88d9ad6e8b49b6c7bd6bffafd312b58ad2797330
[libav.git] / libavutil / error.c
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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
22 int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
23 {
24 int ret = 0;
25 const char *errstr = NULL;
26
27 switch (errnum) {
28 case AVERROR_EOF: errstr = "End of file"; break;
29 case AVERROR_INVALIDDATA: errstr = "Invalid data found when processing input"; break;
30 case AVERROR_NOTSUPP: errstr = "Operation not supported"; break;
31 case AVERROR_NUMEXPECTED: errstr = "Number syntax expected in filename"; break;
32 case AVERROR_PATCHWELCOME: errstr = "Not yet implemented in FFmpeg, patches welcome"; break;
33 }
34
35 if (errstr) {
36 av_strlcpy(errbuf, errstr, errbuf_size);
37 } else {
38 #if HAVE_STRERROR_R
39 ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size);
40 #else
41 snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
42 #endif
43 }
44
45 return ret;
46 }