{"id":24023,"url":"https://patchwork.libcamera.org/api/1.1/covers/24023/?format=json","web_url":"https://patchwork.libcamera.org/cover/24023/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20250729153915.159243-1-uajain@igalia.com>","date":"2025-07-29T15:39:12","name":"[v5,0/3] gstreamer: Report camera properties as device properties","submitter":{"id":232,"url":"https://patchwork.libcamera.org/api/1.1/people/232/?format=json","name":"Umang Jain","email":"uajain@igalia.com"},"mbox":"https://patchwork.libcamera.org/cover/24023/mbox/","series":[{"id":5346,"url":"https://patchwork.libcamera.org/api/1.1/series/5346/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5346","date":"2025-07-29T15:39:12","name":"gstreamer: Report camera properties as device properties","version":5,"mbox":"https://patchwork.libcamera.org/series/5346/mbox/"}],"comments":"https://patchwork.libcamera.org/api/covers/24023/comments/","headers":{"Return-Path":"","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 ECDF9BDCC1\n\tfor ;\n\tTue, 29 Jul 2025 15:39:19 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id BDB1B691DF;\n\tTue, 29 Jul 2025 17:39:18 +0200 (CEST)","from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 61C2469052\n\tfor ;\n\tTue, 29 Jul 2025 17:39:13 +0200 (CEST)","from [49.36.71.87] (helo=uajain) by fanzine2.igalia.com with\n\tesmtpsa \n\t(Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256)\n\t(Exim) id 1ugmQ3-005UrS-Uu; Tue, 29 Jul 2025 17:39:12 +0200"],"Authentication-Results":"lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=igalia.com header.i=@igalia.com\n\theader.b=\"QKxzaHox\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com;\n\ts=20170329;\n\th=Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:\n\tCc:To:From:Sender:Reply-To:Content-Type:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tIn-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:\n\tList-Post:List-Owner:List-Archive;\n\tbh=PCeBHY6cZG507QtfshHQdcwD2+i7FL9Hiyfxg899Woc=;\n\tb=QKxzaHoxoVcPukzJAy+P3qy7Kg\n\tZVJymjfHAGwR7YmjZwpmuEWz9fXqRN9BeVLY6New871uBxnYZuFcJEWjF+gP/aO98FuYi9L8Ob5wy\n\tCp40IGpDaUOavZmaSzhSOmrXEAY68KAy2A966Hk83Fp48tdLnoZmQY1Q3xMUez02axtkTj6Uv0saE\n\th7V8ztIXiOGxN1AZysWRqdxAE9U+lzxXUVbWViy+o0ZqKthQXKnE3mfD3XcdPvfDToVA39i1oWD+P\n\tGkUnXqvVTTjo/b+qkxdE5OEK7yJsw+E5+goile2RV5EeRfqMbaa3zZBS8eAS5+LGVBWVR4cl2RLLN\n\tj7u5/rVw==;","From":"Umang Jain ","To":"libcamera-devel@lists.libcamera.org","Cc":"Jaslo Ziska ,\n\tNicolas Dufresne ,\n\tUmang Jain ","Subject":"[PATCH v5 0/3] gstreamer: Report camera properties as device\n\tproperties","Date":"Tue, 29 Jul 2025 21:09:12 +0530","Message-ID":"<20250729153915.159243-1-uajain@igalia.com>","X-Mailer":"git-send-email 2.50.0","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"This series aims to report camera properties from libcamera\nto device properties in gstreamer device provider.\n\nPatch 1/3 splits the Rectangle GValue helper into two:\nPoint and Size.\n\nPatch 2/3 moves all three 3 GValue helpers(Rectangle, Size, Point)\nfrom gstlibcamera-controls.cpp.in to libcamera-utils.cpp. This\nenables code sharing when we report properties which are\nRectangle, Size, Points types.\n\nPatch 3/3 is the integration patch. It maps all ControlType\nfrom libcamera to corresponding GType. If the ControlValue::isArray()\nis true, GST_VALUE_ARRAY is preferred to report all array values,\nwith corresponding type GType.\n\nOutput on RPi3:\n==============\nuajain1@uajain:~$ cam -c1 -p\n...\nProperty: SystemDevices = [ 20749, 20739, 20740, 20741 ]\nProperty: ScalerCropMaximum = (0, 0)/0x0\nProperty: PixelArrayActiveAreas = [ (8, 8)/3280x2464 ]\nProperty: PixelArraySize = 3280x2464\nProperty: Rotation = 180\nProperty: Location = 2 (CameraLocationExternal)\nProperty: ColorFilterArrangement = 0 (RGGB)\nProperty: UnitCellSize = 1120x1120\nProperty: Model = imx219\n\n\nuajain1@uajain:~$ gst-device-monitor-1.0 \n....\n\tproperties:\n\t\tapi.libcamera.SystemDevices = < (gint64)20749, (gint64)20739, (gint64)20740, (gint64)20741 >\n\t\tapi.libcamera.ScalerCropMaximum = < (int)0, (int)0, (int)0, (int)0 >\n\t\tapi.libcamera.PixelArrayActiveAreas = < (int)8, (int)8, (int)3280, (int)2464 >\n\t\tapi.libcamera.PixelArraySize = < (int)3280, (int)2464 >\n\t\tapi.libcamera.Rotation = 180\n\t\tapi.libcamera.Location = CameraLocationExternal\n\t\tapi.libcamera.ColorFilterArrangement = RGGB\n\t\tapi.libcamera.UnitCellSize = < (int)1120, (int)1120 >\n\t\tapi.libcamera.Model = imx219\n\tgst-launch-1.0 libcamerasrc camera-name=\"/base/soc/i2c0mux/i2c\\@1/imx219\\@10\" ! ...\n\nChanges in v5:\n- Use of g_auto() for GValue cleanups\n- Construct property string api.libcamera.xxx in\n gst_libcamera_set_structure_field() directly\n- Unset GValue array before setting string type property\n- Use G_TYPE_INT for 32-bit integers (drop long-type) as per Nicolas'\n comment.\n- few cosmetic changes for better readability\n\nChanges in v4:\n- Extensively reworked to map ControlType<>GType for ControlValues\n\nUmang Jain (3):\n gstreamer: Split value_set_rectangle() GValue helper\n gstreamer: Move existing GValue helpers to gstreamer-utils\n gstreamer: Report camera properties as device properties\n\n src/gstreamer/gstlibcamera-controls.cpp.in | 50 +----\n src/gstreamer/gstlibcamera-utils.cpp | 244 +++++++++++++++++++++\n src/gstreamer/gstlibcamera-utils.h | 7 +\n src/gstreamer/gstlibcameraprovider.cpp | 13 ++\n 4 files changed, 269 insertions(+), 45 deletions(-)"}