{"id":26668,"url":"https://patchwork.libcamera.org/api/covers/26668/?format=json","web_url":"https://patchwork.libcamera.org/cover/26668/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260507-extensible-stats-v2-0-dfca939ad327@ideasonboard.com>","date":"2026-05-07T10:07:53","name":"[v2,0/3] ipa: libipa: Add support for V4L2 ISP statistics","submitter":{"id":143,"url":"https://patchwork.libcamera.org/api/people/143/?format=json","name":"Jacopo Mondi","email":"jacopo.mondi@ideasonboard.com"},"mbox":"https://patchwork.libcamera.org/cover/26668/mbox/","series":[{"id":5916,"url":"https://patchwork.libcamera.org/api/series/5916/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5916","date":"2026-05-07T10:07:53","name":"ipa: libipa: Add support for V4L2 ISP statistics","version":2,"mbox":"https://patchwork.libcamera.org/series/5916/mbox/"}],"comments":"https://patchwork.libcamera.org/api/covers/26668/comments/","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 27A8FBDCB5\n\tfor ;\n\tThu, 7 May 2026 10:08:11 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 706DD63024;\n\tThu, 7 May 2026 12:08:09 +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 A045262010\n\tfor ;\n\tThu, 7 May 2026 12:08:06 +0200 (CEST)","from [192.168.1.104] (net-93-65-100-155.cust.vodafonedsl.it\n\t[93.65.100.155])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 36614B63;\n\tThu, 7 May 2026 12:08:02 +0200 (CEST)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"HXvHWi9T\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1778148482;\n\tbh=fdBwTgzmhb2OtDPff8FFBSIAVeeE4uq8dI544aV+S7U=;\n\th=From:Subject:Date:To:Cc:From;\n\tb=HXvHWi9TCvhfR/ZTDF0RbG9nKweKxORclW3FZ7c1Mn4p/i8XDn2ah6SOwE55WJ2Fn\n\t8WmNUhaPGxmWSbwkkCD5znt2wn5S1Qd4tb/YrRTGkhoiyP9GjBTRoqmT7HBVl8PkUq\n\tyulZbiGRGJ18X/Uaj+HH14YEIaeYE3E1j/irkWp8=","From":"Jacopo Mondi ","Subject":"[PATCH v2 0/3] ipa: libipa: Add support for V4L2 ISP statistics","Date":"Thu, 07 May 2026 12:07:53 +0200","Message-Id":"<20260507-extensible-stats-v2-0-dfca939ad327@ideasonboard.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","X-B4-Tracking":"v=1; b=H4sIAHlk/GkC/32NQQrCMBBFr1JmbSQNtimuvEfpItOMdkATyYRQK\n\tb27sQdw+R789zcQSkwC12aDRIWFY6hgTg3MiwsPUuwrg9Gm153uFK2ZgjA+SUl2WZS1xgwW6YJ\n\tugDp7J7rzeiTHqfLCkmP6HA+l/dk/sdIqrTR2/WyxRfT9jT05iQGjS/48xxdM+75/ATksGCC3A\n\tAAA","X-Change-ID":"20260505-extensible-stats-772287be4ba8","To":"libcamera-devel@lists.libcamera.org, \n\tAntoine Bouyer ","Cc":"Jacopo Mondi , Kieran Bingham\n\t, Laurent Pinchart\n\t, =?utf-8?b?QmFybmFiw6FzIFDFkWN6?=\n\t=?utf-8?q?e?