gstreamer/ext/jpeg
Matthieu Bouron e5c443594f jpegdec: Relax sink caps
Since jpegdec already parse the jpeg stream, the sink caps could be
relaxed. This will allow jpegdec to be selected in more case and in
particular when the jpeg typefinder does not find the width and height.

https://bugzilla.gnome.org/show_bug.cgi?id=709352
2013-10-04 10:33:13 +02:00
..
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 jpegdec: Relax sink caps 2013-10-04 10:33:13 +02:00
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: don't ignore return value from _finish_frame() 2013-08-21 13:05:00 +01:00
gstjpegenc.h jpegenc: Put the SOF marker into the caps 2013-02-13 12:32:10 +01:00
gstsmokedec.c Fix FSF address 2012-11-04 00:07:18 +00:00
gstsmokedec.h Fix FSF address 2012-11-04 00:07:18 +00:00
gstsmokeenc.c Fix FSF address 2012-11-04 00:07:18 +00:00
gstsmokeenc.h Fix FSF address 2012-11-04 00:07:18 +00:00
Makefile.am gst: Add better support for static plugins 2013-04-15 15:54:11 +02:00
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