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https://git.ffmpeg.org/ffmpeg.git
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04a9e2a809
Use a string table instead to avoid relocations and don't add the tag string to libavutil/error.c: It is only used during the test program, so move it there. Reviewed-by: Rémi Denis-Courmont <remi@remlab.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
152 lines
8.4 KiB
C
152 lines
8.4 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#undef _GNU_SOURCE
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#define _XOPEN_SOURCE 600 /* XSI-compliant version of strerror_r */
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#include <stdio.h>
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#include <string.h>
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#include "config.h"
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#include "avstring.h"
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#include "error.h"
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#include "macros.h"
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#define AVERROR_INPUT_AND_OUTPUT_CHANGED (AVERROR_INPUT_CHANGED | AVERROR_OUTPUT_CHANGED)
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#define AVERROR_LIST(E, E2) \
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E(BSF_NOT_FOUND, "Bitstream filter not found") \
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E(BUG, "Internal bug, should not have happened") \
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E2(BUG2, BUG, "Internal bug, should not have happened") \
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E(BUFFER_TOO_SMALL, "Buffer too small") \
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E(DECODER_NOT_FOUND, "Decoder not found") \
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E(DEMUXER_NOT_FOUND, "Demuxer not found") \
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E(ENCODER_NOT_FOUND, "Encoder not found") \
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E(EOF, "End of file") \
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E(EXIT, "Immediate exit requested") \
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E(EXTERNAL, "Generic error in an external library") \
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E(FILTER_NOT_FOUND, "Filter not found") \
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E(INPUT_CHANGED, "Input changed") \
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E(INVALIDDATA, "Invalid data found when processing input") \
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E(MUXER_NOT_FOUND, "Muxer not found") \
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E(OPTION_NOT_FOUND, "Option not found") \
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E(OUTPUT_CHANGED, "Output changed") \
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E(PATCHWELCOME, "Not yet implemented in FFmpeg, patches welcome") \
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E(PROTOCOL_NOT_FOUND, "Protocol not found") \
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E(STREAM_NOT_FOUND, "Stream not found") \
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E(UNKNOWN, "Unknown error occurred") \
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E(EXPERIMENTAL, "Experimental feature") \
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E(INPUT_AND_OUTPUT_CHANGED, "Input and output changed") \
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E(HTTP_BAD_REQUEST, "Server returned 400 Bad Request") \
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E(HTTP_UNAUTHORIZED, "Server returned 401 Unauthorized (authorization failed)") \
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E(HTTP_FORBIDDEN, "Server returned 403 Forbidden (access denied)") \
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E(HTTP_NOT_FOUND, "Server returned 404 Not Found") \
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E(HTTP_TOO_MANY_REQUESTS, "Server returned 429 Too Many Requests") \
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E(HTTP_OTHER_4XX, "Server returned 4XX Client Error, but not one of 40{0,1,3,4}") \
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E(HTTP_SERVER_ERROR, "Server returned 5XX Server Error reply") \
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#define STRERROR_LIST(E) \
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E(E2BIG, "Argument list too long") \
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E(EACCES, "Permission denied") \
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E(EAGAIN, "Resource temporarily unavailable") \
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E(EBADF, "Bad file descriptor") \
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E(EBUSY, "Device or resource busy") \
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E(ECHILD, "No child processes") \
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E(EDEADLK, "Resource deadlock avoided") \
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E(EDOM, "Numerical argument out of domain") \
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E(EEXIST, "File exists") \
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E(EFAULT, "Bad address") \
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E(EFBIG, "File too large") \
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E(EILSEQ, "Illegal byte sequence") \
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E(EINTR, "Interrupted system call") \
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E(EINVAL, "Invalid argument") \
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E(EIO, "I/O error") \
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E(EISDIR, "Is a directory") \
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E(EMFILE, "Too many open files") \
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E(EMLINK, "Too many links") \
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E(ENAMETOOLONG, "File name too long") \
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E(ENFILE, "Too many open files in system") \
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E(ENODEV, "No such device") \
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E(ENOENT, "No such file or directory") \
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E(ENOEXEC, "Exec format error") \
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E(ENOLCK, "No locks available") \
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E(ENOMEM, "Cannot allocate memory") \
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E(ENOSPC, "No space left on device") \
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E(ENOSYS, "Function not implemented") \
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E(ENOTDIR, "Not a directory") \
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E(ENOTEMPTY, "Directory not empty") \
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E(ENOTTY, "Inappropriate I/O control operation") \
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E(ENXIO, "No such device or address") \
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E(EPERM, "Operation not permitted") \
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E(EPIPE, "Broken pipe") \
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E(ERANGE, "Result too large") \
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E(EROFS, "Read-only file system") \
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E(ESPIPE, "Illegal seek") \
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E(ESRCH, "No such process") \
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E(EXDEV, "Cross-device link") \
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enum {
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#define OFFSET(CODE, DESC) \
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ERROR_ ## CODE ## _OFFSET, \
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ERROR_ ## CODE ## _END_OFFSET = ERROR_ ## CODE ## _OFFSET + sizeof(DESC) - 1,
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#define NOTHING(CODE, CODE2, DESC)
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AVERROR_LIST(OFFSET, NOTHING)
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#if !HAVE_STRERROR_R
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STRERROR_LIST(OFFSET)
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#endif
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ERROR_LIST_SIZE
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};
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#define STRING(CODE, DESC) DESC "\0"
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static const char error_stringtable[ERROR_LIST_SIZE] =
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AVERROR_LIST(STRING, NOTHING)
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#if !HAVE_STRERROR_R
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STRERROR_LIST(STRING)
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#endif
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;
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static const struct ErrorEntry {
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int num;
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unsigned offset;
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} error_entries[] = {
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#define ENTRY(CODE, DESC) { .num = AVERROR_ ## CODE, .offset = ERROR_ ## CODE ## _OFFSET },
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#define ENTRY2(CODE, CODE2, DESC) { .num = AVERROR_ ## CODE, .offset = ERROR_ ## CODE2 ## _OFFSET },
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AVERROR_LIST(ENTRY, ENTRY2)
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#if !HAVE_STRERROR_R
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#undef ENTRY
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#define ENTRY(CODE, DESC) { .num = AVERROR(CODE), .offset = ERROR_ ## CODE ## _OFFSET },
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STRERROR_LIST(ENTRY)
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#endif
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};
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int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
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{
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for (size_t i = 0; i < FF_ARRAY_ELEMS(error_entries); ++i) {
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if (errnum == error_entries[i].num) {
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av_strlcpy(errbuf, error_stringtable + error_entries[i].offset, errbuf_size);
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return 0;
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}
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}
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#if HAVE_STRERROR_R
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int ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
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#else
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int ret = -1;
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#endif
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if (ret < 0)
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snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
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return ret;
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}
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