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win32_dlfcn: Support WinRT/UWP.

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This only enables dlls that are packaged with the application to be
loaded. Due to the limitations of WinRT/UWP it is not allowed to load
external/system dlls so this cannot be used as a complete replacement
for normal win32 dll loading.

Signed-off-by: Matt Oliver <protogonoi@gmail.com>
This commit is contained in:
Matt Oliver 2017-07-01 23:16:42 +10:00
parent 1e0c75ea16
commit a3833bee94
1 changed files with 11 additions and 1 deletions
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12
compat/w32dlfcn.h
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@ -21,7 +21,7 @@
#ifdef _WIN32 #ifdef _WIN32
#include <windows.h> #include <windows.h>
#if _WIN32_WINNT < 0x0602 #if (_WIN32_WINNT < 0x0602) || HAVE_WINRT
#include "libavutil/wchar_filename.h" #include "libavutil/wchar_filename.h"
#endif #endif
/** /**
@ -71,7 +71,17 @@ exit:
#ifndef LOAD_LIBRARY_SEARCH_SYSTEM32 #ifndef LOAD_LIBRARY_SEARCH_SYSTEM32
# define LOAD_LIBRARY_SEARCH_SYSTEM32 0x00000800 # define LOAD_LIBRARY_SEARCH_SYSTEM32 0x00000800
#endif #endif
#if HAVE_WINRT
wchar_t *name_w = NULL;
int ret;
if (utf8towchar(name, &name_w))
return NULL;
ret = LoadPackagedLibrary(name_w, 0);
av_free(name_w);
return ret;
#else
return LoadLibraryExA(name, NULL, LOAD_LIBRARY_SEARCH_APPLICATION_DIR | LOAD_LIBRARY_SEARCH_SYSTEM32); return LoadLibraryExA(name, NULL, LOAD_LIBRARY_SEARCH_APPLICATION_DIR | LOAD_LIBRARY_SEARCH_SYSTEM32);
#endif
} }
#define dlopen(name, flags) win32_dlopen(name) #define dlopen(name, flags) win32_dlopen(name)
#define dlclose FreeLibrary #define dlclose FreeLibrary