mirror of https://github.com/mpv-player/mpv
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
|
|
* This file is part of mpv.
|
|
*
|
|
* mpv is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* mpv is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "cuda_dynamic.h"
|
|
|
|
#include <pthread.h>
|
|
|
|
#if defined(_WIN32)
|
|
# include <windows.h>
|
|
# define dlopen(filename, flags) LoadLibrary(TEXT(filename))
|
|
# define dlsym(handle, symbol) (void *)GetProcAddress(handle, symbol)
|
|
# define dlclose(handle) FreeLibrary(handle)
|
|
#else
|
|
# include <dlfcn.h>
|
|
#endif
|
|
|
|
#if defined(_WIN32) || defined(__CYGWIN__)
|
|
# define CUDA_LIBNAME "nvcuda.dll"
|
|
#else
|
|
# define CUDA_LIBNAME "libcuda.so.1"
|
|
#endif
|
|
|
|
#define CUDA_DECL(NAME, TYPE) \
|
|
TYPE *mpv_ ## NAME;
|
|
CUDA_FNS(CUDA_DECL)
|
|
|
|
static bool cuda_loaded = false;
|
|
static pthread_once_t cuda_load_once = PTHREAD_ONCE_INIT;
|
|
|
|
static void cuda_do_load(void)
|
|
{
|
|
void *lib = dlopen(CUDA_LIBNAME, RTLD_LAZY);
|
|
if (!lib) {
|
|
return;
|
|
}
|
|
|
|
#define CUDA_LOAD_SYMBOL(NAME, TYPE) \
|
|
mpv_ ## NAME = dlsym(lib, #NAME); if (!mpv_ ## NAME) return;
|
|
|
|
CUDA_FNS(CUDA_LOAD_SYMBOL)
|
|
|
|
cuda_loaded = true;
|
|
}
|
|
|
|
bool cuda_load(void)
|
|
{
|
|
pthread_once(&cuda_load_once, cuda_do_load);
|
|
return cuda_loaded;
|
|
}
|