libavutil/error.c

   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 #include "avutil.h"
  20 #include "avstring.h"
  21 #include "common.h"
  22
  23 int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
  24 {
  25     int ret = 0;
  26     const char *errstr = NULL;
  27
  28     switch (errnum) {
  29     case AVERROR_BSF_NOT_FOUND:     errstr = "Bitstream filter not found"                   ; break;
  30     case AVERROR_DECODER_NOT_FOUND: errstr = "Decoder not found"                            ; break;
  31     case AVERROR_DEMUXER_NOT_FOUND: errstr = "Demuxer not found"                            ; break;
  32     case AVERROR_ENCODER_NOT_FOUND: errstr = "Encoder not found"                            ; break;
  33     case AVERROR_EOF:               errstr = "End of file"                                  ; break;
  34     case AVERROR_EXIT:              errstr = "Immediate exit requested"                     ; break;
  35     case AVERROR_FILTER_NOT_FOUND:  errstr = "Filter not found"                             ; break;
  36     case AVERROR_INVALIDDATA:       errstr = "Invalid data found when processing input"     ; break;
  37     case AVERROR_MUXER_NOT_FOUND:   errstr = "Muxer not found"                              ; break;
  38     case AVERROR_OPTION_NOT_FOUND:  errstr = "Option not found"                             ; break;
  39     case AVERROR_PATCHWELCOME:      errstr = "Not yet implemented in Libav, patches welcome"; break;
  40     case AVERROR_PROTOCOL_NOT_FOUND:errstr = "Protocol not found"                           ; break;
  41     case AVERROR_STREAM_NOT_FOUND:  errstr = "Stream not found"                             ; break;
  42     case AVERROR_BUG:               errstr = "Bug detected, please report the issue"        ; break;
  43     case AVERROR_UNKNOWN:           errstr = "Unknown error occurred"                       ; break;
  44     case AVERROR_EXPERIMENTAL:      errstr = "Experimental feature"                         ; break;
  45     }
  46
  47     if (errstr) {
  48         av_strlcpy(errbuf, errstr, errbuf_size);
  49     } else {
  50 #if HAVE_STRERROR_R
  51         ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size);
  52 #else
  53         ret = -1;
  54 #endif
  55         if (ret < 0)
  56             snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
  57     }
  58
  59     return ret;
  60 }