git.sesse.net Git - vlc/blob - src/misc/stats.c

   1 /*****************************************************************************
   2  * stats.c: Statistics handling
   3  *****************************************************************************
   4  * Copyright (C) 2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program 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
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc/vlc.h>
  33 #include <stdio.h>                                               /* required */
  34
  35 #include "input/input_internal.h"
  36
  37 /*****************************************************************************
  38  * Local prototypes
  39  *****************************************************************************/
  40 static int CounterUpdate( vlc_object_t *p_this,
  41                           counter_t *p_counter,
  42                           vlc_value_t val, vlc_value_t * );
  43 static void TimerDump( vlc_object_t *p_this, counter_t *p_counter, bool);
  44
  45 /*****************************************************************************
  46  * Exported functions
  47  *****************************************************************************/
  48
  49 /**
  50  * Create a statistics counter
  51  * \param p_this a VLC object
  52  * \param i_type the type of stored data. One of VLC_VAR_STRING,
  53  * VLC_VAR_INTEGER, VLC_VAR_FLOAT
  54  * \param i_compute_type the aggregation type. One of STATS_LAST (always
  55  * keep the last value), STATS_COUNTER (increment by the passed value),
  56  * STATS_MAX (keep the maximum passed value), STATS_MIN, or STATS_DERIVATIVE
  57  * (keep a time derivative of the value)
  58  */
  59 counter_t * __stats_CounterCreate( vlc_object_t *p_this,
  60                                    int i_type, int i_compute_type )
  61 {
  62     counter_t *p_counter = (counter_t*) malloc( sizeof( counter_t ) ) ;
  63     (void)p_this;
  64
  65     if( !p_counter ) return NULL;
  66     p_counter->i_compute_type = i_compute_type;
  67     p_counter->i_type = i_type;
  68     p_counter->i_samples = 0;
  69     p_counter->pp_samples = NULL;
  70     p_counter->psz_name = NULL;
  71
  72     p_counter->update_interval = 0;
  73     p_counter->last_update = 0;
  74
  75     return p_counter;
  76 }
  77
  78 /** Update a counter element with new values
  79  * \param p_this a VLC object
  80  * \param p_counter the counter to update
  81  * \param val the vlc_value union containing the new value to aggregate. For
  82  * more information on how data is aggregated, \see __stats_Create
  83  * \param val_new a pointer that will be filled with new data
  84  */
  85 int __stats_Update( vlc_object_t *p_this, counter_t *p_counter,
  86                     vlc_value_t val, vlc_value_t *val_new )
  87 {
  88     if( !libvlc_stats (p_this) || !p_counter ) return VLC_EGENERIC;
  89     return CounterUpdate( p_this, p_counter, val, val_new );
  90 }
  91
  92 /** Get the aggregated value for a counter
  93  * \param p_this an object
  94  * \param p_counter the counter
  95  * \param val a pointer to an initialized vlc_value union. It will contain the
  96  * retrieved value
  97  * \return an error code
  98  */
  99 int __stats_Get( vlc_object_t *p_this, counter_t *p_counter, vlc_value_t *val )
 100 {
 101     if( !libvlc_stats (p_this) || !p_counter || p_counter->i_samples == 0 )
 102     {
 103         val->i_int = val->f_float = 0.0;
 104         return VLC_EGENERIC;
 105     }
 106
 107     switch( p_counter->i_compute_type )
 108     {
 109     case STATS_LAST:
 110     case STATS_MIN:
 111     case STATS_MAX:
 112     case STATS_COUNTER:
 113         *val = p_counter->pp_samples[0]->value;
 114         break;
 115     case STATS_DERIVATIVE:
 116         /* Not ready yet */
 117         if( p_counter->i_samples < 2 )
 118         {
 119             val->i_int = 0; val->f_float = 0.0;
 120             return VLC_EGENERIC;
 121         }
