[{"id":33180,"web_url":"https://patchwork.libcamera.org/comment/33180/","msgid":"<20250126215817.GD1133@pendragon.ideasonboard.com>","date":"2025-01-26T21:58:17","subject":"Re: [RFC PATCH v2 00/13] Enable raw streams with software ISP","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"content":"Hi Milan,\n\nOn Fri, Jan 24, 2025 at 10:57:51PM +0100, Milan Zamazal wrote:\n> This makes raw streams working again in ‘simple’ pipeline when software\n> ISP is enabled for the given device. At most one raw stream and one\n> processed stream (possibly both at once) are supported.\n> \n> An example ‘cam’ invocation requesting a raw stream rather than a debayered stream:\n> \n> cam -c1 -C8 -s role=raw,width=1920,height=1080 -Ffile#.raw\n> \n> Or for both raw and processed streams:\n> \n> cam -c1 -C8 -s role=raw,width=1920,height=1080,pixelformat=SRGGB8 -s role=viewfinder,width=1920,height=1080,pixelformat=RGB888 -Ffile#\n> \n> When only a raw stream is requested, there are no exposure/gain\n> adjustments applied. This could be improved in future, once software\n> ISP gets a mechanism to gather image statistics without processing and\n> using them to make the adjustments, or once manual exposure controls are\n> added to software ISP. In the meantime, exposure must be changed\n> externally.\n\nThis is fine.\n\n> A part of the patches is a small change to ‘cam’ PPM file handling, to\n> be able to produce PPM files together with raw files when both processed\n> and raw streams are requested.\n> \n> The patches are RFC because I’m not sure whether they are implemented\n> properly. It’s also necessary to determine the right balance between\n> the requested functionality (single raw + processed streams should be\n> enough for current needs), cleanness of the implementation and the\n> complexity of the patches.\n\nThe famous yak shaving balance.\n\nAs you'll see in the review of individual patches, I think there's some\ncleanup to be done. The good news is that we don't need a full yak\nshaving, just trimming some edges :-)\n\n> Changes in v2:\n> - Completely reworked.\n> - Extended to be able to produce a raw stream together with a processed\n> stream.\n> \n> Milan Zamazal (13):\n> libcamera: software_isp: Move a non-loop condition out of the loop\n> libcamera: simple: Increase the default number of streams to 2\n> libcamera: simple: Don't use raw output formats with conversions\n> libcamera: simple: Add plain output configurations to software ISP\n> libcamera: simple: Identify requested stream roles\n> libcamera: simple: Protect against null maxPipeConfig\n> libcamera: simple: Consider raw output configurations\n> libcamera: simple: Handle adjusted and raw configurations separately\n> libcamera: simple: Don't use conversion with an added raw stream\n> libcamera: simple: Make raw streams working\n> apps: ppm_writer: Add a missing include\n> apps: ppm_writer: Return EIO on I/O errors\n> apps: cam: Write raw file if PPM cannot be written\n> \n> src/apps/cam/file_sink.cpp | 16 +-\n> src/apps/common/ppm_writer.cpp | 7 +-\n> src/libcamera/pipeline/simple/simple.cpp | 188 ++++++++++++++++----\n> src/libcamera/software_isp/software_isp.cpp | 7 +-\n> 4 files changed, 168 insertions(+), 50 deletions(-)","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 E3AE5BEFBE\n\tfor ;\n\tSun, 26 Jan 2025 21:58:30 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id ED74C68557;\n\tSun, 26 Jan 2025 22:58:29 +0100 (CET)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 948B268506\n\tfor ;\n\tSun, 26 Jan 2025 22:58:28 +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 