{"id":22212,"url":"https://patchwork.libcamera.org/api/1.1/patches/22212/?format=json","web_url":"https://patchwork.libcamera.org/patch/22212/","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":"<20241206142742.7931-2-david.plowman@raspberrypi.com>","date":"2024-12-06T14:27:38","name":"[1/5] controls: Add FrameWallClock control","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"46a5f917b3a2a45f441c3db9b74e3b0f7edcdb96","submitter":{"id":42,"url":"https://patchwork.libcamera.org/api/1.1/people/42/?format=json","name":"David Plowman","email":"david.plowman@raspberrypi.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/22212/mbox/","series":[{"id":4856,"url":"https://patchwork.libcamera.org/api/1.1/series/4856/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=4856","date":"2024-12-06T14:27:37","name":"Implement wallclock timestamps for frames","version":1,"mbox":"https://patchwork.libcamera.org/series/4856/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/22212/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/22212/checks/","tags":{},"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 8D419BE173\n\tfor ;\n\tFri, 6 Dec 2024 14:27:54 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 966B366175;\n\tFri, 6 Dec 2024 15:27:50 +0100 (CET)","from mail-wm1-x329.google.com (mail-wm1-x329.google.com\n\t[IPv6:2a00:1450:4864:20::329])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 95CAA66158\n\tfor ;\n\tFri, 6 Dec 2024 15:27:46 +0100 (CET)","by mail-wm1-x329.google.com with SMTP id\n\t5b1f17b1804b1-434a9f2da82so14413385e9.2\n\tfor ;\n\tFri, 06 Dec 2024 06:27:46 -0800 (PST)","from localhost.localdomain ([88.202.252.90])\n\tby smtp.gmail.com with ESMTPSA id\n\tffacd0b85a97d-386220b071dsm4608219f8f.101.2024.12.06.06.27.45\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tFri, 06 Dec 2024 06:27:45 -0800 (PST)"],"Authentication-Results":"lancelot.ideasonboard.com; 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\n\tFri, 06 Dec 2024 06:27:45 -0800 (PST)","From":"David Plowman ","To":"libcamera-devel@lists.libcamera.org","Cc":"David Plowman ","Subject":"[PATCH 1/5] controls: Add FrameWallClock control","Date":"Fri, 6 Dec 2024 14:27:38 +0000","Message-Id":"<20241206142742.7931-2-david.plowman@raspberrypi.com>","X-Mailer":"git-send-email 2.39.5","In-Reply-To":"<20241206142742.7931-1-david.plowman@raspberrypi.com>","References":"<20241206142742.7931-1-david.plowman@raspberrypi.com>","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":"Add a FrameWallClock control that reports the same moment as the\nframe's SensorTimestamp, but in wallclock units.\n\nSigned-off-by: David Plowman \n---\n src/libcamera/control_ids_core.yaml | 14 ++++++++++++++\n 1 file changed, 14 insertions(+)","diff":"diff --git a/src/libcamera/control_ids_core.yaml b/src/libcamera/control_ids_core.yaml\nindex d45cf8e5..d951b2a3 100644\n--- a/src/libcamera/control_ids_core.yaml\n+++ b/src/libcamera/control_ids_core.yaml\n@@ -971,4 +971,18 @@ controls:\n description: |\n Enable or disable the debug metadata.\n \n+ - FrameWallClock:\n+ type: int64_t\n+ description: |\n+ This timestamp corresponds to the same moment in time as the\n+ SensorTimestamp, but is represented as a wall clock time as measured by\n+ the Linux-specific CLOCK_REALTIME clock id.\n+\n+ Being a wall clock measurement, it can be used to synchronise timing\n+ across different devices.\n+\n+ \\sa SensorTimestamp\n+\n+ The FrameWallClock control can only be returned in metadata.\n+\n ...\n","prefixes":["1/5"]}