Class | Origami::Filter::Flate |
In: |
sources/parser/filters.rb
|
Parent: | Object |
Decodes data using zlib/Inflate decompression method.
stream: | The data to decode. |
# File sources/parser/filters.rb, line 645 645: def decode(stream) 646: 647: uncompressed = Zlib::Inflate.inflate(stream) 648: 649: if not @params[:Predictor].nil? 650: colors = @params.has_key?(:Colors) ? @params[:Colors].to_i : 1 651: bpc = @params.has_key?(:BitsPerComponent) ? @params[:BitsPerComponent].to_i : 8 652: columns = @params.has_key?(:Columns) ? @params[:Columns].to_i : 1 653: 654: uncompressed = Predictor.do_post_prediction(uncompressed, @params[:Predictor].to_i, colors, bpc, columns) 655: end 656: 657: uncompressed 658: end
Encodes data using zlib/Deflate compression method.
stream: | The data to encode. |
# File sources/parser/filters.rb, line 628 628: def encode(stream) 629: 630: if not @params[:Predictor].nil? 631: colors = @params.has_key?(:Colors) ? @params[:Colors].to_i : 1 632: bpc = @params.has_key?(:BitsPerComponent) ? @params[:BitsPerComponent].to_i : 8 633: columns = @params.has_key?(:Columns) ? @params[:Columns].to_i : 1 634: 635: stream = Predictor.do_pre_prediction(stream, @params[:Predictor].to_i, colors, bpc, columns) 636: end 637: 638: Zlib::Deflate.deflate(stream, Zlib::BEST_COMPRESSION) 639: end