 122         if( p_counter->i_type == VLC_VAR_INTEGER )
 123         {
 124             float f = ( p_counter->pp_samples[0]->value.i_int -
 125                         p_counter->pp_samples[1]->value.i_int ) /
 126                     (float)(  p_counter->pp_samples[0]->date -
 127                               p_counter->pp_samples[1]->date );
 128             val->i_int = (int)f;
 129         }
 130         else
 131         {
 132             float f = (float)( p_counter->pp_samples[0]->value.f_float -
 133                                p_counter->pp_samples[1]->value.f_float ) /
 134                       (float)( p_counter->pp_samples[0]->date -
 135                                p_counter->pp_samples[1]->date );
 136             val->f_float = f;
 137         }
 138         break;
 139     }
 140     return VLC_SUCCESS;;
 141 }
 142
 143 input_stats_t *stats_NewInputStats( input_thread_t *p_input )
 144 {
 145     (void)p_input;
 146     input_stats_t *p_stats = malloc( sizeof(input_stats_t) );
 147
 148     if( !p_stats )
 149         return NULL;
 150
 151     memset( p_stats, 0, sizeof(*p_stats) );
 152     vlc_mutex_init( &p_stats->lock );
 153     stats_ReinitInputStats( p_stats );
 154
 155     return p_stats;
 156 }
 157
 158 void stats_ComputeInputStats( input_thread_t *p_input, input_stats_t *p_stats )
 159 {
 160     if( !libvlc_stats (p_input) ) return;
 161
 162     vlc_mutex_lock( &p_input->p->counters.counters_lock );
 163     vlc_mutex_lock( &p_stats->lock );
 164
 165     /* Input */
 166     stats_GetInteger( p_input, p_input->p->counters.p_read_packets,
 167                       &p_stats->i_read_packets );
 168     stats_GetInteger( p_input, p_input->p->counters.p_read_bytes,
 169                       &p_stats->i_read_bytes );
 170     stats_GetFloat( p_input, p_input->p->counters.p_input_bitrate,
 171                     &p_stats->f_input_bitrate );
 172     stats_GetInteger( p_input, p_input->p->counters.p_demux_read,
 173                       &p_stats->i_demux_read_bytes );
 174     stats_GetFloat( p_input, p_input->p->counters.p_demux_bitrate,
 175                     &p_stats->f_demux_bitrate );
 176
 177     /* Decoders */
 178     stats_GetInteger( p_input, p_input->p->counters.p_decoded_video,
 179                       &p_stats->i_decoded_video );
 180     stats_GetInteger( p_input, p_input->p->counters.p_decoded_audio,
 181                       &p_stats->i_decoded_audio );
 182
 183     /* Sout */
 184     if( p_input->p->counters.p_sout_send_bitrate )
 185     {
 186         stats_GetInteger( p_input, p_input->p->counters.p_sout_sent_packets,
 187                           &p_stats->i_sent_packets );
 188         stats_GetInteger( p_input, p_input->p->counters.p_sout_sent_bytes,
 189                           &p_stats->i_sent_bytes );
 190         stats_GetFloat  ( p_input, p_input->p->counters.p_sout_send_bitrate,
 191                           &p_stats->f_send_bitrate );
 192     }
 193
 194     /* Aout */
 195     stats_GetInteger( p_input, p_input->p->counters.p_played_abuffers,
 196                       &p_stats->i_played_abuffers );
 197     stats_GetInteger( p_input, p_input->p->counters.p_lost_abuffers,
 198                       &p_stats->i_lost_abuffers );
 199
 200     /* Vouts */
 201     stats_GetInteger( p_input, p_input->p->counters.p_displayed_pictures,
 202                       &p_stats->i_displayed_pictures );
 203     stats_GetInteger( p_input, p_input->p->counters.p_lost_pictures,
 204                       &p_stats->i_lost_pictures );
 205
 206     vlc_mutex_unlock( &p_stats->lock );
 207     vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 208 }
 209
 210 void stats_ReinitInputStats( input_stats_t *p_stats )
 211 {
 212     vlc_mutex_lock( &p_stats->lock );
 213     p_stats->i_read_packets = p_stats->i_read_bytes =
 214     p_stats->f_input_bitrate = p_stats->f_average_input_bitrate =
 215     p_stats->i_demux_read_packets = p_stats->i_demux_read_bytes =
 216     p_stats->f_demux_bitrate = p_stats->f_average_demux_bitrate =
