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{ "id": 15051, "url": "https://patchwork.libcamera.org/api/1.1/covers/15051/?format=api", "web_url": "https://patchwork.libcamera.org/cover/15051/", "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": "<20211206152644.4863-1-laurent.pinchart@ideasonboard.com>", "date": "2021-12-06T15:26:42", "name": "[libcamera-devel,0/2] libcamera: Introduce utils::abs_diff()", "submitter": { "id": 2, "url": "https://patchwork.libcamera.org/api/1.1/people/2/?format=api", "name": "Laurent Pinchart", "email": "laurent.pinchart@ideasonboard.com" }, "mbox": "https://patchwork.libcamera.org/cover/15051/mbox/", "series": [ { "id": 2819, "url": "https://patchwork.libcamera.org/api/1.1/series/2819/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=2819", "date": "2021-12-06T15:26:42", "name": "libcamera: Introduce utils::abs_diff()", "version": 1, "mbox": "https://patchwork.libcamera.org/series/2819/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/covers/15051/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 16438BDB13\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 6 Dec 2021 15:27:18 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id C6FED60876;\n\tMon, 6 Dec 2021 16:27:17 +0100 (CET)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 9F0C160725\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 6 Dec 2021 16:27:16 +0100 (CET)", "from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 487A0EE\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 6 Dec 2021 16:27:16 +0100 (CET)" ], "Authentication-Results": "lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"HuOlJK5Z\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1638804436;\n\tbh=gVWCZydDSa/HjS8e+cxfkNjG9UHqytMMcAacRLITPcg=;\n\th=From:To:Subject:Date:From;\n\tb=HuOlJK5ZWR/So8YdGbx05vgxkg/SuRBCKBd6zMksw7QXb19l5lcmf0vq1al0t/RFJ\n\t+JEHYYsq8QT8JRmQfLnAV35jK18qA6N8LWlPgIomhG6SYI8thE1z8ZmlfvNDfiY10/\n\tN6dMvNygRVKzkdSQUCxzygQbPExhZuvljFex8W9A=", "From": "Laurent Pinchart <laurent.pinchart@ideasonboard.com>", "To": "libcamera-devel@lists.libcamera.org", "Date": "Mon, 6 Dec 2021 17:26:42 +0200", "Message-Id": "<20211206152644.4863-1-laurent.pinchart@ideasonboard.com>", "X-Mailer": "git-send-email 2.32.0", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH 0/2] libcamera: Introduce utils::abs_diff()", "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": "Hello,\n\nThe utils::abs_diff() function fixes integer overflow issues when\ncomputing the absolute difference of two values. See patch 1/2 for\ndetails, patch 2/2 then uses the function through the code base.\n\nLaurent Pinchart (2):\n libcamera: base: utils: Add abs_diff() utility function\n libcamera: Use utils::abs_diff()\n\n include/libcamera/base/utils.h | 9 +++++++++\n src/ipa/ipu3/algorithms/agc.cpp | 3 ++-\n src/ipa/ipu3/ipu3.cpp | 4 ++--\n src/ipa/rkisp1/algorithms/agc.cpp | 3 ++-\n src/libcamera/base/utils.cpp | 17 +++++++++++++++++\n src/libcamera/pipeline/ipu3/imgu.cpp | 4 ++--\n .../pipeline/raspberrypi/raspberrypi.cpp | 5 ++---\n 7 files changed, 36 insertions(+), 9 deletions(-)\n\n\nbase-commit: f8d2f17a3db5ac490d7b505253a98d6795c2b630" }