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, 32 insertions, 0 deletions

diff --git a/src/ipa/raspberrypi/md_parser_rpi.hpp b/src/ipa/raspberrypi/md_parser_rpi.hpp
new file mode 100644
index 00000000..1fa334f4
--- /dev/null
+++ b/src/ipa/raspberrypi/md_parser_rpi.hpp
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi (Trading) Limited
+ *
+ * md_parser_rpi.hpp - Raspberry Pi metadata parser interface
+ */
+#pragma once
+
+#include "md_parser.hpp"
+
+namespace RPi {
+
+class MdParserRPi : public MdParser
+{
+public:
+	MdParserRPi();
+	Status Parse(void *data) override;
+	Status GetExposureLines(unsigned int &lines) override;
+	Status GetGainCode(unsigned int &gain_code) override;
+
+private:
+	// This must be the same struct that is filled into the metadata buffer
+	// in the pipeline handler.
+	struct rpiMetadata
+	{
+		uint32_t exposure;
+		uint32_t gain;
+	};
+	rpiMetadata metadata;
+};
+
+}