ffmpeg/libavutil/wchar_filename.h

   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 */