{"id":25871,"url":"https://patchwork.libcamera.org/api/1.1/patches/25871/?format=json","web_url":"https://patchwork.libcamera.org/patch/25871/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/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":"<20260120122344.28283-2-robert.mader@collabora.com>","date":"2026-01-20T12:23:44","name":"[v3,2/2] Revert \"libcamera: software_isp: gbm: Add a GBM helper class for GPU surface access\"","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"8b52d42c58244fedc7b06b559a89ba02eb20fa2e","submitter":{"id":140,"url":"https://patchwork.libcamera.org/api/1.1/people/140/?format=json","name":"Robert Mader","email":"robert.mader@collabora.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/25871/mbox/","series":[{"id":5721,"url":"https://patchwork.libcamera.org/api/1.1/series/5721/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5721","date":"2026-01-20T12:23:43","name":"[v3,1/2] egl: Use the Mesa surfaceless platform instead of GBM","version":3,"mbox":"https://patchwork.libcamera.org/series/5721/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/25871/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/25871/checks/","tags":{},"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 2090EBDCBF\n\tfor ;\n\tTue, 20 Jan 2026 12:24:11 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id BC9AB61FC7;\n\tTue, 20 Jan 2026 13:24:10 +0100 (CET)","from sender4-pp-f119.zoho.com (sender4-pp-f119.zoho.com\n\t[136.143.188.119])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 6805F61A35\n\tfor ;\n\tTue, 20 Jan 2026 13:24:08 +0100 (CET)","by mx.zohomail.com with SMTPS id 176891184191379.42758502460481;\n\tTue, 20 Jan 2026 04:24:01 -0800 (PST)"],"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=\"JpC1pNJG\"; \n\tdkim-atps=neutral","ARC-Seal":"i=1; a=rsa-sha256; t=1768911844; cv=none; \n\td=zohomail.com; s=zohoarc; \n\tb=n7tFIvZMEXjSni8diqvv3F7kufxaCruGB/EmwvLel1rVOcWW5RhjoWU8P4uV7aLoEEz/snZIkW9ocZY8W5La87h9zdOle3KGPukIiRtzhqL3Wet2buAdo9X24YiB5Mdyp+uE83AhEK6WDRVrM+hfGjpTIhYQ5HJ1ry1kJ6IF9uc=","ARC-Message-Signature":"i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; \n\ts=zohoarc; t=1768911844;\n\th=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To;\n\tbh=D+VJKpklOl27/I03rp1Z5yNul+GN1rmaqmDHc0AwQ6g=; \n\tb=ROhzr+e2tp+rEPG7tdCYRXBC62nGSTIusjz8VPJ9qGLjf1y8sP18d9Xq0DXjgkY2IZ3uRZK8MxlgFcT5EZtil0Fl+GFDzY+mJ8kUZNhu83n6ezykwY5whihiL1apKYk7KacrQDyyB9OERnrEjFrBzCm4anChyw1VxJJ4ewDqnNo=","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=","DKIM-Signature":"v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1768911844;\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:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To;\n\tbh=D+VJKpklOl27/I03rp1Z5yNul+GN1rmaqmDHc0AwQ6g=;\n\tb=JpC1pNJG5aNVul/H7A8waaTb1qLqviC0j4RLQCpdV+Ex72f4xFdduBvSd3k6u950\n\tk1hBvtivnKZ8Wi+1uXdvCjERMWHPXMR8eJrwH7LMaDFpwTyxseesaYyxb7xkt+bQ/lD\n\tsp1O50gQoCsHetePGb8WYQhQwUnKvX87JUU1bFaU=","From":"Robert Mader ","To":"libcamera-devel@lists.libcamera.org","Cc":"Robert Mader , Bryan O'Donoghue\n\t, =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?=\n\t, Laurent Pinchart\n\t","Subject":"[PATCH v3 2/2] Revert \"libcamera: software_isp: gbm: Add a GBM\n\thelper class for GPU surface access\"","Date":"Tue, 20 Jan 2026 13:23:44 +0100","Message-ID":"<20260120122344.28283-2-robert.mader@collabora.com>","X-Mailer":"git-send-email 2.52.0","In-Reply-To":"<20260120122344.28283-1-robert.mader@collabora.com>","References":"<20260120122344.28283-1-robert.mader@collabora.com>","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":"GBM is not used any more - remove the helper class.