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, 53 deletions

diff --git a/src/ipa/raspberrypi/controller/histogram.h b/src/ipa/raspberrypi/controller/histogram.h
deleted file mode 100644
index 6b3e3a9e..00000000
--- a/src/ipa/raspberrypi/controller/histogram.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2019, Raspberry Pi Ltd
- *
- * histogram.h - histogram calculation interface
- */
-#pragma once
-
-#include <stdint.h>
-#include <vector>
-#include <cassert>
-
-/*
- * A simple histogram class, for use in particular to find "quantiles" and
- * averages between "quantiles".
- */
-
-namespace RPiController {
-
-class Histogram
-{
-public:
-	Histogram()
-	{
-		cumulative_.push_back(0);
-	}
-
-	template<typename T> Histogram(T *histogram, int num)
-	{
-		assert(num);
-		cumulative_.reserve(num + 1);
-		cumulative_.push_back(0);
-		for (int i = 0; i < num; i++)
-			cumulative_.push_back(cumulative_.back() +
-					      histogram[i]);
-	}
-	uint32_t bins() const { return cumulative_.size() - 1; }
-	uint64_t total() const { return cumulative_[cumulative_.size() - 1]; }
-	/* Cumulative frequency up to a (fractional) point in a bin. */
-	uint64_t cumulativeFreq(double bin) const;
-	/*
-	 * Return the (fractional) bin of the point q (0 <= q <= 1) through the
-	 * histogram. Optionally provide limits to help.
-	 */
-	double quantile(double q, int first = -1, int last = -1) const;
-	/* Return the average histogram bin value between the two quantiles. */
-	double interQuantileMean(double qLo, double qHi) const;
-
-private:
-	std::vector<uint64_t> cumulative_;
-};
-
-} /* namespace RPiController */