2 * This file is part of FFmpeg.
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.
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.
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
21 * error code definitions
24 #ifndef AVUTIL_ERROR_H
25 #define AVUTIL_ERROR_H
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.
35 /* Some platforms have E* and errno already negated. */
36 #define AVERROR(e) (e)
37 #define AVUNERROR(e) (e)
40 #if LIBAVUTIL_VERSION_MAJOR < 51
41 #define AVERROR_INVALIDDATA AVERROR(EINVAL) ///< Invalid data found when processing input
42 #define AVERROR_IO AVERROR(EIO) ///< I/O error
43 #define AVERROR_NOENT AVERROR(ENOENT) ///< No such file or directory
44 #define AVERROR_NOFMT AVERROR(EILSEQ) ///< Unknown format
45 #define AVERROR_NOMEM AVERROR(ENOMEM) ///< Not enough memory
46 #define AVERROR_NOTSUPP AVERROR(ENOSYS) ///< Operation not supported
47 #define AVERROR_NUMEXPECTED AVERROR(EDOM) ///< Number syntax expected in filename
48 #define AVERROR_UNKNOWN AVERROR(EINVAL) ///< Unknown error
51 #define AVERROR_EOF AVERROR(EPIPE) ///< End of file
53 #define AVERROR_PATCHWELCOME (-MKTAG('P','A','W','E')) ///< Not yet implemented in FFmpeg, patches welcome
55 #if LIBAVUTIL_VERSION_MAJOR > 50
56 #define AVERROR_INVALIDDATA (-MKTAG('I','N','D','A')) ///< Invalid data found when processing input
57 #define AVERROR_NUMEXPECTED (-MKTAG('N','U','E','X')) ///< Number syntax expected in filename
61 * Put a description of the AVERROR code errnum in errbuf.
62 * In case of failure the global variable errno is set to indicate the
63 * error. Even in case of failure av_strerror() will print a generic
64 * error message indicating the errnum provided to errbuf.
66 * @param errnum error code to describe
67 * @param errbuf buffer to which description is written
68 * @param errbuf_size the size in bytes of errbuf
69 * @return 0 on success, a negative value if a description for errnum
72 int av_strerror(int errnum, char *errbuf, size_t errbuf_size);
74 #endif /* AVUTIL_ERROR_H */