 217     p_stats->i_displayed_pictures = p_stats->i_lost_pictures =
 218     p_stats->i_played_abuffers = p_stats->i_lost_abuffers =
 219     p_stats->i_decoded_video = p_stats->i_decoded_audio =
 220     p_stats->i_sent_bytes = p_stats->i_sent_packets = p_stats->f_send_bitrate
 221      = 0;
 222     vlc_mutex_unlock( &p_stats->lock );
 223 }
 224
 225 void stats_DumpInputStats( input_stats_t *p_stats  )
 226 {
 227     vlc_mutex_lock( &p_stats->lock );
 228     /* f_bitrate is in bytes / microsecond
 229      * *1000 => bytes / millisecond => kbytes / seconds */
 230     fprintf( stderr, "Input : %i (%i bytes) - %f kB/s - "
 231                      "Demux : %i (%i bytes) - %f kB/s\n"
 232                      " - Vout : %i/%i - Aout : %i/%i - Sout : %f\n",
 233                     p_stats->i_read_packets, p_stats->i_read_bytes,
 234                     p_stats->f_input_bitrate * 1000,
 235                     p_stats->i_demux_read_packets, p_stats->i_demux_read_bytes,
 236                     p_stats->f_demux_bitrate * 1000,
 237                     p_stats->i_displayed_pictures, p_stats->i_lost_pictures,
 238                     p_stats->i_played_abuffers, p_stats->i_lost_abuffers,
 239                     p_stats->f_send_bitrate );
 240     vlc_mutex_unlock( &p_stats->lock );
 241 }
 242
 243 void __stats_ComputeGlobalStats( vlc_object_t *p_obj, global_stats_t *p_stats )
 244 {
 245     vlc_list_t *p_list;
 246     int i_index;
 247
 248     if( !libvlc_stats (p_obj) ) return;
 249
 250     vlc_mutex_lock( &p_stats->lock );
 251
 252     p_list = vlc_list_find( p_obj, VLC_OBJECT_INPUT, FIND_ANYWHERE );
 253     if( p_list )
 254     {
 255         float f_total_in = 0, f_total_out = 0,f_total_demux = 0;
 256         for( i_index = 0; i_index < p_list->i_count ; i_index ++ )
 257         {
 258             float f_in = 0, f_out = 0, f_demux = 0;
 259             input_thread_t *p_input = (input_thread_t *)
 260                              p_list->p_values[i_index].p_object;
 261             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 262             stats_GetFloat( p_obj, p_input->p->counters.p_input_bitrate, &f_in );
 263             if( p_input->p->counters.p_sout_send_bitrate )
 264                 stats_GetFloat( p_obj, p_input->p->counters.p_sout_send_bitrate,
 265                                     &f_out );
 266             stats_GetFloat( p_obj, p_input->p->counters.p_demux_bitrate,
 267                                 &f_demux );
 268             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 269             f_total_in += f_in; f_total_out += f_out;f_total_demux += f_demux;
 270         }
 271         p_stats->f_input_bitrate = f_total_in;
 272         p_stats->f_output_bitrate = f_total_out;
 273         p_stats->f_demux_bitrate = f_total_demux;
 274         vlc_list_release( p_list );
 275     }
 276
 277     vlc_mutex_unlock( &p_stats->lock );
 278 }
 279
 280 void __stats_TimerStart( vlc_object_t *p_obj, const char *psz_name,
 281                          unsigned int i_id )
 282 {
 283     libvlc_priv_t *priv = libvlc_priv (p_obj->p_libvlc);
 284     counter_t *p_counter = NULL;
 285
 286     if( !priv->b_stats ) return;
 287
 288     vlc_mutex_lock( &priv->timer_lock );
 289
 290     for( int i = 0 ; i < priv->i_timers; i++ )
 291     {
 292         if( priv->pp_timers[i]->i_id == i_id
 293             && priv->pp_timers[i]->p_obj == p_obj )
 294         {
 295             p_counter = priv->pp_timers[i];
 296             break;
 297         }
 298     }
 299     if( !p_counter )
 300     {
 301         counter_sample_t *p_sample;
 302         p_counter = stats_CounterCreate( p_obj->p_libvlc, VLC_VAR_TIME,
 303                                          STATS_TIMER );
 304         if( !p_counter )
 305             goto out;
 306         p_counter->psz_name = strdup( psz_name );
 307         p_counter->i_id = i_id;
 308         p_counter->p_obj = p_obj;
