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[Feature Request] Zstandard support for zip archives and CHDs #1613
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fbneo doesn't support chd at all. |
@crashGG Sorry for the late answer, it seems i totally overlooked this issue. |
In addition to mame, many emulators have recently added zstd decoding support. This seems to be a trend. |
A few weeks ago, i've seen the maintainer of the mame libretro core complaining about that stuff, he couldn't build it with the standard libretro buildbot because it was apparently too outdated. Is any of those emulators you are talking about available on winxp, 3ds, psvita, wiiu, ps3, ... ? |
Maybe could consider trying to add for libretro port, which runs more on modern computer and operating systems |
Igor Pavlov has written his own zstandard decoder for 7-zip for the reason of supporting old compilers (7-zip itself is compiled with VS2005) |
In a recent update, mame added zstd encoding/decoding support for zip and chd.
mamedev/mame@05e69b4
The compression rate of zstd is between deflate/zlib and lzma,but decompression speed is faster ,somtimes even than direct copying
https://mcmilk.de/projects/7-Zip-zstd/dl/compr-v120.png
https://mcmilk.de/projects/7-Zip-zstd/dl/decomp-v120.png
Fast decompression means efficiency and low CPU overhead. This benefits all players and low-end devices.
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