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Contents
require 'image_optim/worker' class ImageOptim class Worker # http://www.ijg.org/ # # Uses jpegtran through jpegrescan if enabled, jpegrescan is vendored with # this gem class Jpegtran < Worker COPY_CHUNKS_OPTION = option(:copy_chunks, false, 'Copy all chunks'){ |v| !!v } PROGRESSIVE_OPTION = option(:progressive, true, 'Create progressive JPEG file'){ |v| !!v } JPEGRESCAN_OPTION = option(:jpegrescan, true, 'Use jpegtran through jpegrescan, '\ 'ignore progressive option'){ |v| !!v } def used_bins jpegrescan ? [:jpegtran, :jpegrescan] : [:jpegtran] end def optimize(src, dst) if jpegrescan args = %W[ #{src} #{dst} ] args.unshift '-s' unless copy_chunks resolve_bin!(:jpegtran) execute(:jpegrescan, *args) && optimized?(src, dst) else args = %W[ -optimize -outfile #{dst} #{src} ] args.unshift '-copy', (copy_chunks ? 'all' : 'none') args.unshift '-progressive' if progressive execute(:jpegtran, *args) && optimized?(src, dst) end end end end end
Version data entries
5 entries across 5 versions & 2 rubygems