 309         INSERT_ELEM( priv->pp_timers, priv->i_timers,
 310                      priv->i_timers, p_counter );
 311
 312         /* 1st sample : if started: start_date, else last_time, b_started */
 313         p_sample = (counter_sample_t *)malloc( sizeof( counter_sample_t ) );
 314         INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 315                      p_counter->i_samples, p_sample );
 316         p_sample->date = 0; p_sample->value.b_bool = 0;
 317         /* 2nd sample : global_time, i_samples */
 318         p_sample = (counter_sample_t *)malloc( sizeof( counter_sample_t ) );
 319         INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 320                      p_counter->i_samples, p_sample );
 321         p_sample->date = 0; p_sample->value.i_int = 0;
 322     }
 323     if( p_counter->pp_samples[0]->value.b_bool == true )
 324     {
 325         msg_Warn( p_obj, "timer '%s' was already started !", psz_name );
 326         goto out;
 327     }
 328     p_counter->pp_samples[0]->value.b_bool = true;
 329     p_counter->pp_samples[0]->date = mdate();
 330 out:
 331     vlc_mutex_unlock( &priv->timer_lock );
 332 }
 333
 334 void __stats_TimerStop( vlc_object_t *p_obj, unsigned int i_id )
 335 {
 336     counter_t *p_counter = NULL;
 337     libvlc_priv_t *priv = libvlc_priv (p_obj->p_libvlc);
 338
 339     if( !priv->b_stats ) return;
 340     vlc_mutex_lock( &priv->timer_lock );
 341     for( int i = 0 ; i < priv->i_timers; i++ )
 342     {
 343         if( priv->pp_timers[i]->i_id == i_id
 344             && priv->pp_timers[i]->p_obj == p_obj )
 345         {
 346             p_counter = priv->pp_timers[i];
 347             break;
 348         }
 349     }
 350     if( !p_counter || p_counter->i_samples != 2 )
 351     {
 352         msg_Err( p_obj, "timer does not exist" );
 353         goto out;
 354     }
 355     p_counter->pp_samples[0]->value.b_bool = false;
 356     p_counter->pp_samples[1]->value.i_int += 1;
 357     p_counter->pp_samples[0]->date = mdate() - p_counter->pp_samples[0]->date;
 358     p_counter->pp_samples[1]->date += p_counter->pp_samples[0]->date;
 359 out:
 360     vlc_mutex_unlock( &priv->timer_lock );
 361 }
 362
 363 void __stats_TimerDump( vlc_object_t *p_obj, unsigned int i_id )
 364 {
 365     counter_t *p_counter = NULL;
 366     libvlc_priv_t *priv = libvlc_priv (p_obj->p_libvlc);
 367
 368     if( !priv->b_stats ) return;
 369     vlc_mutex_lock( &priv->timer_lock );
 370     for( int i = 0 ; i < priv->i_timers; i++ )
 371     {
 372         if( priv->pp_timers[i]->i_id == i_id
 373             && priv->pp_timers[i]->p_obj == p_obj )
 374         {
 375             p_counter = priv->pp_timers[i];
 376             break;
 377         }
 378     }
 379     TimerDump( p_obj, p_counter, true );
 380     vlc_mutex_unlock( &priv->timer_lock );
 381 }
 382
 383 void __stats_TimersDumpAll( vlc_object_t *p_obj )
 384 {
 385     libvlc_priv_t *priv = libvlc_priv (p_obj->p_libvlc);
 386
 387     if( !priv->b_stats ) return;
 388     vlc_mutex_lock( &priv->timer_lock );
 389     for ( int i = 0 ; i < priv->i_timers ; i++ )
 390         TimerDump( p_obj, priv->pp_timers[i], false );
 391     vlc_mutex_unlock( &priv->timer_lock );
 392 }
 393
 394 void __stats_TimerClean( vlc_object_t *p_obj, unsigned int i_id )
 395 {
 396     libvlc_priv_t *priv = libvlc_priv (p_obj->p_libvlc);
 397
 398     vlc_mutex_lock( &priv->timer_lock );
 399     for ( int i = priv->i_timers -1 ; i >= 0; i-- )
 400     {
 401         counter_t *p_counter = priv->pp_timers[i];
 402         if( p_counter->i_id == i_id && p_counter->p_obj == p_obj )
 403         {
 404             REMOVE_ELEM( priv->pp_timers, priv->i_timers, i );
 405             stats_CounterClean( p_counter );
 406         }
 407     }
 408     vlc_mutex_unlock( &priv->timer_lock );
 409 }
 410
 411 void __stats_TimersCleanAll( vlc_object_t *p_obj )
 412 {
 413     libvlc_priv_t *priv = libvlc_priv (p_obj->p_libvlc);
 414
 415     vlc_mutex_lock( &priv->timer_lock );
