[mythtv-users] XvMC on Unichrome Pro (Via Nehemiah)

[Karl Hiramoto]

Hi all,

My main question how do i know XvMC is working, and how to debug if it is not?

Not described in the wiki:
http://www.mythtv.org/wiki/index.php/XvMC


My system is:
Via Nehemiah  1.3Ghz
Via Epia 13000  motherboard
Gentoo Linux running diskless over NFS
Xorg 7.0.0
openchrome drivers
Customized ebuild for mythtv to compile with  configure --enable-xvmc-pro

I in mythfrontend i did:
# Setup -> TV Settings -> Playback
# Next, change the "Preferred MPEG2 Decoder" to "Standard XvMC"
# Make sure "Extra audio buffering" is checked.


In mythfrontend when i watch TV i see:
0: start_time: 0.036 duration: 0.166
1: start_time: 0.029 duration: 0.140
stream: start_time: 0.321 duration: 1.920 bitrate=5999 kb/s
2006-02-22 13:20:26.117 AFD: Opened codec 0x8221390, id(MPEG2VIDEO)
type(Video)
2006-02-22 13:20:26.282 AFD: Opened codec 0x820e850, id(MP2) type(Audio)
2006-02-22 13:20:26.313 Opening audio device '/dev/dsp'.
2006-02-22 13:20:26.314 Opening OSS audio device '/dev/dsp'.
2006-02-22 13:20:28.628 TV: Changing from None to WatchingLiveTV
2006-02-22 13:20:28.637 Using realtime priority.
2006-02-22 13:20:28.663 Video timing method: DRM



In /var/log/Xorg.0.log i see:

(II) VIA: driver for VIA chipsets: CLE266, KM400/KN400, K8M800,
        PM800/PM880/CN400, VM800
(II) Primary Device is: PCI 01:00:0
(--) Chipset PM800/PM880/CN400 found
(!!) VIA Technologies does not support or endorse this driver in any way.
(!!) For support, please refer to http://www.openchrome.org/ or

<snip>

(II) VIA(0): direct rendering enabled
Fulfilled via DRI at 12587008
(II) VIA(0): Benchmarking video copy. Less is better.
(--) VIA(0): Timed   libc YUV420 copy... 6032947. Throughput: 131.1 MiB/s.
(--) VIA(0): Timed kernel YUV420 copy... 6008499. Throughput: 131.7 MiB/s.
(--) VIA(0): Timed    SSE YUV420 copy... 3618673. Throughput: 218.6 MiB/s.
(--) VIA(0): Timed    MMX YUV420 copy... 6266697. Throughput: 126.2 MiB/s.
(--) VIA(0): Ditch 3DNow! YUV420 copy... Not supported by CPU.
(--) VIA(0): Timed   MMX2 YUV420 copy... 3803600. Throughput: 208.0 MiB/s.
Freed 12587008 (pool 2)
(--) VIA(0): Using SSE YUV42X copy for video.
(II) VIA(0): [XvMC] Registering viaXvMCPro.
(II) VIA(0): [XvMC] Initialized XvMC extension.




I still have about 80% cpu usage while watching TV.


Thanks


---
Karl Hiramoto <karl at hiramoto.org>  http://karl.hiramoto.org/