Class: EDL::TimewarpMatcher

Inherits:
Matcher
  • Object
show all
Defined in:
lib/edl.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Matcher

#matches?

Constructor Details

#initialize(fps) ⇒ TimewarpMatcher

Returns a new instance of TimewarpMatcher.



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# File 'lib/edl.rb', line 209

def initialize(fps)
  @fps = fps
  @regexp = /M2(\s+)(\w+)(\s+)(\-?\d+\.\d+)(\s+)(\d{1,2}):(\d{1,2}):(\d{1,2}):(\d{1,2})/
end

Instance Attribute Details

#fps ⇒ Object (readonly)

Returns the value of attribute fps.



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# File 'lib/edl.rb', line 207

def fps
  @fps
end

Instance Method Details

#apply(stack, line) ⇒ Object 



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# File 'lib/edl.rb', line 214

def apply(stack, line)
  matches = line.scan(@regexp).flatten.map{|e| e.strip}.reject{|e| e.nil? || e.empty?}
  
  from_reel = matches.shift
  fps = matches.shift
  
  begin
    # FIXME
    tw_start_source_tc = Parser.timecode_from_line_elements(matches, @fps)
  rescue Timecode::Error => e
    raise ApplyError, "Invalid TC in timewarp (#{e})", line
  end
  
  evt_with_tw = stack.reverse.find{|e| e.src_start_tc == tw_start_source_tc && e.reel == from_reel }
  
  unless evt_with_tw
    raise ApplyError, "Cannot find event marked by timewarp", line
  else
    tw = Timewarp.new
    tw.actual_framerate, tw.clip = fps.to_f, evt_with_tw
    evt_with_tw.timewarp = tw
  end
end