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{
    "id": 19847,
    "url": "https://patchwork.libcamera.org/api/1.1/patches/19847/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/19847/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/1.1/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": "<20240405084050.1919105-2-paul.elder@ideasonboard.com>",
    "date": "2024-04-05T08:40:48",
    "name": "[v2,1/3] ipa: libipa: Add Matrix class",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "938573f862f26c2fc845bc48b4f612149e8e3ddb",
    "submitter": {
        "id": 17,
        "url": "https://patchwork.libcamera.org/api/1.1/people/17/?format=api",
        "name": "Paul Elder",
        "email": "paul.elder@ideasonboard.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/19847/mbox/",
    "series": [
        {
            "id": 4250,
            "url": "https://patchwork.libcamera.org/api/1.1/series/4250/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4250",
            "date": "2024-04-05T08:40:47",
            "name": "ipa: rkisp1: Add crosstalk algorithm",
            "version": 1,
            "mbox": "https://patchwork.libcamera.org/series/4250/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/19847/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/19847/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
        "X-Original-To": "parsemail@patchwork.libcamera.org",
        "Delivered-To": "parsemail@patchwork.libcamera.org",
        "Received": [
            "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id B2F3BC327C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri,  5 Apr 2024 08:41:04 +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=\"lT9b1yyj\"; dkim-atps=neutral",
        "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1712306423;\n\tbh=3sLXFY+CIq9OnanWJwj9mKYaRM2wcu5JPatEZem3R/k=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=lT9b1yyjFRoVs05dznfba6zU0DQs36nn9Hz2YINuORB82RZzZ2Db8O+C2znuJNxLs\n\tecStF8IyN06Eg1QrT/c6BgYU7giFLiQzJZORjXMUAPxEedy6ot5rHPhLnlfmuNFWrB\n\tUcKj0tas5QTT56xkNkZYDMKtawmNwlwtUj3IweQw=",
        "From": "Paul Elder <paul.elder@ideasonboard.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Cc": "Paul Elder <paul.elder@ideasonboard.com>",
        "Subject": "[PATCH v2 1/3] ipa: libipa: Add Matrix class",
        "Date": "Fri,  5 Apr 2024 17:40:48 +0900",
        "Message-Id": "<20240405084050.1919105-2-paul.elder@ideasonboard.com>",
        "X-Mailer": "git-send-email 2.39.2",
        "In-Reply-To": "<20240405084050.1919105-1-paul.elder@ideasonboard.com>",
        "References": "<20240405084050.1919105-1-paul.elder@ideasonboard.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
        "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>",
        "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>",
        "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>",
        "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>",
        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Add a class to represent a Matrix object and operations for adding\nmatrices, multipling a matrix by a scalar, and multiplying two matrices.\n\nSigned-off-by: Paul Elder <paul.elder@ideasonboard.com>\n---\nChanges in v2:\n- clean up unused includes\n- avoid dereferencing an absent std::optional\n---\n src/ipa/libipa/matrix.cpp  |  17 +++++\n src/ipa/libipa/matrix.h    | 136 +++++++++++++++++++++++++++++++++++++\n src/ipa/libipa/meson.build |   2 +\n 3 files changed, 155 insertions(+)\n create mode 100644 src/ipa/libipa/matrix.cpp\n create mode 100644 src/ipa/libipa/matrix.h",
