From patchwork Fri Aug 8 14:12:43 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Klug X-Patchwork-Id: 24076 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 E2D91BDCC1 for ; Fri, 8 Aug 2025 14:13:58 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 9C67A6922A; Fri, 8 Aug 2025 16:13:58 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="g2aKZd+0"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id BAEBC6921C for ; Fri, 8 Aug 2025 16:13:57 +0200 (CEST) Received: from ideasonboard.com (unknown [IPv6:2a00:6020:448c:6c00:3ea1:35ac:90da:a221]) by perceval.ideasonboard.com (Postfix) with UTF8SMTPSA id CCC7342D0; Fri, 8 Aug 2025 16:13:07 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1754662387; bh=jaSaTylteAf9BebnDZq8p7FGkbu3Unqpfr99GXpMpc8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g2aKZd+0oqrqcPH1Mwum3Z3uIZIi1neI2/zw28mRxe9WVXAbbvsXc2bdoF48CZ7nn TklueD9Qxt8oGK3080WtwbIpsVE25GoBeohs9Nayq7yw87wf0mmnsLzjpTyzjlK0zy ZtfBUIlaUenY72NMDjgENQYC4/b5xX9E8GRXhFK4= From: Stefan Klug To: libcamera-devel@lists.libcamera.org Cc: Stefan Klug Subject: [PATCH v2 05/16] libipa: exposure_mode_helper: Remove double calculation of lastStageGain Date: Fri, 8 Aug 2025 16:12:43 +0200 Message-ID: <20250808141315.413839-6-stefan.klug@ideasonboard.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250808141315.413839-1-stefan.klug@ideasonboard.com> References: <20250808141315.413839-1-stefan.klug@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" lastStageGain gets recalculated unconditionally even though it is the stageGain of the last stage. Refactor for increased simplicity and efficiency. Signed-off-by: Stefan Klug Reviewed-by: Kieran Bingham Reviewed-by: Daniel Scally --- src/ipa/libipa/exposure_mode_helper.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/ipa/libipa/exposure_mode_helper.cpp b/src/ipa/libipa/exposure_mode_helper.cpp index d0a61908c966..3c758851679f 100644 --- a/src/ipa/libipa/exposure_mode_helper.cpp +++ b/src/ipa/libipa/exposure_mode_helper.cpp @@ -198,10 +198,10 @@ ExposureModeHelper::splitExposure(utils::Duration exposure) const utils::Duration exposureTime; double stageGain = 1.0; + double lastStageGain = 1.0; double gain; for (unsigned int stage = 0; stage < gains_.size(); stage++) { - double lastStageGain = stage == 0 ? 1.0 : clampGain(gains_[stage - 1]); utils::Duration stageExposureTime = clampExposureTime(exposureTimes_[stage]); stageGain = clampGain(gains_[stage]); @@ -228,6 +228,8 @@ ExposureModeHelper::splitExposure(utils::Duration exposure) const return { exposureTime, gain, exposure / (exposureTime * gain) }; } + + lastStageGain = stageGain; } /*