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#!/usr/bin/env ruby
def param_sym(n)
('A'.ord + n).chr
end
def make_param_assigns(num)
(0 ... num)
.map { |n| "#{param_sym(n)} = *param[#{n}];" }
.join("\n ")
end
def make_ctrl_port(n, name)
%Q{ a lv2:InputPort , lv2:ControlPort ;
lv2:index #{n} ;
lv2:symbol "#{param_sym(n)}" ;
lv2:name "#{name}" ;
lv2:default 0.5 ;
lv2:minimum 0.0 ;
lv2:maximum 1.0 ;}
end
def make_lv2_port_defs(pi)
num = pi[:n_ctrl_ports]
ctrlports = (0 ... num)
.map { |n| make_ctrl_port(n, pi["ctrl_port_#{param_sym(n)}".to_sym]) }
.join("\n ] , [\n")
ctrlports + %Q{
] , [
a lv2:InputPort , lv2:AudioPort ;
lv2:index #{num} ;
lv2:symbol "in_l" ;
lv2:name "In left" ;
] , [
a lv2:InputPort , lv2:AudioPort ;
lv2:index #{num + 1} ;
lv2:symbol "in_r" ;
lv2:name "In right" ;
] , [
a lv2:OutputPort , lv2:AudioPort ;
lv2:index #{num + 2} ;
lv2:symbol "out_l" ;
lv2:name "Out left" ;
] , [
a lv2:OutputPort , lv2:AudioPort ;
lv2:index #{num + 3} ;
lv2:symbol "out_r" ;
lv2:name "Out right" ;}
end
if ARGV.length < 1
puts "Usage: #{__FILE__} <PluginName>"
exit
end
root = File.dirname(__FILE__)
plugin_name = ARGV[0]
plugin_slug = plugin_name.downcase
target_dir = File.join(root, 'src', plugin_name)
template_dir = File.join(root, 'Template')
PLUGIN_FIELDS = %w{Type Use Description Comment}
def find_plugin_info(db, plugin_name)
pi = { name: plugin_name }
found = false
File.open(db) do |f|
pat = /^\s*(\w+): \"([^"]+)\",/
f.each_line do |line|
break if found && line =~ /^\s*\},$/
pat.match(line) do |m|
if m[1] == 'Name' && m[2] == plugin_name
found = true
elsif found && PLUGIN_FIELDS.include?(m[1])
pi[m[1].downcase.to_sym] = m[2]
end
end
end
end
header_file = File.join('../WinVST', plugin_name, "#{plugin_name}.h")
File.open(header_file) do |f|
f.each_line do |line|
if line =~ /kNumParameters\s*=\s*(\d+)/
pi[:n_ctrl_ports] = $1.to_i
end
end
end
class_file = File.join('../WinVST', plugin_name, "#{plugin_name}.cpp")
fun = ""
File.open(class_file) do |f|
f.each_line do |line|
if line =~ /void #{plugin_name}::(\w+)/
fun = $1
elsif fun == 'getParameterName' and line =~ /case\s+kParam([A-Z])\:\s+vst_strncpy\s*\([^,]*,\s*\"(\w+)\",/
pi["ctrl_port_#{$1}".to_sym] = $2
end
end
end
return pi
end
def get_lv2_plugin_type(plugin_info)
case plugin_info[:type]
when 'Saturation'
'DistortionPlugin'
when 'EQ'
'EQPlugin'
else
'EffectsPlugin'
end
end
puts "Reading plugin info from cheatsheet..."
plugin_info = find_plugin_info(File.join(root, '../../cheatsheet/src/database.js'), plugin_name)
puts "Creating plugin #{plugin_name}..."
puts "Type: #{plugin_info[:type]}"
puts "CTRL ports: #{plugin_info[:n_ctrl_ports]}"
Templates = %w{
manifest.ttl.in
Plugin.ttl
Plugin.h
Plugin.cpp
}
begin
Dir.mkdir(target_dir)
Templates.each do |t|
tpl = IO.read(File.join(template_dir, t))
.gsub('@Plugin@', plugin_name)
.gsub('@plugin@', plugin_slug)
.gsub('@NCtrlPorts@', plugin_info[:n_ctrl_ports].to_s)
.gsub('@AssignParams@', make_param_assigns(plugin_info[:n_ctrl_ports]))
.gsub('@TTLPortDefs@', make_lv2_port_defs(plugin_info))
.gsub('@TTLPluginType@', get_lv2_plugin_type(plugin_info))
fname = t.sub('Plugin', plugin_name)
puts " - #{fname}..."
File.open(File.join(target_dir, fname), "w") do |f|
f.write(tpl)
end
end
rescue SystemCallError => e
puts "Could not create plugin: #{e}"
puts "Aborting!"
end
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