xserver mesa git update 10 Mar 2011

1 files changed, 1183 insertions, 1185 deletions

diff --git a/xorg-server/Xext/xvmain.c b/xorg-server/Xext/xvmain.c
index f3b6d84b9..cd6f0979c 100644
--- a/xorg-server/Xext/xvmain.c
+++ b/xorg-server/Xext/xvmain.c
@@ -1,1185 +1,1183 @@
-/***********************************************************

-Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts,

-and the Massachusetts Institute of Technology, Cambridge, Massachusetts.

-

-                        All Rights Reserved

-

-Permission to use, copy, modify, and distribute this software and its 

-documentation for any purpose and without fee is hereby granted, 

-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 names of Digital or MIT not be

-used in advertising or publicity pertaining to distribution of the

-software without specific, written prior permission.  

-

-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING

-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL

-DIGITAL 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.

-

-******************************************************************/

-

-/*

-** File: 

-**

-**   xvmain.c --- Xv server extension main device independent module.

-**   

-** Author: 

-**

-**   David Carver (Digital Workstation Engineering/Project Athena)

-**

-** Revisions:

-**

-**   04.09.91 Carver

-**     - change: stop video always generates an event even when video

-**       wasn't active

-**

-**   29.08.91 Carver

-**     - change: unrealizing windows no longer preempts video

-**

-**   11.06.91 Carver

-**     - changed SetPortControl to SetPortAttribute

-**     - changed GetPortControl to GetPortAttribute

-**     - changed QueryBestSize

-**

-**   28.05.91 Carver

-**     - fixed Put and Get requests to not preempt operations to same drawable

-**

-**   15.05.91 Carver

-**     - version 2.0 upgrade

-**

-**   19.03.91 Carver

-**     - fixed Put and Get requests to honor grabbed ports.

-**     - fixed Video requests to update di structure with new drawable, and

-**       client after calling ddx.

-**

-**   24.01.91 Carver

-**     - version 1.4 upgrade

-**       

-** Notes:

-**

-**   Port structures reference client structures in a two different

-**   ways: when grabs, or video is active.  Each reference is encoded

-**   as fake client resources and thus when the client is goes away so

-**   does the reference (it is zeroed).  No other action is taken, so

-**   video doesn't necessarily stop.  It probably will as a result of

-**   other resources going away, but if a client starts video using

-**   none of its own resources, then the video will continue to play

-**   after the client disappears.

-**

-**

-*/

-

-#ifdef HAVE_DIX_CONFIG_H

-#include <dix-config.h>

-#endif

-

-#include <string.h>

-

-#include <X11/X.h>

-#include <X11/Xproto.h>

-#include "misc.h"

-#include "os.h"

-#include "scrnintstr.h"

-#include "windowstr.h"

-#include "pixmapstr.h"

-#include "gc.h"

-#include "extnsionst.h"

-#include "dixstruct.h"

-#include "resource.h"

-#include "opaque.h"

-#include "input.h"

-

-#define GLOBAL

-

-#include <X11/extensions/Xv.h>

-#include <X11/extensions/Xvproto.h>

-#include "xvdix.h"

-

-#ifdef PANORAMIX

-#include "panoramiX.h"

-#include "panoramiXsrv.h"

-#endif

-#include "xvdisp.h"

-

-static DevPrivateKeyRec XvScreenKeyRec;

-#define XvScreenKey (&XvScreenKeyRec)

-unsigned long XvExtensionGeneration = 0;

-unsigned long XvScreenGeneration = 0;

-unsigned long XvResourceGeneration = 0;

-

-int XvReqCode;

-int XvEventBase;

-int XvErrorBase;

-

-unsigned long XvRTPort;

-unsigned long XvRTEncoding;

-unsigned long XvRTGrab;

-unsigned long XvRTVideoNotify;

-unsigned long XvRTVideoNotifyList;

-unsigned long XvRTPortNotify;

-

-

-

-/* EXTERNAL */

-

-static void WriteSwappedVideoNotifyEvent(xvEvent *, xvEvent *);

-static void WriteSwappedPortNotifyEvent(xvEvent *, xvEvent *);

-static Bool CreateResourceTypes(void);

-

-static Bool XvCloseScreen(int, ScreenPtr);

-static Bool XvDestroyPixmap(PixmapPtr);

-static Bool XvDestroyWindow(WindowPtr);

-static void XvResetProc(ExtensionEntry*);

-static int XvdiDestroyGrab(pointer, XID);

-static int XvdiDestroyEncoding(pointer, XID);

-static int XvdiDestroyVideoNotify(pointer, XID);

-static int XvdiDestroyPortNotify(pointer, XID);

-static int XvdiDestroyVideoNotifyList(pointer, XID);

-static int XvdiDestroyPort(pointer, XID);

-static int XvdiSendVideoNotify(XvPortPtr, DrawablePtr, int);

-

-

-

-

-/*

-** XvExtensionInit

-**

-**

-*/

-

-void

-XvExtensionInit(void)

-{

-  ExtensionEntry *extEntry;

-

-  if (!dixRegisterPrivateKey(&XvScreenKeyRec, PRIVATE_SCREEN, 0))

-      return;

-

-  /* LOOK TO SEE IF ANY SCREENS WERE INITIALIZED; IF NOT THEN

-     INIT GLOBAL VARIABLES SO THE EXTENSION CAN FUNCTION */

-  if (XvScreenGeneration != serverGeneration)

-    {

-      if (!CreateResourceTypes())

-	{

-	  ErrorF("XvExtensionInit: Unable to allocate resource types\n");

-	  return;

-	}

-#ifdef PANORAMIX

-        XineramaRegisterConnectionBlockCallback(XineramifyXv);

-#endif

-      XvScreenGeneration = serverGeneration;

-    }

-

-  if (XvExtensionGeneration != serverGeneration)

-    {

-      XvExtensionGeneration = serverGeneration;

-

-      extEntry = AddExtension(XvName, XvNumEvents, XvNumErrors, 

-			      ProcXvDispatch, SProcXvDispatch,

-			      XvResetProc, StandardMinorOpcode);

-      if (!extEntry) 

-	{

-	  FatalError("XvExtensionInit: AddExtensions failed\n");

-	}

-

-      XvReqCode = extEntry->base;

-      XvEventBase = extEntry->eventBase;

-      XvErrorBase = extEntry->errorBase;

-

-      EventSwapVector[XvEventBase+XvVideoNotify] = 

-	(EventSwapPtr)WriteSwappedVideoNotifyEvent;

-      EventSwapVector[XvEventBase+XvPortNotify] = 

-	(EventSwapPtr)WriteSwappedPortNotifyEvent;

-

-      SetResourceTypeErrorValue(XvRTPort, _XvBadPort);

-      (void)MakeAtom(XvName, strlen(XvName), xTrue);

-

-    }

-}

-

-static Bool

-CreateResourceTypes(void)

-

-{

-  

-  if (XvResourceGeneration == serverGeneration) return TRUE;

-

-  XvResourceGeneration = serverGeneration;

-

-  if (!(XvRTPort = CreateNewResourceType(XvdiDestroyPort, "XvRTPort")))

-    {

-      ErrorF("CreateResourceTypes: failed to allocate port resource.\n");

-      return FALSE;

-    }

-

-  if (!(XvRTGrab = CreateNewResourceType(XvdiDestroyGrab, "XvRTGrab")))

-    {

-      ErrorF("CreateResourceTypes: failed to allocate grab resource.\n");

-      return FALSE;

-    }

-

-  if (!(XvRTEncoding = CreateNewResourceType(XvdiDestroyEncoding,

-					     "XvRTEncoding")))

-    {

-      ErrorF("CreateResourceTypes: failed to allocate encoding resource.\n");

-      return FALSE;

-    }

-

-  if (!(XvRTVideoNotify = CreateNewResourceType(XvdiDestroyVideoNotify,

-						"XvRTVideoNotify")))

-    {

-      ErrorF("CreateResourceTypes: failed to allocate video notify resource.\n");

-      return FALSE;

-    }

-

-  if (!(XvRTVideoNotifyList = CreateNewResourceType(XvdiDestroyVideoNotifyList,

-						    "XvRTVideoNotifyList")))

-    {

-      ErrorF("CreateResourceTypes: failed to allocate video notify list resource.\n");

-      return FALSE;

-    }

-

-  if (!(XvRTPortNotify = CreateNewResourceType(XvdiDestroyPortNotify,

-					       "XvRTPortNotify")))

-    {

-      ErrorF("CreateResourceTypes: failed to allocate port notify resource.\n");

-      return FALSE;

-    }

-

-  return TRUE;

-

-}

-

-int

-XvScreenInit(ScreenPtr pScreen)

-{

-  XvScreenPtr pxvs;

-

-  if (XvScreenGeneration != serverGeneration)

-    {

-      if (!CreateResourceTypes())

-	{

-	  ErrorF("XvScreenInit: Unable to allocate resource types\n");

-	  return BadAlloc;

