jjuliano / ruby-webp

A gem providing a ruby interface to Google WebP Codec.

README for ruby-webp
=====================

Ruby-webp is a gem providing a ruby interface to Google WebP Codec.

To install, type 'gem install ruby-webp'

Usage:

  require 'rubygems'
  require 'ruby-webp'

  # Encoder Example 1

  cwebp = WebP::Encoder.new
  
  cwebp.compression_factor = 70
  cwebp.input_file = "picture.png"
  cwebp.output_file = "picture.webp"
  cwebp.show_config
 => "cwebp -q 70 picture.png -o picture.webp"
  cwebp.encode

  # Encoder Example 2
  
  cwebp = WebP::Encoder.new
 
  cwebp.spatial_noise_shaping = 70
  cwebp.deblocking_filter = 50
  cwebp.strong_filtering = true
  cwebp.auto_filter = true
  cwebp.target_size = 60000
  cwebp.input_file = "picture.png"
  cwebp.output_file = "picture.webp"
  cwebp.show_config
 => "cwebp -sns 70 -f 50 -strong -af -size 60000 picture.png -o picture.webp"
  cwebp.encode

  # Decoder Example 1

  dwebp = WebP::Decoder.new
  dwebp.input_file = "picture.webp"
  dwebp.ouput_file = "output.png"
  dwebp.show_config
 => "dwebp picture.webp -o output.png"
  dwebp.decode
  
  # Decoder Example 2
  
  dwebp = WebP::Decoder.new
  dwebp.input_file = "picture.webp"
  dwebp.output_ppm = true
  dwebp.output_file = "output.ppm"
  dwebp.show_config
 => "dwebp picture.webp -ppm -o output.ppm"
  dwebp.decode