Date: Thu, 5 Mar 1998 21:09:22 -0500 From: Randall Hopper <rhh@ct.picker.com> To: Joao Carlos Mendes Luis <jonny@coppe.ufrj.br>, Amancio Hasty <hasty@rah.star-gate.com> Cc: multimedia@FreeBSD.ORG Subject: Re: fxtv question (request ?) Message-ID: <19980305210922.02925@ct.picker.com> In-Reply-To: <199803060119.WAA09941@gaia.coppe.ufrj.br>; from Joao Carlos Mendes Luis on Thu, Mar 05, 1998 at 10:19:48PM -0300 References: <19980305200858.25805@ct.picker.com> <199803060119.WAA09941@gaia.coppe.ufrj.br>
next in thread | previous in thread | raw e-mail | index | archive | help
Joao Carlos Mendes Luis: |Does DirectVideo support more than one program simultaneously ? But |even if one of those is forced to map images, there's no problem. Amancio Hasty: |We can support multiple cards via the DMA to DMA interface with no |sweat. For DMA to DMA the driver accepts a virtual address for |the physicall map device. You are free to display at any point |in the mmaped region. During the initial phase of the driver |development I had two bt848 images blasting to the screen. |In fact a PiP feature for fxtv is not a bad idea -- now I duck |before Randall starts throwing things at me 8) Yep. And no inherent limitation as far as X goes either since we're really not using DGA. We're just stealing the frame buffer location and geometry from it, ...and then going off and doing our own thing :-) Joao Carlos Mendes Luis: |It's will not be a common setup. (But Unix is fun with strange |setups, not the commom ones.) Might as well try it -- would be cool just to see it work. If I had a spare card, wouldn't mind trying this myself -- at a 33Mhz & 41.5Mhz PCI bus speed. ;-) (Hmmm...) Wonder if any interesting problems would come up with two PCI devices DMAing to overlapping regions in the PCI address space (on the same target PCI card) at the same time. Let us know how it goes. Worse comes to worse, you can fall-back to using -disableDirectV on one or both fxtv instances. |If I did not have a CDROM, I could put the SB output into GUS line input, |and bktr output into GUS CD input. But for now I prefer to have more |quality on my CD Audio than on TV Audio. Obviously. :) Yep. Makes sense :-) Randall To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19980305210922.02925>