/* * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * error code definitions */ #ifndef AVUTIL_ERROR_H #define AVUTIL_ERROR_H #include <errno.h> #include "avutil.h" /* error handling */ #if EDOM > 0 #define AVERROR(e) (-(e)) ///< Returns a negative error code from a POSIX error code, to return from library functions. #define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value. #else /* Some platforms have E* and errno already negated. */ #define AVERROR(e) (e) #define AVUNERROR(e) (e) #endif #if LIBAVUTIL_VERSION_MAJOR < 51 #define AVERROR_INVALIDDATA AVERROR(EINVAL) ///< Invalid data found when processing input #define AVERROR_IO AVERROR(EIO) ///< I/O error #define AVERROR_NOENT AVERROR(ENOENT) ///< No such file or directory #define AVERROR_NOFMT AVERROR(EILSEQ) ///< Unknown format #define AVERROR_NOMEM AVERROR(ENOMEM) ///< Not enough memory #define AVERROR_NUMEXPECTED AVERROR(EDOM) ///< Number syntax expected in filename #define AVERROR_UNKNOWN AVERROR(EINVAL) ///< Unknown error #endif #define AVERROR_EOF AVERROR(EPIPE) ///< End of file #define AVERROR_NOTSUPP AVERROR(ENOSYS) ///< Operation not supported #define AVERROR_PATCHWELCOME (-MKTAG('P','A','W','E')) ///< Not yet implemented in FFmpeg, patches welcome #if LIBAVUTIL_VERSION_MAJOR > 50 #define AVERROR_INVALIDDATA (-MKTAG('I','N','D','A')) ///< Invalid data found when processing input #define AVERROR_NUMEXPECTED (-MKTAG('N','U','E','X')) ///< Number syntax expected in filename #endif /** * Puts a description of the AVERROR code errnum in errbuf. * In case of failure the global variable errno is set to indicate the * error. * * @param errbuf_size the size in bytes of errbuf * @return 0 on success, a negative value otherwise */ int av_strerror(int errnum, char *errbuf, size_t errbuf_size); #endif /* AVUTIL_ERROR_H */