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error.c
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error.c
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/*
* 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 "avutil.h"
#include "avstring.h"
#include "common.h"
struct error_entry {
int num;
const char *tag;
const char *str;
};
#define ERROR_TAG(tag) AVERROR_##tag, #tag
#define EERROR_TAG(tag) AVERROR(tag), #tag
#define AVERROR_INPUT_AND_OUTPUT_CHANGED (AVERROR_INPUT_CHANGED | AVERROR_OUTPUT_CHANGED)
static const struct error_entry error_entries[] = {
{ ERROR_TAG(BSF_NOT_FOUND), "Bitstream filter not found" },
{ ERROR_TAG(BUG), "Internal bug, should not have happened" },
{ ERROR_TAG(BUG2), "Internal bug, should not have happened" },
{ ERROR_TAG(BUFFER_TOO_SMALL), "Buffer too small" },
{ ERROR_TAG(DECODER_NOT_FOUND), "Decoder not found" },
{ ERROR_TAG(DEMUXER_NOT_FOUND), "Demuxer not found" },
{ ERROR_TAG(ENCODER_NOT_FOUND), "Encoder not found" },
{ ERROR_TAG(EOF), "End of file" },
{ ERROR_TAG(EXIT), "Immediate exit requested" },
{ ERROR_TAG(EXTERNAL), "Generic error in an external library" },
{ ERROR_TAG(FILTER_NOT_FOUND), "Filter not found" },
{ ERROR_TAG(INPUT_CHANGED), "Input changed" },
{ ERROR_TAG(INVALIDDATA), "Invalid data found when processing input" },
{ ERROR_TAG(MUXER_NOT_FOUND), "Muxer not found" },
{ ERROR_TAG(OPTION_NOT_FOUND), "Option not found" },
{ ERROR_TAG(OUTPUT_CHANGED), "Output changed" },
{ ERROR_TAG(PATCHWELCOME), "Not yet implemented in FFmpeg, patches welcome" },
{ ERROR_TAG(PROTOCOL_NOT_FOUND), "Protocol not found" },
{ ERROR_TAG(STREAM_NOT_FOUND), "Stream not found" },
{ ERROR_TAG(UNKNOWN), "Unknown error occurred" },
{ ERROR_TAG(EXPERIMENTAL), "Experimental feature" },
{ ERROR_TAG(INPUT_AND_OUTPUT_CHANGED), "Input and output changed" },
{ ERROR_TAG(HTTP_BAD_REQUEST), "Server returned 400 Bad Request" },
{ ERROR_TAG(HTTP_UNAUTHORIZED), "Server returned 401 Unauthorized (authorization failed)" },
{ ERROR_TAG(HTTP_FORBIDDEN), "Server returned 403 Forbidden (access denied)" },
{ ERROR_TAG(HTTP_NOT_FOUND), "Server returned 404 Not Found" },
{ ERROR_TAG(HTTP_OTHER_4XX), "Server returned 4XX Client Error, but not one of 40{0,1,3,4}" },
{ ERROR_TAG(HTTP_SERVER_ERROR), "Server returned 5XX Server Error reply" },
#if !HAVE_STRERROR_R
{ EERROR_TAG(E2BIG), "Argument list too long" },
{ EERROR_TAG(EACCES), "Permission denied" },
{ EERROR_TAG(EAGAIN), "Resource temporarily unavailable" },
{ EERROR_TAG(EBADF), "Bad file descriptor" },
{ EERROR_TAG(EBUSY), "Device or resource busy" },
{ EERROR_TAG(ECHILD), "No child processes" },
{ EERROR_TAG(EDEADLK), "Resource deadlock avoided" },
{ EERROR_TAG(EDOM), "Numerical argument out of domain" },
{ EERROR_TAG(EEXIST), "File exists" },
{ EERROR_TAG(EFAULT), "Bad address" },
{ EERROR_TAG(EFBIG), "File too large" },
{ EERROR_TAG(EILSEQ), "Illegal byte sequence" },
{ EERROR_TAG(EINTR), "Interrupted system call" },
{ EERROR_TAG(EINVAL), "Invalid argument" },
{ EERROR_TAG(EIO), "I/O error" },
{ EERROR_TAG(EISDIR), "Is a directory" },
{ EERROR_TAG(EMFILE), "Too many open files" },
{ EERROR_TAG(EMLINK), "Too many links" },
{ EERROR_TAG(ENAMETOOLONG), "File name too long" },
{ EERROR_TAG(ENFILE), "Too many open files in system" },
{ EERROR_TAG(ENODEV), "No such device" },
{ EERROR_TAG(ENOENT), "No such file or directory" },
{ EERROR_TAG(ENOEXEC), "Exec format error" },
{ EERROR_TAG(ENOLCK), "No locks available" },
{ EERROR_TAG(ENOMEM), "Cannot allocate memory" },
{ EERROR_TAG(ENOSPC), "No space left on device" },
{ EERROR_TAG(ENOSYS), "Function not implemented" },
{ EERROR_TAG(ENOTDIR), "Not a directory" },
{ EERROR_TAG(ENOTEMPTY), "Directory not empty" },
{ EERROR_TAG(ENOTTY), "Inappropriate I/O control operation" },
{ EERROR_TAG(ENXIO), "No such device or address" },
{ EERROR_TAG(EPERM), "Operation not permitted" },
{ EERROR_TAG(EPIPE), "Broken pipe" },
{ EERROR_TAG(ERANGE), "Result too large" },
{ EERROR_TAG(EROFS), "Read-only file system" },
{ EERROR_TAG(ESPIPE), "Illegal seek" },
{ EERROR_TAG(ESRCH), "No such process" },
{ EERROR_TAG(EXDEV), "Cross-device link" },
#endif
};
int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
{
int ret = 0, i;
const struct error_entry *entry = NULL;
for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
if (errnum == error_entries[i].num) {
entry = &error_entries[i];
break;
}
}
if (entry) {
av_strlcpy(errbuf, entry->str, errbuf_size);
} else {
#if HAVE_STRERROR_R
ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
#else
ret = -1;
#endif
if (ret < 0)
snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
}
return ret;
}
#ifdef TEST
#undef printf
int main(void)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
const struct error_entry *entry = &error_entries[i];
printf("%d: %s [%s]\n", entry->num, av_err2str(entry->num), entry->tag);
}
for (i = 0; i < 256; i++) {
printf("%d: %s\n", -i, av_err2str(-i));
}
return 0;
}
#endif /* TEST */