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

   1 /**
   2  * \file mlt_log.c
   3  * \brief logging functions
   4  *
   5  * Copyright (c) 2003 Michel Bardiaux
   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 #include "mlt_log.h"
  25 #include "mlt_service.h"
  26
  27 #include <string.h>
  28
  29 static int log_level = MLT_LOG_INFO;
  30
  31 void default_callback( void* ptr, int level, const char* fmt, va_list vl )
  32 {
  33         static int print_prefix = 1;
  34         mlt_properties properties = ptr ? MLT_SERVICE_PROPERTIES( ( mlt_service )ptr ) : NULL;
  35
  36         if ( level > log_level )
  37                 return;
  38         if ( print_prefix && properties )
  39         {
  40                 char *mlt_type = mlt_properties_get( properties, "mlt_type" );
  41                 char *resource = mlt_properties_get( properties, "resource" );
  42
  43                 if ( resource && *resource && resource[0] == '<' && resource[ strlen(resource) - 1 ] == '>' )
  44                         mlt_type = resource;
  45                 fprintf( stderr, "[%s @ %p]", mlt_type, ptr );
  46         }
  47         print_prefix = strstr( fmt, "\n" ) != NULL;
  48         vfprintf( stderr, fmt, vl );
  49 }
  50
  51 static void ( *callback )( void*, int, const char*, va_list ) = default_callback;
  52
  53 void mlt_log( void* service, int level, const char *fmt, ...)
  54 {
  55         va_list vl;
  56
  57         va_start( vl, fmt );
  58         mlt_vlog( service, level, fmt, vl );
  59         va_end( vl );
  60 }
  61
  62 void mlt_vlog( void* service, int level, const char *fmt, va_list vl )
  63 {
  64         if ( callback ) callback( service, level, fmt, vl );
  65 }
  66
  67 int mlt_log_get_level( void )
  68 {
  69         return log_level;
  70 }
  71
  72 void mlt_log_set_level( int level )
  73 {
  74         log_level = level;
  75 }
  76
  77 void mlt_log_set_callback( void (*new_callback)( void*, int, const char*, va_list ) )
  78 {
  79         callback = new_callback;
  80 }