Libav
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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 #include "avutil.h" 00020 #include "avstring.h" 00021 00022 int av_strerror(int errnum, char *errbuf, size_t errbuf_size) 00023 { 00024 int ret = 0; 00025 const char *errstr = NULL; 00026 00027 switch (errnum) { 00028 case AVERROR_EOF: errstr = "End of file"; break; 00029 case AVERROR_INVALIDDATA: errstr = "Invalid data found when processing input"; break; 00030 case AVERROR_NUMEXPECTED: errstr = "Number syntax expected in filename"; break; 00031 case AVERROR_PATCHWELCOME: errstr = "Not yet implemented in FFmpeg, patches welcome"; break; 00032 } 00033 00034 if (errstr) { 00035 av_strlcpy(errbuf, errstr, errbuf_size); 00036 } else { 00037 #if HAVE_STRERROR_R 00038 ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size); 00039 #else 00040 ret = -1; 00041 #endif 00042 if (ret < 0) 00043 snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum); 00044 } 00045 00046 return ret; 00047 }