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{ "id": 15304, "url": "https://patchwork.libcamera.org/api/patches/15304/?format=api", "web_url": "https://patchwork.libcamera.org/patch/15304/", "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": "<20220131210757.105299-1-kieran.bingham@ideasonboard.com>", "date": "2022-01-31T21:07:57", "name": "[libcamera-devel,v2] v4l2: Provide libcamerify wrapper script", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "2ad605ce46ebca02088bef540ae0740ebe6de0c8", "submitter": { "id": 4, "url": "https://patchwork.libcamera.org/api/people/4/?format=api", "name": "Kieran Bingham", "email": "kieran.bingham@ideasonboard.com" }, "delegate": { "id": 11, "url": "https://patchwork.libcamera.org/api/users/11/?format=api", "username": "kbingham", "first_name": "Kieran", "last_name": "Bingham", "email": "kieran.bingham@ideasonboard.com" }, "mbox": "https://patchwork.libcamera.org/patch/15304/mbox/", "series": [ { "id": 2905, "url": "https://patchwork.libcamera.org/api/series/2905/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=2905", "date": "2022-01-31T21:07:57", "name": "[libcamera-devel,v2] v4l2: Provide libcamerify wrapper script", "version": 2, "mbox": "https://patchwork.libcamera.org/series/2905/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/15304/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/15304/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 17071BF415\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 31 Jan 2022 21:08:04 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 5A0B6609AF;\n\tMon, 31 Jan 2022 22:08:03 +0100 (CET)", "from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 5B5E4609AC\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 31 Jan 2022 22:08:01 +0100 (CET)", "from Monstersaurus.ksquared.org.uk.beta.tailscale.net\n\t(cpc89244-aztw30-2-0-cust3082.18-1.cable.virginm.net [86.31.172.11])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id E4D04D97;\n\tMon, 31 Jan 2022 22:08:00 +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=\"RuS5Z75Z\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1643663281;\n\tbh=sdvXI1mERAYn6dKCzuC+HynsGZb8TG//bQi5gjIC50k=;\n\th=From:To:Cc:Subject:Date:From;\n\tb=RuS5Z75ZZqDPMsKlh/J2yt7gPsUWPV0UFPF6/oEFDYnR4VL2QsE+Sx1WRJZzwgL24\n\tfMUvhNlxmt25iz/n4l8+IPamqaWkAOPsjcA226aZpvw9kF/MGuCUcu//cXP2qD6tf0\n\tJ+WwVwq7XNH7lm398VW5wvUiS+9/YyuvATSp3LCs=", "From": "Kieran Bingham <kieran.bingham@ideasonboard.com>", "To": "libcamera devel <libcamera-devel@lists.libcamera.org>", "Date": "Mon, 31 Jan 2022 21:07:57 +0000", "Message-Id": "<20220131210757.105299-1-kieran.bingham@ideasonboard.com>", "X-Mailer": "git-send-email 2.32.0", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH v2] v4l2: Provide libcamerify wrapper\n\tscript", "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": "Support easier usage of the v4l2 compatibility layer with a script that\nhandles the LD_PRELOAD for applications.\n\nThe wrapper can be prefixed to launch any application with the preload\nset:\n\n $ libcamerify v4l2-ctl --list-devices\n \\_SB_.PCI0.GP13.XHC0.RHUB.PRT4- (libcamera:0):\n \t/dev/video0\n\n platform/vimc.0 Sensor B (libcamera:1):\n \t/dev/video2\n \t/dev/video3\n \t/dev/video4\n\nSpecifying '-d' once before the command to run will enable V4L2Compat\nlayer debug output from libcamera.\n\nSpecifying '-d' twice will enable all debug levels from all libcamera\ncomponents and provide a very detailed log for analysis.\n\nSigned-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\n---\nv2:\n - rename to libcamerify (from libcamera-v4l2)\n - add extending support for setting debug log levels.\n\n\n src/v4l2/libcamerify.in | 34 ++++++++++++++++++++++++++++++++++\n src/v4l2/meson.build | 14 ++++++++++++++\n 2 files changed, 48 insertions(+)\n create mode 100755 src/v4l2/libcamerify.in", "diff": "diff --git a/src/v4l2/libcamerify.in b/src/v4l2/libcamerify.in\nnew file mode 100755\nindex 000000000000..161f5e49190e\n--- /dev/null\n+++ b/src/v4l2/libcamerify.in\n@@ -0,0 +1,34 @@\n+#!/bin/sh\n+\n+if [ \"$LD_PRELOAD\" = \"\" ] ; then\n+ LD_PRELOAD='@LIBCAMERA_V4L2_SO@'\n+else\n+ LD_PRELOAD=\"$LD_PRELOAD \"'@LIBCAMERA_V4L2_SO@'\n+fi\n+\n+export LD_PRELOAD\n+\n+help() {\n+\techo \"$0: Load an application with libcamera V4L2 compatibility layer preload\"\n+\techo \" $0 [OPTIONS...] executable [args]\"\n+\techo \" -d, --debug\tIncrease log level\"\n+\texit 1;\n+}\n+\n+debug=0\n+while [ $# -gt 0 ]; do\n+\tcase $1 in\n+\t\t-d|--debug) debug=$((debug+1));;\n+\t\t-h) help; break;;\n+\t\t--) shift; break;;\n+\t\t-*) echo \"Unrecognised option: $1\"; help; break;;\n+\t\t*) break;;\n+\tesac\n+\tshift\n+done\n+\n+[ $debug -gt 0 ] && loglevel=V4L2Compat:0\n+[ $debug -gt 1 ] && loglevel=0\n+[ \"$loglevel\" != \"\" ] && export LIBCAMERA_LOG_LEVELS=$loglevel\n+\n+exec \"$@\"\ndiff --git a/src/v4l2/meson.build b/src/v4l2/meson.build\nindex f78497b6799b..07ff9a6939d2 100644\n--- a/src/v4l2/meson.build\n+++ b/src/v4l2/meson.build\n@@ -33,3 +33,17 @@ v4l2_compat = shared_library('v4l2-compat',\n install : true,\n dependencies : [libcamera_private, libdl],\n cpp_args : v4l2_compat_cpp_args)\n+\n+# Provide a wrapper script to support easily loading applications with the V4L2\n+# adaptation layer\n+\n+config_h.set('LIBCAMERA_V4L2_SO', get_option('prefix') / get_option('libdir') / 'v4l2-compat.so')\n+\n+summary({\n+ 'LIBCAMERA_V4L2_SO' : config_h.get('LIBCAMERA_V4L2_SO'),\n+}, section : 'Paths')\n+\n+configure_file(input : 'libcamerify.in',\n+ output : 'libcamerify',\n+ configuration : config_h,\n+ install_dir : get_option('bindir'))\n", "prefixes": [ "libcamera-devel", "v2" ] }