[libcamera-devel] [PATCH v1] test: gstreamer: Add minimal validation of camera output

[Vedant Paranjape]

Read stats property of fakesink which has Sink Statistics, It is
expected to be a non-zero number after running gstreamer element
for two seconds.

Signed-off-by: Vedant Paranjape <vedantparanjape160201 at gmail.com>
---
> I would like some minimal validation. I would expect that after 2s some frames
> got "rendered" properly. You can read the GstStructure property "stats" from
> fakevideosink / fakesink, and read the "rendered" field. Make sure this not zero
> perhaps ?

This change was suggested by Nicolas Dufresne <nicolas at ndufresne.ca> in the
mailing list 
---
 test/gstreamer/gstreamer_single_stream_test.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/gstreamer/gstreamer_single_stream_test.cpp b/test/gstreamer/gstreamer_single_stream_test.cpp
index 4c8d4804..5d56e762 100644
--- a/test/gstreamer/gstreamer_single_stream_test.cpp
+++ b/test/gstreamer/gstreamer_single_stream_test.cpp
@@ -134,8 +134,15 @@ protected:
 		g_autoptr(GstBus) bus = gst_element_get_bus(pipeline_);
 		g_autoptr(GstMessage) msg = gst_bus_timed_pop_filtered(bus, timeout, msgType);
 
+		gint sinkStats;
+		g_object_get(sink0_, "stats", &sinkStats, NULL);
+
 		gst_element_set_state(pipeline_, GST_STATE_NULL);
 
+		if (sinkStats <= 0) {
+			return TestFail;
+		}
+
 		/* Parse error message */
 		if (msg == NULL)
 			return TestPass;
-- 
2.25.1