gstreamer/ext/jpeg
Thiago Santos dcbba0932d jpegenc: sink pad's getcaps shouldn't use the src pad getcaps
Instead of using get_allowed_caps on the srcpad, the sinkpad getcaps
should use the getcaps of the srcpad's peer. This way the srcpad
can keep using fixed_caps and sinkpad getcaps exposes all caps
that can be negotiated

https://bugzilla.gnome.org/show_bug.cgi?id=637686
2010-12-21 15:23:11 -03:00
..
gstjpeg.c Add -Wmissing-declarations -Wmissing-prototypes warning flags 2010-03-17 18:23:28 +01:00
gstjpeg.h Add -Wredundant-decls warning flag 2010-03-17 19:35:10 +01:00
gstjpegdec.c jpegdec: add "max-errors" property to ignore decoding errors 2010-12-11 20:36:45 +00:00
gstjpegdec.h jpegdec: add "max-errors" property to ignore decoding errors 2010-12-11 20:36:45 +00:00
gstjpegenc.c jpegenc: sink pad's getcaps shouldn't use the src pad getcaps 2010-12-21 15:23:11 -03:00
gstjpegenc.h jpegenc: support more colour spaces and some cleanups 2010-04-30 17:49:09 +02:00
gstsmokedec.c gst_element_class_set_details => gst_element_class_set_details_simple 2010-03-18 14:32:00 +01:00
gstsmokedec.h
gstsmokeenc.c various (ext): add a missing G_PARAM_STATIC_STRINGS flags 2010-10-13 17:39:36 +03:00
gstsmokeenc.h
Makefile.am jpeg: Explicitely link with libgstbase 2010-06-27 06:39:14 +02:00
README
smokecodec.c smokeenc: don't crash when compiled against libjpeg7 2009-08-17 17:08:45 +01:00
smokecodec.h
smokeformat.h

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