Commit Graph

7 Commits

Author SHA1 Message Date
463da81fad IFF: support for PCHG chunk
Highlights:
- Adds support for a new palette changer chunk. Some test cases attached to #38 .
- Fixes the reading of ILBMs with the mask (test case: [cyclone.iff](/uploads/d8734d2155fd0d21f7b003b37e0d1259/cyclone.iff)).
- Adds support for HAM5 encoding.
- Adds more test cases created using [HAM Converter](http://mrsebe.bplaced.net/blog/wordpress/).
- Adds support for Atari STE RAST chunk outside FORM one (test case: [fish.iff](/uploads/c461cf4b6a1423cec60fbce645d9fd07/fish.iff)).

NOTE: I contacted Sebastiano Vigna, the author of the PCHG chunk specifications, and he provided me with:
- Some images to test the code (but I can't include them in the test cases).
- Permission to use [his code](https://vigna.di.unimi.it/amiga/PCHGLib.zip) without restrictions: Huffman decompression was achieved by converting `FastDecomp.a` via AI.

Closes #38
2025-09-08 15:39:50 +00:00
480ea8dba0 IFF: add support for RGBN/RGB8 image data and CAT chunk
Add the following features:
- RGB8 image data support (test case added)
- RGBN image data support ([Clouds.iff](/uploads/9db869350f74421bf1813fa7d4332f4f/Clouds.iff))
- CAT chunk support: you can have more than one image for file (test case added)
- Image transformation support via EXIF data

[RGBN/RGB8](https://wiki.amigaos.net/wiki/RGBN_and_RGB8_IFF_Image_Data) files are used in Impulse's Turbo Silver and Imagine.

Closes #34
2025-08-07 20:17:09 +00:00
37e3c65a05 ILBM 64-bit extension support 2025-08-04 13:47:00 +02:00
c2a1d4b401 IFF: Fix halfbride detection, 1-bitplane colors and PBM line size calculation. It also ignore ZBuffer flag on Maya images (like Photoshop does) amd adds CMYK palette support. 2025-08-01 15:29:52 +02:00
fd864e6f55 IFF: add support for uncompressed ACBM type 2025-07-24 07:37:58 +02:00
0a9f9fe106 IFF: support for Ham8, HalfBride, Pbm and ILBM 32-bits modes 2025-07-15 07:38:19 +02:00
4f2f2425d3 IFF: read only support to Interchange Format Files
Read-only support for most common Interchange Format Files (IFF). Supports IFF saved by Photoshop for the Amiga and Maya platform and HAM6 coded files.

Closes #29
2025-07-01 21:59:03 +00:00