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, 0 insertions, 92 deletions

diff --git a/src/ipa/raspberrypi/controller/rpi/sharpen.cpp b/src/ipa/raspberrypi/controller/rpi/sharpen.cpp
deleted file mode 100644
index 4f6f020a..00000000
--- a/src/ipa/raspberrypi/controller/rpi/sharpen.cpp
+++ /dev/null
@@ -1,92 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2019, Raspberry Pi Ltd
- *
- * sharpen.cpp - sharpening control algorithm
- */
-
-#include <math.h>
-
-#include <libcamera/base/log.h>
-
-#include "../sharpen_status.h"
-
-#include "sharpen.h"
-
-using namespace RPiController;
-using namespace libcamera;
-
-LOG_DEFINE_CATEGORY(RPiSharpen)
-
-#define NAME "rpi.sharpen"
-
-Sharpen::Sharpen(Controller *controller)
-	: SharpenAlgorithm(controller), userStrength_(1.0)
-{
-}
-
-char const *Sharpen::name() const
-{
-	return NAME;
-}
-
-void Sharpen::switchMode(CameraMode const &cameraMode,
-			 [[maybe_unused]] Metadata *metadata)
-{
-	/* can't be less than one, right? */
-	modeFactor_ = std::max(1.0, cameraMode.noiseFactor);
-}
-
-int Sharpen::read(const libcamera::YamlObject &params)
-{
-	threshold_ = params["threshold"].get<double>(1.0);
-	strength_ = params["strength"].get<double>(1.0);
-	limit_ = params["limit"].get<double>(1.0);
-	LOG(RPiSharpen, Debug)
-		<< "Read threshold " << threshold_
-		<< " strength " << strength_
-		<< " limit " << limit_;
-	return 0;
-}
-
-void Sharpen::setStrength(double strength)
-{
-	/*
-	 * Note that this function is how an application sets the overall
-	 * sharpening "strength". We call this the "user strength" field
-	 * as there already is a strength_ field - being an internal gain
-	 * parameter that gets passed to the ISP control code. Negative
-	 * values are not allowed - coerce them to zero (no sharpening).
-	 */
-	userStrength_ = std::max(0.0, strength);
-}
-
-void Sharpen::prepare(Metadata *imageMetadata)
-{
-	/*
-	 * The userStrength_ affects the algorithm's internal gain directly, but
-	 * we adjust the limit and threshold less aggressively. Using a sqrt
-	 * function is an arbitrary but gentle way of accomplishing this.
-	 */
-	double userStrengthSqrt = sqrt(userStrength_);
-	struct SharpenStatus status;
-	/*
-	 * Binned modes seem to need the sharpening toned down with this
-	 * pipeline, thus we use the modeFactor_ here. Also avoid
-	 * divide-by-zero with the userStrengthSqrt.
-	 */
-	status.threshold = threshold_ * modeFactor_ /
-			   std::max(0.01, userStrengthSqrt);
-	status.strength = strength_ / modeFactor_ * userStrength_;
-	status.limit = limit_ / modeFactor_ * userStrengthSqrt;
-	/* Finally, report any application-supplied parameters that were used. */
-	status.userStrength = userStrength_;
-	imageMetadata->set("sharpen.status", status);
-}
-
-/* Register algorithm with the system. */
-static Algorithm *create(Controller *controller)
-{
-	return new Sharpen(controller);
-}
-static RegisterAlgorithm reg(NAME, &create);