pipeline: ipa: raspberrypi: Refactor and move the Raspberry Pi code

Split the Raspberry Pi pipeline handler and IPA source code into common
and VC4/BCM2835 specific file structures.

For the pipeline handler, the common code files now live in
src/libcamera/pipeline/rpi/common/
and the VC4-specific files in src/libcamera/pipeline/rpi/vc4/.

For the IPA, the common code files now live in
src/ipa/rpi/{cam_helper,controller}/
and the vc4 specific files in src/ipa/rpi/vc4/. With this change, the
camera tuning files are now installed under share/libcamera/ipa/rpi/vc4/.

To build the pipeline and IPA, the meson configuration options have now
changed from "raspberrypi" to "rpi/vc4":

meson setup build -Dipas=rpi/vc4 -Dpipelines=rpi/vc4

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

1 files changed, 33 insertions, 0 deletions

diff --git a/src/ipa/rpi/controller/agc_algorithm.h b/src/ipa/rpi/controller/agc_algorithm.h
new file mode 100644
index 00000000..36e6c110
--- /dev/null
+++ b/src/ipa/rpi/controller/agc_algorithm.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi Ltd
+ *
+ * agc_algorithm.h - AGC/AEC control algorithm interface
+ */
+#pragma once
+
+#include <libcamera/base/utils.h>
+
+#include "algorithm.h"
+
+namespace RPiController {
+
+class AgcAlgorithm : public Algorithm
+{
+public:
+	AgcAlgorithm(Controller *controller) : Algorithm(controller) {}
+	/* An AGC algorithm must provide the following: */
+	virtual unsigned int getConvergenceFrames() const = 0;
+	virtual void setEv(double ev) = 0;
+	virtual void setFlickerPeriod(libcamera::utils::Duration flickerPeriod) = 0;
+	virtual void setFixedShutter(libcamera::utils::Duration fixedShutter) = 0;
+	virtual void setMaxShutter(libcamera::utils::Duration maxShutter) = 0;
+	virtual void setFixedAnalogueGain(double fixedAnalogueGain) = 0;
+	virtual void setMeteringMode(std::string const &meteringModeName) = 0;
+	virtual void setExposureMode(std::string const &exposureModeName) = 0;
+	virtual void setConstraintMode(std::string const &contraintModeName) = 0;
+	virtual void enableAuto() = 0;
+	virtual void disableAuto() = 0;
+};
+
+} /* namespace RPiController */