| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #undef _GNU_SOURCE |
| #define _XOPEN_SOURCE 600 /* XSI-compliant version of strerror_r */ |
| #include <stdio.h> |
| #include <string.h> |
| #include "config.h" |
| #include "avstring.h" |
| #include "error.h" |
| #include "macros.h" |
| |
| #define AVERROR_INPUT_AND_OUTPUT_CHANGED (AVERROR_INPUT_CHANGED | AVERROR_OUTPUT_CHANGED) |
| |
| #define AVERROR_LIST(E, E2) \ |
| E(BSF_NOT_FOUND, "Bitstream filter not found") \ |
| E(BUG, "Internal bug, should not have happened") \ |
| E2(BUG2, BUG, "Internal bug, should not have happened") \ |
| E(BUFFER_TOO_SMALL, "Buffer too small") \ |
| E(DECODER_NOT_FOUND, "Decoder not found") \ |
| E(DEMUXER_NOT_FOUND, "Demuxer not found") \ |
| E(ENCODER_NOT_FOUND, "Encoder not found") \ |
| E(EOF, "End of file") \ |
| E(EXIT, "Immediate exit requested") \ |
| E(EXTERNAL, "Generic error in an external library") \ |
| E(FILTER_NOT_FOUND, "Filter not found") \ |
| E(INPUT_CHANGED, "Input changed") \ |
| E(INVALIDDATA, "Invalid data found when processing input") \ |
| E(MUXER_NOT_FOUND, "Muxer not found") \ |
| E(OPTION_NOT_FOUND, "Option not found") \ |
| E(OUTPUT_CHANGED, "Output changed") \ |
| E(PATCHWELCOME, "Not yet implemented in FFmpeg, patches welcome") \ |
| E(PROTOCOL_NOT_FOUND, "Protocol not found") \ |
| E(STREAM_NOT_FOUND, "Stream not found") \ |
| E(UNKNOWN, "Unknown error occurred") \ |
| E(EXPERIMENTAL, "Experimental feature") \ |
| E(INPUT_AND_OUTPUT_CHANGED, "Input and output changed") \ |
| E(HTTP_BAD_REQUEST, "Server returned 400 Bad Request") \ |
| E(HTTP_UNAUTHORIZED, "Server returned 401 Unauthorized (authorization failed)") \ |
| E(HTTP_FORBIDDEN, "Server returned 403 Forbidden (access denied)") \ |
| E(HTTP_NOT_FOUND, "Server returned 404 Not Found") \ |
| E(HTTP_TOO_MANY_REQUESTS, "Server returned 429 Too Many Requests") \ |
| E(HTTP_OTHER_4XX, "Server returned 4XX Client Error, but not one of 40{0,1,3,4}") \ |
| E(HTTP_SERVER_ERROR, "Server returned 5XX Server Error reply") \ |
| |
| #define STRERROR_LIST(E) \ |
| E(E2BIG, "Argument list too long") \ |
| E(EACCES, "Permission denied") \ |
| E(EAGAIN, "Resource temporarily unavailable") \ |
| E(EBADF, "Bad file descriptor") \ |
| E(EBUSY, "Device or resource busy") \ |
| E(ECHILD, "No child processes") \ |
| E(EDEADLK, "Resource deadlock avoided") \ |
| E(EDOM, "Numerical argument out of domain") \ |
| E(EEXIST, "File exists") \ |
| E(EFAULT, "Bad address") \ |
| E(EFBIG, "File too large") \ |
| E(EILSEQ, "Illegal byte sequence") \ |
| E(EINTR, "Interrupted system call") \ |
| E(EINVAL, "Invalid argument") \ |
| E(EIO, "I/O error") \ |
| E(EISDIR, "Is a directory") \ |
| E(EMFILE, "Too many open files") \ |
| E(EMLINK, "Too many links") \ |
| E(ENAMETOOLONG, "File name too long") \ |
| E(ENFILE, "Too many open files in system") \ |
| E(ENODEV, "No such device") \ |
| E(ENOENT, "No such file or directory") \ |
| E(ENOEXEC, "Exec format error") \ |
| E(ENOLCK, "No locks available") \ |
| E(ENOMEM, "Cannot allocate memory") \ |
| E(ENOSPC, "No space left on device") \ |
| E(ENOSYS, "Function not implemented") \ |
| E(ENOTDIR, "Not a directory") \ |
| E(ENOTEMPTY, "Directory not empty") \ |
| E(ENOTTY, "Inappropriate I/O control operation") \ |
| E(ENXIO, "No such device or address") \ |
| E(EPERM, "Operation not permitted") \ |
| E(EPIPE, "Broken pipe") \ |
| E(ERANGE, "Result too large") \ |
| E(EROFS, "Read-only file system") \ |
| E(ESPIPE, "Illegal seek") \ |
| E(ESRCH, "No such process") \ |
| E(EXDEV, "Cross-device link") \ |
| |
| enum { |
| #define OFFSET(CODE, DESC) \ |
| ERROR_ ## CODE ## _OFFSET, \ |
| ERROR_ ## CODE ## _END_OFFSET = ERROR_ ## CODE ## _OFFSET + sizeof(DESC) - 1, |
| #define NOTHING(CODE, CODE2, DESC) |
| AVERROR_LIST(OFFSET, NOTHING) |
| #if !HAVE_STRERROR_R |
| STRERROR_LIST(OFFSET) |
| #endif |
| ERROR_LIST_SIZE |
| }; |
| |
| #define STRING(CODE, DESC) DESC "\0" |
| static const char error_stringtable[ERROR_LIST_SIZE] = |
| AVERROR_LIST(STRING, NOTHING) |
| #if !HAVE_STRERROR_R |
| STRERROR_LIST(STRING) |
| #endif |
| ; |
| |
| static const struct ErrorEntry { |
| int num; |
| unsigned offset; |
| } error_entries[] = { |
| #define ENTRY(CODE, DESC) { .num = AVERROR_ ## CODE, .offset = ERROR_ ## CODE ## _OFFSET }, |
| #define ENTRY2(CODE, CODE2, DESC) { .num = AVERROR_ ## CODE, .offset = ERROR_ ## CODE2 ## _OFFSET }, |
| AVERROR_LIST(ENTRY, ENTRY2) |
| #if !HAVE_STRERROR_R |
| #undef ENTRY |
| #define ENTRY(CODE, DESC) { .num = AVERROR(CODE), .offset = ERROR_ ## CODE ## _OFFSET }, |
| STRERROR_LIST(ENTRY) |
| #endif |
| }; |
| |
| int av_strerror(int errnum, char *errbuf, size_t errbuf_size) |
| { |
| for (size_t i = 0; i < FF_ARRAY_ELEMS(error_entries); ++i) { |
| if (errnum == error_entries[i].num) { |
| av_strlcpy(errbuf, error_stringtable + error_entries[i].offset, errbuf_size); |
| return 0; |
| } |
| } |
| #if HAVE_STRERROR_R |
| int ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size)); |
| #else |
| int ret = -1; |
| #endif |
| if (ret < 0) |
| snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum); |
| |
| return ret; |
| } |