8248FBC0;\n\tSun, 26 Jan 2025 22:57:22 +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=\"kVfWKoJ4\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1737928642;\n\tbh=+kVir6ZCYhoetYwr5dyM3IfFpem1EMx8PDegOtot8Z0=;\n\th=Date:From:To:Cc:Subject:References:In-Reply-To:From;\n\tb=kVfWKoJ4MTPeq5JXEQBBmHGiuuY0rbHl7sQ4jnik7b7sJj22k9TpaOwgFsUN4SsfD\n\t1oMNcMcLEOFuwPR9ARI6jm59O0R+NMVQ427rdv2nZBgdD5VUKRPFD7+e4vWllMCBrz\n\tHO1uICqmV/mYddyVT6w5D+CkEWVIr0nZZXjPvZSM=","Date":"Sun, 26 Jan 2025 23:58:17 +0200","From":"Laurent Pinchart ","To":"Milan Zamazal ","Cc":"libcamera-devel@lists.libcamera.org","Subject":"Re: [RFC PATCH v2 00/13] Enable raw streams with software ISP","Message-ID":"<20250126215817.GD1133@pendragon.ideasonboard.com>","References":"<20250124215806.158024-1-mzamazal@redhat.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=utf-8","Content-Disposition":"inline","Content-Transfer-Encoding":"8bit","In-Reply-To":"<20250124215806.158024-1-mzamazal@redhat.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":33181,"web_url":"https://patchwork.libcamera.org/comment/33181/","msgid":"<20250126221802.GB1059@pendragon.ideasonboard.com>","date":"2025-01-26T22:18:02","subject":"Re: [RFC PATCH v2 00/13] Enable raw streams with software ISP","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"content":"I've pushed patches 01/13, 11/13 and 12/13 already.\n\nOn Sun, Jan 26, 2025 at 11:58:17PM +0200, Laurent Pinchart wrote:\n> On Fri, Jan 24, 2025 at 10:57:51PM +0100, Milan Zamazal wrote:\n> > This makes raw streams working again in ‘simple’ pipeline when software\n> > ISP is enabled for the given device. At most one raw stream and one\n> > processed stream (possibly both at once) are supported.\n> > \n> > An example ‘cam’ invocation requesting a raw stream rather than a debayered stream:\n> > \n> > cam -c1 -C8 -s role=raw,width=1920,height=1080 -Ffile#.raw\n> > \n> > Or for both raw and processed streams:\n> > \n> > cam -c1 -C8 -s role=raw,width=1920,height=1080,pixelformat=SRGGB8 -s role=viewfinder,width=1920,height=1080,pixelformat=RGB888 -Ffile#\n> > \n> > When only a raw stream is requested, there are no exposure/gain\n> > adjustments applied. This could be improved in future, once software\n> > ISP gets a mechanism to gather image statistics without processing and\n> > using them to make the adjustments, or once manual exposure controls are\n> > added to software ISP. In the meantime, exposure must be changed\n> > externally.\n> \n> This is fine.\n> \n> > A part of the patches is a small change to ‘cam’ PPM file handling, to\n> > be able to produce PPM files together with raw files when both processed\n> > and raw streams are requested.\n> > \n> > The patches are RFC because I’m not sure whether they are implemented\n> > properly. It’s also necessary to determine the right balance between\n> > the requested functionality (single raw + processed streams should be\n> > enough for current needs), cleanness of the implementation and the\n> > complexity of the patches.\n> \n> The famous yak shaving balance.\n> \n> As you'll see in the review of individual patches, I think there's some\n> cleanup to be done. The good news is that we don't need a full yak\n> shaving, just trimming some edges :-)\n> \n> > Changes in v2:\n> > - Completely reworked.\n> > - Extended to be able to produce a raw stream together with a processed\n> > stream.