    "diff": "diff --git a/src/ipa/libipa/matrix.cpp b/src/ipa/libipa/matrix.cpp\nnew file mode 100644\nindex 00000000..c222c3f0\n--- /dev/null\n+++ b/src/ipa/libipa/matrix.cpp\n@@ -0,0 +1,17 @@\n+/* SPDX-License-Identifier: BSD-2-Clause */\n+/*\n+ * Copyright (C) 2019, Raspberry Pi Ltd\n+ * Copyright (C) 2024, Paul Elder <paul.elder@ideasonboard.com>\n+ *\n+ * matrix.cpp - Matrix and related operations\n+ */\n+\n+#include \"matrix.h\"\n+\n+#include <libcamera/base/log.h>\n+\n+namespace libcamera {\n+\n+LOG_DEFINE_CATEGORY(Matrix)\n+\n+} /* namespace libcamera */\ndiff --git a/src/ipa/libipa/matrix.h b/src/ipa/libipa/matrix.h\nnew file mode 100644\nindex 00000000..f5520260\n--- /dev/null\n+++ b/src/ipa/libipa/matrix.h\n@@ -0,0 +1,136 @@\n+/* SPDX-License-Identifier: BSD-2-Clause */\n+/*\n+ * Copyright (C) 2019, Raspberry Pi Ltd\n+ * Copyright (C) 2024, Paul Elder <paul.elder@ideasonboard.com>\n+ *\n+ * matrix.cpp - Matrix and related operations\n+ */\n+#pragma once\n+\n+#include <cmath>\n+#include <sstream>\n+#include <vector>\n+\n+#include <libcamera/base/log.h>\n+\n+#include \"libcamera/internal/yaml_parser.h\"\n+\n+namespace libcamera {\n+\n+LOG_DECLARE_CATEGORY(Matrix)\n+\n+namespace ipa {\n+\n+template<typename T>\n+struct Matrix {\n+public:\n+\tMatrix(){};\n+\t~Matrix(){};\n+\n+\tMatrix(const unsigned int &_rows, const unsigned int &_cols,\n+\t       const std::vector<T> &_data)\n+\t\t: rows(_rows), cols(_cols)\n+\t{\n+\t\tfor (const T &x : _data)\n+\t\t\tdata.push_back(x);\n+\n+\t\twhile (rows * cols < data.size())\n+\t\t\tdata.push_back(0);\n+\t}\n+\n+\tint readYaml(unsigned int _rows, unsigned int _cols,\n+\t\t     const libcamera::YamlObject &yaml)\n+\t{\n+\t\trows = _rows;\n+\t\tcols = _cols;\n+\n+\t\tif (yaml.size() != rows * cols) {\n+\t\t\tLOG(Matrix, Error)\n+\t\t\t\t<< \"Wrong number of values in matrix: expected \"\n+\t\t\t\t<< rows * cols << \", got \" << yaml.size();\n+\t\t\treturn -EINVAL;\n+\t\t}\n+\n+\t\tfor (const auto &x : yaml.asList()) {\n+\t\t\tauto value = x.get<T>();\n+\t\t\tif (!value) {\n+\t\t\t\tLOG(Matrix, Error) << \"Failed to read matrix value\";\n+\t\t\t\treturn -EINVAL;\n+\t\t\t}\n+\t\t\tdata.push_back(*value);\n+\t\t}\n+\n+\t\treturn 0;\n+\t}\n+\n+\tconst std::string toString() const\n+\t{\n+\t\tstd::stringstream ss;\n+\t\tss << \"Matrix { \";\n+\t\tfor (unsigned int i = 0; i < rows; i++) {\n+\t\t\tss << \"[ \";\n+\t\t\tfor (unsigned int j = 0; j < cols; j++) {\n+\t\t\t\tss << data[i * cols + j];\n+\t\t\t\tss << ((j + 1 < cols) ? \", \" : \" \");\n+\t\t\t}\n+\t\t\tss << ((i + 1 < rows) ? \"], \" : \"]\");\n+\t\t}\n+\t\tss << \" }\";\n+\n+\t\treturn ss.str();\n+\t}\n+\n+\tconst T &operator[](unsigned int i) const { return data.at(i); }\n+\n+\tunsigned int rows;\n+\tunsigned int cols;\n+\tstd::vector<T> data;\n+};\n+\n+template<typename T>\n+Matrix<T> operator*(T d, const Matrix<T> &m)\n+{\n+\tstd::vector<T> result(m.data.size());\n+\n+\tfor (const T &x : m.data)\n+\t\tresult.push_back(d * x);\n+\n+\treturn Matrix(m.rows, m.cols, result);\n+}\n+\n+template<typename T>\n+Matrix<T> operator*(const Matrix<T> &m1, const Matrix<T> &m2)\n+{\n+\tASSERT(m1.cols == m2.rows);\n+\n+\tstd::vector<T> result(m1.rows * m2.cols);\n+\n+\tfor (unsigned int i = 0; i < m1.rows; i++) {\n+\t\tT sum = 0;\n+\n+\t\tfor (unsigned int j = 0; j < m2.cols; j++)\n+\t\t\tsum += m1[i * m1.cols + j] * m2[j * m2.cols + i];\n+\n+\t\tresult.push_back(sum);\n+\t}\n+\n+\treturn Matrix<T>(m1.rows, m2.cols, result);\n+}\n+\n+template<typename T>\n+Matrix<T> operator+(const Matrix<T> &m1, const Matrix<T> &m2)\n+{\n+\tASSERT(m1.cols == m2.cols && m1.rows == m2.rows);\n+\n+\tunsigned int len = m1.rows * m1.cols;\n+\tstd::vector<T> result(len);\n+\n+\tfor (unsigned int i = 0; i < len; i++)\n+\t\tresult[i] = m1[i] + m2[i];\n+\n+\treturn Matrix<T>(m1.rows, m1.cols, result);\n+}\n+\n+} /* namespace ipa */\n+\n+} /* namespace libcamera */\ndiff --git a/src/ipa/libipa/meson.build b/src/ipa/libipa/meson.build\nindex 817a09cf..5d5ba5e5 100644\n--- a/src/ipa/libipa/meson.build\n+++ b/src/ipa/libipa/meson.build\n@@ -6,6 +6,7 @@ libipa_headers = files([\n     'exposure_mode_helper.h',\n     'fc_queue.h',\n     'histogram.h',\n+    'matrix.h',\n     'module.h',\n     'pwl.h',\n ])\n@@ -16,6 +17,7 @@ libipa_sources = files([\n     'exposure_mode_helper.cpp',\n     'fc_queue.cpp',\n     'histogram.cpp',\n+    'matrix.cpp',\n     'module.cpp',\n     'pwl.cpp'\n ])\n",
    "prefixes": [
        "v2",
        "1/3"
    ]
}