[FFmpeg-cvslog] avdevice/xcbgrab: check xcb_query_pointer_reply_t pointer before use
Michael Niedermayer
git at videolan.org
Tue Dec 9 02:25:44 CET 2014
ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Dec 9 01:54:51 2014 +0100| [e86df0206f06b8d1e97e2b60db8f74a398d53127] | committer: Michael Niedermayer
avdevice/xcbgrab: check xcb_query_pointer_reply_t pointer before use
Fixes CID1254668
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e86df0206f06b8d1e97e2b60db8f74a398d53127
---
libavdevice/xcbgrab.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/libavdevice/xcbgrab.c b/libavdevice/xcbgrab.c
index f2b9135..ca85186 100644
--- a/libavdevice/xcbgrab.c
+++ b/libavdevice/xcbgrab.c
@@ -106,12 +106,17 @@ static int xcbgrab_reposition(AVFormatContext *s,
xcb_get_geometry_reply_t *geo)
{
XCBGrabContext *c = s->priv_data;
- int x = c->x, y = c->y, p_x = p->win_x, p_y = p->win_y;
+ int x, y, p_x, p_y;
int w = c->width, h = c->height, f = c->follow_mouse;
if (!p || !geo)
return AVERROR(EIO);
+ x = c->x;
+ y = c->y;
+ p_x = p->win_x;
+ p_y = p->win_y;
+
if (f == FOLLOW_CENTER) {
x = p_x - w / 2;
y = p_y - h / 2;
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