From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c | 211 +++++++++++++++++++++++++++ 1 file changed, 211 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c (limited to 'contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c') diff --git a/contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c b/contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c new file mode 100644 index 0000000..7c48ed5 --- /dev/null +++ b/contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c @@ -0,0 +1,211 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "SDL_internal.h" + +#ifdef SDL_VIDEO_DRIVER_X11 + +#define DEBUG_DYNAMIC_X11 0 + +#include "SDL_x11dyn.h" + +#if DEBUG_DYNAMIC_X11 +#include +#endif + +#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC + +typedef struct +{ + SDL_SharedObject *lib; + const char *libname; +} x11dynlib; + +#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT +#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT NULL +#endif +#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR +#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR NULL +#endif +#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 +#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 NULL +#endif +#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES +#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES NULL +#endif +#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR +#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR NULL +#endif +#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS +#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS NULL +#endif + +static x11dynlib x11libs[] = { + { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC }, + { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT }, + { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR }, + { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 }, + { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES }, + { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR }, + { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS } +}; + +static void *X11_GetSym(const char *fnname, int *pHasModule) +{ + int i; + void *fn = NULL; + for (i = 0; i < SDL_arraysize(x11libs); i++) { + if (x11libs[i].lib) { + fn = SDL_LoadFunction(x11libs[i].lib, fnname); + if (fn) { + break; + } + } + } + +#if DEBUG_DYNAMIC_X11 + if (fn) + printf("X11: Found '%s' in %s (%p)\n", fnname, x11libs[i].libname, fn); + else + printf("X11: Symbol '%s' NOT FOUND!\n", fnname); +#endif + + if (!fn) { + *pHasModule = 0; // kill this module. + } + + return fn; +} + +#endif // SDL_VIDEO_DRIVER_X11_DYNAMIC + +// Define all the function pointers and wrappers... +#define SDL_X11_SYM(rc, fn, params, args, ret) SDL_DYNX11FN_##fn X11_##fn = NULL; +#include "SDL_x11sym.h" + +// Annoying varargs entry point... +#ifdef X_HAVE_UTF8_STRING +SDL_DYNX11FN_XCreateIC X11_XCreateIC = NULL; +SDL_DYNX11FN_XGetICValues X11_XGetICValues = NULL; +SDL_DYNX11FN_XSetICValues X11_XSetICValues = NULL; +SDL_DYNX11FN_XVaCreateNestedList X11_XVaCreateNestedList = NULL; +#endif + +/* These SDL_X11_HAVE_* flags are here whether you have dynamic X11 or not. */ +#define SDL_X11_MODULE(modname) int SDL_X11_HAVE_##modname = 0; +#include "SDL_x11sym.h" + +static int x11_load_refcount = 0; + +void SDL_X11_UnloadSymbols(void) +{ + // Don't actually unload if more than one module is using the libs... + if (x11_load_refcount > 0) { + if (--x11_load_refcount == 0) { +#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC + int i; +#endif + + // set all the function pointers to NULL. +#define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 0; +#define SDL_X11_SYM(rc, fn, params, args, ret) X11_##fn = NULL; +#include "SDL_x11sym.h" + +#ifdef X_HAVE_UTF8_STRING + X11_XCreateIC = NULL; + X11_XGetICValues = NULL; + X11_XSetICValues = NULL; + X11_XVaCreateNestedList = NULL; +#endif + +#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC + for (i = 0; i < SDL_arraysize(x11libs); i++) { + if (x11libs[i].lib) { + SDL_UnloadObject(x11libs[i].lib); + x11libs[i].lib = NULL; + } + } +#endif + } + } +} + +// returns non-zero if all needed symbols were loaded. +bool SDL_X11_LoadSymbols(void) +{ + bool result = true; // always succeed if not using Dynamic X11 stuff. + + // deal with multiple modules (dga, x11, etc) needing these symbols... + if (x11_load_refcount++ == 0) { +#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC + int i; + int *thismod = NULL; + for (i = 0; i < SDL_arraysize(x11libs); i++) { + if (x11libs[i].libname) { + x11libs[i].lib = SDL_LoadObject(x11libs[i].libname); + } + } + +#define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 1; // default yes +#include "SDL_x11sym.h" + +#define SDL_X11_MODULE(modname) thismod = &SDL_X11_HAVE_##modname; +#define SDL_X11_SYM(a, fn, x, y, z) X11_##fn = (SDL_DYNX11FN_##fn)X11_GetSym(#fn, thismod); +#include "SDL_x11sym.h" + +#ifdef X_HAVE_UTF8_STRING + X11_XCreateIC = (SDL_DYNX11FN_XCreateIC) + X11_GetSym("XCreateIC", &SDL_X11_HAVE_UTF8); + X11_XGetICValues = (SDL_DYNX11FN_XGetICValues) + X11_GetSym("XGetICValues", &SDL_X11_HAVE_UTF8); + X11_XSetICValues = (SDL_DYNX11FN_XSetICValues) + X11_GetSym("XSetICValues", &SDL_X11_HAVE_UTF8); + X11_XVaCreateNestedList = (SDL_DYNX11FN_XVaCreateNestedList) + X11_GetSym("XVaCreateNestedList", &SDL_X11_HAVE_UTF8); +#endif + + if (SDL_X11_HAVE_BASEXLIB) { + // all required symbols loaded. + SDL_ClearError(); + } else { + // in case something got loaded... + SDL_X11_UnloadSymbols(); + result = false; + } + +#else // no dynamic X11 + +#define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 1; // default yes +#define SDL_X11_SYM(a, fn, x, y, z) X11_##fn = (SDL_DYNX11FN_##fn)fn; +#include "SDL_x11sym.h" + +#ifdef X_HAVE_UTF8_STRING + X11_XCreateIC = XCreateIC; + X11_XGetICValues = XGetICValues; + X11_XSetICValues = XSetICValues; + X11_XVaCreateNestedList = XVaCreateNestedList; +#endif +#endif + } + + return result; +} + +#endif // SDL_VIDEO_DRIVER_X11 -- cgit v1.2.3