Class: FileData::IlstBoxParser

Inherits:
Object
  • Object
show all
Defined in:
lib/file_data/formats/mpeg4/box_parsers/ilst_box.rb

Overview

Parsers for the ‘ilst’ box

Class Method Summary collapse

Class Method Details

.find_data_box(parent_view, parent_size) ⇒ Object 



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# File 'lib/file_data/formats/mpeg4/box_parsers/ilst_box.rb', line 18

def self.find_data_box(parent_view, parent_size)
  view = Helpers::SubStreamView.new(parent_view.stream, parent_view.stream.pos, parent_size - 8)
  BoxesReader.read(view).find { |box| box.type == 'data' }
end

.parse(view) ⇒ Object 



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# File 'lib/file_data/formats/mpeg4/box_parsers/ilst_box.rb', line 8

def self.parse(view)
  size = view.read_value(4)
  index = view.read_value(4)

  db = find_data_box(view, size)
  data_box = db.nil? ? nil : IlstDataBoxParser.parse(db)

  IlstBox.new(index, data_box)
end