common/JackClientControl.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 __JackClientControl__
  22 #define __JackClientControl__
  23
  24 #include "JackShmMem.h"
  25 #include "JackPort.h"
  26 #include "JackSynchro.h"
  27 #include "JackNotification.h"
  28
  29 namespace Jack
  30 {
  31
  32 /*!
  33 \brief Client control possibly in shared memory.
  34 */
  35
  36 struct JackClientControl : public JackShmMemAble
  37 {
  38     char fName[JACK_CLIENT_NAME_SIZE + 1];
  39     bool fCallback[kMaxNotification];
  40     volatile jack_transport_state_t fTransportState;
  41     volatile bool fTransportSync;      /* Will be true when slow-sync cb has to be called */
  42     volatile bool fTransportTimebase;  /* Will be true when timebase cb is called with new_pos on */
  43     int fRefNum;
  44     int fPID;
  45     bool fActive;
  46
  47     JackClientControl(const char* name, int pid, int refnum)
  48     {
  49         Init(name, pid, refnum);
  50     }
  51
  52     JackClientControl(const char* name)
  53     {
  54         Init(name, 0, -1);
  55     }
  56
  57     JackClientControl()
  58     {
  59         Init("", 0, -1);
  60     }
  61
  62     void Init(const char* name, int pid, int refnum)
  63     {
  64         strcpy(fName, name);
  65         for (int i = 0; i < kMaxNotification; i++)
  66             fCallback[i] = false;
  67         // Always activated
  68         fCallback[kAddClient] = true;
  69         fCallback[kRemoveClient] = true;
  70         fCallback[kActivateClient] = true;
  71         // So that driver synchro are correctly setup in "flush" or "normal" mode
  72         fCallback[kStartFreewheelCallback] = true;
  73         fCallback[kStopFreewheelCallback] = true;
  74         fRefNum = refnum;
  75         fPID = pid;
  76         fTransportState = JackTransportStopped;
  77         fTransportSync = false;
  78         fTransportTimebase = false;
  79         fActive = false;
  80     }
  81
  82 } POST_PACKED_STRUCTURE;
  83
  84 } // end of namespace
  85
  86
  87 #endif