From patchwork Thu Aug 15 08:16:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Milan Zamazal X-Patchwork-Id: 20931 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 39D13C32D8 for ; Thu, 15 Aug 2024 08:17:44 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id AC1B8633D8; Thu, 15 Aug 2024 10:17:43 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="B63RWCtY"; 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 234D6633D4 for ; Thu, 15 Aug 2024 10:17:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1723709859; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=G6Rb7ZNQHHJHzus5nxcQH64kx4ElvfE8MPFWA9uBZ+E=; b=B63RWCtYQ/lhc4toVsy7XQabFF0qe3f6ZwnUDjHY7Q2drCBoHohkYIegsh5OL5ydFGGTxk ztTjs0bVZ1aYz1L9Owwh+b3t+XeHXgTIJdCkPqPsjRryJ9+/1CbeuO1azfJxxPh8kCfYji Py2ecpQQSPPo02QBWf8RseRtyEQ4PyI= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-308-sJGT8pB1M-iRG174z0TLeg-1; Thu, 15 Aug 2024 04:17:36 -0400 X-MC-Unique: sJGT8pB1M-iRG174z0TLeg-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 4D4081955D4D; Thu, 15 Aug 2024 08:17:34 +0000 (UTC) Received: from nuthatch.redhat.com (unknown [10.45.225.128]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 868DA19560A3; Thu, 15 Aug 2024 08:17:32 +0000 (UTC) From: Milan Zamazal To: libcamera-devel@lists.libcamera.org Cc: Milan Zamazal , Umang Jain , Laurent Pinchart , Daniel Scally Subject: [PATCH v4 18/18] libcamera: software_isp: Update black level only on exposure changes Date: Thu, 15 Aug 2024 10:16:22 +0200 Message-ID: <20240815081622.174210-19-mzamazal@redhat.com> In-Reply-To: <20240815081622.174210-1-mzamazal@redhat.com> References: <20240815081622.174210-1-mzamazal@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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" The black level is likely to get updated, if ever, only after exposure or gain changes. Don't compute its possible updates if exposure and gain are unchanged. It's probably not worth trying to implement something more sophisticated. Better to spend the effort on supporting tuning files. Signed-off-by: Milan Zamazal --- src/ipa/simple/algorithms/blc.cpp | 9 ++++++++- src/ipa/simple/algorithms/blc.h | 4 ++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/src/ipa/simple/algorithms/blc.cpp b/src/ipa/simple/algorithms/blc.cpp index ab7e7dd9..d01c2c14 100644 --- a/src/ipa/simple/algorithms/blc.cpp +++ b/src/ipa/simple/algorithms/blc.cpp @@ -30,10 +30,15 @@ int BlackLevel::init(IPAContext &context, void BlackLevel::process(IPAContext &context, [[maybe_unused]] const uint32_t frame, - [[maybe_unused]] IPAFrameContext &frameContext, + IPAFrameContext &frameContext, const SwIspStats *stats, [[maybe_unused]] ControlList &metadata) { + if (frameContext.sensor.exposure == exposure_ && + frameContext.sensor.gain == gain_) { + return; + } + const SwIspStats::Histogram &histogram = stats->yHistogram; /* @@ -54,6 +59,8 @@ void BlackLevel::process(IPAContext &context, if (seen >= pixelThreshold) { context.activeState.black.level = static_cast(i) / SwIspStats::kYHistogramSize; + exposure_ = frameContext.sensor.exposure; + gain_ = frameContext.sensor.gain; LOG(IPASoftBL, Debug) << "Auto-set black level: " << i << "/" << SwIspStats::kYHistogramSize diff --git a/src/ipa/simple/algorithms/blc.h b/src/ipa/simple/algorithms/blc.h index 2f73db52..9b9daab1 100644 --- a/src/ipa/simple/algorithms/blc.h +++ b/src/ipa/simple/algorithms/blc.h @@ -30,6 +30,10 @@ public: IPAFrameContext &frameContext, const SwIspStats *stats, ControlList &metadata) override; + +private: + uint32_t exposure_; + double gain_; }; } /* namespace ipa::soft::algorithms */