[{"id":32588,"web_url":"https://patchwork.libcamera.org/comment/32588/","msgid":"<173349651299.3135963.16560782701549850277@ping.linuxembedded.co.uk>","date":"2024-12-06T14:48:32","subject":"Re: [PATCH 1/5] controls: Add FrameWallClock control","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/people/4/","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"content":"Quoting David Plowman (2024-12-06 14:27:38)\n> Add a FrameWallClock control that reports the same moment as the\n> frame's SensorTimestamp, but in wallclock units.\n> \n> Signed-off-by: David Plowman \n> ---\n> src/libcamera/control_ids_core.yaml | 14 ++++++++++++++\n> 1 file changed, 14 insertions(+)\n> \n> diff --git a/src/libcamera/control_ids_core.yaml b/src/libcamera/control_ids_core.yaml\n> index 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\nReviewed-by: Kieran Bingham \n\n> +\n> ...\n> -- \n> 2.39.5\n>","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 6DC33BF415\n\tfor ;\n\tFri, 6 Dec 2024 14:48:38 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 7F9E96615F;\n\tFri, 6 Dec 2024 15:48:37 +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 8C4B4618B3\n\tfor ;\n\tFri, 6 Dec 2024 15:48:36 +0100 (CET)","from pendragon.ideasonboard.com\n\t(cpc89244-aztw30-2-0-cust6594.18-1.cable.virginm.net [86.31.185.195])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 011A4641;\n\tFri, 6 Dec 2024 15:48:06 +0100 (CET)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"CQUS5b+I\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1733496487;\n\tbh=CIbd1v8/CQNgVufs40zC418k1jGkhlo3keLTfb4g+PM=;\n\th=In-Reply-To:References:Subject:From:Cc:To:Date:From;\n\tb=CQUS5b+Iwksew+azwanmvsKuuWZ/3JJ5eiBE6FJUzT6MBYnFBgcTca5AtY51uM3Xl\n\tzec0CCr/iHUVR89SoSBaac8+CxXUAck/sx/5mZSw3Iyy0fqkBIk2b2pLLk9Z4s9vm7\n\tUUEqCd1xpriwKkGTyeSe1HhqNqe7qLoMnYlumj40=","Content-Type":"text/plain; charset=\"utf-8\"","MIME-Version":"1.0","Content-Transfer-Encoding":"quoted-printable","In-Reply-To":"<20241206142742.7931-2-david.plowman@raspberrypi.com>","References":"<20241206142742.7931-1-david.plowman@raspberrypi.com>\n\t<20241206142742.7931-2-david.plowman@raspberrypi.com>","Subject":"Re: [PATCH 1/5] controls: Add FrameWallClock control","From":"Kieran Bingham ","Cc":"David Plowman ","To":"David Plowman ,\n\tlibcamera-devel@lists.libcamera.org","Date":"Fri, 06 Dec 2024 14:48:32 +0000","Message-ID":"<173349651299.3135963.16560782701549850277@ping.linuxembedded.co.uk>","User-Agent":"alot/0.10","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\" "}},{"id":32705,"web_url":"https://patchwork.libcamera.org/comment/32705/","msgid":"","date":"2024-12-12T12:37:03","subject":"Re: [PATCH 1/5] controls: Add FrameWallClock control","submitter":{"id":34,"url":"https://patchwork.libcamera.org/api/people/34/","name":"Naushir Patuck","email":"naush@raspberrypi.com"},"content":"Hi David,\n\nOn Fri, 6 Dec 2024 at 14:27, David Plowman\n wrote:\n>\n> Add a FrameWallClock control that reports the same moment as the\n> frame's SensorTimestamp, but in wallclock units.\n>\n> Signed-off-by: David Plowman \n\nReviewed-by: Naushir Patuck \n\n> ---\n> src/libcamera/control_ids_core.yaml | 14 ++++++++++++++\n> 1 file changed, 14 insertions(+)\n>\n> diff --git a/src/libcamera/control_ids_core.yaml b/src/libcamera/control_ids_core.yaml\n> index 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> --\n> 2.39.5\n>","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 B06C9BD80A\n\tfor ;\n\tThu, 12 Dec 2024 12:37:43 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 9B1C667ED5;\n\tThu, 12 Dec 2024 13:37:42 +0100 (CET)","from mail-yb1-xb32.google.com (mail-yb1-xb32.google.com\n\t[IPv6:2607:f8b0:4864:20::b32])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id AE1B2608B6\n\tfor ;\n\tThu, 12 Dec 2024 13:37:40 +0100 (CET)","by mail-yb1-xb32.google.com with SMTP id\n\t3f1490d57ef6-e30cf3ef571so64482276.3\n\tfor ;\n\tThu, 12 Dec 2024 04:37:40 -0800 (PST)"],"Authentication-Results":"lancelot.ideasonboard.com; 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Thu, 12 Dec 2024\n\t04:37:39 -0800 (PST)","MIME-Version":"1.0","References":"<20241206142742.7931-1-david.plowman@raspberrypi.com>\n\t<20241206142742.7931-2-david.plowman@raspberrypi.com>","In-Reply-To":"<20241206142742.7931-2-david.plowman@raspberrypi.com>","From":"Naushir Patuck ","Date":"Thu, 12 Dec 2024 12:37:03 +0000","Message-ID":"","Subject":"Re: [PATCH 1/5] controls: Add FrameWallClock control","To":"David Plowman ","Cc":"libcamera-devel@lists.libcamera.org","Content-Type":"text/plain; charset=\"UTF-8\"","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\" "}},{"id":32859,"web_url":"https://patchwork.libcamera.org/comment/32859/","msgid":"<20241218012331.GX23470@pendragon.ideasonboard.com>","date":"2024-12-18T01:23:31","subject":"Re: [PATCH 1/5] controls: Add FrameWallClock control","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"content":"Hi David,\n\nThank you for the patch.