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/*
* Mesa 3-D graphics library
* Version: 7.8
*
* Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <dlfcn.h>
#include "pipe/p_compiler.h"
#include "util/u_memory.h"
#include "egllog.h"
#include "EGL/egl.h" /* for EGL_api_BIT */
#include "egl_st.h"
#ifndef HAVE_DLADDR
#define HAVE_DLADDR 1
#endif
#if HAVE_DLADDR
static const char *
egl_g3d_st_names[] = {
#define ST_PUBLIC(name, ...) #name,
#include "st_public_tmp.h"
NULL
};
static boolean
egl_g3d_fill_st(struct egl_g3d_st *stapi, void *sym)
{
st_proc *procs = (st_proc *) stapi;
void *handle;
Dl_info info;
const char **name;
if (!dladdr(sym, &info))
return FALSE;
handle = dlopen(info.dli_fname, RTLD_LAZY | RTLD_LOCAL | RTLD_NODELETE);
if (!handle)
return FALSE;
for (name = egl_g3d_st_names; *name; name++) {
st_proc proc = (st_proc) dlsym(handle, *name);
if (!proc) {
_eglLog(_EGL_WARNING, "%s is missing in %s", *name, info.dli_fname);
memset(stapi, 0, sizeof(*stapi));
dlclose(handle);
return FALSE;
}
*procs++ = proc;
}
dlclose(handle);
return TRUE;
}
#else /* HAVE_DLADDR */
static boolean
egl_g3d_fill_st(struct egl_g3d_st *stapi, void *sym)
{
#define ST_PUBLIC(name, ...) stapi->name = name;
#include "st_public_tmp.h"
return TRUE;
}
#endif /* HAVE_DLADDR */
static boolean
egl_g3d_init_st(struct egl_g3d_st *stapi, const char *api)
{
void *handle, *sym;
boolean res = FALSE;
/* already initialized */
if (stapi->st_notify_swapbuffers != NULL)
return TRUE;
handle = dlopen(NULL, RTLD_LAZY | RTLD_LOCAL);
if (!handle)
return FALSE;
sym = dlsym(handle, api);
if (sym && egl_g3d_fill_st(stapi, sym))
res = TRUE;
dlclose(handle);
return res;
}
static struct {
const char *symbol;
EGLint api_bit;
} egl_g3d_st_info[NUM_EGL_G3D_STS] = {
{ "st_api_OpenGL_ES1", EGL_OPENGL_ES_BIT },
{ "st_api_OpenVG", EGL_OPENVG_BIT },
{ "st_api_OpenGL_ES2", EGL_OPENGL_ES2_BIT },
{ "st_api_OpenGL", EGL_OPENGL_BIT },
};
const struct egl_g3d_st *
egl_g3d_get_st(enum egl_g3d_st_api api)
{
static struct egl_g3d_st all_trackers[NUM_EGL_G3D_STS];
if (egl_g3d_init_st(&all_trackers[api], egl_g3d_st_info[api].symbol)) {
all_trackers[api].api_bit = egl_g3d_st_info[api].api_bit;
return &all_trackers[api];
}
else {
return NULL;
}
}
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