Sha256: 48f72a7e7a5a121d8cff9b16d5465b121e73ab50c2148459eac1da870f46ea81
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Size: 1.52 KB
Versions: 9
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Stored size: 1.52 KB
Contents
require 'open3' module Ddr module Derivatives class PtifGenerator < Generator def self.output_mime_type "image/tiff" end def self.output_extension "ptif" end def generate(source_path, output_path) case source_depth(source_path).strip when '16' Dir.mktmpdir do |dir| temp_8_bit_path = make_8_bit(dir, source_path) run_generator(temp_8_bit_path, output_path) end when '8' run_generator(source_path, output_path) else raise Ddr::Models::DerivativeGenerationFailure, "Unexpected depth -- #{source_depth} -- for source file #{Ddr::Utils.file_path(source_path)}" end end private def run_generator(source_to_use, output_path) command = "vips im_vips2tiff #{source_to_use} #{output_path}:#{options}" out, err, s = Open3.capture3(command) GeneratorResult.new(output_path, out, err, s) end def make_8_bit(tempdir, source_path) temp_8_bit_path = File.join(tempdir, "temp_8_bit.v") command = "vips im_msb #{source_path} #{temp_8_bit_path}" out, err, s = Open3.capture3(command) if s.success? return temp_8_bit_path else raise Ddr::Models::DerivativeGenerationFailure, "Error converting #{source_path} to 8-bit: #{err}" end end def source_depth(source_path) `identify -format '%[depth]' #{source_path}` end end end end
Version data entries
9 entries across 9 versions & 1 rubygems