CD-I IFF IMAG

File Format
Name	CD-I IFF IMAG
Ontology	Electronic File Formats Graphics CD-I IFF IMAG
Released	~1989

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 "FORM", and have "IMAGIHDR" 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
• Deark (limited support)

Sample files

• dexvert samples — image/cdiIFFImage