[MPlayer-dev-eng] Documentation: video.html patch

Nick Kurshev nickols_k at mail.ru
Sun Oct 14 17:28:08 CEST 2001


Hello!

As I've found not every debeloper have write access to main/DOCS subfolder.
In this connection - I've done patch for video.html file.
Please apply!

Best regards! Nick

--- video.html.old	Mon Oct  8 08:48:19 2001
+++ video.html	Sun Oct 14 19:25:09 2001
@@ -195,6 +195,46 @@
 
 <LI>Radeon VE - currently only XFree86 CVS has driver for this card, version
 4.1.0 doesn't. No TV-out support.</LI>
+<br>
+<br><b>A few word about ATI's TV-out:</b>
+<br>Currently ATI don't want support any its TV-out chips under Linux.
+<br>Below is official answer from ATI Inc.:
+<br>
+<code>
+<i>
+<br>>Hello!
+<br>>
+<br>>On your pages you wrote that you support linux developers.
+<br>>Currently I participate with mplayer project (www.mplayerhq.hu)
+<br>>I'm interesting with enabling TV-out on Radeon VE chips during
+<br>>movie playback. I would be glad to add this feature to radeonfb driver
+<br>>(which can be found in CVS tree of mplayer project at main/drivers/radeon).
+<br>>Do I have a chance to get any official technical documenation?
+</i>
+<br>We will not provide TV out related documents due to macrovision concerns.
+<br>Also mpeg2 decoding is something that we MAY consider in the future but not
+<br>at this current time. This is again due to proprietary and 3rd party
+<br>information.
+</code>
+<br>
+<br>Badly isn't?
+<br><code>
+<br>Q:What is macrovision postprocessing?
+<br>A:It's copy protection mechanism.</code>
+<br><br>It's mean that if they'll open any TV-out related information then
+hackers will be able to disable copy protection on their chips. Therefore
+we have no chances to get workable ATI's tv-out. (At least in supported by ATI
+project: XFree86).
+<br>
+<br>What's status of ATI's tv-out chips under Linux:
+<br><b>ATI Mach64</b> has <i>ImpacTV</i> which is supported by gatos.
+<br><b>ASIC Radeon VIVO</b> has <i>Rage Theatre</i> which is supported by gatos.
+<br><b>Radeon VE</b> and <b>Rage PRO LT</b> have <i>ImpacTV2+</i> which is not supported under Linux.
+<br><br>From other side - we could have a chance to have TV-out support through
+<b>VESA drivers</b> on x86 systems but since Linux has too limited <i>vm86 syscall</i>
+- it's unreachable on practice. Finely every access to IO space causes exception
+and driver attempts to emulate even VESA calls instead passing them to native
+int_10h handler.
 </P>
 
 



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