Class: AudioTrack

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(wavefile, duration) ⇒ AudioTrack

Returns a new instance of AudioTrack.



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# File 'lib/rtrack.rb', line 9

def initialize (wavefile, duration)
  @wavefile = wavefile
  @duration = duration
end

Instance Attribute Details

#duration ⇒ Object (readonly)

Returns the value of attribute duration.



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# File 'lib/rtrack.rb', line 7

def duration
  @duration
end

#wavefile ⇒ Object (readonly)

Returns the value of attribute wavefile.



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# File 'lib/rtrack.rb', line 7

def wavefile
  @wavefile
end

Class Method Details

.from_file(infile) ⇒ Object 



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# File 'lib/rtrack.rb', line 14

def self.from_file(infile)
  if not (File.exists? infile)
    fail StandardError, "Couldn't find file from path: #{infile}"
  end
  infile = File.open(infile)
  wavefile = Tempfile.new ['','.wav']
  duration = RTrack::Transcoder.to_wave(infile.path, wavefile.path)
  AudioTrack.new wavefile, duration
end

Instance Method Details

#+(other) ⇒ Object 



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# File 'lib/rtrack.rb', line 47

def +(other)
  info = RTrack::Transcoder.concat @wavefile.path, other.wavefile.path
  AudioTrack.new info["wavefile"], info["duration"]
end

#[](slice_range) ⇒ Object 



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# File 'lib/rtrack.rb', line 32

def [](slice_range)
  if not slice_range.class == Range
    fail StandardError, "Invalid slice was given: #{slice_range}"
  end
  
  slice_start, slice_end = slice_range.min, slice_range.max
  new_wavefile = Tempfile.new ['','.wav']
  duration = RTrack::Transcoder.to_slice(@wavefile.path,
    new_wavefile.path,
    slice_start,
    slice_end)
  
  AudioTrack.new new_wavefile, duration
end

#export(outpath, format = "mp3", bitrate = "128k") ⇒ Object Also known as: save 



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# File 'lib/rtrack.rb', line 52

def export(outpath, format="mp3", bitrate="128k")
  return_code = RTrack::Transcoder.export(@wavefile.path, outpath, format, bitrate)
  return_code
end

#path ⇒ Object 



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# File 'lib/rtrack.rb', line 28

def path
  @wavefile.path
end

#seconds ⇒ Object 



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# File 'lib/rtrack.rb', line 24

def seconds
  @duration / 1000
end