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 /**

20 * @file

21 * error code definitions

22 */

23

24 #ifndef AVUTIL_ERROR_H

25 #define AVUTIL_ERROR_H

26

27 #include <errno.h>

28 #include "common.h"

29

30 /* error handling */

31 #if EDOM > 0

32 #define AVERROR(e) (-(e)) ///< Returns a negative error code from a POSIX error code, to return from library functions.

33 #define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value.

34 #else

35 /* Some platforms have E* and errno already negated. */

36 #define AVERROR(e) (e)

37 #define AVUNERROR(e) (e)

38 #endif

39

40 #define AVERROR_EOF AVERROR(EPIPE) ///< End of file

41

42

43 /**

44 * Puts a description of the AVERROR code errnum in errbuf.

45 * In case of failure the global variable errno is set to indicate the

46 * error.

47 *

48 * @param errbuf_size the size in bytes of errbuf

49 * @return 0 on success, a negative value otherwise

50 */

51 int av_strerror(int errnum, char *errbuf, size_t errbuf_size);

52

53 #endif /* AVUTIL_ERROR_H */