| 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 | #define _XOPEN_SOURCE 600 /* XSI-compliant version of strerror_r */ |
| 21 | #include "avutil.h" |
| 22 | #include "avstring.h" |
| 23 | #include "common.h" |
| 24 | |
| 25 | struct error_entry { |
| 26 | int num; |
| 27 | const char *tag; |
| 28 | const char *str; |
| 29 | }; |
| 30 | |
| 31 | #define ERROR_TAG(tag) AVERROR_##tag, #tag |
| 32 | #define AVERROR_INPUT_AND_OUTPUT_CHANGED (AVERROR_INPUT_CHANGED | AVERROR_OUTPUT_CHANGED) |
| 33 | static const struct error_entry error_entries[] = { |
| 34 | { ERROR_TAG(BSF_NOT_FOUND), "Bitstream filter not found" }, |
| 35 | { ERROR_TAG(BUG), "Internal bug, should not have happened" }, |
| 36 | { ERROR_TAG(BUG2), "Internal bug, should not have happened" }, |
| 37 | { ERROR_TAG(BUFFER_TOO_SMALL), "Buffer too small" }, |
| 38 | { ERROR_TAG(DECODER_NOT_FOUND), "Decoder not found" }, |
| 39 | { ERROR_TAG(DEMUXER_NOT_FOUND), "Demuxer not found" }, |
| 40 | { ERROR_TAG(ENCODER_NOT_FOUND), "Encoder not found" }, |
| 41 | { ERROR_TAG(EOF), "End of file" }, |
| 42 | { ERROR_TAG(EXIT), "Immediate exit requested" }, |
| 43 | { ERROR_TAG(EXTERNAL), "Generic error in an external library" }, |
| 44 | { ERROR_TAG(FILTER_NOT_FOUND), "Filter not found" }, |
| 45 | { ERROR_TAG(INPUT_CHANGED), "Input changed" }, |
| 46 | { ERROR_TAG(INVALIDDATA), "Invalid data found when processing input" }, |
| 47 | { ERROR_TAG(MUXER_NOT_FOUND), "Muxer not found" }, |
| 48 | { ERROR_TAG(OPTION_NOT_FOUND), "Option not found" }, |
| 49 | { ERROR_TAG(OUTPUT_CHANGED), "Output changed" }, |
| 50 | { ERROR_TAG(PATCHWELCOME), "Not yet implemented in FFmpeg, patches welcome" }, |
| 51 | { ERROR_TAG(PROTOCOL_NOT_FOUND), "Protocol not found" }, |
| 52 | { ERROR_TAG(STREAM_NOT_FOUND), "Stream not found" }, |
| 53 | { ERROR_TAG(UNKNOWN), "Unknown error occurred" }, |
| 54 | { ERROR_TAG(EXPERIMENTAL), "Experimental feature" }, |
| 55 | { ERROR_TAG(INPUT_AND_OUTPUT_CHANGED), "Input and output changed" }, |
| 56 | { ERROR_TAG(HTTP_BAD_REQUEST), "Server returned 400 Bad Request" }, |
| 57 | { ERROR_TAG(HTTP_UNAUTHORIZED), "Server returned 401 Unauthorized (authorization failed)" }, |
| 58 | { ERROR_TAG(HTTP_FORBIDDEN), "Server returned 403 Forbidden (access denied)" }, |
| 59 | { ERROR_TAG(HTTP_NOT_FOUND), "Server returned 404 Not Found" }, |
| 60 | { ERROR_TAG(HTTP_OTHER_4XX), "Server returned 4XX Client Error, but not one of 40{0,1,3,4}" }, |
| 61 | { ERROR_TAG(HTTP_SERVER_ERROR), "Server returned 5XX Server Error reply" }, |
| 62 | }; |
| 63 | |
| 64 | int av_strerror(int errnum, char *errbuf, size_t errbuf_size) |
| 65 | { |
| 66 | int ret = 0, i; |
| 67 | const struct error_entry *entry = NULL; |
| 68 | |
| 69 | for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) { |
| 70 | if (errnum == error_entries[i].num) { |
| 71 | entry = &error_entries[i]; |
| 72 | break; |
| 73 | } |
| 74 | } |
| 75 | if (entry) { |
| 76 | av_strlcpy(errbuf, entry->str, errbuf_size); |
| 77 | } else { |
| 78 | #if HAVE_STRERROR_R |
| 79 | ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size)); |
| 80 | #else |
| 81 | ret = -1; |
| 82 | #endif |
| 83 | if (ret < 0) |
| 84 | snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum); |
| 85 | } |
| 86 | |
| 87 | return ret; |
| 88 | } |
| 89 | |
| 90 | #ifdef TEST |
| 91 | |
| 92 | #undef printf |
| 93 | |
| 94 | int main(void) |
| 95 | { |
| 96 | int i; |
| 97 | |
| 98 | for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) { |
| 99 | const struct error_entry *entry = &error_entries[i]; |
| 100 | printf("%d: %s [%s]\n", entry->num, av_err2str(entry->num), entry->tag); |
| 101 | } |
| 102 | |
| 103 | for (i = 0; i < 256; i++) { |
| 104 | printf("%d: %s\n", -i, av_err2str(-i)); |
| 105 | } |
| 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | #endif /* TEST */ |