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Add information about color chunks in docs/ase.txt

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David Capello 2015-02-17 10:21:36 -03:00
parent e85c63aa93
commit 3da835899d
1 changed files with 32 additions and 6 deletions
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38
docs/files/ase.txt
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@ -1,5 +1,5 @@
ASE Files (.ASE) Format description
Copyright (C) 2001-2014 by David Capello
Copyright (C) 2001-2015 by David Capello
----------------------------------------------------------------------
1. References
@ -38,10 +38,10 @@ PIXEL Pixel format:
The format is much like FLI/FLC files, but with different magic number
and differents chunks. Also, the color depth can be 8, 16 or 32 for
Indexed, Grayscale and RGB respectively, and the images are more easy
to read (there aren't differences with old frames). Color palettes
are in FLI color chunks (it could be type=11 or type=4). For color
depths more than 8bpp, palettes are optional. See fli.txt for details.
Indexed, Grayscale and RGB respectively, and images are compressed
images with zlib. Color palettes are in FLI color chunks (it could be
type=11 or type=4). For color depths more than 8bpp, palettes are
optional. See fli.txt for details.
To read the sprite, just do this:
* Read the ASE header (section 3)
@ -105,9 +105,35 @@ Then each chunk format is:
========================================
5. New chunk types
5. Chunk types
========================================
Palette chunk (0x0004)
----------------------------------------
WORD Number of packets
+ For each packet
BYTE Number of palette entries to skip from the last packet (start from 0)
BYTE Number of colors in the packet (0 means 256)
+ For each color in the packet
BYTE Red (0-255)
BYTE Green (0-255)
BYTE Blue (0-255)
Old palette chunk (0x0011)
----------------------------------------
WORD Number of packets
+ For each packet
BYTE Number of palette entries to skip from the last packet (start from 0)
BYTE Number of colors in the packet (0 means 256)
+ For each color in the packet
BYTE Red (0-63)
BYTE Green (0-63)
BYTE Blue (0-63)
Layer Chunk (0x2004)
----------------------------------------