-	}

-#ifdef PANORAMIX

-        XineramaRegisterConnectionBlockCallback(XineramifyXv);

-#endif

-      XvScreenGeneration = serverGeneration; 

-    }

-

-  if (!dixRegisterPrivateKey(&XvScreenKeyRec, PRIVATE_SCREEN, 0))

-      return BadAlloc;

-

-  if (dixLookupPrivate(&pScreen->devPrivates, XvScreenKey))

-    {

-      ErrorF("XvScreenInit: screen devPrivates ptr non-NULL before init\n");

-    }

-

-  /* ALLOCATE SCREEN PRIVATE RECORD */

-  

-  pxvs = malloc(sizeof (XvScreenRec));

-  if (!pxvs)

-    {

-      ErrorF("XvScreenInit: Unable to allocate screen private structure\n");

-      return BadAlloc;

-    }

-

-  dixSetPrivate(&pScreen->devPrivates, XvScreenKey, pxvs);

-  

-  pxvs->DestroyPixmap = pScreen->DestroyPixmap;

-  pxvs->DestroyWindow = pScreen->DestroyWindow;

-  pxvs->CloseScreen = pScreen->CloseScreen;

-  

-  pScreen->DestroyPixmap = XvDestroyPixmap;

-  pScreen->DestroyWindow = XvDestroyWindow;

-  pScreen->CloseScreen = XvCloseScreen;

-

-  return Success;

-}

-

-static Bool

-XvCloseScreen(

-  int ii,

-  ScreenPtr pScreen

-){

-

-  XvScreenPtr pxvs;

-

-  pxvs = (XvScreenPtr)dixLookupPrivate(&pScreen->devPrivates, XvScreenKey);

-

-  pScreen->DestroyPixmap = pxvs->DestroyPixmap;

-  pScreen->DestroyWindow = pxvs->DestroyWindow;

-  pScreen->CloseScreen = pxvs->CloseScreen;

-

-  (* pxvs->ddCloseScreen)(ii, pScreen); 

-

-  free(pxvs);

-

-  dixSetPrivate(&pScreen->devPrivates, XvScreenKey, NULL);

-

-  return (*pScreen->CloseScreen)(ii, pScreen);

-}

-

-static void

-XvResetProc(ExtensionEntry* extEntry)

-{

-    XvResetProcVector();

-}

-

-DevPrivateKey

-XvGetScreenKey(void)

-{

-    return XvScreenKey;

-}

-

-unsigned long

-XvGetRTPort(void)

-{

-  return XvRTPort;

-}

-

-static Bool

-XvDestroyPixmap(PixmapPtr pPix)

-{

-  Bool status;

-  ScreenPtr pScreen;

-  XvScreenPtr pxvs;

-  XvAdaptorPtr pa;

-  int na;

-  XvPortPtr pp;

-  int np;

-

-  pScreen = pPix->drawable.pScreen;

-

-  SCREEN_PROLOGUE(pScreen, DestroyPixmap);

-

-  pxvs = (XvScreenPtr)dixLookupPrivate(&pScreen->devPrivates, XvScreenKey);

-

-  /* CHECK TO SEE IF THIS PORT IS IN USE */

-

-  pa = pxvs->pAdaptors;

-  na = pxvs->nAdaptors;

-  while (na--)

-    {

-      np = pa->nPorts;

-      pp = pa->pPorts;

-

-      while (np--)

-	{

-	  if (pp->pDraw == (DrawablePtr)pPix)

-	    {

-	      XvdiSendVideoNotify(pp, pp->pDraw, XvPreempted);

-

-	      (void)(* pp->pAdaptor->ddStopVideo)(NULL, pp, pp->pDraw);

-

-	      pp->pDraw = NULL;

-	      pp->client = NULL;

-	      pp->time = currentTime;

-	    }

-	  pp++;

-	}

-      pa++;

-    }

-  

-  status = (* pScreen->DestroyPixmap)(pPix);

-

-  SCREEN_EPILOGUE(pScreen, DestroyPixmap, XvDestroyPixmap);

-

-  return status;

-

-}

-

-static Bool

-XvDestroyWindow(WindowPtr pWin)

-{

-  Bool status;

-  ScreenPtr pScreen;

-  XvScreenPtr pxvs;

-  XvAdaptorPtr pa;

-  int na;

-  XvPortPtr pp;

-  int np;

-

-  pScreen = pWin->drawable.pScreen;

-

-  SCREEN_PROLOGUE(pScreen, DestroyWindow);

-

-  pxvs = (XvScreenPtr)dixLookupPrivate(&pScreen->devPrivates, XvScreenKey);

-

-  /* CHECK TO SEE IF THIS PORT IS IN USE */

-

-  pa = pxvs->pAdaptors;

-  na = pxvs->nAdaptors;

-  while (na--)

-    {

-      np = pa->nPorts;

-      pp = pa->pPorts;

-

-      while (np--)

-	{

-	  if (pp->pDraw == (DrawablePtr)pWin)

-	    {

-	      XvdiSendVideoNotify(pp, pp->pDraw, XvPreempted);

-

-	      (void)(* pp->pAdaptor->ddStopVideo)(NULL, pp, pp->pDraw);

-

-	      pp->pDraw = NULL;

-	      pp->client = NULL;

-	      pp->time = currentTime;

-	    }

-	  pp++;

-	}

-      pa++;

-    }

-

-  

-  status = (* pScreen->DestroyWindow)(pWin);

-

-  SCREEN_EPILOGUE(pScreen, DestroyWindow, XvDestroyWindow);

-

-  return status;

-

-}

-

-/* The XvdiVideoStopped procedure is a hook for the device dependent layer.

-   It provides a way for the dd layer to inform the di layer that video has

-   stopped in a port for reasons that the di layer had no control over; note

-   that it doesn't call back into the dd layer */

-

-int

-XvdiVideoStopped(XvPortPtr pPort, int reason)

-{

-  

-  /* IF PORT ISN'T ACTIVE THEN WE'RE DONE */

-

-  if (!pPort->pDraw) return Success;

-

-  XvdiSendVideoNotify(pPort, pPort->pDraw, reason);

-

-  pPort->pDraw = NULL;

-  pPort->client = NULL;

-  pPort->time = currentTime;

-

-  return Success;

-

-}

-

-static int 

-XvdiDestroyPort(pointer pPort, XID id)

-{

-  return (* ((XvPortPtr)pPort)->pAdaptor->ddFreePort)(pPort);

-}

-

-static int

-XvdiDestroyGrab(pointer pGrab, XID id)

-{

-  ((XvGrabPtr)pGrab)->client = NULL;

-  return Success;

-}

-

-static int

-XvdiDestroyVideoNotify(pointer pn, XID id)

-{

-  /* JUST CLEAR OUT THE client POINTER FIELD */

-

-  ((XvVideoNotifyPtr)pn)->client = NULL;

-  return Success;

-}

-

-static int

-XvdiDestroyPortNotify(pointer pn, XID id)

-{

-  /* JUST CLEAR OUT THE client POINTER FIELD */

-

-  ((XvPortNotifyPtr)pn)->client = NULL;

-  return Success;

-}

-

-static int

-XvdiDestroyVideoNotifyList(pointer pn, XID id)

-{

-  XvVideoNotifyPtr npn,cpn;

-

-  /* ACTUALLY DESTROY THE NOTITY LIST */

-

-  cpn = (XvVideoNotifyPtr)pn;

-

-  while (cpn)

-    {

-      npn = cpn->next;

-      if (cpn->client) FreeResource(cpn->id, XvRTVideoNotify);

-      free(cpn);

-      cpn = npn;

-    }

-  return Success;

-}

-

-static int

-XvdiDestroyEncoding(pointer value, XID id)

-{

-  return Success;

-}

-

-static int

-XvdiSendVideoNotify(XvPortPtr pPort, DrawablePtr pDraw, int reason)

-{

-  xvEvent event;

-  XvVideoNotifyPtr pn;

-

-  dixLookupResourceByType((pointer *)&pn, pDraw->id, XvRTVideoNotifyList,

-			  serverClient, DixReadAccess);

-

-  while (pn) 

-    {

-      event.u.u.type = XvEventBase + XvVideoNotify;

-      event.u.videoNotify.time = currentTime.milliseconds;

-      event.u.videoNotify.drawable = pDraw->id;

-      event.u.videoNotify.port = pPort->id;

-      event.u.videoNotify.reason = reason;

-      WriteEventsToClient(pn->client, 1, (xEventPtr)&event);

-      pn = pn->next;

-    }

-

-  return Success;

-

-}

-

-

-int

-XvdiSendPortNotify(

-  XvPortPtr pPort,

-  Atom attribute,

-  INT32 value

-){

-  xvEvent event;

-  XvPortNotifyPtr pn;

-

-  pn = pPort->pNotify;

-

-  while (pn) 

-    {

-      event.u.u.type = XvEventBase + XvPortNotify;

-      event.u.portNotify.time = currentTime.milliseconds;

-      event.u.portNotify.port = pPort->id;

-      event.u.portNotify.attribute = attribute;

