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{ "id": 23861, "url": "https://patchwork.libcamera.org/api/1.1/patches/23861/?format=api", "web_url": "https://patchwork.libcamera.org/patch/23861/", "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": "<20250721074853.1463358-3-naush@raspberrypi.com>", "date": "2025-07-21T07:47:22", "name": "[v2,2/7] ipa: rpi: agc: Make the maximum digital gain configurable", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "1cf0d98731196874d3e02eaa0b6dbd2f90890ef7", "submitter": { "id": 34, "url": "https://patchwork.libcamera.org/api/1.1/people/34/?format=api", "name": "Naushir Patuck", "email": "naush@raspberrypi.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/23861/mbox/", "series": [ { "id": 5303, "url": "https://patchwork.libcamera.org/api/1.1/series/5303/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5303", "date": "2025-07-21T07:47:20", "name": "Raspberry Pi AEC/AGC update", "version": 2, "mbox": "https://patchwork.libcamera.org/series/5303/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/23861/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/23861/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 3A83FBDCC1\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 21 Jul 2025 07:49:06 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id E0F1B68FD3;\n\tMon, 21 Jul 2025 09:49:00 +0200 (CEST)", "from mail-wr1-x436.google.com (mail-wr1-x436.google.com\n\t[IPv6:2a00:1450:4864:20::436])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 5EC8F61509\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 21 Jul 2025 09:48:57 +0200 (CEST)", "by mail-wr1-x436.google.com with SMTP id\n\tffacd0b85a97d-3a4eb4dfd8eso606720f8f.2\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 21 Jul 2025 00:48:57 -0700 (PDT)", "from NAUSH-P-DELL.pitowers.org ([93.93.133.154])\n\tby smtp.gmail.com with ESMTPSA id\n\t5b1f17b1804b1-4562e802afasm151101765e9.12.2025.07.21.00.48.56\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tMon, 21 Jul 2025 00:48:56 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com; 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\n\tMon, 21 Jul 2025 00:48:56 -0700 (PDT)", "From": "Naushir Patuck <naush@raspberrypi.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "David Plowman <david.plowman@raspberrypi.com>,\n\tNaushir Patuck <naush@raspberrypi.com>", "Subject": "[PATCH v2 2/7] ipa: rpi: agc: Make the maximum digital gain\n\tconfigurable", "Date": "Mon, 21 Jul 2025 08:47:22 +0100", "Message-ID": "<20250721074853.1463358-3-naush@raspberrypi.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20250721074853.1463358-1-naush@raspberrypi.com>", "References": "<20250721074853.1463358-1-naush@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": "From: David Plowman <david.plowman@raspberrypi.com>\n\nThe maximum allowed digital gain is hard-coded to 4. Make it a\nconfigurable parameter.\n\nSigned-off-by: David Plowman <david.plowman@raspberrypi.com>\nSigned-off-by: Naushir Patuck <naush@raspberrypi.com>\nReviewed-by: Naushir Patuck <naush@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 ae0cb148893a..f6a191d50fb3 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 fa697e6fa57d..e3475d864b0b 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": [ "v2", "2/7" ] }