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{
    "id": 21253,
    "url": "https://patchwork.libcamera.org/api/patches/21253/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/21253/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
        "list_email": "libcamera-devel@lists.libcamera.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<20240913075750.35115-5-stefan.klug@ideasonboard.com>",
    "date": "2024-09-13T07:57:22",
    "name": "[v2,4/9] ipa: rkisp1: Remove MatrixInterpolator",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "eb72d3bf5124b88b72d1af463cbf00a89457c1c2",
    "submitter": {
        "id": 184,
        "url": "https://patchwork.libcamera.org/api/people/184/?format=api",
        "name": "Stefan Klug",
        "email": "stefan.klug@ideasonboard.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/21253/mbox/",
    "series": [
        {
            "id": 4587,
            "url": "https://patchwork.libcamera.org/api/series/4587/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4587",
            "date": "2024-09-13T07:57:18",
            "name": "Implement polynomial lsc support",
            "version": 2,
            "mbox": "https://patchwork.libcamera.org/series/4587/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/21253/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/21253/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
        "X-Original-To": "parsemail@patchwork.libcamera.org",
        "Delivered-To": "parsemail@patchwork.libcamera.org",
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            "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 24765C324C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri, 13 Sep 2024 07:58:09 +0000 (UTC)",
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        ],
        "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"I5koErmD\"; dkim-atps=neutral",
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        "From": "Stefan Klug <stefan.klug@ideasonboard.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Cc": "Stefan Klug <stefan.klug@ideasonboard.com>",
        "Subject": "[PATCH v2 4/9] ipa: rkisp1: Remove MatrixInterpolator",
        "Date": "Fri, 13 Sep 2024 09:57:22 +0200",
        "Message-ID": "<20240913075750.35115-5-stefan.klug@ideasonboard.com>",
        "X-Mailer": "git-send-email 2.43.0",
        "In-Reply-To": "<20240913075750.35115-1-stefan.klug@ideasonboard.com>",
        "References": "<20240913075750.35115-1-stefan.klug@ideasonboard.com>",
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        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
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        "List-Id": "<libcamera-devel.lists.libcamera.org>",
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        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "The MatrixInterpolator is no longer used. Remove it.\n\nSigned-off-by: Stefan Klug <stefan.klug@ideasonboard.com>\n---\n src/ipa/libipa/matrix_interpolator.cpp | 103 ---------------------\n src/ipa/libipa/matrix_interpolator.h   | 120 -------------------------\n src/ipa/libipa/meson.build             |   2 -\n 3 files changed, 225 deletions(-)\n delete mode 100644 src/ipa/libipa/matrix_interpolator.cpp\n delete mode 100644 src/ipa/libipa/matrix_interpolator.h",
