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, 75 insertions, 0 deletions

diff --git a/src/ipa/rpi/controller/rpi/ccm.h b/src/ipa/rpi/controller/rpi/ccm.h
new file mode 100644
index 00000000..286d0b33
--- /dev/null
+++ b/src/ipa/rpi/controller/rpi/ccm.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi Ltd
+ *
+ * ccm.h - CCM (colour correction matrix) control algorithm
+ */
+#pragma once
+
+#include <vector>
+
+#include "../ccm_algorithm.h"
+#include "../pwl.h"
+
+namespace RPiController {
+
+/* Algorithm to calculate colour matrix. Should be placed after AWB. */
+
+struct Matrix {
+	Matrix(double m0, double m1, double m2, double m3, double m4, double m5,
+	       double m6, double m7, double m8);
+	Matrix();
+	double m[3][3];
+	int read(const libcamera::YamlObject &params);
+};
+static inline Matrix operator*(double d, Matrix const &m)
+{
+	return Matrix(m.m[0][0] * d, m.m[0][1] * d, m.m[0][2] * d,
+		      m.m[1][0] * d, m.m[1][1] * d, m.m[1][2] * d,
+		      m.m[2][0] * d, m.m[2][1] * d, m.m[2][2] * d);
+}
+static inline Matrix operator*(Matrix const &m1, Matrix const &m2)
+{
+	Matrix m;
+	for (int i = 0; i < 3; i++)
+		for (int j = 0; j < 3; j++)
+			m.m[i][j] = m1.m[i][0] * m2.m[0][j] +
+				    m1.m[i][1] * m2.m[1][j] +
+				    m1.m[i][2] * m2.m[2][j];
+	return m;
+}
+static inline Matrix operator+(Matrix const &m1, Matrix const &m2)
+{
+	Matrix m;
+	for (int i = 0; i < 3; i++)
+		for (int j = 0; j < 3; j++)
+			m.m[i][j] = m1.m[i][j] + m2.m[i][j];
+	return m;
+}
+
+struct CtCcm {
+	double ct;
+	Matrix ccm;
+};
+
+struct CcmConfig {
+	std::vector<CtCcm> ccms;
+	Pwl saturation;
+};
+
+class Ccm : public CcmAlgorithm
+{
+public:
+	Ccm(Controller *controller = NULL);
+	char const *name() const override;
+	int read(const libcamera::YamlObject &params) override;
+	void setSaturation(double saturation) override;
+	void initialise() override;
+	void prepare(Metadata *imageMetadata) override;
+
+private:
+	CcmConfig config_;
+	double saturation_;
+};
+
+} /* namespace RPiController */