AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2021.05.02 00:36 "[Tiff] SIMD optimizations", by Larry Bank
2021.05.02 09:48 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.02 10:33 "Re: [Tiff] SIMD optimizations", by ZdPo Ster
2021.05.02 13:55 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn
2021.05.02 14:09 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.02 15:35 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.02 17:20 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.02 17:45 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.03 15:58 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.03 17:28 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.03 17:32 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.03 19:16 "Re: [Tiff] SIMD optimizations", by Jeff Breidenbach
2021.05.03 20:40 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn
2021.05.03 21:09 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.03 21:45 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn
2021.05.03 22:08 "Re: [Tiff] SIMD optimizations", by Even Rouault
2021.05.04 07:44 "Re: [Tiff] SIMD optimizations", by Roger Leigh
2021.05.04 07:50 "Re: [Tiff] SIMD optimizations", by Roger Leigh
2021.06.06 21:15 "Re: [Tiff] SIMD optimizations", by Roger Leigh
2021.05.03 21:44 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.03 21:55 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn
2021.05.03 22:50 "Re: [Tiff] SIMD optimizations", by Akira Urushibata
2021.05.04 17:34 "Re: [Tiff] SIMD optimizations", by Steve Underwood
2021.05.04 17:44 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.04 18:07 "Re: [Tiff] SIMD optimizations", by Toby Thain
2021.05.04 20:59 "Re: [Tiff] SIMD optimizations", by Michael Shiels
2021.05.04 21:02 "Re: [Tiff] SIMD optimizations", by Larry Bank
2021.05.05 01:14 "Re: [Tiff] SIMD optimizations", by Steve Underwood

2021.05.03 21:55 "Re: [Tiff] SIMD optimizations", by Bob Friesenhahn

It was probably me who reported my improved CCITT G4 compressor years ago. I gave up trying to earn money from licensing my code and have been turning it into open source projects for the last few years.

You may have reported it, but my recollection was not of you. :-)

There's nothing specific to the Apple M1 in my improvements to libtiff - they will run on any Arm CPU.

My level of interest in optimizing this code is directly related to the level of interest of the consumers/users. If no one cares about more speed, then I'm not going to bother investing time in it. I'm humble enough to

Rest assured that most libtiff users do care about speed. One reason for using TIFF is that it offers the potential for considerable speed compared with other formats. TIFF offers the potential for close to maximum speed while also offering the options of considerable compression and storage organization. TIFF (and libtiff) offers much more flexibility to solve specific problems than most other formats.

Bob

Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
Public Key, http://www.simplesystems.org/users/bfriesen/public-key.txt