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 --- .../SDL-3.2.8/src/video/wayland/SDL_waylanddyn.c | 176 +++++++++++++++++++++ 1 file changed, 176 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/video/wayland/SDL_waylanddyn.c (limited to 'contrib/SDL-3.2.8/src/video/wayland/SDL_waylanddyn.c') diff --git a/contrib/SDL-3.2.8/src/video/wayland/SDL_waylanddyn.c b/contrib/SDL-3.2.8/src/video/wayland/SDL_waylanddyn.c new file mode 100644 index 0000000..7d6d42f --- /dev/null +++ b/contrib/SDL-3.2.8/src/video/wayland/SDL_waylanddyn.c @@ -0,0 +1,176 @@ +/* + 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_WAYLAND + +#define DEBUG_DYNAMIC_WAYLAND 0 + +#include "SDL_waylanddyn.h" + +#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC + +typedef struct +{ + SDL_SharedObject *lib; + const char *libname; +} waylanddynlib; + +static waylanddynlib waylandlibs[] = { + { NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC }, +#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL + { NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL }, +#endif +#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR + { NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR }, +#endif +#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON + { NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON }, +#endif +#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_LIBDECOR + { NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_LIBDECOR }, +#endif + { NULL, NULL } +}; + +static void *WAYLAND_GetSym(const char *fnname, int *pHasModule, bool required) +{ + void *fn = NULL; + waylanddynlib *dynlib; + for (dynlib = waylandlibs; dynlib->libname; dynlib++) { + if (dynlib->lib) { + fn = SDL_LoadFunction(dynlib->lib, fnname); + if (fn) { + break; + } + } + } + +#if DEBUG_DYNAMIC_WAYLAND + if (fn) { + SDL_Log("WAYLAND: Found '%s' in %s (%p)", fnname, dynlib->libname, fn); + } else { + SDL_Log("WAYLAND: Symbol '%s' NOT FOUND!", fnname); + } +#endif + + if (!fn && required) { + *pHasModule = 0; // kill this module. + } + + return fn; +} + +#else + +#include + +#endif // SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC + +// Define all the function pointers and wrappers... +#define SDL_WAYLAND_MODULE(modname) int SDL_WAYLAND_HAVE_##modname = 0; +#define SDL_WAYLAND_SYM(rc, fn, params) SDL_DYNWAYLANDFN_##fn WAYLAND_##fn = NULL; +#define SDL_WAYLAND_SYM_OPT(rc, fn, params) SDL_DYNWAYLANDFN_##fn WAYLAND_##fn = NULL; +#define SDL_WAYLAND_INTERFACE(iface) const struct wl_interface *WAYLAND_##iface = NULL; +#include "SDL_waylandsym.h" + +static int wayland_load_refcount = 0; + +void SDL_WAYLAND_UnloadSymbols(void) +{ + // Don't actually unload if more than one module is using the libs... + if (wayland_load_refcount > 0) { + if (--wayland_load_refcount == 0) { +#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC + int i; +#endif + + // set all the function pointers to NULL. +#define SDL_WAYLAND_MODULE(modname) SDL_WAYLAND_HAVE_##modname = 0; +#define SDL_WAYLAND_SYM(rc, fn, params) WAYLAND_##fn = NULL; +#define SDL_WAYLAND_SYM_OPT(rc, fn, params) WAYLAND_##fn = NULL; +#define SDL_WAYLAND_INTERFACE(iface) WAYLAND_##iface = NULL; +#include "SDL_waylandsym.h" + +#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC + for (i = 0; i < SDL_arraysize(waylandlibs); i++) { + if (waylandlibs[i].lib) { + SDL_UnloadObject(waylandlibs[i].lib); + waylandlibs[i].lib = NULL; + } + } +#endif + } + } +} + +// returns non-zero if all needed symbols were loaded. +bool SDL_WAYLAND_LoadSymbols(void) +{ + bool result = true; // always succeed if not using Dynamic WAYLAND stuff. + + // deal with multiple modules (dga, wayland, etc) needing these symbols... + if (wayland_load_refcount++ == 0) { +#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC + int i; + int *thismod = NULL; + for (i = 0; i < SDL_arraysize(waylandlibs); i++) { + if (waylandlibs[i].libname) { + waylandlibs[i].lib = SDL_LoadObject(waylandlibs[i].libname); + } + } + +#define SDL_WAYLAND_MODULE(modname) SDL_WAYLAND_HAVE_##modname = 1; // default yes +#include "SDL_waylandsym.h" + +#define SDL_WAYLAND_MODULE(modname) thismod = &SDL_WAYLAND_HAVE_##modname; +#define SDL_WAYLAND_SYM(rc, fn, params) WAYLAND_##fn = (SDL_DYNWAYLANDFN_##fn)WAYLAND_GetSym(#fn, thismod, true); +#define SDL_WAYLAND_SYM_OPT(rc, fn, params) WAYLAND_##fn = (SDL_DYNWAYLANDFN_##fn)WAYLAND_GetSym(#fn, thismod, false); +#define SDL_WAYLAND_INTERFACE(iface) WAYLAND_##iface = (struct wl_interface *)WAYLAND_GetSym(#iface, thismod, true); +#include "SDL_waylandsym.h" + + if (SDL_WAYLAND_HAVE_WAYLAND_CLIENT && + SDL_WAYLAND_HAVE_WAYLAND_CURSOR && + SDL_WAYLAND_HAVE_WAYLAND_EGL && + SDL_WAYLAND_HAVE_WAYLAND_XKB) { + // All required symbols loaded, only libdecor is optional. + SDL_ClearError(); + } else { + // in case something got loaded... + SDL_WAYLAND_UnloadSymbols(); + result = false; + } + +#else // no dynamic WAYLAND + +#define SDL_WAYLAND_MODULE(modname) SDL_WAYLAND_HAVE_##modname = 1; // default yes +#define SDL_WAYLAND_SYM(rc, fn, params) WAYLAND_##fn = fn; +#define SDL_WAYLAND_SYM_OPT(rc, fn, params) WAYLAND_##fn = fn; +#define SDL_WAYLAND_INTERFACE(iface) WAYLAND_##iface = &iface; +#include "SDL_waylandsym.h" + +#endif + } + + return result; +} + +#endif // SDL_VIDEO_DRIVER_WAYLAND -- cgit v1.2.3