Class: FinalCutPro::SequenceProcessor

Inherits:
Object
  • Object
show all
Extended by:
TimecodeMethods
Defined in:
lib/final_cut_pro/sequence_processor.rb

Class Attribute Summary collapse

Class Method Summary collapse

Methods included from TimecodeMethods

convert_frames_time_base, convert_frames_time_base, convert_time_base, convert_time_base, frames_to_drop_frame_timecode, frames_to_drop_frame_timecode, frames_to_timecode, frames_to_timecode, timecode_to_frames, timecode_to_frames

Class Attribute Details

.logger ⇒ Object 



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# File 'lib/final_cut_pro/sequence_processor.rb', line 12

def logger; @logger ||= Logger.new(STDOUT) end

Class Method Details

.parse_xml(xml) ⇒ Object 



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# File 'lib/final_cut_pro/sequence_processor.rb', line 14

def parse_xml(xml)
  doc = FinalCutPro::XMLParser.load(xml)
  sequences = doc.parse_sequences(xml)
  process(sequences)
end

.process(sequences) ⇒ Object 



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# File 'lib/final_cut_pro/sequence_processor.rb', line 20

def process(sequences)
  files = { }
  clips = [ ]
  _sequences = { }
  [*sequences].each do |sequence|
    sequence_id = sequence[:id]
    clip_items = sequence[:clip_items]
    next unless clip_items
    clip_item_counter = 0
    clip_items_count = clip_items.count
    clip_items.each do |clip_item|
      clip_item_counter += 1
      #logger.debug { "Clip Item #{clip_item_counter} of #{clip_items_count}"}

      clip_rate = clip_item[:rate]
      clip_time_base = clip_rate[:timebase].to_f
      clip_rate_ntsc = clip_rate[:ntsc] == 'TRUE' ? true : false
      clip_frame_rate = convert_time_base(clip_time_base, clip_rate_ntsc)

      clip_duration_frames = clip_item[:duration].to_i
      clip_duration_seconds = clip_duration_frames / clip_frame_rate

      clip_start_frame = clip_item[:start].to_i
      clip_end_frame = clip_item[:end].to_i

      clip_in_frame = clip_item[:in].to_i
      clip_out_frame = clip_item[:out].to_i


      # File tags may just be a reference to an earlier file tag. A reference only includes an id attribute which we
      # can use to lookup the file from previous parsing.
      file = clip_item[:file] || { }
      file_id = file[:id]
      if file.keys.count == 1
        # We only got the id with this file tag so look it up in our file cache
        file = files[file_id]
      else
        # This file has more than just an ID so it's not a reference to a previous file. Store it in the file cache
        files[file_id] = file
      end
      next unless file

      file_timecode = file[:timecode] || { }
      #file_timecode_value = file_timecode[:string] || '00:00:00:00'
      file_timecode_frame = file_timecode[:frame].to_i

      file_rate = file[:rate] || { }
      file_time_base = file_rate[:timebase]
      file_rate_ntsc = (file_rate[:ntsc] == 'TRUE') ? true : false
      file_frame_rate = convert_time_base(file_time_base, file_rate_ntsc)
      #puts "TB: #{file_time_base} NTSC: #{file_rate_ntsc} FPS: #{file_frame_rate}"
      file_in_frame = clip_in_frame # + file_timecode_frame
      file_out_frame = clip_out_frame # + file_timecode_frame

      # Use the time base and not the frame rate
      file_to_clip_rate_ratio = (file_time_base.to_f / clip_time_base.to_f)

      #file_in_frame_at_clip_frame_rate = clip_in_frame * file_to_clip_rate_ratio
      #file_out_frame_at_clip_frame_rate = clip_out_frame * file_to_clip_rate_ratio

      file_in_timecode = frames_to_timecode(file_in_frame, clip_frame_rate, clip_rate_ntsc, ':')
      file_out_timecode = frames_to_timecode(file_out_frame, clip_frame_rate, clip_rate_ntsc, ':')

      #file_in_timecode_with_offset = TimecodeHelper.timecode_calculator(file_in_timecode, file_out_timecode, file_timecode_value, file_frame_rate)
      file_in_seconds = (file_in_frame/clip_frame_rate) # TimecodeHelper.convert_frames_to_seconds(file_frame_rate, file_in_frame)
      file_out_seconds = (file_out_frame/clip_frame_rate) # TimecodeHelper.convert_frames_to_seconds(file_frame_rate, file_out_frame)

      file_path_url = file[:pathurl] || ''
      file_path = URI.unescape(file_path_url).scan(/.*:\/\/\w*(\/.*)/).flatten.first


      file_in_frame_with_offset = file_timecode_frame + (file_in_frame * file_to_clip_rate_ratio)
      file_out_frame_with_offset = file_timecode_frame + (file_out_frame * file_to_clip_rate_ratio)
      file_in_timecode_with_offset = frames_to_timecode(file_in_frame_with_offset, file_frame_rate, file_rate_ntsc, ';')
      file_out_timecode_with_offset = frames_to_timecode(file_out_frame_with_offset, file_frame_rate, file_rate_ntsc, ';')

      clips << {
        :start_frame => clip_start_frame,
        :end_frame => clip_end_frame,
        :timebase => clip_time_base,
        :ntsc => clip_rate[:ntsc],
        :frame_rate => clip_frame_rate,
        :sequence => { :id => sequence_id },
        :duration_in_seconds => clip_duration_seconds,
        :duration_in_frames => clip_duration_frames,
        :file => {
          :id => file_id,
          :pathurl => file_path_url,
          :path => file_path,
          :timecode => file_timecode,
          :timebase => file_time_base,
          :ntsc => file_rate_ntsc,
          :frame_rate => file_frame_rate,

          :in_frame => file_in_frame,
          :out_frame => file_out_frame,
          :in_seconds => file_in_seconds,
          :out_seconds => file_out_seconds,
          :in_timecode => file_in_timecode,
          :out_timecode => file_out_timecode,
          :in_frame_with_offset => file_in_frame_with_offset,
          :out_frame_with_offset => file_out_frame_with_offset,
          :in_timecode_with_offset => file_in_timecode_with_offset,
          :out_timecode_with_offset => file_out_timecode_with_offset,
        },
      }
      _sequences[sequence_id] = clips
    end
  end
  _sequences
end