module ChunkyPNG::Canvas::PNGEncoding

def encode_png_pixelstream(color_mode = ChunkyPNG::COLOR_TRUECOLOR, interlace = ChunkyPNG::INTERLACING_NONE)

Parameters:
  • The (String) -- PNG encoded canvas as string.
  • interlace (Integer) -- The interlacing method to use.
  • color_mode (Integer) -- The color mode to use for encoding. 
def encode_png_pixelstream(color_mode = ChunkyPNG::COLOR_TRUECOLOR, interlace = ChunkyPNG::INTERLACING_NONE)
  if color_mode == ChunkyPNG::COLOR_INDEXED && (encoding_palette.nil? || !encoding_palette.can_encode?)
    raise "This palette is not suitable for encoding!"
  end
  case interlace
    when ChunkyPNG::INTERLACING_NONE  then encode_png_image_without_interlacing(color_mode)
    when ChunkyPNG::INTERLACING_ADAM7 then encode_png_image_with_interlacing(color_mode)
    else raise "Unknown interlacing method!"
  end
end