{"id":26998,"url":"https://patchwork.libcamera.org/api/1.1/patches/26998/?format=json","web_url":"https://patchwork.libcamera.org/patch/26998/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260621-kbingham-awb-saturation-v1-1-b91ea59c6cfb@ideasonboard.com>","date":"2026-06-20T23:00:28","name":"[1/7] libcamera: vector: Add clamp operation","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"d399256626d024ff41e1cb4414ed1895b3cff748","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/1.1/people/4/?format=json","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/26998/mbox/","series":[{"id":6009,"url":"https://patchwork.libcamera.org/api/1.1/series/6009/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=6009","date":"2026-06-20T23:00:27","name":"softisp: Fix Saturation and Black level handling","version":1,"mbox":"https://patchwork.libcamera.org/series/6009/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/26998/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/26998/checks/","tags":{},"headers":{"Return-Path":"","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 CEA73C3303\n\tfor ;\n\tSat, 20 Jun 2026 23:00:45 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 1142365702;\n\tSun, 21 Jun 2026 01:00:40 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 13AD2656D6\n\tfor ;\n\tSun, 21 Jun 2026 01:00:36 +0200 (CEST)","from [192.168.0.240]\n\t(cpc89244-aztw30-2-0-cust6594.18-1.cable.virginm.net [86.31.185.195])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id B875CB8B;\n\tSun, 21 Jun 2026 00:59:58 +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=\"i7vb/rGr\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1781996398;\n\tbh=9qKWrXCM3qnZu1o6pRQj8bxGCCmlSd/kEaWHYvvQaPo=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=i7vb/rGrMja1RtZGp5eo+td7S0iFW/w3JAF13Um4Phw0FPoZoL2/LgXPn5fkqQRcQ\n\tyTJCJXio+vxhhkZhGkrRk/eiOF+nsYeB4fRrVD7BKazHHBL2ZWEJ+WQOFJZFGA4fP1\n\tgBQShtIMI0xT3r6cZX4tQVpaKYoThHboBNPbTAlM=","From":"Kieran Bingham ","Date":"Sun, 21 Jun 2026 00:00:28 +0100","Subject":"[PATCH 1/7] libcamera: vector: Add clamp operation","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20260621-kbingham-awb-saturation-v1-1-b91ea59c6cfb@ideasonboard.com>","References":"<20260621-kbingham-awb-saturation-v1-0-b91ea59c6cfb@ideasonboard.com>","In-Reply-To":"<20260621-kbingham-awb-saturation-v1-0-b91ea59c6cfb@ideasonboard.com>","To":"libcamera-devel@lists.libcamera.org","Cc":"Kieran Bingham , \n\tLaurent Pinchart ","X-Mailer":"b4 0.14.2","X-Developer-Signature":"v=1; a=ed25519-sha256; t=1781996434; l=2357;\n\ti=kieran.bingham@ideasonboard.com; s=20260204;\n\th=from:subject:message-id; \n\tbh=9qKWrXCM3qnZu1o6pRQj8bxGCCmlSd/kEaWHYvvQaPo=;\n\tb=wcBL9tQXhGZHKwNGQKtPeZHXRoIGu923Cnic5hspX+2KXHKq3qEsZuk8o5ZsteAFQocNOrEz2\n\t8z2hFZ33oHaBw6T0s41gPtPE8kKvyb3F6OmpbrqGcoA4tB+VWE9ieeR","X-Developer-Key":"i=kieran.bingham@ideasonboard.com; a=ed25519;\n\tpk=IOxS2C6nWHNjLfkDR71Iesk904i6wJDfEERqV7hDBdY=","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Provide a helper that will perform a std::clamp given a scaler high and\nlow value to clamp to.\n\nSuggested-by: Laurent Pinchart \nSigned-off-by: Kieran Bingham \n---\n include/libcamera/internal/vector.h | 8 ++++++++\n src/libcamera/vector.cpp | 8 ++++++++\n test/vector.cpp | 1 +\n 3 files changed, 17 insertions(+)","diff":"diff --git a/include/libcamera/internal/vector.h b/include/libcamera/internal/vector.h\nindex 093efafa8982fe553a953316ac794bef46eec5d4..17ecbda50f2dc4363548a4a29639a751a187dac6 100644\n--- a/include/libcamera/internal/vector.h\n+++ b/include/libcamera/internal/vector.h\n@@ -185,6 +185,14 @@ public:\n \t\treturn apply(*this, scalar, [](T a, T b) -> T { return std::max(a, b); });\n \t}\n \n+\tconstexpr Vector clamp(T low, T high) const\n+\t{\n+\t\tVector result;\n+\t\tfor (unsigned int i = 0; i < Rows; i++)\n+\t\t\tresult[i] = std::clamp(data_[i], low, high);\n+\t\treturn result;\n+\t}\n+\n \tconstexpr T dot(const Vector &other) const\n \t{\n \t\tT ret = 0;\ndiff --git a/src/libcamera/vector.cpp b/src/libcamera/vector.cpp\nindex 47b3d1af36d90f9719c527b8458fbfe07412239e..a135ab498e17149b9dc54de7204e8a34262a2da9 100644\n--- a/src/libcamera/vector.cpp\n+++ b/src/libcamera/vector.cpp\n@@ -224,6 +224,14 @@ LOG_DEFINE_CATEGORY(Vector)\n * \\return The element-wise maximum of this vector and \\a scalar\n */\n \n+/**\n+ * \\fn Vector::clamp(T low, T high) const\n+ * \\brief Clamp the vector element-wise between \\a low and \\a high\n+ * \\param[in] low The lower limit\n+ * \\param[in] high The upper limit\n+ * \\return A vector with each element clamped between \\a low and \\a high\n+ */\n+\n /**\n * \\fn Vector::dot(const Vector &other) const\n * \\brief Compute the dot product\ndiff --git a/test/vector.cpp b/test/vector.cpp\nindex 4ff908e8f682f19d65c55d071fcd300071cf90ac..2f3d97d93dccbe153f2d1cf536423f7446a22aab 100644\n--- a/test/vector.cpp\n+++ b/test/vector.cpp\n@@ -72,6 +72,7 @@ protected:\n \t\tASSERT_EQ(v2.min(4.0), (Vector{{ 1.0, 4.0, 4.0 }}));\n \t\tASSERT_EQ(v2.max(v3), (Vector{{ 4.0, 4.0, 8.0 }}));\n \t\tASSERT_EQ(v2.max(4.0), (Vector{{ 4.0, 4.0, 8.0 }}));\n+\t\tASSERT_EQ(v2.clamp(2.0, 6.0), (Vector{{ 2.0, 4.0, 6.0 }}));\n \n \t\tASSERT_EQ(v2.dot(v3), 52.0);\n \n","prefixes":["1/7"]}