[{"id":37820,"web_url":"https://patchwork.libcamera.org/comment/37820/","msgid":"<176901610369.1693075.6112939431802067334@ping.linuxembedded.co.uk>","date":"2026-01-21T17:21:43","subject":"Re: [PATCH v1 2/3] ipa: rpi: Fix printing of `utils::Duration`","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/people/4/","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"content":"Quoting Barnabás Pőcze (2026-01-15 11:16:29)\n> `utils::Duration` derives from `std::chrono::duration<...>`, but multiplying\n> it yields an `std::chrono::duration<...>`, not `Duration`. chrono duration\n> types only have `operator<<` in C++20 or later, so this usage should not\n> compile. It only did so because the `operator<<` for `Duration` was in\n> the `libcamera` namespace and `Duration` has an implicit constructor from\n> any chrono duration type.\n> \n> This will cease to work when that operator is moved into the `utils` namespace\n> for ADL purposes. So fix it by making the cast to `Duration` explicit.\n> \n> Signed-off-by: Barnabás Pőcze \n\nThis looks reasonable to me - but it's in ipa/rpi so it needs an ack\nfrom RPi.\n\nBut from me:\n\nReviewed-by: Kieran Bingham \n\n\n> ---\n> src/ipa/rpi/common/ipa_base.cpp | 2 +-\n> 1 file changed, 1 insertion(+), 1 deletion(-)\n> \n> diff --git a/src/ipa/rpi/common/ipa_base.cpp b/src/ipa/rpi/common/ipa_base.cpp\n> index 14aba4500..f95a0f838 100644\n> --- a/src/ipa/rpi/common/ipa_base.cpp\n> +++ b/src/ipa/rpi/common/ipa_base.cpp\n> @@ -602,7 +602,7 @@ void IpaBase::setMode(const IPACameraSensorInfo &sensorInfo)\n> mode_.minLineLength = adjustedLineLength;\n> } else {\n> LOG(IPARPI, Error)\n> - << \"Sensor minimum line length of \" << pixelTime * mode_.width\n> + << \"Sensor minimum line length of \" << Duration(pixelTime * mode_.width)\n> << \" (\" << 1us / pixelTime << \" MPix/s)\"\n> << \" is below the minimum allowable ISP limit of \"\n> << adjustedLineLength\n> -- \n> 2.52.0\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 A7C04C3220\n\tfor ;\n\tWed, 21 Jan 2026 17:21:48 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id E3FC561FC9;\n\tWed, 21 Jan 2026 18:21:47 +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 6DD4961F9F\n\tfor ;\n\tWed, 21 Jan 2026 18:21:46 +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 49BAC741;\n\tWed, 21 Jan 2026 18:21:14 +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=\"KmW51xey\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1769016074;\n\tbh=HoChH/igstQdi13ZD8yNNuBxwhM+JRsQA+BsnIaR2V0=;\n\th=In-Reply-To:References:Subject:From:To:Date:From;\n\tb=KmW51xeyNjaV2E3pR0LbtOZfeutTlfwTK+JL2o0GcjQJuzRPr7rUa3+0iJ9uubFE7\n\tueCMJI1Rr2CNUbKseOjMDPi/WWavuks+ShRe92URBKDjFwO7Y7N3rr+RJLKsGqRu1F\n\tg96i1Nh2+w1MVX+UG2xBPVKWc992FBM4rcqEEkN8=","Content-Type":"text/plain; charset=\"utf-8\"","MIME-Version":"1.0","Content-Transfer-Encoding":"quoted-printable","In-Reply-To":"<20260115111630.1892890-2-barnabas.pocze@ideasonboard.com>","References":"<20260115111630.1892890-1-barnabas.pocze@ideasonboard.com>\n\t<20260115111630.1892890-2-barnabas.pocze@ideasonboard.com>","Subject":"Re: [PATCH v1 2/3] ipa: rpi: Fix printing of `utils::Duration`","From":"Kieran Bingham ","To":"=?