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 */