\n\nThis results in egl.cpp getting build on some setups where it previously\ndidn't, notably Debian 11 on CI, triggering a build issues. Include a\nworkaround suggested by:\nBarnabás Pőcze \n\nThis reverts commit c60b1ce8193841c2742b655097bb39ccbcb417c2.\n\nSigned-off-by: Robert Mader \nReviewed-by: Bryan O'Donoghue \nTested-by: Bryan O'Donoghue # sm8250/rb5, x1e/Dell Insprion14p\nReviewed-by: Barnabás Pőcze \nReviewed-by: Laurent Pinchart \n\n---\n\nChanges in v3:\n - Added Laurents R-B\n\nChanges in v2:\n - Added tags\n - Added build issue workaround - hope it's ok to keep the R-Bs.\n---\n include/libcamera/internal/egl.h | 5 ++\n include/libcamera/internal/gbm.h | 55 -------------\n include/libcamera/internal/meson.build | 1 -\n src/libcamera/gbm.cpp | 107 -------------------------\n src/libcamera/meson.build | 12 +--\n 5 files changed, 6 insertions(+), 174 deletions(-)\n delete mode 100644 include/libcamera/internal/gbm.h\n delete mode 100644 src/libcamera/gbm.cpp","diff":"diff --git a/include/libcamera/internal/egl.h b/include/libcamera/internal/egl.h\nindex 630345ea7..ce386554f 100644\n--- a/include/libcamera/internal/egl.h\n+++ b/include/libcamera/internal/egl.h\n@@ -16,6 +16,11 @@\n #include \n #include \n \n+/* Workaround for build issues on Mesa < 23.3, see\n+ * https://github.com/KhronosGroup/EGL-Registry/pull/130\n+ */\n+#define EGL_NO_X11\n+\n #define EGL_EGLEXT_PROTOTYPES\n #include \n #include \ndiff --git a/include/libcamera/internal/gbm.h b/include/libcamera/internal/gbm.h\ndeleted file mode 100644\nindex c10be06c1..000000000\n--- a/include/libcamera/internal/gbm.h\n+++ /dev/null\n@@ -1,55 +0,0 @@\n-/* SPDX-License-Identifier: LGPL-2.1-or-later */\n-/*\n- * Copyright (C) 2024, Linaro Ltd.\n- *\n- * Authors:\n- * Bryan O'Donoghue \n- *\n- * Helper class for managing GBM interactions\n- */\n-\n-#pragma once\n-\n-#include \n-\n-#include \n-#include \n-\n-#include \n-\n-namespace libcamera {\n-\n-LOG_DECLARE_CATEGORY(GBM)\n-\n-class GBM\n-{\n-public:\n-\tGBM();\n-\t~GBM();\n-\n-\tint createDevice();\n-\n-\t/**\n-\t * \\brief Retrieve the GBM device handle\n-\t *\n-\t * \\return Pointer to the gbm_device structure, or nullptr if the device\n-\t * has not been created\n-\t */\n-\tstruct gbm_device *device() const { return gbmDevice_; }\n-\n-\t/**\n-\t * \\brief Retrieve the pixel format\n-\t *\n-\t * \\return The PixelFormat used by this GBM instance (ARGB8888)\n-\t */\n-\tPixelFormat format() const { return format_; }\n-\n-private:\n-\tLIBCAMERA_DISABLE_COPY_AND_MOVE(GBM)\n-\n-\tUniqueFD fd_;\n-\tstruct gbm_device *gbmDevice_ = nullptr;\n-\tPixelFormat format_;\n-};\n-\n-} /* namespace libcamera */\ndiff --git a/include/libcamera/internal/meson.build b/include/libcamera/internal/meson.build\nindex dc48619e5..4d2a09bd7 100644\n--- a/include/libcamera/internal/meson.build\n+++ b/include/libcamera/internal/meson.build\n@@ -24,7 +24,6 @@ libcamera_internal_headers = files([\n 'formats.h',\n 'framebuffer.h',\n 'egl.h',\n- 'gbm.h',\n 'global_configuration.h',\n 'ipa_data_serializer.h',\n 'ipa_manager.h',\ndiff --git a/src/libcamera/gbm.cpp b/src/libcamera/gbm.cpp\ndeleted file mode 100644\nindex d37808b0c..000000000\n--- a/src/libcamera/gbm.cpp\n+++ /dev/null\n@@ -1,107 +0,0 @@\n-/* SPDX-License-Identifier: LGPL-2.1-or-later */\n-/*\n- * Copyright (C) 2024, Linaro Ltd.