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= ,\n\tlibcamera-devel@lists.libcamera.org","Date":"Wed, 21 Jan 2026 17:21:43 +0000","Message-ID":"<176901610369.1693075.6112939431802067334@ping.linuxembedded.co.uk>","User-Agent":"alot/0.9.1","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":37831,"web_url":"https://patchwork.libcamera.org/comment/37831/","msgid":"<20260122003642.GJ21091@killaraus>","date":"2026-01-22T00:36:42","subject":"Re: [PATCH v1 2/3] ipa: rpi: Fix printing of `utils::Duration`","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"content":"Hi Barnabás,\n\nThank you for the patch.\n\nOn Thu, Jan 15, 2026 at 12:16:29PM +0100, Barnabás Pőcze wrote:\n> `utils::Duration` derives from `std::chrono::duration<...>`, but multiplying\n> it yields an `std::chrono::duration<...>`, not `Duration`. chrono duration\n> types only have `operator<<` in C++20 or later, so this usage should not\n> compile. It only did so because the `operator<<` for `Duration` was in\n> the `libcamera` namespace and `Duration` has an implicit constructor from\n> any chrono duration type.\n> \n> This will cease to work when that operator is moved into the `utils` namespace\n> for ADL purposes. So fix it by making the cast to `Duration` explicit.\n> \n> Signed-off-by: Barnabás Pőcze \n> ---\n> src/ipa/rpi/common/ipa_base.cpp | 2 +-\n> 1 file changed, 1 insertion(+), 1 deletion(-)\n> \n> diff --git a/src/ipa/rpi/common/ipa_base.cpp b/src/ipa/rpi/common/ipa_base.cpp\n> index 14aba4500..f95a0f838 100644\n> --- a/src/ipa/rpi/common/ipa_base.cpp\n> +++ b/src/ipa/rpi/common/ipa_base.cpp\n> @@ -602,7 +602,7 @@ void IpaBase::setMode(const IPACameraSensorInfo &sensorInfo)\n> \t\t\tmode_.minLineLength = adjustedLineLength;\n> \t\t} else {\n> \t\t\tLOG(IPARPI, Error)\n> -\t\t\t\t<< \"Sensor minimum line length of \" << pixelTime * mode_.width\n> +\t\t\t\t<< \"Sensor minimum line length of \" << Duration(pixelTime * mode_.width)\n\n\t\t\t\t<< \"Sensor minimum line length of \"\n\t\t\t\t<< Duration(pixelTime * mode_.width)\n\nReviewed-by: Laurent Pinchart \n\n> \t\t\t\t<< \" (\" << 1us / pixelTime << \" MPix/s)\"\n> \t\t\t\t<< \" is below the minimum allowable ISP limit of \"\n> \t\t\t\t<< adjustedLineLength","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 A81D3C3220\n\tfor ;\n\tThu, 22 Jan 2026 00:36:46 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 6183561FBB;\n\tThu, 22 Jan 2026 01:36:46 +0100 (CET)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 3DBDD61A35\n\tfor ;\n\tThu, 22 Jan 2026 01:36:44 +0100 (CET)","from pendragon.ideasonboard.com\n\t(2001-14ba-703d-e500--ff4.rev.dnainternet.fi\n\t[IPv6:2001:14ba:703d:e500::ff4])\n\tby perceval.ideasonboard.com (Postfix) with UTF8SMTPSA id C9892324;\n\tThu, 22 Jan 2026 01:36:11 +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=\"Gx0VPrRw\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1769042172;\n\tbh=t3zizzSDK/b8tHDqNG1DIs++S7M97VAKYViPZoJ2+B0=;\n\th=Date:From:To:Cc:Subject:References:In-Reply-To:From;\n\tb=Gx0VPrRwMnG9gPBz7uBLCoCUM6/AzZFRK/MZrgBqer7w9ViLRAnvRUdtSAeRJv2U0\n\tPrxMPmZIK+tgDrDYUy3FLXAY0EVwobq6qndP2viAeC+5tI4VMJQYWgR0NF6IscwW+Y\n\tFxYd78v4iU7n2rOjvbTjWUtf5xDf7C+FnMQ1q1/Y=","Date":"Thu, 22 Jan 2026 02:36:42 +0200","From":"Laurent Pinchart ","To":"=?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= ","Cc":"libcamera-devel@lists.libcamera.org","Subject":"Re: [PATCH v1 2/3] ipa: rpi: Fix printing of `utils::Duration`","Message-ID":"<20260122003642.GJ21091@killaraus>","References":"<20260115111630.1892890-1-barnabas.pocze@ideasonboard.com>\n\t<20260115111630.1892890-2-barnabas.pocze@ideasonboard.