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 #include <pv/dialogs/hwcap.h>
  34
  35 namespace pv {
  36
  37 const uint64_t SamplingBar::RecordLengths[11] = {
  38         1000000,
  39         2000000,
  40         5000000,
  41         10000000,
  42         25000000,
  43         50000000,
  44         100000000,
  45         250000000,
  46         500000000,
  47         1000000000,
  48         10000000000
  49 };
  50
  51 SamplingBar::SamplingBar(QWidget *parent) :
  52         QToolBar("Sampling Bar", parent),
  53         _device_selector(this),
  54         _configure_button(this),
  55         _record_length_selector(this),
  56         _sample_rate_list(this),
  57         _run_stop_button(this)
  58 {
  59         connect(&_run_stop_button, SIGNAL(clicked()),
  60                 this, SIGNAL(run_stop()));
  61         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  62                 this, SLOT(on_device_selected()));
  63         connect(&_configure_button, SIGNAL(clicked()),
  64                 this, SLOT(configure()));
  65
  66         _sample_rate_value.setDecimals(0);
  67         _sample_rate_value.setSuffix("Hz");
  68
  69         BOOST_FOREACH(uint64_t l, RecordLengths)
  70         {
  71                 char *const text = sr_si_string_u64(l, " samples");
  72                 _record_length_selector.addItem(QString(text),
  73                         qVariantFromValue(l));
  74                 g_free(text);
  75         }
  76
  77         set_sampling(false);
  78
  79         _configure_button.setIcon(QIcon::fromTheme("configure"));
  80
  81         addWidget(&_device_selector);
  82         addWidget(&_configure_button);
  83         addWidget(&_record_length_selector);
  84         _sample_rate_list_action = addWidget(&_sample_rate_list);
  85         _sample_rate_value_action = addWidget(&_sample_rate_value);
  86         addWidget(&_run_stop_button);
  87
  88         update_device_selector();
  89         update_sample_rate_selector();
  90 }
  91
  92 struct sr_dev_inst* SamplingBar::get_selected_device() const
  93 {
  94         const int index = _device_selector.currentIndex();
  95         if (index < 0)
  96                 return NULL;
  97
  98         return (sr_dev_inst*)_device_selector.itemData(
  99                 index).value<void*>();
 100 }
 101
 102 uint64_t SamplingBar::get_record_length() const
 103 {
 104         const int index = _record_length_selector.currentIndex();
 105         if (index < 0)
 106                 return 0;
 107
 108         return _record_length_selector.itemData(index).value<uint64_t>();
 109 }
 110
 111 uint64_t SamplingBar::get_sample_rate() const
 112 {
 113         assert(_sample_rate_value_action);
 114         assert(_sample_rate_list_action);
 115
 116         if (_sample_rate_value_action->isVisible())
 117                 return (uint64_t)_sample_rate_value.value();
 118         else if (_sample_rate_list_action->isVisible())
 119         {
 120                 const int index = _sample_rate_list.currentIndex();
 121                 if (index < 0)
 122                         return 0;
 123
 124                 return _sample_rate_list.itemData(index).value<uint64_t>();
 125         }
 126
 127         return 0;
 128 }
 129
 130 void SamplingBar::set_sampling(bool sampling)
 131 {
 132         _run_stop_button.setText(sampling ? "Stop" : "Run");
 133 }
 134
 135 void SamplingBar::update_device_selector()
 136 {
 137         GSList *devices = NULL;
 138
 139         /* Scan all drivers for all devices. */
 140         struct sr_dev_driver **const drivers = sr_driver_list();
 141         for (struct sr_dev_driver **driver = drivers; *driver; driver++) {
 142                 GSList *tmpdevs = sr_driver_scan(*driver, NULL);
 143                 for (GSList *l = tmpdevs; l; l = l->next)
 144                         devices = g_slist_append(devices, l->data);
 145                 g_slist_free(tmpdevs);
 146         }
 147
 148         for (GSList *l = devices; l; l = l->next) {
 149                 sr_dev_inst *const sdi = (sr_dev_inst*)l->data;
 150
 151                 QString title;
 152                 if (sdi->vendor && sdi->vendor[0])
 153                         title += sdi->vendor + QString(" ");
 154                 if (sdi->model && sdi->model[0])
 155                         title += sdi->model + QString(" ");
 156                 if (sdi->version && sdi->version[0])
 157                         title += sdi->version + QString(" ");
 158
 159                 _device_selector.addItem(title, qVariantFromValue(
 160                         (void*)sdi));
 161         }
 162
 163         g_slist_free(devices);
 164 }
 165
 166 void SamplingBar::update_sample_rate_selector()
 167 {
 168         const sr_dev_inst *const sdi = get_selected_device();
 169         const struct sr_samplerates *samplerates;
 170
 171         assert(_sample_rate_value_action);
 172         assert(_sample_rate_list_action);
 173
 174         if (sr_info_get(sdi->driver, SR_DI_SAMPLERATES,
 175                 (const void **)&samplerates, sdi) != SR_OK)
 176                 return;
 177
 178         _sample_rate_list_action->setVisible(false);
 179         _sample_rate_value_action->setVisible(false);
 180
 181         if (samplerates->step)
 182         {
 183                 _sample_rate_value.setRange(
 184                         samplerates->low, samplerates->high);
 185                 _sample_rate_value.setSingleStep(samplerates->step);
 186                 _sample_rate_value_action->setVisible(true);
 187         }
 188         else
 189         {
 190                 _sample_rate_list.clear();
 191                 for (const uint64_t *rate = samplerates->list;
 192                      *rate; rate++)
 193                         _sample_rate_list.addItem(
 194                                 sr_samplerate_string(*rate),
 195                                 qVariantFromValue(*rate));
 196                 _sample_rate_list.show();
 197                 _sample_rate_list_action->setVisible(true);
 198         }
 199 }
 200
 201 void SamplingBar::on_device_selected()
 202 {
 203         update_sample_rate_selector();
 204 }
 205
 206 void SamplingBar::configure()
 207 {
 208         sr_dev_inst *const sdi = get_selected_device();
 209         assert(sdi);
 210
 211         pv::dialogs::HwCap dlg(this, sdi);
 212         dlg.exec();
 213 }
 214
 215 } // namespace pv