Re: [Xpert]Using Xv to display odd/even fields from a TV camera
On Fri, 10 May 2002, Paul Robertson wrote: I have some software which uses Xv to render images acquired from a TV camera in something like realtime. Currently we only capture even fields, and we scale the image vertically by 200%. It looks OK. Now we need to start working with both odd and even fields. If we do that with our current software, the picture wobbles up and down. If I write some code to adjust the position of the odd field, the picture still looks wrong, particularly if nothing is moving in the picture. If I write code to reconstitute a full frame by interlacing the odd and even fields, then I see nasty artefacts when there is horizontal motion in front of the camera. We actually use ATI Rage and the r128 driver at the moment, but a while ago we evaluated the i815 graphics controller. I remember that it supported a number of different hardware scaling methods including Up interpolation and Down interpolation, and I wondered if I could use these modes to get a better quality picture. ATI hardware does support this but the driver does not do this (yet?). What software do you want to use this with ? Is the source available for download ? Vladimir Dergachev Its closed source commercial stuff I'm afraid. It looks like this topic has been the subject of quite some discussion in the past before momentum was lost. I'll try to stay in the loop this time in case there is anything I can do to help move things along. -- Paul ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
Re: [Xpert]Using Xv to display odd/even fields from a TV camera
Can I butt in with some basic questions? I'd just like to understand what kinds of applications will benefit from this proposal. We have lots of DVD players, the ubiquitous Brooktree framegrabber, and esoteric stuff like my ADV601. I know for sure it would help me. The Bt chips normally produce 25/30 interlaced frames/sec which might look lousy when displayed if there is horizontal motion. They can be programmed to decimate the frame, so you would only see say 25/30 even fields/sec Can they also be programmed to deliver 50/60 fields/sec? Does v4l support all this? Do v4l apps usually have the Bt chip writing the YUV image directly into video memory? Would Xv, or the graphics driver support odd/even fields in this case? DVD players I know nothing about. What do they do? -- Paul - Original Message - From: Mark Vojkovich [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, May 10, 2002 11:34 PM Subject: Re: [Xpert]Using Xv to display odd/even fields from a TV camera On Fri, 10 May 2002, Billy Biggs wrote: The delay stuff is less important than the field flag. Mark Vojkovich ([EMAIL PROTECTED]): I'd like an XV_FIELD (or better named) attribute that indicates the next PutImage request should upload and display the field rather than the frame which is the default. 0 is top, 1 is bottom, per mpeg conventions. It's a one-shot state that gets reset to frame after the next PutImage happens. How does this work for full 50 or 59.94fps video? Do I upload the same frame twice, or does this attribute just mean: only copy from the source frame the even/odd field, so that the whole frame isn't coped twice, only half of it? It means that only the field is copied and only the field is displayed. I'm also worried about switching from frame-mode to field-mode. In my DVD player for example, I'll switch between 3:2 pulldown correction in software, or, if I lose the phase, go back to 60fps output. Do you think video cards are going to have a problem switching the scaling width/height without artifacts? NVIDIA cards won't have a problem with this. I think some cheaper cards that don't double buffer their registers and have to be programmed during the retrace won't be able to do this very well. Mark. ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
[Xpert]Dualheading
Hello, I have searched thru xfree.org but found nothting about dualheading a X11 system. Where can I find such guide? If it is just some simple changes in the XF86Config file that needs to be made, what file should I edit XF86Config or XF86Config-4 I have them both. -- Best regards, Per Edin! Sweden, Europe Maintainer and Developer @ the KStorm project. http://kstorm.sourceforge.net ICQ: 151399739 ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
[Xpert]PPC
I've recently compiled xfree 4.2 on ppc and was rather surprised that nvidia
driver didn't compile. Could someone give me a list of all drivers that
should compile on ppc (and if they should have dri enabled)?
--
Kady czowiek, ktry naprawd yje, nie ma charakteru, nie moe go mie.
