{"id":26780,"url":"https://patchwork.libcamera.org/api/covers/26780/?format=json","web_url":"https://patchwork.libcamera.org/cover/26780/","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":"<20260519193907.86812-1-robert.mader@collabora.com>","date":"2026-05-19T19:39:02","name":"[v3,0/5] software_isp: Implement DMABuf import for input buffers","submitter":{"id":140,"url":"https://patchwork.libcamera.org/api/people/140/?format=json","name":"Robert Mader","email":"robert.mader@collabora.com"},"mbox":"https://patchwork.libcamera.org/cover/26780/mbox/","series":[{"id":5957,"url":"https://patchwork.libcamera.org/api/series/5957/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5957","date":"2026-05-19T19:39:02","name":"software_isp: Implement DMABuf import for input buffers","version":3,"mbox":"https://patchwork.libcamera.org/series/5957/mbox/"}],"comments":"https://patchwork.libcamera.org/api/covers/26780/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 7CED0BDCBC\n\tfor ;\n\tTue, 19 May 2026 19:39:40 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 7E67F62FE8;\n\tTue, 19 May 2026 21:39:39 +0200 (CEST)","from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com\n\t[136.143.188.112])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 779CB62FE8\n\tfor ;\n\tTue, 19 May 2026 21:39:37 +0200 (CEST)","by mx.zohomail.com with SMTPS id 1779219571301133.13285444909457; 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mx.zohomail.com;\n\tdkim=pass header.i=collabora.com;\n\tspf=pass smtp.mailfrom=robert.mader@collabora.com;\n\tdmarc=pass header.from=","DKIM-Signature":"v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1779219572;\n\ts=zohomail; d=collabora.com; i=robert.mader@collabora.com;\n\th=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To;\n\tbh=P83P6/7pg+VK4cB5a7Kan33WswzHyCJgkZySWPnDT0E=;\n\tb=DaX+eImJMnMHyxI6Wo8y0tfbT197ZQOLjuNefP6PAqQXpKzlVtmNKDuGumomN7QT\n\tqbZZDMt7XTm6Bm8dAYy3pGlWRp4K897XDt2OThIY1qd0H76w81fh/oE9rNl3CNISqaJ\n\tvSTMk10tHAPh6g7PFFsG5HDF895ulOAXsK+frEU0=","From":"Robert Mader ","To":"libcamera-devel@lists.libcamera.org","Cc":"Robert Mader ","Subject":"[PATCH v3 0/5] software_isp: Implement DMABuf import for input\n\tbuffers","Date":"Tue, 19 May 2026 21:39:02 +0200","Message-ID":"<20260519193907.86812-1-robert.mader@collabora.com>","X-Mailer":"git-send-email 2.54.0","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","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":"From the main commit:\nIn many cases we can import the GPU-ISP input buffer, a dmabuf from v4l2,\ndirectly into EGL instead of mapping and uploading - i.e. copying - it.\nThis reduces memory bandwidth and CPU usage and can slightly improve\nlatency.\n\nNotes: Previous iterations of these patches have already been tested on\nvarious platforms, without known regressions and showing significant\nimprovements.\n\nChanges in v3:\n- Split up changes to createTexture2D() and eGLImage constructor\n into two commits.\n- Added field to remember dmabuf import fails - and promote the relevant\n log to Info.\n- Reordered and slightly extended commit message for \"egl: Demote an\n error log to debug\"\n- Fixed some CI / linter errors\n\nChanges in v2:\n- Instead of adding parameters to createInputDMABufTexture2D(), remove\n them from createTexture2D instead.\n- Use std::optional to make the code easier to understand.\n- Move error log level change into its own commit.\n\nRobert Mader (5):\n egl: Add GL format parameter to eGLImage constructor\n egl: Remove some parameters from createTexture2D()\n debayer_egl: Implement dmabuf import for input buffers\n egl: Demote an error log to debug\n debayer_egl: Sync output buffer after processing stats\n\n include/libcamera/internal/egl.h | 8 +--\n src/libcamera/egl.cpp | 31 +++++++++---\n src/libcamera/software_isp/debayer_egl.cpp | 57 +++++++++++++---------\n src/libcamera/software_isp/debayer_egl.h | 4 +-\n 4 files changed, 65 insertions(+), 35 deletions(-)"}