common/JackEngineTiming.h

   1 /*
   2 Copyright (C) 2003 Paul Davis
   3 Copyright (C) 2004-2008 Grame
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19 */
  20
  21 #ifndef __JackEngineTiming__
  22 #define __JackEngineTiming__
  23
  24 #include "types.h"
  25 #include "JackTypes.h"
  26 #include "JackConstants.h"
  27
  28 namespace Jack
  29 {
  30
  31 #define TIME_POINTS 1000
  32
  33 /*!
  34 \brief Timing stucture for a client.
  35 */
  36
  37 struct JackTimingMeasureClient
  38 {
  39     int fRefNum;
  40     jack_time_t fSignaledAt;
  41     jack_time_t fAwakeAt;
  42     jack_time_t fFinishedAt;
  43     jack_client_state_t fStatus;
  44 };
  45
  46 /*!
  47 \brief Timing stucture for a table of clients.
  48 */
  49
  50 struct JackTimingMeasure
  51 {
  52     unsigned int fAudioCycle;
  53     jack_time_t fEngineTime;
  54     JackTimingMeasureClient fClientTable[CLIENT_NUM];
  55 };
  56
  57 /*!
  58 \brief Client timing.
  59 */
  60
  61 class JackClientInterface;
  62 class JackGraphManager;
  63
  64 class  JackEngineTiming
  65 {
  66
  67     private:
  68
  69         JackTimingMeasure fMeasure[TIME_POINTS];
  70         unsigned int fAudioCycle;
  71         jack_time_t fPrevCycleTime;
  72         jack_time_t fCurCycleTime;
  73
  74     public:
  75
  76         JackEngineTiming():fAudioCycle(0),fPrevCycleTime(0),fCurCycleTime(0)
  77         {}
  78         ~JackEngineTiming()
  79         {}
  80
  81         void GetTimeMeasure(JackClientInterface** table, JackGraphManager* manager, jack_time_t cur_cycle_begin, jack_time_t prev_cycle_end);
  82         void ClearTimeMeasures();
  83 };
  84
  85 } // end of namespace
  86
  87 #endif