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100 lines
3.7 KiB
100 lines
3.7 KiB
/* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#undef _GNU_SOURCE |
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#define _XOPEN_SOURCE 600 /* XSI-compliant version of strerror_r */ |
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#include "avutil.h" |
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#include "avstring.h" |
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#include "common.h" |
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struct error_entry { |
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int num; |
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const char *tag; |
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const char *str; |
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}; |
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#define ERROR_TAG(tag) AVERROR_##tag, #tag |
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static const struct error_entry error_entries[] = { |
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{ ERROR_TAG(BSF_NOT_FOUND), "Bitstream filter not found" }, |
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{ ERROR_TAG(BUG), "Internal bug, should not have happened" }, |
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{ ERROR_TAG(BUG2), "Internal bug, should not have happened" }, |
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{ ERROR_TAG(BUFFER_TOO_SMALL), "Buffer too small" }, |
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{ ERROR_TAG(DECODER_NOT_FOUND), "Decoder not found" }, |
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{ ERROR_TAG(DEMUXER_NOT_FOUND), "Demuxer not found" }, |
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{ ERROR_TAG(ENCODER_NOT_FOUND), "Encoder not found" }, |
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{ ERROR_TAG(EOF), "End of file" }, |
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{ ERROR_TAG(EXIT), "Immediate exit requested" }, |
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{ ERROR_TAG(EXTERNAL), "Generic error in an external library" }, |
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{ ERROR_TAG(FILTER_NOT_FOUND), "Filter not found" }, |
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{ ERROR_TAG(INVALIDDATA), "Invalid data found when processing input" }, |
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{ ERROR_TAG(MUXER_NOT_FOUND), "Muxer not found" }, |
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{ ERROR_TAG(OPTION_NOT_FOUND), "Option not found" }, |
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{ ERROR_TAG(PATCHWELCOME), "Not yet implemented in FFmpeg, patches welcome" }, |
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{ ERROR_TAG(PROTOCOL_NOT_FOUND), "Protocol not found" }, |
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{ ERROR_TAG(STREAM_NOT_FOUND), "Stream not found" }, |
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{ ERROR_TAG(UNKNOWN), "Unknown error occurred" }, |
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{ ERROR_TAG(EXPERIMENTAL), "Experimental feature" }, |
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}; |
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int av_strerror(int errnum, char *errbuf, size_t errbuf_size) |
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{ |
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int ret = 0, i; |
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const struct error_entry *entry = NULL; |
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for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) { |
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if (errnum == error_entries[i].num) { |
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entry = &error_entries[i]; |
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break; |
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} |
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} |
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if (entry) { |
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av_strlcpy(errbuf, entry->str, errbuf_size); |
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} else { |
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#if HAVE_STRERROR_R |
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ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size)); |
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#else |
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ret = -1; |
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#endif |
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if (ret < 0) |
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snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum); |
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} |
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return ret; |
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} |
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#ifdef TEST |
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#undef printf |
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int main(void) |
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{ |
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int i; |
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for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) { |
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const struct error_entry *entry = &error_entries[i]; |
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printf("%d: %s [%s]\n", entry->num, av_err2str(entry->num), entry->tag); |
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} |
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for (i = 0; i < 256; i++) { |
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printf("%d: %s\n", -i, av_err2str(-i)); |
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} |
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return 0; |
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} |
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#endif /* TEST */
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