SDL_waylanddyn.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
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"
#if SDL_VIDEO_DRIVER_WAYLAND
#define DEBUG_DYNAMIC_WAYLAND 0
#include "SDL_waylanddyn.h"
#if DEBUG_DYNAMIC_WAYLAND
#include "SDL_log.h"
#endif
#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
#include "SDL_name.h"
#include "SDL_loadso.h"
typedef struct
{
void *lib;
const char *libname;
} waylanddynlib;
#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
#define SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC NULL
#endif
#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL
#define SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL NULL
#endif
#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR
#define SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR NULL
#endif
#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON
#define SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON NULL
#endif
static waylanddynlib waylandlibs[] = {
{NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC},
{NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL},
{NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR},
{NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON}
};
static void *
WAYLAND_GetSym(const char *fnname, int *pHasModule)
{
int i;
void *fn = NULL;
for (i = 0; i < SDL_TABLESIZE(waylandlibs); i++) {
if (waylandlibs[i].lib != NULL) {
fn = SDL_LoadFunction(waylandlibs[i].lib, fnname);
if (fn != NULL)
break;
}
}
#if DEBUG_DYNAMIC_WAYLAND
if (fn != NULL)
SDL_Log("WAYLAND: Found '%s' in %s (%p)\n", fnname, waylandlibs[i].libname, fn);
else
SDL_Log("WAYLAND: Symbol '%s' NOT FOUND!\n", fnname);
#endif
if (fn == NULL)
*pHasModule = 0; /* kill this module. */
return fn;
}
#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_INTERFACE(iface) const struct wl_interface *WAYLAND_##iface = NULL;
#include "SDL_waylandsym.h"
#undef SDL_WAYLAND_MODULE
#undef SDL_WAYLAND_SYM
#undef SDL_WAYLAND_INTERFACE
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_INTERFACE(iface) WAYLAND_##iface = NULL;
#include "SDL_waylandsym.h"
#undef SDL_WAYLAND_MODULE
#undef SDL_WAYLAND_SYM
#undef SDL_WAYLAND_INTERFACE
#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
for (i = 0; i < SDL_TABLESIZE(waylandlibs); i++) {
if (waylandlibs[i].lib != NULL) {
SDL_UnloadObject(waylandlibs[i].lib);
waylandlibs[i].lib = NULL;
}
}
#endif
}
}
}
/* returns non-zero if all needed symbols were loaded. */
int
SDL_WAYLAND_LoadSymbols(void)
{
int rc = 1; /* 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_TABLESIZE(waylandlibs); i++) {
if (waylandlibs[i].libname != NULL) {
waylandlibs[i].lib = SDL_LoadObject(waylandlibs[i].libname);
}
}
#define SDL_WAYLAND_MODULE(modname) SDL_WAYLAND_HAVE_##modname = 1; /* default yes */
#define SDL_WAYLAND_SYM(rc,fn,params)
#define SDL_WAYLAND_INTERFACE(iface)
#include "SDL_waylandsym.h"
#undef SDL_WAYLAND_MODULE
#undef SDL_WAYLAND_SYM
#undef SDL_WAYLAND_INTERFACE
#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);
#define SDL_WAYLAND_INTERFACE(iface) WAYLAND_##iface = (struct wl_interface *) WAYLAND_GetSym(#iface,thismod);
#include "SDL_waylandsym.h"
#undef SDL_WAYLAND_MODULE
#undef SDL_WAYLAND_SYM
#undef SDL_WAYLAND_INTERFACE
if (SDL_WAYLAND_HAVE_WAYLAND_CLIENT) {
/* all required symbols loaded. */
SDL_ClearError();
} else {
/* in case something got loaded... */
SDL_WAYLAND_UnloadSymbols();
rc = 0;
}
#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_INTERFACE(iface) WAYLAND_##iface = &iface;
#include "SDL_waylandsym.h"
#undef SDL_WAYLAND_MODULE
#undef SDL_WAYLAND_SYM
#undef SDL_WAYLAND_INTERFACE
#endif
}
return rc;
}
#endif /* SDL_VIDEO_DRIVER_WAYLAND */
/* vi: set ts=4 sw=4 expandtab: */
SDL_ClearError
#define SDL_ClearError
Definition: SDL_dynapi_overrides.h:120
SDL_WAYLAND_UnloadSymbols
void SDL_WAYLAND_UnloadSymbols(void)
SDL_log.h
SDL_name.h
SDL_LoadObject
#define SDL_LoadObject
Definition: SDL_dynapi_overrides.h:238
SDL_UnloadObject
#define SDL_UnloadObject
Definition: SDL_dynapi_overrides.h:240
SDL_Log
#define SDL_Log
Definition: SDL_dynapi_overrides.h:37
SDL_waylandsym.h
SDL_WAYLAND_LoadSymbols
int SDL_WAYLAND_LoadSymbols(void)
SDL_TABLESIZE
#define SDL_TABLESIZE(table)
Definition: SDL_stdinc.h:94
SDL_waylanddyn.h
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
NULL
#define NULL
Definition: begin_code.h:143
SDL_loadso.h
SDL_LoadFunction
void * SDL_LoadFunction(void *handle, const char *name)