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1 /*
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2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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3 *
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4 * This file is part of FFmpeg.
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5 *
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6 * FFmpeg is free software; you can redistribute it and/or
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7 * modify it under the terms of the GNU Lesser General Public
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8 * License as published by the Free Software Foundation; either
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9 * version 2.1 of the License, or (at your option) any later version.
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10 *
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11 * FFmpeg is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Lesser General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Lesser General Public
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17 * License along with FFmpeg; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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19 */
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20
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21 #ifndef AVUTIL_LOG_H
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22 #define AVUTIL_LOG_H
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23
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24 #include <stdarg.h>
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25 //#include "avutil.h"
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26
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27 /**
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28 * Describes the class of an AVClass context structure. That is an
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29 * arbitrary struct of which the first field is a pointer to an
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30 * AVClass struct (e.g. AVCodecContext, AVFormatContext etc.).
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31 */
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32 typedef struct {
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33 /**
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34 * The name of the class; usually it is the same name as the
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35 * context structure type to which the AVClass is associated.
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36 */
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37 const char* class_name;
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38
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39 /**
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40 * A pointer to a function which returns the name of a context
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41 * instance ctx associated with the class.
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42 */
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43 const char* (*item_name)(void* ctx);
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44
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45 /**
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46 * a pointer to the first option specified in the class if any or NULL
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47 *
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48 * @see av_set_default_options()
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49 */
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50 const struct AVOption *option;
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51
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52 /**
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53 * LIBAVUTIL_VERSION with which this structure was created.
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54 * This is used to allow fields to be added without requiring major
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55 * version bumps everywhere.
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56 */
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57
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58 int version;
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59 } AVClass;
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60
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61 /* av_log API */
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62
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63 #define AV_LOG_QUIET -8
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64
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65 /**
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66 * Something went really wrong and we will crash now.
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67 */
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68 #define AV_LOG_PANIC 0
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69
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70 /**
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71 * Something went wrong and recovery is not possible.
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72 * For example, no header was found for a format which depends
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73 * on headers or an illegal combination of parameters is used.
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74 */
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75 #define AV_LOG_FATAL 8
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76
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77 /**
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78 * Something went wrong and cannot losslessly be recovered.
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79 * However, not all future data is affected.
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80 */
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81 #define AV_LOG_ERROR 16
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82
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83 /**
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84 * Something somehow does not look correct. This may or may not
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85 * lead to problems. An example would be the use of '-vstrict -2'.
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86 */
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87 #define AV_LOG_WARNING 24
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88
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89 #define AV_LOG_INFO 32
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90 #define AV_LOG_VERBOSE 40
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91
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92 /**
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93 * Stuff which is only useful for libav* developers.
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94 */
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95 #define AV_LOG_DEBUG 48
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96
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97 /**
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98 * Sends the specified message to the log if the level is less than or equal
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99 * to the current av_log_level. By default, all logging messages are sent to
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100 * stderr. This behavior can be altered by setting a different av_vlog callback
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101 * function.
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102 *
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103 * @param avcl A pointer to an arbitrary struct of which the first field is a
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104 * pointer to an AVClass struct.
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105 * @param level The importance level of the message, lower values signifying
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106 * higher importance.
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107 * @param fmt The format string (printf-compatible) that specifies how
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108 * subsequent arguments are converted to output.
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109 * @see av_vlog
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110 */
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111
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112 void av_log(int level, const char *fmt, ...);
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113
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114 void av_vlog(int level, const char *fmt, va_list);
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115 int av_log_get_level(void);
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116 void av_log_set_level(int);
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117 void av_log_set_callback(void (*)(int, const char*, va_list));
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118 void av_log_default_callback(int level, const char* fmt, va_list vl);
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119
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120 #endif /* AVUTIL_LOG_H */
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