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Module chunk

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Expand description

Chunk types and functions

Structs§

Constants§

  • IDAT
    Image data
  • IEND
    Image trailer
  • IHDR
    Image header
  • PLTE
    Palette
  • acTL
    Animation control
  • bKGD
    Background colour
  • cHRM
    Source system’s pixel chromaticities
  • fcTL
    Frame control
  • fdAT
    Frame data
  • gAMA
    Source system’s gamma value
  • iCCP
    ICC profile chunk
  • iTXt
    UTF-8 textual data
  • pHYs
    Physical pixel dimensions
  • sRGB
    sRGB color space chunk
  • tEXt
    Latin-1 uncompressed textual data
  • tIME
    Image last-modification time
  • tRNS
    Transparency
  • zTXt
    Latin-1 compressed textual data

Functions§

  • is_critical
    Returns true if the chunk is critical.
  • is_private
    Returns true if the chunk is private.
  • reserved_set
    Checks whether the reserved bit of the chunk name is set. If it is set the chunk name is invalid.
  • safe_to_copy
    Returns true if the chunk is safe to copy if unknown.