diff --git a/FrOSCon26/.gitignore b/FrOSCon26/.gitignore new file mode 100644 index 0000000..994ac21 --- /dev/null +++ b/FrOSCon26/.gitignore @@ -0,0 +1,7 @@ +*.html +.project +.cproject +.settings +build +.~lock* +*.log \ No newline at end of file diff --git a/FrOSCon26/FrOSCon.26.mm b/FrOSCon26/FrOSCon.26.mm index b635342..1d12846 100644 --- a/FrOSCon26/FrOSCon.26.mm +++ b/FrOSCon26/FrOSCon.26.mm @@ -772,8 +772,8 @@ - - + + @@ -818,9 +818,32 @@ - - - + + + + + + + + + + + + + + +

+ letztes Jahr haben wir vier verschiedene Varianten gezeigt, die jeweils unterschiedliche Lib-Dependencies hatten. Deshalb war es ein Multimodule-Projekt. Das kann ich diesmal vereinfachen in ein einziges Projekt +

+ + + + + + + + + @@ -855,6 +878,99 @@ + + + + + + + + + + + + +

+ ...anders als bei dem Video-Output-Thema, bei dem wir uns die zentralen Element überhaupt erst aufschließen mußten, und dies nur mithilfe bestehender GPL-Codebasen geschafft haben. Diesmal ist die Situation ganz anders, das Thema ist ziemlich gut in Tutorials und Blogs aufbereitet. Viele haben zwar kein brauchbares Lizenz-Statement, aber andererseits ist die Aufgabe so einfach, daß ich nirgends Code abschreiben muß, den ich nicht auch genauso selber schreiben könnte. +

+ + + + + + + + + + +
    +
  • + es schaut ja eh keiner auf unseren Beispielcode. Da mach ich mir keine Illusionen. Der Code ist für "uns" selber später wichtig.... +
    • +
  • + wer interessiert sich überhaupt noch für LIzenzen, die AI stiehlt ja sowiso alles, und Jedermann kann behaupten, er hätte seine Weisheit von einem LLM. +
    • +
+ + + + + + + + + + + + +

+ mein Bauchgefühl: GPL +

+ + + + + + + + + + +

+ Das ist ein politisches Statement. Das ist wichtiger denn je +

+ + + + + + + + +

+ Der Vollständigkeit halber: es gibt den Unterschied zwischen negativer Freiheit und positiver Feiheit; letztere ist der Entschluß zu einer klar formulierten Vision. Die GPL formuliert hierzu die »vier Freiheiten«. Dahinter steht das Ideal des Gemeinwohls. Das muß leider verteidigt werden gegen Ausbeutung und Veruntreuung. +

+ + + + + + + + + + + +

+ ...und der beruht, transitiv argumentiert, nicht nur pro-forma, sondern auch dem Geist nach auf Publikationen unter Copyleft +

+ + + + + + + @@ -2049,8 +2165,8 @@ - - + + diff --git a/FrOSCon26/examples/CMakeLists.txt b/FrOSCon26/examples/CMakeLists.txt new file mode 100644 index 0000000..74fecad --- /dev/null +++ b/FrOSCon26/examples/CMakeLists.txt @@ -0,0 +1,49 @@ +# +# CMake-Build for a demo code to use io_uring and output video +# +# Copyright 2025,2026 Hermann Vosseler +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU GPL version 2+ See the LICENSE file for details. +# +cmake_minimum_required (VERSION 3.20) + +# default to Debug build type, unless specified in cache or command line +if (NOT CMAKE_BUILD_TYPE) + set (CMAKE_BUILD_TYPE Debug CACHE STRING "Default to Debug build") + set (CMAKE_VERBOSE_MAKEFILE TRUE CACHE STRING "Show full compile commands") +endif() +# optimise debugging symbols for GNU gdb +SET(CMAKE_CXX_FLAGS_DEBUG "-O0 -ggdb3" CACHE STRING "Special option for debug builds") + + + +project( + DemoUringVid + VERSION 1.0 + LANGUAGES CXX +) + +add_compile_options("-Wall") + +# dependencies via pkg-config +find_package(PkgConfig REQUIRED) +pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtkmm-3.0>=3.20) +pkg_check_modules(XLIB REQUIRED IMPORTED_TARGET x11>=1.7) +pkg_check_modules(EGL REQUIRED IMPORTED_TARGET egl>=1.5) +pkg_check_modules(GLEW REQUIRED IMPORTED_TARGET glew>=2.2) + + + +# build complete source tree (detect changes on rebuild) +file(GLOB_RECURSE demo_uring_sources CONFIGURE_DEPENDS "*.cpp") +file(GLOB_RECURSE demo_uring_headers CONFIGURE_DEPENDS "*.hpp") + +add_executable(demo_uring ${demo_uring_sources} ${demo_uring_headers}) +target_compile_features(demo_uring PUBLIC cxx_std_17) +target_include_directories(demo_uring PUBLIC $) +target_link_libraries(demo_uring PRIVATE PkgConfig::GTK) +target_link_libraries(demo_uring PRIVATE PkgConfig::XLIB) +target_link_libraries(demo_uring PRIVATE PkgConfig::EGL) +target_link_libraries(demo_uring PRIVATE PkgConfig::GLEW) + diff --git a/FrOSCon26/examples/LICENSE b/FrOSCon26/examples/LICENSE new file mode 100644 index 0000000..8c28c19 --- /dev/null +++ b/FrOSCon26/examples/LICENSE @@ -0,0 +1,351 @@ +Async IO_URING Video Example Code +================================= + +Copyright 2026 Hermann Vosseler + +The demo and example code in this directory is Free Software; +you can redistribute it and/or modify it under the terms of the +GNU General Public License as published by the Free Software Foundation; +either version 2 of the License, or (at your option) any later version. + +------------------------------------------------------------------------ + + + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/FrOSCon26/examples/demo-uring.cpp b/FrOSCon26/examples/demo-uring.cpp new file mode 100644 index 0000000..4dbca5f --- /dev/null +++ b/FrOSCon26/examples/demo-uring.cpp @@ -0,0 +1,19 @@ +/* + demo-uring.cpp - async file IO with io_uring + + Copyright (C) + 2026, Hermann Vosseler + + This program is free software; you can redistribute it and/or modify it +  under the terms of the GNU GPL version 2+ See the LICENSE file for details. + +* ************************************************************************/ + +#include + + +int +main (int, const char*[]) +{ + std::cout << "Hello Uring" << std::endl; +}