-      event.u.portNotify.value = value;

-      WriteEventsToClient(pn->client, 1, (xEventPtr)&event);

-      pn = pn->next;

-    }

-

-  return Success;

-

-}

-

-

-#define CHECK_SIZE(dw, dh, sw, sh) {                                  \

-  if(!dw || !dh || !sw || !sh)  return Success;                       \

-  /* The region code will break these if they are too large */        \

-  if((dw > 32767) || (dh > 32767) || (sw > 32767) || (sh > 32767))    \

-        return BadValue;                                              \

-}

-

-

-int

-XvdiPutVideo(   

-   ClientPtr client,

-   DrawablePtr pDraw,

-   XvPortPtr pPort,

-   GCPtr pGC,

-   INT16 vid_x, INT16 vid_y, 

-   CARD16 vid_w, CARD16 vid_h, 

-   INT16 drw_x, INT16 drw_y,

-   CARD16 drw_w, CARD16 drw_h

-){

-  DrawablePtr pOldDraw;

-

-  CHECK_SIZE(drw_w, drw_h, vid_w, vid_h);

-

-  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */

-

-  UpdateCurrentTime();

-

-  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN

-     INFORM CLIENT OF ITS FAILURE */

-

-  if (pPort->grab.client && (pPort->grab.client != client))

-    {

-      XvdiSendVideoNotify(pPort, pDraw, XvBusy);

-      return Success;

-    }

-

-  /* CHECK TO SEE IF PORT IS IN USE; IF SO THEN WE MUST DELIVER INTERRUPTED

-     EVENTS TO ANY CLIENTS WHO WANT THEM */

-

-  pOldDraw = pPort->pDraw;

-  if ((pOldDraw) && (pOldDraw != pDraw))

-    {

-      XvdiSendVideoNotify(pPort, pPort->pDraw, XvPreempted);

-    }

-

-  (void) (* pPort->pAdaptor->ddPutVideo)(client, pDraw, pPort, pGC,

-					   vid_x, vid_y, vid_w, vid_h, 

-					   drw_x, drw_y, drw_w, drw_h);

-

-  if ((pPort->pDraw) && (pOldDraw != pDraw))

-    {

-      pPort->client = client;

-      XvdiSendVideoNotify(pPort, pPort->pDraw, XvStarted);

-    }

-

-  pPort->time = currentTime;

-

-  return Success;

-

-}

-

-int

-XvdiPutStill(   

-   ClientPtr client,

-   DrawablePtr pDraw,

-   XvPortPtr pPort,

-   GCPtr pGC,

-   INT16 vid_x, INT16 vid_y, 

-   CARD16 vid_w, CARD16 vid_h, 

-   INT16 drw_x, INT16 drw_y,

-   CARD16 drw_w, CARD16 drw_h

-){

-  int status;

-

-  CHECK_SIZE(drw_w, drw_h, vid_w, vid_h);

-

-  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */

-

-  UpdateCurrentTime();

-

-  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN

-     INFORM CLIENT OF ITS FAILURE */

-

-  if (pPort->grab.client && (pPort->grab.client != client))

-    {

-      XvdiSendVideoNotify(pPort, pDraw, XvBusy);

-      return Success;

-    }

-

-  pPort->time = currentTime;

-

-  status = (* pPort->pAdaptor->ddPutStill)(client, pDraw, pPort, pGC, 

-					   vid_x, vid_y, vid_w, vid_h, 

-					   drw_x, drw_y, drw_w, drw_h);

-

-  return status;

-

-}

-

-int

-XvdiPutImage(   

-   ClientPtr client, 

-   DrawablePtr pDraw, 

-   XvPortPtr pPort, 

-   GCPtr pGC,

-   INT16 src_x, INT16 src_y, 

-   CARD16 src_w, CARD16 src_h, 

-   INT16 drw_x, INT16 drw_y,

-   CARD16 drw_w, CARD16 drw_h,

-   XvImagePtr image,

-   unsigned char* data,

-   Bool sync,

-   CARD16 width, CARD16 height

-){

-  CHECK_SIZE(drw_w, drw_h, src_w, src_h);

-

-  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */

-

-  UpdateCurrentTime();

-

-  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN

-     INFORM CLIENT OF ITS FAILURE */

-

-  if (pPort->grab.client && (pPort->grab.client != client))

-    {

-      XvdiSendVideoNotify(pPort, pDraw, XvBusy);

-      return Success;

-    }

-

-  pPort->time = currentTime;

-

-  return (* pPort->pAdaptor->ddPutImage)(client, pDraw, pPort, pGC, 

-					   src_x, src_y, src_w, src_h, 

-					   drw_x, drw_y, drw_w, drw_h,

-					   image, data, sync, width, height);

-}

-

-

-int

-XvdiGetVideo(

-   ClientPtr client,

-   DrawablePtr pDraw,

-   XvPortPtr pPort,

-   GCPtr pGC,

-   INT16 vid_x, INT16 vid_y, 

-   CARD16 vid_w, CARD16 vid_h, 

-   INT16 drw_x, INT16 drw_y,

-   CARD16 drw_w, CARD16 drw_h

-){

-  DrawablePtr pOldDraw;

-

-  CHECK_SIZE(drw_w, drw_h, vid_w, vid_h);

-

-  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */

-

-  UpdateCurrentTime();

-

-  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN

-     INFORM CLIENT OF ITS FAILURE */

-

-  if (pPort->grab.client && (pPort->grab.client != client))

-    {

-      XvdiSendVideoNotify(pPort, pDraw, XvBusy);

-      return Success;

-    }

-

-  /* CHECK TO SEE IF PORT IS IN USE; IF SO THEN WE MUST DELIVER INTERRUPTED

-     EVENTS TO ANY CLIENTS WHO WANT THEM */

-

-  pOldDraw = pPort->pDraw;

-  if ((pOldDraw) && (pOldDraw != pDraw))

-    {

-      XvdiSendVideoNotify(pPort, pPort->pDraw, XvPreempted);

-    }

-

-  (void) (* pPort->pAdaptor->ddGetVideo)(client, pDraw, pPort, pGC,

-					   vid_x, vid_y, vid_w, vid_h, 

-					   drw_x, drw_y, drw_w, drw_h);

-

-  if ((pPort->pDraw) && (pOldDraw != pDraw))

-    {

-      pPort->client = client;

-      XvdiSendVideoNotify(pPort, pPort->pDraw, XvStarted);

-    }

-

-  pPort->time = currentTime;

-

-  return Success;

-

-}

-

-int

-XvdiGetStill(

-   ClientPtr client,

-   DrawablePtr pDraw,

-   XvPortPtr pPort,

-   GCPtr pGC,

-   INT16 vid_x, INT16 vid_y, 

-   CARD16 vid_w, CARD16 vid_h, 

-   INT16 drw_x, INT16 drw_y,

-   CARD16 drw_w, CARD16 drw_h

-){

-  int status;

-

-  CHECK_SIZE(drw_w, drw_h, vid_w, vid_h);

-

-  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */

-

-  UpdateCurrentTime();

-

-  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN

-     INFORM CLIENT OF ITS FAILURE */

-

-  if (pPort->grab.client && (pPort->grab.client != client))

-    {

-      XvdiSendVideoNotify(pPort, pDraw, XvBusy);

-      return Success;

-    }

-

-  status = (* pPort->pAdaptor->ddGetStill)(client, pDraw, pPort, pGC, 

-					   vid_x, vid_y, vid_w, vid_h, 

-					   drw_x, drw_y, drw_w, drw_h);

-

-  pPort->time = currentTime;

-

-  return status;

-

-}

-

-int

-XvdiGrabPort(

-   ClientPtr client,

-   XvPortPtr pPort,

-   Time ctime,

-   int *p_result

-){

-  unsigned long id;

-  TimeStamp time;

-

-  UpdateCurrentTime();

-  time = ClientTimeToServerTime(ctime);

-

-  if (pPort->grab.client && (client != pPort->grab.client))

-    {

-      *p_result = XvAlreadyGrabbed;

-      return Success;

-    }

-

-  if ((CompareTimeStamps(time, currentTime) == LATER) ||

-      (CompareTimeStamps(time, pPort->time) == EARLIER))

-    {

-      *p_result = XvInvalidTime;

-      return Success;

-    }

-

-  if (client == pPort->grab.client)

-    {

-      *p_result = Success;

-      return Success;

-    }

-

-  id = FakeClientID(client->index);

-

-  if (!AddResource(id, XvRTGrab, &pPort->grab))

-    {

-      return BadAlloc;

-    }

-

-  /* IF THERE IS ACTIVE VIDEO THEN STOP IT */

-

-  if ((pPort->pDraw) && (client != pPort->client))

-    {

-      XvdiStopVideo(NULL, pPort, pPort->pDraw);

-    }

-

-  pPort->grab.client = client;

-  pPort->grab.id = id;

-

-  pPort->time = currentTime;

-

-  *p_result = Success;

-

-  return Success;

