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wchar_filename.h
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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 */