\n> > \n> > Milan Zamazal (13):\n> > libcamera: software_isp: Move a non-loop condition out of the loop\n> > libcamera: simple: Increase the default number of streams to 2\n> > libcamera: simple: Don't use raw output formats with conversions\n> > libcamera: simple: Add plain output configurations to software ISP\n> > libcamera: simple: Identify requested stream roles\n> > libcamera: simple: Protect against null maxPipeConfig\n> > libcamera: simple: Consider raw output configurations\n> > libcamera: simple: Handle adjusted and raw configurations separately\n> > libcamera: simple: Don't use conversion with an added raw stream\n> > libcamera: simple: Make raw streams working\n> > apps: ppm_writer: Add a missing include\n> > apps: ppm_writer: Return EIO on I/O errors\n> > apps: cam: Write raw file if PPM cannot be written\n> > \n> > src/apps/cam/file_sink.cpp | 16 +-\n> > src/apps/common/ppm_writer.cpp | 7 +-\n> > src/libcamera/pipeline/simple/simple.cpp | 188 ++++++++++++++++----\n> > src/libcamera/software_isp/software_isp.cpp | 7 +-\n> > 4 files changed, 168 insertions(+), 50 deletions(-)","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 2A778BDCBF\n\tfor ;\n\tSun, 26 Jan 2025 22:18:16 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id F0ABE6855D;\n\tSun, 26 Jan 2025 23:18:14 +0100 (CET)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 4A06668506\n\tfor ;\n\tSun, 26 Jan 2025 23:18:13 +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 3E3DE78C;\n\tSun, 26 Jan 2025 23:17:07 +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=\"I5C95olU\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1737929827;\n\tbh=3dR/0VZOxXmRjTYMnSx6/jOdaOGYYc8fUsSJSwHz4yc=;\n\th=Date:From:To:Cc:Subject:References:In-Reply-To:From;\n\tb=I5C95olU0cZsCaiGvchaQ/qwrkcYeYvL+az2+fOikZ2B6zvtgZ0ZX/lMlvRXtuKM/\n\tjzF+xMdBu8yB9Px3axmgh6QjbTtcdoh6BBHqQzKiB8AHpSlxU/ImUXHQd9jY6dlJpP\n\tDiS/us9Bl19LllUovZor8S9wxnybX6yLwPmQk/BI=","Date":"Mon, 27 Jan 2025 00:18:02 +0200","From":"Laurent Pinchart ","To":"Milan Zamazal ","Cc":"libcamera-devel@lists.libcamera.org","Subject":"Re: [RFC PATCH v2 00/13] Enable raw streams with software ISP","Message-ID":"<20250126221802.GB1059@pendragon.ideasonboard.com>","References":"<20250124215806.158024-1-mzamazal@redhat.com>\n\t<20250126215817.GD1133@pendragon.ideasonboard.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=utf-8","Content-Disposition":"inline","Content-Transfer-Encoding":"8bit","In-Reply-To":"<20250126215817.GD1133@pendragon.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":33587,"web_url":"https://patchwork.libcamera.org/comment/33587/","msgid":"<85y0xj466y.fsf@mzamazal-thinkpadp1gen7.tpbc.csb>","date":"2025-03-05T19:40:21","subject":"Re: [RFC PATCH v2 00/13] Enable raw streams with software ISP","submitter":{"id":177,"url":"https://patchwork.libcamera.org/api/people/177/","name":"Milan Zamazal","email":"mzamazal@redhat.com"},"content":"Hi Laurent,\n\nthank you for the reviews.\n\nLaurent Pinchart writes:\n\n> Hi Milan,\n>\n> On Fri, Jan 24, 2025 at 10:57:51PM +0100, Milan Zamazal wrote:\n>> This makes raw streams working again in ‘simple’ pipeline when software\n>> ISP is enabled for the given device. At most one raw stream and one\n>> processed stream (possibly both at once) are supported.\n>> \n>> An example ‘cam’ invocation requesting a raw stream rather than a debayered stream:\n>> \n>> cam -c1 -C8 -s role=raw,width=1920,height=1080 -Ffile#.raw\n>> \n>> Or for both raw and processed streams:\n>> \n>> cam -c1 -C8 -s role=raw,width=1920,height=1080,pixelformat=SRGGB8 -s\n>> role=viewfinder,width=1920,height=1080,pixelformat=RGB888 -Ffile#\n>> \n>> When only a raw stream is requested, there are no exposure/gain\n>> adjustments applied. This could be improved in future, once software\n>> ISP gets a mechanism to gather image statistics without processing and\n>> using them to make the adjustments, or once manual exposure controls are\n>> added to software ISP. In the meantime, exposure must be changed\n>> externally.