[libcamera-devel] [PATCH v3 2/2] test: pipeline: IPU3: Add IPU3 pipeline test

[Jacopo Mondi]

Add test for the Intel IPU3 pipeline that lists all the cameras
registered in the system and verifies the result matches the expected.

This test is meant to be run on IPU3 platforms, it gets skipped
otherwise.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 test/meson.build                          |   3 +
 test/pipeline/ipu3/ipu3_pipeline_test.cpp | 140 ++++++++++++++++++++++
 test/pipeline/ipu3/meson.build            |  11 ++
 test/pipeline/meson.build                 |   1 +
 4 files changed, 155 insertions(+)
 create mode 100644 test/pipeline/ipu3/ipu3_pipeline_test.cpp
 create mode 100644 test/pipeline/ipu3/meson.build
 create mode 100644 test/pipeline/meson.build

diff --git a/test/meson.build b/test/meson.build
index fb6b115..594082a 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -1,6 +1,9 @@
 subdir('libtest')
 
 subdir('media_device')
+
+subdir('pipeline')
+
 subdir('v4l2_device')
 
 public_tests = [
diff --git a/test/pipeline/ipu3/ipu3_pipeline_test.cpp b/test/pipeline/ipu3/ipu3_pipeline_test.cpp
new file mode 100644
index 0000000..deaee40
--- /dev/null
+++ b/test/pipeline/ipu3/ipu3_pipeline_test.cpp
@@ -0,0 +1,140 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2018, Google Inc.
+ *
+ * ipu3_pipeline_test.cpp - Intel IPU3 pipeline test
+ */
+
+#include <iostream>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <libcamera/camera.h>
+#include <libcamera/camera_manager.h>
+
+#include "media_device.h"
+#include "media_object.h"
+#include "test.h"
+
+using namespace std;
+using namespace libcamera;
+
+/*
+ * Verify that the Intel IPU3 pipeline handler gets matched and cameras
+ * are enumerated correctly.
+ *
+ * The test is supposed to be run on an IPU3 platform, otherwise it gets
+ * skipped.
+ *
+ * The test lists all cameras registered in the system, if any camera is
+ * available at all.
+ */
+class IPU3PipelineTest : public Test
+{
+protected:
+	int init();
+	int run();
+	void cleanup();
+
+private:
+	CameraManager *cameraManager_;
+	unsigned int sensors_;
+};
+
+int IPU3PipelineTest::init()
+{
+	const string devnode("/dev/media");
+	bool cio2 = false;
+	bool imgu = false;
+	unsigned int i;
+	int ret;
+
+	sensors_ = 0;
+
+	/*
+	 * Test all media devices from /dev/media0 to /dev/media256.
+	 * Media device numbering might not be continue, and we cannot stop
+	 * as soon as we hit a non accessible media device.
+	 */
+	for (i = 0; i < 256; i++) {
+		string mediadev = devnode + to_string(i);
+		struct stat pstat = { };
+
+		if (stat(mediadev.c_str(), &pstat))
+			continue;
+
+		MediaDevice dev(mediadev);
+		if (dev.open()) {
+			cerr << "Failed to open media device " << mediadev << endl;
+			return TestFail;
+		}
+
+		if (dev.driver() == "ipu3-imgu") {
+			imgu = true;
+		} else if (dev.driver() == "ipu3-cio2") {
+			/*
+			 * Camera sensor are connected to the CIO2 unit.
+			 * Count how many sensors are connected in the system
+			 * and later verify this matches the number of registered
+			 * cameras.
+			 */
+			ret = dev.populate();
+			if (ret) {
+				cerr << "Failed to populate media device " << dev.devnode() << endl;
+				return TestFail;
+			}
+
+			vector<MediaEntity *> entities = dev.entities();
+			for (MediaEntity *entity : entities) {
+				if (entity->function() == MEDIA_ENT_F_CAM_SENSOR)
+					sensors_++;
+			}
+
+			cio2 = true;
+		}
+
+		dev.close();
+
+		if (imgu && cio2)
+			break;
+	}
+
+	/* Not running on an IPU3 system: skip test. */
+	if (!(imgu && cio2))
+		return TestSkip;
+
+	cameraManager_ = CameraManager::instance();
+	ret = cameraManager_->start();
+	if (ret) {
+		cerr << "Failed to start the CameraManager" << endl;
+		return TestFail;
+	}
+
+	return 0;
+}
+
+int IPU3PipelineTest::run()
+{
+	unsigned int cameras = 0;
+	for (const shared_ptr<Camera> &cam : cameraManager_->cameras()) {
+		cout << "Found camera '" << cam->name() << "'" << endl;
+		cameras++;
+	}
+
+	if (cameras != sensors_) {
+		cerr << cameras << " cameras registered, but " << sensors_
+		     << " were expected" << endl;
+		return TestFail;
+	}
+
+	return TestPass;
+}
+
+void IPU3PipelineTest::cleanup()
+{
+	cameraManager_->stop();
+}
+
+TEST_REGISTER(IPU3PipelineTest)
diff --git a/test/pipeline/ipu3/meson.build b/test/pipeline/ipu3/meson.build
new file mode 100644
index 0000000..caba5c7
--- /dev/null
+++ b/test/pipeline/ipu3/meson.build
@@ -0,0 +1,11 @@
+ipu3_test = [
+    ['ipu3_pipeline_test',	      'ipu3_pipeline_test.cpp'],
+]
+
+foreach t : ipu3_test
+    exe = executable(t[0], t[1],
+                     link_with : test_libraries,
+                     include_directories : test_includes_internal)
+
+    test(t[0], exe, suite: 'ipu3', is_parallel: false)
+endforeach
diff --git a/test/pipeline/meson.build b/test/pipeline/meson.build
new file mode 100644
index 0000000..f434c79
--- /dev/null
+++ b/test/pipeline/meson.build
@@ -0,0 +1 @@
+subdir('ipu3')
-- 
2.20.1