Images are allocated without being initialized, so a reader must write
every pixel of every line. The IFF reader did not always:
- Maya: nothing checked that the tiles cover the image: areas no tile
covers are now opaque black.
- readStandardImage(), readCDIImage(), readRGFXImage() and
readDEEPImage() copied min(bytesPerLine, decoded line) bytes, and some
decoded lines are shorter than the image line:
- a PBM with 8 bitplanes and a 64 color CMAP was taken for HAM and
allocated as RGB888, while PBM data are one index per pixel: HAM is
no longer applied to PBM images;
- other mismatches (e.g. HAM without CMAP, RGB8 with 32 bitplanes, CD-i
CLUT3 or RGB888, a truncated CD-i line) are now an error: a decoded
line that does not cover the image line is refused.
Added the read test pbm_64colors.iff, which fails without this change.
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
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
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
Ana BobilloandMirco Miranda
Mirco Miranda
