gst-aml-drm-plugins: CB1 av1 caps lack framerate  [1/1]

PD#SWPL-133960

Problem:
av1_sec_trans drops framerate caps.

Solution:
add framerate caps in av1_sec_trans.

Verify:
Yocto T5W

Signed-off-by: le.han <le.han@amlogic.com>
Change-Id: I75534a5c16c9d9c47ec2a7a751fa41bd6f68f17f
diff --git a/gst-aml-drm-plugins-1.0/src/secure_parse/gstav1_sec_trans.c b/gst-aml-drm-plugins-1.0/src/secure_parse/gstav1_sec_trans.c
index ca4712f..b7d918b 100644
--- a/gst-aml-drm-plugins-1.0/src/secure_parse/gstav1_sec_trans.c
+++ b/gst-aml-drm-plugins-1.0/src/secure_parse/gstav1_sec_trans.c
@@ -131,7 +131,7 @@
     case GST_PAD_SINK:
     {
         if (gst_caps_can_intersect(caps, sinkcaps)) {
-            gint width, height;
+            gint width, height, num, denom;
             GstStructure *s = gst_structure_copy(gst_caps_get_structure (caps, 0));
 
             ret = gst_caps_copy(srccaps);
@@ -151,6 +151,12 @@
                 }
                 gst_caps_set_simple (ret, "height", G_TYPE_INT, height, NULL);
             }
+            if (s) {
+                if (gst_structure_has_field (s, "framerate")) {
+                    gst_structure_get_fraction( s, "framerate", &num, &denom );
+                    gst_caps_set_simple (ret, "framerate", GST_TYPE_FRACTION, num, denom, NULL);
+                }
+            }
         }
         unsigned size = gst_caps_get_size(ret);
         for (unsigned i = 0; i < size; ++i) {