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{ "id": 14449, "url": "https://patchwork.libcamera.org/api/patches/14449/?format=api", "web_url": "https://patchwork.libcamera.org/patch/14449/", "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": "<20211102124657.1038011-1-naush@raspberrypi.com>", "date": "2021-11-02T12:46:57", "name": "[libcamera-devel] pipeline: raspberrypi: Fix rounding issue in findBestFormat()", "commit_ref": "06008c6e81e8d62c3ebf45025448a3137b76d394", "pull_url": null, "state": "accepted", "archived": false, "hash": "8ebe19d17051d74678fcab1f06528a4c6d837dc5", "submitter": { "id": 34, "url": "https://patchwork.libcamera.org/api/people/34/?format=api", "name": "Naushir Patuck", "email": "naush@raspberrypi.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/14449/mbox/", "series": [ { "id": 2686, "url": "https://patchwork.libcamera.org/api/series/2686/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=2686", "date": "2021-11-02T12:46:57", "name": "[libcamera-devel] pipeline: raspberrypi: Fix rounding issue in findBestFormat()", "version": 1, "mbox": "https://patchwork.libcamera.org/series/2686/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/14449/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/14449/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 1F1F5BF415\n\tfor <parsemail@patchwork.libcamera.org>;\n\tTue, 2 Nov 2021 12:47:35 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 4C92660325;\n\tTue, 2 Nov 2021 13:47:34 +0100 (CET)", "from mail-wm1-x331.google.com (mail-wm1-x331.google.com\n\t[IPv6:2a00:1450:4864:20::331])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 5A009600B8\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 2 Nov 2021 13:47:33 +0100 (CET)", "by mail-wm1-x331.google.com with SMTP id\n\tc71-20020a1c9a4a000000b0032cdcc8cbafso1992030wme.3\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tTue, 02 Nov 2021 05:47:33 -0700 (PDT)", "from naush-laptop.pitowers.org\n\t([2a00:1098:3142:14:34fe:b3d0:b6e2:78dc])\n\tby smtp.gmail.com with ESMTPSA id\n\tu10sm21495242wrs.5.2021.11.02.05.47.31\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tTue, 02 Nov 2021 05:47:31 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=raspberrypi.com header.i=@raspberrypi.com\n\theader.b=\"ea0lcWrz\"; 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\n\tTue, 02 Nov 2021 05:47:32 -0700 (PDT)", "From": "Naushir Patuck <naush@raspberrypi.com>", "To": "libcamera-devel@lists.libcamera.org", "Date": "Tue, 2 Nov 2021 12:46:57 +0000", "Message-Id": "<20211102124657.1038011-1-naush@raspberrypi.com>", "X-Mailer": "git-send-email 2.25.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH] pipeline: raspberrypi: Fix rounding issue\n\tin findBestFormat()", "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 aspect ratio calculation divides two integer values then casts to a double.\nThis might reduce precision when scoring for aspect rato differences.\n\nFix this by casting the integer to a double before the division.\n\nReported-by: Coverity CID=361652\nSigned-off-by: Naushir Patuck <naush@raspberrypi.com>\n---\n src/libcamera/pipeline/raspberrypi/raspberrypi.cpp | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)", "diff": "diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp\nindex 44760093f7ab..5e1f227398a9 100644\n--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp\n+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp\n@@ -141,7 +141,7 @@ V4L2SubdeviceFormat findBestFormat(const SensorFormats &formatsMap, const Size &\n \n \t\tfor (const Size &size : iter.second) {\n \t\t\tdouble reqAr = static_cast<double>(req.width) / req.height;\n-\t\t\tdouble fmtAr = size.width / size.height;\n+\t\t\tdouble fmtAr = static_cast<double>(size.width) / size.height;\n \n \t\t\t/* Score the dimensions for closeness. */\n \t\t\tscore = scoreFormat(req.width, size.width);\n", "prefixes": [ "libcamera-devel" ] }