{"id":22399,"url":"https://patchwork.libcamera.org/api/1.1/patches/22399/?format=json","web_url":"https://patchwork.libcamera.org/patch/22399/","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":"<20241218180310.7824-2-david.plowman@raspberrypi.com>","date":"2024-12-18T18:03:08","name":"[v2,1/3] controls: Add FrameWallClock control","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"3d044420d8d4682ce2496852c1be98bf9ff71a0a","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/22399/mbox/","series":[{"id":4913,"url":"https://patchwork.libcamera.org/api/1.1/series/4913/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=4913","date":"2024-12-18T18:03:07","name":"Wall clocks and camera sync","version":2,"mbox":"https://patchwork.libcamera.org/series/4913/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/22399/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/22399/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 E8DF5C3301\n\tfor ;\n\tWed, 18 Dec 2024 18:03:20 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 9AFC668457;\n\tWed, 18 Dec 2024 19:03:20 +0100 (CET)","from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com\n\t[IPv6:2a00:1450:4864:20::32f])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 1F7B3680B6\n\tfor ;\n\tWed, 18 Dec 2024 19:03:17 +0100 (CET)","by mail-wm1-x32f.google.com with SMTP id\n\t5b1f17b1804b1-43618283d48so49304825e9.1\n\tfor ;\n\tWed, 18 Dec 2024 10:03:17 -0800 (PST)","from raspberrypi.pitowers.org\n\t([2a00:1098:3142:1f:c68a:6be1:5ba3:eddd])\n\tby smtp.gmail.com with ESMTPSA id\n\t5b1f17b1804b1-43656b01c88sm27927285e9.17.2024.12.18.10.03.14\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tWed, 18 Dec 2024 10:03:14 -0800 (PST)"],"Authentication-Results":"lancelot.ideasonboard.com; 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\n\tWed, 18 Dec 2024 10:03:15 -0800 (PST)","From":"David Plowman ","To":"libcamera-devel@lists.libcamera.org","Cc":"David Plowman ,\n\tKieran Bingham ,\n\tNaushir Patuck ,\n\tLaurent Pinchart ","Subject":"[PATCH v2 1/3] controls: Add FrameWallClock control","Date":"Wed, 18 Dec 2024 18:03:08 +0000","Message-Id":"<20241218180310.7824-2-david.plowman@raspberrypi.com>","X-Mailer":"git-send-email 2.39.5","In-Reply-To":"<20241218180310.7824-1-david.plowman@raspberrypi.com>","References":"<20241218180310.7824-1-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 \nReviewed-by: Kieran Bingham \nReviewed-by: Naushir Patuck \nReviewed-by: Laurent Pinchart \n---\n src/libcamera/control_ids_core.yaml | 18 +++++++++++++++---\n 1 file changed, 15 insertions(+), 3 deletions(-)","diff":"diff --git a/src/libcamera/control_ids_core.yaml b/src/libcamera/control_ids_core.yaml\nindex 073e0611..8485f7e8 100644\n--- a/src/libcamera/control_ids_core.yaml\n+++ b/src/libcamera/control_ids_core.yaml\n@@ -1,6 +1,4 @@\n-# SPDX-License-Identifier: LGPL-2.1-or-later\n-#\n-# Copyright (C) 2019, Google Inc.\n+\n #\n %YAML 1.1\n ---\n@@ -1015,4 +1013,18 @@ 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 CLOCK_REALTIME clock.\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":["v2","1/3"]}