1 /* 2 * This file is part of Libav. 3 * 4 * Libav 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 * Libav 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 Libav; 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 <stddef.h> 29 #include "avutil.h" 30 31 /** 32 * @addtogroup lavu_error 33 * 34 * @{ 35 */ 36 37 38 /* error handling */ 39 #if EDOM > 0 40 #define AVERROR(e) (-(e)) ///< Returns a negative error code from a POSIX error code, to return from library functions. 41 #define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value. 42 #else 43 /* Some platforms have E* and errno already negated. */ 44 #define AVERROR(e) (e) 45 #define AVUNERROR(e) (e) 46 #endif 47 48 #define AVERROR_BSF_NOT_FOUND (-0x39acbd08) ///< Bitstream filter not found 49 #define AVERROR_DECODER_NOT_FOUND (-0x3cbabb08) ///< Decoder not found 50 #define AVERROR_DEMUXER_NOT_FOUND (-0x32babb08) ///< Demuxer not found 51 #define AVERROR_ENCODER_NOT_FOUND (-0x3cb1ba08) ///< Encoder not found 52 #define AVERROR_EOF (-0x5fb9b0bb) ///< End of file 53 #define AVERROR_EXIT (-0x2bb6a7bb) ///< Immediate exit was requested; the called function should not be restarted 54 #define AVERROR_FILTER_NOT_FOUND (-0x33b6b908) ///< Filter not found 55 #define AVERROR_INVALIDDATA (-0x3ebbb1b7) ///< Invalid data found when processing input 56 #define AVERROR_MUXER_NOT_FOUND (-0x27aab208) ///< Muxer not found 57 #define AVERROR_OPTION_NOT_FOUND (-0x2bafb008) ///< Option not found 58 #define AVERROR_PATCHWELCOME (-0x3aa8beb0) ///< Not yet implemented in Libav, patches welcome 59 #define AVERROR_PROTOCOL_NOT_FOUND (-0x30adaf08) ///< Protocol not found 60 #define AVERROR_STREAM_NOT_FOUND (-0x2dabac08) ///< Stream not found 61 #define AVERROR_BUG (-0x5fb8aabe) ///< Bug detected, please report the issue 62 #define AVERROR_UNKNOWN (-0x31b4b1ab) ///< Unknown error, typically from an external library 63 #define AVERROR_EXPERIMENTAL (-0x2bb2afa8) ///< Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it. 64 65 /** 66 * Put a description of the AVERROR code errnum in errbuf. 67 * In case of failure the global variable errno is set to indicate the 68 * error. Even in case of failure av_strerror() will print a generic 69 * error message indicating the errnum provided to errbuf. 70 * 71 * @param errnum error code to describe 72 * @param errbuf buffer to which description is written 73 * @param errbuf_size the size in bytes of errbuf 74 * @return 0 on success, a negative value if a description for errnum 75 * cannot be found 76 */ 77 int av_strerror(int errnum, char *errbuf, size_t errbuf_size); 78 79 /** 80 * @} 81 */ 82 83 #endif /* AVUTIL_ERROR_H */ 84