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=utf-8","Content-Disposition":"inline","Content-Transfer-Encoding":"8bit","In-Reply-To":"<20260115111630.1892890-2-barnabas.pocze@ideasonboard.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":38004,"web_url":"https://patchwork.libcamera.org/comment/38004/","msgid":"<176961670651.3376561.12936505034155068006@ping.linuxembedded.co.uk>","date":"2026-01-28T16:11:46","subject":"Re: [PATCH v1 2/3] ipa: rpi: Fix printing of `utils::Duration`","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/people/4/","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"content":"Naush, David,\n\nAny objections here - I'd like to get these ones merged as this series\nfixes ADL/log string handling.\n\n--\nKieran\n\n\nQuoting Barnabás Pőcze (2026-01-15 11:16:29)\n> `utils::Duration` derives from `std::chrono::duration<...>`, but multiplying\n> it yields an `std::chrono::duration<...>`, not `Duration`. chrono duration\n> types only have `operator<<` in C++20 or later, so this usage should not\n> compile. It only did so because the `operator<<` for `Duration` was in\n> the `libcamera` namespace and `Duration` has an implicit constructor from\n> any chrono duration type.\n> \n> This will cease to work when that operator is moved into the `utils` namespace\n> for ADL purposes. So fix it by making the cast to `Duration` explicit.\n> \n> Signed-off-by: Barnabás Pőcze \n> ---\n> src/ipa/rpi/common/ipa_base.cpp | 2 +-\n> 1 file changed, 1 insertion(+), 1 deletion(-)\n> \n> diff --git a/src/ipa/rpi/common/ipa_base.cpp b/src/ipa/rpi/common/ipa_base.cpp\n> index 14aba4500..f95a0f838 100644\n> --- a/src/ipa/rpi/common/ipa_base.cpp\n> +++ b/src/ipa/rpi/common/ipa_base.cpp\n> @@ -602,7 +602,7 @@ void IpaBase::setMode(const IPACameraSensorInfo &sensorInfo)\n> mode_.minLineLength = adjustedLineLength;\n> } else {\n> LOG(IPARPI, Error)\n> - << \"Sensor minimum line length of \" << pixelTime * mode_.width\n> + << \"Sensor minimum line length of \" << Duration(pixelTime * mode_.width)\n> << \" (\" << 1us / pixelTime << \" MPix/s)\"\n> << \" is below the minimum allowable ISP limit of \"\n> << adjustedLineLength\n> -- \n> 2.52.0\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 C8D74C3226\n\tfor ;\n\tWed, 28 Jan 2026 16:11:51 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id F07DA61FD8;\n\tWed, 28 Jan 2026 17:11:50 +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 C6D0A61FC9\n\tfor ;\n\tWed, 28 Jan 2026 17:11:49 +0100 (CET)","from monstersaurus.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 68B7DE70;\n\tWed, 28 Jan 2026 17:11:12 +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=\"pSHFoNDl\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1769616672;\n\tbh=XZRwKcxmGXbX03RCUYy4L9/yAg6iaAKF3eAzJaT6ceo=;\n\th=In-Reply-To:References:Subject:From:To:Date:From;\n\tb=pSHFoNDlRobm0/mDX9ulycFq+hbj8+RTVbZfmzTvTHFalmjGtQHK6+PqMl7y4dSMA\n\tEsNaQ/MGvT1Q3n+4rxFjtC2wZB8QTY072/vM6XKojuAny7FaRFCF08GJSjeGQwW8ne\n\tKOqSgFnl3ad5gk01oo0seya3u7XV3UtJBh6oe1As=","Content-Type":"text/plain; charset=\"utf-8\"","MIME-Version":"1.0","Content-Transfer-Encoding":"quoted-printable","In-Reply-To":"<20260115111630.1892890-2-barnabas.pocze@ideasonboard.com>","References":"<20260115111630.1892890-1-barnabas.pocze@ideasonboard.com>\n\t<20260115111630.1892890-2-barnabas.pocze@ideasonboard.com>","Subject":"Re: [PATCH v1 2/3] ipa: rpi: Fix printing of `utils::Duration`","From":"Kieran Bingham ","To":"=?