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geometrictransform: Prevent access to the transform map when it is null

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Check if the map doesn't exist when receiving a new caps and create
a new one. This prevents that the transform functions try to access
the map when it doesn't exist.
This commit is contained in:
Thiago Santos 2012-03-20 20:07:11 -03:00
parent 74471813eb
commit 7dd5b2002a
1 changed files with 6 additions and 2 deletions
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8
gst/geometrictransform/gstgeometrictransform.c
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@ -178,8 +178,8 @@ gst_geometric_transform_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
/* regenerate the map */
GST_OBJECT_LOCK (gt);
if (old_width == 0 || old_height == 0 || gt->width != old_width ||
gt->height != old_height) {
if (gt->map == NULL || old_width == 0 || old_height == 0
|| gt->width != old_width || gt->height != old_height) {
if (klass->prepare_func)
if (!klass->prepare_func (gt)) {
GST_OBJECT_UNLOCK (gt);
@ -352,6 +352,10 @@ gst_geometric_transform_stop (GstBaseTransform * trans)
GstGeometricTransform *gt = GST_GEOMETRIC_TRANSFORM_CAST (trans);
GST_INFO_OBJECT (gt, "Deleting transform map");
gt->width = 0;
gt->height = 0;
g_free (gt->map);
gt->map = NULL;