[{"id":23819,"web_url":"https://patchwork.libcamera.org/comment/23819/","msgid":"","date":"2022-07-11T20:18:12","subject":"Re: [libcamera-devel] [RFC PATCH v3 0/4] Replace boost JSON parser\n\twith libyaml in Raspberry Pi IPA","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"content":"Hi Naush,\n\nWould you be able to review this ? And could I volunteer you to handle\nthe items listed below to make this a non-RFC series ? :-) That would be\n\n- Adding support for a new tuning data format that doesn't rely on YAML\n mapping ordering (it's really just about turning the mapping into a\n list of single-entry mappings, and while at it, adding a top-level\n version number element).\n\n- Update ctt to generate the new format.\n\n- Add a tool (Python seems to be the best option) to convert tuning\n files from the existing format to the new format.\n\nOn Thu, Jun 16, 2022 at 06:05:31PM +0300, Laurent Pinchart via libcamera-devel wrote:\n> Hello,\n> \n> As mentioned in the subject, this patch series replaces the boost JSON\n> parser with the YamlParser implementation based on libyaml for the\n> Raspberry Pi IPA module.\n> \n> Compared to v2, the base work that introduces the iterator API has been\n> sent separately in \"[PATCH 0/7] libcamera: yaml_parser: Add iterator\n> API\". This series then addresses the specific needs of the Raspberry Pi\n> IPA module.\n> \n> The Raspberry Pi IPA tuning data contains a list of algorithms stored in\n> a mapping. Both the JSON and the YAML specifications explicitly state\n> that mappings are not ordered, but the IPA relies on the JSON data order\n> being preserved by the parser. This is an implementation-specific\n> behaviour that happens to be match the boost JSON parser implementation,\n> but not the YamlParser class.\n> \n> While in a perfect world we would update the tuning data format to avoid\n> this problem, we don't want to break every tuning file out there, and\n> thus need to ensure backward compatibility. This is why patches 1/4 and\n> 2/4 update the parser and iterator implementation to preserve the data\n> order, and patches 3/4 and 4/4 then move the Raspberry Pi IPA from boost\n> to YamlParser.\n> \n> If this approach is deemed reasonable, then the next non-RFC version of\n> the series should also include a new format for the Raspberry Pi IPA\n> tuning data that would be compliant with the JSON specification, an\n> update to the camera tuning tool to generate tuning files in that\n> format, and possibly a Python script to convert existing files to the\n> new format.\n> \n> Laurent Pinchart (4):\n> test: yaml-parser: Test dictionary items ordering\n> libcamera: yaml_parser: Preserve order of items in dictionary\n> ipa: raspberrypi: Replace tabs with spaces in tuning data files\n> ipa: raspberrypi: Use YamlParser to replace dependency on boost\n> \n> README.rst | 6 --\n> include/libcamera/internal/yaml_parser.h | 37 +++++---\n> src/ipa/raspberrypi/controller/algorithm.cpp | 2 +-\n> src/ipa/raspberrypi/controller/algorithm.hpp | 6 +-\n> src/ipa/raspberrypi/controller/controller.cpp | 27 ++++--\n> src/ipa/raspberrypi/controller/pwl.cpp | 12 ++-\n> src/ipa/raspberrypi/controller/pwl.hpp | 5 +-\n> src/ipa/raspberrypi/controller/rpi/agc.cpp | 94 +++++++++----------\n> src/ipa/raspberrypi/controller/rpi/agc.hpp | 10 +-\n> src/ipa/raspberrypi/controller/rpi/alsc.cpp | 94 +++++++++----------\n> src/ipa/raspberrypi/controller/rpi/alsc.hpp | 2 +-\n> src/ipa/raspberrypi/controller/rpi/awb.cpp | 89 +++++++++---------\n> src/ipa/raspberrypi/controller/rpi/awb.hpp | 8 +-\n> .../controller/rpi/black_level.cpp | 12 +--\n> .../controller/rpi/black_level.hpp | 2 +-\n> src/ipa/raspberrypi/controller/rpi/ccm.cpp | 28 +++---\n> src/ipa/raspberrypi/controller/rpi/ccm.hpp | 4 +-\n> .../raspberrypi/controller/rpi/contrast.cpp | 18 ++--\n> .../raspberrypi/controller/rpi/contrast.hpp | 2 +-\n> src/ipa/raspberrypi/controller/rpi/dpc.cpp | 4 +-\n> src/ipa/raspberrypi/controller/rpi/dpc.hpp | 2 +-\n> src/ipa/raspberrypi/controller/rpi/geq.cpp | 10 +-\n> src/ipa/raspberrypi/controller/rpi/geq.hpp | 2 +-\n> src/ipa/raspberrypi/controller/rpi/lux.cpp | 12 +--\n> src/ipa/raspberrypi/controller/rpi/lux.hpp | 2 +-\n> src/ipa/raspberrypi/controller/rpi/noise.cpp | 6 +-\n> src/ipa/raspberrypi/controller/rpi/noise.hpp | 2 +-\n> src/ipa/raspberrypi/controller/rpi/sdn.cpp | 6 +-\n> src/ipa/raspberrypi/controller/rpi/sdn.hpp | 2 +-\n> .../raspberrypi/controller/rpi/sharpen.cpp | 8 +-\n> .../raspberrypi/controller/rpi/sharpen.hpp | 2 +-\n> src/ipa/raspberrypi/data/imx219.json | 8 +-\n> src/ipa/raspberrypi/data/imx219_noir.json | 10 +-\n> src/ipa/raspberrypi/data/imx290.json | 18 ++--\n> src/ipa/raspberrypi/data/imx477.json | 8 +-\n> src/ipa/raspberrypi/data/imx477_noir.json | 10 +-\n> src/ipa/raspberrypi/data/ov5647.json | 10 +-\n> src/ipa/raspberrypi/data/ov5647_noir.json | 12 +--\n> src/ipa/raspberrypi/data/se327m12.json | 6 +-\n> src/ipa/raspberrypi/meson.build | 1 -\n> src/ipa/raspberrypi/raspberrypi.cpp | 1 +\n> src/libcamera/yaml_parser.cpp | 35 ++++---\n> test/yaml-parser.cpp | 17 ++--\n> 43 files changed, 334 insertions(+), 318 deletions(-)\n> \n> \n> base-commit: c5ab0f3b64280733a10b2da39e522fe87d0d51f0\n> -- \n> Regards,\n> \n> Laurent Pinchart\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 88361BE173\n\tfor ;\n\tMon, 11 Jul 2022 20:18:43 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id A764263312;\n\tMon, 11 Jul 2022 22:18:42 +0200 (CEST)","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 8D5C060401\n\tfor ;\n\tMon, 11 Jul 2022 22:18:40 +0200 (CEST)","from pendragon.ideasonboard.com (62-78-145-57.bb.dnainternet.fi\n\t[62.78.145.57])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 00262440;\n\tMon, 11 Jul 2022 22:18:39 +0200 (CEST)"],"DKIM-Signature":["v=1; 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dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"NzseX4Oc\"; dkim-atps=neutral","Date":"Mon, 11 Jul 2022 23:18:12 +0300","To":"Naushir Patuck ","Message-ID":"","References":"<20220616150535.21742-1-laurent.pinchart@ideasonboard.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=utf-8","Content-Disposition":"inline","In-Reply-To":"<20220616150535.21742-1-laurent.pinchart@ideasonboard.com>","Subject":"Re: [libcamera-devel] [RFC PATCH v3 0/4] Replace boost JSON parser\n\twith libyaml in Raspberry Pi IPA","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","From":"Laurent Pinchart via libcamera-devel\n\t","Reply-To":"Laurent Pinchart ","Cc":"libcamera-devel@lists.libcamera.org","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}},{"id":23829,"web_url":"https://patchwork.libcamera.org/comment/23829/","msgid":"","date":"2022-07-12T08:16:01","subject":"Re: [libcamera-devel] [RFC PATCH v3 0/4] Replace boost JSON parser\n\twith libyaml in Raspberry Pi IPA","submitter":{"id":34,"url":"https://patchwork.libcamera.org/api/people/34/","name":"Naushir Patuck","email":"naush@raspberrypi.com"},"content":"Hi Laurent,\n\n\nOn Mon, 11 Jul 2022 at 21:18, Laurent Pinchart <\nlaurent.pinchart@ideasonboard.com> wrote:\n\n> Hi Naush,\n>\n> Would you be able to review this ? And could I volunteer you to handle\n> the items listed below to make this a non-RFC series ? :-) That would be\n>\n> - Adding support for a new tuning data format that doesn't rely on YAML\n> mapping ordering (it's really just about turning the mapping into a\n> list of single-entry mappings, and while at it, adding a top-level\n> version number element).\n>\n> - Update ctt to generate the new format.\n>\n> - Add a tool (Python seems to be the best option) to convert tuning\n> files from the existing format to the new format.\n>\n\nSure, I'll get to that as soon as I can.\n\nRegards,\nNaush\n\n\n>\n> On Thu, Jun 16, 2022 at 06:05:31PM +0300, Laurent Pinchart via\n> libcamera-devel wrote:\n> > Hello,\n> >\n> > As mentioned in the subject, this patch series replaces the boost JSON\n> > parser with the YamlParser implementation based on libyaml for the\n> > Raspberry Pi IPA module.\n> >\n> > Compared to v2, the base work that introduces the iterator API has been\n> > sent separately in \"[PATCH 0/7] libcamera: yaml_parser: Add iterator\n> > API\". This series then addresses the specific needs of the Raspberry Pi\n> > IPA module.\n> >\n> > The Raspberry Pi IPA tuning data contains a list of algorithms stored in\n> > a mapping. Both the JSON and the YAML specifications explicitly state\n> > that mappings are not ordered, but the IPA relies on the JSON data order\n> > being preserved by the parser. This is an implementation-specific\n> > behaviour that happens to be match the boost JSON parser implementation,\n> > but not the YamlParser class.\n> >\n> > While in a perfect world we would update the tuning data format to avoid\n> > this problem, we don't want to break every tuning file out there, and\n> > thus need to ensure backward compatibility. This is why patches 1/4 and\n> > 2/4 update the parser and iterator implementation to preserve the data\n> > order, and patches 3/4 and 4/4 then move the Raspberry Pi IPA from boost\n> > to YamlParser.\n> >\n> > If this approach is deemed reasonable, then the next non-RFC version of\n> > the series should also include a new format for the Raspberry Pi IPA\n> > tuning data that would be compliant with the JSON specification, an\n> > update to the camera tuning tool to generate tuning files in that\n> > format, and possibly a Python script to convert existing files to the\n> > new format.