commit 641aa42530ad4f34698c18c5c10223b55204746c
author sheng.liu <sheng.liu@amlogic.com> Tue Dec 26 07:05:59 2023 +0000
committer sheng.liu <sheng.liu@amlogic.com> Fri Jan 12 08:40:26 2024 +0000
tree b5f79dc90ddfb5e9a9c10f734e26340f7465394b
parent 07337c81a25175e63a1ae29cfe84aa160b3380d3

gst-plugin-aml-v4l2dec: get PAR from decoder and set it to caps. [1/2]

PD#SWPL-149833

Problem:
Caps have un-correct pixel_aspect_ratio

Solution:
get PAR from decoder and set it to caps

Verify:
AH212

Change-Id: I51fcf209dfbf458e5437360aed3fbceb5fbc792a
Signed-off-by: sheng.liu <sheng.liu@amlogic.com>

src/gstamlv4l2videodec.c

diff --git a/src/gstamlv4l2videodec.c b/src/gstamlv4l2videodec.c
index ba6ef4c..9598a0a 100644
--- a/src/gstamlv4l2videodec.c
+++ b/src/gstamlv4l2videodec.c
@@ -1562,6 +1562,7 @@
     {
         GstCaps *caps;
         GstStructure *structure;
+        gint num, denom;
 
         gst_event_parse_caps (event, &caps);
         structure= gst_caps_get_structure(caps, 0);
@@ -1574,6 +1575,26 @@
                 GST_DEBUG("frame parsed:%d, set stream_mode to %d", parsed, self->v4l2output->stream_mode);
             }
         }
+
+        if (( gst_structure_get_fraction( structure, "pixel-aspect-ratio", &num, &denom ) ) &&
+            ( !self->v4l2capture->have_set_par ) )
+        {
+            if ( (num <= 0) || (denom <= 0) )
+            {
+                num= denom= 1;
+            }
+
+            if ( self->v4l2capture->par )
+            {
+                g_value_unset(self->v4l2capture->par);
+                g_free(self->v4l2capture->par);
+            }
+
+            self->v4l2capture->par = g_new0(GValue, 1);
+            g_value_init(self->v4l2capture->par, GST_TYPE_FRACTION);
+            gst_value_set_fraction(self->v4l2capture->par, num, denom);
+            GST_DEBUG_OBJECT(self, "get pixel aspect ratio %d:%d",  num, denom);
+        }
         break;
     }
     case GST_EVENT_FLUSH_START: