Class: AutoEQLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/autoeq_loader.rb

Defined Under Namespace

Classes: ParametricEqualizerFilter, VolumeFilter

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ AutoEQLoader

Returns a new instance of AutoEQLoader.



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# File 'lib/autoeq_loader.rb', line 12

def initialize(file)
  @file = file
  @name = File.basename(File.dirname(file))
  @volume_filter = @equalizer_filters = nil
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/autoeq_loader.rb', line 3

def name
  @name
end

Class Method Details

.load_equalizers(dir) ⇒ Object 



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# File 'lib/autoeq_loader.rb', line 5

def self.load_equalizers(dir)
  dir = File.expand_path(dir)
  Dir.glob('**/*ParametricEQ.txt', base: dir, sort: false).map do |file|
    new(File.join(dir, file))
  end.sort
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/autoeq_loader.rb', line 35

def <=>(other)
  @name <=> other.name
end

#load ⇒ Object 



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# File 'lib/autoeq_loader.rb', line 18

def load
  @volume_filter = VolumeFilter.new(0.0)
  @equalizer_filters = []
  File.open(@file) do |io|
    io.readlines.map { |l| l.sub(/#.*/, '') }.map(&:strip).reject(&:empty?).each do |line|
      case line
      when /^Preamp: ([-.\d]+) dB$/
        @volume_filter = VolumeFilter.new($1.to_f)
      when /^Filter \d+: ON .+? Fc (\d+) Hz Gain ([-.\d]+) dB Q ([-.\d]+)$/
        @equalizer_filters << ParametricEqualizerFilter.new($1.to_i, $2.to_f, $3.to_f, 'q')
      else
        warn "#{@file}: Ignoring unknown eq line: #{line.inspect}"
      end
    end
  end
end

#to_s(enabled = true) ⇒ Object 



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# File 'lib/autoeq_loader.rb', line 39

def to_s(enabled=true)
  load unless @volume_filter
  [
    @volume_filter,
    enabled ? @equalizer_filters : nil,
  ].flatten.compact.map(&:to_s).join(',')
end