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, 64 deletions

diff --git a/src/ipa/raspberrypi/controller/histogram.cpp b/src/ipa/raspberrypi/controller/histogram.cpp
deleted file mode 100644
index 16a9207f..00000000
--- a/src/ipa/raspberrypi/controller/histogram.cpp
+++ /dev/null
@@ -1,64 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2019, Raspberry Pi Ltd
- *
- * histogram.cpp - histogram calculations
- */
-#include <math.h>
-#include <stdio.h>
-
-#include "histogram.h"
-
-using namespace RPiController;
-
-uint64_t Histogram::cumulativeFreq(double bin) const
-{
-	if (bin <= 0)
-		return 0;
-	else if (bin >= bins())
-		return total();
-	int b = (int)bin;
-	return cumulative_[b] +
-	       (bin - b) * (cumulative_[b + 1] - cumulative_[b]);
-}
-
-double Histogram::quantile(double q, int first, int last) const
-{
-	if (first == -1)
-		first = 0;
-	if (last == -1)
-		last = cumulative_.size() - 2;
-	assert(first <= last);
-	uint64_t items = q * total();
-	while (first < last) /* binary search to find the right bin */
-	{
-		int middle = (first + last) / 2;
-		if (cumulative_[middle + 1] > items)
-			last = middle; /* between first and middle */
-		else
-			first = middle + 1; /* after middle */
-	}
-	assert(items >= cumulative_[first] && items <= cumulative_[last + 1]);
-	double frac = cumulative_[first + 1] == cumulative_[first] ? 0
-		      : (double)(items - cumulative_[first]) /
-				  (cumulative_[first + 1] - cumulative_[first]);
-	return first + frac;
-}
-
-double Histogram::interQuantileMean(double qLo, double qHi) const
-{
-	assert(qHi > qLo);
-	double pLo = quantile(qLo);
-	double pHi = quantile(qHi, (int)pLo);
-	double sumBinFreq = 0, cumulFreq = 0;
-	for (double pNext = floor(pLo) + 1.0; pNext <= ceil(pHi);
-	     pLo = pNext, pNext += 1.0) {
-		int bin = floor(pLo);
-		double freq = (cumulative_[bin + 1] - cumulative_[bin]) *
-			      (std::min(pNext, pHi) - pLo);
-		sumBinFreq += bin * freq;
-		cumulFreq += freq;
-	}
-	/* add 0.5 to give an average for bin mid-points */
-	return sumBinFreq / cumulFreq + 0.5;
-}