\n>\n> This is fine.\n>\n>> A part of the patches is a small change to ‘cam’ PPM file handling, to\n>> be able to produce PPM files together with raw files when both processed\n>> and raw streams are requested.\n>> \n>> The patches are RFC because I’m not sure whether they are implemented\n>> properly. It’s also necessary to determine the right balance between\n>> the requested functionality (single raw + processed streams should be\n>> enough for current needs), cleanness of the implementation and the\n>> complexity of the patches.\n>\n> The famous yak shaving balance.\n>\n> As you'll see in the review of individual patches, I think there's some\n> cleanup to be done. \n\nI agree completely. I think v3 is a much better version and a good step\nin the iterative process of progressing from a proof of concept and\nguesswork to a better understanding and making a usable code.\n\n> The good news is that we don't need a full yak shaving, just trimming\n> some edges :-)\n\nI tried to save the poor yak and although the v3 patches are\nsignificantly reworked, I tried to make them relatively modest. Let's\nsee how much it works for you; I admit I have been struggling with all\nthe details when working on v3 and may have missed the bigger picture.\n\n>> Changes in v2:\n>> - Completely reworked.\n>> - Extended to be able to produce a raw stream together with a processed\n>> stream.\n>> \n>> Milan Zamazal (13):\n>> libcamera: software_isp: Move a non-loop condition out of the loop\n>> libcamera: simple: Increase the default number of streams to 2\n>> libcamera: simple: Don't use raw output formats with conversions\n>> libcamera: simple: Add plain output configurations to software ISP\n>> libcamera: simple: Identify requested stream roles\n>> libcamera: simple: Protect against null maxPipeConfig\n>> libcamera: simple: Consider raw output configurations\n>> libcamera: simple: Handle adjusted and raw configurations separately\n>> libcamera: simple: Don't use conversion with an added raw stream\n>> libcamera: simple: Make raw streams working\n>> apps: ppm_writer: Add a missing include\n>> apps: ppm_writer: Return EIO on I/O errors\n>> apps: cam: Write raw file if PPM cannot be written\n>> \n>> src/apps/cam/file_sink.cpp | 16 +-\n>> src/apps/common/ppm_writer.cpp | 7 +-\n>> src/libcamera/pipeline/simple/simple.cpp | 188 ++++++++++++++++----\n>> src/libcamera/software_isp/software_isp.cpp | 7 +-\n>> 4 files changed, 168 insertions(+), 50 deletions(-)","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 208FAC3257\n\tfor ;\n\tWed, 5 Mar 2025 19:40:32 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 0BCFC687FA;\n\tWed, 5 Mar 2025 20:40:31 +0100 (CET)","from us-smtp-delivery-124.mimecast.com\n\t(us-smtp-delivery-124.mimecast.com [170.10.133.124])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id A09A168777\n\tfor ;\n\tWed, 5 Mar 2025 20:40:29 +0100 (CET)","from mail-wm1-f71.google.com (mail-wm1-f71.google.com\n\t[209.85.128.71]) by relay.mimecast.com with ESMTP with STARTTLS\n\t(version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id\n\tus-mta-696-qk3LozQtMa-YwsV81p2iSw-1; Wed, 05 Mar 2025 14:40:25 -0500","by mail-wm1-f71.google.com with SMTP id\n\t5b1f17b1804b1-43bc1aa0673so16858355e9.2\n\tfor ;\n\tWed, 05 Mar 2025 11:40:24 -0800 (PST)","from mzamazal-thinkpadp1gen7.tpbc.csb\n\t(ip-77-48-47-2.net.vodafone.cz. 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