ipa: raspberrypi: Rename header files from *.hpp to *.h

As per the libcamera coding guidelines, rename all .hpp header files to .h.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/ipa/raspberrypi/controller/contrast_algorithm.h

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi (Trading) Limited
+ *
+ * contrast_algorithm.h - contrast (gamma) control algorithm interface
+ */
+#pragma once
+
+#include "algorithm.h"
+
+namespace RPiController {
+
+class ContrastAlgorithm : public Algorithm
+{
+public:
+	ContrastAlgorithm(Controller *controller) : Algorithm(controller) {}
+	/* A contrast algorithm must provide the following: */
+	virtual void setBrightness(double brightness) = 0;
+	virtual void setContrast(double contrast) = 0;
+};
+
+} /* namespace RPiController */