Module: BMFF::Box

Defined in:
lib/bmff/box.rb,
lib/bmff/box.rb

Overview

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

Defined Under Namespace

Modules: Container Classes: AudioSampleEntry, Base, BitRate, ChunkLargeOffset, ChunkOffset, CleanAperture, ColourInformation, CompactSampleSize, CompositionOffset, CompositionToDecode, Copyright, DataEntryUrl, DataEntryUrn, DataInformation, DataReference, DegradationPriority, Edit, EditList, FileType, FreeSpace, Full, Handler, HintMediaHeader, HintSampleEntry, LevelAssignment, Map, Media, MediaData, MediaHeader, MediaInformation, MetaDataSampleEntry, Movie, MovieExtends, MovieExtendsHeader, MovieFragment, MovieFragmentHeader, MovieFragmentRandomAccess, MovieFragmentRandomAccessOffset, MovieHeader, NullMediaHeader, OriginalFormat, PaddingBits, PixelAspectRatio, ProgressiveDownloadInfo, ProtectionSchemeInfo, ProtectionSystemSpecificHeader, SampleAuxiliaryInformationOffsets, SampleAuxiliaryInformationSizes, SampleDependencyType, SampleDescription, SampleEncryption, SampleEntry, SampleSize, SampleTable, SampleToChunk, SchemeInformation, SchemeType, ShadowSyncSample, SoundMediaHeader, SubSampleInformation, SyncSample, TextMetaDataSampleEntry, TimeToSample, Track, TrackEncryption, TrackExtends, TrackFragment, TrackFragmentBaseMediaDecodeTime, TrackFragmentHeader, TrackFragmentRandomAccess, TrackGroup, TrackGroupType, TrackHeader, TrackReference, TrackReferenceType, TrackRun, TrackSelection, URI, URIInit, URIMetaSampleEntry, Unknown, UserData, VideoMediaHeader, VisualSampleEntry, XMLMetaDataSampleEntry

Class Method Summary collapse

Class Method Details

.get_box(io, parent, box_class = nil) ⇒ Object 



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# File 'lib/bmff/box.rb', line 97

def self.get_box(io, parent, box_class = nil)
  offset = io.pos
  size = io.get_uint32
  type = io.get_ascii(4)
  largesize = nil
  if size == 1
    largesize = io.get_uint64
  end
  usertype = nil
  if type == 'uuid'
    usertype = io.get_uuid
  end

  if box_class
    klass = box_class
  else
    if usertype
      klass = get_uuid_box_class(usertype)
    else
      klass = get_box_class(type)
    end
  end
  klass ||= BMFF::Box::Unknown
  box = klass.new
  box.io = io
  box.offset = offset
  box.parent = parent
  box.size = size
  box.type = type
  box.largesize = largesize
  box.usertype = usertype

  box.parse
  return box
end

.get_box_class(type) ⇒ Object 



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# File 'lib/bmff/box.rb', line 133

def self.get_box_class(type)
  Map.get_box_class(type)
end

.get_uuid_box_class(uuid) ⇒ Object 



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# File 'lib/bmff/box.rb', line 137

def self.get_uuid_box_class(uuid)
  Map.get_uuid_box_class(uuid)
end