This is the specifications for the image file which is handled by the Game Extractor plugin Viewer_VOL_VOL_SPL_PPAL.

Endian Order:Little Endian
Compression:None
Encryption:None


This format is used by the following Games:
Red Baron 3D *.spl


This is the format specification information:
 
// IMAGE HEADER
  4 - Header (PPAL)
  4 - Image Length [+44]
  4 - Header (head)
  4 - Header Length (4)
  4 - Unknown (4)

// COLOR PALETTE
  4 - Header (data)
  4 - Color Palette Length (1024)

  // for each color
    1 - Red
    1 - Green
    1 - Blue
    1 - Alpha

// IMAGE DATA
  4 - Header (pspl)
  4 - Image Data Length (including next field)
  2 - Unknown (1029)

  // for each pixel
    1 - Palette Index

// PTPL DATA
  4 - Header (ptpl)
  4 - Data Length (including next field)
  4 - Unknown
  X - Unknown

// PCMT DATA
  4 - Header (pcmt)
  4 - Data Length (32)
  4 - Unknown
  4 - null
  20 - Unknown
  4 - Unknown


Game Extractor is able to read files of this type, as well as files from thousands of other games. To give it a try, download Game Extractor (Basic Version) for free, and see what it can do.

For further information on this format, refer to the source code on our GitHub repository.