Class: MTP::Playlist

Inherits:
Object show all
Includes:
Enumerable
Defined in:
lib/mtp/playlist.rb

Constant Summary

Constants inherited from Object

Object::PROTECTION_STATUS

Instance Attribute Summary

Attributes inherited from Object

#association, #compressed_size, #data, #date_created, #date_modified, #filename, #format, #id, #image_bit_depth, #image_pix_height, #image_pix_with, #keywords, #ph, #properties, #protection_status, #sequence_number, #thumb_compressed_size, #thumb_format, #thumb_pix_height, #thumb_pix_width

Instance Method Summary collapse

Methods inherited from Object

#<=>, #after_sending, #before_sending, #dump_properties, #inspect, load, #new_object?, #pack, property_accessor, property_reader, property_writer, register_format, #valid?

Constructor Details

#initialize ⇒ Playlist

Returns a new instance of Playlist.



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# File 'lib/mtp/playlist.rb', line 8

def initialize
  super
  self.format = "AbstractAudioVideoPlaylist"
  self.compressed_size = 0
  @data = Data.new("\0\0")
end

Instance Method Details

#<<(object) ⇒ Object 



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# File 'lib/mtp/playlist.rb', line 28

def <<(object)
  current_ids = map { |o| o.id }
  current_ids << object.id
  store_references(current_ids)
end

#delete(object) ⇒ Object 



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# File 'lib/mtp/playlist.rb', line 34

def delete(object)
  current_ids = select { |o| o.id != object.id }
  current_ids.map! { |o| o.id }
  store_references(current_ids)
end

#each ⇒ Object 



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# File 'lib/mtp/playlist.rb', line 19

def each
  MTP.logger.info("retrieving playlist reference")
  t = @ph.transaction.get_object_references(id)
  t.expect("OK")
  t.data.payload.unpack("V+").first.each do |object_id|
    yield @ph.device[object_id] unless @ph.device[object_id].nil?
  end
end

#load(ph, id, payload) ⇒ Object 



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# File 'lib/mtp/playlist.rb', line 15

def load(ph, id, payload)
  super(ph, id, payload)
end

#sort!(&block) ⇒ Object 



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# File 'lib/mtp/playlist.rb', line 40

def sort!(&block)
  current_ids = sort(&block).map { |o| o.id }
  store_references(current_ids)
end

#sort_by!(&block) ⇒ Object 



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# File 'lib/mtp/playlist.rb', line 45

def sort_by!(&block)
  current_ids = sort_by(&block).map { |o| o.id }
  store_references(current_ids)
end