Module: M4S::Layout::InitMp4Builder

Defined in:
lib/m4s/layout/init_mp4_builder.rb

Class Method Summary collapse

Class Method Details

.call(cache, track_id) ⇒ Object 



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# File 'lib/m4s/layout/init_mp4_builder.rb', line 5

def call(cache, track_id)
  # binding.pry
  track = cache.track(track_id)

  container = Container.new(root: true)

  container.add_atom Ftyp.generate(cache)

  container.add_container :moov do |moov|
    moov.add_atom Mvhd.generate(cache)

    moov.add_container :trak do |trak|
      trak.add_atom Tkhd.generate(cache, track: track)

      trak.add_container :edts do |edts|
        edts.add_atom Elst.generate(cache, track: track)
      end

      trak.add_container :mdia do |mdia|
        # if track.fetch('handler_type') == 'vide'
        mdia.add_atom Mdhd.generate(cache, track: track)
        mdia.add_atom Hdlr.generate(cache, track: track)

        mdia.add_container :minf do |minf|
          minf.add_atom VSmhd.generate(cache, track: track)
          minf.add_atom Dinf.generate(cache, track: track)

          minf.add_container :stbl do |stbl|
            stbl.add_atom Stsd.generate(cache, track: track)
            stbl.add_atom Stts.generate(cache, track: track)

            if track['handler_type'] == 'vide'
              stbl.add_atom Stss.generate(cache, track: track)
              stbl.add_atom Ctts.generate(cache, track: track) if track['have_composition_time'].nonzero?
            end

            stbl.add_atom Stsc.generate(cache, track: track)
            stbl.add_atom Stsz.generate(cache, track: track)
            stbl.add_atom Stco.generate(cache, track: track)
          end
        end
      end
    end

    moov.add_container :mvex do |mvex|
      mvex.add_atom Trex.generate(cache)
    end
  end

  container
end