Charakter jest zawsze martwy, otacza ci zgnia struktura przeniesiona z
przeszoci. Jeeli dziaasz zgodnie z charakterem wtedy nie dziaasz w ogle
- jedynie mechanicznie reagujesz. { Osho }
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[Xpert]Heavy problem with very recent hardware (KT333, GeForce4Ti)
Hi all, Here is the configuration of the machine. (we have many machine exactly like this one, and the bug is reproduced on two of them, others haven't been tested) - Motherboard : MSI KT333 - 1 Go of RAM (DDR 266) - Athlon 1700+ (1467 Mhz) - MSI GeForce4Ti 4400 128Mo DDR - Mandrake 8.2 distribution - nvidia 2880 drivers. After a while, the Xserver hangs/crashes. sometimes I can go back to a console, but the login program hangs too. - reboot. When an OpenGL application is running, the crash appears more quickly. the debugguer tells that the segfault comes from a function ?? called from nvidia's driver. (__nv09937() in libGLcore.so) I spent this week trying to hunt the bug with the help of an Nvidia developper. Without success. Since Xserver also crashes without openGL apps running. I believe this comes from the XFree86 w/ GeForce4Ti. (which is not in the supported list of videocards). passing mem=nopentium ti the linux kernel does not solve the problem. Attached is the XFree86.0.log file from /var/log Any help or idea to solve the problem would be greatly appreciated ! Perhaps this may come from the mandrake 8.2 distribution. Thanks, -- Samuel Hornus iMAGIS, laboratoire GRAVIR/IMAG (CNRS,INRIA,INPG,UJF) tel 04 76 61 54 52-mail [EMAIL PROTECTED] XFree86 Version 4.2.0 / X Window System (protocol Version 11, revision 0, vendor release 6600) Release Date: 23 January 2002 If the server is older than 6-12 months, or if your card is newer than the above date, look for a newer version before reporting problems. (See http://www.XFree86.Org/) Build Operating System: Linux 2.4.18-1mdksmp i686 [ELF] Module Loader present Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: /var/log/XFree86.0.log, Time: Sat May 11 20:56:17 2002 (==) Using config file: /etc/X11/XF86Config-4 (==) ServerLayout layout1 (**) |--Screen screen1 (0) (**) | |--Monitor iiyama Vision Master Pro 512 (**) | |--Device GLX (**) |--Input Device wheel-ps2 (**) |--Input Device us-kbd (**) Option AutoRepeat 250 30 (**) Option XkbRules xfree86 (**) XKB: rules: xfree86 (**) Option XkbModel pc105 (**) XKB: model: pc105 (**) Option XkbLayout us (**) XKB: layout: us (==) Keyboard: CustomKeycode disabled (**) FontPath set to unix/:-1 (**) RgbPath set to /usr/X11R6/lib/X11/rgb (==) ModulePath set to /usr/X11R6/lib/modules (**) Option AllowMouseOpenFail (--) using VT number 7 (II) Open APM successful (II) Module ABI versions: XFree86 ANSI C Emulation: 0.1 XFree86 Video Driver: 0.5 XFree86 XInput driver : 0.3 XFree86 Server Extension : 0.1 XFree86 Font Renderer : 0.3 (II) Loader running on linux (II) LoadModule: bitmap (II) Loading /usr/X11R6/lib/modules/fonts/libbitmap.a (II) Module bitmap: vendor=The XFree86 Project compiled for 4.2.0, module version = 1.0.0 Module class: XFree86 Font Renderer ABI class: XFree86 Font Renderer, version 0.3 (II) Loading font Bitmap (II) LoadModule: pcidata (II) Loading /usr/X11R6/lib/modules/libpcidata.a (II) Module pcidata: vendor=The XFree86 Project compiled for 4.2.0, module version = 0.1.0 ABI class: XFree86 Video Driver, version 0.5 (II) PCI: Probing config type using method 1 (II) PCI: Config type is 1 (II) PCI: stages = 0x03, oldVal1 = 0x80008864, mode1Res1 = 0x8000 (II) PCI: PCI scan (all values are in hex) (II) PCI: 00:00:0: chip 1106,3099 card 1106, rev 