CD-I IFF IMAG

CD-I IFF IMAG refers to a raster graphics format associated with the CD-i CD format. It was designed by a group of CD-i developers, and is not part of the CD-i standard.

It uses the IFF container format.

Identification
Files start with ASCII "", and have "" at offset 8.

Specifications

 * OS-9/IFF Support Library

Initial reverse engineering (sample file 0000_FORM.IFF):

500x191 4 bit indexed color 252 byte wide lines (two padding bytes per line)

Color Palette

0: #B4A0A0 1: #A09090 2: #907878 3: #786060 4: #604848 5: #482D2D 6: #2D1010 7: #10BF9F 8: #5F6E5C 9: #373B66 A: #8F243F B: #59C040 C: #406E25 D: #254944 E: #415400 F: #00BC04

First Line Offset at 0x00000066 Second Line Offset at 0x00000162

Software

 * https://github.com/HoldcroftJ/os9_68k_sdk_v12/ → iff_imag.c
 * (limited support)

Sample files

 * https://telparia.com/fileFormatSamples/image/cdiIFFImage/