Class: ImageOptim::Worker::Pngout

Inherits:
ImageOptim::Worker show all
Defined in:
lib/image_optim/worker/pngout.rb

Overview

www.advsys.net/ken/util/pngout.htm

Constant Summary collapse

COPY_CHUNKS_OPTION = 
option(:copy_chunks, false, 'Copy optional chunks'){ |v| !!v }
STRATEGY_OPTION = 
option(:strategy, 0, 'Strategy: ' \
                     '`0` - xtreme, ' \
                     '`1` - intense, ' \
                     '`2` - longest Match, ' \
                     '`3` - huffman Only, ' \
                     '`4` - uncompressed') do |v|
  OptionHelpers.limit_with_range(v.to_i, 0..4)
end

Instance Method Summary collapse

Methods inherited from ImageOptim::Worker

#image_formats, #initialize, #inspect, #optimized?, #options, #resolve_used_bins!, #used_bins

Methods included from ClassMethods

#bin_sym, #create_all, #create_all_by_format, extended, #inherited, #klasses, #option, #option_definitions

Constructor Details

This class inherits a constructor from ImageOptim::Worker

Instance Method Details

#optimize(src, dst, options = {}) ⇒ Object 



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# File 'lib/image_optim/worker/pngout.rb', line 27

def optimize(src, dst, options = {})
  args = %W[
    -k#{copy_chunks ? 1 : 0}
    -s#{strategy}
    -q
    -y
    #{src}
    #{dst}
  ]
  execute(:pngout, args, options) && optimized?(src, dst)
rescue SignalException => e
  raise unless Signal.list.key(e.signo) == 'SEGV'
  raise unless resolve_bin!(:pngout).version <= '20150920'

  warn "pngout caused Segmentation fault for #{src}"
end

#run_order ⇒ Object 



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# File 'lib/image_optim/worker/pngout.rb', line 23

def run_order
  2
end