00 class 06,00,00 hdr 00 (II) PCI: 00:01:0: chip 1106,b099 card , rev 00 class 06,04,00 hdr 01 (II) PCI: 00:07:0: chip 1106,3065 card 1186,1400 rev 43 class 02,00,00 hdr 00 (II) PCI: 00:11:0: chip 1106,3147 card 1106, rev 00 class 06,01,00 hdr 80 (II) PCI: 00:11:1: chip 1106,0571 card 1106,0571 rev 06 class 01,01,8a hdr 00 (II) PCI: 00:11:2: chip 1106,3038 card 0925,1234 rev 23 class 0c,03,00 hdr 00 (II) PCI: 00:11:3: chip 1106,3038 card 0925,1234 rev 23 class 0c,03,00 hdr 00 (II) PCI: 00:11:5: chip 1106,3059 card 1462,4720 rev 40 class 04,01,00 hdr 00 (II) PCI: 01:00:0: chip 10de,0251 card 1462,8711 rev a2 class 03,00,00 hdr 00 (II) PCI: End of PCI scan (II) LoadModule: scanpci (II) Loading /usr/X11R6/lib/modules/libscanpci.a (II) Module scanpci: vendor=The XFree86 Project compiled for 4.2.0, module version = 0.1.0 ABI class: XFree86 Video Driver, version 0.5 (II) UnloadModule: scanpci (II) Unloading /usr/X11R6/lib/modules/libscanpci.a (II) Host-to-PCI bridge: (II) PCI-to-ISA bridge: (II) PCI-to-PCI bridge: (II) Bus 0: bridge is at (0:0:0), (-1,0,0), BCTRL: 0x08 (VGA_EN is set) (II) Bus 0 I/O range: [0] -1 0x - 0x (0x1) IX[B] (II) Bus 0 non-prefetchable memory range: [0] -1 0x - 0x (0x0) MX[B] (II) Bus 0 prefetchable memory range: [0] -1 0x - 0x (0x0) MX[B] (II)
Re: [Xpert]Using Xv to display odd/even fields from a TV camera
On Sat, 11 May 2002, Paul Robertson wrote: Can I butt in with some basic questions? I'd just like to understand what kinds of applications will benefit from this proposal. We have lots of DVD players, the ubiquitous Brooktree framegrabber, and esoteric stuff like my ADV601. I know for sure it would help me. The Bt chips normally produce 25/30 interlaced frames/sec which might look lousy when displayed if there is horizontal motion. They can be programmed to decimate the frame, so you would only see say 25/30 even fields/sec Can they also be programmed to deliver 50/60 fields/sec? Does v4l support all this? Do v4l apps usually have the Bt chip writing the YUV image directly into video memory? Would Xv, or the graphics driver support odd/even fields in this case? In that case, no. In the case of a decoder dumping data to the graphics controller via the VIP (CCIR 656) it's possible and I'm currently looking at implementing a generic CCIR656 input device for the NVIDIA driver (for NVIDIA Personal Cinema and the like). I will automatically bob the video in that case. No API changes are required for that. You just tell the Xv adaptor where to put the data and it will put anything coming through the VIP port there. It relies on another piece of software to program the device that sends stuff through the VIP, whether that is a TV decoder, DVD card, or other device. For cases where a Bt chip dumps YUV data to the framebuffer directly, there are some synchronization issues that can't be solved unless the Bt driver and overlay driver are the same driver. Currently, with Xv+V4L based solutions, the Bt control is in the kernel while the overlay is in the X-server. I don't see how to handle the synchronization in that case. DVD players I know nothing about. What do they do? Mpeg2 supports interleaved content. Looks like crap if you display it as a weave. We're mostly talking about that on this list. I think we merely need a standard XvPortAttribute hint to tell the Xv adaptor if the next Xv(Shm)PutImage request should be a field instead of the default frame behavior. The Xv adaptor only loads half of the data in that case and displays it with the correct offsets and scaling. Mark. ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
