libipa: Drop Matrix classHEADmaster

There are no users of the libipa::Matrix class anymore. Drop it.

Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

3 files changed, 0 insertions, 354 deletions

diff --git a/src/ipa/libipa/matrix.cpp b/src/ipa/libipa/matrix.cpp
deleted file mode 100644
index 8346f0d3..00000000
--- a/src/ipa/libipa/matrix.cpp
+++ /dev/null
@@ -1,149 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2024, Paul Elder <paul.elder@ideasonboard.com>
- *
- * Matrix and related operations
- */
-
-#include "matrix.h"
-
-#include <libcamera/base/log.h>
-
-/**
- * \file matrix.h
- * \brief Matrix class
- */
-
-namespace libcamera {
-
-LOG_DEFINE_CATEGORY(Matrix)
-
-namespace ipa {
-
-/**
- * \class Matrix
- * \brief Matrix class
- * \tparam T Type of numerical values to be stored in the matrix
- * \tparam Rows Number of rows in the matrix
- * \tparam Cols Number of columns in the matrix
- */
-
-/**
- * \fn Matrix::Matrix()
- * \brief Construct a zero matrix
- */
-
-/**
- * \fn Matrix::Matrix(const std::vector<T> &data)
- * \brief Construct a matrix from supplied data
- * \param[in] data Data from which to construct a matrix
- *
- * \a data is a one-dimensional vector and will be turned into a matrix in
- * row-major order. The size of \a data must be equal to the product of the
- * number of rows and columns of the matrix (Rows x Cols).
- */
-
-/**
- * \fn Matrix::identity()
- * \brief Construct an identity matrix
- */
-
-/**
- * \fn Matrix::toString()
- * \brief Assemble and return a string describing the matrix
- * \return A string describing the matrix
- */
-
-/**
- * \fn Span<const T, Cols> Matrix::operator[](size_t i) const
- * \brief Index to a row in the matrix
- * \param[in] i Index of row to retrieve
- *
- * This operator[] returns a Span, which can then be indexed into again with
- * another operator[], allowing a convenient m[i][j] to access elements of the
- * matrix. Note that the lifetime of the Span returned by this first-level
- * operator[] is bound to that of the Matrix itself, so it is not recommended
- * to save the Span that is the result of this operator[].
- *
- * \return Row \a i from the matrix, as a Span
- */
-
-/**
- * \fn Matrix::operator[](size_t i)
- * \copydoc Matrix::operator[](size_t i) const
- */
-
-/**
- * \fn Matrix<T, Rows, Cols> &Matrix::operator*=(U d)
- * \brief Multiply the matrix by a scalar in-place
- * \tparam U Type of the numerical scalar value
- * \param d The scalar multiplier
- * \return Product of this matrix and scalar \a d
- */
-
-/**
- * \fn Matrix::Matrix<U, Rows, Cols> operator*(T d, const Matrix<U, Rows, Cols> &m)
- * \brief Multiply the matrix by a scalar
- * \tparam T Type of the numerical scalar value
- * \tparam U Type of numerical values in the matrix
- * \tparam Rows Number of rows in the matrix
- * \tparam Cols Number of columns in the matrix
- * \param d The scalar multiplier
- * \param m The matrix
- * \return Product of scalar \a d and matrix \a m
- */
-
-/**
- * \fn Matrix::Matrix<U, Rows, Cols> operator*(const Matrix<U, Rows, Cols> &m, T d)
- * \copydoc operator*(T d, const Matrix<U, Rows, Cols> &m)
- */
-
-/**
- * \fn Matrix<T, R1, C2> operator*(const Matrix<T, R1, C1> &m1, const Matrix<T, R2, C2> &m2)
- * \brief Matrix multiplication
- * \tparam T Type of numerical values in the matrices
- * \tparam R1 Number of rows in the first matrix
- * \tparam C1 Number of columns in the first matrix
- * \tparam R2 Number of rows in the second matrix
- * \tparam C2 Number of columns in the second matrix
- * \param m1 Multiplicand matrix
- * \param m2 Multiplier matrix
- * \return Matrix product of matrices \a m1 and \a m2
- */
-
-/**
- * \fn Matrix<T, Rows, Cols> operator+(const Matrix<T, Rows, Cols> &m1, const Matrix<T, Rows, Cols> &m2)
- * \brief Matrix addition
- * \tparam T Type of numerical values in the matrices
- * \tparam Rows Number of rows in the matrices
- * \tparam Cols Number of columns in the matrices
- * \param m1 Summand matrix
- * \param m2 Summand matrix
- * \return Matrix sum of matrices \a m1 and \a m2
- */
-
-#ifndef __DOXYGEN__
-/*
- * The YAML data shall be a list of numerical values. Its size shall be equal
- * to the product of the number of rows and columns of the matrix (Rows x
- * Cols). The values shall be stored in row-major order.
