Module: MultimediaHelper

Includes:
BashHelper, SystemHelper
Defined in:
lib/sapis/multimedia_helper.rb

Constant Summary collapse

RHYTHMBOX_PLAYLISTS_FILE = 
File.expand_path('.local/share/rhythmbox/playlists.xml', '~')
BANSHEE_DATA_FILE = 
File.expand_path('.config/banshee-1/banshee.db', '~')
AUDIO_FILES_EXTENSIONS = 
['m4a', 'mp3']

Constants included from SystemHelper

SystemHelper::SEARCH_DIRECTORIES, SystemHelper::SEARCH_FILES

Instance Method Summary collapse

Methods included from SystemHelper

current_timezone, find_files, mac?, open_file, symlink, #system_cores_number, #unmount_base_mountpoint, #unrar

Methods included from BashHelper

#encode_bash_filenames, encode_bash_filenames, safe_execute, #safe_execute, #simple_bash_execute, simple_bash_execute

Instance Method Details

#add_playlists_to_banshee(directories, options = {}) ⇒ Object

:directories single entry or array



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# File 'lib/sapis/multimedia_helper.rb', line 189

def add_playlists_to_banshee(directories, options={})
  require 'uri'

  directories = [directories] if !directories.is_a?(Array)

  db_layer = SQLiteLayer.new(BANSHEE_DATA_FILE)

  primary_source_id_music = 1

  db_layer.transaction do
    directories.each do |directory|
      puts "Adding #{directory}..."

      playlist_name = File.basename(directory)

      insertion_values = {
        :PrimarySourceID => primary_source_id_music,
        :Name            => playlist_name,
      }

      playlist_id = db_layer.insert_values('CorePlaylists', insertion_values)

      filenames = AUDIO_FILES_EXTENSIONS.map { |extension| Dir.glob(File.join(directory, "*.#{extension}")) }.flatten.sort

      filenames.each do |filename|
        puts " - #{filename}"

        track_id = banshee_find_track_id(filename, db_layer) || banshee_add_playlist_entry(filename, db_layer, primary_source_id_music)

        insertion_values = {
          :PlaylistID => playlist_id,
          :TrackID    => track_id,
        }

        db_layer.insert_values('CorePlaylistEntries', insertion_values)
      end
    end
  end
end

#add_playlists_to_rhythmbox(directories, options = {}) ⇒ Object

:directories single entry or array



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# File 'lib/sapis/multimedia_helper.rb', line 151

def add_playlists_to_rhythmbox(directories, options={})
  require 'rexml/document'
  require 'uri'

  directories = [directories] if !directories.is_a?(Array)

  raw_xml  = IO.read(RHYTHMBOX_PLAYLISTS_FILE)
  xml_doc  = REXML::Document.new(raw_xml)
  xml_root = xml_doc.elements.first

  directories.each do |directory|
    puts "Adding #{directory}..."

    playlist_name = File.basename(directory)
    filenames     = AUDIO_FILES_EXTENSIONS.map { |extension| Dir.glob(File.join(directory, "*.#{extension}")) }.flatten.sort

    if xml_root.elements.any? { |xml_element| xml_element.attributes['name'] == playlist_name }
      puts ">>> playlist already existent!"
    else
      playlist_node = xml_root.add_element('playlist', 'name' => playlist_name, 'type' => 'static')

      filenames.sort!

      filenames.each do |filename|
        entry_node       = playlist_node.add_element('location')
        encoded_filename = URI.encode(File.expand_path(filename))
        entry_node.text  = "file://" + encoded_filename
      end
    end
  end

  buffer = format_xml_playlist_for_rhythmbox(xml_doc)

