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Nexoniarz 2ca726e3af YAPF v1: fast byte-aligned format, SIMD, tools and plugins 
Format (version 1, replaces the earlier experimental versions):
- per-tile YCoCg-R or subtract-green colour transform, 8-bit modular
- 12 row filters per 8-row band (Left, Gradient, Up-right, Up-average,
  Up 1-8 rows), none with more than a one-add serial dependency
- residuals in groups of 8 at the group's width (w bits x 8 = w bytes),
  4-bit control codes with repeat-previous-width runs chosen by DP
- constant and stored tiles, independent 64x64 tiles, mips, GPU hints
- all sizes validated before decoding; corrupt input is rejected

Library:
- SIMD on by default: SSSE3 (runtime CPUID check; GCC, Clang, MSVC,
  MinGW) and NEON on ARM64; -DYAPF_NO_SIMD for plain C
- yapf_load_memory, yapf_load_mt, yapf_load_memory_mt
- 6-10x faster decoding than PNG (stb_image) on one core; -O2 and -O3
  builds perform the same
- fixes for macOS (sysconf) and the Windows import library exports

Tools and integrations:
- `yapf` CLI: convert PNG/JPG/TGA/BMP/PSD/GIF <-> YAPF, info, bench,
  thumbnail, mips
- JavaScript and Python bindings (byte-identical to the C encoder)
- GIMP 3 plugin: exports the flattened image, optional mipmaps
- Blender extension: import (also as plane), export, drag and drop
- VS Code preview, Figma plugin, Photoshop scripts, Linux MIME type and
  thumbnailer
- Makefile, updated build.sh / build.bat, tools/build_release.sh
- tests/test_yapf.c (784 checks) and bindings/js/test.js

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-03 14:17:59 +02:00
..
install.sh YAPF v1: fast byte-aligned format, SIMD, tools and plugins 2026-10-03 14:17:59 +02:00
README.md YAPF v1: fast byte-aligned format, SIMD, tools and plugins 2026-10-03 14:17:59 +02:00
yapf-mime.xml YAPF v1: fast byte-aligned format, SIMD, tools and plugins 2026-10-03 14:17:59 +02:00
yapf.thumbnailer YAPF v1: fast byte-aligned format, SIMD, tools and plugins 2026-10-03 14:17:59 +02:00

README.md

Linux desktop integration

Makes file managers recognise .yapf files (MIME type image/x-yapf) and show thumbnails for them.

sh extensions/linux/install.sh             # for your user
sudo sh extensions/linux/install.sh --system

Thumbnails are made by yapf thumbnail (from the yapf tool, which must be on your PATH — sudo make install puts it in /usr/local/bin). They work in file managers that use freedesktop thumbnailers: GNOME Files (Nautilus), Nemo, Caja, and Thunar (with tumbler). KDE Dolphin uses its own plugin system and is not covered yet.