-

-}

-

-int

-XvdiUngrabPort(

-  ClientPtr client,

-  XvPortPtr pPort,

-  Time ctime

-){

-  TimeStamp time;

-

-  UpdateCurrentTime();

-  time = ClientTimeToServerTime(ctime);

-

-  if ((!pPort->grab.client) || (client != pPort->grab.client))

-    {

-      return Success;

-    }

-

-  if ((CompareTimeStamps(time, currentTime) == LATER) ||

-      (CompareTimeStamps(time, pPort->time) == EARLIER))

-    {

-      return Success;

-    }

-

-  /* FREE THE GRAB RESOURCE; AND SET THE GRAB CLIENT TO NULL */

-

-  FreeResource(pPort->grab.id, XvRTGrab);

-  pPort->grab.client = NULL;

-

-  pPort->time = currentTime;

-

-  return Success;

-

-}

-

-

-int

-XvdiSelectVideoNotify(

-  ClientPtr client,

-  DrawablePtr pDraw,

-  BOOL onoff

-){

-  XvVideoNotifyPtr pn,tpn,fpn;

-  int rc;

-

-  /* FIND VideoNotify LIST */

-

-  rc = dixLookupResourceByType((pointer *)&pn, pDraw->id, XvRTVideoNotifyList,

-			       client, DixWriteAccess);

-  if (rc != Success && rc != BadValue)

-      return rc;

-

-  /* IF ONE DONES'T EXIST AND NO MASK, THEN JUST RETURN */

-

-  if (!onoff && !pn) return Success;

-

-  /* IF ONE DOESN'T EXIST CREATE IT AND ADD A RESOURCE SO THAT THE LIST

-     WILL BE DELETED WHEN THE DRAWABLE IS DESTROYED */

-

-  if (!pn) 

-    {

-      if (!(tpn = malloc(sizeof(XvVideoNotifyRec))))

-	return BadAlloc;

-      tpn->next = NULL;

-      if (!AddResource(pDraw->id, XvRTVideoNotifyList, tpn))

-	{

-	  free(tpn);

-	  return BadAlloc;

-	}

-    }

-  else

-    {

-      /* LOOK TO SEE IF ENTRY ALREADY EXISTS */

-

-      fpn = NULL;

-      tpn = pn;

-      while (tpn)

-	{

-	  if (tpn->client == client) 

-	    {

-	      if (!onoff) tpn->client = NULL;

-	      return Success;

-	    }

-	  if (!tpn->client) fpn = tpn; /* TAKE NOTE OF FREE ENTRY */

-	  tpn = tpn->next;

-	}

-

-      /* IF TUNNING OFF, THEN JUST RETURN */

-

-      if (!onoff) return Success;

-

-      /* IF ONE ISN'T FOUND THEN ALLOCATE ONE AND LINK IT INTO THE LIST */

-

-      if (fpn)

-	{

-	  tpn = fpn;

-	}

-      else

-	{

-	  if (!(tpn = malloc(sizeof(XvVideoNotifyRec))))

-	    return BadAlloc;

-	  tpn->next = pn->next;

-	  pn->next = tpn;

-	}

-    }

-

-  /* INIT CLIENT PTR IN CASE WE CAN'T ADD RESOURCE */

-  /* ADD RESOURCE SO THAT IF CLIENT EXITS THE CLIENT PTR WILL BE CLEARED */

-

-  tpn->client = NULL;

-  tpn->id = FakeClientID(client->index);

-  AddResource(tpn->id, XvRTVideoNotify, tpn);

-

-  tpn->client = client;

-  return Success;

-

-}

-

-int

-XvdiSelectPortNotify(

-   ClientPtr client,

-   XvPortPtr pPort,

-   BOOL onoff

-){

-  XvPortNotifyPtr pn,tpn;

-

-  /* SEE IF CLIENT IS ALREADY IN LIST */

-

-  tpn = NULL;

-  pn = pPort->pNotify;

-  while (pn)

-    {

-      if (!pn->client) tpn = pn; /* TAKE NOTE OF FREE ENTRY */

-      if (pn->client == client) break;

-      pn = pn->next;

-    }

-

-  /* IS THE CLIENT ALREADY ON THE LIST? */

-

-  if (pn)

-    {

-      /* REMOVE IT? */

-

-      if (!onoff)

-	{

-	  pn->client = NULL;

-	  FreeResource(pn->id, XvRTPortNotify);

-	}

-

-      return Success;

-    }

-

-  /* DIDN'T FIND IT; SO REUSE LIST ELEMENT IF ONE IS FREE OTHERWISE 

-     CREATE A NEW ONE AND ADD IT TO THE BEGINNING OF THE LIST */

-

-  if (!tpn)

-    {

-      if (!(tpn = malloc(sizeof(XvPortNotifyRec))))

-	return BadAlloc;

-      tpn->next = pPort->pNotify;

-      pPort->pNotify = tpn;

-    }

-

-  tpn->client = client;

-  tpn->id = FakeClientID(client->index);

-  AddResource(tpn->id, XvRTPortNotify, tpn);

-

-  return Success;

-

-}

-

-int

-XvdiStopVideo(

-  ClientPtr client,

-  XvPortPtr pPort,

-  DrawablePtr pDraw

-){

-  int status;

-

-  /* IF PORT ISN'T ACTIVE THEN WE'RE DONE */

-

-  if (!pPort->pDraw || (pPort->pDraw != pDraw)) 

-    {

-      XvdiSendVideoNotify(pPort, pDraw, XvStopped);

-      return Success;

-    }

-

-  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN

-     INFORM CLIENT OF ITS FAILURE */

-

-  if ((client) && (pPort->grab.client) && (pPort->grab.client != client))

-    {

-      XvdiSendVideoNotify(pPort, pDraw, XvBusy);

-      return Success;

-    }

-

-  XvdiSendVideoNotify(pPort, pDraw, XvStopped);

-

-  status = (* pPort->pAdaptor->ddStopVideo)(client, pPort, pDraw);

-

-  pPort->pDraw = NULL;

-  pPort->client = (ClientPtr)client;

-  pPort->time = currentTime;

-

-  return status;

-

-}

-

-int

-XvdiPreemptVideo(

-  ClientPtr client,

-  XvPortPtr pPort,

-  DrawablePtr pDraw

-){

-  int status;

-

-  /* IF PORT ISN'T ACTIVE THEN WE'RE DONE */

-

-  if (!pPort->pDraw || (pPort->pDraw != pDraw)) return Success;

-

-  XvdiSendVideoNotify(pPort, pPort->pDraw, XvPreempted);

-

-  status = (* pPort->pAdaptor->ddStopVideo)(client, pPort, pPort->pDraw);

-

-  pPort->pDraw = NULL;

-  pPort->client = (ClientPtr)client;

-  pPort->time = currentTime;

-

-  return status;

-

-}

-

-int

-XvdiMatchPort(

-  XvPortPtr pPort,

-  DrawablePtr pDraw

-){

-

-  XvAdaptorPtr pa;

-  XvFormatPtr pf;

-  int nf;

-

-  pa = pPort->pAdaptor;

-

-  if (pa->pScreen != pDraw->pScreen) return BadMatch;

-

-  nf = pa->nFormats;

-  pf = pa->pFormats;

-

-  while (nf--)

-    {

-      if ((pf->depth == pDraw->depth) 

-#if 0

-         && ((pDraw->type == DRAWABLE_PIXMAP) || 

-	   (wVisual(((WindowPtr)pDraw)) == pf->visual))

-#endif

-	)

-	return Success;

-      pf++;

-    }

-

-  return BadMatch;

-

-}

-

-int

-XvdiSetPortAttribute(

-  ClientPtr client,

-  XvPortPtr pPort,

-  Atom attribute,

-  INT32 value

-){

-  int status;

-

-  status = (* pPort->pAdaptor->ddSetPortAttribute)(client, pPort, attribute, value);

-  if (status == Success)

-    XvdiSendPortNotify(pPort, attribute, value);

-

-  return status;

-}

-

-int

-XvdiGetPortAttribute(

-  ClientPtr client,

-  XvPortPtr pPort,

-  Atom attribute,

-  INT32 *p_value

-){

-

-  return 

-    (* pPort->pAdaptor->ddGetPortAttribute)(client, pPort, attribute, p_value);

-

-}

-

-static void

-WriteSwappedVideoNotifyEvent(xvEvent *from, xvEvent *to)

-

-{

-

-  to->u.u.type = from->u.u.type;

-  to->u.u.detail = from->u.u.detail;

-  cpswaps(from->u.videoNotify.sequenceNumber, 

-	  to->u.videoNotify.sequenceNumber);

-  cpswapl(from->u.videoNotify.time, to->u.videoNotify.time);

-  cpswapl(from->u.videoNotify.drawable, to->u.videoNotify.drawable);

-  cpswapl(from->u.videoNotify.port, to->u.videoNotify.port);

-

-}

-

-static void

-WriteSwappedPortNotifyEvent(xvEvent *from, xvEvent *to)

-

-{

-

-  to->u.u.type = from->u.u.type;

