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{ "id": 27405, "url": "https://patchwork.libcamera.org/api/patches/27405/?format=api", "web_url": "https://patchwork.libcamera.org/patch/27405/", "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": "<20260720-libipa-algorithms-v6-13-ececb73f97cb@ideasonboard.com>", "date": "2026-07-20T14:59:31", "name": "[v6,13/31] ipa: libipa: lsc_polynomial: Rename LscPolynomial", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "40cc57212224c36455e76f5095be54fef41cb8c9", "submitter": { "id": 143, "url": "https://patchwork.libcamera.org/api/people/143/?format=api", "name": "Jacopo Mondi", "email": "jacopo.mondi@ideasonboard.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/27405/mbox/", "series": [ { "id": 6067, "url": "https://patchwork.libcamera.org/api/series/6067/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=6067", "date": "2026-07-20T14:59:18", "name": "ipa: libipa: Introduce libipa algorithms", "version": 6, "mbox": "https://patchwork.libcamera.org/series/6067/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/27405/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/27405/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 95AF0C3308\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 20 Jul 2026 15:00:04 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 9575567E70;\n\tMon, 20 Jul 2026 17:00:03 +0200 (CEST)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 90EE167E42\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 20 Jul 2026 16:59:48 +0200 (CEST)", "from [192.168.1.106] (mob-5-90-63-152.net.vodafone.it\n\t[5.90.63.152])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id AE1C81CE7;\n\tMon, 20 Jul 2026 16:58:49 +0200 (CEST)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"aBJGVv1P\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1784559530;\n\tbh=k/Zxb+dsBZMFvAdkrJe72HrvcKz5+1mdvrGEcvsl2bk=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=aBJGVv1P7Lu27rNwDJMJaBymNnYcd/QYYAuCj80NWpaFtTiPbfJFxqnA17X27aDKe\n\tVqkD0wYq4uvTyCmRBOA3fTv6rHAE6kcRB4Co3sqdECXnicpBvVm2Dxhnie/P8E/OTU\n\tkEyWd5vBE6GMaw3cmRhf5jGROwMTrC33Og/q0m+g=", "From": "Jacopo Mondi <jacopo.mondi@ideasonboard.com>", "Date": "Mon, 20 Jul 2026 16:59:31 +0200", "Subject": "[PATCH v6 13/31] ipa: libipa: lsc_polynomial: Rename LscPolynomial", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260720-libipa-algorithms-v6-13-ececb73f97cb@ideasonboard.com>", "References": "<20260720-libipa-algorithms-v6-0-ececb73f97cb@ideasonboard.com>", "In-Reply-To": "<20260720-libipa-algorithms-v6-0-ececb73f97cb@ideasonboard.com>", "To": "libcamera-devel@lists.libcamera.org, \n\tStefan Klug <stefan.klug@ideasonboard.com>, \n\tMilan Zamazal <mzamazal@redhat.com>", "Cc": "Jacopo Mondi <jacopo.mondi@ideasonboard.com>, \n\tKieran Bingham <kieran.bingham@ideasonboard.com>", "X-Mailer": "b4 0.14.3", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=6305;\n\ti=jacopo.mondi@ideasonboard.com; h=from:subject:message-id;\n\tbh=k/Zxb+dsBZMFvAdkrJe72HrvcKz5+1mdvrGEcvsl2bk=;\n\tb=owEBbQKS/ZANAwAKAXI0Bo8WoVY8AcsmYgBqXjfV2IEhtmRzL2M+2Ev2B8M/MWP6xfxCeLq8W\n\ti+7YNsRGxaJAjMEAAEKAB0WIQS1xD1IgJogio9YOMByNAaPFqFWPAUCal431QAKCRByNAaPFqFW\n\tPLXOD/9UBuAE9PkHmJ19uXgGrIiJFNj5n5rOrV1gXTo3y8GwB4levSFNJogeIyLeGjs0nL+/bSs\n\tAfIkCoVIxeoUTLQTa7gx9rQKhzNV/WwdZVkK2PGw7HYY990xC995QjV2rHnuwmFZBFnCv5+HyuW\n\tAc8WLOMbKIOxSNOrVVY1DzsbuCjgbsxR7BrsPaIWjOpfd+UxaoxY6oGcN28BPViKuTqKmRAco4W\n\tELYvvAA7G2IGonRw7ZH5uWwKnr4w1BgVOII6WA9H+YDzxSYMn89Nc0Sg