[xine-devel] vidix & HDTV

[Reinhard N. <rn...@gm...>]

Hi,

James Stembridge wrote:

> What resolution is this stream? I think the problem may be well be down
> to the limits of the hardware scalers on graphics cards. If you can
> supply a reasonably small sample (unfortunately I'm still waiting for
> adsl to be installed) then I will do my best to make it work with the
> vidix driver, or at least stop it from segfaulting.

I've been looking at this issue today and here are my results:

The vidix mga driver wants to buffer 3 frames at 1920x1088 and this seems to 
be too much for the detected 16 MB, as the X server is running at 1280x1024x24.

When I reduce the number of frames to 2, I get a picture, but it jumps. When I 
stay with 3 frames, but hardcode a gfx mem size of 32 MB, I get a smoothly 
running picture.

But the picture still wraps, but in a way, I cannot describe that easily. I 
took a photo shot of the screen, so maybe you have can get an idea, what's 
going wrong here.

	http://home.vr-web.de/~rnissl/jewelry1-1.jpg

This is, how it should look like:

	http://home.vr-web.de/~rnissl/jewelry1-1.png

How can I assist you any further?

Can you point me to any documentation about the back end scaler?

BTW: this is what lspci -vvv gives me:

01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G550 AGP (rev 01) 
(prog-if 00 [VGA])
         Subsystem: Matrox Graphics, Inc. Millennium G550 Dual Head DDR 32Mb
         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B-
         Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
         Latency: 128 (4000ns min, 8000ns max), cache line size 08
         Interrupt: pin A routed to IRQ 16
         Region 0: Memory at f8000000 (32-bit, prefetchable) [size=32M]
         Region 1: Memory at e8100000 (32-bit, non-prefetchable) [size=16K]
         Region 2: Memory at e8800000 (32-bit, non-prefetchable) [size=8M]
         Expansion ROM at <unassigned> [disabled] [size=128K]
         Capabilities: [dc] Power Management version 2
                 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                 Status: D0 PME-Enable- DSel=0 DScale=0 PME-
         Capabilities: [f0] AGP version 2.0
                 Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 
64bit- FW- AGP3- Rate=x1,x2,x4
                 Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x1

Bye.
-- 
Dipl.-Inform. (FH) Reinhard Nissl
mailto:rn...@gm...