CN-Client: base and RV renderer fixes

Modified by: milkoreal.com
Date: 10:19:06
Project: Atlas

Synopsis: Base and RV Video rendering fixes

Overview:
The included change prevents starvation of the decoder on
low powered 
systems operating in threaded mode typically occuring when
PlayNow is 
used.  PlayNow starts playback with minimal buffer levels
counting on the 
system's ability to build the proper levels moments after
starting.  While 
typically network bandwidth is the constraint, on low
powered sytems, the 
CPU can be the constraint.  In threaded mode, the decoder
runs on a 
separate thread which on some system does not result in
sufficient 
processing granularity (due to round robin or even
deprioritized 
treatment).  Thus, explicit call to the decode is now issued
from data 
delivery threads whenever the post decode buffer is detected
to be empty.

In RealVideo, all video frames were treated as
non-skippable.  This 
resulted in all frames being displayed (or at least process
as if 
displayed).  This limited the ability of RealVideo rendering
to scale in 
cases of high CPU demand resulting eventually in more severe
artifacts than 
occasional frame dropping.

Files Modified:
/datatype/common/vidrend/vidrend.cpp
/datatype/common/vidrend/vidrendf.cpp
/datatype/common/vidrend/pub/vidrendf.h
/datatype/rm/video/renderer/rvxvdfmt.cpp
/datatype/rm/video/renderer/pub/rvxvdfmt.h

Image Size and Heap Use impact (Client -Only):
insignificant

Platforms and Profiles Affected:
all

Distribution Libraries Affected:
none

Distribution library impact and planned action:
n/a

Platforms and Profiles Build Verified:
win32-i386-vc7, helix-client-all-defines

Platforms and Profiles Functionality verified:
win32


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