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