{"id":18993,"url":"https://patchwork.libcamera.org/api/patches/18993/?format=json","web_url":"https://patchwork.libcamera.org/patch/18993/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/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":"<20230912102442.169001-5-david.plowman@raspberrypi.com>","date":"2023-09-12T10:24:41","name":"[libcamera-devel,v3,4/5] ipa: rpi: agc: Add AgcChannelConstraint class","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"e2ff1544b98cf0431a1c8b8000e8d00e3ea5debd","submitter":{"id":42,"url":"https://patchwork.libcamera.org/api/people/42/?format=json","name":"David Plowman","email":"david.plowman@raspberrypi.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/18993/mbox/","series":[{"id":4017,"url":"https://patchwork.libcamera.org/api/series/4017/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=4017","date":"2023-09-12T10:24:37","name":"Multi-channel AGC","version":3,"mbox":"https://patchwork.libcamera.org/series/4017/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/18993/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/18993/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 2173CC32B2\n\tfor ;\n\tTue, 12 Sep 2023 10:24:56 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 6D09A628F8;\n\tTue, 12 Sep 2023 12:24:55 +0200 (CEST)","from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com\n\t[IPv6:2a00:1450:4864:20::32a])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id AEF7061DEF\n\tfor ;\n\tTue, 12 Sep 2023 12:24:52 +0200 (CEST)","by mail-wm1-x32a.google.com with SMTP id\n\t5b1f17b1804b1-401d67434daso58373145e9.2\n\tfor ;\n\tTue, 12 Sep 2023 03:24:52 -0700 (PDT)","from pi4-davidp.pitowers.org\n\t([2a00:1098:3142:14:2bce:64d6:1a5c:49a2])\n\tby smtp.gmail.com with ESMTPSA id\n\tn10-20020a05600c294a00b003fefaf299b6sm12426575wmd.38.2023.09.12.03.24.51\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tTue, 12 Sep 2023 03:24:51 -0700 (PDT)"],"DKIM-Signature":["v=1; 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dkim=pass (2048-bit key; \n\tunprotected) header.d=raspberrypi.com\n\theader.i=@raspberrypi.com\n\theader.b=\"B4rxI1Bz\"; dkim-atps=neutral","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20230601; t=1694514292; x=1695119092;\n\th=content-transfer-encoding:mime-version:references:in-reply-to\n\t:message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc\n\t:subject:date:message-id:reply-to;\n\tbh=Fh/H/WqAaCgcyXj/u7SH9bguu1ZXy8aCpSWRL27uAKg=;\n\tb=NHjVbpVGiuISAtkqUFhbKjMNw9KJJFSP6MIHjgy3phkY6mGhLoBJ3vGX2l2n3w7AWh\n\tdzqEWllr+M+PQABF+V9sQB/5ZkWDCj2g+ioRf8NdCBHhvFB+gqeF+W/G4IXg+J/FExOL\n\t8CMDA2jVx+HO8cezxaekW3BabNGdE5oOycrKMz2Aw4TXyYv7YxK2perUbyK4kjvzWMa5\n\tn4M5zEYsH1B0ONtKZ8VjPfOpElVwESGFSzKN5/odwRfTI/C6QBtZrx2PWIyAiRQSP+11\n\tUyqzwODbFWujFQAAefqrxcNwxligvJGXUUZahsjIA6di/JgiQvq5AqO3XrEX7maTZfVi\n\tTRdQ==","X-Gm-Message-State":"AOJu0Yzm4ESNCLyZgJoLEIIQP2+mvOTO2VQu8vNdGS5PIdADO7p3L5Ux\n\txx/v9mfVoK/SPqBqsLSFtMlutfg2NuuCcWaW4nw=","X-Google-Smtp-Source":"AGHT+IE3C7MuiQUY3uC3tn/cxxzzgWF50UMuAfrf7wDIqmQZf5pJYv3IUIZlqdRciPgiy1SnwMrVZA==","X-Received":"by 2002:a05:600c:ad3:b0:401:bcd9:4871 with SMTP id\n\tc19-20020a05600c0ad300b00401bcd94871mr11019630wmr.21.1694514292006; \n\tTue, 12 Sep 2023 03:24:52 -0700 (PDT)","To":"libcamera-devel@lists.libcamera.org","Date":"Tue, 12 Sep 2023 11:24:41 +0100","Message-Id":"<20230912102442.169001-5-david.plowman@raspberrypi.com>","X-Mailer":"git-send-email 2.30.2","In-Reply-To":"<20230912102442.169001-1-david.plowman@raspberrypi.com>","References":"<20230912102442.169001-1-david.plowman@raspberrypi.