git.sesse.net Git - vlc/blob - src/control/log.c

   1 /*****************************************************************************
   2  * log.c: libvlc new API log functions
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  *
   6  * $Id: core.c 14187 2006-02-07 16:37:40Z courmisch $
   7  *
   8  * Authors: Damien Fouilleul <damienf@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #include "libvlc_internal.h"
  26 #include <vlc/libvlc.h>
  27
  28 struct libvlc_log_t
  29 {
  30     const libvlc_instance_t  *p_instance;
  31     msg_subscription_t *p_messages;
  32 };
  33
  34 struct libvlc_log_iterator_t
  35 {
  36     msg_subscription_t *p_messages;
  37     int i_start;
  38     int i_pos;
  39     int i_end;
  40 };
  41
  42 unsigned libvlc_get_log_verbosity( const libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
  43 {
  44     if( p_instance )
  45     {
  46         return p_instance->p_libvlc_int->i_verbose;
  47     }
  48     RAISEZERO("Invalid VLC instance!");
  49 }
  50
  51 void libvlc_set_log_verbosity( libvlc_instance_t *p_instance, unsigned level, libvlc_exception_t *p_e )
  52 {
  53     if( p_instance )
  54     {
  55         p_instance->p_libvlc_int->i_verbose = level;
  56     }
  57     else
  58         RAISEVOID("Invalid VLC instance!");
  59 }
  60
  61 libvlc_log_t *libvlc_log_open( const libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
  62 {
  63
  64     struct libvlc_log_t *p_log =
  65         (struct libvlc_log_t *)malloc(sizeof(struct libvlc_log_t));
  66
  67     if( !p_log ) RAISENULL( "Out of memory" );
  68
  69     p_log->p_instance = p_instance;
  70     p_log->p_messages = msg_Subscribe(p_instance->p_libvlc_int, MSG_QUEUE_NORMAL);
  71
  72     if( !p_log->p_messages ) RAISENULL( "Out of memory" );
  73
  74     return p_log;
  75 }
  76
  77 void libvlc_log_close( libvlc_log_t *p_log, libvlc_exception_t *p_e )
  78 {
  79     if( p_log && p_log->p_messages )
  80     {
  81         msg_Unsubscribe(p_log->p_instance->p_libvlc_int, p_log->p_messages);
  82         free(p_log);
  83     }
  84     else
  85         RAISEVOID("Invalid log object!");
  86 }
  87
  88 unsigned libvlc_log_count( const libvlc_log_t *p_log, libvlc_exception_t *p_e )
  89 {
  90     if( p_log && p_log->p_messages )
  91     {
  92         int i_start = p_log->p_messages->i_start;
  93         int i_stop  = *(p_log->p_messages->pi_stop);
  94
  95         if( i_stop >= i_start )
  96             return i_stop-i_start;
  97         else
  98             return VLC_MSG_QSIZE-(i_start-i_stop);
  99     }
 100     RAISEZERO("Invalid log object!");
 101 }
 102
 103 void libvlc_log_clear( libvlc_log_t *p_log, libvlc_exception_t *p_e )
 104 {
 105     if( p_log && p_log->p_messages )
 106     {
 107         vlc_mutex_lock(p_log->p_messages->p_lock);
 108         p_log->p_messages->i_start = *(p_log->p_messages->pi_stop);
 109         vlc_mutex_unlock(p_log->p_messages->p_lock);
 110     }
 111     else
 112         RAISEVOID("Invalid log object!");
 113 }
 114
 115 libvlc_log_iterator_t *libvlc_log_get_iterator( const libvlc_log_t *p_log, libvlc_exception_t *p_e )
 116 {
 117     if( p_log && p_log->p_messages )
 118     {
 119         struct libvlc_log_iterator_t *p_iter =
 120             (struct libvlc_log_iterator_t *)malloc(sizeof(struct libvlc_log_iterator_t));
 121
 122         if( !p_iter ) RAISENULL( "Out of memory" );
 123
 124         vlc_mutex_lock(p_log->p_messages->p_lock);
 125         p_iter->p_messages = p_log->p_messages;
 126         p_iter->i_start    = p_log->p_messages->i_start;
 127         p_iter->i_pos      = p_log->p_messages->i_start;
 128         p_iter->i_end      = *(p_log->p_messages->pi_stop);
 129         vlc_mutex_unlock(p_log->p_messages->p_lock);
 130
 131         return p_iter;
 132     }
 133     RAISENULL("Invalid log object!");
 134 }
 135
 136 void libvlc_log_iterator_free( libvlc_log_iterator_t *p_iter, libvlc_exception_t *p_e )
 137 {
 138     if( p_iter )
 139     {
 140         free(p_iter);
 141     }
 142     else
 143         RAISEVOID("Invalid log iterator!");
 144 }
 145
 146 int libvlc_log_iterator_has_next( const libvlc_log_iterator_t *p_iter, libvlc_exception_t *p_e )
 147 {
 148     if( p_iter )
 149     {
 150         return p_iter->i_pos != p_iter->i_end;
 151     }
 152     RAISEZERO("Invalid log iterator!");
 153 }
 154
 155 libvlc_log_message_t *libvlc_log_iterator_next( libvlc_log_iterator_t *p_iter,
 156                                                 struct libvlc_log_message_t *buffer,
 157                                                 libvlc_exception_t *p_e )
 158 {
 159     if( p_iter )
 160     {
 161         if( buffer && (sizeof(struct libvlc_log_message_t) == buffer->sizeof_msg) )
 162         {
 163             int i_pos = p_iter->i_pos;
 164             if( i_pos != p_iter->i_end )
 165             {
 166                 msg_item_t *msg;
 167                 vlc_mutex_lock(p_iter->p_messages->p_lock);
 168                 msg = p_iter->p_messages->p_msg+i_pos;
 169                 buffer->i_severity  = msg->i_type;
 170                 buffer->psz_type    = msg_GetObjectTypeName(msg->i_object_type);
 171                 buffer->psz_name    = msg->psz_module;
 172                 buffer->psz_header  = msg->psz_header;
 173                 buffer->psz_message = msg->psz_msg;
 174                 p_iter->i_pos = ++i_pos % VLC_MSG_QSIZE;
 175                 vlc_mutex_unlock(p_iter->p_messages->p_lock);
 176
 177                 return buffer;
 178             }
 179             RAISENULL("No more messages");
 180         }
 181         RAISENULL("Invalid message buffer!");
 182     }
 183     RAISENULL("Invalid log iterator!");
 184 }
 185