00001 /* 00002 * This file is part of FFmpeg. 00003 * 00004 * FFmpeg is free software; you can redistribute it and/or 00005 * modify it under the terms of the GNU Lesser General Public 00006 * License as published by the Free Software Foundation; either 00007 * version 2.1 of the License, or (at your option) any later version. 00008 * 00009 * FFmpeg is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 * Lesser General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU Lesser General Public 00015 * License along with FFmpeg; if not, write to the Free Software 00016 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00017 */ 00018 00019 #undef _GNU_SOURCE 00020 #include "avutil.h" 00021 #include "avstring.h" 00022 00023 int av_strerror(int errnum, char *errbuf, size_t errbuf_size) 00024 { 00025 int ret = 0; 00026 const char *errstr = NULL; 00027 00028 switch (errnum) { 00029 case AVERROR_BSF_NOT_FOUND: errstr = "Bitstream filter not found" ; break; 00030 case AVERROR_BUG2: 00031 case AVERROR_BUG: errstr = "Internal bug, should not have happened" ; break; 00032 case AVERROR_DECODER_NOT_FOUND: errstr = "Decoder not found" ; break; 00033 case AVERROR_DEMUXER_NOT_FOUND: errstr = "Demuxer not found" ; break; 00034 case AVERROR_ENCODER_NOT_FOUND: errstr = "Encoder not found" ; break; 00035 case AVERROR_EOF: errstr = "End of file" ; break; 00036 case AVERROR_EXIT: errstr = "Immediate exit requested" ; break; 00037 case AVERROR_FILTER_NOT_FOUND: errstr = "Filter not found" ; break; 00038 case AVERROR_INVALIDDATA: errstr = "Invalid data found when processing input" ; break; 00039 case AVERROR_MUXER_NOT_FOUND: errstr = "Muxer not found" ; break; 00040 case AVERROR_OPTION_NOT_FOUND: errstr = "Option not found" ; break; 00041 case AVERROR_PATCHWELCOME: errstr = "Not yet implemented in FFmpeg, patches welcome"; break; 00042 case AVERROR_PROTOCOL_NOT_FOUND:errstr = "Protocol not found" ; break; 00043 case AVERROR_STREAM_NOT_FOUND: errstr = "Stream not found" ; break; 00044 case AVERROR_UNKNOWN: errstr = "Unknown error occurred" ; break; 00045 } 00046 00047 if (errstr) { 00048 av_strlcpy(errbuf, errstr, errbuf_size); 00049 } else { 00050 #if HAVE_STRERROR_R 00051 ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size); 00052 #else 00053 ret = -1; 00054 #endif 00055 if (ret < 0) 00056 snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum); 00057 } 00058 00059 return ret; 00060 }