vaapipostproc: append frame size restrictions in caps

gst-libs/gst/vaapi/gstvaapifilter.c

@@ -1699,6 +1699,43 @@ gst_vaapi_filter_set_format (GstVaapiFilter * filter, GstVideoFormat format)
   return TRUE;
 }
 
+/**
+ * gst_vaapi_filter_append_caps:
+ * @filter: a #GstVaapiFilter
+ * @structure: a #GstStructure from #GstCaps
+ *
+ * Extracts the config's surface attributes, from @filter's context,
+ * and transforms it into a caps formats and appended them into
+ * @structure.
+ *
+ * Returns: %TRUE if the capabilities could be extracted and appended
+ * into @structure; otherwise %FALSE
+ **/
+gboolean
+gst_vaapi_filter_append_caps (GstVaapiFilter * filter, GstStructure * structure)
+{
+  GstVaapiConfigSurfaceAttributes *attribs;
+
+  g_return_val_if_fail (filter != NULL, FALSE);
+  g_return_val_if_fail (structure != NULL, FALSE);
+
+  if (!ensure_attributes (filter))
+    return FALSE;
+
+  attribs = filter->attribs;
+
+  if (attribs->min_width >= attribs->max_width ||
+      attribs->min_height >= attribs->max_height)
+    return FALSE;
+
+  gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, attribs->min_width,
+      attribs->max_width, "height", GST_TYPE_INT_RANGE, attribs->min_height,
+      attribs->max_height, NULL);
+
+  return TRUE;
+
+}
+
 /**
  * gst_vaapi_filter_set_cropping_rectangle:
  * @filter: a #GstVaapiFilter

gst-libs/gst/vaapi/gstvaapifilter.h

@@ -210,6 +210,9 @@ gst_vaapi_filter_get_formats (GstVaapiFilter * filter);
 gboolean
 gst_vaapi_filter_set_format (GstVaapiFilter * filter, GstVideoFormat format);
 
+gboolean
+gst_vaapi_filter_append_caps (GstVaapiFilter * filter, GstStructure * structure);
+
 gboolean
 gst_vaapi_filter_set_cropping_rectangle (GstVaapiFilter * filter,
     const GstVaapiRectangle * rect);

gst/vaapi/gstvaapipostproc.c

@@ -1103,6 +1103,7 @@ static gboolean
 ensure_allowed_sinkpad_caps (GstVaapiPostproc * postproc)
 {
   GstCaps *out_caps, *raw_caps;
+  guint i, num_structures;
 
   if (postproc->allowed_sinkpad_caps)
     return TRUE;
@@ -1128,6 +1129,18 @@ ensure_allowed_sinkpad_caps (GstVaapiPostproc * postproc)
 
   out_caps = gst_caps_make_writable (out_caps);
   gst_caps_append (out_caps, gst_caps_copy (raw_caps));
+
+  num_structures = gst_caps_get_size (out_caps);
+  for (i = 0; i < num_structures; i++) {
+    GstStructure *structure;
+
+    structure = gst_caps_get_structure (out_caps, i);
+    if (!structure)
+      continue;
+
+    gst_vaapi_filter_append_caps (postproc->filter, structure);
+  }
+
   postproc->allowed_sinkpad_caps = out_caps;
 
   /* XXX: append VA/VPP filters */
@@ -1160,15 +1173,18 @@ expand_allowed_srcpad_caps (GstVaapiPostproc * postproc, GstCaps * caps)
     GstCapsFeatures *const features = gst_caps_get_features (caps, i);
     GstStructure *structure;
 
+    structure = gst_caps_get_structure (caps, i);
+    if (!structure)
+      continue;
+
+    gst_vaapi_filter_append_caps (postproc->filter, structure);
+
     if (gst_caps_features_contains (features,
             GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META)) {
       gl_upload_meta_idx = i;
       continue;
     }
 
-    structure = gst_caps_get_structure (caps, i);
-    if (!structure)
-      continue;
     gst_structure_set_value (structure, "format", &value);
   }
   g_value_unset (&value);