= ","X-Mailer":"b4 0.14.3","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1531;\n\ti=jacopo.mondi@ideasonboard.com; h=from:subject:message-id;\n\tbh=fdBwTgzmhb2OtDPff8FFBSIAVeeE4uq8dI544aV+S7U=;\n\tb=owEBbQKS/ZANAwAKAXI0Bo8WoVY8AcsmYgBp/GSF2BHUi9EPcCqJ8/qGmxhHJdInqtC2HgBy9\n\tTrVBlqOc+yJAjMEAAEKAB0WIQS1xD1IgJogio9YOMByNAaPFqFWPAUCafxkhQAKCRByNAaPFqFW\n\tPAUsD/9QXiPj1/eL8qoHcfuTnwTCPUtR8fbFnqmAGij2RmeGgoLnTYCGGkpe9zKklsnoh/O/06h\n\tO4NMyhYZykH/KYIKPvyHY0bngyLQrOE01Y0+86BUIMlMoZdw4yl/2seFtr2Gtw0P5NstxOaG0N3\n\tPRGb5/8bhg0hSrRT2hXmV/AnsTfNf+gi+IIYrfNGnGFYBhSWMS7pm7VsUw4Le6w/CNhfyod831m\n\trdL55e0cQ9UMCei8InGfSGVV+7Vjb/DS9mQy5jCvR7QNFl85tKswbUOe62nXzz87R5EuVV/uHXC\n\tkPVOia1nmQn4n8BJYoEIRYceMZ3yPfxrBASNm5s6BqlmpGibBW6nbyHDWW9OJN36T7K2PpvRdVl\n\tVqQ7e8jNJV5ZaYSDLIfIDDMNlPsU5ls8vm+jjPLI7m+3IlobNJ9BUQL89q1PXrvagd+7Y36gGm/\n\t7XpjySsHK7No73OMuZjuCmIUPG8ETFydHGpKbfFfHlOLzgcXTLx8uFgBtq0OnRjn4sLI7Y23+3r\n\tJTedyVW9zwrGj+tBtbYEVEwA4fUhh1ZDOaMoHU+toAGAY56Q7ZBfoXeDNiZOLJ56Vg6gTEg6YwU\n\t+hZTBBD33EmE73qaQJdEoDIcXEu0/FwT7aM5dR7nm7tBdaQnkhiQpS0VzwWGzcAdjK5Azgr3HIz\n\tTU3Yu8rL4lJkJ9Q==","X-Developer-Key":"i=jacopo.mondi@ideasonboard.com; a=openpgp;\n\tfpr=72392EDC88144A65C701EA9BA5826A2587AD026B","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\" "},"content":"Support for extensible stats has been submitted for review first by\nAntonie then broken-out to a dedicated patch series here:\nhttps://patchwork.linuxtv.org/project/linux-media/list/?series=24772\n\nWith the same spirit as V4L2Params, introduce a V4L2Stats class to help\nIPA modules handle a buffer of V4L2 ISP statistics.\n\nThere are currently no users in-tree of the class but we have an example\nuser in the RPP-X1 IPA module available at:\nhttps://gitlab.freedesktop.org/jmondi/libcamera/-/blob/v4h/jmondi/rppx1/src/ipa/rppx1/stats.h\nhttps://gitlab.freedesktop.org/jmondi/libcamera/-/blob/v4h/jmondi/rppx1/src/ipa/rppx1/algorithms/awb.cpp#L365\n\non top, a drive-by change to V4L2Params.\n\nSigned-off-by: Jacopo Mondi \n---\nChanges in v2:\n- Address Kieran's and Barnabas' comment\n\n---\nJacopo Mondi (3):\n include: v4l2-isp: Update to support extensible stats\n ipa: libipa: Introduce V4L2Stats\n ipa: libipa: v4l2_params: Fix code example in doc\n\n include/linux/media/v4l2-isp.h | 125 ++++++++++++++---------\n src/ipa/libipa/meson.build | 2 +\n src/ipa/libipa/v4l2_params.cpp | 4 +-\n src/ipa/libipa/v4l2_stats.cpp | 226 +++++++++++++++++++++++++++++++++++++++++\n src/ipa/libipa/v4l2_stats.h | 123 ++++++++++++++++++++++\n 5 files changed, 432 insertions(+), 48 deletions(-)\n---\nbase-commit: 39d8133fd17c1e963981490105a154d78eb6cb43\nchange-id: 20260505-extensible-stats-772287be4ba8\n\nBest regards,"}