test: v4l2_subdevice: Add format handling test

Add test for video format get and set operations on V4L2Subdevice class.

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/test/v4l2_subdevice/v4l2_subdevice_test.cpp b/test/v4l2_subdevice/v4l2_subdevice_test.cpp
new file mode 100644
index 00000000..06582969
--- /dev/null
+++ b/test/v4l2_subdevice/v4l2_subdevice_test.cpp
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * v4l2_subdevice_test.cpp - VIMC-based V4L2 subdevice test
+ */
+
+#include <iostream>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "device_enumerator.h"
+#include "media_device.h"
+#include "v4l2_subdevice.h"
+#include "v4l2_subdevice_test.h"
+
+using namespace std;
+using namespace libcamera;
+
+/*
+ * This test runs on vimc media device. For a description of vimc, in the
+ * context of libcamera testing, please refer to
+ * 'test/media_device/media_device_link_test.cpp' file.
+ *
+ * If the vimc module is not loaded, the test gets skipped.
+ */
+
+int V4L2SubdeviceTest::init()
+{
+	enumerator_ = DeviceEnumerator::create();
+	if (!enumerator_) {
+		cerr << "Failed to create device enumerator" << endl;
+		return TestFail;
+	}
+
+	if (enumerator_->enumerate()) {
+		cerr << "Failed to enumerate media devices" << endl;
+		return TestFail;
+	}
+
+	DeviceMatch dm("vimc");
+	media_ = std::move(enumerator_->search(dm));
+	if (!media_) {
+		cerr << "Unable to find \'vimc\' media device node" << endl;
+		return TestSkip;
+	}
+
+	media_->acquire();
+
+	int ret = media_->open();
+	if (ret) {
+		cerr << "Unable to open media device: " << media_->deviceNode()
+		     << ": " << strerror(ret) << endl;
+		media_->release();
+		return TestSkip;
+	}
+
+	MediaEntity *videoEntity = media_->getEntityByName("Scaler");
+	if (!videoEntity) {
+		cerr << "Unable to find media entity 'Scaler'" << endl;
+		media_->release();
+		return TestFail;
+	}
+
+	scaler_ = new V4L2Subdevice(videoEntity);
+	ret = scaler_->open();
+	if (ret) {
+		cerr << "Unable to open video subdevice "
+		     << scaler_->deviceNode() << endl;
+		media_->release();
+		return TestSkip;
+	}
+
+	return 0;
+}
+
+void V4L2SubdeviceTest::cleanup()
+{
+	media_->release();
+
+	delete scaler_;
+}