[{"id":38416,"web_url":"https://patchwork.libcamera.org/comment/38416/","msgid":"","date":"2026-03-26T09:16:42","subject":"Re: [PATCH v1 2/3] controls: rpi: Add ControlId control","submitter":{"id":34,"url":"https://patchwork.libcamera.org/api/people/34/","name":"Naushir Patuck","email":"naush@raspberrypi.com"},"content":"Hi David,\n\nThank you for the patch.\n\nOn Tue, 24 Mar 2026 at 15:17, David Plowman\n wrote:\n>\n> The ControlId identifies the sequence number of the request whose\n> controls have been applied to the images in this request for the first\n> time.\n>\n> Signed-off-by: David Plowman \n> ---\n> src/libcamera/control_ids_rpi.yaml | 10 ++++++++++\n> 1 file changed, 10 insertions(+)\n>\n> diff --git a/src/libcamera/control_ids_rpi.yaml b/src/libcamera/control_ids_rpi.yaml\n> index a8615112..aca023d7 100644\n> --- a/src/libcamera/control_ids_rpi.yaml\n> +++ b/src/libcamera/control_ids_rpi.yaml\n> @@ -183,4 +183,14 @@ controls:\n> \\sa SyncMode\n> \\sa SyncReady\n> \\sa SyncTimer\n> +\n> + - ControlId:\n> + type: int64_t\n> + direction: out\n> + description: |\n> + This is the sequence number of the request whose control list has\n> + just been applied. Controls normally take several frames to apply,\n> + so the number here will refer to a request submitted a number of\n> + frames earlier.\n\nThis name, while it makes sense, is a bit unfortunate as we have class\nControlId in the public libcamera API. Maybe a bit confusing for\nusers? Maybe ControlReference or ControlRef?\n\nRegards,\nNaush\n\n> +\n> ...\n> --\n> 2.47.3\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 60EF6BDCBD\n\tfor ;\n\tThu, 26 Mar 2026 09:17:23 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 95C496284A;\n\tThu, 26 Mar 2026 10:17:22 +0100 (CET)","from mail-vk1-xa2a.google.com (mail-vk1-xa2a.google.com\n\t[IPv6:2607:f8b0:4864:20::a2a])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 7B95F62655\n\tfor ;\n\tThu, 26 Mar 2026 10:17:21 +0100 (CET)","by mail-vk1-xa2a.google.com with SMTP id\n\t71dfb90a1353d-56ba601577aso49790e0c.1\n\tfor ;\n\tThu, 26 Mar 2026 02:17:21 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (2048-bit key;\n\tunprotected) header.d=raspberrypi.com header.i=@raspberrypi.com\n\theader.b=\"qC8G9gT1\"; 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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":38439,"web_url":"https://patchwork.libcamera.org/comment/38439/","msgid":"","date":"2026-03-27T11:43:23","subject":"Re: [PATCH v1 2/3] controls: rpi: Add ControlId control","submitter":{"id":42,"url":"https://patchwork.libcamera.org/api/people/42/","name":"David Plowman","email":"david.plowman@raspberrypi.com"},"content":"Hi Naush\n\nThanks for the review.\n\nOn Thu, 26 Mar 2026 at 09:17, Naushir Patuck wrote:\n>\n> Hi David,\n>\n> Thank you for the patch.\n>\n> On Tue, 24 Mar 2026 at 15:17, David Plowman\n> wrote:\n> >\n> > The ControlId identifies the sequence number of the request whose\n> > controls have been applied to the images in this request for the first\n> > time.\n> >\n> > Signed-off-by: David Plowman \n> > ---\n> > src/libcamera/control_ids_rpi.yaml | 10 ++++++++++\n> > 1 file changed, 10 insertions(+)\n> >\n> > diff --git a/src/libcamera/control_ids_rpi.yaml b/src/libcamera/control_ids_rpi.yaml\n> > index a8615112..aca023d7 100644\n> > --- a/src/libcamera/control_ids_rpi.yaml\n> > +++ b/src/libcamera/control_ids_rpi.yaml\n> > @@ -183,4 +183,14 @@ controls:\n> > \\sa SyncMode\n> > \\sa SyncReady\n> > \\sa SyncTimer\n> > +\n> > + - ControlId:\n> > + type: int64_t\n> > + direction: out\n> > + description: |\n> > + This is the sequence number of the request whose control list has\n> > + just been applied. Controls normally take several frames to apply,\n> > + so the number here will refer to a request submitted a number of\n> > + frames earlier.\n>\n> This name, while it makes sense, is a bit unfortunate as we have class\n> ControlId in the public libcamera API. Maybe a bit confusing for\n> users? Maybe ControlReference or ControlRef?\n>\n> Regards,\n> Naush\n\nHappy to rename, of course the billion dollar question is... to what?\nSome more ideas:\n\nControlListRef\nControlListId\nControlListSequence\n\nIn the absence of strong screams to the contrary, I shall make a\npseudo-random choice...