-  to->u.u.detail = from->u.u.detail;

-  cpswaps(from->u.portNotify.sequenceNumber, to->u.portNotify.sequenceNumber);

-  cpswapl(from->u.portNotify.time, to->u.portNotify.time);

-  cpswapl(from->u.portNotify.port, to->u.portNotify.port);

-  cpswapl(from->u.portNotify.value, to->u.portNotify.value);

-

-}

+/***********************************************************
+Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts,
+and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+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 names of Digital or MIT not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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.
+
+******************************************************************/
+
+/*
+** File: 
+**
+**   xvmain.c --- Xv server extension main device independent module.
+**   
+** Author: 
+**
+**   David Carver (Digital Workstation Engineering/Project Athena)
+**
+** Revisions:
+**
+**   04.09.91 Carver
+**     - change: stop video always generates an event even when video
+**       wasn't active
+**
+**   29.08.91 Carver
+**     - change: unrealizing windows no longer preempts video
+**
+**   11.06.91 Carver
+**     - changed SetPortControl to SetPortAttribute
+**     - changed GetPortControl to GetPortAttribute
+**     - changed QueryBestSize
+**
+**   28.05.91 Carver
+**     - fixed Put and Get requests to not preempt operations to same drawable
+**
+**   15.05.91 Carver
+**     - version 2.0 upgrade
+**
+**   19.03.91 Carver
+**     - fixed Put and Get requests to honor grabbed ports.
+**     - fixed Video requests to update di structure with new drawable, and
+**       client after calling ddx.
+**
+**   24.01.91 Carver
+**     - version 1.4 upgrade
+**       
+** Notes:
+**
+**   Port structures reference client structures in a two different
+**   ways: when grabs, or video is active.  Each reference is encoded
+**   as fake client resources and thus when the client is goes away so
+**   does the reference (it is zeroed).  No other action is taken, so
+**   video doesn't necessarily stop.  It probably will as a result of
+**   other resources going away, but if a client starts video using
+**   none of its own resources, then the video will continue to play
+**   after the client disappears.
+**
+**
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "misc.h"
+#include "os.h"
+#include "scrnintstr.h"
+#include "windowstr.h"
+#include "pixmapstr.h"
+#include "gc.h"
+#include "extnsionst.h"
+#include "dixstruct.h"
+#include "resource.h"
+#include "opaque.h"
+#include "input.h"
+
+#define GLOBAL
+
+#include <X11/extensions/Xv.h>
+#include <X11/extensions/Xvproto.h>
+#include "xvdix.h"
+
+#ifdef PANORAMIX
+#include "panoramiX.h"
+#include "panoramiXsrv.h"
+#endif
+#include "xvdisp.h"
+
+static DevPrivateKeyRec XvScreenKeyRec;
+#define XvScreenKey (&XvScreenKeyRec)
+unsigned long XvExtensionGeneration = 0;
+unsigned long XvScreenGeneration = 0;
+unsigned long XvResourceGeneration = 0;
+
+int XvReqCode;
+int XvEventBase;
+int XvErrorBase;
+
+RESTYPE XvRTPort;
+RESTYPE XvRTEncoding;
+RESTYPE XvRTGrab;
+RESTYPE XvRTVideoNotify;
+RESTYPE XvRTVideoNotifyList;
+RESTYPE XvRTPortNotify;
+
+/* EXTERNAL */
+
+static void WriteSwappedVideoNotifyEvent(xvEvent *, xvEvent *);
+static void WriteSwappedPortNotifyEvent(xvEvent *, xvEvent *);
+static Bool CreateResourceTypes(void);
+
+static Bool XvCloseScreen(int, ScreenPtr);
+static Bool XvDestroyPixmap(PixmapPtr);
+static Bool XvDestroyWindow(WindowPtr);
+static void XvResetProc(ExtensionEntry*);
+static int XvdiDestroyGrab(pointer, XID);
+static int XvdiDestroyEncoding(pointer, XID);
+static int XvdiDestroyVideoNotify(pointer, XID);
+static int XvdiDestroyPortNotify(pointer, XID);
+static int XvdiDestroyVideoNotifyList(pointer, XID);
+static int XvdiDestroyPort(pointer, XID);
+static int XvdiSendVideoNotify(XvPortPtr, DrawablePtr, int);
+
+
+
+
+/*
+** XvExtensionInit
+**
+**
+*/
+
+void
+XvExtensionInit(void)
+{
+  ExtensionEntry *extEntry;
+
+  if (!dixRegisterPrivateKey(&XvScreenKeyRec, PRIVATE_SCREEN, 0))
+      return;
+
+  /* LOOK TO SEE IF ANY SCREENS WERE INITIALIZED; IF NOT THEN
+     INIT GLOBAL VARIABLES SO THE EXTENSION CAN FUNCTION */
+  if (XvScreenGeneration != serverGeneration)
+    {
+      if (!CreateResourceTypes())
+	{
+	  ErrorF("XvExtensionInit: Unable to allocate resource types\n");
+	  return;
+	}
+#ifdef PANORAMIX
+        XineramaRegisterConnectionBlockCallback(XineramifyXv);
+#endif
+      XvScreenGeneration = serverGeneration;
+    }
+
+  if (XvExtensionGeneration != serverGeneration)
+    {
+      XvExtensionGeneration = serverGeneration;
+
+      extEntry = AddExtension(XvName, XvNumEvents, XvNumErrors, 
+			      ProcXvDispatch, SProcXvDispatch,
+			      XvResetProc, StandardMinorOpcode);
+      if (!extEntry) 
+	{
+	  FatalError("XvExtensionInit: AddExtensions failed\n");
+	}
+
+      XvReqCode = extEntry->base;
+      XvEventBase = extEntry->eventBase;
+      XvErrorBase = extEntry->errorBase;
+
+      EventSwapVector[XvEventBase+XvVideoNotify] = 
+	(EventSwapPtr)WriteSwappedVideoNotifyEvent;
+      EventSwapVector[XvEventBase+XvPortNotify] = 
+	(EventSwapPtr)WriteSwappedPortNotifyEvent;
+
+      SetResourceTypeErrorValue(XvRTPort, _XvBadPort);
+      (void)MakeAtom(XvName, strlen(XvName), xTrue);
+
+    }
+}
+
+static Bool
+CreateResourceTypes(void)
+
+{
+  
+  if (XvResourceGeneration == serverGeneration) return TRUE;
+
+  XvResourceGeneration = serverGeneration;
+
+  if (!(XvRTPort = CreateNewResourceType(XvdiDestroyPort, "XvRTPort")))
+    {
+      ErrorF("CreateResourceTypes: failed to allocate port resource.\n");
+      return FALSE;
+    }
+
+  if (!(XvRTGrab = CreateNewResourceType(XvdiDestroyGrab, "XvRTGrab")))
+    {
+      ErrorF("CreateResourceTypes: failed to allocate grab resource.\n");
+      return FALSE;
+    }
+
+  if (!(XvRTEncoding = CreateNewResourceType(XvdiDestroyEncoding,
+					     "XvRTEncoding")))
+    {
+      ErrorF("CreateResourceTypes: failed to allocate encoding resource.\n");
+      return FALSE;
+    }
+
+  if (!(XvRTVideoNotify = CreateNewResourceType(XvdiDestroyVideoNotify,
+						"XvRTVideoNotify")))
+    {
+      ErrorF("CreateResourceTypes: failed to allocate video notify resource.\n");
+      return FALSE;
+    }
+
+  if (!(XvRTVideoNotifyList = CreateNewResourceType(XvdiDestroyVideoNotifyList,
+						    "XvRTVideoNotifyList")))
+    {
+      ErrorF("CreateResourceTypes: failed to allocate video notify list resource.\n");
+      return FALSE;
+    }
+
+  if (!(XvRTPortNotify = CreateNewResourceType(XvdiDestroyPortNotify,
+					       "XvRTPortNotify")))
+    {
