Class: Rupeepeethree::Tagger

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

Defined Under Namespace

Classes: FileNotFound

Class Method Summary collapse

Class Method Details

.clear(mp3) ⇒ Object

clear all tags

Raises:



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# File 'lib/rupeepeethree/tagger.rb', line 65

def self.clear(mp3)
  raise FileNotFound if !File.exist? mp3
  TagLib::MPEG::File.open(mp3) do |f|
    f.strip
  end
end

.print_tags(mp3) ⇒ Object

Raises:



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# File 'lib/rupeepeethree/tagger.rb', line 72

def self.print_tags(mp3)
  raise FileNotFound if !File.exist? mp3
  result = ""
  TagLib::MPEG::File.open(mp3) do |f|
    t = f.id3v2_tag

    result << "title: #{t.title}\n"
    result << "artist: #{t.artist}\n"
    result << "album: #{t.album}\n"
    result << "track number: #{t.track}\n"
    result << "year: #{t.year}\n"

    t.frame_list('APIC').each do |cover|
      result << "image: [#{cover.mime_type}] [#{cover.picture.length} bytes]\n"
    end

    prop = f.audio_properties
    if prop
      result << "Bitrate: #{prop.bitrate}\n"
      result << "Channels: #{prop.channels}\n"
      result << "Sample Rate: #{prop.sample_rate}\n"
      result << "Length: #{sprintf("%.2f", prop.length_in_seconds/60.0)}\n"
    end
  end
  return result
end

.tag(mp3, tags) ⇒ Object

Raises:



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# File 'lib/rupeepeethree/tagger.rb', line 7

def self.tag(mp3,tags)
  raise FileNotFound if !File.exist? mp3
  TagLib::MPEG::File.open(mp3) do |f|
    t = f.id3v2_tag || TagLib::ID3v2::Tag.new
    if tags[:title]
      t.title = tags[:title]
    end
    if tags[:artist]
      t.artist = tags[:artist]
    end
    if tags[:album]
      t.album = tags[:album]
    end
    if tags[:year]
      t.year = tags[:year].to_i
    end
    if tags[:track]
      t.track = tags[:track].to_i
    end
    if tags[:picture]
      image_file = File.expand_path(tags[:picture])
      # delete old frame if it exists
      cover = t.frame_list('APIC').first
      if cover
        t.remove_frame(cover)
      end
      cover = TagLib::ID3v2::AttachedPictureFrame.new
      cover.mime_type = mime_type(image_file)
      cover.type = TagLib::ID3v2::AttachedPictureFrame::FrontCover
      cover.picture = File.open(image_file,"rb"){|f|f.read}
      t.add_frame(cover)
    end
    f.save(TagLib::MPEG::File::ID3v2)
  end
end

.tags(mp3) ⇒ Object

Raises:



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# File 'lib/rupeepeethree/tagger.rb', line 43

def self.tags(mp3)
  raise FileNotFound if !File.exist? mp3
  hash = {}
  TagLib::MPEG::File.open(mp3) do |f|
    t = f.id3v2_tag

    hash[:title] =  t.title
    hash[:artist] = t.artist
    hash[:album] = t.album
    hash[:track_number] = t.track
    hash[:year] = t.year
    properties = f.audio_properties
    hash[:length] = properties.length_in_seconds
    picture = t.frame_list("APIC").first
    if picture
      hash[:picture] = { mime_type: picture.mime_type, data: picture.picture }
    end
  end
  hash
end