- */
-bool matrixValidateYaml(const YamlObject &obj, unsigned int size)
-{
-	if (!obj.isList())
-		return false;
-
-	if (obj.size() != size) {
-		LOG(Matrix, Error)
-			<< "Wrong number of values in matrix: expected "
-			<< size << ", got " << obj.size();
-		return false;
-	}
-
-	return true;
-}
-#endif /* __DOXYGEN__ */
-
-} /* namespace ipa */
-
-} /* namespace libcamera */
diff --git a/src/ipa/libipa/matrix.h b/src/ipa/libipa/matrix.h
deleted file mode 100644
index 5471e697..00000000
--- a/src/ipa/libipa/matrix.h
+++ /dev/null
@@ -1,203 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2024, Paul Elder <paul.elder@ideasonboard.com>
- *
- * Matrix and related operations
- */
-#pragma once
-
-#include <algorithm>
-#include <sstream>
-#include <vector>
-
-#include <libcamera/base/log.h>
-#include <libcamera/base/span.h>
-
-#include "libcamera/internal/yaml_parser.h"
-
-namespace libcamera {
-
-LOG_DECLARE_CATEGORY(Matrix)
-
-namespace ipa {
-
-#ifndef __DOXYGEN__
-template<typename T, unsigned int Rows, unsigned int Cols,
-	 std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
-#else
-template<typename T, unsigned int Rows, unsigned int Cols>
-#endif /* __DOXYGEN__ */
-class Matrix
-{
-public:
-	Matrix()
-	{
-		data_.fill(static_cast<T>(0));
-	}
-
-	Matrix(const std::vector<T> &data)
-	{
-		std::copy(data.begin(), data.end(), data_.begin());
-	}
-
-	static Matrix identity()
-	{
-		Matrix ret;
-		for (size_t i = 0; i < std::min(Rows, Cols); i++)
-			ret[i][i] = static_cast<T>(1);
-		return ret;
-	}
-
-	~Matrix() = default;
-
-	const std::string toString() const
-	{
-		std::stringstream out;
-
-		out << "Matrix { ";
-		for (unsigned int i = 0; i < Rows; i++) {
-			out << "[ ";
-			for (unsigned int j = 0; j < Cols; j++) {
-				out << (*this)[i][j];
-				out << ((j + 1 < Cols) ? ", " : " ");
-			}
-			out << ((i + 1 < Rows) ? "], " : "]");
-		}
-		out << " }";
-
-		return out.str();
-	}
-
-	Span<const T, Cols> operator[](size_t i) const
-	{
-		return Span<const T, Cols>{ &data_.data()[i * Cols], Cols };
-	}
-
-	Span<T, Cols> operator[](size_t i)
-	{
-		return Span<T, Cols>{ &data_.data()[i * Cols], Cols };
-	}
-
-#ifndef __DOXYGEN__
-	template<typename U, std::enable_if_t<std::is_arithmetic_v<U>>>
-#else
-	template<typename U>
-#endif /* __DOXYGEN__ */
-	Matrix<T, Rows, Cols> &operator*=(U d)
-	{
-		for (unsigned int i = 0; i < Rows * Cols; i++)
-			data_[i] *= d;
-		return *this;
-	}
-
-private:
-	std::array<T, Rows * Cols> data_;
-};
-
-#ifndef __DOXYGEN__
-template<typename T, typename U, unsigned int Rows, unsigned int Cols,
-	 std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
-#else
-template<typename T, typename U, unsigned int Rows, unsigned int Cols>
-#endif /* __DOXYGEN__ */
-Matrix<U, Rows, Cols> operator*(T d, const Matrix<U, Rows, Cols> &m)
-{
-	Matrix<U, Rows, Cols> result;
-
-	for (unsigned int i = 0; i < Rows; i++) {
-		for (unsigned int j = 0; j < Cols; j++)
