From patchwork Mon Aug 24 09:13:47 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= X-Patchwork-Id: 28061 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id BD251C3339 for ; Mon, 24 Aug 2026 09:14:57 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 4981068426; Mon, 24 Aug 2026 11:14:57 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="lL+dpySj"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 825DE683FD for ; Mon, 24 Aug 2026 11:14:18 +0200 (CEST) Received: from pb-laptop.local (185.221.143.32.nat.pool.zt.hu [185.221.143.32]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 34090C25; Mon, 24 Aug 2026 11:12:54 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1787562774; bh=MfrEGRVoLpJBrSSnsTyKzH8nDIZ3YT3BgN2W1HQK6+U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lL+dpySjqRNjPEWbHVGabW0ZUcbFWjmslF/6Mt9yn1m9XSFH8Xc3EwrqXz/DRA9MQ OTEqZ89ISV/ZIq64xKL1vO8RcFlTIHOu2PpXqT7lbyTNUEl9niZ1qDfb5t3xuzU8sA WCJIxRm+PtZGqQlBaCDM3fgqR2eYHqYC8u/90IPg= From: =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= To: libcamera-devel@lists.libcamera.org Cc: Jacopo Mondi , Stefan Klug Subject: [PATCH v8 28/47] ipa: libipa: agc: Use minimum line length Date: Mon, 24 Aug 2026 11:13:47 +0200 Message-ID: <20260824091407.502020-29-barnabas.pocze@ideasonboard.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260824091407.502020-1-barnabas.pocze@ideasonboard.com> References: <20260824091407.502020-1-barnabas.pocze@ideasonboard.com> MIME-Version: 1.0 X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" `IPACameraSensorInfo::minLineLength` already contains the minimum line length, taking the output format and minimum horizontal blanking into account. Furthermore, the `CameraSensor` implementations already set the horizontal blanking to the minimum when initializing the sensor. And finally the line duration is already calculated with the minimum line length. So use the minimum for the frame duration calculations as well. Signed-off-by: Barnabás Pőcze Reviewed-by: Jacopo Mondi Reviewed-by: Stefan Klug --- src/ipa/libipa/agc.cpp | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/src/ipa/libipa/agc.cpp b/src/ipa/libipa/agc.cpp index fd0b3529ac..299fa8cb0c 100644 --- a/src/ipa/libipa/agc.cpp +++ b/src/ipa/libipa/agc.cpp @@ -341,10 +341,11 @@ int AgcAlgorithm::init(const ValueNode &tuningData, const ConfigurationParams &c int AgcAlgorithm::configure(agc::Session &session, agc::ActiveState &state, const ConfigurationParams &config) { + const uint32_t lineLength = config.sensorInfo.minLineLength; + session = {}; session.autoAllowed = config.autoAllowed; - session.lineDuration = - config.sensorInfo.minLineLength * 1.0s / config.sensorInfo.pixelRate; + session.lineDuration = lineLength * 1.0s / config.sensorInfo.pixelRate; session.sensor.outputSize = config.sensorInfo.outputSize; const double lineDurationUs = session.lineDuration.get(); @@ -377,9 +378,6 @@ int AgcAlgorithm::configure(agc::Session &session, agc::ActiveState &state, * The frame length is computed assuming a fixed line length combined * with the vertical frame sizes. */ - const ControlInfo &v4l2HBlank = config.sensorControls.find(V4L2_CID_HBLANK)->second; - uint32_t hblank = v4l2HBlank.def().get(); - uint32_t lineLength = config.sensorInfo.outputSize.width + hblank; const ControlInfo &v4l2VBlank = config.sensorControls.find(V4L2_CID_VBLANK)->second; std::array frameHeights{