On Tue, Jul 22, 2003 at 09:59:27AM -0700, Tim Roberts wrote: > On Tue, 22 Jul 2003 10:27:44 +0530, Nitin Mahajan wrote: > > > > Hello Everyone! > > > > Iam writing a driver for 69030 card. > > I have to support CIF and QCIF formats. > > WHICH 69030? Surely you must realize that chip numbers are not unique > industry-wide.
Well, I suppose that's the Asiliant 69030, since no other 69030 I know of does video grabbing that the CIF and QCIF acronyms seem to suggest. > >Now my interpretation is that the second point above refers to the frame > >size and the driver implementation (video modes)has nothing to do with it. > >Is this interpretation of mine is correct? > > >Second question is that, how do I achive the frame rate of 30fps? > > 30fps for what? I assume 30fps frame grabbing. That's not possible with these chips in CIF, in QCIF you may have a chance. The limit is the video memory to system memory copy speed, which is about a megabyte per second. > >I have > >programmed the BitBLT engine for the card,but that also puts only 64Kb data > >on screen in on shot,so always I need to divide the Image into 64KB parts. Using the bitblt engine doesn't help unfortunately. > Are you talking about system-memory-to-video-memory transfers? I'm surprised > to hear there is a 64K limitation in any relatively modern graphics card. The 69030 is just a slightly improved 69000, which both are quite ancient graphics cards. -- Vojtech Pavlik SuSE Labs, SuSE CR _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