+      ErrorF("CreateResourceTypes: failed to allocate port notify resource.\n");
+      return FALSE;
+    }
+
+  return TRUE;
+
+}
+
+int
+XvScreenInit(ScreenPtr pScreen)
+{
+  XvScreenPtr pxvs;
+
+  if (XvScreenGeneration != serverGeneration)
+    {
+      if (!CreateResourceTypes())
+	{
+	  ErrorF("XvScreenInit: Unable to allocate resource types\n");
+	  return BadAlloc;
+	}
+#ifdef PANORAMIX
+        XineramaRegisterConnectionBlockCallback(XineramifyXv);
+#endif
+      XvScreenGeneration = serverGeneration; 
+    }
+
+  if (!dixRegisterPrivateKey(&XvScreenKeyRec, PRIVATE_SCREEN, 0))
+      return BadAlloc;
+
+  if (dixLookupPrivate(&pScreen->devPrivates, XvScreenKey))
+    {
+      ErrorF("XvScreenInit: screen devPrivates ptr non-NULL before init\n");
+    }
+
+  /* ALLOCATE SCREEN PRIVATE RECORD */
+  
+  pxvs = malloc(sizeof (XvScreenRec));
+  if (!pxvs)
+    {
+      ErrorF("XvScreenInit: Unable to allocate screen private structure\n");
+      return BadAlloc;
+    }
+
+  dixSetPrivate(&pScreen->devPrivates, XvScreenKey, pxvs);
+  
+  pxvs->DestroyPixmap = pScreen->DestroyPixmap;
+  pxvs->DestroyWindow = pScreen->DestroyWindow;
+  pxvs->CloseScreen = pScreen->CloseScreen;
+  
+  pScreen->DestroyPixmap = XvDestroyPixmap;
+  pScreen->DestroyWindow = XvDestroyWindow;
+  pScreen->CloseScreen = XvCloseScreen;
+
+  return Success;
+}
+
+static Bool
+XvCloseScreen(
+  int ii,
+  ScreenPtr pScreen
+){
+
+  XvScreenPtr pxvs;
+
+  pxvs = (XvScreenPtr)dixLookupPrivate(&pScreen->devPrivates, XvScreenKey);
+
+  pScreen->DestroyPixmap = pxvs->DestroyPixmap;
+  pScreen->DestroyWindow = pxvs->DestroyWindow;
+  pScreen->CloseScreen = pxvs->CloseScreen;
+
+  (* pxvs->ddCloseScreen)(ii, pScreen); 
+
+  free(pxvs);
+
+  dixSetPrivate(&pScreen->devPrivates, XvScreenKey, NULL);
+
+  return (*pScreen->CloseScreen)(ii, pScreen);
+}
+
+static void
+XvResetProc(ExtensionEntry* extEntry)
+{
+    XvResetProcVector();
+}
+
+DevPrivateKey
+XvGetScreenKey(void)
+{
+    return XvScreenKey;
+}
+
+unsigned long
+XvGetRTPort(void)
+{
+  return XvRTPort;
+}
+
+static Bool
+XvDestroyPixmap(PixmapPtr pPix)
+{
+  Bool status;
+  ScreenPtr pScreen;
+  XvScreenPtr pxvs;
+  XvAdaptorPtr pa;
+  int na;
+  XvPortPtr pp;
+  int np;
+
+  pScreen = pPix->drawable.pScreen;
+
+  SCREEN_PROLOGUE(pScreen, DestroyPixmap);
+
+  pxvs = (XvScreenPtr)dixLookupPrivate(&pScreen->devPrivates, XvScreenKey);
+
+  /* CHECK TO SEE IF THIS PORT IS IN USE */
+
+  pa = pxvs->pAdaptors;
+  na = pxvs->nAdaptors;
+  while (na--)
+    {
+      np = pa->nPorts;
+      pp = pa->pPorts;
+
+      while (np--)
+	{
+	  if (pp->pDraw == (DrawablePtr)pPix)
+	    {
+	      XvdiSendVideoNotify(pp, pp->pDraw, XvPreempted);
+
+	      (void)(* pp->pAdaptor->ddStopVideo)(NULL, pp, pp->pDraw);
+
+	      pp->pDraw = NULL;
+	      pp->client = NULL;
+	      pp->time = currentTime;
+	    }
+	  pp++;
+	}
+      pa++;
+    }
+  
+  status = (* pScreen->DestroyPixmap)(pPix);
+
+  SCREEN_EPILOGUE(pScreen, DestroyPixmap, XvDestroyPixmap);
+
+  return status;
+
+}
+
+static Bool
+XvDestroyWindow(WindowPtr pWin)
+{
+  Bool status;
+  ScreenPtr pScreen;
+  XvScreenPtr pxvs;
+  XvAdaptorPtr pa;
+  int na;
+  XvPortPtr pp;
+  int np;
+
+  pScreen = pWin->drawable.pScreen;
+
+  SCREEN_PROLOGUE(pScreen, DestroyWindow);
+
+  pxvs = (XvScreenPtr)dixLookupPrivate(&pScreen->devPrivates, XvScreenKey);
+
+  /* CHECK TO SEE IF THIS PORT IS IN USE */
+
+  pa = pxvs->pAdaptors;
+  na = pxvs->nAdaptors;
+  while (na--)
+    {
+      np = pa->nPorts;
+      pp = pa->pPorts;
+
+      while (np--)
+	{
+	  if (pp->pDraw == (DrawablePtr)pWin)
+	    {
+	      XvdiSendVideoNotify(pp, pp->pDraw, XvPreempted);
+
+	      (void)(* pp->pAdaptor->ddStopVideo)(NULL, pp, pp->pDraw);
+
+	      pp->pDraw = NULL;
+	      pp->client = NULL;
+	      pp->time = currentTime;
+	    }
+	  pp++;
+	}
+      pa++;
+    }
+
+  
+  status = (* pScreen->DestroyWindow)(pWin);
+
+  SCREEN_EPILOGUE(pScreen, DestroyWindow, XvDestroyWindow);
+
+  return status;
+
+}
+
+/* The XvdiVideoStopped procedure is a hook for the device dependent layer.
+   It provides a way for the dd layer to inform the di layer that video has
+   stopped in a port for reasons that the di layer had no control over; note
+   that it doesn't call back into the dd layer */
+
+int
+XvdiVideoStopped(XvPortPtr pPort, int reason)
+{
+  
+  /* IF PORT ISN'T ACTIVE THEN WE'RE DONE */
+
+  if (!pPort->pDraw) return Success;
+
+  XvdiSendVideoNotify(pPort, pPort->pDraw, reason);
+
+  pPort->pDraw = NULL;
+  pPort->client = NULL;
+  pPort->time = currentTime;
+
+  return Success;
+
+}
+
+static int 
+XvdiDestroyPort(pointer pPort, XID id)
+{
+  return (* ((XvPortPtr)pPort)->pAdaptor->ddFreePort)(pPort);
+}
+
+static int
+XvdiDestroyGrab(pointer pGrab, XID id)
+{
+  ((XvGrabPtr)pGrab)->client = NULL;
+  return Success;
+}
+
+static int
+XvdiDestroyVideoNotify(pointer pn, XID id)
+{
+  /* JUST CLEAR OUT THE client POINTER FIELD */
+
+  ((XvVideoNotifyPtr)pn)->client = NULL;
+  return Success;
+}
+
+static int
+XvdiDestroyPortNotify(pointer pn, XID id)
+{
+  /* JUST CLEAR OUT THE client POINTER FIELD */
+
+  ((XvPortNotifyPtr)pn)->client = NULL;
+  return Success;
+}
+
+static int
+XvdiDestroyVideoNotifyList(pointer pn, XID id)
+{
+  XvVideoNotifyPtr npn,cpn;
+
+  /* ACTUALLY DESTROY THE NOTITY LIST */
+
+  cpn = (XvVideoNotifyPtr)pn;
+
+  while (cpn)
+    {
+      npn = cpn->next;
+      if (cpn->client) FreeResource(cpn->id, XvRTVideoNotify);
+      free(cpn);
+      cpn = npn;
+    }
+  return Success;
+}
+
+static int
+XvdiDestroyEncoding(pointer value, XID id)
+{
+  return Success;
+}
+
+static int
+XvdiSendVideoNotify(XvPortPtr pPort, DrawablePtr pDraw, int reason)
+{
+  xvEvent event;
+  XvVideoNotifyPtr pn;
+
+  dixLookupResourceByType((pointer *)&pn, pDraw->id, XvRTVideoNotifyList,
+			  serverClient, DixReadAccess);
+
+  while (pn) 
+    {
+      event.u.u.type = XvEventBase + XvVideoNotify;
+      event.u.videoNotify.time = currentTime.milliseconds;
+      event.u.videoNotify.drawable = pDraw->id;
+      event.u.videoNotify.port = pPort->id;
+      event.u.videoNotify.reason = reason;
+      WriteEventsToClient(pn->client, 1, (xEventPtr)&event);
+      pn = pn->next;
+    }
+
+  return Success;
+
+}
+
+
+int
+XvdiSendPortNotify(
+  XvPortPtr pPort,
+  Atom attribute,
+  INT32 value
+){
+  xvEvent event;
+  XvPortNotifyPtr pn;
+
+  pn = pPort->pNotify;
+
+  while (pn) 
+    {
+      event.u.u.type = XvEventBase + XvPortNotify;
+      event.u.portNotify.time = currentTime.milliseconds;
+      event.u.portNotify.port = pPort->id;
+      event.u.portNotify.attribute = attribute;
+      event.u.portNotify.value = value;
