topic Re: ippsEncodeLZ77/ippsDecodeLZ77 function replacements? in Intel® Integrated Performance Primitives

ippsEncodeLZ77/ippsDecodeLZ77 function replacements?

dfati1 — Wed, 22 Jan 2025 10:02:22 GMT

Hello,

There is an app using older functions which no longer exist. Is there a guide on what the new function to use are and stay compatible with existing compressed data? Also, there used to be a generic interface gen_ from the mx libraries, is there no need to have those anymore?

Here's the function list:

ippsEncodeLZ77SetStatus_8u(a,b)
ippsEncodeLZ77GetPairs_8u(a,b,c,d)
ippsEncodeLZ77_8u(a,b,c,d,e,f)
ippsEncodeLZ77DynamicHuff_8u(a,b,c,d,e,f)
ippsEncodeLZ77Reset_8u(a)
ippsDecodeLZ77SetStatus_8u(a,b)
ippsDecodeLZ77GetPairs_8u(a,b,c,d)
ippsDecodeLZ77DynamicHuff_8u(a,b,c,d,e,f)
ippsDecodeLZ77_8u(a,b,c,d,e,f)
ippsDecodeLZ77Reset_8u(a)
ippsEncodeLZ77InitAlloc_8u(a,b,c)
ippsDecodeLZ77InitAlloc_8u(a,b)
ippsDecodeLZ77SetPairs_8u(a,b,c,d)
ippsLZ77Free_8u(a)
ippsMalloc_8u(a)
ippsFree(a)

Re: ippsEncodeLZ77/ippsDecodeLZ77 function replacements?

Ruqiu_C_Intel — Thu, 23 Jan 2025 02:33:32 GMT

The ippsEncodeLZ77/ippsDecodeLZ77functions were removed from IPP 9.0 as we didn't receive too much request for these functions. It was happen almost 10 years ago, please check the removed functions list here: https://www.intel.com/content/www/us/en/docs/ipp/developer-guide-reference/2022-0/appendix-b-removed-functions-for-signal-processing.html

Kindly noted that the older version does not include optimizations for newer CPU instructions, which means it may not be delivering the best possible performance for your system.

Additionally, using such an outdated version poses certain security risks, as newer updates typically address vulnerabilities that have been identified over time.

For both improved performance and enhanced security, we strongly recommend upgrading to the latest version of the product.

Re: ippsEncodeLZ77/ippsDecodeLZ77 function replacements?

dfati1 — Mon, 27 Jan 2025 07:28:13 GMT

How would you use the new functions to inflate the data Encoded with those functions? If you can't get the data back, the new version is worthless.