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avformat/rmdec: when reading audio blocks, dont leave holes when reading fails
[android-x86/external-ffmpeg.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 #undef _GNU_SOURCE
20 #include "avutil.h"
21 #include "avstring.h"
22 #include "common.h"
23
24 struct error_entry {
25     int num;
26     const char *tag;
27     const char *str;
28 };
29
30 #define ERROR_TAG(tag) AVERROR_##tag, #tag
31 static const struct error_entry error_entries[] = {
32     { ERROR_TAG(BSF_NOT_FOUND),      "Bitstream filter not found"                     },
33     { ERROR_TAG(BUG),                "Internal bug, should not have happened"         },
34     { ERROR_TAG(BUG2),               "Internal bug, should not have happened"         },
35     { ERROR_TAG(BUFFER_TOO_SMALL),   "Buffer too small"                               },
36     { ERROR_TAG(DECODER_NOT_FOUND),  "Decoder not found"                              },
37     { ERROR_TAG(DEMUXER_NOT_FOUND),  "Demuxer not found"                              },
38     { ERROR_TAG(ENCODER_NOT_FOUND),  "Encoder not found"                              },
39     { ERROR_TAG(EOF),                "End of file"                                    },
40     { ERROR_TAG(EXIT),               "Immediate exit requested"                       },
41     { ERROR_TAG(EXTERNAL),           "Generic error in an external library"           },
42     { ERROR_TAG(FILTER_NOT_FOUND),   "Filter not found"                               },
43     { ERROR_TAG(INVALIDDATA),        "Invalid data found when processing input"       },
44     { ERROR_TAG(MUXER_NOT_FOUND),    "Muxer not found"                                },
45     { ERROR_TAG(OPTION_NOT_FOUND),   "Option not found"                               },
46     { ERROR_TAG(PATCHWELCOME),       "Not yet implemented in FFmpeg, patches welcome" },
47     { ERROR_TAG(PROTOCOL_NOT_FOUND), "Protocol not found"                             },
48     { ERROR_TAG(STREAM_NOT_FOUND),   "Stream not found"                               },
49     { ERROR_TAG(UNKNOWN),            "Unknown error occurred"                         },
50     { ERROR_TAG(EXPERIMENTAL),       "Experimental feature"                           },
51 };
52
53 int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
54 {
55     int ret = 0, i;
56     const struct error_entry *entry = NULL;
57
58     for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
59         if (errnum == error_entries[i].num) {
60             entry = &error_entries[i];
61             break;
62         }
63     }
64     if (entry) {
65         av_strlcpy(errbuf, entry->str, errbuf_size);
66     } else {
67 #if HAVE_STRERROR_R
68         ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
69 #else
70         ret = -1;
71 #endif
72         if (ret < 0)
73             snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
74     }
75
76     return ret;
77 }
78
79 #ifdef TEST
80
81 #undef printf
82
83 int main(void)
84 {
85     int i;
86
87     for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
88         const struct error_entry *entry = &error_entries[i];
89         printf("%d: %s [%s]\n", entry->num, av_err2str(entry->num), entry->tag);
90     }
91
92     for (i = 0; i < 256; i++) {
93         printf("%d: %s\n", -i, av_err2str(-i));
94     }
95
96     return 0;
97 }
98
99 #endif /* TEST */