fpnge
fdeflate
| fpnge | fdeflate | |
|---|---|---|
| 4 | 1 | |
| 79 | 10 | |
| - | - | |
| 4.2 | 6.9 | |
| 2 months ago | 2 months ago | |
| C++ | Rust | |
| Apache License 2.0 | Apache License 2.0 |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
fpnge
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png crate gets an ultrafast compression mode, up to 4x faster decompression
When the QOI format was first announced it wasn't clear that was even possible while keeping PNG format compatibility. But the fpng and fpnge C/C++ libraries showed it was, and today you can take advantage of those advances in a general purpose PNG library in Rust!
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Hello, PNG
But most platforms these days have some form of CRC32 "acceleration". Adler32 is easy to compute so I'm even less concerned there.
I spent a bunch of time optimising the code in [fpnge](https://github.com/veluca93/fpnge), which is [often notably faster than fpng](https://github.com/nigeltao/qoir/blob/5671f584dcf84ddb71e28d...), yet checksum time is basically negligible.
Having said that, the double-checksum aspect of PNG does feel unnecessary.
- Computing Adler32 Checksums at 41 GB/s
- QOI – The Quite OK Image Format
fdeflate
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png crate gets an ultrafast compression mode, up to 4x faster decompression
The changes have been tested for regressions on 80,000 images, and the new Zlib implementation has been roundtrip-fuzzed to ensure correctness. The png crate as a whole also added roundtrip fuzzing. So we're quite confident in the correctness of these changes, but if you find anything amiss, please open an issue on Github.
What are some alternatives?
fpng - Super fast C++ .PNG writer/reader
resvg - An SVG rendering library.
zpaqlpy - Compiles a zpaqlpy source file (a Python-subset) to a ZPAQ configuration file for usage with zpaqd
image-png - PNG decoding and encoding library in pure Rust
php-qoi - QOI image encoder and decoder written in pure PHP
canvas_ity - A tiny, single-header <canvas>-like 2D rasterizer for C++
tinf - Tiny inflate library (inflate, gzip, zlib)
figlet-fonts - my collection of figlet / toilet ascii art fonts
zlib-ng - zlib replacement with optimizations for "next generation" systems.
libjxl - JPEG XL image format reference implementation
stb - stb single-file public domain libraries for C/C++
libpng - LIBPNG: Portable Network Graphics support, official libpng repository