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#!/home/rgareus/src/ardour/gtk2_ardour/arlua

--set_debug_options ("Pool")
--set_debug_options ("SessionEvents")

-- setup audio-engine (global)
AudioEngine:set_backend("None (Dummy)", "", "")
--AudioEngine:set_backend("JACK", "", "") -- connect to JACK

-- create a test session, or load it, if it exists

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ardour { ["type"] = "dsp", name = "Lua B-Format Reverb", license = "MIT", author = "Ardour Team", description = [[Another simple DSP example]] }

function dsp_ioconfig () return
	{
		{ audio_in = 5, audio_out = 4},
	}
end

local conv

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ardour { ["type"] = "dsp", name = "Beelzebub Maximizer", category = "Dynamics", license = "MIT", author = "Ardour Team", description = [[Barry's Satan Maximizer]] }
-- this is based on swh's https://github.com/swh/ladspa/blob/master/satan_maximiser_1408.xml

function dsp_ioconfig () return
	-- -1, -1 = any number of channels as long as input and output count matches
	{ { audio_in = -1, audio_out = -1 } }
end

function dsp_params ()
	return

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// g++ -o cpu cpu.cc && cpu

#include <iostream>
#include <vector>
#include <string.h>
#include <bitset>
#include <array>
#include <string>
#include <cpuid.h>

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/* firstNZsample.c - print time of first non-zero audio sample 
 *
 * (C) 2009 Robin Gareus <robin@gareus.org> 
 * GPLv2 https://www.gnu.org/licenses/gpl-2.0.html
 *
 * compile with:
 *   gcc -o firstNZsample firstNZsample.c -Wall -lsndfile
 */
#include <stdio.h>
#include <stdlib.h>

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ardour {
	["type"] = "dsp",
	name = "Lua IR Capture and Convolver",
	license = "MIT",
	author = "Ardour Team",
	description = [[Another DSP example]]
}

function dsp_ioconfig () return
	{

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#!/usr/bin/env python3

from gi.repository import GLib

import atexit
import dbus
import dbus.service
import dbus.mainloop.glib

class ScreenSaverProxy(dbus.service.Object):

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Recommendations for Linux Plugin Vendors

Plugins should not rely on external (system-wide) resources, and must be statically linked (except for libc, libX11, and lib/server interfaces).

First of all, one cannot reply that a given compatible shared library is present on the target system. But the real issue however are ABI conflicts:

Say you have one plugin linking against system-wide libaubio.so.2 and another plugin using libaubio.so.3.

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#!/usr/bin/python3

# https://pyusb.github.io/pyusb/ -- python3-usb
import usb.core

## Focusrite(R) Scarlett 18i6
device = usb.core.find(idVendor= 0x1235, idProduct=0x8004)

if device is None:
  raise ValueError('Device not found')

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*.swp
*.lv2/
*-svg/