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{ "id": 23585, "url": "https://patchwork.libcamera.org/api/1.1/patches/23585/?format=api", "web_url": "https://patchwork.libcamera.org/patch/23585/", "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": "<20250617082956.5699-3-david.plowman@raspberrypi.com>", "date": "2025-06-17T08:29:50", "name": "[2/7] ipa: rpi: agc: Make the maximum digital gain configurable", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "1cf0d98731196874d3e02eaa0b6dbd2f90890ef7", "submitter": { "id": 42, "url": "https://patchwork.libcamera.org/api/1.1/people/42/?format=api", "name": "David Plowman", "email": "david.plowman@raspberrypi.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/23585/mbox/", "series": [ { "id": 5225, "url": "https://patchwork.libcamera.org/api/1.1/series/5225/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5225", "date": "2025-06-17T08:29:48", "name": "Raspberry Pi AEC/AGC update", "version": 1, "mbox": "https://patchwork.libcamera.org/series/5225/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/23585/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/23585/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 3D042BDE6B\n\tfor <parsemail@patchwork.libcamera.org>;\n\tTue, 17 Jun 2025 08:30:13 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 6B52868DD6;\n\tTue, 17 Jun 2025 10:30:06 +0200 (CEST)", "from mail-wr1-x433.google.com (mail-wr1-x433.google.com\n\t[IPv6:2a00:1450:4864:20::433])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id C3B6468DCB\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 17 Jun 2025 10:30:02 +0200 (CEST)", "by mail-wr1-x433.google.com with SMTP id\n\tffacd0b85a97d-3a4f72cba73so4399396f8f.1\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 17 Jun 2025 01:30:02 -0700 (PDT)", "from raspberrypi.pitowers.org\n\t([2a00:1098:3142:1f:ffc9:aff6:7f7f:893b])\n\tby smtp.gmail.com with ESMTPSA id\n\t5b1f17b1804b1-4532e259108sm166062955e9.32.2025.06.17.01.30.01\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tTue, 17 Jun 2025 01:30:01 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com; 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\n\tTue, 17 Jun 2025 01:30:01 -0700 (PDT)", "From": "David Plowman <david.plowman@raspberrypi.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "David Plowman <david.plowman@raspberrypi.com>", "Subject": "[PATCH 2/7] ipa: rpi: agc: Make the maximum digital gain\n\tconfigurable", "Date": "Tue, 17 Jun 2025 09:29:50 +0100", "Message-Id": "<20250617082956.5699-3-david.plowman@raspberrypi.com>", "X-Mailer": "git-send-email 2.39.5", "In-Reply-To": "<20250617082956.5699-1-david.plowman@raspberrypi.com>", "References": "<20250617082956.5699-1-david.plowman@raspberrypi.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": "The maximum allowed digital gain is hard-coded to 4. Make it a\nconfigurable parameter.\n\nSigned-off-by: David Plowman <david.plowman@raspberrypi.com>\n---\n src/ipa/rpi/controller/rpi/agc_channel.cpp | 5 ++++-\n src/ipa/rpi/controller/rpi/agc_channel.h | 1 +\n 2 files changed, 5 insertions(+), 1 deletion(-)", "diff": "diff --git a/src/ipa/rpi/controller/rpi/agc_channel.cpp b/src/ipa/rpi/controller/rpi/agc_channel.cpp\nindex a87dc194..d7fff2fc 100644\n--- a/src/ipa/rpi/controller/rpi/agc_channel.cpp\n+++ b/src/ipa/rpi/controller/rpi/agc_channel.cpp\n@@ -260,6 +260,8 @@ int AgcConfig::read(const libcamera::YamlObject ¶ms)\n \n \tdesaturate = params[\"desaturate\"].get<int>(1);\n \n+\tmaxDigitalGain = params[\"max_digital_gain\"].get<double>(4.0);\n+\n \treturn 0;\n }\n \n@@ -508,7 +510,8 @@ void AgcChannel::prepare(Metadata *imageMetadata)\n \t\t\t\t * Never ask for a gain < 1.0, and also impose\n \t\t\t\t * some upper limit. Make it customisable?\n \t\t\t\t */\n-\t\t\t\tprepareStatus.digitalGain = std::max(1.0, std::min(digitalGain, 4.0));\n+\t\t\t\tprepareStatus.digitalGain = std::max(1.0, std::min(digitalGain,\n+\t\t\t\t\t\t\t\t\t\t config_.maxDigitalGain));\n \t\t\t\tLOG(RPiAgc, Debug) << \"Actual exposure \" << actualExposure;\n \t\t\t\tLOG(RPiAgc, Debug) << \"Use digitalGain \" << prepareStatus.digitalGain;\n \t\t\t\tLOG(RPiAgc, Debug) << \"Effective exposure \"\ndiff --git a/src/ipa/rpi/controller/rpi/agc_channel.h b/src/ipa/rpi/controller/rpi/agc_channel.h\nindex fa697e6f..e3475d86 100644\n--- a/src/ipa/rpi/controller/rpi/agc_channel.h\n+++ b/src/ipa/rpi/controller/rpi/agc_channel.h\n@@ -78,6 +78,7 @@ struct AgcConfig {\n \tdouble defaultAnalogueGain;\n \tdouble stableRegion;\n \tbool desaturate;\n+\tdouble maxDigitalGain;\n };\n \n class AgcChannel\n", "prefixes": [ "2/7" ] }