From patchwork Thu Jan 22 16:19:30 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Milan Zamazal X-Patchwork-Id: 25937 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 88B4FC327D for ; Thu, 22 Jan 2026 16:20:42 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 1EC7761FD4; Thu, 22 Jan 2026 17:20:42 +0100 (CET) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="OkA/Domx"; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id CAE3161FD4 for ; 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Thu, 22 Jan 2026 16:20:30 +0000 (UTC) Received: from mzamazal-thinkpadp1gen7.tpbc.com (unknown [10.45.224.97]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 03D6A1800240; Thu, 22 Jan 2026 16:20:28 +0000 (UTC) From: Milan Zamazal To: libcamera-devel@lists.libcamera.org Cc: Milan Zamazal , Kieran Bingham , =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= Subject: [PATCH v4 10/15] libcamera: ipa: simple: Apply gain matrix in awb Date: Thu, 22 Jan 2026 17:19:30 +0100 Message-ID: <20260122161935.208562-11-mzamazal@redhat.com> In-Reply-To: <20260122161935.208562-1-mzamazal@redhat.com> References: <20260122161935.208562-1-mzamazal@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: ZmJIyXxhNCQkVg_5T-muG6FW-qsT8LDJEllXweVM8YM_1769098830 X-Mimecast-Originator: redhat.com content-type: text/plain; charset="US-ASCII"; x-default=true 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" Now, when we have a combined matrix, we can apply AWB gains to it directly in awb.cpp. Signed-off-by: Milan Zamazal --- src/ipa/simple/algorithms/awb.cpp | 7 ++++++- src/ipa/simple/algorithms/lut.cpp | 5 +---- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/src/ipa/simple/algorithms/awb.cpp b/src/ipa/simple/algorithms/awb.cpp index a391359fb..4d2f1df15 100644 --- a/src/ipa/simple/algorithms/awb.cpp +++ b/src/ipa/simple/algorithms/awb.cpp @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: LGPL-2.1-or-later */ /* - * Copyright (C) 2024, Red Hat Inc. + * Copyright (C) 2024-2025 Red Hat Inc. * * Auto white balance */ @@ -40,6 +40,11 @@ void Awb::prepare(IPAContext &context, [[maybe_unused]] DebayerParams *params) { auto &gains = context.activeState.awb.gains; + Matrix gainMatrix = { { gains.r(), 0, 0, + 0, gains.g(), 0, + 0, 0, gains.b() } }; + context.activeState.combinedMatrix = + context.activeState.combinedMatrix * gainMatrix; /* Just report, the gains are applied in LUT algorithm. */ frameContext.gains.red = gains.r(); frameContext.gains.blue = gains.b(); diff --git a/src/ipa/simple/algorithms/lut.cpp b/src/ipa/simple/algorithms/lut.cpp index 9740f8c8d..d8e92c613 100644 --- a/src/ipa/simple/algorithms/lut.cpp +++ b/src/ipa/simple/algorithms/lut.cpp @@ -107,10 +107,7 @@ void Lut::prepare(IPAContext &context, params->blue[i] = gammaTable[static_cast(lutGains.b())]; } } else if (context.activeState.matrixChanged || gammaUpdateNeeded) { - Matrix gainMatrix = { { gains.r(), 0, 0, - 0, gains.g(), 0, - 0, 0, gains.b() } }; - auto matrix = context.activeState.combinedMatrix * gainMatrix; + auto &matrix = context.activeState.combinedMatrix; auto &red = params->redCcm; auto &green = params->greenCcm; auto &blue = params->blueCcm;