CFAST Disney Animation Studio
From Just Solve the File Format Problem
Revision as of 00:16, 9 June 2017 by Dan Tobias
CFAST is an animated raster graphics format associated with the Disney Animation Studio application for Amiga computers.
4 bytes - signature 'GUCF', 'LOCK' or 'STDY' If the signature is 'LOCK' or 'STDY' then a copyright/description message follows 2 bytes string length n bytes string 'LOCK' means the file was meant to be saved as final/non editable Then follows the bitmap header 4 bytes - image width 4 bytes - image height 4 bytes - Amiga screen width (320=lores, 640=hires) 4 bytes - Amiga screen height (200/400, 256/512) 1 byte - number of bitplanes (1..5) (numColors = 2^bitplanes) Then follows palette information for the first two colors (if there are more colors, they are specified later in the file) 3 bytes - rgb for color index 0 3 bytes - rgb for color index 1 Then follows an extra block of data of varying length 1 byte - extralen n bytes (unknown contents) Then follows the number of frames 4 bytes - numFrames ... (TODO)