[libcamera-devel] [PATCH v4 7/8] test: v4l2_subdevice: Add ListFormat test

[Jacopo Mondi]

Add test to list formats on a v4l2 subdevice.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 test/v4l2_subdevice/list_formats.cpp | 76 ++++++++++++++++++++++++++++
 test/v4l2_subdevice/meson.build      |  1 +
 2 files changed, 77 insertions(+)
 create mode 100644 test/v4l2_subdevice/list_formats.cpp

diff --git a/test/v4l2_subdevice/list_formats.cpp b/test/v4l2_subdevice/list_formats.cpp
new file mode 100644
index 000000000000..b40e1f124539
--- /dev/null
+++ b/test/v4l2_subdevice/list_formats.cpp
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * libcamera V4L2 Subdevice format handling test
+ */
+
+#include <iostream>
+#include <vector>
+
+#include "v4l2_subdevice.h"
+
+#include "v4l2_subdevice_test.h"
+
+using namespace std;
+using namespace libcamera;
+
+/* List image formats on the "Scaler" subdevice of vimc media device.  */
+
+class ListFormatsTest : public V4L2SubdeviceTest
+{
+protected:
+	int run();
+
+private:
+	void printFormats(unsigned int pad,
+			  std::vector<V4L2SubdeviceFormat> &formats);
+};
+
+void ListFormatsTest::printFormats(unsigned int pad,
+				   std::vector<V4L2SubdeviceFormat> &formats)
+{
+	cout << "Enumerate formats on pad " << pad << endl;
+	for (V4L2SubdeviceFormat &format : formats) {
+		cout << "	Mbus code: 0x" << hex << format.mbus_code << endl;
+		cout << "	Width: " << dec << format.width << endl;
+		cout << "	Height: " << dec << format.height << endl;
+	}
+}
+
+int ListFormatsTest::run()
+{
+	/* List all formats available on existing "Scaler" pads. */
+	std::vector<V4L2SubdeviceFormat> formats = {};
+
+	formats = scaler_->formats(0);
+	if (formats.empty()) {
+		cerr << "Failed to list formats on pad 0 of subdevice "
+		     << scaler_->deviceNode() << endl;
+		return TestFail;
+	}
+	printFormats(0, formats);
+
+	formats = {};
+	formats = scaler_->formats(1);
+	if (formats.empty()) {
+		cerr << "Failed to list formats on pad 1 of subdevice "
+		     << scaler_->deviceNode() << endl;
+		return TestFail;
+	}
+	printFormats(1, formats);
+
+	/* List format on a non-existing pad, format vector shall be empty. */
+	formats = {};
+	formats = scaler_->formats(2);
+	if (!formats.empty()) {
+		cerr << "Listing formats on non-existing pad 2 of subdevice "
+		     << scaler_->deviceNode()
+		     << " should return an empty format list" << endl;
+		return TestFail;
+	}
+
+	return TestPass;
+}
+
+TEST_REGISTER(ListFormatsTest);
diff --git a/test/v4l2_subdevice/meson.build b/test/v4l2_subdevice/meson.build
index a4359fe1bc19..6023d15e1558 100644
--- a/test/v4l2_subdevice/meson.build
+++ b/test/v4l2_subdevice/meson.build
@@ -1,4 +1,5 @@
 v4l2_subdevice_tests = [
+  [ 'list_formats',             'list_formats.cpp'],
   [ 'test_formats',             'test_formats.cpp'],
 ]
 
-- 
2.20.1