String)
end
function closeBox()
end

# -- active widgets
function addButton(ui_interface::UI, label::String, param::Symbol) 
end
function addCheckButton(ui_interface::UI, label::String, param::Symbol) 
end
function addHorizontalSlider(ui_interface::UI, label::String, param::Symbol, init::FAUSTFLOAT, min::FAUSTFLOAT, max::FAUSTFLOAT, step::FAUSTFLOAT) 
end
function addVerticalSlider(ui_interface::UI, label::String, param::Symbol, init::FAUSTFLOAT, min::FAUSTFLOAT, max::FAUSTFLOAT, step::FAUSTFLOAT) 
end
function addNumEntry(ui_interface::UI, label::String, param::Symbol, init::FAUSTFLOAT, min::FAUSTFLOAT, max::FAUSTFLOAT, step::FAUSTFLOAT) 
end

# -- passive widgets
function addHorizontalBargraph(ui_interface::UI, label::String, param::Symbol, min::FAUSTFLOAT, max::FAUSTFLOAT)
end
function addVerticalBargraph(ui_interface::UI, label::String, param::Symbol, min::FAUSTFLOAT, max::FAUSTFLOAT)
end

# -- soundfiles
function addSoundfile(ui_interface::UI, label::String, filename::String, soundfile::Symbol) 
end

# -- metadata declarations
function declare(ui_interface::UI, key::String, val::String) 
end

# Generated code
<<includeIntrinsic>>
<<includeclass>>

# Testing
samplerate = Int32(44100)
block_size = Int32(512)

# Using PortAudio
# import Pkg; Pkg.add("PortAudio")
using PortAudio

devices = PortAudio.devices()
#dev = filter(x -> x.maxinchans == 2 && x.maxoutchans == 2, devices)[1]

# Selecting a Duplex device here
dev = devices[10]

PortAudioStream(dev, dev) do stream
    dsp = mydsp{Float32}()
    println("getNumInputsmydsp ", getNumInputsmydsp(dsp))
    println("getNumOutputsmydsp ", getNumOutputsmydsp(dsp))
    initmydsp(dsp, samplerate)
    outputs = zeros(Float32, block_size, getNumOutputsmydsp(dsp))
    while true
        inputs = convert(Matrix{Float32}, read(stream, block_size))
        computemydsp(dsp, block_size, inputs, outputs)
        write(stream, outputs)
    end
end