src/video_output/statistic.h

   1 /*****************************************************************************
   2  * statistic.c : vout statistic
   3  *****************************************************************************
   4  * Copyright (C) 2009 Laurent Aimar
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ 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 #if defined(__PLUGIN__) || defined(__BUILTIN__) || !defined(__LIBVLC__)
  25 # error This header file can only be included from LibVLC.
  26 #endif
  27
  28 #ifndef _VOUT_STATISTIC_H
  29 #define _VOUT_STATISTIC_H
  30
  31 typedef struct {
  32     vlc_spinlock_t spin;
  33
  34     int displayed;
  35     int lost;
  36 } vout_statistic_t;
  37
  38 static inline void vout_statistic_Init(vout_statistic_t *stat)
  39 {
  40     vlc_spin_init(&stat->spin);
  41 }
  42 static inline void vout_statistic_Clean(vout_statistic_t *stat)
  43 {
  44     vlc_spin_destroy(&stat->spin);
  45 }
  46 static inline void vout_statistic_GetReset(vout_statistic_t *stat, int *displayed, int *lost)
  47 {
  48     vlc_spin_lock(&stat->spin);
  49     *displayed = stat->displayed;
  50     *lost      = stat->lost;
  51
  52     stat->displayed = 0;
  53     stat->lost      = 0;
  54     vlc_spin_unlock(&stat->spin);
  55 }
  56 static inline void vout_statistic_Update(vout_statistic_t *stat, int displayed, int lost)
  57 {
  58     vlc_spin_lock(&stat->spin);
  59     stat->displayed += displayed;
  60     stat->lost      += lost;
  61     vlc_spin_unlock(&stat->spin);
  62 }
  63
  64 #endif
  65