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{ "id": 26780, "url": "https://patchwork.libcamera.org/api/covers/26780/?format=api", "web_url": "https://patchwork.libcamera.org/cover/26780/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/projects/1/?format=api", "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=api", "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=api", "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": "<libcamera-devel-bounces@lists.libcamera.org>", "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 <parsemail@patchwork.libcamera.org>;\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 <libcamera-devel@lists.libcamera.org>;\n\tTue, 19 May 2026 21:39:37 +0200 (CEST)", "by mx.zohomail.com with SMTPS id 1779219571301133.13285444909457; \n\tTue, 19 May 2026 12:39:31 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=collabora.com\n\theader.i=robert.mader@collabora.com header.b=\"DaX+eImJ\"; \n\tdkim-atps=neutral", "ARC-Seal": "i=1; a=rsa-sha256; t=1779219572; cv=none; \n\td=zohomail.com; s=zohoarc; \n\tb=NL6JkY6KM1roc2Fb1L3BZ7R2uzleu9OMJFMiXMeLD+xvSiykSWsiAh1sudmptYf6PhNOuUOkoE2afxqY3w3vTskRNvd1rzUfZmPEiSK83gvkVtluWWEwsPf+ANM7dCXcxh7oRu2V7xMubebvGxzRl8ScLDBPvhO9/aQj0wqG8ic=", "ARC-Message-Signature": "i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; \n\ts=zohoarc; t=1779219572;\n\th=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To;\n\tbh=P83P6/7pg+VK4cB5a7Kan33WswzHyCJgkZySWPnDT0E=; \n\tb=IpeSzaSgTy9O5x9I8WF87F0VMcXYSZe+GiVPVXrw/detjA7dpu16sG4kn/Q8Uh2f/t6m9V/Odaj21WA3vBLl6WmfY/6ZRr3ErcmRhh+GrZ1SbP7r4WaX/TXEmfmMxQMOhwIoNUOq7gLwF/rz2YKwD5OCEmgyYc8etHFUtGCdoxk=", "ARC-Authentication-Results": "i=1; mx.zohomail.com;\n\tdkim=pass header.i=collabora.com;\n\tspf=pass smtp.mailfrom=robert.mader@collabora.com;\n\tdmarc=pass header.from=<robert.mader@collabora.com>", "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 <robert.mader@collabora.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Robert Mader <robert.mader@collabora.com>", "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": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "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<DmaSyncer> 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(-)" }