Contents

require 'rubygems'
require 'bundler'

Bundler.setup

require 'benchmark'
require 'chunky_png'

def image_file(name)
  File.join(File.dirname(__FILE__), '..', 'spec', 'resources', name)
end

def image_data(name)
  data = nil
  File.open(image_file(name), 'rb') { |f| data = f.read }
  data
end

png_stream       = image_data('pixelstream_reference.png')
rgba_pixelstream = image_data('pixelstream.rgba')
rgb_pixelstream  = image_data('pixelstream.rgb')

n = (ENV['N'] || '5').to_i

puts "---------------------------------------------"
puts "ChunkyPNG (#{ChunkyPNG::VERSION}) decoding benchmark (n=#{n})"
puts "---------------------------------------------"
puts

Benchmark.bmbm do |x|
  x.report('From PNG stream')       { n.times { ChunkyPNG::Image.from_blob(png_stream) } }
  x.report('From RGBA pixelstream') { n.times { ChunkyPNG::Image.from_rgba_stream(240, 180, rgba_pixelstream) } }
  x.report('From RGB pixelstream')  { n.times { ChunkyPNG::Image.from_rgb_stream(240, 180, rgb_pixelstream) } }
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
chunky_png-0.9.2	benchmarks/decoding_benchmark.rb
chunky_png-0.9.1	benchmarks/decoding_benchmark.rb