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  1. /*
  2.  * This file is part of FFmpeg.
  3.  *
  4.  * FFmpeg is free software; you can redistribute it and/or
  5.  * modify it under the terms of the GNU Lesser General Public
  6.  * License as published by the Free Software Foundation; either
  7.  * version 2.1 of the License, or (at your option) any later version.
  8.  *
  9.  * FFmpeg is distributed in the hope that it will be useful,
  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12.  * Lesser General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Lesser General Public
  15.  * License along with FFmpeg; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. #ifndef AVUTIL_WCHAR_FILENAME_H
  20. #define AVUTIL_WCHAR_FILENAME_H
  21.  
  22. #if defined(_WIN32) && !defined(__MINGW32CE__)
  23. #include <windows.h>
  24. #include "mem.h"
  25.  
  26. static inline int utf8towchar(const char *filename_utf8, wchar_t **filename_w)
  27. {
  28.     int num_chars;
  29.     num_chars = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, filename_utf8, -1, NULL, 0);
  30.     if (num_chars <= 0) {
  31.         *filename_w = NULL;
  32.         return 0;
  33.     }
  34.     *filename_w = (wchar_t *)av_mallocz_array(num_chars, sizeof(wchar_t));
  35.     if (!*filename_w) {
  36.         errno = ENOMEM;
  37.         return -1;
  38.     }
  39.     MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, *filename_w, num_chars);
  40.     return 0;
  41. }
  42. #endif
  43.  
  44. #endif /* AVUTIL_WCHAR_FILENAME_H */
  45.