+      WriteEventsToClient(pn->client, 1, (xEventPtr)&event);
+      pn = pn->next;
+    }
+
+  return Success;
+
+}
+
+
+#define CHECK_SIZE(dw, dh, sw, sh) {                                  \
+  if(!dw || !dh || !sw || !sh)  return Success;                       \
+  /* The region code will break these if they are too large */        \
+  if((dw > 32767) || (dh > 32767) || (sw > 32767) || (sh > 32767))    \
+        return BadValue;                                              \
+}
+
+
+int
+XvdiPutVideo(   
+   ClientPtr client,
+   DrawablePtr pDraw,
+   XvPortPtr pPort,
+   GCPtr pGC,
+   INT16 vid_x, INT16 vid_y, 
+   CARD16 vid_w, CARD16 vid_h, 
+   INT16 drw_x, INT16 drw_y,
+   CARD16 drw_w, CARD16 drw_h
+){
+  DrawablePtr pOldDraw;
+
+  CHECK_SIZE(drw_w, drw_h, vid_w, vid_h);
+
+  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */
+
+  UpdateCurrentTime();
+
+  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN
+     INFORM CLIENT OF ITS FAILURE */
+
+  if (pPort->grab.client && (pPort->grab.client != client))
+    {
+      XvdiSendVideoNotify(pPort, pDraw, XvBusy);
+      return Success;
+    }
+
+  /* CHECK TO SEE IF PORT IS IN USE; IF SO THEN WE MUST DELIVER INTERRUPTED
+     EVENTS TO ANY CLIENTS WHO WANT THEM */
+
+  pOldDraw = pPort->pDraw;
+  if ((pOldDraw) && (pOldDraw != pDraw))
+    {
+      XvdiSendVideoNotify(pPort, pPort->pDraw, XvPreempted);
+    }
+
+  (void) (* pPort->pAdaptor->ddPutVideo)(client, pDraw, pPort, pGC,
+					   vid_x, vid_y, vid_w, vid_h, 
+					   drw_x, drw_y, drw_w, drw_h);
+
+  if ((pPort->pDraw) && (pOldDraw != pDraw))
+    {
+      pPort->client = client;
+      XvdiSendVideoNotify(pPort, pPort->pDraw, XvStarted);
+    }
+
+  pPort->time = currentTime;
+
+  return Success;
+
+}
+
+int
+XvdiPutStill(   
+   ClientPtr client,
+   DrawablePtr pDraw,
+   XvPortPtr pPort,
+   GCPtr pGC,
+   INT16 vid_x, INT16 vid_y, 
+   CARD16 vid_w, CARD16 vid_h, 
+   INT16 drw_x, INT16 drw_y,
+   CARD16 drw_w, CARD16 drw_h
+){
+  int status;
+
+  CHECK_SIZE(drw_w, drw_h, vid_w, vid_h);
+
+  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */
+
+  UpdateCurrentTime();
+
+  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN
+     INFORM CLIENT OF ITS FAILURE */
+
+  if (pPort->grab.client && (pPort->grab.client != client))
+    {
+      XvdiSendVideoNotify(pPort, pDraw, XvBusy);
+      return Success;
+    }
+
+  pPort->time = currentTime;
+
+  status = (* pPort->pAdaptor->ddPutStill)(client, pDraw, pPort, pGC, 
+					   vid_x, vid_y, vid_w, vid_h, 
+					   drw_x, drw_y, drw_w, drw_h);
+
+  return status;
+
+}
+
+int
+XvdiPutImage(   
+   ClientPtr client, 
+   DrawablePtr pDraw, 
+   XvPortPtr pPort, 
+   GCPtr pGC,
+   INT16 src_x, INT16 src_y, 
+   CARD16 src_w, CARD16 src_h, 
+   INT16 drw_x, INT16 drw_y,
+   CARD16 drw_w, CARD16 drw_h,
+   XvImagePtr image,
+   unsigned char* data,
+   Bool sync,
+   CARD16 width, CARD16 height
+){
+  CHECK_SIZE(drw_w, drw_h, src_w, src_h);
+
+  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */
+
+  UpdateCurrentTime();
+
+  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN
+     INFORM CLIENT OF ITS FAILURE */
+
+  if (pPort->grab.client && (pPort->grab.client != client))
+    {
+      XvdiSendVideoNotify(pPort, pDraw, XvBusy);
+      return Success;
+    }
+
+  pPort->time = currentTime;
+
+  return (* pPort->pAdaptor->ddPutImage)(client, pDraw, pPort, pGC, 
+					   src_x, src_y, src_w, src_h, 
+					   drw_x, drw_y, drw_w, drw_h,
+					   image, data, sync, width, height);
+}
+
+
+int
+XvdiGetVideo(
+   ClientPtr client,
+   DrawablePtr pDraw,
+   XvPortPtr pPort,
+   GCPtr pGC,
+   INT16 vid_x, INT16 vid_y, 
+   CARD16 vid_w, CARD16 vid_h, 
+   INT16 drw_x, INT16 drw_y,
+   CARD16 drw_w, CARD16 drw_h
+){
+  DrawablePtr pOldDraw;
+
+  CHECK_SIZE(drw_w, drw_h, vid_w, vid_h);
+
+  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */
+
+  UpdateCurrentTime();
+
+  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN
+     INFORM CLIENT OF ITS FAILURE */
+
+  if (pPort->grab.client && (pPort->grab.client != client))
+    {
+      XvdiSendVideoNotify(pPort, pDraw, XvBusy);
+      return Success;
+    }
+
+  /* CHECK TO SEE IF PORT IS IN USE; IF SO THEN WE MUST DELIVER INTERRUPTED
+     EVENTS TO ANY CLIENTS WHO WANT THEM */
+
+  pOldDraw = pPort->pDraw;
+  if ((pOldDraw) && (pOldDraw != pDraw))
+    {
+      XvdiSendVideoNotify(pPort, pPort->pDraw, XvPreempted);
+    }
+
+  (void) (* pPort->pAdaptor->ddGetVideo)(client, pDraw, pPort, pGC,
+					   vid_x, vid_y, vid_w, vid_h, 
+					   drw_x, drw_y, drw_w, drw_h);
+
+  if ((pPort->pDraw) && (pOldDraw != pDraw))
+    {
+      pPort->client = client;
+      XvdiSendVideoNotify(pPort, pPort->pDraw, XvStarted);
+    }
+
+  pPort->time = currentTime;
+
+  return Success;
+
+}
+
+int
+XvdiGetStill(
+   ClientPtr client,
+   DrawablePtr pDraw,
+   XvPortPtr pPort,
+   GCPtr pGC,
+   INT16 vid_x, INT16 vid_y, 
+   CARD16 vid_w, CARD16 vid_h, 
+   INT16 drw_x, INT16 drw_y,
+   CARD16 drw_w, CARD16 drw_h
+){
+  int status;
+
+  CHECK_SIZE(drw_w, drw_h, vid_w, vid_h);
+
+  /* UPDATE TIME VARIABLES FOR USE IN EVENTS */
+
+  UpdateCurrentTime();
+
+  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN
+     INFORM CLIENT OF ITS FAILURE */
+
+  if (pPort->grab.client && (pPort->grab.client != client))
+    {
+      XvdiSendVideoNotify(pPort, pDraw, XvBusy);
+      return Success;
+    }
+
+  status = (* pPort->pAdaptor->ddGetStill)(client, pDraw, pPort, pGC, 
+					   vid_x, vid_y, vid_w, vid_h, 
+					   drw_x, drw_y, drw_w, drw_h);
+
+  pPort->time = currentTime;
+
+  return status;
+
+}
+
+int
+XvdiGrabPort(
+   ClientPtr client,
+   XvPortPtr pPort,
+   Time ctime,
+   int *p_result
+){
+  unsigned long id;
+  TimeStamp time;
+
+  UpdateCurrentTime();
+  time = ClientTimeToServerTime(ctime);
+
+  if (pPort->grab.client && (client != pPort->grab.client))
+    {
+      *p_result = XvAlreadyGrabbed;
+      return Success;
+    }
+
+  if ((CompareTimeStamps(time, currentTime) == LATER) ||
+      (CompareTimeStamps(time, pPort->time) == EARLIER))
+    {
+      *p_result = XvInvalidTime;
+      return Success;
+    }
+
+  if (client == pPort->grab.client)
+    {
+      *p_result = Success;
+      return Success;
+    }
+
+  id = FakeClientID(client->index);
+
+  if (!AddResource(id, XvRTGrab, &pPort->grab))
+    {
+      return BadAlloc;
+    }
+
+  /* IF THERE IS ACTIVE VIDEO THEN STOP IT */
+
+  if ((pPort->pDraw) && (client != pPort->client))
+    {
+      XvdiStopVideo(NULL, pPort, pPort->pDraw);
+    }
+
+  pPort->grab.client = client;
+  pPort->grab.id = id;
+
+  pPort->time = currentTime;
