From dc914ced69e1e619a944c7dcb940c25e195cd4f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel@tungstengraphics.com>
Date: Sun, 15 Oct 2006 16:48:59 +0200
Subject: [PATCH] Add per-drawable Xv colour key helper function.

This allows overlay Xv adaptors to work slightly better with compositing
managers.

Bump the video driver ABI minor so drivers only need to check for this at build
time.
(cherry picked from commit a232693c8c2a206aac47c07b133c071938204e0b)

Conflicts:

	hw/xfree86/common/xf86Module.h

Avoid picking up XInput ABI version change.
---
 hw/xfree86/common/xf86xv.c     | 66 ++++++++++++++++++++++++++++++++--
 hw/xfree86/common/xf86xv.h     |  3 ++
 hw/xfree86/common/xf86xvpriv.h |  1 +
 hw/xfree86/loader/xf86sym.c    |  1 +
 4 files changed, 68 insertions(+), 3 deletions(-)

diff --git a/hw/xfree86/common/xf86xv.c b/hw/xfree86/common/xf86xv.c
index 89cb6bac4..3e908b86a 100644
--- a/hw/xfree86/common/xf86xv.c
+++ b/hw/xfree86/common/xf86xv.c
@@ -974,6 +974,7 @@ xf86XVEnlistPortInWindow(WindowPtr pWin, XvPortRecPrivatePtr portPriv)
    if(!winPriv) {
 	winPriv = xalloc(sizeof(XF86XVWindowRec));
 	if(!winPriv) return BadAlloc;
+	memset(winPriv, 0, sizeof(XF86XVWindowRec));
 	winPriv->PortRec = portPriv;
 	winPriv->next = PrivRoot;
 	pWin->devPrivates[XF86XVWindowIndex].ptr = (pointer)winPriv;
@@ -1026,6 +1027,9 @@ xf86XVDestroyWindow(WindowPtr pWin)
 
      pPriv->pDraw = NULL;
      tmp = WinPriv;
+     if(WinPriv->pGC) {
+       FreeGC(WinPriv->pGC, 0);
+     }
      WinPriv = WinPriv->next;
      xfree(tmp);
   }
@@ -1118,6 +1122,8 @@ xf86XVClipNotify(WindowPtr pWin, int dx, int dy)
   while(WinPriv) {
      pPriv = WinPriv->PortRec;
 
+     if(!pPriv) goto next;
+ 
      if(pPriv->pCompositeClip && pPriv->FreeCompositeClip)
 	REGION_DESTROY(pScreen, pPriv->pCompositeClip);
 
@@ -1148,6 +1154,7 @@ xf86XVClipNotify(WindowPtr pWin, int dx, int dy)
 	}
      }
 
+next:
      pPrev = WinPriv;
      WinPriv = WinPriv->next;
   }
@@ -1739,9 +1746,13 @@ xf86XVPutImage(
      REGION_UNINIT(pScreen, &VPReg);
   }
 
-  if(portPriv->pDraw) {
+  /* If we are changing windows, unregister our port in the old window */
+  if(portPriv->pDraw && (portPriv->pDraw != pDraw))
      xf86XVRemovePortFromWindow((WindowPtr)(portPriv->pDraw), portPriv);
-  }
+
+  /* Register our port with the new window */
+  ret =  xf86XVEnlistPortInWindow((WindowPtr)pDraw, portPriv);
+  if(ret != Success) goto PUT_IMAGE_BAILOUT;
 
   if(!REGION_NOTEMPTY(pScreen, &ClipRegion)) {
      clippedAway = TRUE;
@@ -1772,7 +1783,6 @@ xf86XVPutImage(
   if((ret == Success) &&
 	(portPriv->AdaptorRec->flags & VIDEO_OVERLAID_IMAGES)) {
 
-     xf86XVEnlistPortInWindow((WindowPtr)pDraw, portPriv);
      portPriv->isOn = XV_ON;
      portPriv->pDraw = pDraw;
      portPriv->drw_x = drw_x;  portPriv->drw_y = drw_y;
@@ -1813,6 +1823,56 @@ xf86XVQueryImageAttributes(
 			format->id, width, height, pitches, offsets);
 }
 