  IO.write(RHYTHMBOX_PLAYLISTS_FILE, buffer)
end

#create_m3u_playlist(files_or_pattern, basedir, output) ⇒ Object

Sorts files by name



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# File 'lib/sapis/multimedia_helper.rb', line 105

def create_m3u_playlist(files_or_pattern, basedir, output)
  case files_or_pattern
  when Array
    files = files_or_pattern
    # do nothing
  when String
    files = Dir.glob(files_or_pattern)
  else
    raise "ziokann!! #{files_or_pattern}"
  end

  buffer = "#EXTM3U" << "\n"

  files.sort.each do |file|
    duration = get_audio_file_duration(file)
    song_name = File.basename(file).sub(/\.\w+$/, '')

    buffer << "#EXTINF:#{duration},#{song_name}" << "\n"

    file_relative_path = File.join(basedir, File.basename(file))

    buffer << file_relative_path << "\n"
  end

  IO.write(output, buffer)
end

#encode_alac_to_m4a(file) ⇒ Object 



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# File 'lib/sapis/multimedia_helper.rb', line 91

def encode_alac_to_m4a(file)
  temp_file = file + ".wav"

  simple_bash_execute "ffmpeg -i", file, temp_file

  File.delete(file)

  simple_bash_execute "neroAacEnc -q 0.5", "-if", temp_file, "-of", file

  File.delete(temp_file)
end

#get_audio_file_duration(file) ⇒ Object 



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# File 'lib/sapis/multimedia_helper.rb', line 132

def get_audio_file_duration(file)
  case file
  when /.mp3$/
    duration = safe_execute("mp3info -p '%S' " + encode_bash_filenames(file))
  when /.m4a$/
   # f#!$ing faad writes only to stderr
   #
    raw_result = safe_execute('faad -i ' + encode_bash_filenames(file) + " 2>&1")

    duration = raw_result[/(\d+)\.\d+ secs/, 1] || raise("z.k.!!")
  else
    raise "ziokann!!! #{file}"
  end

  duration.to_i
end

#image_format(image_data) ⇒ Object 



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# File 'lib/sapis/multimedia_helper.rb', line 31

def image_format(image_data)
  if image_data.start_with?('GIF8')
    'gif'
  elsif image_data.start_with?("\xFF\xD8\xFF\xE0")
    'jpg'
  else
    raise "Unrecognized picture format."
  end
end

#normalize_album(directory, extension) ⇒ Object

Works on a single folder - no recursion.



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# File 'lib/sapis/multimedia_helper.rb', line 70

def normalize_album(directory, extension)
  case extension
  when 'm4a'
    program   = 'aacgain'
  when 'mp3'
    program   = 'mp3gain'
  else
    raise "Unsupported extension: #{extension}"
  end

  files         = Dir.glob(File.join(directory, "*.#{extension}"))
  encoded_files = encode_bash_filenames(*files)

  # The m.f. popen3 hangs when normalizing, possibly because aacgain rewrites to screen because of the counter
  # F**K F**K
  #
  # Regardless, aacgain appears to be broken, as if an error happens, it still exits successfully.
  #
  safe_execute "#{program} -a -k " + encoded_files + " 2> /dev/null"
end

#normalize_songs(*files) ⇒ Object 



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# File 'lib/sapis/multimedia_helper.rb', line 51

def normalize_songs(*files)
  files.flatten!

  mp3_files = files.select { |file| file =~ /\.mp3$/i }
  mp4_files = files.select { |file| file =~ /\.m4a$/i }

  raise "xxx!" if mp3_files.size + mp4_files.size != files.size

  if mp3_files.size != 0
    simple_bash_execute "mp3gain -r", mp3_files
  end

  if mp4_files.size != 0
    simple_bash_execute "aacgain -r", mp4_files
  end
end

#play_audio_file(filename) ⇒ Object 



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# File 'lib/sapis/multimedia_helper.rb', line 41

def play_audio_file(filename)
  filename = File.expand_path(filename)

  if SystemHelper.mac?
    simple_bash_execute 'afplay', filename
  else
    simple_bash_execute "gst-launch-1.0 playbin -q", "uri=file://#{filename}"
  end
end