yading@11: /*
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #undef _GNU_SOURCE
yading@11: #include "avutil.h"
yading@11: #include "avstring.h"
yading@11: #include "common.h"
yading@11: 
yading@11: struct error_entry {
yading@11:     int num;
yading@11:     const char *tag;
yading@11:     const char *str;
yading@11: };
yading@11: 
yading@11: #define ERROR_TAG(tag) AVERROR_##tag, #tag
yading@11: static const struct error_entry error_entries[] = {
yading@11:     { ERROR_TAG(BSF_NOT_FOUND),      "Bitstream filter not found"                     },
yading@11:     { ERROR_TAG(BUG),                "Internal bug, should not have happened"         },
yading@11:     { ERROR_TAG(BUG2),               "Internal bug, should not have happened"         },
yading@11:     { ERROR_TAG(BUFFER_TOO_SMALL),   "Buffer too small"                               },
yading@11:     { ERROR_TAG(DECODER_NOT_FOUND),  "Decoder not found"                              },
yading@11:     { ERROR_TAG(DEMUXER_NOT_FOUND),  "Demuxer not found"                              },
yading@11:     { ERROR_TAG(ENCODER_NOT_FOUND),  "Encoder not found"                              },
yading@11:     { ERROR_TAG(EOF),                "End of file"                                    },
yading@11:     { ERROR_TAG(EXIT),               "Immediate exit requested"                       },
yading@11:     { ERROR_TAG(EXTERNAL),           "Generic error in an external library"           },
yading@11:     { ERROR_TAG(FILTER_NOT_FOUND),   "Filter not found"                               },
yading@11:     { ERROR_TAG(INVALIDDATA),        "Invalid data found when processing input"       },
yading@11:     { ERROR_TAG(MUXER_NOT_FOUND),    "Muxer not found"                                },
yading@11:     { ERROR_TAG(OPTION_NOT_FOUND),   "Option not found"                               },
yading@11:     { ERROR_TAG(PATCHWELCOME),       "Not yet implemented in FFmpeg, patches welcome" },
yading@11:     { ERROR_TAG(PROTOCOL_NOT_FOUND), "Protocol not found"                             },
yading@11:     { ERROR_TAG(STREAM_NOT_FOUND),   "Stream not found"                               },
yading@11:     { ERROR_TAG(UNKNOWN),            "Unknown error occurred"                         },
yading@11:     { ERROR_TAG(EXPERIMENTAL),       "Experimental feature"                           },
yading@11: };
yading@11: 
yading@11: int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
yading@11: {
yading@11:     int ret = 0, i;
yading@11:     const struct error_entry *entry = NULL;
yading@11: 
yading@11:     for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
yading@11:         if (errnum == error_entries[i].num) {
yading@11:             entry = &error_entries[i];
yading@11:             break;
yading@11:         }
yading@11:     }
yading@11:     if (entry) {
yading@11:         av_strlcpy(errbuf, entry->str, errbuf_size);
yading@11:     } else {
yading@11: #if HAVE_STRERROR_R
yading@11:         ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
yading@11: #else
yading@11:         ret = -1;
yading@11: #endif
yading@11:         if (ret < 0)
yading@11:             snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
yading@11:     }
yading@11: 
yading@11:     return ret;
yading@11: }
yading@11: 
yading@11: #ifdef TEST
yading@11: 
yading@11: #undef printf
yading@11: 
yading@11: int main(void)
yading@11: {
yading@11:     int i;
yading@11: 
yading@11:     for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
yading@11:         const struct error_entry *entry = &error_entries[i];
yading@11:         printf("%d: %s [%s]\n", entry->num, av_err2str(entry->num), entry->tag);
yading@11:     }
yading@11: 
yading@11:     for (i = 0; i < 256; i++) {
yading@11:         printf("%d: %s\n", -i, av_err2str(-i));
yading@11:     }
yading@11: 
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: #endif /* TEST */