4kVqDGB+ce00SDhVvW6\n\t+oXW3rE+Yxvc/W4Yxmh2xJ/dC5wUAJXLiYS8p5B6pdjuUBj7+6YEaSq6xoUIPgOk51+n7LKFa54\n\t9ajwpkePeYUYwsiBLf/0V3N3/dVdS0ju/Y1Jrd1Gsq25B6Tx6QabJ5CdODslMZ79GpdGMinvBks\n\t9Qqd6suC3b1WwraRSJihZ2/WYUE53jMoCn6ZVQWvvvmq3ReJii1ceOHCl/ViyN+KZ2GJQK/ivD9\n\tAcUPNYI/ktt5iFKGBeE4DSluNRkKNbUCFSLolrxN28XnTQZF1jLQnB5SHiw0OgYGf/LXgy1ldVL\n\tbKawzmEreQ8EV/lD0smTiP1jHZk8P9lQLLKgzw0dXBQ1ShXaenU+NYQWfMBnXAjk24WqdJOOlER\n\tpnsZ9vq3UKZlGCw==", "X-Developer-Key": "i=jacopo.mondi@ideasonboard.com; a=openpgp;\n\tfpr=72392EDC88144A65C701EA9BA5826A2587AD026B", "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": "In order to prepare to introduce the LscPolynomial class move the\nexisting implementation of the polynomial representation LscPolynomial\nto lsc::Polynomial.\n\nSigned-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>\nReviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\nReviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>\n---\n src/ipa/libipa/lsc_polynomial.cpp | 20 ++++++++++++--------\n src/ipa/libipa/lsc_polynomial.h | 12 ++++++++----\n src/ipa/rkisp1/algorithms/lsc.cpp | 22 +++++++++++-----------\n 3 files changed, 31 insertions(+), 23 deletions(-)", "diff": "diff --git a/src/ipa/libipa/lsc_polynomial.cpp b/src/ipa/libipa/lsc_polynomial.cpp\nindex 921af0b0bd13..b93063bf8bc7 100644\n--- a/src/ipa/libipa/lsc_polynomial.cpp\n+++ b/src/ipa/libipa/lsc_polynomial.cpp\n@@ -20,8 +20,10 @@ LOG_DEFINE_CATEGORY(LscPolynomial)\n \n namespace ipa {\n \n+namespace lsc {\n+\n /**\n- * \\class LscPolynomial\n+ * \\class Polynomial\n * \\brief Class for handling even polynomials used in lens shading correction\n *\n * Shading artifacts of camera lenses can be modeled using even radial\n@@ -31,7 +33,7 @@ namespace ipa {\n */\n \n /**\n- * \\fn LscPolynomial::LscPolynomial(double cx = 0.0, double cy = 0.0, double k0 = 0.0,\n+ * \\fn Polynomial::Polynomial(double cx = 0.0, double cy = 0.0, double k0 = 0.0,\n \t\t double k1 = 0.0, double k2 = 0.0, double k3 = 0.0,\n \t\t double k4 = 0.0)\n * \\brief Construct a polynomial using the given coefficients\n@@ -45,7 +47,7 @@ namespace ipa {\n */\n \n /**\n- * \\fn LscPolynomial::sampleAtNormalizedPixelPos(double x, double y)\n+ * \\fn Polynomial::sampleAtNormalizedPixelPos(double x, double y)\n * \\brief Sample the polynomial at the given normalized pixel position\n *\n * This functions samples the polynomial at the given pixel position divided by\n@@ -57,7 +59,7 @@ namespace ipa {\n */\n \n /**\n- * \\fn LscPolynomial::getM()\n+ * \\fn Polynomial::getM()\n * \\brief Get the value m as described in the dng specification\n *\n * Returns m according to dng spec. m represents the Euclidean distance\n@@ -68,7 +70,7 @@ namespace ipa {\n */\n \n /**\n- * \\fn LscPolynomial::setReferenceImageSize(const Size &size)\n+ * \\fn Polynomial::setReferenceImageSize(const Size &size)\n * \\brief Set the reference image size\n *\n * Set the reference image size that is used for subsequent calls to getM() and\n@@ -77,12 +79,14 @@ namespace ipa {\n * \\param size The size of the reference image\n */\n \n+} /* namespace lsc */\n+\n } /* namespace ipa */\n \n #ifndef __DOXYGEN__\n template<>\n-std::optional<ipa::LscPolynomial>\n-ValueNode::Accessor<ipa::LscPolynomial>::get(const ValueNode &obj) const\n+std::optional<ipa::lsc::Polynomial>\n+ValueNode::Accessor<ipa::lsc::Polynomial>::get(const ValueNode &obj) const\n {\n \tstd::optional<double> cx = obj[\"cx\"].get<double>();\n \tstd::optional<double> cy = obj[\"cy\"].get<double>();\n@@ -98,7 +102,7 @@ ValueNode::Accessor<ipa::LscPolynomial>::get(const ValueNode &obj) const\n \t\treturn std::nullopt;\n \t}\n \n-\treturn ipa::LscPolynomial(*cx, *cy, *k0, *k1, *k2, *k3, *k4);\n+\treturn ipa::lsc::Polynomial(*cx, *cy, *k0, *k1, *k2, *k3, *k4);\n }\n #endif /* __DOXYGEN__ */\n \ndiff --git a/src/ipa/libipa/lsc_polynomial.h b/src/ipa/libipa/lsc_polynomial.h\nindex d52ec86946b1..3be33edfe7d8 100644\n--- a/src/ipa/libipa/lsc_polynomial.h\n+++ b/src/ipa/libipa/lsc_polynomial.h\n@@ -24,12 +24,14 @@ LOG_DECLARE_CATEGORY(LscPolynomial)\n \n namespace ipa {\n \n-class LscPolynomial\n+namespace lsc {\n+\n+class Polynomial\n {\n public:\n-\tLscPolynomial(double cx = 0.0, double cy = 0.0, double k0 = 0.0,\n-\t\t double k1 = 0.0, double k2 = 0.0, double k3 = 0.0,\n-\t\t double k4 = 0.0)\n+\tPolynomial(double cx = 0.0, double cy = 0.0, double k0 = 0.0,\n+\t\t double k1 = 0.0, double k2 = 0.0, double k3 = 0.0,\n+\t\t double k4 = 0.0)\n \t\t: cx_(cx), cy_(cy), cnx_(0), cny_(0),\n \t\t coefficients_({ k0, k1, k2, k3, k4 })\n \t{\n@@ -78,6 +80,8 @@ private:\n \tSize imageSize_;\n };\n \n+} /* namespace lsc */\n+\n } /* namespace ipa */\n \n } /* namespace libcamera */\ndiff --git a/src/ipa/rkisp1/algorithms/lsc.cpp b/src/ipa/rkisp1/algorithms/lsc.cpp\nindex af919f7429af..84d2b1d3bdac 100644\n--- a/src/ipa/rkisp1/algorithms/lsc.cpp\n+++ b/src/ipa/rkisp1/algorithms/lsc.cpp\n@@ -65,10 +65,10 @@ class LscPolynomialImpl : public LscImplementation\n {\n private:\n \tstruct PolynomialComponents {\n-\t\tLscPolynomial pr;\n-\t\tLscPolynomial pgr;\n-\t\tLscPolynomial pgb;\n-\t\tLscPolynomial pb;\n+\t\tlsc::Polynomial pr;\n+\t\tlsc::Polynomial pgr;\n+\t\tlsc::Polynomial pgb;\n+\t\tlsc::Polynomial pb;\n \t};\n \tusing PolynomialComponentsMap = std::map<unsigned int, PolynomialComponents>;\n \n@@ -87,7 +87,7 @@ public:\n \n private:\n \tstd::vector<double> sizesListToPositions(Span<const double> sizes);\n-\tstd::vector<uint16_t> samplePolynomial(const LscPolynomial &poly,\n+\tstd::vector<uint16_t> samplePolynomial(const lsc::Polynomial &poly,\n \t\t\t\t\t Span<const double> xPositions,\n \t\t\t\t\t Span<const double> yPositions,\n \t\t\t\t\t const Rectangle &cropRectangle);\n@@ -98,7 +98,7 @@ private:\n int LscPolynomialImpl::parseLscData(const ValueNode &sets)\n {\n \tfor (const auto &set : sets.asList()) {\n-\t\tstd::optional<LscPolynomial> pr, pgr, pgb, pb;\n+\t\tstd::optional<lsc::Polynomial> pr, pgr, pgb, pb;\n \t\tuint32_t ct = set[\"ct\"].get<uint32_t>(0);\n \n \t\tif (lscData_.count(ct)) {\n@@ -108,10 +108,10 @@ int LscPolynomialImpl::parseLscData(const ValueNode &sets)\n \t\t\treturn -EINVAL;\n \t\t}\n \n-\t\tpr = set[\"r\"].get<LscPolynomial>();\n-\t\tpgr = set[\"gr\"].get<LscPolynomial>();\n-\t\tpgb = set[\"gb\"].get<LscPolynomial>();\n-\t\tpb = set[\"b\"].get<LscPolynomial>();\n+\t\tpr = set[\"r\"].get<lsc::Polynomial>();\n+\t\tpgr = set[\"gr\"].get<lsc::Polynomial>();\n+\t\tpgb = set[\"gb\"].get<lsc::Polynomial>();\n+\t\tpb = set[\"b\"].get<lsc::Polynomial>();\n \n \t\tif (!(pr || pgr || pgb || pb)) {\n \t\t\tLOG(RkISP1Lsc, Error)\n@@ -161,7 +161,7 @@ LscPolynomialImpl::sampleForCrop(const Rectangle &cropRectangle,\n }\n \n std::vector<uint16_t>\n-LscPolynomialImpl::samplePolynomial(const LscPolynomial &poly,\n+LscPolynomialImpl::samplePolynomial(const lsc::Polynomial &poly,\n \t\t\t\t Span<const double> xPositions,\n \t\t\t\t Span<const double> yPositions,\n \t\t\t\t const Rectangle &cropRectangle)\n", "prefixes": [ "v6", "13/31" ] }