[FFmpeg-cvslog] r11880 - trunk/doc/snow.txt
melanson
subversion
Fri Feb 8 20:17:47 CET 2008
Author: melanson
Date: Fri Feb 8 20:17:46 2008
New Revision: 11880
Log:
Use a consistent capitalization for 'Snow' as discussed on the list
Modified:
trunk/doc/snow.txt
Modified: trunk/doc/snow.txt
==============================================================================
--- trunk/doc/snow.txt (original)
+++ trunk/doc/snow.txt Fri Feb 8 20:17:46 2008
@@ -1,18 +1,18 @@
=============================================
-SNOW Video Codec Specification Draft 20080110
+Snow Video Codec Specification Draft 20080110
=============================================
Introduction:
=============
-This specification describes the SNOW bitstream syntax and semantics as
-well as the formal SNOW decoding process.
+This specification describes the Snow bitstream syntax and semantics as
+well as the formal Snow decoding process.
The decoding process is described precisely and any compliant decoder
-MUST produce the exact same output for a spec-conformant SNOW stream.
+MUST produce the exact same output for a spec-conformant Snow stream.
For encoding, though, any process which generates a stream compliant to
the syntactical and semantic requirements and which is decodable by
the process described in this spec shall be considered a conformant
-SNOW encoder.
+Snow encoder.
Definitions:
============
@@ -315,7 +315,7 @@ Binary Range Coder:
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 symbols encoded by the snow range coder are bits (0|1). The
+The symbols encoded by the Snow range coder are bits (0|1). The
associated probabilities are not fix but change depending on the symbol mix
seen so far.
@@ -486,7 +486,7 @@ the remaining points shall be bilinearly
up to 4 surrounding halfpel and fullpel points, again rounding should be to
nearest and halfway values rounded up
-compliant snow decoders MUST support 1-1/8 pel luma and 1/2-1/16 pel chroma
+compliant Snow decoders MUST support 1-1/8 pel luma and 1/2-1/16 pel chroma
interpolation at least
@@ -562,7 +562,7 @@ s[w ] shall be considered equivalent to
| + | + | + | + +1/2
-snows 9/7 Integer filter:
+Snow's 9/7 Integer filter:
1. s[i] -= (3*(s[i-1] + s[i+1]) + 4)>>3; for all even i < w
2. s[i] -= s[i-1] + s[i+1] ; for all odd i < w
3. s[i] += ( s[i-1] + s[i+1] + 4*s[i] + 8)>>4; for all even i < w
More information about the ffmpeg-cvslog
mailing list