libcamera: ipa: Raspberry Pi IPA

Initial implementation of the Raspberry Pi (BCM2835) libcamera IPA and
associated libraries.

All code is licensed under the BSD-2-Clause terms.
Copyright (c) 2019-2020 Raspberry Pi Trading Ltd.

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

1 files changed, 22 insertions, 0 deletions

diff --git a/src/ipa/raspberrypi/controller/contrast_algorithm.hpp b/src/ipa/raspberrypi/controller/contrast_algorithm.hpp
new file mode 100644
index 00000000..9780322b
--- /dev/null
+++ b/src/ipa/raspberrypi/controller/contrast_algorithm.hpp
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi (Trading) Limited
+ *
+ * contrast_algorithm.hpp - contrast (gamma) control algorithm interface
+ */
+#pragma once
+
+#include "algorithm.hpp"
+
+namespace RPi {
+
+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 RPi