    "diff": "diff --git a/src/ipa/libipa/matrix_interpolator.cpp b/src/ipa/libipa/matrix_interpolator.cpp\ndeleted file mode 100644\nindex d5188f8aa4e9..000000000000\n--- a/src/ipa/libipa/matrix_interpolator.cpp\n+++ /dev/null\n@@ -1,103 +0,0 @@\n-/* SPDX-License-Identifier: LGPL-2.1-or-later */\n-/*\n- * Copyright (C) 2024, Paul Elder <paul.elder@ideasonboard.com>\n- *\n- * Helper class for interpolating maps of matrices\n- */\n-#include \"matrix_interpolator.h\"\n-\n-#include <libcamera/base/log.h>\n-\n-/**\n- * \\file matrix_interpolator.h\n- * \\brief Helper class for interpolating maps of matrices\n- */\n-\n-namespace libcamera {\n-\n-LOG_DEFINE_CATEGORY(MatrixInterpolator)\n-\n-namespace ipa {\n-\n-/**\n- * \\class MatrixInterpolator\n- * \\brief Class for storing, retrieving, and interpolating matrices\n- * \\tparam T Type of numerical values to be stored in the matrices\n- * \\tparam R Number of rows in the matrices\n- * \\tparam C Number of columns in the matrices\n- *\n- * The main use case is to pass a map from color temperatures to corresponding\n- * matrices (eg. color correction), and then requesting a matrix for a specific\n- * color temperature. This class will abstract away the interpolation portion.\n- */\n-\n-/**\n- * \\fn MatrixInterpolator::MatrixInterpolator(const std::map<unsigned int, Matrix<T, R, C>> &matrices)\n- * \\brief Construct a matrix interpolator from a map of matrices\n- * \\param matrices Map from which to construct the matrix interpolator\n- */\n-\n-/**\n- * \\fn MatrixInterpolator::reset()\n- * \\brief Reset the matrix interpolator content to a single identity matrix\n- */\n-\n-/**\n- * \\fn int MatrixInterpolator<T, R, C>::readYaml()\n- * \\brief Initialize an MatrixInterpolator instance from yaml\n- * \\tparam T Type of data stored in the matrices\n- * \\tparam R Number of rows of the matrices\n- * \\tparam C Number of columns of the matrices\n- * \\param[in] yaml The yaml object that contains the map of unsigned integers to matrices\n- * \\param[in] key_name The name of the key in the yaml object\n- * \\param[in] matrix_name The name of the matrix in the yaml object\n- *\n- * The yaml object is expected to be a list of maps. Each map has two or more\n- * pairs: one of \\a key_name to the key value (usually color temperature), and\n- * one or more of \\a matrix_name to the matrix. This is a bit difficult to\n- * explain, so here is an example (in python, as it is easier to parse than\n- * yaml):\n- *       [\n- *               {\n- *                   'ct': 2860,\n- *                   'ccm': [ 2.12089, -0.52461, -0.59629,\n- *                           -0.85342,  2.80445, -0.95103,\n- *                           -0.26897, -1.14788,  2.41685 ],\n- *                   'offsets': [ 0, 0, 0 ]\n- *               },\n- *\n- *               {\n- *                   'ct': 2960,\n- *                   'ccm': [ 2.26962, -0.54174, -0.72789,\n- *                           -0.77008,  2.60271, -0.83262,\n- *                           -0.26036, -1.51254,  2.77289 ],\n- *                   'offsets': [ 0, 0, 0 ]\n- *               },\n- *\n- *               {\n- *                   'ct': 3603,\n- *                   'ccm': [ 2.18644, -0.66148, -0.52496,\n- *                           -0.77828,  2.69474, -0.91645,\n- *                           -0.25239, -0.83059,  2.08298 ],\n- *                   'offsets': [ 0, 0, 0 ]\n- *               },\n- *       ]\n- *\n- * In this case, \\a key_name would be 'ct', and \\a matrix_name can be either\n- * 'ccm' or 'offsets'. This way multiple matrix interpolators can be defined in\n- * one set of color temperature ranges in the tuning file, and they can be\n- * retrieved separately with the \\a matrix_name parameter.