Class: Thwomp::Renderers::SWF

Inherits:
Object
  • Object
show all
Includes:
Helper
Defined in:
lib/thwomp/renderers/swf.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helper

#frame_number, #sort

Constructor Details

#initialize(url, options = {}) ⇒ SWF

Returns a new instance of SWF.



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# File 'lib/thwomp/renderers/swf.rb', line 14

def initialize(url, options={})
  @filename = Downloader.new(url).filename
  @frame_count = options.fetch(:frame_count) { 10 }
  @width = options.fetch(:width) { 500 }
  @height = options.fetch(:height) { 500 }
end

Instance Attribute Details

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/thwomp/renderers/swf.rb', line 12

def filename
  @filename
end

#frame_count ⇒ Object (readonly)

Returns the value of attribute frame_count.



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# File 'lib/thwomp/renderers/swf.rb', line 12

def frame_count
  @frame_count
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/thwomp/renderers/swf.rb', line 12

def height
  @height
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/thwomp/renderers/swf.rb', line 12

def width
  @width
end

Instance Method Details

#executable ⇒ Object 



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# File 'lib/thwomp/renderers/swf.rb', line 56

def executable
  Thwomp.gnash_path || "gnash-dump"
end

#frame(number) ⇒ Object 



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# File 'lib/thwomp/renderers/swf.rb', line 34

def frame(number)
  timestamp = Time.now.to_i

  Command.exec(
    "#{executable} -s1 --screenshot=#{number}" \
    " --screenshot-file=#{output_file(timestamp)}" \
    " -1 -r1 --timeout 200 #{filename} -j #{width}" \
    " -k #{height} > /dev/null 2>&1"
  )

  "#{Dir.tmpdir}/frame_#{timestamp}_#{number}.png"
end

#frame_batch ⇒ Object 



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# File 'lib/thwomp/renderers/swf.rb', line 47

def frame_batch
  batch = ['last'] + (0..frame_count).to_a.reverse
  batch.join(',')
end

#frames ⇒ Object 



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# File 'lib/thwomp/renderers/swf.rb', line 21

def frames
  timestamp = Time.now.to_i

  Command.exec(
    "#{executable} -s1 --screenshot=#{frame_batch}" \
    " --screenshot-file=#{output_file(timestamp)}" \
    " -1 -r1 --timeout 200 #{filename} -j #{width}" \
    " -k #{height} > /dev/null 2>&1"
  )

  sort Dir.glob("#{Dir.tmpdir}/frame_#{timestamp}_*.png")
end

#output_file(timestamp) ⇒ Object 



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# File 'lib/thwomp/renderers/swf.rb', line 52

def output_file(timestamp)
  "#{Dir.tmpdir}/frame_#{timestamp}_%f.png"
end