-			result[i][j] = d * m[i][j];
-	}
-
-	return result;
-}
-
-#ifndef __DOXYGEN__
-template<typename T, typename U, unsigned int Rows, unsigned int Cols,
-	 std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>
-#else
-template<typename T, typename U, unsigned int Rows, unsigned int Cols>
-#endif /* __DOXYGEN__ */
-Matrix<U, Rows, Cols> operator*(const Matrix<U, Rows, Cols> &m, T d)
-{
-	return d * m;
-}
-
-#ifndef __DOXYGEN__
-template<typename T,
-	 unsigned int R1, unsigned int C1,
-	 unsigned int R2, unsigned int C2,
-	 std::enable_if_t<C1 == R2> * = nullptr>
-#else
-template<typename T, unsigned int R1, unsigned int C1, unsigned int R2, unsigned in C2>
-#endif /* __DOXYGEN__ */
-Matrix<T, R1, C2> operator*(const Matrix<T, R1, C1> &m1, const Matrix<T, R2, C2> &m2)
-{
-	Matrix<T, R1, C2> result;
-
-	for (unsigned int i = 0; i < R1; i++) {
-		for (unsigned int j = 0; j < C2; j++) {
-			T sum = 0;
-
-			for (unsigned int k = 0; k < C1; k++)
-				sum += m1[i][k] * m2[k][j];
-
-			result[i][j] = sum;
-		}
-	}
-
-	return result;
-}
-
-template<typename T, unsigned int Rows, unsigned int Cols>
-Matrix<T, Rows, Cols> operator+(const Matrix<T, Rows, Cols> &m1, const Matrix<T, Rows, Cols> &m2)
-{
-	Matrix<T, Rows, Cols> result;
-
-	for (unsigned int i = 0; i < Rows; i++) {
-		for (unsigned int j = 0; j < Cols; j++)
-			result[i][j] = m1[i][j] + m2[i][j];
-	}
-
-	return result;
-}
-
-#ifndef __DOXYGEN__
-bool matrixValidateYaml(const YamlObject &obj, unsigned int size);
-#endif /* __DOXYGEN__ */
-
-} /* namespace ipa */
-
-#ifndef __DOXYGEN__
-template<typename T, unsigned int Rows, unsigned int Cols>
-std::ostream &operator<<(std::ostream &out, const ipa::Matrix<T, Rows, Cols> &m)
-{
-	out << m.toString();
-	return out;
-}
-
-template<typename T, unsigned int Rows, unsigned int Cols>
-struct YamlObject::Getter<ipa::Matrix<T, Rows, Cols>> {
-	std::optional<ipa::Matrix<T, Rows, Cols>> get(const YamlObject &obj) const
-	{
-		if (!ipa::matrixValidateYaml(obj, Rows * Cols))
-			return std::nullopt;
-
-		ipa::Matrix<T, Rows, Cols> matrix;
-		T *data = &matrix[0][0];
-
-		unsigned int i = 0;
-		for (const YamlObject &entry : obj.asList()) {
-			const auto value = entry.get<T>();
-			if (!value)
-				return std::nullopt;
-
-			data[i++] = *value;
-		}
-
-		return matrix;
-	}
-};
-#endif /* __DOXYGEN__ */
-
-} /* namespace libcamera */
diff --git a/src/ipa/libipa/meson.build b/src/ipa/libipa/meson.build
index 788d037a..93ae25da 100644
--- a/src/ipa/libipa/meson.build
+++ b/src/ipa/libipa/meson.build
@@ -10,7 +10,6 @@ libipa_headers = files([
     'histogram.h',
     'interpolator.h',
     'lsc_polynomial.h',
-    'matrix.h',
     'module.h',
     'pwl.h',
     'vector.h',
@@ -26,7 +25,6 @@ libipa_sources = files([
     'histogram.cpp',
     'interpolator.cpp',
     'lsc_polynomial.cpp',
-    'matrix.cpp',
     'module.cpp',
     'pwl.cpp',
     'vector.cpp',