+
+_X_EXPORT void
+xf86XVFillKeyHelperDrawable (DrawablePtr pDraw, CARD32 key, RegionPtr clipboxes)
+{
+   ScreenPtr pScreen = pDraw->pScreen;
+   WindowPtr pWin = (WindowPtr)pDraw;
+   XF86XVWindowPtr pPriv = GET_XF86XV_WINDOW(pWin);
+   GCPtr pGC = NULL;
+   XID pval[2];
+   BoxPtr pbox = REGION_RECTS(clipboxes);
+   int i, nbox = REGION_NUM_RECTS(clipboxes);
+   xRectangle *rects;
+
+   if(!xf86Screens[pScreen->myNum]->vtSema) return;
+
+   if(pPriv)
+      pGC = pPriv->pGC;
+
+   if(!pGC) {
+       int status;
+       pval[0] = key;
+       pval[1] = IncludeInferiors;
+       pGC = CreateGC(pDraw, GCForeground | GCSubwindowMode, pval, &status);
+       if(!pGC) return;
+       ValidateGC(pDraw, pGC);
+       if (pPriv) pPriv->pGC = pGC;
+   } else if (key != pGC->fgPixel){
+       pval[0] = key;
+       ChangeGC(pGC, GCForeground, pval);
+       ValidateGC(pDraw, pGC);
+   }
+
+   REGION_TRANSLATE(pDraw->pScreen, clipboxes, -pDraw->x, -pDraw->y);
+
+   rects = ALLOCATE_LOCAL(nbox * sizeof(xRectangle));
+
+   for(i = 0; i < nbox; i++, pbox++) {
+      rects[i].x = pbox->x1;
+      rects[i].y = pbox->y1;
+      rects[i].width = pbox->x2 - pbox->x1;
+      rects[i].height = pbox->y2 - pbox->y1;
+   }
+
+   (*pGC->ops->PolyFillRect)(pDraw, pGC, nbox, rects);
+
+   if (!pPriv) FreeGC(pGC, 0);
+
+   DEALLOCATE_LOCAL(rects);
+}
+
 _X_EXPORT void
 xf86XVFillKeyHelper (ScreenPtr pScreen, CARD32 key, RegionPtr clipboxes)
 {
diff --git a/hw/xfree86/common/xf86xv.h b/hw/xfree86/common/xf86xv.h
index e0feb57b8..817e2b994 100644
--- a/hw/xfree86/common/xf86xv.h
+++ b/hw/xfree86/common/xf86xv.h
@@ -232,6 +232,9 @@ void xf86XVFreeVideoAdaptorRec(XF86VideoAdaptorPtr ptr);
 void
 xf86XVFillKeyHelper (ScreenPtr pScreen, CARD32 key, RegionPtr clipboxes);
 
+void
+xf86XVFillKeyHelperDrawable (DrawablePtr pDraw, CARD32 key, RegionPtr clipboxes);
+
 Bool
 xf86XVClipVideoHelper(
     BoxPtr dst,
diff --git a/hw/xfree86/common/xf86xvpriv.h b/hw/xfree86/common/xf86xvpriv.h
index ced053679..e716c9c6a 100644
--- a/hw/xfree86/common/xf86xvpriv.h
+++ b/hw/xfree86/common/xf86xvpriv.h
@@ -80,6 +80,7 @@ typedef struct {
 typedef struct _XF86XVWindowRec{
    XvPortRecPrivatePtr PortRec;
    struct _XF86XVWindowRec *next;
+   GCPtr pGC;
 } XF86XVWindowRec, *XF86XVWindowPtr;
 
 #endif  /* _XF86XVPRIV_H_ */
diff --git a/hw/xfree86/loader/xf86sym.c b/hw/xfree86/loader/xf86sym.c
index 31039761f..09d6681a4 100644
--- a/hw/xfree86/loader/xf86sym.c
+++ b/hw/xfree86/loader/xf86sym.c
@@ -632,6 +632,7 @@ _X_HIDDEN void *xfree86LookupTab[] = {
     SYMFUNC(xf86XVAllocateVideoAdaptorRec)
     SYMFUNC(xf86XVFreeVideoAdaptorRec)
     SYMFUNC(xf86XVFillKeyHelper)
+    SYMFUNC(xf86XVFillKeyHelperDrawable)
     SYMFUNC(xf86XVClipVideoHelper)
     SYMFUNC(xf86XVCopyYUV12ToPacked)
     SYMFUNC(xf86XVCopyPacked)