 416     for ( int i = priv->i_timers -1 ; i >= 0; i-- )
 417     {
 418         counter_t *p_counter = priv->pp_timers[i];
 419         REMOVE_ELEM( priv->pp_timers, priv->i_timers, i );
 420         stats_CounterClean( p_counter );
 421     }
 422     vlc_mutex_unlock( &priv->timer_lock );
 423 }
 424
 425 void stats_CounterClean( counter_t *p_c )
 426 {
 427     if( p_c )
 428     {
 429         int i = p_c->i_samples - 1 ;
 430         while( i >= 0 )
 431         {
 432             counter_sample_t *p_s = p_c->pp_samples[i];
 433             REMOVE_ELEM( p_c->pp_samples, p_c->i_samples, i );
 434             free( p_s );
 435             i--;
 436         }
 437         free( p_c->psz_name );
 438         free( p_c );
 439     }
 440 }
 441
 442
 443 /********************************************************************
 444  * Following functions are local
 445  ********************************************************************/
 446
 447 /**
 448  * Update a statistics counter, according to its type
 449  * If needed, perform a bit of computation (derivative, mostly)
 450  * This function must be entered with stats handler lock
 451  * \param p_counter the counter to update
 452  * \param val the "new" value
 453  * \return an error code
 454  */
 455 static int CounterUpdate( vlc_object_t *p_handler,
 456                           counter_t *p_counter,
 457                           vlc_value_t val, vlc_value_t *new_val )
 458 {
 459     switch( p_counter->i_compute_type )
 460     {
 461     case STATS_LAST:
 462     case STATS_MIN:
 463     case STATS_MAX:
 464         if( p_counter->i_samples > 1)
 465         {
 466             msg_Err( p_handler, "LAST counter has several samples !" );
 467             return VLC_EGENERIC;
 468         }
 469         if( p_counter->i_type != VLC_VAR_FLOAT &&
 470             p_counter->i_type != VLC_VAR_INTEGER &&
 471             p_counter->i_compute_type != STATS_LAST )
 472         {
 473             msg_Err( p_handler, "unable to compute MIN or MAX for this type");
 474             return VLC_EGENERIC;
 475         }
 476
 477         if( p_counter->i_samples == 0 )
 478         {
 479             counter_sample_t *p_new = (counter_sample_t*)malloc(
 480                                                sizeof( counter_sample_t ) );
 481             p_new->value.psz_string = NULL;
 482
 483             INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 484                          p_counter->i_samples, p_new );
 485         }
 486         if( p_counter->i_samples == 1 )
 487         {
 488             /* Update if : LAST or (MAX and bigger) or (MIN and bigger) */
 489             if( p_counter->i_compute_type == STATS_LAST ||
 490                 ( p_counter->i_compute_type == STATS_MAX &&
 491                    ( ( p_counter->i_type == VLC_VAR_INTEGER &&
 492                        p_counter->pp_samples[0]->value.i_int > val.i_int ) ||
 493                      ( p_counter->i_type == VLC_VAR_FLOAT &&
 494                        p_counter->pp_samples[0]->value.f_float > val.f_float )
 495                    ) ) ||
 496                 ( p_counter->i_compute_type == STATS_MIN &&
 497                    ( ( p_counter->i_type == VLC_VAR_INTEGER &&
 498                        p_counter->pp_samples[0]->value.i_int < val.i_int ) ||
 499                      ( p_counter->i_type == VLC_VAR_FLOAT &&
 500                        p_counter->pp_samples[0]->value.f_float < val.f_float )
 501                    ) ) )
 502             {
 503                 if( p_counter->i_type == VLC_VAR_STRING &&
 504                     p_counter->pp_samples[0]->value.psz_string )
 505                 {
 506                     free( p_counter->pp_samples[0]->value.psz_string );
 507                 }
 508                 p_counter->pp_samples[0]->value = val;
 509                 *new_val = p_counter->pp_samples[0]->value;
 510             }
 511         }
 512         break;
 513     case STATS_DERIVATIVE:
 514     {
