{"id":27340,"url":"https://patchwork.libcamera.org/api/1.1/patches/27340/?format=json","web_url":"https://patchwork.libcamera.org/patch/27340/","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":"<20260708-libipa-algorithms-v5-34-0759d0359f52@ideasonboard.com>","date":"2026-07-08T15:51:16","name":"[v5,34/36] ipa: libipa: lsc: Specialize Interpolator for uint8_t","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"8cc70f4d288768cb68f0ddf42e1226c4373ac2b1","submitter":{"id":143,"url":"https://patchwork.libcamera.org/api/1.1/people/143/?format=json","name":"Jacopo Mondi","email":"jacopo.mondi@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/27340/mbox/","series":[{"id":6048,"url":"https://patchwork.libcamera.org/api/1.1/series/6048/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=6048","date":"2026-07-08T15:50:42","name":"ipa: libipa: Introduce libipa algorithms","version":5,"mbox":"https://patchwork.libcamera.org/series/6048/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/27340/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/27340/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 0890CC3338\n\tfor ;\n\tWed, 8 Jul 2026 15:51:58 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id A3C8766111;\n\tWed, 8 Jul 2026 17:51:57 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 5214C660D7\n\tfor ;\n\tWed, 8 Jul 2026 17:51:23 +0200 (CEST)","from [192.168.1.182] (93-46-82-201.ip106.fastwebnet.it\n\t[93.46.82.201])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 7309A4059;\n\tWed, 8 Jul 2026 17:50:33 +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=\"gw1M6ND6\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1783525833;\n\tbh=pKxxZ9cajwGg/4XFTEBKJ35/7Bmlg5h/GcltukR9A5Y=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n\tb=gw1M6ND6YIZtKzRMAqp7875ugVhah/zvvxb7lvadNtlXDub+XL0JQAWOe4rEFe3w1\n\tnufMYXkhJapRlmK/mcra+RQFZGK5jCs+QMRoSOHYk+DL4cEHc2ML6TvqdluO5Uniax\n\t3Swab3eNCbwrtAEFAKpBFxUxBPgQ9asIWbNyyf/A=","From":"Jacopo Mondi ","Date":"Wed, 08 Jul 2026 17:51:16 +0200","Subject":"[PATCH v5 34/36] ipa: libipa: lsc: Specialize Interpolator for\n\tuint8_t","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20260708-libipa-algorithms-v5-34-0759d0359f52@ideasonboard.com>","References":"<20260708-libipa-algorithms-v5-0-0759d0359f52@ideasonboard.com>","In-Reply-To":"<20260708-libipa-algorithms-v5-0-0759d0359f52@ideasonboard.com>","To":"libcamera-devel@lists.libcamera.org, \n\tStefan Klug ","Cc":"Jacopo Mondi ","X-Mailer":"b4 0.14.3","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1736;\n\ti=jacopo.mondi@ideasonboard.com; h=from:subject:message-id;\n\tbh=pKxxZ9cajwGg/4XFTEBKJ35/7Bmlg5h/GcltukR9A5Y=;\n\tb=owEBbQKS/ZANAwAKAXI0Bo8WoVY8AcsmYgBqTnHtJT9XBhcWqONPcXhgf4AAu/oHcL8TpuY5G\n\tqSQwB1qC0iJAjMEAAEKAB0WIQS1xD1IgJogio9YOMByNAaPFqFWPAUCak5x7QAKCRByNAaPFqFW\n\tPA/BEACbet4XP/rkUgrxopirdwDFiyhdtdhN4pN06m8DAV19t9qjfx7QHx39W604X9bPUG6ufsk\n\ttaf7jjGNOLYonk8I1UwprQl1AiOjXhx0c0swPNGlQuJtVT4DB88MCt2IHLISGOuBReJpffMLgfg\n\tpU9zJmUy44jgXjNu+768EEvzx1bHqV1p7sOFchbuXkdYzIsjXEeT63FfBKgfKi+SBxwjLBTj3/k\n\t0GkMbJqp2PNqyRKV1vu/gTnmEiRhMtuU+Q8i31HOIx99gxXw2/H9s8ysS4wHUq4qGY0LJ3qxzB6\n\tiIWTwRzwyslfV6r96XdZ1DS0v/u535enjPFIZ90CzaDbgUMtQAX7HZ4JPJstfIw7xSLWVMlA9lk\n\ti1tvAgFgIpYA64Y8mpxlGG/ZbC+ZptxQK72exo+r+iFyIpJ6swmuddaKRDa90WEHhZoqntV09X5\n\trNje8oiXnlnO4FSK2kUyf1g1c5cisVWPtV+V5QPjL18RNffCBRrFKBwi6vNPS3TnlVLkogUnWB0\n\txZCDLrBsofhWJ677egM0HVF/k+5iYlNMLK2U4Uzscvs3PSsgNup+Typqqdrp3snXtCvcGpmF6cp\n\t0MBilIIK4/wltPhJSG372+SSFtl7hwss8qy9dTtg8trb20Rvev26ujYVcw49l9VzKJiZ5V4Ctax\n\ttGVi1nBdvonW8fg==","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":"","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":"The Mali-C55 LSC algorithm uses 8-bit gain values.\n\nSpecialize Interpolator> for uint8_t to prevent the\nuint16_t specialization from being selected.\n\nSigned-off-by: Jacopo Mondi \n---\n src/ipa/libipa/lsc_base.cpp | 11 +++++++++++\n src/ipa/libipa/lsc_base.h | 7 +++++++\n 2 files changed, 18 insertions(+)","diff":"diff --git a/src/ipa/libipa/lsc_base.cpp b/src/ipa/libipa/lsc_base.cpp\nindex c87e2680d973..a0b78ac5265b 100644\n--- a/src/ipa/libipa/lsc_base.cpp\n+++ b/src/ipa/libipa/lsc_base.cpp\n@@ -63,6 +63,17 @@ namespace lsc {\n } /* namespace lsc */\n \n #ifndef __DOXYGEN__\n+template<>\n+void Interpolator>::\n+\tinterpolate(const lsc::Components &a,\n+\t\t const lsc::Components &b,\n+\t\t lsc::Components &dest,\n+\t\t double lambda)\n+{\n+\tfor (auto const &[k, v] : a)\n+\t\tinterpolateVector(v, b.at(k), dest[k], lambda);\n+}\n+\n template<>\n void Interpolator>::\n \tinterpolate(const lsc::Components &a,\ndiff --git a/src/ipa/libipa/lsc_base.h b/src/ipa/libipa/lsc_base.h\nindex a25d951e8ddb..51f3dd91f547 100644\n--- a/src/ipa/libipa/lsc_base.h\n+++ b/src/ipa/libipa/lsc_base.h\n@@ -49,6 +49,13 @@ void interpolateVector(const std::vector &a, const std::vector &b,\n \t\tdest[i] = a[i] * (1.0 - lambda) + b[i] * lambda;\n }\n \n+template<>\n+void Interpolator>::\n+\tinterpolate(const lsc::Components &a,\n+\t\t const lsc::Components &b,\n+\t\t lsc::Components &dest,\n+\t\t double lambda);\n+\n template<>\n void Interpolator>::\n \tinterpolate(const lsc::Components &a,\n","prefixes":["v5","34/36"]}