Module: Radio::Signal

Defined in:
lib/radio/signal.rb,
lib/radio/signals/wav.rb,
lib/radio/signals/alsa.rb,
lib/radio/signals/file.rb,
lib/radio/signals/coreaudio.rb

Defined Under Namespace

Classes: ALSA, CoreAudio, File

Class Method Summary collapse

Class Method Details

.devices ⇒ Object

Consolidate all sources from all inputs and add the class name to the keys.



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# File 'lib/radio/signal.rb', line 33

def self.devices
  s = {}
  constants.each do |type|
    eval(type.to_s).devices.each do |id, source|
      s[[type, id]] = source
    end
  end
  s
end

.new(options) ⇒ Object

You can’t new a module so this switches into the specific class.



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# File 'lib/radio/signal.rb', line 44

def self.new options
  type = options.delete :type
  options[:output] = [options[:output]].flatten if options[:output]
  options[:input] = [options[:input]].flatten if options[:input]
  unless constants.include? type.to_sym
    raise NameError, "uninitialized constant Radio::Input::#{type}"
  end
  device = eval(type.to_s).new options
  # Ask for and discard the first sample to report errors here
  begin
    device.out NArray.scomplex(1) if device.output_channels == 2
    device.out NArray.sfloat(1) if device.output_channels == 1
    device.in 1 if device.input_channels > 0
  rescue Exception => e
    device.stop
    raise e
  end
  device
end

.status ⇒ Object

Drivers are supposed to fail silently if they can’t find dependencies. This allows us to present a basic debug screen.



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# File 'lib/radio/signal.rb', line 24

def self.status
  s = {}
  constants.collect do |input_name|
    s[input_name] = eval(input_name.to_s).status
  end
  s
end