Add more formats

[woollybah]

Since freeimage appears to be no longer receiving updates, it may be a good time to consider adding support for different image formats in separate modules, each using their own pixmap loader.

We may then want some generic pixmap manipulation stuff that the likes of freeimage provides.

What formats to add?

• [x] TIFF - http://www.libtiff.org/
• [x] Qoi - https://qoiformat.org/
• [x] WebP - https://github.com/webmproject/libwebp
• [x] RAW - https://github.com/LibRaw/LibRaw
• [x] GIF - https://github.com/nothings/stb
• [x] PNM - https://github.com/nothings/stb
• [x] PIC - https://github.com/nothings/stb
• [x] PCX - https://github.com/mackron/dr_pcx
• [x] SVG - https://github.com/memononen/nanosvg
• [x] IFF/ILBM - https://github.com/svanderburg/libilbm
• [ ] AVIF - https://github.com/AOMediaCodec/libavif
• [x] JPEG XL - https://github.com/libjxl/libjxl
• [x] JPEG 2000 - https://github.com/uclouvain/openjpeg
• [ ] ICNS - https://en.wikipedia.org/wiki/Apple_Icon_Image_format

...

[thareh]

HEIF would be nice! 😄

[woollybah]

@thareh It would. Unfortunately the "best" library appears to be libheif, which is LGPL, and would require a shared library for deployment with an application. Not the end of the world, but the libs would need to be pre-built and shipped in the module - for each platform/arch.

[woollybah]

AVIF loader is working nicely on arm/arm64. Unfortunately, it requires nasm on x86/x64, which I currently don't have a workaround for...

[woollybah]

I now have a working x64 build of the AVIF example on macOS. This requires enhanced support for custom assemblers on a per module/file basis, including the ability for the user to specify locations of the assembler - much in the same way as one can currently do with the C/C++ compilers, etc.