[PATCHv2] Use screen privates for Xv offscreen images.
Jamey Sharp
jamey at minilop.net
Thu Apr 22 21:41:00 PDT 2010
This replaces a globally-allocated array that depended on MAXSCREENS.
Signed-off-by: Jamey Sharp <jamey at minilop.net>
---
On Thu, Apr 22, 2010 at 11:29 AM, Vignatti Tiago (Nokia-D/Helsinki) <tiago.vignatti at nokia.com> wrote:
> On Thu, Apr 22, 2010 at 07:42:56PM +0200, Vignatti Tiago (Nokia-D/Helsinki) wrote:
>> PS: there's a bug in your xv patch that I'm trying to track down now.
>
> Haven't had time to see this today, Jamey. But the problem is that
> xf86XVRegisterOffscreenImages is being called before ScreenPriv be allocated
> (done after, inside xf86XVScreenInit).
So it is. Oops. Apparently I don't have any hardware that tests this
code. How about this version instead? I've at least read the callers
more carefully now.
hw/xfree86/common/xf86xv.c | 24 +++++++++++++++---------
1 files changed, 15 insertions(+), 9 deletions(-)
diff --git a/hw/xfree86/common/xf86xv.c b/hw/xfree86/common/xf86xv.c
index bdcc4fc..1503502 100644
--- a/hw/xfree86/common/xf86xv.c
+++ b/hw/xfree86/common/xf86xv.c
@@ -186,7 +186,9 @@ typedef struct {
int num;
} OffscreenImageRec;
-static OffscreenImageRec OffscreenImages[MAXSCREENS];
+static int OffscreenPrivateKeyIndex;
+static DevPrivateKey OffscreenPrivateKey = &OffscreenPrivateKeyIndex;
+#define GetOffscreenImage(pScreen) ((OffscreenImageRec *) dixLookupPrivate(&(pScreen)->devPrivates, OffscreenPrivateKey))
Bool
xf86XVRegisterOffscreenImages(
@@ -194,9 +196,15 @@ xf86XVRegisterOffscreenImages(
XF86OffscreenImagePtr images,
int num
){
- OffscreenImages[pScreen->myNum].num = num;
- OffscreenImages[pScreen->myNum].images = images;
-
+ OffscreenImageRec *OffscreenImage;
+ if(!dixRequestPrivate(OffscreenPrivateKey, sizeof(OffscreenImageRec)) ||
+ !(OffscreenImage = GetOffscreenImage(pScreen)))
+ /* Every X.org driver assumes this function always succeeds, so
+ * just die on allocation failure. */
+ FatalError("Could not allocate private storage for XV offscreen images.\n");
+
+ OffscreenImage->num = num;
+ OffscreenImage->images = images;
return TRUE;
}
@@ -205,8 +213,9 @@ xf86XVQueryOffscreenImages(
ScreenPtr pScreen,
int *num
){
- *num = OffscreenImages[pScreen->myNum].num;
- return OffscreenImages[pScreen->myNum].images;
+ OffscreenImageRec *OffscreenImage = GetOffscreenImage(pScreen);
+ *num = OffscreenImage->num;
+ return OffscreenImage->images;
}
@@ -1177,9 +1186,6 @@ xf86XVCloseScreen(int i, ScreenPtr pScreen)
XvAdaptorPtr pa;
int c;
- /* Clear offscreen images */
- memset(&OffscreenImages[pScreen->myNum], 0, sizeof(OffscreenImages[0]));
-
if(!ScreenPriv) return TRUE;
if(ScreenPriv->videoGC) {
--
1.7.0
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