gstreamer/ext/jpeg
Tim-Philipp Müller 8305cb2995 meson: find libjpeg via pkg-config
This effectively (but optionally) requires libjpeg-turbo which
ships with a .pc file and is what pretty much everyone these days
uses anyway for libjpeg, so shouldn't be a problem hopefully.

https://bugzilla.gnome.org/show_bug.cgi?id=796947
2018-08-18 21:01:52 +01:00
..
gstjpeg.c Fix FSF address 2012-11-04 00:07:18 +00:00
gstjpeg.h Fix FSF address 2012-11-04 00:07:18 +00:00
gstjpegdec.c jpeg: Fixup frames without an EOI marker 2017-12-27 19:39:39 +01:00
gstjpegdec.h jpegdec: Use base class error handling function instead of replicating it here 2013-07-25 14:26:37 +02:00
gstjpegenc.c jpegenc: Accept sof-marker=4 2018-04-23 07:55:30 -03:00
gstjpegenc.h jpegenc: add snapshot property 2018-01-31 17:51:16 +00:00
gstsmokedec.c good: use new gst_element_class_add_static_pad_template() 2016-03-24 14:32:20 +02:00
gstsmokedec.h Fix FSF address 2012-11-04 00:07:18 +00:00
gstsmokeenc.c good: use new gst_element_class_add_static_pad_template() 2016-03-24 14:32:20 +02:00
gstsmokeenc.h Fix FSF address 2012-11-04 00:07:18 +00:00
Makefile.am Remove plugin specific static build option 2017-05-16 14:41:19 -04:00
meson.build meson: find libjpeg via pkg-config 2018-08-18 21:01:52 +01:00
README ext/jpeg/: Added a new simple jpeg based codec 2004-06-08 11:47:35 +00:00
smokecodec.c Fix FSF address 2012-11-04 00:07:18 +00:00
smokecodec.h Fix FSF address 2012-11-04 00:07:18 +00:00
smokeformat.h Fix FSF address 2012-11-04 00:07:18 +00:00

The Smoke Codec
---------------

This is a very simple compression algorithm I was toying with when doing a
Java based player. Decoding a JPEG in Java has acceptable speed so this codec
tries to exploit that feature. The algorithm first compares the last and the 
new image and finds all 16x16 blocks that have a squared difference bigger than
a configurable threshold. Then all these blocks are compressed into an NxM JPEG.
The quality of the JPEG is inversely proportional to the number of blocks, this
way, the picture quality degrades with heavy motion scenes but the bitrate stays
more or less constant.
Decoding decompresses the JPEG and then updates the old picture with the new
blocks.


TODO:
----
- make format extensible
- motion vectors
- do some real bitrate control