Statistics
| Branch: | Revision:

ffmpeg / libavutil / log.h @ bfe3676f

History | View | Annotate | Download (3.73 KB)

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
#if LIBAVUTIL_VERSION_INT < (50<<16)
57
#define AV_LOG_QUIET -1
58
#define AV_LOG_FATAL 0
59
#define AV_LOG_ERROR 0
60
#define AV_LOG_WARNING 1
61
#define AV_LOG_INFO 1
62
#define AV_LOG_VERBOSE 1
63
#define AV_LOG_DEBUG 2
64
#else
65
#define AV_LOG_QUIET    -8
66

    
67
/**
68
 * Something went really wrong and we will crash now.
69
 */
70
#define AV_LOG_PANIC     0
71

    
72
/**
73
 * something went wrong and recovery is not possible
74
 * like no header in a format which depends on it or a combination
75
 * of parameters which are not allowed
76
 */
77
#define AV_LOG_FATAL     8
78

    
79
/**
80
 * something went wrong and cannot losslessly be recovered
81
 * but not all future data is affected
82
 */
83
#define AV_LOG_ERROR    16
84

    
85
/**
86
 * something somehow does not look correct / something which may or may not
87
 * lead to some problems like use of -vstrict -2
88
 */
89
#define AV_LOG_WARNING  24
90

    
91
#define AV_LOG_INFO     32
92
#define AV_LOG_VERBOSE  40
93

    
94
/**
95
 * Stuff which is only useful for libav* developers.
96
 */
97
#define AV_LOG_DEBUG    48
98
#endif
99

    
100
#if LIBAVUTIL_VERSION_INT < (50<<16)
101
extern int av_log_level;
102
#endif
103

    
104
/**
105
 * Sends the specified message to the log if the level is less than or equal
106
 * to the current av_log_level. By default, all logging messages are sent to
107
 * stderr. This behavior can be altered by setting a different av_vlog callback
108
 * function.
109
 *
110
 * @param avcl A pointer to an arbitrary struct of which the first field is a
111
 * pointer to an AVClass struct.
112
 * @param level The importance level of the message, lower values signifying
113
 * higher importance.
114
 * @param fmt The format string (printf-compatible) that specifies how
115
 * subsequent arguments are converted to output.
116
 * @see av_vlog
117
 */
118
#ifdef __GNUC__
119
void av_log(void*, int level, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 3, 4)));
120
#else
121
void av_log(void*, int level, const char *fmt, ...);
122
#endif
123

    
124
void av_vlog(void*, int level, const char *fmt, va_list);
125
int av_log_get_level(void);
126
void av_log_set_level(int);
127
void av_log_set_callback(void (*)(void*, int, const char*, va_list));
128
void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl);
129

    
130
#endif /* AVUTIL_LOG_H */