| /* |
| * 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_NOTSUPP AVERROR(ENOSYS) ///< Operation not supported |
| #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_PATCHWELCOME (-MKTAG('P','A','W','E')) ///< Not yet implemented in Libav, 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 |
| |
| #define AVERROR_DEMUXER_NOT_FOUND (-MKTAG(0xF8,'D','E','M')) ///< Demuxer not found |
| #define AVERROR_MUXER_NOT_FOUND (-MKTAG(0xF8,'M','U','X')) ///< Muxer not found |
| |
| #define AVERROR_BSF_NOT_FOUND (-MKTAG(0xF8,'B','S','F')) ///< Bitstream filter not found |
| #define AVERROR_DECODER_NOT_FOUND (-MKTAG(0xF8,'D','E','C')) ///< Decoder not found |
| #define AVERROR_DEMUXER_NOT_FOUND (-MKTAG(0xF8,'D','E','M')) ///< Demuxer not found |
| #define AVERROR_ENCODER_NOT_FOUND (-MKTAG(0xF8,'E','N','C')) ///< Encoder not found |
| #define AVERROR_EXIT (-MKTAG( 'E','X','I','T')) ///< Immediate exit was requested; the called function should not be restarted |
| #define AVERROR_FILTER_NOT_FOUND (-MKTAG(0xF8,'F','I','L')) ///< Filter not found |
| #define AVERROR_MUXER_NOT_FOUND (-MKTAG(0xF8,'M','U','X')) ///< Muxer not found |
| #define AVERROR_OPTION_NOT_FOUND (-MKTAG(0xF8,'O','P','T')) ///< Option not found |
| #define AVERROR_PROTOCOL_NOT_FOUND (-MKTAG(0xF8,'P','R','O')) ///< Protocol not found |
| #define AVERROR_STREAM_NOT_FOUND (-MKTAG(0xF8,'S','T','R')) ///< Stream not found |
| |
| /** |
| * Put a description of the AVERROR code errnum in errbuf. |
| * In case of failure the global variable errno is set to indicate the |
| * error. Even in case of failure av_strerror() will print a generic |
| * error message indicating the errnum provided to errbuf. |
| * |
| * @param errnum error code to describe |
| * @param errbuf buffer to which description is written |
| * @param errbuf_size the size in bytes of errbuf |
| * @return 0 on success, a negative value if a description for errnum |
| * cannot be found |
| */ |
| int av_strerror(int errnum, char *errbuf, size_t errbuf_size); |
| |
| #endif /* AVUTIL_ERROR_H */ |