I have released the source code for the first version (0.1.9) of HALAC. This version uses ANS/FSE. It compiles seamlessly on platform-independent GCC, CLANG, and ICC. I have received and continue to receive many questions about the source code. I hope this proves useful.
HALIC's decode speed is already much faster compared to other codecs. When you look at the compression ratios, they are almost the same. There doesn't seem to be a problem with this. There are also issues where encode speed is especially important. But I think there is no need to spend a lot more energy to make a few percent more compression and decode it.
Storage is cheaper than it used to be. Bandwidth is also cheaper than it used to be (though not as cheap as storage). So high quality lossy techniques and lossless techniques can be adopted more than low quality lossy compression techniques.
Today, processor cores are not getting much faster. And energy is still not cheap. So in all my work, processing speed (energy consumption) is a much higher priority for me.
I don't really understand what the new PNG does better. Elements such as speed or compression ratio are not mentioned. Thanks also for your kind thoughts ksec.
Apart from the widespread support in codecs, there are 3 important elements: processing speed, compression ratio and memory usage. These are taken into account when making a decision (pareto limit). In other words, the fastest or the best compression maker alone does not matter. Otherwise, the situation can be interpreted as insufficient knowledge and experience about the subject.
HALIC is very good in lossless image compression in terms of speed/compression ratio. It also uses a comic amount of memory. No one mentioned whether this was necessary or not. However, low memory usage negatively affects both the processing speed and the compression ratio. You can see the real performance of HALIC only on large-sized(20 MPixel+) images(single and multi-thread). An example current test is below. During operations, HALIC uses only about 20 MB of memory, while JXL uses more than 1 GB of memory.
I had a very busy time with HALAC. Now I've given him a break, too. Maybe I can go back to HALIC, which I left unfinished, and do better. That is, more intense and/or faster. Or I can make it work much better in synthetic images. I can also add a mode that is near-lossless. But I don't know if it's worth the time I'm going to spend on it.