libcamera: Rename V4L2Device to V4L2VideoDevice

In preparation of creating a new V4L2Device base class, rename
V4L2Device to V4L2VideoDevice.

This is a project wide rename without any intended functional change.

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

test/v4l2_videodevice/request_buffers.cpp

@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * libcamera V4L2 API tests
+ */
+
+#include "v4l2_videodevice_test.h"
+
+class RequestBuffersTest : public V4L2VideoDeviceTest
+{
+public:
+	RequestBuffersTest()
+		: V4L2VideoDeviceTest("vimc", "Raw Capture 0") {}
+
+protected:
+	int run()
+	{
+		/*
+		 * TODO:
+		 *  Test invalid requests
+		 *  Test different buffer allocations
+		 */
+		const unsigned int bufferCount = 8;
+
+		pool_.createBuffers(bufferCount);
+
+		int ret = capture_->exportBuffers(&pool_);
+		if (ret)
+			return TestFail;
+
+		return TestPass;
+	}
+};
+
+TEST_REGISTER(RequestBuffersTest);