class StumpyPNG::PNG

Defined in:

stumpy_png/png.cr

Constant Summary

COLOR_TYPES = {0 => {:grayscale, {1, 2, 4, 8, 16}, 1}, 2 => {:rgb, {8, 16}, 3}, 3 => {:palette, {1, 2, 4, 8}, 1}, 4 => {:grayscale_alpha, {8, 16}, 2}, 6 => {:rgb_alpha, {8, 16}, 4}}

{ name, valid bit depths, "fields" per pixel }

INTERLACE_METHODS = {0 => :no_interlace, 1 => :adam7}

Constructors

Instance Method Summary

Constructor Detail

def self.new #

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Instance Method Detail

def bit_depth : UInt8 #

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def canvas : Canvas #

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def color_type : UInt8 #

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def compression_method : UInt8 #

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def data : Slice(UInt8) #

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def filter_method : UInt8 #

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def height : Int32 #

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def interlace_method : UInt8 #

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def palette : Array(StumpyCore::RGBA) #

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def parse_chunk(chunk) #

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def parse_IDAT(chunk : Chunk) #

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def parse_IEND(chunk : Chunk) #

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def parse_IHDR(chunk : Chunk) #

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def parse_PLTE(chunk : Chunk) #

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def parsed : Bool #

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def to_canvas_adam7 #

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def to_canvas_none #

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def width : Int32 #

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