winegstreamer: Avoid zero division in amt_from_gst_caps_video().

Signed-off-by: Masanori Kakura <kakurasan@gmail.com> Signed-off-by: Andrew Eikum <aeikum@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

winegstreamer: Avoid zero division in amt_from_gst_caps_video().
442653b9 · Masanori Kakura · Alexandre Julliard · 55c5a77b · 442653b9
Commit 442653b9 authored Jan 25, 2017 by Masanori Kakura Committed by Alexandre Julliard Jan 25, 2017
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gstdemux.c dlls/winegstreamer/gstdemux.c +2 -3

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--- a/dlls/winegstreamer/gstdemux.c
+++ b/dlls/winegstreamer/gstdemux.c
@@ -233,9 +233,8 @@ static gboolean amt_from_gst_caps_video(GstCaps *caps, AM_MEDIA_TYPE *amt)
        bih->biCompression = amt->subtype.Data1;
    }
    bih->biSizeImage = width * height * bih->biBitCount / 8;
-    vih->AvgTimePerFrame = 10000000;
-    vih->AvgTimePerFrame *= denom;
-    vih->AvgTimePerFrame /= nom;
+    if ((vih->AvgTimePerFrame = (REFERENCE_TIME)MulDiv(10000000, denom, nom)) == -1)
+        vih->AvgTimePerFrame = 0; /* zero division or integer overflow */
    vih->rcSource.left = 0;
    vih->rcSource.right = width;
    vih->rcSource.top = height;