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|
--
-- melisma - extensible and scriptable audio engine
-- Copyright (C) 2026 Ludvig Gunne Lindström
--
-- This program 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 <https://www.gnu.org/licenses/>.
--
local m_ladspa = require 'melisma.ladspa'
local M = {}
function M.init(spec,...)
local interface = {}
local info = m_ladspa.info(spec)
local instance = m_ladspa.load(spec,...)
local audio_index = 1
local control_index = 1
for _,port in ipairs(info.ports) do
if port.type == 'control' and port.direction == 'input' then
local control_index_copy = control_index
interface[port.name] = function(self,value)
if port.hints.upper_bound and value > port.hints.upper_bound then
value = port.hints.upper_bound
end
if port.hints.lower_bound and value < port.hints.lower_bound then
value = port.hints.lower_bound
end
instance:control(control_index_copy,value)
return self
end
if port.hints.default then
interface[port.name](nil,port.hints.default)
end
control_index = control_index + 1
end
if port.type == 'audio' and port.direction == 'output' then
interface[port.name] = instance(audio_index)
audio_index = audio_index + 1
end
end
return interface
end
return M
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