sigsession.cpp

   1 /*
   2  * This file is part of the sigrok project.
   3  *
   4  * Copyright (C) 2012 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 "sigsession.h"
  22
  23 #include "logicdata.h"
  24 #include "logicdatasnapshot.h"
  25 #include "logicsignal.h"
  26
  27 #include <QDebug>
  28
  29 #include <assert.h>
  30
  31 using namespace boost;
  32 using namespace std;
  33
  34 // TODO: This should not be necessary
  35 SigSession* SigSession::session = NULL;
  36
  37 SigSession::SigSession()
  38 {
  39         // TODO: This should not be necessary
  40         session = this;
  41 }
  42
  43 SigSession::~SigSession()
  44 {
  45         // TODO: This should not be necessary
  46         session = NULL;
  47 }
  48
  49 void SigSession::loadFile(const std::string &name)
  50 {
  51         if (sr_session_load(name.c_str()) == SR_OK) {
  52                 /* sigrok session file */
  53                 sr_session_datafeed_callback_add(dataFeedInProc);
  54                 sr_session_start();
  55                 sr_session_run();
  56                 sr_session_stop();
  57         }
  58 }
  59
  60 vector< shared_ptr<Signal> >& SigSession::get_signals()
  61 {
  62         return _signals;
  63 }
  64
  65 void SigSession::dataFeedIn(const struct sr_dev_inst *sdi,
  66         struct sr_datafeed_packet *packet)
  67 {
  68         assert(sdi);
  69         assert(packet);
  70
  71         switch (packet->type) {
  72         case SR_DF_HEADER:
  73                 _signals.clear();
  74                 break;
  75
  76         case SR_DF_META_LOGIC:
  77                 {
  78                         assert(packet->payload);
  79
  80                         const sr_datafeed_meta_logic &meta_logic =
  81                                 *(sr_datafeed_meta_logic*)packet->payload;
  82
  83                         // Create an empty LogiData for coming data snapshots
  84                         _logic_data.reset(new LogicData(meta_logic));
  85                         assert(_logic_data);
  86                         if(!_logic_data)
  87                                 break;
  88
  89                         // Add the signals
  90                         for (int i = 0; i < meta_logic.num_probes; i++)
  91                         {
  92                                 const sr_probe *const probe =
  93                                         (const sr_probe*)g_slist_nth_data(
  94                                                 sdi->probes, i);
  95                                 if(probe->enabled)
  96                                 {
  97                                         boost::shared_ptr<LogicSignal> signal(
  98                                                 new LogicSignal(probe->name,
  99                                                         _logic_data,
 100                                                         probe->index));
 101                                         _signals.push_back(signal);
 102                                 }
 103                         }
 104
 105                         break;
 106                 }
 107
 108         case SR_DF_LOGIC:
 109
 110                 assert(packet->payload);
 111                 if(!_cur_logic_snapshot)
 112                 {
 113                         // Create a new data snapshot
 114                         _cur_logic_snapshot = shared_ptr<LogicDataSnapshot>(
 115                                 new LogicDataSnapshot(
 116                                 *(sr_datafeed_logic*)packet->payload));
 117                         _logic_data->push_snapshot(_cur_logic_snapshot);
 118                 }
 119                 else
 120                 {
 121                         // Append to the existing data snapshot
 122                         _cur_logic_snapshot->append_payload(
 123                                 *(sr_datafeed_logic*)packet->payload);
 124                 }
 125
 126                 break;
 127
 128         case SR_DF_END:
 129                 _cur_logic_snapshot.reset();
 130                 dataUpdated();
 131                 break;
 132         }
 133 }
 134
 135 void SigSession::dataFeedInProc(const struct sr_dev_inst *sdi,
 136         struct sr_datafeed_packet *packet)
 137 {
 138         assert(session);
 139         session->dataFeedIn(sdi, packet);
 140 }