 515         counter_sample_t *p_new, *p_old;
 516         if( mdate() - p_counter->last_update < p_counter->update_interval )
 517         {
 518             return VLC_EGENERIC;
 519         }
 520         p_counter->last_update = mdate();
 521         if( p_counter->i_type != VLC_VAR_FLOAT &&
 522             p_counter->i_type != VLC_VAR_INTEGER )
 523         {
 524             msg_Err( p_handler, "Unable to compute DERIVATIVE for this type");
 525             return VLC_EGENERIC;
 526         }
 527         /* Insert the new one at the beginning */
 528         p_new = (counter_sample_t*)malloc( sizeof( counter_sample_t ) );
 529         p_new->value = val;
 530         p_new->date = p_counter->last_update;
 531         INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 532                      0, p_new );
 533
 534         if( p_counter->i_samples == 3 )
 535         {
 536             p_old = p_counter->pp_samples[2];
 537             REMOVE_ELEM( p_counter->pp_samples, p_counter->i_samples, 2 );
 538             free( p_old );
 539         }
 540         break;
 541     }
 542     case STATS_COUNTER:
 543         if( p_counter->i_samples > 1)
 544         {
 545             msg_Err( p_handler, "LAST counter has several samples !" );
 546             return VLC_EGENERIC;
 547         }
 548         if( p_counter->i_samples == 0 )
 549         {
 550             counter_sample_t *p_new = (counter_sample_t*)malloc(
 551                                                sizeof( counter_sample_t ) );
 552             p_new->value.psz_string = NULL;
 553
 554             INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 555                          p_counter->i_samples, p_new );
 556         }
 557         if( p_counter->i_samples == 1 )
 558         {
 559             switch( p_counter->i_type )
 560             {
 561             case VLC_VAR_INTEGER:
 562                 p_counter->pp_samples[0]->value.i_int += val.i_int;
 563                 if( new_val )
 564                     new_val->i_int = p_counter->pp_samples[0]->value.i_int;
 565                 break;
 566             case VLC_VAR_FLOAT:
 567                 p_counter->pp_samples[0]->value.f_float += val.f_float;
 568                 if( new_val )
 569                     new_val->f_float = p_counter->pp_samples[0]->value.f_float;
 570             default:
 571                 msg_Err( p_handler, "Trying to increment invalid variable %s",
 572                          p_counter->psz_name );
 573                 return VLC_EGENERIC;
 574             }
 575         }
 576         break;
 577     }
 578     return VLC_SUCCESS;
 579 }
 580
 581 static void TimerDump( vlc_object_t *p_obj, counter_t *p_counter,
 582                        bool b_total )
 583 {
 584     if( !p_counter )
 585         return;
 586
 587     mtime_t last, total;
 588     int i_total;
 589     if( p_counter->i_samples != 2 )
 590     {
 591         msg_Err( p_obj, "timer %s does not exist", p_counter->psz_name );
 592         return;
 593     }
 594     i_total = p_counter->pp_samples[1]->value.i_int;
 595     total = p_counter->pp_samples[1]->date;
 596     if( p_counter->pp_samples[0]->value.b_bool == true )
 597     {
 598         last = mdate() - p_counter->pp_samples[0]->date;
 599         i_total += 1;
 600         total += last;
 601     }
 602     else
 603     {
 604         last = p_counter->pp_samples[0]->date;
 605     }
 606     if( b_total )
 607     {
 608         msg_Dbg( p_obj,
 609              "TIMER %s : %.3f ms - Total %.3f ms / %i intvls (Avg %.3f ms)",
 610              p_counter->psz_name, (float)last/1000, (float)total/1000, i_total,
 611              (float)(total)/(1000*(float)i_total ) );
 612     }
 613     else
 614     {
 615         msg_Dbg( p_obj,
 616              "TIMER %s : Total %.3f ms / %i intvls (Avg %.3f ms)",
 617              p_counter->psz_name, (float)total/1000, i_total,
 618              (float)(total)/(1000*(float)i_total ) );
 619     }
 620 }