Module: BMFF::Box::Container

Included in:
DataInformation, DataReference, Edit, Media, MediaInformation, Movie, MovieExtends, MovieFragment, MovieFragmentRandomAccess, ProtectionSchemeInfo, SampleDescription, SampleTable, SchemeInformation, TextMetaDataSampleEntry, Track, TrackFragment, TrackGroup, TrackReference, URIMetaSampleEntry, UserData, VisualSampleEntry, XMLMetaDataSampleEntry, FileContainer
Defined in:
lib/bmff/box/container.rb

Overview

vim: set expandtab tabstop=2 shiftwidth=2 softtabstop=2 autoindent:

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#children ⇒ Object

Returns the value of attribute children.



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# File 'lib/bmff/box/container.rb', line 5

def children
  @children
end

Instance Method Details

#add_child(child) ⇒ Object 



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# File 'lib/bmff/box/container.rb', line 22

def add_child(child)
  @children ||= []
  @children << child
end

#container? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bmff/box/container.rb', line 7

def container?
  true
end

#find(boxtype) ⇒ Object

Find a box which has a specific type from my children.



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# File 'lib/bmff/box/container.rb', line 28

def find(boxtype)
  (@children || []).each do |child|
    case boxtype
    when String
      return child if child.type == boxtype
    when Class
      return child if child.kind_of?(boxtype)
    end
  end
  nil
end

#find_all(boxtype) ⇒ Object

Find boxes which have a specific type from my children.



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# File 'lib/bmff/box/container.rb', line 41

def find_all(boxtype)
  found_boxes = []
  (@children || []).each do |child|
    case boxtype
    when String
      found_boxes << child if child.type == boxtype
    when Class
      found_boxes << child if child.kind_of?(boxtype)
    end
  end
  found_boxes
end

#parse_children ⇒ Object 



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# File 'lib/bmff/box/container.rb', line 11

def parse_children
  @children = []
  until eob?
    @children << BMFF::Box.get_box(io, self)
  end
end

#select_descendants(boxtype) ⇒ Object

Find boxes which have a specific type from my descendants.



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# File 'lib/bmff/box/container.rb', line 55

def select_descendants(boxtype)
  selected_boxes = []
  (@children || []).each do |child|
    case boxtype
    when String
      selected_boxes << child if child.type == boxtype
    when Class
      selected_boxes << child if child.kind_of?(boxtype)
    end
    if child.container?
      selected_boxes.concat(child.select_descendants(boxtype))
    end
  end
  selected_boxes
end