pv/samplingbar.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 <assert.h>
  22
  23 #include <boost/foreach.hpp>
  24
  25 extern "C" {
  26 #include <libsigrok/libsigrok.h>
  27 }
  28
  29 #include <QAction>
  30
  31 #include "samplingbar.h"
  32
  33 namespace pv {
  34
  35 const uint64_t SamplingBar::RecordLengths[11] = {
  36         1000000,
  37         2000000,
  38         5000000,
  39         10000000,
  40         25000000,
  41         50000000,
  42         100000000,
  43         250000000,
  44         500000000,
  45         1000000000,
  46         10000000000
  47 };
  48
  49 SamplingBar::SamplingBar(QWidget *parent) :
  50         QToolBar("Sampling Bar", parent),
  51         _device_selector(this),
  52         _record_length_selector(this),
  53         _sample_rate_list(this),
  54         _run_stop_button(this)
  55 {
  56         connect(&_run_stop_button, SIGNAL(clicked()), this, SIGNAL(run_stop()));
  57         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  58                 this, SLOT(on_device_selected()));
  59
  60         _sample_rate_value.setDecimals(0);
  61         _sample_rate_value.setSuffix("Hz");
  62
  63         BOOST_FOREACH(uint64_t l, RecordLengths)
  64         {
  65                 char *const text = sr_si_string_u64(l, " samples");
  66                 _record_length_selector.addItem(QString(text),
  67                         qVariantFromValue(l));
  68                 g_free(text);
  69         }
  70
  71         _run_stop_button.setText("Run");
  72
  73         addWidget(&_device_selector);
  74         addWidget(&_record_length_selector);
  75         _sample_rate_list_action = addWidget(&_sample_rate_list);
  76         _sample_rate_value_action = addWidget(&_sample_rate_value);
  77         addWidget(&_run_stop_button);
  78
  79         update_device_selector();
  80         update_sample_rate_selector();
  81 }
  82
  83 struct sr_dev_inst* SamplingBar::get_selected_device() const
  84 {
  85         const int index = _device_selector.currentIndex();
  86         if(index < 0)
  87                 return NULL;
  88
  89         return (sr_dev_inst*)_device_selector.itemData(
  90                 index).value<void*>();
  91 }
  92
  93 uint64_t SamplingBar::get_record_length() const
  94 {
  95         const int index = _record_length_selector.currentIndex();
  96         if(index < 0)
  97                 return 0;
  98
  99         return _record_length_selector.itemData(index).value<uint64_t>();
 100 }
 101
 102 uint64_t SamplingBar::get_sample_rate() const
 103 {
 104         assert(_sample_rate_value_action);
 105         assert(_sample_rate_list_action);
 106
 107         if(_sample_rate_value_action->isVisible())
 108                 return (uint64_t)_sample_rate_value.value();
 109         else if(_sample_rate_list_action->isVisible())
 110         {
 111                 const int index = _sample_rate_list.currentIndex();
 112                 if(index < 0)
 113                         return 0;
 114
 115                 return _sample_rate_list.itemData(index).value<uint64_t>();
 116         }
 117
 118         return 0;
 119 }
 120
 121 void SamplingBar::update_device_selector()
 122 {
 123         GSList *devices = NULL;
 124
 125         /* Scan all drivers for all devices. */
 126         struct sr_dev_driver **const drivers = sr_driver_list();
 127         for (struct sr_dev_driver **driver = drivers; *driver; driver++) {
 128                 GSList *tmpdevs = sr_driver_scan(*driver, NULL);
 129                 for (GSList *l = tmpdevs; l; l = l->next)
 130                         devices = g_slist_append(devices, l->data);
 131                 g_slist_free(tmpdevs);
 132         }
 133
 134         for (GSList *l = devices; l; l = l->next) {
 135                 sr_dev_inst *const sdi = (sr_dev_inst*)l->data;
 136
 137                 QString title;
 138                 if (sdi->vendor && sdi->vendor[0])
 139                         title += sdi->vendor + QString(" ");
 140                 if (sdi->model && sdi->model[0])
 141                         title += sdi->model + QString(" ");
 142                 if (sdi->version && sdi->version[0])
 143                         title += sdi->version + QString(" ");
 144
 145                 _device_selector.addItem(title, qVariantFromValue(
 146                         (void*)sdi));
 147         }
 148
 149         g_slist_free(devices);
 150 }
 151
 152 void SamplingBar::update_sample_rate_selector()
 153 {
 154         const sr_dev_inst *const sdi = get_selected_device();
 155         const struct sr_samplerates *samplerates;
 156
 157         assert(_sample_rate_value_action);
 158         assert(_sample_rate_list_action);
 159
 160         if (sr_info_get(sdi->driver, SR_DI_SAMPLERATES,
 161                 (const void **)&samplerates, sdi) != SR_OK)
 162                 return;
 163
 164         _sample_rate_list_action->setVisible(false);
 165         _sample_rate_value_action->setVisible(false);
 166
 167         if (samplerates->step)
 168         {
 169                 _sample_rate_value.setRange(
 170                         samplerates->low, samplerates->high);
 171                 _sample_rate_value.setSingleStep(samplerates->step);
 172                 _sample_rate_value_action->setVisible(true);
 173         }
 174         else
 175         {
 176                 _sample_rate_list.clear();
 177                 for (const uint64_t *rate = samplerates->list;
 178                      *rate; rate++)
 179                         _sample_rate_list.addItem(
 180                                 sr_samplerate_string(*rate),
 181                                 qVariantFromValue(*rate));
 182                 _sample_rate_list.show();
 183                 _sample_rate_list_action->setVisible(true);
 184         }
 185 }
 186
 187 void SamplingBar::on_device_selected()
 188 {
 189         update_sample_rate_selector();
 190 }
 191
 192 } // namespace pv