Module: Libsamplerate

Defined in:
lib/utils.rb,
lib/libsamplerate.rb,
lib/libsamplerate/version.rb,
lib/libsamplerate/static_resampler.rb

Defined Under Namespace

Modules: FFI Classes: StaticResampler

Constant Summary collapse

CONVERTERS = 
{
    src_sinc_best_quality: 0,
    src_sinc_medium_quality: 1,
    src_sinc_fastest: 2,
    src_zero_order_hold: 3,
    src_linear: 4
}
VERSION = 
"0.0.1"

Class Method Summary collapse

Class Method Details

.get_float_buffer_from_mono_file(file) ⇒ Object 



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

def self.get_float_buffer_from_mono_file file
  raise "This is not a mono file" if get_sound_file_info(file).channels == 1
  buffer = []
  RubyAudio::Sound.open(file) do |snd|
    snd.read(:float, snd.info.frames).each do |sample|
      buffer.push(sample)
    end
  end
  buffer
end

.get_sound_file_info(file_path) ⇒ Object 



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# File 'lib/utils.rb', line 23

def self.get_sound_file_info file_path
  info = nil
  RubyAudio::Sound.open(file_path) do |snd|
    info = snd.info
  end
  info
end

.stereo_to_mono(file_path) ⇒ Object 



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# File 'lib/utils.rb', line 2

def self.stereo_to_mono file_path
  buffer = []
  RubyAudio::Sound.open(file_path) do |snd|
    snd.read(:float, snd.info.frames).each do |sample|
      buffer.push(sample[0])
    end
  end
  buffer
end