From fd720fbf641b2c4b07bd4249563b95b2949b313f Mon Sep 17 00:00:00 2001
From: Ming Qian <ming.qian@nxp.com>
Date: Tue, 22 Aug 2023 09:57:14 +0800
Subject: [PATCH] v4l2object: clear format lists if source change event is
 received

If decoder notify a source change event when the capture format is
changed, not the resolution changed.

then gst_v4l2_object_acquire_format will retuen false due to
unsupported format.

we need to clear the format lists in the source change flow,
and reenumerate format list

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5218>
---
 subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c b/subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c
index ea5e1c9ff2..62a812d145 100644
--- a/subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c
+++ b/subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c
@@ -5709,6 +5709,9 @@ again:
       goto again;
     }
 
+    if (v4l2object->formats)
+      gst_v4l2_object_clear_format_list (v4l2object);
+
     return GST_V4L2_FLOW_RESOLUTION_CHANGE;
   }