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1 /* | |
2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> | |
3 * | |
4 * This file is part of FFmpeg. | |
5 * | |
6 * FFmpeg is free software; you can redistribute it and/or | |
7 * modify it under the terms of the GNU Lesser General Public | |
8 * License as published by the Free Software Foundation; either | |
9 * version 2.1 of the License, or (at your option) any later version. | |
10 * | |
11 * FFmpeg is distributed in the hope that it will be useful, | |
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 * Lesser General Public License for more details. | |
15 * | |
16 * You should have received a copy of the GNU Lesser General Public | |
17 * License along with FFmpeg; if not, write to the Free Software | |
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 */ | |
20 | |
21 #ifndef AVUTIL_LOG_H | |
22 #define AVUTIL_LOG_H | |
23 | |
24 #include <stdarg.h> | |
25 #include "avutil.h" | |
26 | |
27 /** | |
28 * Describes the class of an AVClass context structure. That is an | |
29 * arbitrary struct of which the first field is a pointer to an | |
30 * AVClass struct (e.g. AVCodecContext, AVFormatContext etc.). | |
31 */ | |
32 typedef struct AVCLASS AVClass; | |
33 struct AVCLASS { | |
34 /** | |
35 * The name of the class; usually it is the same name as the | |
36 * context structure type to which the AVClass is associated. | |
37 */ | |
38 const char* class_name; | |
39 | |
40 /** | |
41 * A pointer to a function which returns the name of a context | |
42 * instance \p ctx associated with the class. | |
43 */ | |
44 const char* (*item_name)(void* ctx); | |
45 | |
46 /** | |
47 * a pointer to the first option specified in the class if any or NULL | |
48 * | |
49 * @see av_set_default_options() | |
50 */ | |
51 const struct AVOption *option; | |
52 }; | |
53 | |
54 /* av_log API */ | |
55 | |
56 #define AV_LOG_QUIET -8 | |
57 | |
58 /** | |
59 * Something went really wrong and we will crash now. | |
60 */ | |
61 #define AV_LOG_PANIC 0 | |
62 | |
63 /** | |
64 * Something went wrong and recovery is not possible. | |
65 * For example, no header was found for a format which depends | |
66 * on headers or an illegal combination of parameters is used. | |
67 */ | |
68 #define AV_LOG_FATAL 8 | |
69 | |
70 /** | |
71 * Something went wrong and cannot losslessly be recovered. | |
72 * However, not all future data is affected. | |
73 */ | |
74 #define AV_LOG_ERROR 16 | |
75 | |
76 /** | |
77 * Something somehow does not look correct. This may or may not | |
78 * lead to problems. An example would be the use of '-vstrict -2'. | |
79 */ | |
80 #define AV_LOG_WARNING 24 | |
81 | |
82 #define AV_LOG_INFO 32 | |
83 #define AV_LOG_VERBOSE 40 | |
84 | |
85 /** | |
86 * Stuff which is only useful for libav* developers. | |
87 */ | |
88 #define AV_LOG_DEBUG 48 | |
89 | |
90 /** | |
91 * Sends the specified message to the log if the level is less than or equal | |
92 * to the current av_log_level. By default, all logging messages are sent to | |
93 * stderr. This behavior can be altered by setting a different av_vlog callback | |
94 * function. | |
95 * | |
96 * @param avcl A pointer to an arbitrary struct of which the first field is a | |
97 * pointer to an AVClass struct. | |
98 * @param level The importance level of the message, lower values signifying | |
99 * higher importance. | |
100 * @param fmt The format string (printf-compatible) that specifies how | |
101 * subsequent arguments are converted to output. | |
102 * @see av_vlog | |
103 */ | |
104 #ifdef __GNUC__ | |
105 void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (
__printf__, 3, 4))); | |
106 #else | |
107 void av_log(void*, int level, const char *fmt, ...); | |
108 #endif | |
109 | |
110 void av_vlog(void*, int level, const char *fmt, va_list); | |
111 int av_log_get_level(void); | |
112 void av_log_set_level(int); | |
113 void av_log_set_callback(void (*)(void*, int, const char*, va_list)); | |
114 void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl); | |
115 | |
116 #endif /* AVUTIL_LOG_H */ | |
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