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authorlars.taeuber@web.de <lars.taeuber@web.de>2008-01-04 17:44:42 +0000
committerMichael Niedermayer <michaelni@gmx.at>2008-01-04 17:44:42 +0000
commite5635270d30097dffe8f33ddf93a8ddd15d12802 (patch)
treed7425d031347249ec6ccaa5a76030976b3d7fae8 /doc
parent68e7d4427665fb196f5563ab4053b1ef585ae49c (diff)
downloadffmpeg-e5635270d30097dffe8f33ddf93a8ddd15d12802.tar.gz
A few lines of text about the range coder, part of a patch by lars punkt taeuber ät web punkt de.
Originally committed as revision 11397 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'doc')
-rw-r--r--doc/snow.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/snow.txt b/doc/snow.txt
index eaf34079b5..694da6f075 100644
--- a/doc/snow.txt
+++ b/doc/snow.txt
@@ -309,6 +309,13 @@ Decoding process:
Range Coder:
============
FIXME
+The implemented range coder is an adapted version based upon "Range encoding:
+an algorithm for removing redundancy from a digitised message." by G. N. N.
+Martin.
+The encoded symbols encoded by the ffmpeg range coder are bits (0|1). The
+associated probabilities are not fix but change depending on the symbol mix
+seen so far.
+
Neighboring Blocks:
===================