opencv: add cvtracker plugin

This adds an object tracker plugin.
Tracker implementations from https://docs.opencv.org/3.4/d0/d0a/classcv_1_1Tracker.html

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2454>

4 files changed, 132 insertions, 0 deletions

diff --git a/tests/meson.build b/tests/meson.build
index 145551993..3364f7ba6 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,6 +1,7 @@
 if not get_option('tests').disabled() and gstcheck_dep.found()
   subdir('check')
   subdir('icles')
+  subdir('validate')
 endif
 if not get_option('examples').disabled()
   subdir('examples')
diff --git a/tests/validate/meson.build b/tests/validate/meson.build
new file mode 100644
index 000000000..fd154e3ea
--- /dev/null
+++ b/tests/validate/meson.build
@@ -0,0 +1,29 @@
+gst_tester = find_program('gst-tester-@0@'.format(api_version), required: get_option('tests'))
+if not gst_tester.found()
+    subdir_done()
+endif
+
+tests = [
+    'opencv/cvtracker'
+]
+
+env = environment()
+env.set('GST_PLUGIN_PATH_1_0', meson.build_root(), pluginsdirs)
+env.set('GST_PLUGIN_SYSTEM_PATH_1_0', '')
+env.set('GST_REGISTRY', '@0@/@1@.registry'.format(meson.current_build_dir(), 'validate'))
+env.set('GST_PLUGIN_SCANNER_1_0', gst_plugin_scanner_path)
+env.set('GST_PLUGIN_LOADING_WHITELIST', 'gstreamer', 'gst-validate', 'gst-plugins-base',
+    'gst-plugins-bad@' + meson.build_root())
+
+foreach t: tests
+    test_dir_name = t.split('/')
+    test_name = 'validate'
+    foreach c: test_dir_name
+        test_name += '.' + c
+    endforeach
+    test_env = env
+    test_env.set('GST_VALIDATE_LOGSDIR', join_paths(meson.current_build_dir(), test_name))
+    test_file = join_paths(meson.current_source_dir(), t + '.validatetest')
+    test(test_name, gst_tester, args: [test_file, '--use-fakesinks'],
+        env: test_env, timeout : 3 * 60, protocol: 'tap')
+endforeach
diff --git a/tests/validate/opencv/cvtracker.validatetest b/tests/validate/opencv/cvtracker.validatetest
new file mode 100644
index 000000000..7005200fc
--- /dev/null
+++ b/tests/validate/opencv/cvtracker.validatetest
@@ -0,0 +1,8 @@
+meta,
+    args = {
+        "videotestsrc pattern=ball animation-mode=frames num-buffers=90 ! video/x-raw,framerate=30/1,width=320,height=240 ! cvtracker name=tracker object-initial-x=135 object-initial-y=95 object-initial-width=50 object-initial-height=50 algorithm=1 ! videoconvert ! $(videosink) sync=true",
+    },
+    configs = {
+       "$(validateflow), pad=tracker:src, record-buffers=true",
+    }
+crank-clock, repeat=91
\ No newline at end of file
diff --git a/tests/validate/opencv/cvtracker/flow-expectations/log-tracker-src-expected b/tests/validate/opencv/cvtracker/flow-expectations/log-tracker-src-expected
new file mode 100644
index 000000000..4c8a4dab0
--- /dev/null
+++ b/tests/validate/opencv/cvtracker/flow-expectations/log-tracker-src-expected
@@ -0,0 +1,94 @@
+event stream-start: GstEventStreamStart, flags=(GstStreamFlags)GST_STREAM_FLAG_NONE, group-id=(uint)1;
+event caps: video/x-raw, format=(string)RGB, framerate=(fraction)30/1, height=(int)240, interlace-mode=(string)progressive, multiview-mode=(string)mono, pixel-aspect-ratio=(fraction)1/1, width=(int)320;
+event segment: format=TIME, start=0:00:00.000000000, offset=0:00:00.000000000, stop=none, time=0:00:00.000000000, base=0:00:00.000000000, position=0:00:00.000000000
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