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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 <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
};
#define STRING(CODE, DESC) DESC "\0"
static const char error_stringtable[] =
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((unsigned)errnum), errbuf, errbuf_size));
#else
int ret = -1;
#endif
if (ret < 0)
snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
return ret;
}
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