/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atixv.c,v 1.5 2003/04/25 04:09:54 tsi Exp $ *//* * Copyright 2001 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that copyright * notice and this permission notice appear in supporting documentation, and * that the name of Marc Aurele La France not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission.  Marc Aurele La France makes no representations * about the suitability of this software for any purpose.  It is provided * "as-is" without express or implied warranty. * * MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO * EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */#ifdef HAVE_CONFIG_H#include "config.h"#endif#include "atiadapter.h"#include "atimach64xv.h"#include "atistruct.h"#include "atixv.h"/* * ATIXVFreeAdaptorInfo -- * * Free XVideo adaptor information. */static voidATIXVFreeAdaptorInfo(    XF86VideoAdaptorPtr *ppAdaptor,    int                 nAdaptor){    if (!ppAdaptor)        return;    while (nAdaptor > 0)        xfree(ppAdaptor[--nAdaptor]);    xfree(ppAdaptor);}/* * ATIXVInitializeAdaptor -- * * This is called by the server's XVideo support layer to initialise an XVideo * adapter. */static intATIXVInitializeAdaptor(    ScrnInfoPtr         pScreenInfo,    XF86VideoAdaptorPtr **pppAdaptor){    ScreenPtr           pScreen    = screenInfo.screens[pScreenInfo->scrnIndex];    ATIPtr              pATI       = ATIPTR(pScreenInfo);    XF86VideoAdaptorPtr *ppAdaptor = NULL;    int                 nAdaptor;    switch (pATI->Adapter)    {        case ATI_ADAPTER_MACH64:            nAdaptor = ATIMach64XVInitialiseAdaptor(pScreen, pScreenInfo, pATI,                &ppAdaptor);            break;        default:            nAdaptor = 0;            break;    }    if (pppAdaptor)        *pppAdaptor = ppAdaptor;    else        ATIXVFreeAdaptorInfo(ppAdaptor, nAdaptor);    return nAdaptor;}/* * ATIXVPreInit -- * * This function is called by ATIPreInit() to set up the environment required * to support the XVideo extension. */voidATIXVPreInit(    ATIPtr      pATI){#ifndef AVOID_CPIO    /* Currently a linear aperture is needed ... */    if (!pATI->LinearBase)        return;#endif /* AVOID_CPIO */    (void)xf86XVRegisterGenericAdaptorDriver(ATIXVInitializeAdaptor);}/* * ATIInitializeXVideo -- * * This function is called to initialise XVideo extension support on a screen. */BoolATIInitializeXVideo(    ScreenPtr   pScreen,    ScrnInfoPtr pScreenInfo,    ATIPtr      pATI){    XF86VideoAdaptorPtr *ppAdaptor;    int                 nAdaptor;    Bool                result;    if (!(pScreenInfo->memPhysBase = pATI->LinearBase))        return FALSE;    pScreenInfo->fbOffset = 0;    nAdaptor = xf86XVListGenericAdaptors(pScreenInfo, &ppAdaptor);    result = xf86XVScreenInit(pScreen, ppAdaptor, nAdaptor);    ATIXVFreeAdaptorInfo(ppAdaptor, nAdaptor);    return result;}/* * ATICloseXVideo -- * * This function is called during screen termination to clean up after XVideo * initialisation. */voidATICloseXVideo(    ScreenPtr   pScreen,    ScrnInfoPtr pScreenInfo,    ATIPtr      pATI){    switch (pATI->Adapter)    {        case ATI_ADAPTER_MACH64:            ATIMach64CloseXVideo(pScreen, pScreenInfo, pATI);            break;        default:            break;    }}