pv/sigsession.cpp

   1 /*
   2  * This file is part of the PulseView 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 namespace pv {
  35
  36 // TODO: This should not be necessary
  37 SigSession* SigSession::_session = NULL;
  38
  39 SigSession::SigSession()
  40 {
  41         // TODO: This should not be necessary
  42         _session = this;
  43 }
  44
  45 SigSession::~SigSession()
  46 {
  47         // TODO: This should not be necessary
  48         _session = NULL;
  49 }
  50
  51 void SigSession::load_file(const std::string &name)
  52 {
  53         if (sr_session_load(name.c_str()) == SR_OK) {
  54                 /* sigrok session file */
  55                 sr_session_datafeed_callback_add(data_feed_in_proc);
  56                 sr_session_start();
  57                 sr_session_run();
  58                 sr_session_stop();
  59         }
  60 }
  61
  62 void SigSession::start_capture(struct sr_dev_inst *sdi,
  63         uint64_t record_length, uint64_t sample_rate)
  64 {
  65         sr_session_new();
  66         sr_session_datafeed_callback_add(data_feed_in_proc);
  67
  68         if (sr_session_dev_add(sdi) != SR_OK) {
  69                 qDebug() << "Failed to use device.";
  70                 sr_session_destroy();
  71                 return;
  72         }
  73
  74         if (sr_dev_config_set(sdi, SR_HWCAP_LIMIT_SAMPLES,
  75                 &record_length) != SR_OK) {
  76                 qDebug() << "Failed to configure time-based sample limit.";
  77                 sr_session_destroy();
  78                 return;
  79         }
  80
  81         if (sr_dev_config_set(sdi, SR_HWCAP_SAMPLERATE,
  82                 &sample_rate) != SR_OK) {
  83                 qDebug() << "Failed to configure samplerate.";
  84                 sr_session_destroy();
  85                 return;
  86         }
  87
  88         if (sr_session_start() != SR_OK) {
  89                 qDebug() << "Failed to start session.";
  90                 return;
  91         }
  92
  93         sr_session_run();
  94         sr_session_destroy();
  95 }
  96
  97 vector< shared_ptr<Signal> >& SigSession::get_signals()
  98 {
  99         return _signals;
 100 }
 101
 102 boost::shared_ptr<LogicData> SigSession::get_data()
 103 {
 104         return _logic_data;
 105 }
 106
 107 void SigSession::data_feed_in(const struct sr_dev_inst *sdi,
 108         struct sr_datafeed_packet *packet)
 109 {
 110         assert(sdi);
 111         assert(packet);
 112
 113         switch (packet->type) {
 114         case SR_DF_HEADER:
 115                 _signals.clear();
 116                 break;
 117
 118         case SR_DF_META_LOGIC:
 119                 {
 120                         assert(packet->payload);
 121
 122                         const sr_datafeed_meta_logic &meta_logic =
 123                                 *(sr_datafeed_meta_logic*)packet->payload;
 124
 125                         // Create an empty LogiData for coming data snapshots
 126                         _logic_data.reset(new LogicData(meta_logic));
 127                         assert(_logic_data);
 128                         if(!_logic_data)
 129                                 break;
 130
 131                         // Add the signals
 132                         for (int i = 0; i < meta_logic.num_probes; i++)
 133                         {
 134                                 const sr_probe *const probe =
 135                                         (const sr_probe*)g_slist_nth_data(
 136                                                 sdi->probes, i);
 137                                 if(probe->enabled)
 138                                 {
 139                                         boost::shared_ptr<LogicSignal> signal(
 140                                                 new LogicSignal(probe->name,
 141                                                         _logic_data,
 142                                                         probe->index));
 143                                         _signals.push_back(signal);
 144                                 }
 145                         }
 146
 147                         break;
 148                 }
 149
 150         case SR_DF_LOGIC:
 151
 152                 assert(packet->payload);
 153                 if(!_cur_logic_snapshot)
 154                 {
 155                         // Create a new data snapshot
 156                         _cur_logic_snapshot = shared_ptr<LogicDataSnapshot>(
 157                                 new LogicDataSnapshot(
 158                                 *(sr_datafeed_logic*)packet->payload));
 159                         _logic_data->push_snapshot(_cur_logic_snapshot);
 160                 }
 161                 else
 162                 {
 163                         // Append to the existing data snapshot
 164                         _cur_logic_snapshot->append_payload(
 165                                 *(sr_datafeed_logic*)packet->payload);
 166                 }
 167
 168                 break;
 169
 170         case SR_DF_END:
 171                 _cur_logic_snapshot.reset();
 172                 data_updated();
 173                 break;
 174         }
 175 }
 176
 177 void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi,
 178         struct sr_datafeed_packet *packet)
 179 {
 180         assert(_session);
 181         _session->data_feed_in(sdi, packet);
 182 }
 183
 184 } // namespace pv