Transparent jpeg animation (not spam/joke!)

[CosminC3]

Hi.

Well, I just created this account (just like a spammer/joker would do) so it definitely seems like a scam/joke...
Except it's not...


Basically it's just a container for the jpeg frames and their transparency (8 bit jpegs).
It uses a circular buffer to decompress just the frames about to be displayed.
This way it uses a lot less memory than, for example, a png animation.
Therefore it starts a lot faster.


The decompression of jpeg frames/transparency and the image resize functions are extremely fast (using MMX/SSE/AVX and multiple cores).
On my ancient computer (Intel CPU Pentium(R) dual core E6600 3.06 GHz, 4 GB DDR2 RAM) I can play a 720p animation with 50+ fps.


Some of you will say: it needs a lot of specialized code and therefore it cannot be used directly in browsers.
Well, if you need speed and quality when decompressing the jpeg frames and/or resizing them
ofcourse you'll need some specialized code for this...
Fortunately this code works superfast on a lot of currently used CPUs.


Most of the Delphi code is written by me.
I used some code from other programmers to enhance the speed.
Some of them are mentioned directly in text, some in About section.


Why I worked for about 2 years on this: just for fun.


So, if anybody wants to use this (or a part of it) in some projects/apps and/or wants to
improve it or just wanna play with it, feel free to do so.


Maker + Viewer binaries as installer: https://www.dropbox.com/s/cjyggplb1l...setup.zip?dl=0


Maker source code: https://www.dropbox.com/s/aof5kuv6u0...0code.zip?dl=0


Viewer source code: https://www.dropbox.com/s/ff736p69gv...rCode.zip?dl=0


Some cool ajpegs: https://drive.google.com/drive/folde...Jd?usp=sharing

[maadjordan]

JNG (related to PNG) done this before but never got chance

https://en.wikipedia.org/wiki/JPEG_Network_Graphics

[Jyrki Alakuijala]

JNG (related to PNG) done this before but never got chance

https://en.wikipedia.org/wiki/JPEG_Network_Graphics

If it is for internet use, you can currently do this with WebP. You may be able to do this with AVIF and JPEG XL soon.