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{ "id": 26169, "url": "https://patchwork.libcamera.org/api/1.1/covers/26169/?format=api", "web_url": "https://patchwork.libcamera.org/cover/26169/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/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": "<20260216203034.27558-1-mzamazal@redhat.com>", "date": "2026-02-16T20:30:19", "name": "[RFC,v2,00/14] Software ISP: Share params and stats buffers", "submitter": { "id": 177, "url": "https://patchwork.libcamera.org/api/1.1/people/177/?format=api", "name": "Milan Zamazal", "email": "mzamazal@redhat.com" }, "mbox": "https://patchwork.libcamera.org/cover/26169/mbox/", "series": [ { "id": 5795, "url": "https://patchwork.libcamera.org/api/1.1/series/5795/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5795", "date": "2026-02-16T20:30:19", "name": "Software ISP: Share params and stats buffers", "version": 2, "mbox": "https://patchwork.libcamera.org/series/5795/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/26169/comments/", "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 448D1C0DA4\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 16 Feb 2026 20:30:45 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 7B8AF62200;\n\tMon, 16 Feb 2026 21:30:44 +0100 (CET)", "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 670EF62084\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 16 Feb 2026 21:30:43 +0100 (CET)", "from mx-prod-mc-03.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-652-gRMIK9v_M8SvMGhuAu09wA-1;\n\tMon, 16 Feb 2026 15:30:40 -0500", "from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com\n\t(mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com\n\t[10.30.177.93])\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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix)\n\twith ESMTPS\n\tid 597A21956046 for <libcamera-devel@lists.libcamera.org>;\n\tMon, 16 Feb 2026 20:30:39 +0000 (UTC)", "from mzamazal-thinkpadp1gen7.tpbc.com (unknown [10.44.32.25])\n\tby mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix)\n\twith ESMTP id 23F9F1800464; Mon, 16 Feb 2026 20:30:37 +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=\"LuFSujoo\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n\ts=mimecast20190719; t=1771273842;\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\tbh=AdLbeIRFuL/8ulm/igFGYpAMqWWaqs1z//8dVBMhGRE=;\n\tb=LuFSujooNY7WTM1M+dBK9vSVTbK+AvYVVQZWBWQvUbyIW7xuqYdR3Q2UBXVKp0sUKDX0z6\n\tkpnPmkkiPzUZE0YbGnLUiAjuiOqQSwcMgijWmfxa66ERIzQ6YDAvqZADMnOAwGbGXufyLp\n\tBh0omQqzuyytBkesCOpMqt96YTEQcg8=", "X-MC-Unique": "gRMIK9v_M8SvMGhuAu09wA-1", "X-Mimecast-MFC-AGG-ID": "gRMIK9v_M8SvMGhuAu09wA_1771273839", "From": "Milan Zamazal <mzamazal@redhat.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Milan Zamazal <mzamazal@redhat.com>", "Subject": "[RFC PATCH v2 00/14] Software ISP: Share params and stats buffers", "Date": "Mon, 16 Feb 2026 21:30:19 +0100", "Message-ID": "<20260216203034.27558-1-mzamazal@redhat.com>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.4.1 on 10.30.177.93", "X-Mimecast-Spam-Score": "0", "X-Mimecast-MFC-PROC-ID": "ssQXWEwKvdOAlPgI4vqKMUP5706uPwBjWq1uJ6SvVJQ_1771273839", "X-Mimecast-Originator": "redhat.com", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "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": "This patch series implements parameters and statistics buffer sharing in\nsoftware ISP. This is a rebase of an old patch series, adjusted for the\ncurrent master and GPU ISP. It implements the following software ISP\nTODOs:\n\n- 2. Reconsider stats sharing\n- 5. Store ISP parameters in per-frame buffers\n\nThe first part of the patches deals with parameters buffers, the next\npart with statistics buffers.\n\nIt’s a way to make params correspond to the respective frames, which is\ncurrently not the case with software ISP. But with the plans to compute\nstats on a GPU and make everything synchronous, the only useful patches\nfrom this series may eventually be those dropping the software ISP\nTODOs. Which means I don’t plan to work on the patches further unless\nwe decide they are needed.\n\nChanges in v2:\n- Rebase on master and make it working with GPU ISP.\n\nMilan Zamazal (14):\n libcamera: software_isp: Remove initializer_list include\n libcamera: software_isp: Introduce arguments for parameters buffers\n libcamera: software_isp: Separate allocation of the parameters buffer\n libcamera: software_isp: Track unused parameters buffers\n libcamera: software_isp: Allocation of multiple params buffers\n libcamera: software_isp: Allocate multiple parameters buffers\n libcamera: software_isp: Use multiple parameters buffers in IPA\n libcamera: software_isp: Share parameters buffers with debayering\n libcamera: software_isp: Remove per-frame params buffers TODO item\n libcamera: software_isp: Introduce arguments for statistics buffers\n libcamera: software_isp: Allocate statistics buffers\n libcamera: software_isp: Track statistics buffers\n libcamera: software_isp: Share statistics buffers with IPA\n libcamera: software_isp: Remove stats-sharing TODO item\n\n .../internal/software_isp/software_isp.h | 21 ++-\n .../internal/software_isp/swstats_cpu.h | 21 +--\n include/libcamera/ipa/soft.mojom | 11 +-\n src/ipa/simple/soft_simple.cpp | 94 +++++++------\n src/libcamera/pipeline/simple/simple.cpp | 12 +-\n src/libcamera/software_isp/TODO | 45 -------\n src/libcamera/software_isp/debayer.cpp | 42 ++++--\n src/libcamera/software_isp/debayer.h | 12 +-\n src/libcamera/software_isp/debayer_cpu.cpp | 79 ++++++-----\n src/libcamera/software_isp/debayer_cpu.h | 16 ++-\n src/libcamera/software_isp/debayer_egl.cpp | 18 ++-\n src/libcamera/software_isp/debayer_egl.h | 11 +-\n src/libcamera/software_isp/software_isp.cpp | 126 +++++++++++++++---\n src/libcamera/software_isp/swstats_cpu.cpp | 66 ++++-----\n 14 files changed, 336 insertions(+), 238 deletions(-)" }