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format.md

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File format

  • Magic: 7 bytes, HiColor.
  • Version: 1 byte, 5 for 15-bit color, 6 for 16-bit color. Other versions may be added later.
  • Width: 2 bytes: WB1, WB2. Width = WB1 + 256×WB2.
  • Height: 2 bytes: HB1, HB2. Height = HB1 + 256×HB2.
  • Data: Width×Height×2 bytes. The Data consist of Width×Height Values. Each Value is 2 bytes: VB1, VB2. Value = VB1 + 256×VB2.

The Data part encodes the lines of pixels comprising the image from top to bottom and each line from left to right. The first Value of the data is the top-left pixel, the next is the one to its right, etc.

Values

  • Version 5:
    • 5 bits red, 5 bits green, 5 bits blue, 0.
  • Version 6:
    • 5 bits red, 6 bits green, 5 bits blue.