windows/JackWinNamedPipeNotifyChannel.cpp

   1 /*
   2  Copyright (C) 2004-2008 Grame
   3
   4  This program is free software; you can redistribute it and/or modify
   5  it under the terms of the GNU Lesser General Public License as published by
   6  the Free Software Foundation; either version 2.1 of the License, or
   7  (at your option) any later version.
   8
   9  This program is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  GNU Lesser General Public License for more details.
  13
  14  You should have received a copy of the GNU Lesser General Public License
  15  along with this program; if not, write to the Free Software
  16  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18  */
  19
  20
  21 #include "JackRequest.h"
  22 #include "JackWinNamedPipeNotifyChannel.h"
  23 #include "JackError.h"
  24 #include "JackConstants.h"
  25
  26 namespace Jack
  27 {
  28
  29 // Server to client
  30 int JackWinNamedPipeNotifyChannel::Open(const char* name)
  31 {
  32     jack_log("JackWinNamedPipeNotifyChannel::Open name = %s", name);
  33
  34     // Connect to client listen pipe
  35     if (fNotifyPipe.Connect(jack_client_dir, name, 0) < 0) {
  36         jack_error("Cannot connect client pipe");
  37         return -1;
  38     }
  39     // TODO : use a time out for notifications
  40     fNotifyPipe.SetReadTimeOut(SOCKET_TIME_OUT);
  41     return 0;
  42 }
  43
  44 void JackWinNamedPipeNotifyChannel::Close()
  45 {
  46     jack_log("JackWinNamedPipeNotifyChannel::Close");
  47     fNotifyPipe.Close();
  48 }
  49
  50 void JackWinNamedPipeNotifyChannel::ClientNotify(int refnum, const char* name, int notify, int sync, const char* message, int value1, int value2, int* result)
  51 {
  52     JackClientNotification event(name, refnum, notify, sync, message, value1, value2);
  53     JackResult res;
  54
  55     // Send notification
  56     if (event.Write(&fNotifyPipe) < 0) {
  57         jack_error("Could not write notification");
  58         fNotifyPipe.Close();
  59         *result = -1;
  60         return;
  61     }
  62
  63     // Read the result in "synchronous" mode only
  64     if (sync) {
  65         // Get result : use a time out
  66         if (res.Read(&fNotifyPipe) < 0) {
  67             jack_error("Could not read result");
  68             fNotifyPipe.Close();
  69             *result = -1;
  70         } else {
  71             *result = res.fResult;
  72         }
  73     } else {
  74         *result = 0;
  75     }
  76 }
  77
  78 } // end of namespace
  79
  80