pv/device/sessionfile.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2014 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include "sessionfile.h"
  22
  23 #include <libsigrok/libsigrok.h>
  24
  25 namespace pv {
  26 namespace device {
  27
  28 SessionFile::SessionFile(const std::string &path) :
  29         File(path),
  30         _sdi(NULL)
  31 {
  32 }
  33
  34 sr_dev_inst* SessionFile::dev_inst() const
  35 {
  36         return _sdi;
  37 }
  38
  39 void SessionFile::use(SigSession *owner) throw(QString)
  40 {
  41         assert(!_sdi);
  42
  43         if (sr_session_load(_path.c_str()) != SR_OK)
  44                 throw tr("Failed to open file.\n");
  45
  46         GSList *devlist = NULL;
  47         sr_session_dev_list(&devlist);
  48
  49         if (!devlist || !devlist->data) {
  50                 if (devlist)
  51                         g_slist_free(devlist);
  52                 throw tr("Failed to start session.");
  53         }
  54
  55         _sdi = (sr_dev_inst*)devlist->data;
  56         g_slist_free(devlist);
  57
  58         File::use(owner);
  59 }
  60
  61 void SessionFile::release()
  62 {
  63         if (!_owner)
  64                 return;
  65
  66         assert(_sdi);
  67         File::release();
  68         sr_dev_close(_sdi);
  69         sr_dev_clear(_sdi->driver);
  70         sr_session_destroy();
  71         _sdi = NULL;
  72 }
  73
  74 } // device
  75 } // pv