glcolorconver: Return empty caps in transform_caps if fails.
authorHe Junyan <junyan.he@intel.com>
Fri, 6 Nov 2020 08:18:14 +0000 (16:18 +0800)
committerHe Junyan <junyan.he@intel.com>
Thu, 3 Dec 2020 16:24:32 +0000 (00:24 +0800)
commitf7ea6d9b64282bb11a220f3ffe8c9e94baf83221
treead98c1da52030aa42856f6c7860e741027a7d52c
parent1146a7e3a0f74bf92b5d55e82c827d9862c29fdd
glcolorconver: Return empty caps in transform_caps if fails.

We should not return a NULL in transform_caps() function. The NULL
will generate a assert of:
  "transform_caps returned caps which are not a real subset of the
   filter caps"
in transform base class.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/922>
ext/gl/gstglcolorconvertelement.c