\n- *\n- * \\return Zero on success, negative error code otherwise\n- */\n-\n-/**\n- * \\fn Matrix<T, R, C> MatrixInterpolator<T, R, C>::get(unsigned int key)\n- * \\brief Retrieve a matrix from the list of matrices, interpolating if necessary\n- * \\param[in] key The unsigned integer key of the matrix to retrieve\n- * \\return The matrix corresponding to the color temperature\n- */\n-\n-} /* namespace ipa */\n-\n-} /* namespace libcamera */\ndiff --git a/src/ipa/libipa/matrix_interpolator.h b/src/ipa/libipa/matrix_interpolator.h\ndeleted file mode 100644\nindex afbce5386b06..000000000000\n--- a/src/ipa/libipa/matrix_interpolator.h\n+++ /dev/null\n@@ -1,120 +0,0 @@\n-/* SPDX-License-Identifier: LGPL-2.1-or-later */\n-/*\n- * Copyright (C) 2024, Paul Elder <paul.elder@ideasonboard.com>\n- *\n- * Helper class for interpolating maps of matrices\n- */\n-\n-#pragma once\n-\n-#include <map>\n-#include <string>\n-\n-#include <libcamera/base/log.h>\n-\n-#include \"libcamera/internal/yaml_parser.h\"\n-\n-#include \"matrix.h\"\n-\n-namespace libcamera {\n-\n-LOG_DECLARE_CATEGORY(MatrixInterpolator)\n-\n-namespace ipa {\n-\n-#ifndef __DOXYGEN__\n-template<typename T, unsigned int R, unsigned int C,\n-\t std::enable_if_t<std::is_arithmetic_v<T>> * = nullptr>\n-#else\n-template<typename T, unsigned int R, unsigned int C>\n-#endif /* __DOXYGEN__ */\n-class MatrixInterpolator\n-{\n-public:\n-\tMatrixInterpolator()\n-\t{\n-\t\treset();\n-\t}\n-\n-\tMatrixInterpolator(const std::map<unsigned int, Matrix<T, R, C>> &matrices)\n-\t{\n-\t\tfor (const auto &pair : matrices)\n-\t\t\tmatrices_[pair.first] = pair.second;\n-\t}\n-\n-\t~MatrixInterpolator() {}\n-\n-\tvoid reset()\n-\t{\n-\t\tmatrices_.clear();\n-\t\tmatrices_[0] = Matrix<T, R, C>::identity();\n-\t}\n-\n-\tint readYaml(const libcamera::YamlObject &yaml,\n-\t\t     const std::string &key_name,\n-\t\t     const std::string &matrix_name)\n-\t{\n-\t\tmatrices_.clear();\n-\n-\t\tif (!yaml.isList()) {\n-\t\t\tLOG(MatrixInterpolator, Error) << \"yaml object must be a list\";\n-\t\t\treturn -EINVAL;\n-\t\t}\n-\n-\t\tfor (const auto &value : yaml.asList()) {\n-\t\t\tunsigned int ct = std::stoul(value[key_name].get<std::string>(\"\"));\n-\t\t\tstd::optional<Matrix<T, R, C>> matrix =\n-\t\t\t\tvalue[matrix_name].get<Matrix<T, R, C>>();\n-\t\t\tif (!matrix) {\n-\t\t\t\tLOG(MatrixInterpolator, Error) << \"Failed to read matrix\";\n-\t\t\t\treturn -EINVAL;\n-\t\t\t}\n-\n-\t\t\tmatrices_[ct] = *matrix;\n-\n-\t\t\tLOG(MatrixInterpolator, Debug)\n-\t\t\t\t<< \"Read matrix '\" << matrix_name << \"' for key '\"\n-\t\t\t\t<< key_name << \"' \" << ct << \": \"\n-\t\t\t\t<< matrices_[ct].toString();\n-\t\t}\n-\n-\t\tif (matrices_.size() < 1) {\n-\t\t\tLOG(MatrixInterpolator, Error) << \"Need at least one matrix\";\n-\t\t\treturn -EINVAL;\n-\t\t}\n-\n-\t\treturn 0;\n-\t}\n-\n-\tMatrix<T, R, C> get(unsigned int ct)\n-\t{\n-\t\tASSERT(matrices_.size() > 0);\n-\n-\t\tif (matrices_.size() == 1 ||\n-\t\t    ct <= matrices_.begin()->first)\n-\t\t\treturn matrices_.begin()->second;\n-\n-\t\tif (ct >= matrices_.rbegin()->first)\n-\t\t\treturn matrices_.rbegin()->second;\n-\n-\t\tif (matrices_.find(ct) != matrices_.end())\n-\t\t\treturn matrices_[ct];\n-\n-\t\t/* The above four guarantee that this will succeed */\n-\t\tauto iter = matrices_.upper_bound(ct);\n-\t\tunsigned int ctUpper = iter->first;\n-\t\tunsigned int ctLower = (--iter)->first;\n-\n-\t\tdouble lambda = (ct - ctLower) / static_cast<double>(ctUpper - ctLower);\n-\t\tMatrix<T, R, C> ret =\n-\t\t\tlambda * matrices_[ctUpper] + (1.0 - lambda) * matrices_[ctLower];\n-\t\treturn ret;\n-\t}\n-\n-private:\n-\tstd::map<unsigned int, Matrix<T, R, C>> matrices_;\n-};\n-\n-} /* namespace ipa */\n-\n-} /* namespace libcamera */\ndiff --git a/src/ipa/libipa/meson.build b/src/ipa/libipa/meson.build\nindex 2c2712a7d252..3740178b2909 100644\n--- a/src/ipa/libipa/meson.build\n+++ b/src/ipa/libipa/meson.build\n@@ -9,7 +9,6 @@ libipa_headers = files([\n     'histogram.h',\n     'interpolator.h',\n     'matrix.h',\n-    'matrix_interpolator.h',\n     'module.h',\n     'pwl.h',\n     'vector.h',\n@@ -24,7 +23,6 @@ libipa_sources = files([\n     'histogram.cpp',\n     'interpolator.cpp',\n     'matrix.cpp',\n-    'matrix_interpolator.cpp',\n     'module.cpp',\n     'pwl.cpp',\n     'vector.cpp',\n",
    "prefixes": [
        "v2",
        "4/9"
    ]
}