38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
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Video 4 Linux adaptor driver for XFree86 v4.0
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Developed by Gerd Knorr <kraxel@goldbach.in-berlin.de> and
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David Woodhouse <David.Woodhouse@mvhi.com>
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----------------------------------------------------------------------------
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This chipset driver does not provide a graphics adaptor driver, but instead
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registers a number of generic Xv adaptors which can be used with any graphics
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chipset driver.
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In order to use v4l adaptors with your favourite graphics driver, the
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graphics driver must do two things:
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1. Correctly set pScrn->memPhysBase and pScrn->fbOffset for the screens that
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it provides, to the physical address of the frame buffer memory, and
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the offset within that memory that the current mode starts,
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respectively.
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2. Use the xf86XVListGenericAdaptors() routine to list all available Xv
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adaptors which are usable with any target device, and initialise
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them on its screens with xf86XVScreenInit() as follows...
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{
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XF86VideoAdaptorPtr *ptr;
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int xvexts = xf86XVListGenericAdaptors(&ptr);
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if (xvexts) {
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xf86XVScreenInit(pScreen, ptr, xvexts);
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}
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}
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$XFree86: xc/programs/Xserver/hw/xfree86/drivers/v4l/README,v 1.1 1999/03/28 15:32:50 dawes Exp $
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