FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavutil/error.h
Date: 2025-10-31 17:51:11
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Lines: 3 3 100.0%
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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 /**
20 * @file
21 * error code definitions
22 */
23
24 #ifndef AVUTIL_ERROR_H
25 #define AVUTIL_ERROR_H
26
27 #include <errno.h>
28 #include <stddef.h>
29
30 #include "macros.h"
31
32 /**
33 * @addtogroup lavu_error
34 *
35 * @{
36 */
37
38
39 /* error handling */
40 #if EDOM > 0
41 #define AVERROR(e) (-(e)) ///< Returns a negative error code from a POSIX error code, to return from library functions.
42 #define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value.
43 #else
44 /* Some platforms have E* and errno already negated. */
45 #define AVERROR(e) (e)
46 #define AVUNERROR(e) (e)
47 #endif
48
49 #define FFERRTAG(a, b, c, d) (-(int)MKTAG(a, b, c, d))
50
51 #define AVERROR_BSF_NOT_FOUND FFERRTAG(0xF8,'B','S','F') ///< Bitstream filter not found
52 #define AVERROR_BUG FFERRTAG( 'B','U','G','!') ///< Internal bug, also see AVERROR_BUG2
53 #define AVERROR_BUFFER_TOO_SMALL FFERRTAG( 'B','U','F','S') ///< Buffer too small
54 #define AVERROR_DECODER_NOT_FOUND FFERRTAG(0xF8,'D','E','C') ///< Decoder not found
55 #define AVERROR_DEMUXER_NOT_FOUND FFERRTAG(0xF8,'D','E','M') ///< Demuxer not found
56 #define AVERROR_ENCODER_NOT_FOUND FFERRTAG(0xF8,'E','N','C') ///< Encoder not found
57 #define AVERROR_EOF FFERRTAG( 'E','O','F',' ') ///< End of file
58 #define AVERROR_EXIT FFERRTAG( 'E','X','I','T') ///< Immediate exit was requested; the called function should not be restarted
59 #define AVERROR_EXTERNAL FFERRTAG( 'E','X','T',' ') ///< Generic error in an external library
60 #define AVERROR_FILTER_NOT_FOUND FFERRTAG(0xF8,'F','I','L') ///< Filter not found
61 #define AVERROR_INVALIDDATA FFERRTAG( 'I','N','D','A') ///< Invalid data found when processing input
62 #define AVERROR_MUXER_NOT_FOUND FFERRTAG(0xF8,'M','U','X') ///< Muxer not found
63 #define AVERROR_OPTION_NOT_FOUND FFERRTAG(0xF8,'O','P','T') ///< Option not found
64 #define AVERROR_PATCHWELCOME FFERRTAG( 'P','A','W','E') ///< Not yet implemented in FFmpeg, patches welcome
65 #define AVERROR_PROTOCOL_NOT_FOUND FFERRTAG(0xF8,'P','R','O') ///< Protocol not found
66
67 #define AVERROR_STREAM_NOT_FOUND FFERRTAG(0xF8,'S','T','R') ///< Stream not found
68 /**
69 * This is semantically identical to AVERROR_BUG
70 * it has been introduced in Libav after our AVERROR_BUG and with a modified value.
71 */
72 #define AVERROR_BUG2 FFERRTAG( 'B','U','G',' ')
73 #define AVERROR_UNKNOWN FFERRTAG( 'U','N','K','N') ///< Unknown error, typically from an external library
74 #define AVERROR_EXPERIMENTAL (-0x2bb2afa8) ///< Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it.
75 #define AVERROR_INPUT_CHANGED (-0x636e6701) ///< Input changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_OUTPUT_CHANGED)
76 #define AVERROR_OUTPUT_CHANGED (-0x636e6702) ///< Output changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_INPUT_CHANGED)
77 /* HTTP & RTSP errors */
78 #define AVERROR_HTTP_BAD_REQUEST FFERRTAG(0xF8,'4','0','0')
79 #define AVERROR_HTTP_UNAUTHORIZED FFERRTAG(0xF8,'4','0','1')
80 #define AVERROR_HTTP_FORBIDDEN FFERRTAG(0xF8,'4','0','3')
81 #define AVERROR_HTTP_NOT_FOUND FFERRTAG(0xF8,'4','0','4')
82 #define AVERROR_HTTP_TOO_MANY_REQUESTS FFERRTAG(0xF8,'4','2','9')
83 #define AVERROR_HTTP_OTHER_4XX FFERRTAG(0xF8,'4','X','X')
84 #define AVERROR_HTTP_SERVER_ERROR FFERRTAG(0xF8,'5','X','X')
85
86 #define AV_ERROR_MAX_STRING_SIZE 64
87
88 /**
89 * Put a description of the AVERROR code errnum in errbuf.
90 * In case of failure the global variable errno is set to indicate the
91 * error. Even in case of failure av_strerror() will print a generic
92 * error message indicating the errnum provided to errbuf.
93 *
94 * @param errnum error code to describe
95 * @param errbuf buffer to which description is written
96 * @param errbuf_size the size in bytes of errbuf
97 * @return 0 on success, a negative value if a description for errnum
98 * cannot be found
99 */
100 int av_strerror(int errnum, char *errbuf, size_t errbuf_size);
101
102 /**
103 * Fill the provided buffer with a string containing an error string
104 * corresponding to the AVERROR code errnum.
105 *
106 * @param errbuf a buffer
107 * @param errbuf_size size in bytes of errbuf
108 * @param errnum error code to describe
109 * @return the buffer in input, filled with the error description
110 * @see av_strerror()
111 */
112 9423 static inline char *av_make_error_string(char *errbuf, size_t errbuf_size, int errnum)
113 {
114 9423 av_strerror(errnum, errbuf, errbuf_size);
115 9423 return errbuf;
116 }
117
118 /**
119 * Convenience macro, the return value should be used only directly in
120 * function arguments but never stand-alone.
121 */
122 #define av_err2str(errnum) \
123 av_make_error_string((char[AV_ERROR_MAX_STRING_SIZE]){0}, AV_ERROR_MAX_STRING_SIZE, errnum)
124
125 /**
126 * @}
127 */
128
129 #endif /* AVUTIL_ERROR_H */
130