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= ,\n\tlibcamera-devel@lists.libcamera.org,\n\tNaushir Patuck , David Plowman\n\t, ","Date":"Wed, 28 Jan 2026 16:11:46 +0000","Message-ID":"<176961670651.3376561.12936505034155068006@ping.linuxembedded.co.uk>","User-Agent":"alot/0.9.1","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":38006,"web_url":"https://patchwork.libcamera.org/comment/38006/","msgid":"","date":"2026-01-28T16:30:42","subject":"Re: [PATCH v1 2/3] ipa: rpi: Fix printing of `utils::Duration`","submitter":{"id":34,"url":"https://patchwork.libcamera.org/api/people/34/","name":"Naushir Patuck","email":"naush@raspberrypi.com"},"content":"No objections from me\n\nReviewed-by: Naushir Patuck \n\n\nOn Wed, 28 Jan 2026, 4:11 pm Kieran Bingham, <\nkieran.bingham@ideasonboard.com> wrote:\n\n> Naush, David,\n>\n> Any objections here - I'd like to get these ones merged as this series\n> fixes ADL/log string handling.\n>\n> --\n> Kieran\n>\n>\n> Quoting Barnabás Pőcze (2026-01-15 11:16:29)\n> > `utils::Duration` derives from `std::chrono::duration<...>`, but\n> multiplying\n> > it yields an `std::chrono::duration<...>`, not `Duration`. chrono\n> duration\n> > types only have `operator<<` in C++20 or later, so this usage should not\n> > compile. It only did so because the `operator<<` for `Duration` was in\n> > the `libcamera` namespace and `Duration` has an implicit constructor from\n> > any chrono duration type.\n> >\n> > This will cease to work when that operator is moved into the `utils`\n> namespace\n> > for ADL purposes. So fix it by making the cast to `Duration` explicit.\n> >\n> > Signed-off-by: Barnabás Pőcze \n> > ---\n> > src/ipa/rpi/common/ipa_base.cpp | 2 +-\n> > 1 file changed, 1 insertion(+), 1 deletion(-)\n> >\n> > diff --git a/src/ipa/rpi/common/ipa_base.cpp\n> b/src/ipa/rpi/common/ipa_base.cpp\n> > index 14aba4500..f95a0f838 100644\n> > --- a/src/ipa/rpi/common/ipa_base.cpp\n> > +++ b/src/ipa/rpi/common/ipa_base.cpp\n> > @@ -602,7 +602,7 @@ void IpaBase::setMode(const IPACameraSensorInfo\n> &sensorInfo)\n> > mode_.minLineLength = adjustedLineLength;\n> > } else {\n> > LOG(IPARPI, Error)\n> > - << \"Sensor minimum line length of \" <<\n> pixelTime * mode_.width\n> > + << \"Sensor minimum line length of \" <<\n> Duration(pixelTime * mode_.width)\n> > << \" (\" << 1us / pixelTime << \" MPix/s)\"\n> > << \" is below the minimum allowable ISP\n> limit of \"\n> > << adjustedLineLength\n> > --\n> > 2.52.0\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 46DA3C3226\n\tfor ;\n\tWed, 28 Jan 2026 16:30:56 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 045FB61FD5;\n\tWed, 28 Jan 2026 17:30:56 +0100 (CET)","from mail-vk1-xa32.google.com (mail-vk1-xa32.google.com\n\t[IPv6:2607:f8b0:4864:20::a32])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 8793061FC4\n\tfor ;\n\tWed, 28 Jan 2026 17:30:54 +0100 (CET)","by mail-vk1-xa32.google.com with SMTP id\n\t71dfb90a1353d-563646b5243so929e0c.0\n\tfor ;\n\tWed, 28 Jan 2026 08:30:54 -0800 (PST)"],"Authentication-Results":"lancelot.ideasonboard.com; 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