research.m1stereo.tv/gitweb/ - melted/blob - src/framework/mlt_log.h

   1 /**
   2  * \file mlt_log.h
   3  * \brief logging functions
   4  *
   5  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
   6  *
   7  * This file was a part of FFmpeg.
   8  *
   9  * FFmpeg is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * FFmpeg is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with FFmpeg; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #ifndef MLT_LOG_H
  25 #define MLT_LOG_H
  26
  27 #include <stdarg.h>
  28
  29 #define MLT_LOG_QUIET    -8
  30
  31 /**
  32  * something went really wrong and we will crash now
  33  */
  34 #define MLT_LOG_PANIC     0
  35
  36 /**
  37  * something went wrong and recovery is not possible
  38  * like no header in a format which depends on it or a combination
  39  * of parameters which are not allowed
  40  */
  41 #define MLT_LOG_FATAL     8
  42
  43 /**
  44  * something went wrong and cannot losslessly be recovered
  45  * but not all future data is affected
  46  */
  47 #define MLT_LOG_ERROR    16
  48
  49 /**
  50  * something somehow does not look correct / something which may or may not
  51  * lead to some problems
  52  */
  53 #define MLT_LOG_WARNING  24
  54
  55 #define MLT_LOG_INFO     32
  56 #define MLT_LOG_VERBOSE  40
  57
  58 /**
  59  * stuff which is only useful for MLT developers
  60  */
  61 #define MLT_LOG_DEBUG    48
  62
  63 /**
  64  * Send the specified message to the log if the level is less than or equal to
  65  * the current logging level. By default, all logging messages are sent to
  66  * stderr. This behavior can be altered by setting a different mlt_vlog callback
  67  * function.
  68  *
  69  * \param service An optional pointer to a \p mlt_service_s.
  70  * \param level The importance level of the message, lower values signifying
  71  * higher importance.
  72  * \param fmt The format string (printf-compatible) that specifies how
  73  * subsequent arguments are converted to output.
  74  * \see mlt_vlog
  75  */
  76 #ifdef __GNUC__
  77 void mlt_log( void *service, int level, const char *fmt, ... ) __attribute__ ((__format__ (__printf__, 3, 4)));
  78 #else
  79 void mlt_log( void *service, int level, const char *fmt, ... );
  80 #endif
  81
  82 #define mlt_log_panic(service, format, args...) mlt_log((service), MLT_LOG_PANIC, (format), ## args)
  83 #define mlt_log_fatal(service, format, args...) mlt_log((service), MLT_LOG_FATAL, (format), ## args)
  84 #define mlt_log_error(service, format, args...) mlt_log((service), MLT_LOG_ERROR, (format), ## args)
  85 #define mlt_log_warning(service, format, args...) mlt_log((service), MLT_LOG_WARNING, (format), ## args)
  86 #define mlt_log_info(service, format, args...) mlt_log((service), MLT_LOG_INFO, (format), ## args)
  87 #define mlt_log_verbose(service, format, args...) mlt_log((service), MLT_LOG_VERBOSE, (format), ## args)
  88 #define mlt_log_debug(service, format, args...) mlt_log((service), MLT_LOG_DEBUG, (format), ## args)
  89
  90 void mlt_vlog( void *service, int level, const char *fmt, va_list );
  91 int mlt_log_get_level( void );
  92 void mlt_log_set_level( int );
  93 void mlt_log_set_callback( void (*)( void*, int, const char*, va_list ) );
  94
  95 #endif /* MLT_LOG_H */