+
+  *p_result = Success;
+
+  return Success;
+
+}
+
+int
+XvdiUngrabPort(
+  ClientPtr client,
+  XvPortPtr pPort,
+  Time ctime
+){
+  TimeStamp time;
+
+  UpdateCurrentTime();
+  time = ClientTimeToServerTime(ctime);
+
+  if ((!pPort->grab.client) || (client != pPort->grab.client))
+    {
+      return Success;
+    }
+
+  if ((CompareTimeStamps(time, currentTime) == LATER) ||
+      (CompareTimeStamps(time, pPort->time) == EARLIER))
+    {
+      return Success;
+    }
+
+  /* FREE THE GRAB RESOURCE; AND SET THE GRAB CLIENT TO NULL */
+
+  FreeResource(pPort->grab.id, XvRTGrab);
+  pPort->grab.client = NULL;
+
+  pPort->time = currentTime;
+
+  return Success;
+
+}
+
+
+int
+XvdiSelectVideoNotify(
+  ClientPtr client,
+  DrawablePtr pDraw,
+  BOOL onoff
+){
+  XvVideoNotifyPtr pn,tpn,fpn;
+  int rc;
+
+  /* FIND VideoNotify LIST */
+
+  rc = dixLookupResourceByType((pointer *)&pn, pDraw->id, XvRTVideoNotifyList,
+			       client, DixWriteAccess);
+  if (rc != Success && rc != BadValue)
+      return rc;
+
+  /* IF ONE DONES'T EXIST AND NO MASK, THEN JUST RETURN */
+
+  if (!onoff && !pn) return Success;
+
+  /* IF ONE DOESN'T EXIST CREATE IT AND ADD A RESOURCE SO THAT THE LIST
+     WILL BE DELETED WHEN THE DRAWABLE IS DESTROYED */
+
+  if (!pn) 
+    {
+      if (!(tpn = malloc(sizeof(XvVideoNotifyRec))))
+	return BadAlloc;
+      tpn->next = NULL;
+      if (!AddResource(pDraw->id, XvRTVideoNotifyList, tpn))
+	{
+	  free(tpn);
+	  return BadAlloc;
+	}
+    }
+  else
+    {
+      /* LOOK TO SEE IF ENTRY ALREADY EXISTS */
+
+      fpn = NULL;
+      tpn = pn;
+      while (tpn)
+	{
+	  if (tpn->client == client) 
+	    {
+	      if (!onoff) tpn->client = NULL;
+	      return Success;
+	    }
+	  if (!tpn->client) fpn = tpn; /* TAKE NOTE OF FREE ENTRY */
+	  tpn = tpn->next;
+	}
+
+      /* IF TUNNING OFF, THEN JUST RETURN */
+
+      if (!onoff) return Success;
+
+      /* IF ONE ISN'T FOUND THEN ALLOCATE ONE AND LINK IT INTO THE LIST */
+
+      if (fpn)
+	{
+	  tpn = fpn;
+	}
+      else
+	{
+	  if (!(tpn = malloc(sizeof(XvVideoNotifyRec))))
+	    return BadAlloc;
+	  tpn->next = pn->next;
+	  pn->next = tpn;
+	}
+    }
+
+  /* INIT CLIENT PTR IN CASE WE CAN'T ADD RESOURCE */
+  /* ADD RESOURCE SO THAT IF CLIENT EXITS THE CLIENT PTR WILL BE CLEARED */
+
+  tpn->client = NULL;
+  tpn->id = FakeClientID(client->index);
+  AddResource(tpn->id, XvRTVideoNotify, tpn);
+
+  tpn->client = client;
+  return Success;
+
+}
+
+int
+XvdiSelectPortNotify(
+   ClientPtr client,
+   XvPortPtr pPort,
+   BOOL onoff
+){
+  XvPortNotifyPtr pn,tpn;
+
+  /* SEE IF CLIENT IS ALREADY IN LIST */
+
+  tpn = NULL;
+  pn = pPort->pNotify;
+  while (pn)
+    {
+      if (!pn->client) tpn = pn; /* TAKE NOTE OF FREE ENTRY */
+      if (pn->client == client) break;
+      pn = pn->next;
+    }
+
+  /* IS THE CLIENT ALREADY ON THE LIST? */
+
+  if (pn)
+    {
+      /* REMOVE IT? */
+
+      if (!onoff)
+	{
+	  pn->client = NULL;
+	  FreeResource(pn->id, XvRTPortNotify);
+	}
+
+      return Success;
+    }
+
+  /* DIDN'T FIND IT; SO REUSE LIST ELEMENT IF ONE IS FREE OTHERWISE 
+     CREATE A NEW ONE AND ADD IT TO THE BEGINNING OF THE LIST */
+
+  if (!tpn)
+    {
+      if (!(tpn = malloc(sizeof(XvPortNotifyRec))))
+	return BadAlloc;
+      tpn->next = pPort->pNotify;
+      pPort->pNotify = tpn;
+    }
+
+  tpn->client = client;
+  tpn->id = FakeClientID(client->index);
+  AddResource(tpn->id, XvRTPortNotify, tpn);
+
+  return Success;
+
+}
+
+int
+XvdiStopVideo(
+  ClientPtr client,
+  XvPortPtr pPort,
+  DrawablePtr pDraw
+){
+  int status;
+
+  /* IF PORT ISN'T ACTIVE THEN WE'RE DONE */
+
+  if (!pPort->pDraw || (pPort->pDraw != pDraw)) 
+    {
+      XvdiSendVideoNotify(pPort, pDraw, XvStopped);
+      return Success;
+    }
+
+  /* CHECK FOR GRAB; IF THIS CLIENT DOESN'T HAVE THE PORT GRABBED THEN
+     INFORM CLIENT OF ITS FAILURE */
+
+  if ((client) && (pPort->grab.client) && (pPort->grab.client != client))
+    {
+      XvdiSendVideoNotify(pPort, pDraw, XvBusy);
+      return Success;
+    }
+
+  XvdiSendVideoNotify(pPort, pDraw, XvStopped);
+
+  status = (* pPort->pAdaptor->ddStopVideo)(client, pPort, pDraw);
+
+  pPort->pDraw = NULL;
+  pPort->client = (ClientPtr)client;
+  pPort->time = currentTime;
+
+  return status;
+
+}
+
+int
+XvdiPreemptVideo(
+  ClientPtr client,
+  XvPortPtr pPort,
+  DrawablePtr pDraw
+){
+  int status;
+
+  /* IF PORT ISN'T ACTIVE THEN WE'RE DONE */
+
+  if (!pPort->pDraw || (pPort->pDraw != pDraw)) return Success;
+
+  XvdiSendVideoNotify(pPort, pPort->pDraw, XvPreempted);
+
+  status = (* pPort->pAdaptor->ddStopVideo)(client, pPort, pPort->pDraw);
+
+  pPort->pDraw = NULL;
+  pPort->client = (ClientPtr)client;
+  pPort->time = currentTime;
+
+  return status;
+
+}
+
+int
+XvdiMatchPort(
+  XvPortPtr pPort,
+  DrawablePtr pDraw
+){
+
+  XvAdaptorPtr pa;
+  XvFormatPtr pf;
+  int nf;
+
+  pa = pPort->pAdaptor;
+
+  if (pa->pScreen != pDraw->pScreen) return BadMatch;
+
+  nf = pa->nFormats;
+  pf = pa->pFormats;
+
+  while (nf--)
+    {
+      if ((pf->depth == pDraw->depth) 
+#if 0
+         && ((pDraw->type == DRAWABLE_PIXMAP) || 
+	   (wVisual(((WindowPtr)pDraw)) == pf->visual))
+#endif
+	)
+	return Success;
+      pf++;
+    }
+
+  return BadMatch;
+
+}
+
+int
+XvdiSetPortAttribute(
+  ClientPtr client,
+  XvPortPtr pPort,
+  Atom attribute,
+  INT32 value
+){
+  int status;
+
+  status = (* pPort->pAdaptor->ddSetPortAttribute)(client, pPort, attribute, value);
+  if (status == Success)
+    XvdiSendPortNotify(pPort, attribute, value);
+
+  return status;
+}
+
+int
+XvdiGetPortAttribute(
+  ClientPtr client,
+  XvPortPtr pPort,
+  Atom attribute,
+  INT32 *p_value
+){
+
+  return 
+    (* pPort->pAdaptor->ddGetPortAttribute)(client, pPort, attribute, p_value);
+
+}
+
+static void
+WriteSwappedVideoNotifyEvent(xvEvent *from, xvEvent *to)
+
+{
+
+  to->u.u.type = from->u.u.type;
+  to->u.u.detail = from->u.u.detail;
+  cpswaps(from->u.videoNotify.sequenceNumber, 
+	  to->u.videoNotify.sequenceNumber);
+  cpswapl(from->u.videoNotify.time, to->u.videoNotify.time);
+  cpswapl(from->u.videoNotify.drawable, to->u.videoNotify.drawable);
+  cpswapl(from->u.videoNotify.port, to->u.videoNotify.port);
+
+}
+
+static void
+WriteSwappedPortNotifyEvent(xvEvent *from, xvEvent *to)
+
+{
+
+  to->u.u.type = from->u.u.type;
+  to->u.u.detail = from->u.u.detail;
+  cpswaps(from->u.portNotify.sequenceNumber, to->u.portNotify.sequenceNumber);
+  cpswapl(from->u.portNotify.time, to->u.portNotify.time);
+  cpswapl(from->u.portNotify.port, to->u.portNotify.port);
+  cpswapl(from->u.portNotify.value, to->u.portNotify.value);
+
+}