{"id":25713,"url":"https://patchwork.libcamera.org/api/1.1/patches/25713/?format=json","web_url":"https://patchwork.libcamera.org/patch/25713/","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":"<20260110221337.145378-2-robert.mader@collabora.com>","date":"2026-01-10T22:13:37","name":"[2/2] Revert \"libcamera: software_isp: gbm: Add a GBM helper class for GPU surface access\"","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"a11bd5bbe2c440013a866c3c4e5cc1a58add074f","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/25713/mbox/","series":[{"id":5700,"url":"https://patchwork.libcamera.org/api/1.1/series/5700/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5700","date":"2026-01-10T22:13:36","name":"[1/2] egl: Use the Mesa surfaceless platform instead of GBM","version":1,"mbox":"https://patchwork.libcamera.org/series/5700/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/25713/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/25713/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 CF8FDBDCBF\n\tfor ;\n\tSat, 10 Jan 2026 22:14:11 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 7A4D661FC4;\n\tSat, 10 Jan 2026 23:14:11 +0100 (CET)","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 1F3A561A35\n\tfor ;\n\tSat, 10 Jan 2026 23:14:08 +0100 (CET)","by mx.zohomail.com with SMTPS id 1768083243102915.5716527798162;\n\tSat, 10 Jan 2026 14:14:03 -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=\"kED5V2FK\"; \n\tdkim-atps=neutral","ARC-Seal":"i=1; a=rsa-sha256; t=1768083244; cv=none; \n\td=zohomail.com; s=zohoarc; \n\tb=lxtU/dJx0WuuXTX6B1K09W2MUE5XkU3HPccr4pecEzeTX+k1aDu46x9Lbykc9HsARFJB0yvq8pYpQYGfnmC8KuLwO9cXAuKkFtx1yffr6XEivndpVqtDVLOdwnsgjgZOKbbbiiXbBLLoZZ2EcW25bfhSxNWHOnpavgFPrQ2oxl0=","ARC-Message-Signature":"i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; \n\ts=zohoarc; t=1768083244;\n\th=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=TCeqJBig0Vxz6BFsgYrsU2iIel+rHXFKLVO7rNnN1VM=; \n\tb=PfPCDDA11KN0flYOxts+Ic2vWSgEpswTmUypWJdqGumFxw+xvCWd59oxYRrpbR6fmqwNj9FuTBVGh9ORFOwip6FV+OdTrJZ8nAzCk2XJWtwdohDfquuLHpjgtpGBzQ2F7AJVkxdAzd8MzEXIiuEoQXnk9y+BD5IbYf38pCfQ2a8=","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=1768083244;\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-Transfer-Encoding:Message-Id:Reply-To;\n\tbh=TCeqJBig0Vxz6BFsgYrsU2iIel+rHXFKLVO7rNnN1VM=;\n\tb=kED5V2FKuuo2D6RhbL7Ug+dM1mzh+NqSWdhAO/iN+FWlDOSr8ZNuI7om7BNfvBW1\n\tgvQynYfFQ0oeoVLSb3hbqtM78jyJGJE0EbAlsbn6VZ+H//4Oulowej6KSCARFTG0e5j\n\tya0I0Du+dWCfIXb1a5gHTILutqgPZDbS2QibgmC0=","From":"Robert Mader ","To":"libcamera-devel@lists.libcamera.org","Cc":"Robert Mader ","Subject":"[PATCH 2/2] Revert \"libcamera: software_isp: gbm: Add a GBM helper\n\tclass for GPU surface access\"","Date":"Sat, 10 Jan 2026 23:13:37 +0100","Message-ID":"<20260110221337.145378-2-robert.mader@collabora.com>","X-Mailer":"git-send-email 2.52.0","In-Reply-To":"<20260110221337.145378-1-robert.mader@collabora.com>","References":"<20260110221337.145378-1-robert.mader@collabora.com>","MIME-Version":"1.0","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 reverts commit c60b1ce8193841c2742b655097bb39ccbcb417c2.\n\nSigned-off-by: Robert Mader \n---\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 4 files changed, 1 insertion(+), 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/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":["2/2"]}