\n> >\n> > Laurent Pinchart (4):\n> > test: yaml-parser: Test dictionary items ordering\n> > libcamera: yaml_parser: Preserve order of items in dictionary\n> > ipa: raspberrypi: Replace tabs with spaces in tuning data files\n> > ipa: raspberrypi: Use YamlParser to replace dependency on boost\n> >\n> > README.rst | 6 --\n> > include/libcamera/internal/yaml_parser.h | 37 +++++---\n> > src/ipa/raspberrypi/controller/algorithm.cpp | 2 +-\n> > src/ipa/raspberrypi/controller/algorithm.hpp | 6 +-\n> > src/ipa/raspberrypi/controller/controller.cpp | 27 ++++--\n> > src/ipa/raspberrypi/controller/pwl.cpp | 12 ++-\n> > src/ipa/raspberrypi/controller/pwl.hpp | 5 +-\n> > src/ipa/raspberrypi/controller/rpi/agc.cpp | 94 +++++++++----------\n> > src/ipa/raspberrypi/controller/rpi/agc.hpp | 10 +-\n> > src/ipa/raspberrypi/controller/rpi/alsc.cpp | 94 +++++++++----------\n> > src/ipa/raspberrypi/controller/rpi/alsc.hpp | 2 +-\n> > src/ipa/raspberrypi/controller/rpi/awb.cpp | 89 +++++++++---------\n> > src/ipa/raspberrypi/controller/rpi/awb.hpp | 8 +-\n> > .../controller/rpi/black_level.cpp | 12 +--\n> > .../controller/rpi/black_level.hpp | 2 +-\n> > src/ipa/raspberrypi/controller/rpi/ccm.cpp | 28 +++---\n> > src/ipa/raspberrypi/controller/rpi/ccm.hpp | 4 +-\n> > .../raspberrypi/controller/rpi/contrast.cpp | 18 ++--\n> > .../raspberrypi/controller/rpi/contrast.hpp | 2 +-\n> > src/ipa/raspberrypi/controller/rpi/dpc.cpp | 4 +-\n> > src/ipa/raspberrypi/controller/rpi/dpc.hpp | 2 +-\n> > src/ipa/raspberrypi/controller/rpi/geq.cpp | 10 +-\n> > src/ipa/raspberrypi/controller/rpi/geq.hpp | 2 +-\n> > src/ipa/raspberrypi/controller/rpi/lux.cpp | 12 +--\n> > src/ipa/raspberrypi/controller/rpi/lux.hpp | 2 +-\n> > src/ipa/raspberrypi/controller/rpi/noise.cpp | 6 +-\n> > src/ipa/raspberrypi/controller/rpi/noise.hpp | 2 +-\n> > src/ipa/raspberrypi/controller/rpi/sdn.cpp | 6 +-\n> > src/ipa/raspberrypi/controller/rpi/sdn.hpp | 2 +-\n> > .../raspberrypi/controller/rpi/sharpen.cpp | 8 +-\n> > .../raspberrypi/controller/rpi/sharpen.hpp | 2 +-\n> > src/ipa/raspberrypi/data/imx219.json | 8 +-\n> > src/ipa/raspberrypi/data/imx219_noir.json | 10 +-\n> > src/ipa/raspberrypi/data/imx290.json | 18 ++--\n> > src/ipa/raspberrypi/data/imx477.json | 8 +-\n> > src/ipa/raspberrypi/data/imx477_noir.json | 10 +-\n> > src/ipa/raspberrypi/data/ov5647.json | 10 +-\n> > src/ipa/raspberrypi/data/ov5647_noir.json | 12 +--\n> > src/ipa/raspberrypi/data/se327m12.json | 6 +-\n> > src/ipa/raspberrypi/meson.build | 1 -\n> > src/ipa/raspberrypi/raspberrypi.cpp | 1 +\n> > src/libcamera/yaml_parser.cpp | 35 ++++---\n> > test/yaml-parser.cpp | 17 ++--\n> > 43 files changed, 334 insertions(+), 318 deletions(-)\n> >\n> >\n> > base-commit: c5ab0f3b64280733a10b2da39e522fe87d0d51f0\n> > --\n> > Regards,\n> >\n> > Laurent Pinchart\n> >\n>\n> --\n> Regards,\n>\n> Laurent Pinchart\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 4FEEABD1F1\n\tfor ;\n\tTue, 12 Jul 2022 08:16:13 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id A8F286330F;\n\tTue, 12 Jul 2022 10:16:12 +0200 (CEST)","from mail-lf1-x12b.google.com (mail-lf1-x12b.google.com\n\t[IPv6:2a00:1450:4864:20::12b])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 48AE36330E\n\tfor ;\n\tTue, 12 Jul 2022 10:16:10 +0200 (CEST)","by mail-lf1-x12b.google.com with SMTP id t1so9127481lft.8\n\tfor ;\n\tTue, 12 Jul 2022 01:16:10 -0700 (PDT)"],"DKIM-Signature":["v=1; 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boundary=\"000000000000e6a10b05e39747e2\"","Subject":"Re: [libcamera-devel] [RFC PATCH v3 0/4] Replace boost JSON parser\n\twith libyaml in Raspberry Pi IPA","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","From":"Naushir Patuck via libcamera-devel\n\t","Reply-To":"Naushir Patuck ","Cc":"libcamera devel ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}}]