\n\nActually, I think I like ControlListSequence best? It is, after all,\nthe sequence number (of the request) where the control list came\nfrom...\n\nThanks\nDavid\n\n>\n> > +\n> > ...\n> > --\n> > 2.47.3\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 DA78BBE086\n\tfor ;\n\tFri, 27 Mar 2026 11:43:37 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 3BE7D62CC9;\n\tFri, 27 Mar 2026 12:43:37 +0100 (CET)","from mail-ed1-x530.google.com (mail-ed1-x530.google.com\n\t[IPv6:2a00:1450:4864:20::530])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id D28BF62CB8\n\tfor ;\n\tFri, 27 Mar 2026 12:43:35 +0100 (CET)","by mail-ed1-x530.google.com with SMTP id\n\t4fb4d7f45d1cf-666f646f5cfso4612247a12.1\n\tfor ;\n\tFri, 27 Mar 2026 04:43:35 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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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":38440,"web_url":"https://patchwork.libcamera.org/comment/38440/","msgid":"","date":"2026-03-27T11:45:34","subject":"Re: [PATCH v1 2/3] controls: rpi: Add ControlId control","submitter":{"id":34,"url":"https://patchwork.libcamera.org/api/people/34/","name":"Naushir Patuck","email":"naush@raspberrypi.com"},"content":"On Fri, 27 Mar 2026 at 11:43, David Plowman\n wrote:\n>\n> Hi Naush\n>\n> Thanks for the review.\n>\n> On Thu, 26 Mar 2026 at 09:17, Naushir Patuck wrote:\n> >\n> > Hi David,\n> >\n> > Thank you for the patch.\n> >\n> > On Tue, 24 Mar 2026 at 15:17, David Plowman\n> > wrote:\n> > >\n> > > The ControlId identifies the sequence number of the request whose\n> > > controls have been applied to the images in this request for the first\n> > > time.\n> > >\n> > > Signed-off-by: David Plowman \n> > > ---\n> > > src/libcamera/control_ids_rpi.yaml | 10 ++++++++++\n> > > 1 file changed, 10 insertions(+)\n> > >\n> > > diff --git a/src/libcamera/control_ids_rpi.yaml b/src/libcamera/control_ids_rpi.yaml\n> > > index a8615112..aca023d7 100644\n> > > --- a/src/libcamera/control_ids_rpi.yaml\n> > > +++ b/src/libcamera/control_ids_rpi.yaml\n> > > @@ -183,4 +183,14 @@ controls:\n> > > \\sa SyncMode\n> > > \\sa SyncReady\n> > > \\sa SyncTimer\n> > > +\n> > > + - ControlId:\n> > > + type: int64_t\n> > > + direction: out\n> > > + description: |\n> > > + This is the sequence number of the request whose control list has\n> > > + just been applied. Controls normally take several frames to apply,\n> > > + so the number here will refer to a request submitted a number of\n> > > + frames earlier.\n> >\n> > This name, while it makes sense, is a bit unfortunate as we have class\n> > ControlId in the public libcamera API. Maybe a bit confusing for\n> > users? Maybe ControlReference or ControlRef?\n> >\n> > Regards,\n> > Naush\n>\n> Happy to rename, of course the billion dollar question is... to what?\n> Some more ideas:\n>\n> ControlListRef\n> ControlListId\n> ControlListSequence\n>\n> In the absence of strong screams to the contrary, I shall make a\n> pseudo-random choice...\n>\n> Actually, I think I like ControlListSequence best? It is, after all,\n> the sequence number (of the request) where the control list came\n> from...\n\nThat works for me!\n\nNaush\n\n>\n> Thanks\n> David\n>\n> >\n> > > +\n> > > ...\n> > > --\n> > > 2.47.3\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 B912ABE086\n\tfor ;\n\tFri, 27 Mar 2026 11:46:14 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id ECBA862CCC;\n\tFri, 27 Mar 2026 12:46:13 +0100 (CET)","from mail-vk1-xa30.google.com (mail-vk1-xa30.google.com\n\t[IPv6:2607:f8b0:4864:20::a30])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 75D2462CB8\n\tfor ;\n\tFri, 27 Mar 2026 12:46:11 +0100 (CET)","by mail-vk1-xa30.google.com with SMTP id\n\t71dfb90a1353d-56ba601577aso125737e0c.1\n\tfor ;\n\tFri, 27 Mar 2026 04:46:11 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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Fri, 27 Mar 2026\n\t04:46:10 -0700 (PDT)","MIME-Version":"1.0","References":"<20260324151714.3345-1-david.plowman@raspberrypi.com>\n\t<20260324151714.3345-3-david.plowman@raspberrypi.com>\n\t\n\t","In-Reply-To":"","From":"Naushir Patuck ","Date":"Fri, 27 Mar 2026 11:45:34 +0000","X-Gm-Features":"AQROBzBgKE4R65AQLHNBM4IZNuFM5z0ZPUjYYQbXXFmtmECMrxe2bty21BpjxNU","Message-ID":"","Subject":"Re: [PATCH v1 2/3] controls: rpi: Add ControlId 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\" "}}]