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v3 4/5] ipa: rpi: agc: Add\n\tAgcChannelConstraint class","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","From":"David Plowman via libcamera-devel ","Reply-To":"David Plowman ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"A channel constraint is somewhat similar to the upper/lower bound\nconstraints that we use elsewhere, but these constraints apply between\nmultiple AGC channels. For example, it lets you say things like \"don't\nlet the channel 1 total exposure be more than 8x that of channel 0\",\nand so on. By using both an upper and lower bound constraint, you\ncould fix one AGC channel always to be a fixed ratio of another.\n\nAlso read a vector of them (if present) when loading the tuning file.\n\nSigned-off-by: David Plowman \nReviewed-by: Naushir Patuck \n---\n src/ipa/rpi/controller/rpi/agc_channel.cpp | 49 ++++++++++++++++++++++\n src/ipa/rpi/controller/rpi/agc_channel.h | 10 +++++\n 2 files changed, 59 insertions(+)","diff":"diff --git a/src/ipa/rpi/controller/rpi/agc_channel.cpp b/src/ipa/rpi/controller/rpi/agc_channel.cpp\nindex f1f19598..7fce35b0 100644\n--- a/src/ipa/rpi/controller/rpi/agc_channel.cpp\n+++ b/src/ipa/rpi/controller/rpi/agc_channel.cpp\n@@ -170,6 +170,49 @@ readConstraintModes(std::map &constraintModes,\n \treturn { 0, first };\n }\n \n+int AgcChannelConstraint::read(const libcamera::YamlObject ¶ms)\n+{\n+\tauto channelValue = params[\"channel\"].get();\n+\tif (!channelValue) {\n+\t\tLOG(RPiAgc, Error) << \"AGC channel constraint must have a channel\";\n+\t\treturn -EINVAL;\n+\t}\n+\tchannel = *channelValue;\n+\n+\tstd::string boundString = params[\"bound\"].get(\"\");\n+\ttransform(boundString.begin(), boundString.end(),\n+\t\t boundString.begin(), ::toupper);\n+\tif (boundString != \"UPPER\" && boundString != \"LOWER\") {\n+\t\tLOG(RPiAgc, Error) << \"AGC channel constraint type should be UPPER or LOWER\";\n+\t\treturn -EINVAL;\n+\t}\n+\tbound = boundString == \"UPPER\" ? Bound::UPPER : Bound::LOWER;\n+\n+\tauto factorValue = params[\"factor\"].get();\n+\tif (!factorValue) {\n+\t\tLOG(RPiAgc, Error) << \"AGC channel constraint must have a factor\";\n+\t\treturn -EINVAL;\n+\t}\n+\tfactor = *factorValue;\n+\n+\treturn 0;\n+}\n+\n+static int readChannelConstraints(std::vector &channelConstraints,\n+\t\t\t\t const libcamera::YamlObject ¶ms)\n+{\n+\tfor (const auto &p : params.asList()) {\n+\t\tAgcChannelConstraint constraint;\n+\t\tint ret = constraint.read(p);\n+\t\tif (ret)\n+\t\t\treturn ret;\n+\n+\t\tchannelConstraints.push_back(constraint);\n+\t}\n+\n+\treturn 0;\n+}\n+\n int AgcConfig::read(const libcamera::YamlObject ¶ms)\n {\n \tLOG(RPiAgc, Debug) << \"AgcConfig\";\n@@ -188,6 +231,12 @@ int AgcConfig::read(const libcamera::YamlObject ¶ms)\n \tif (ret)\n \t\treturn ret;\n \n+\tif (params.contains(\"channel_constraints\")) {\n+\t\tret = readChannelConstraints(channelConstraints, params[\"channel_constraints\"]);\n+\t\tif (ret)\n+\t\t\treturn ret;\n+\t}\n+\n \tret = yTarget.read(params[\"y_target\"]);\n \tif (ret)\n \t\treturn ret;\ndiff --git a/src/ipa/rpi/controller/rpi/agc_channel.h b/src/ipa/rpi/controller/rpi/agc_channel.h\nindex 24ee3491..5d2d8a11 100644\n--- a/src/ipa/rpi/controller/rpi/agc_channel.h\n+++ b/src/ipa/rpi/controller/rpi/agc_channel.h\n@@ -44,11 +44,21 @@ struct AgcConstraint {\n \n typedef std::vector AgcConstraintMode;\n \n+struct AgcChannelConstraint {\n+\tenum class Bound { LOWER = 0,\n+\t\t\t UPPER = 1 };\n+\tBound bound;\n+\tunsigned int channel;\n+\tdouble factor;\n+\tint read(const libcamera::YamlObject ¶ms);\n+};\n+\n struct AgcConfig {\n \tint read(const libcamera::YamlObject ¶ms);\n \tstd::map meteringModes;\n \tstd::map exposureModes;\n \tstd::map constraintModes;\n+\tstd::vector channelConstraints;\n \tPwl yTarget;\n \tdouble speed;\n \tuint16_t startupFrames;\n","prefixes":["libcamera-devel","v3","4/5"]}