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{ "id": 21191, "url": "https://patchwork.libcamera.org/api/patches/21191/?format=api", "web_url": "https://patchwork.libcamera.org/patch/21191/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/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": "<20240906120927.4071508-19-mzamazal@redhat.com>", "date": "2024-09-06T12:09:27", "name": "[v6,18/18] libcamera: software_isp: Update black level only on exposure changes", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "83c92f47e97e6f58f5029f4b37abbc2d07a9bc50", "submitter": { "id": 177, "url": "https://patchwork.libcamera.org/api/people/177/?format=api", "name": "Milan Zamazal", "email": "mzamazal@redhat.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/21191/mbox/", "series": [ { "id": 4566, "url": "https://patchwork.libcamera.org/api/series/4566/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4566", "date": "2024-09-06T12:09:09", "name": "Software ISP refactoring", "version": 6, "mbox": "https://patchwork.libcamera.org/series/4566/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/21191/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/21191/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 92B33C324C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri, 6 Sep 2024 12:10:57 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 66D1363509;\n\tFri, 6 Sep 2024 14:10:56 +0200 (CEST)", "from us-smtp-delivery-124.mimecast.com\n\t(us-smtp-delivery-124.mimecast.com [170.10.133.124])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id D859F634F7\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 6 Sep 2024 14:10:37 +0200 (CEST)", "from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com\n\t(ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63])\n\tby relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3,\n\tcipher=TLS_AES_256_GCM_SHA384) id us-mta-52-C62arktWNY-nVRFYXA0VQw-1;\n\tFri, 06 Sep 2024 08:10:34 -0400", "from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com\n\t(mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com\n\t[10.30.177.15])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\tkey-exchange X25519 server-signature RSA-PSS (2048 bits)\n\tserver-digest SHA256) (No client certificate requested)\n\tby mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix)\n\twith ESMTPS id 9C6C7195395C; Fri, 6 Sep 2024 12:10:33 +0000 (UTC)", "from nuthatch.redhat.com (unknown [10.45.224.65])\n\tby mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix)\n\twith ESMTP id AA534195608A; Fri, 6 Sep 2024 12:10:31 +0000 (UTC)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=redhat.com header.i=@redhat.com\n\theader.b=\"BIIa1Rx6\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n\ts=mimecast20190719; t=1725624636;\n\th=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n\tto:to:cc:cc:mime-version:mime-version:content-type:content-type:\n\tcontent-transfer-encoding:content-transfer-encoding:\n\tin-reply-to:in-reply-to:references:references;\n\tbh=S4zg3vXRb1p9ZyQSNmXLGi6uQFR4qpnCnu1rzU25Tow=;\n\tb=BIIa1Rx6zTnYx8eH+26EOjqd3h3s8WXvrGTrdV/zIZVmX8Qyzy3aFnOSKTtv8Z+WSLyoB5\n\t2w5z+cLVvw2xpUskGdcf/QBGx+Bdrf+QXJM6Y8PSjs6mbQ+egielC+U0BqEAsT623RNiMs\n\t4nYWxjY2hflOa381q7pSDMsjhoBTuec=", "X-MC-Unique": "C62arktWNY-nVRFYXA0VQw-1", "From": "Milan Zamazal <mzamazal@redhat.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Milan Zamazal <mzamazal@redhat.com>,\n\tUmang Jain <umang.jain@ideasonboard.com>,\n\tLaurent Pinchart <laurent.pinchart@ideasonboard.com>,\n\tDaniel Scally <dan.scally@ideasonboard.com>", "Subject": "[PATCH v6 18/18] libcamera: software_isp: Update black level only on\n\texposure changes", "Date": "Fri, 6 Sep 2024 14:09:27 +0200", "Message-ID": "<20240906120927.4071508-19-mzamazal@redhat.com>", "In-Reply-To": "<20240906120927.4071508-1-mzamazal@redhat.com>", "References": "<20240906120927.4071508-1-mzamazal@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.0 on 10.30.177.15", "X-Mimecast-Spam-Score": "0", "X-Mimecast-Originator": "redhat.com", "Content-Transfer-Encoding": "8bit", "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": "<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": "The black level is likely to get updated, if ever, only after exposure\nor gain changes. Don't compute its possible updates if exposure and\ngain are unchanged.\n\nIt's probably not worth trying to implement something more\nsophisticated. Better to spend the effort on supporting tuning files.\n\nSigned-off-by: Milan Zamazal <mzamazal@redhat.com>\n---\n src/ipa/simple/algorithms/blc.cpp | 9 ++++++++-\n src/ipa/simple/algorithms/blc.h | 4 ++++\n 2 files changed, 12 insertions(+), 1 deletion(-)", "diff": "diff --git a/src/ipa/simple/algorithms/blc.cpp b/src/ipa/simple/algorithms/blc.cpp\nindex 1ceae85d..5e0a36d9 100644\n--- a/src/ipa/simple/algorithms/blc.cpp\n+++ b/src/ipa/simple/algorithms/blc.cpp\n@@ -30,10 +30,15 @@ int BlackLevel::init(IPAContext &context,\n \n void BlackLevel::process(IPAContext &context,\n \t\t\t [[maybe_unused]] const uint32_t frame,\n-\t\t\t [[maybe_unused]] IPAFrameContext &frameContext,\n+\t\t\t IPAFrameContext &frameContext,\n \t\t\t const SwIspStats *stats,\n \t\t\t [[maybe_unused]] ControlList &metadata)\n {\n+\tif (frameContext.sensor.exposure == exposure_ &&\n+\t frameContext.sensor.gain == gain_) {\n+\t\treturn;\n+\t}\n+\n \tconst SwIspStats::Histogram &histogram = stats->yHistogram;\n \n \t/*\n@@ -54,6 +59,8 @@ void BlackLevel::process(IPAContext &context,\n \t\tif (seen >= pixelThreshold) {\n \t\t\tcontext.activeState.blc.level =\n \t\t\t\tstatic_cast<double>(i) / SwIspStats::kYHistogramSize;\n+\t\t\texposure_ = frameContext.sensor.exposure;\n+\t\t\tgain_ = frameContext.sensor.gain;\n \t\t\tLOG(IPASoftBL, Debug)\n \t\t\t\t<< \"Auto-set black level: \"\n \t\t\t\t<< i << \"/\" << SwIspStats::kYHistogramSize\ndiff --git a/src/ipa/simple/algorithms/blc.h b/src/ipa/simple/algorithms/blc.h\nindex c2140b4b..fc38375e 100644\n--- a/src/ipa/simple/algorithms/blc.h\n+++ b/src/ipa/simple/algorithms/blc.h\n@@ -25,6 +25,10 @@ public:\n \t\t IPAFrameContext &frameContext,\n \t\t const SwIspStats *stats,\n \t\t ControlList &metadata) override;\n+\n+private:\n+\tuint32_t exposure_;\n+\tdouble gain_;\n };\n \n } /* namespace ipa::soft::algorithms */\n", "prefixes": [ "v6", "18/18" ] }