path: root/libavutil/error.c (plain)
blob: b96304837bb7685841a01da3c8100ec90b087bde

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