Module png::chunk

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Expand description

Chunk types and functions

Structs

Constants

Image data

Image trailer

Image header

Palette

Animation control

Background colour

Source system’s pixel chromaticities

Frame control

Frame data

Source system’s gamma value

ICC profile chunk

UTF-8 textual data

Physical pixel dimensions

sRGB color space chunk

Latin-1 uncompressed textual data

Image last-modification time

Transparency

Latin-1 compressed textual data

Functions

Returns true if the chunk is critical.

Returns true if the chunk is private.

Checks whether the reserved bit of the chunk name is set. If it is set the chunk name is invalid.

Returns true if the chunk is safe to copy if unknown.