Class: Typingpool::Filer::Files::Audio

Inherits:
Typingpool::Filer::Files show all
Defined in:
lib/typingpool/filer/files/audio.rb

Overview

Handler for collection of Filer::Audio instances. Does everything Filer::Files does, plus can batch convert to mp3 an can merge the Filer::Audio instances into a single audio file, provided they are in mp3 format.

Instance Attribute Summary

Attributes inherited from Typingpool::Filer::Files

#files

Instance Method Summary collapse

Methods inherited from Typingpool::Filer::Files

#as, #each, #mv!, #to_streams

Methods included from Utility::Castable

#as, included

Constructor Details

#initialize(files) ⇒ Audio

Constructor. Takes an array of Filer or Filer subclass instances.



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# File 'lib/typingpool/filer/files/audio.rb', line 12

def initialize(files)
  @files = files.map{|file| self.file(file.path) }
end

Instance Method Details

#file(path) ⇒ Object 



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# File 'lib/typingpool/filer/files/audio.rb', line 16

def file(path)
  Filer::Audio.new(path)
end

#merge(into_file) ⇒ Object

Merge Filer::Audio instances into a single new file, provided they are all in mp3 format.

Params

into_file

Filer or Filer subclass instance corresponding to

the location of the new, merged file that should be created.

Returns

Filer::Audio instance corresponding to the new, merged file.

Raises:



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# File 'lib/typingpool/filer/files/audio.rb', line 49

def merge(into_file)
  raise Error::Argument, "No files to merge" if self.to_a.empty?
  if self.count > 1
    Utility.system_quietly('mp3wrap', into_file, *self.to_a)
    written = File.join(into_file.dir, "#{File.basename(into_file.path, '.*') }_MP3WRAP.mp3")
    FileUtils.mv(written, into_file)
  else
    FileUtils.cp(self.first, into_file)
  end
  self.file(into_file.path)
end

#to_mp3(dest_dir, bitrate = nil) ⇒ Object

Batch convert Filer::Audio instances to mp3 format.

Params

dest_dir

Filer::Dir instance corresponding to directory into which mp3 file versions will be created.

bitrate

See documentation for Filer::Audio#bitrate.

Returns

Filer::Files::Audio instance corresponding to new mp3 versions of the original files or, in the case where the original file was already in mp3 format, corresponding to the original files themselves.



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# File 'lib/typingpool/filer/files/audio.rb', line 30

def to_mp3(dest_dir, bitrate=nil)
  mp3s = self.map do |file|
    if file.mp3?
      file
    else
      yield(file) if block_given?
      file.to_mp3(dest_dir.file("#{File.basename(file.path, '.*') }.mp3"), bitrate)
    end
  end
  self.class.new(mp3s)
end