35 lines
861 B
Ruby
35 lines
861 B
Ruby
require 'bundler'
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Bundler::require
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require 'rmagick'
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include Magick
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IMAGE_DIR='video/128_128'
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OUTPUT_NAME='video/128_128/apple.bin'
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COLOR_STEP=(Magick::QuantumRange + 1) / 16
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def convert_image(filename)
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im = Image.read(filename)
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pix_ary = Array.new(8192, 0)
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im[0].each_pixel do |pix, col, row|
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if col.even? then # Low nibble
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pix_ary[row * 64 + col / 2] &= 0xF0
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pix_ary[row * 64 + col / 2] |= pix.intensity / COLOR_STEP
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else # High nibble
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pix_ary[row * 64 + col / 2] &= 0x0F
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pix_ary[row * 64 + col / 2] |= (pix.intensity / COLOR_STEP) << 4
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end
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end
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pix_ary
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end
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File.open(OUTPUT_NAME, "w+") do |f|
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Dir.glob("#{IMAGE_DIR}/*.bmp").each_with_index do |img, i|
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puts "#{i} image processed."
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f.write(convert_image(img).pack("C*"))
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end
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end
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