1 files changed, 14 insertions, 13 deletions

diff --git a/gst/frei0r/gstfrei0rfilter.c b/gst/frei0r/gstfrei0rfilter.c
index 43d8fc67..eda78adf 100644
--- a/gst/frei0r/gstfrei0rfilter.c
+++ b/gst/frei0r/gstfrei0rfilter.c
@@ -40,22 +40,11 @@ gst_frei0r_filter_set_caps (GstBaseTransform * trans, GstCaps * incaps,
     GstCaps * outcaps)
 {
   GstFrei0rFilter *self = GST_FREI0R_FILTER (trans);
-  GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (trans);
   GstVideoFormat fmt;
-  gint width, height;
 
-  if (!gst_video_format_parse_caps (incaps, &fmt, &width, &height))
+  if (!gst_video_format_parse_caps (incaps, &fmt, &self->width, &self->height))
     return FALSE;
 
-  if (self->f0r_instance) {
-    klass->ftable->destruct (self->f0r_instance);
-    self->f0r_instance = NULL;
-  }
-
-  self->f0r_instance =
-      gst_frei0r_instance_construct (klass->ftable, klass->properties,
-      klass->n_properties, self->property_cache, width, height);
-
   return TRUE;
 }
 
@@ -70,6 +59,8 @@ gst_frei0r_filter_stop (GstBaseTransform * trans)
     self->f0r_instance = NULL;
   }
 
+  self->width = self->height = 0;
+
   return TRUE;
 }
 
@@ -81,9 +72,17 @@ gst_frei0r_filter_transform (GstBaseTransform * trans, GstBuffer * inbuf,
   GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (trans);
   gdouble time;
 
-  if (!self->f0r_instance)
+  if (G_UNLIKELY (self->width <= 0 || self->height <= 0))
     return GST_FLOW_NOT_NEGOTIATED;
 
+  if (G_UNLIKELY (!self->f0r_instance)) {
+    self->f0r_instance =
+        gst_frei0r_instance_construct (klass->ftable, klass->properties,
+        klass->n_properties, self->property_cache, self->width, self->height);
+    if (G_UNLIKELY (!self->f0r_instance))
+      return GST_FLOW_ERROR;
+  }
+
   time = ((gdouble) GST_BUFFER_TIMESTAMP (inbuf)) / GST_SECOND;
 
   if (klass->ftable->update2)
@@ -195,6 +194,8 @@ gst_frei0r_filter_init (GstFrei0rFilter * self, GstFrei0rFilterClass * klass)
 {
   self->property_cache =
       gst_frei0r_property_cache_init (klass->properties, klass->n_properties);
+  gst_pad_use_fixed_caps (GST_BASE_TRANSFORM_SINK_PAD (self));
+  gst_pad_use_fixed_caps (GST_BASE_TRANSFORM_SRC_PAD (self));
 }
 
 gboolean