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 void SigSession::start_capture(struct sr_dev_inst *sdi,
  61         uint64_t sample_rate)
  62 {
  63         sr_session_new();
  64         sr_session_datafeed_callback_add(dataFeedInProc);
  65
  66         if (sr_session_dev_add(sdi) != SR_OK) {
  67                 qDebug() << "Failed to use device.";
  68                 sr_session_destroy();
  69                 return;
  70         }
  71
  72         uint64_t limit_samples = 10000;
  73         if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES,
  74                 &limit_samples) != SR_OK) {
  75                 qDebug() << "Failed to configure time-based sample limit.";
  76                 sr_session_destroy();
  77                 return;
  78         }
  79
  80         if (sr_dev_config_set(sdi, SR_HWCAP_SAMPLERATE,
  81                 &sample_rate) != SR_OK) {
  82                 qDebug() << "Failed to configure samplerate.";
  83                 sr_session_destroy();
  84                 return;
  85         }
  86
  87         if (sr_session_start() != SR_OK) {
  88                 qDebug() << "Failed to start session.";
  89                 return;
  90         }
  91
  92         sr_session_run();
  93         sr_session_destroy();
  94 }
  95
  96 vector< shared_ptr<Signal> >& SigSession::get_signals()
  97 {
  98         return _signals;
  99 }
 100
 101 void SigSession::dataFeedIn(const struct sr_dev_inst *sdi,
 102         struct sr_datafeed_packet *packet)
 103 {
 104         assert(sdi);
 105         assert(packet);
 106
 107         switch (packet->type) {
 108         case SR_DF_HEADER:
 109                 _signals.clear();
 110                 break;
 111
 112         case SR_DF_META_LOGIC:
 113                 {
 114                         assert(packet->payload);
 115
 116                         const sr_datafeed_meta_logic &meta_logic =
 117                                 *(sr_datafeed_meta_logic*)packet->payload;
 118
 119                         // Create an empty LogiData for coming data snapshots
 120                         _logic_data.reset(new LogicData(meta_logic));
 121                         assert(_logic_data);
 122                         if(!_logic_data)
 123                                 break;
 124
 125                         // Add the signals
 126                         for (int i = 0; i < meta_logic.num_probes; i++)
 127                         {
 128                                 const sr_probe *const probe =
 129                                         (const sr_probe*)g_slist_nth_data(
 130                                                 sdi->probes, i);
 131                                 if(probe->enabled)
 132                                 {
 133                                         boost::shared_ptr<LogicSignal> signal(
 134                                                 new LogicSignal(probe->name,
 135                                                         _logic_data,
 136                                                         probe->index));
 137                                         _signals.push_back(signal);
 138                                 }
 139                         }
 140
 141                         break;
 142                 }
 143
 144         case SR_DF_LOGIC:
 145
 146                 assert(packet->payload);
 147                 if(!_cur_logic_snapshot)
 148                 {
 149                         // Create a new data snapshot
 150                         _cur_logic_snapshot = shared_ptr<LogicDataSnapshot>(
 151                                 new LogicDataSnapshot(
 152                                 *(sr_datafeed_logic*)packet->payload));
 153                         _logic_data->push_snapshot(_cur_logic_snapshot);
 154                 }
 155                 else
 156                 {
 157                         // Append to the existing data snapshot
 158                         _cur_logic_snapshot->append_payload(
 159                                 *(sr_datafeed_logic*)packet->payload);
 160                 }
 161
 162                 break;
 163
 164         case SR_DF_END:
 165                 _cur_logic_snapshot.reset();
 166                 dataUpdated();
 167                 break;
 168         }
 169 }
 170
 171 void SigSession::dataFeedInProc(const struct sr_dev_inst *sdi,
 172         struct sr_datafeed_packet *packet)
 173 {
 174         assert(session);
 175         session->dataFeedIn(sdi, packet);
 176 }