tests: Add negotiation tests for the interlace elements

Many complicated cases exist. Would be good to have some checks.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2062>

1 files changed, 216 insertions, 0 deletions

diff --git a/tests/check/elements/interlace.c b/tests/check/elements/interlace.c
new file mode 100644
index 000000000..f19d7a1e6
--- /dev/null
+++ b/tests/check/elements/interlace.c
@@ -0,0 +1,216 @@
+/* GStreamer
+ * unit test for interlace
+ *
+ * Copyright (C) 2021 Vivia Nikolaidou <vivia at ahiru dot eu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include <gst/check/gstcheck.h>
+#include <gst/check/gstharness.h>
+#include <gst/video/video.h>
+
+GST_START_TEST (test_passthrough)
+{
+  GstBuffer *buffer;
+  GstHarness *h;
+
+  h = gst_harness_new ("interlace");
+
+  gst_harness_set (h, "interlace", "field-pattern", 1, "top-field-first", TRUE,
+      NULL);
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=interleaved,field-order=top-field-first,format=AYUV,height=1,width=1,framerate=1/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer), GST_FLOW_OK);
+
+  gst_harness_set (h, "interlace", "field-pattern", 1, "top-field-first", FALSE,
+      NULL);
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=interleaved,field-order=bottom-field-first,format=AYUV,width=1,height=1,framerate=1/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer), GST_FLOW_OK);
+
+  gst_harness_teardown (h);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_reject_passthrough_mixed)
+{
+  GstHarness *h;
+  GstBuffer *buffer;
+
+  h = gst_harness_new ("interlace");
+  gst_harness_play (h);
+
+  gst_harness_set (h, "interlace", "field-pattern", 3, NULL);
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=mixed,format=AYUV,width=1,height=1,framerate=1/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer),
+      GST_FLOW_NOT_NEGOTIATED);
+
+  gst_harness_teardown (h);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_field_switch)
+{
+  GstHarness *h;
+  GstBuffer *buffer;
+
+  h = gst_harness_new ("interlace");
+
+  gst_harness_set (h, "interlace", "field-pattern", 1, "top-field-first", FALSE,
+      NULL);
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=interleaved,field-order=top-field-first,format=AYUV,width=1,height=1,framerate=1/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer), GST_FLOW_OK);
+
+  gst_harness_set (h, "interlace", "field-pattern", 1, "top-field-first", TRUE,
+      NULL);
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=interleaved,field-order=bottom-field-first,format=AYUV,width=1,height=1,framerate=1/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer), GST_FLOW_OK);
+
+  gst_harness_teardown (h);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_framerate_2_2)
+{
+  GstHarness *h;
+  GstBuffer *buffer;
+
+  h = gst_harness_new ("interlace");
+
+  gst_harness_set (h, "interlace", "field-pattern", 1, "top-field-first", TRUE,
+      NULL);
+  gst_harness_set_sink_caps_str (h, "video/x-raw,framerate=1/1");
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=progressive,format=AYUV,width=1,height=1,framerate=1/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer), GST_FLOW_OK);
+
+  gst_harness_set_sink_caps_str (h, "video/x-raw,framerate=1/1");
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=progressive,format=AYUV,width=1,height=1,framerate=2/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer),
+      GST_FLOW_NOT_NEGOTIATED);
+
+  gst_harness_teardown (h);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_framerate_1_1)
+{
+  GstHarness *h;
+  GstBuffer *buffer;
+
+  h = gst_harness_new ("interlace");
+
+  gst_harness_set (h, "interlace", "field-pattern", 0, "top-field-first", TRUE,
+      NULL);
+  gst_harness_set_sink_caps_str (h, "video/x-raw,framerate=1/1");
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=progressive,format=AYUV,width=1,height=1,framerate=1/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer),
+      GST_FLOW_NOT_NEGOTIATED);
+
+  gst_harness_set_sink_caps_str (h, "video/x-raw,framerate=1/1");
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=progressive,format=AYUV,width=1,height=1,framerate=2/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer), GST_FLOW_OK);
+
+  gst_harness_teardown (h);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_framerate_3_2)
+{
+  GstHarness *h;
+  GstBuffer *buffer;
+
+  h = gst_harness_new ("interlace");
+
+  gst_harness_set (h, "interlace", "field-pattern", 2, NULL);
+  gst_harness_set_sink_caps_str (h, "video/x-raw,framerate=30/1");
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=progressive,format=AYUV,width=1,height=1,framerate=24/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer), GST_FLOW_OK);
+
+  gst_harness_set_sink_caps_str (h, "video/x-raw,framerate=1/1");
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=progressive,format=AYUV,width=1,height=1,framerate=1/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer),
+      GST_FLOW_NOT_NEGOTIATED);
+
+  gst_harness_teardown (h);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_framerate_empty_not_negotiated)
+{
+  GstHarness *h;
+  GstBuffer *buffer;
+
+  h = gst_harness_new ("interlace");
+
+  gst_harness_set_sink_caps_str (h, "EMPTY");
+  gst_harness_set_src_caps_str (h,
+      "video/x-raw,interlace-mode=progressive,format=AYUV,width=1,height=1,framerate=24/1");
+  buffer = gst_harness_create_buffer (h, 4);
+  fail_unless_equals_int (gst_harness_push (h, buffer),
+      GST_FLOW_NOT_NEGOTIATED);
+
+  gst_harness_teardown (h);
+}
+
+GST_END_TEST;
+
+static Suite *
+interlace_suite (void)
+{
+  Suite *s = suite_create ("interlace");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+
+  tcase_add_test (tc_chain, test_passthrough);
+  tcase_add_test (tc_chain, test_reject_passthrough_mixed);
+  tcase_add_test (tc_chain, test_field_switch);
+  tcase_add_test (tc_chain, test_framerate_2_2);
+  tcase_add_test (tc_chain, test_framerate_1_1);
+  tcase_add_test (tc_chain, test_framerate_3_2);
+  tcase_add_test (tc_chain, test_framerate_empty_not_negotiated);
+
+  return s;
+}
+
+GST_CHECK_MAIN (interlace);