gstreamer

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History

Tim-Philipp Müller cebfacd1fa jpegenc: don't ignore return value from _finish_frame() gst_video_encoder_finish_frame() will return FLOW_OK here if there's no output buffer.		2013-08-21 13:05:00 +01:00
..
gstjpeg.c
gstjpeg.h
gstjpegdec.c	ext: Use new flush vfunc of video codec base classes and remove reset implementations	2013-08-15 15:08:05 +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
gstsmokedec.c
gstsmokedec.h
gstsmokeenc.c
gstsmokeenc.h
Makefile.am
README
smokecodec.c
smokecodec.h
smokeformat.h

README

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