releasenotes_exolvidvbi.txt

pnx1500 video test demo

Release notes for MPTK1500 application apps/exolVidVbi
=====================================================
Release Date: December 2nd, 2004


Version
=======
ApplicationName: <exolVidVbi>
ApplicationVersion: 0.3

Note: this application has not yet been approved



Summary
=======
This example program demonstrates the use of Vbi in VrendGfxVo and VcapVip2.


Reference to build_exe command line

build_exe apps/exolVidVbi 


History
=======
(From release notes for exolVideo) Once upon a time, there was a tmVrendGfxVo on Viper. Now this is reborn in the 
tmVrendGfxVo for pnx1500

Known problems
==============

The application is fairly limited and once it is set up for one 
standard (i.e. NTSC), it cannot be re-configured for another.
In order to display another standard, you must stop and re-start the application.

There is no VBI 'A/V sync' implemented which means that the pin can run out of packets 
at the start for a while until things start getting in stride. The reason for this is 
that at startup the VIP floods the pin with full packets (it gets started first) and the 
renderer never catches up so data is missed. For the moment I have increased the number 
of packets on the pin but the correct solution is to drop the out of date packets and 
not try and play them (VBI version of AV Sync). A/V sync is not implemented in MPTK 
and so when the video A/V sync gets implemented - the VBI sync will also need to be implemented.
( Please note : I have increased the number of packets so this problem is not currently seen,
 the number of packets should be decreased when VBI 'A/V Sync' is implemented in MPTK)


Differences (solved bugs and added functionality) with the previous release
===========================================================================
The digital CC data to be inserted has been moved to a separate file. In the previous release
the CC data was inserted from an array defined within the code. The capability of the example has been
changed to read the CC data from a file.  

(new) The application has been changed to allow the user to dynamically choose and switch between 
analogue and digital (re)insertion. In the previous version when a particular option was chosen 
(e.g. digital insertion) the application needed to be stopped and re-started in order to choose another 
(e.g. analogue re-insertion). This (thankfully) is no longer the case.

Missing functionality 
=====================
None. (Yet). This is just an example of how to capture/insert/reinsert VBI.

Additional functionality wrt FRS 
================================


Not tested features
===================


Test environment
================
board: Nref / LCP1500
Host PC: Win2000