\n\nOn Fri, Dec 06, 2024 at 02:27:38PM +0000, David Plowman wrote:\n> Add a FrameWallClock control that reports the same moment as the\n> frame's SensorTimestamp, but in wallclock units.\n> \n> Signed-off-by: David Plowman \n> ---\n> src/libcamera/control_ids_core.yaml | 14 ++++++++++++++\n> 1 file changed, 14 insertions(+)\n> \n> diff --git a/src/libcamera/control_ids_core.yaml b/src/libcamera/control_ids_core.yaml\n> index 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\ns/ id//\n\nCLOCK_REALTIME is not Linux-specific, it's a POSIX clock, so you can\nwrite \"by the CLOCK_REALTIME clock\".\n\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\nOnce Paul's ControlId series lands, this sentence should be replaced\nwith\n\n direction: out\n\nReviewed-by: Laurent Pinchart \n\n> +\n> ...","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 10731C3301\n\tfor ;\n\tWed, 18 Dec 2024 01:23:36 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 477DA6805E;\n\tWed, 18 Dec 2024 02:23:35 +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 F0DAD61898\n\tfor ;\n\tWed, 18 Dec 2024 02:23:33 +0100 (CET)","from pendragon.ideasonboard.com (81-175-209-231.bb.dnainternet.fi\n\t[81.175.209.231])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 374F3514;\n\tWed, 18 Dec 2024 02:22:56 +0100 (CET)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"pQcbupga\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1734484976;\n\tbh=RCP9QUQw3UAka2IGoK0k7/YHkxe2sef86hb/+3kr/SM=;\n\th=Date:From:To:Cc:Subject:References:In-Reply-To:From;\n\tb=pQcbupgaG9O5NnMOPZKTK4enRiUAtIUCCMGzuXkgNEJIqQaGvdeduaL6KSCedbxg0\n\tzKikeT2FKca4TLECmzS6S75yhVnx9qlDM/xNwFtEqNqpyIyGEl3gdfJJFueCWRUJc+\n\tvEr8GoynjIP37MniWrmSRU/8qpYUXDVdMUPOqLx4=","Date":"Wed, 18 Dec 2024 03:23:31 +0200","From":"Laurent Pinchart ","To":"David Plowman ","Cc":"libcamera-devel@lists.libcamera.org","Subject":"Re: [PATCH 1/5] controls: Add FrameWallClock control","Message-ID":"<20241218012331.GX23470@pendragon.ideasonboard.com>","References":"<20241206142742.7931-1-david.plowman@raspberrypi.com>\n\t<20241206142742.7931-2-david.plowman@raspberrypi.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=utf-8","Content-Disposition":"inline","In-Reply-To":"<20241206142742.7931-2-david.plowman@raspberrypi.com>","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\" "}},{"id":32870,"web_url":"https://patchwork.libcamera.org/comment/32870/","msgid":"","date":"2024-12-18T12:07:49","subject":"Re: [PATCH 1/5] controls: Add FrameWallClock control","submitter":{"id":42,"url":"https://patchwork.libcamera.org/api/people/42/","name":"David Plowman","email":"david.plowman@raspberrypi.com"},"content":"Hi Laurent\n\nThanks for the review.\n\nOn Wed, 18 Dec 2024 at 01:23, Laurent Pinchart\n wrote:\n>\n> Hi David,\n>\n> Thank you for the patch.\n>\n> On Fri, Dec 06, 2024 at 02:27:38PM +0000, David Plowman wrote:\n> > Add a FrameWallClock control that reports the same moment as the\n> > frame's SensorTimestamp, but in wallclock units.\n> >\n> > Signed-off-by: David Plowman \n> > ---\n> > src/libcamera/control_ids_core.yaml | 14 ++++++++++++++\n> > 1 file changed, 14 insertions(+)\n> >\n> > diff --git a/src/libcamera/control_ids_core.yaml b/src/libcamera/control_ids_core.yaml\n> > index 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> s/ id//\n>\n> CLOCK_REALTIME is not Linux-specific, it's a POSIX clock, so you can\n> write \"by the CLOCK_REALTIME clock\".\n\nWill do!\n\n>\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> Once Paul's ControlId series lands, this sentence should be replaced\n> with\n>\n> direction: out\n\nYep, let's see which patch gets there first!!\n\nThanks\nDavid\n\n>\n> Reviewed-by: Laurent Pinchart \n>\n> > +\n> > ...\n>\n> --\n> Regards,\n>\n> Laurent Pinchart","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 871AAC32FE\n\tfor ;\n\tWed, 18 Dec 2024 12:08:04 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 6011C68094;\n\tWed, 18 Dec 2024 13:08:03 +0100 (CET)","from mail-qt1-x82f.google.com (mail-qt1-x82f.google.com\n\t[IPv6:2607:f8b0:4864:20::82f])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 8BC2867F59\n\tfor ;\n\tWed, 18 Dec 2024 13:08:01 +0100 (CET)","by mail-qt1-x82f.google.com with SMTP id\n\td75a77b69052e-4678cd314b6so62875631cf.3\n\tfor ;\n\tWed, 18 Dec 2024 04:08:01 -0800 (PST)"],"Authentication-Results":"lancelot.ideasonboard.com; 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