module AudioPlayback

Ensure that the audio system is initialized @return [Boolean]

# File lib/audio-playback.rb, line 58
def self.ensure_initialized
  @initialized ||= FFI::PortAudio::API.Pa_Initialize
end

List the available audio output devices @return [Array<String>]

# File lib/audio-playback.rb, line 52
def self.list_devices
  Device::Output.list
end

Convenience method to play an audio file @param [Array<::File>, Array<String>, ::File, String] file_paths @param [Hash] options @option options [Integer] :buffer_size Buffer size in bytes. Defaults to 4096 @option options [Array<Integer>, Integer] :channels (or: :channel) Output audio to the given channel(s). Eg ‘:channels => [0,1]` will direct the audio to channels 0 and 1. Defaults to use all available channels @option options [Numeric] :duration Play for given time in seconds @option options [Numeric] :end_position Stop at given time position in seconds (will use :duration if both are included) @option options [Boolean] :is_looping (or :loop) Whether to loop audio @option options [Float] :latency Latency in seconds. Defaults to use the default latency for the selected output device @option options [IO] :logger Logger object @option options [Numeric] :seek Start at given time position in seconds @option options [Integer, String] :output_device (or: :output) Output device id or name

# File lib/audio-playback.rb, line 42
def self.play(file_paths, options = {})
  sounds = Array(file_paths).map { |path| Sound.load(path, options) }
  requested_device = options[:output_device] || options[:output]
  output = Device::Output.by_name(requested_device) || Device::Output.by_id(requested_device) || Device.default_output
  options[:is_looping] ||= options[:loop]
  Playback.play(sounds, output, options)
end