Module: BMP

Extended by:
BMP
Included in:
BMP
Defined in:
lib/bmp.rb,
lib/bmp/obj.rb,
lib/bmp/utils.rb,
lib/bmp/version.rb

Defined Under Namespace

Modules: Utils Classes: Obj

Constant Summary collapse

HEADER_SIZE = 
54
BITS_PER_PIXEL = 
32
VERSION = 
'0.1.1'

Instance Method Summary collapse

Instance Method Details

#new(input_filename) ⇒ BitStruct

Parameters:

  • input_filename (PNG) —

    including path

Returns:

  • (BitStruct) 


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# File 'lib/bmp.rb', line 32

def new(input_filename)
  img               = ChunkyPNG::Image.from_file(input_filename)
  img_hash          = BMP::Utils.parse_image(img)

  bmp               = BMP::Obj.new
  bmp.file_size     = img_hash[:file_size]
  bmp.image_size    = img_hash[:image_size]
  bmp.image_width   = img_hash[:image_width]
  bmp.image_height  = img_hash[:image_height]
  bmp.pixel_array   = img_hash[:pixel_array]

  bmp
end

#png_to_bmp(input_filename, output_filename) ⇒ void

This method returns an undefined value.

PNG to BMP

Parameters:

  • input_filename (String) —

    “/path/to/example.png”

  • output_filename (String) —

    “/path/to/example_generated.bmp”



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# File 'lib/bmp.rb', line 22

def png_to_bmp(input_filename, output_filename)
  bmp = BMP.new(input_filename)

  IO.write(output_filename, bmp)
end