error.c (6907B)
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 <stdio.h> 22 #include <string.h> 23 #include "config.h" 24 #include "avstring.h" 25 #include "error.h" 26 #include "macros.h" 27 28 struct error_entry { 29 int num; 30 const char *tag; 31 const char *str; 32 }; 33 34 #define ERROR_TAG(tag) AVERROR_##tag, #tag 35 #define EERROR_TAG(tag) AVERROR(tag), #tag 36 #define AVERROR_INPUT_AND_OUTPUT_CHANGED (AVERROR_INPUT_CHANGED | AVERROR_OUTPUT_CHANGED) 37 static const struct error_entry error_entries[] = { 38 { ERROR_TAG(BSF_NOT_FOUND), "Bitstream filter not found" }, 39 { ERROR_TAG(BUG), "Internal bug, should not have happened" }, 40 { ERROR_TAG(BUG2), "Internal bug, should not have happened" }, 41 { ERROR_TAG(BUFFER_TOO_SMALL), "Buffer too small" }, 42 { ERROR_TAG(DECODER_NOT_FOUND), "Decoder not found" }, 43 { ERROR_TAG(DEMUXER_NOT_FOUND), "Demuxer not found" }, 44 { ERROR_TAG(ENCODER_NOT_FOUND), "Encoder not found" }, 45 { ERROR_TAG(EOF), "End of file" }, 46 { ERROR_TAG(EXIT), "Immediate exit requested" }, 47 { ERROR_TAG(EXTERNAL), "Generic error in an external library" }, 48 { ERROR_TAG(FILTER_NOT_FOUND), "Filter not found" }, 49 { ERROR_TAG(INPUT_CHANGED), "Input changed" }, 50 { ERROR_TAG(INVALIDDATA), "Invalid data found when processing input" }, 51 { ERROR_TAG(MUXER_NOT_FOUND), "Muxer not found" }, 52 { ERROR_TAG(OPTION_NOT_FOUND), "Option not found" }, 53 { ERROR_TAG(OUTPUT_CHANGED), "Output changed" }, 54 { ERROR_TAG(PATCHWELCOME), "Not yet implemented in FFmpeg, patches welcome" }, 55 { ERROR_TAG(PROTOCOL_NOT_FOUND), "Protocol not found" }, 56 { ERROR_TAG(STREAM_NOT_FOUND), "Stream not found" }, 57 { ERROR_TAG(UNKNOWN), "Unknown error occurred" }, 58 { ERROR_TAG(EXPERIMENTAL), "Experimental feature" }, 59 { ERROR_TAG(INPUT_AND_OUTPUT_CHANGED), "Input and output changed" }, 60 { ERROR_TAG(HTTP_BAD_REQUEST), "Server returned 400 Bad Request" }, 61 { ERROR_TAG(HTTP_UNAUTHORIZED), "Server returned 401 Unauthorized (authorization failed)" }, 62 { ERROR_TAG(HTTP_FORBIDDEN), "Server returned 403 Forbidden (access denied)" }, 63 { ERROR_TAG(HTTP_NOT_FOUND), "Server returned 404 Not Found" }, 64 { ERROR_TAG(HTTP_TOO_MANY_REQUESTS), "Server returned 429 Too Many Requests" }, 65 { ERROR_TAG(HTTP_OTHER_4XX), "Server returned 4XX Client Error, but not one of 40{0,1,3,4}" }, 66 { ERROR_TAG(HTTP_SERVER_ERROR), "Server returned 5XX Server Error reply" }, 67 #if !HAVE_STRERROR_R 68 { EERROR_TAG(E2BIG), "Argument list too long" }, 69 { EERROR_TAG(EACCES), "Permission denied" }, 70 { EERROR_TAG(EAGAIN), "Resource temporarily unavailable" }, 71 { EERROR_TAG(EBADF), "Bad file descriptor" }, 72 { EERROR_TAG(EBUSY), "Device or resource busy" }, 73 { EERROR_TAG(ECHILD), "No child processes" }, 74 { EERROR_TAG(EDEADLK), "Resource deadlock avoided" }, 75 { EERROR_TAG(EDOM), "Numerical argument out of domain" }, 76 { EERROR_TAG(EEXIST), "File exists" }, 77 { EERROR_TAG(EFAULT), "Bad address" }, 78 { EERROR_TAG(EFBIG), "File too large" }, 79 { EERROR_TAG(EILSEQ), "Illegal byte sequence" }, 80 { EERROR_TAG(EINTR), "Interrupted system call" }, 81 { EERROR_TAG(EINVAL), "Invalid argument" }, 82 { EERROR_TAG(EIO), "I/O error" }, 83 { EERROR_TAG(EISDIR), "Is a directory" }, 84 { EERROR_TAG(EMFILE), "Too many open files" }, 85 { EERROR_TAG(EMLINK), "Too many links" }, 86 { EERROR_TAG(ENAMETOOLONG), "File name too long" }, 87 { EERROR_TAG(ENFILE), "Too many open files in system" }, 88 { EERROR_TAG(ENODEV), "No such device" }, 89 { EERROR_TAG(ENOENT), "No such file or directory" }, 90 { EERROR_TAG(ENOEXEC), "Exec format error" }, 91 { EERROR_TAG(ENOLCK), "No locks available" }, 92 { EERROR_TAG(ENOMEM), "Cannot allocate memory" }, 93 { EERROR_TAG(ENOSPC), "No space left on device" }, 94 { EERROR_TAG(ENOSYS), "Function not implemented" }, 95 { EERROR_TAG(ENOTDIR), "Not a directory" }, 96 { EERROR_TAG(ENOTEMPTY), "Directory not empty" }, 97 { EERROR_TAG(ENOTTY), "Inappropriate I/O control operation" }, 98 { EERROR_TAG(ENXIO), "No such device or address" }, 99 { EERROR_TAG(EPERM), "Operation not permitted" }, 100 { EERROR_TAG(EPIPE), "Broken pipe" }, 101 { EERROR_TAG(ERANGE), "Result too large" }, 102 { EERROR_TAG(EROFS), "Read-only file system" }, 103 { EERROR_TAG(ESPIPE), "Illegal seek" }, 104 { EERROR_TAG(ESRCH), "No such process" }, 105 { EERROR_TAG(EXDEV), "Cross-device link" }, 106 #endif 107 }; 108 109 int av_strerror(int errnum, char *errbuf, size_t errbuf_size) 110 { 111 int ret = 0, i; 112 const struct error_entry *entry = NULL; 113 114 for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) { 115 if (errnum == error_entries[i].num) { 116 entry = &error_entries[i]; 117 break; 118 } 119 } 120 if (entry) { 121 av_strlcpy(errbuf, entry->str, errbuf_size); 122 } else { 123 #if HAVE_STRERROR_R 124 ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size)); 125 #else 126 ret = -1; 127 #endif 128 if (ret < 0) 129 snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum); 130 } 131 132 return ret; 133 }