\n- *\n- * Authors:\n- * Bryan O'Donoghue \n- *\n- * Helper class for managing GBM interactions\n- */\n-\n-#include \"libcamera/internal/gbm.h\"\n-\n-#include \n-#include \n-#include \n-#include \n-#include \n-\n-#include \n-#include \n-\n-namespace libcamera {\n-\n-LOG_DEFINE_CATEGORY(GBM)\n-\n-/**\n- * \\class GBM\n- * \\brief Helper class for managing GBM interactions\n- *\n- * The GBM class provides a simplified interface for creating and managing\n- * GBM devices. It handles the initialization and teardown of GBM devices\n- * used for buffer allocation in graphics and camera pipelines.\n- *\n- * This class is responsible for opening a DRI render node, creating a GBM\n- * device, and providing access to the device and its associated pixel format.\n- */\n-\n-/**\n- *\\var GBM::fd_\n- *\\brief file descriptor to DRI device\n- */\n-\n-/**\n- *\\var GBM::gbmDevice_\n- *\\brief Pointer to GBM device structure derived from fd_\n- */\n-\n-/**\n- *\\var GBM::format_\n- *\\brief Pixel format the GBM surface was created in\n- */\n-\n-/**\n- *\\brief GBM constructor.\n- *\n- * Creates a GBM instance with uninitialised state.\n- */\n-GBM::GBM()\n-{\n-}\n-\n-/**\n- *\\brief GBM destructor\n- *\n- * Cleans up the GBM device if it was successfully created, and closes\n- * the associated file descriptor.\n- */\n-GBM::~GBM()\n-{\n-\tif (gbmDevice_)\n-\t\tgbm_device_destroy(gbmDevice_);\n-}\n-\n-/**\n- * \\brief Create and initialize a GBM device\n- *\n- * \\todo Get dri device name from envOption setting\n- *\n- * Opens the DRI render node (/dev/dri/renderD128) and creates a GBM\n- * device using the libgbm library. Sets the default pixel format to\n- * ARGB8888.\n- *\n- * \\return 0 on success, or a negative error code on failure\n- */\n-int GBM::createDevice()\n-{\n-\tconst char dri_node[] = \"/dev/dri/renderD128\";\n-\n-\tint fd = open(dri_node, O_RDWR | O_CLOEXEC | O_NOCTTY);\n-\tif (fd < 0) {\n-\t\tLOG(GBM, Error) << \"Open \" << dri_node << \" fail \" << strerror(errno);\n-\t\treturn -errno;\n-\t}\n-\tfd_ = UniqueFD(fd);\n-\n-\tgbmDevice_ = gbm_create_device(fd_.get());\n-\tif (!gbmDevice_) {\n-\t\tLOG(GBM, Error) << \"gbm_create_device fail\" << strerror(errno);\n-\t\treturn -errno;\n-\t}\n-\n-\tformat_ = libcamera::formats::ARGB8888;\n-\n-\treturn 0;\n-}\n-\n-} /* namespace libcamera */\ndiff --git a/src/libcamera/meson.build b/src/libcamera/meson.build\nindex 6f952bd98..d15943586 100644\n--- a/src/libcamera/meson.build\n+++ b/src/libcamera/meson.build\n@@ -70,15 +70,6 @@ libcamera_deps = []\n libatomic = cc.find_library('atomic', required : false)\n libthreads = dependency('threads')\n \n-libgbm = dependency('gbm', required : false)\n-gbm_works = cc.check_header('gbm.h', required: false)\n-\n-if libgbm.found() and gbm_works\n- libcamera_internal_sources += files([\n- 'gbm.cpp',\n- ])\n-endif\n-\n mesa_works = cc.check_header('EGL/egl.h', required: false)\n libegl = dependency('egl', required : false)\n libglesv2 = dependency('glesv2', required : false)\n@@ -91,7 +82,7 @@ if libglesv2.found()\n config_h.set('HAVE_GLESV2', 1)\n endif\n \n-if mesa_works and gbm_works\n+if mesa_works\n libcamera_internal_sources += files([\n 'egl.cpp',\n ])\n@@ -209,7 +200,6 @@ libcamera_deps += [\n libcrypto,\n libdl,\n libegl,\n- libgbm,\n libglesv2,\n liblttng,\n libudev,\n","prefixes":["v3","2/2"]}