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 <extdef.h>
  22
  23 #include <assert.h>
  24
  25 #include <libsigrok/libsigrok.h>
  26
  27 #include <QAction>
  28 #include <QDebug>
  29
  30 #include "samplingbar.h"
  31
  32 #include <pv/dialogs/deviceoptions.h>
  33
  34 namespace pv {
  35
  36 const uint64_t SamplingBar::RecordLengths[20] = {
  37         1000,
  38         2500,
  39         5000,
  40         10000,
  41         25000,
  42         50000,
  43         100000,
  44         250000,
  45         500000,
  46         1000000,
  47         2000000,
  48         5000000,
  49         10000000,
  50         25000000,
  51         50000000,
  52         100000000,
  53         250000000,
  54         500000000,
  55         1000000000,
  56         10000000000ULL,
  57 };
  58
  59 const uint64_t SamplingBar::DefaultRecordLength = 1000000;
  60
  61 SamplingBar::SamplingBar(QWidget *parent) :
  62         QToolBar("Sampling Bar", parent),
  63         _device_selector(this),
  64         _configure_button(this),
  65         _record_length_selector(this),
  66         _sample_rate_list(this),
  67         _icon_green(":/icons/status-green.svg"),
  68         _icon_grey(":/icons/status-grey.svg"),
  69         _run_stop_button(this)
  70 {
  71         connect(&_run_stop_button, SIGNAL(clicked()),
  72                 this, SIGNAL(run_stop()));
  73         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  74                 this, SLOT(on_device_selected()));
  75         connect(&_configure_button, SIGNAL(clicked()),
  76                 this, SLOT(configure()));
  77
  78         _sample_rate_value.setDecimals(0);
  79         _sample_rate_value.setSuffix("Hz");
  80
  81         for (size_t i = 0; i < countof(RecordLengths); i++)
  82         {
  83                 const uint64_t &l = RecordLengths[i];
  84                 char *const text = sr_si_string_u64(l, " samples");
  85                 _record_length_selector.addItem(QString(text),
  86                         qVariantFromValue(l));
  87                 g_free(text);
  88
  89                 if (l == DefaultRecordLength)
  90                         _record_length_selector.setCurrentIndex(i);
  91         }
  92
  93         set_sampling(false);
  94
  95         _configure_button.setIcon(QIcon::fromTheme("configure",
  96                 QIcon(":/icons/configure.png")));
  97
  98         _run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
  99
 100         addWidget(&_device_selector);
 101         addWidget(&_configure_button);
 102         addWidget(&_record_length_selector);
 103         _sample_rate_list_action = addWidget(&_sample_rate_list);
 104         _sample_rate_value_action = addWidget(&_sample_rate_value);
 105         addWidget(&_run_stop_button);
 106
 107         update_device_selector();
 108
 109         update_sample_rate_selector();
 110         connect(&_sample_rate_list, SIGNAL(currentIndexChanged(int)),
 111                 this, SLOT(on_sample_rate_changed()));
 112         connect(&_sample_rate_value, SIGNAL(valueChanged(double)),
 113                 this, SLOT(on_sample_rate_changed()));
 114 }
 115
 116 struct sr_dev_inst* SamplingBar::get_selected_device() const
 117 {
 118         const int index = _device_selector.currentIndex();
 119         if (index < 0)
 120                 return NULL;
 121
 122         return (sr_dev_inst*)_device_selector.itemData(
 123                 index).value<void*>();
 124 }
 125
 126 uint64_t SamplingBar::get_record_length() const
 127 {
 128         const int index = _record_length_selector.currentIndex();
 129         if (index < 0)
 130                 return 0;
 131
 132         return _record_length_selector.itemData(index).value<uint64_t>();
 133 }
 134
 135 void SamplingBar::set_sampling(bool sampling)
 136 {
 137         _run_stop_button.setIcon(sampling ? _icon_green : _icon_grey);
 138         _run_stop_button.setText(sampling ? "Stop" : "Run");
 139 }
 140
 141 void SamplingBar::update_device_selector()
 142 {
 143         GSList *devices = NULL;
 144
 145         /* Scan all drivers for all devices. */
 146         struct sr_dev_driver **const drivers = sr_driver_list();
 147         for (struct sr_dev_driver **driver = drivers; *driver; driver++) {
 148                 GSList *tmpdevs = sr_driver_scan(*driver, NULL);
 149                 for (GSList *l = tmpdevs; l; l = l->next)
 150                         devices = g_slist_append(devices, l->data);
 151                 g_slist_free(tmpdevs);
 152         }
 153
 154         for (GSList *l = devices; l; l = l->next) {
 155                 sr_dev_inst *const sdi = (sr_dev_inst*)l->data;
 156
 157                 QString title;
 158                 if (sdi->vendor && sdi->vendor[0])
 159                         title += sdi->vendor + QString(" ");
 160                 if (sdi->model && sdi->model[0])
 161                         title += sdi->model + QString(" ");
 162                 if (sdi->version && sdi->version[0])
 163                         title += sdi->version + QString(" ");
 164
 165                 _device_selector.addItem(title, qVariantFromValue(
 166                         (void*)sdi));
 167         }
 168
 169         g_slist_free(devices);
 170 }
 171
 172 void SamplingBar::update_sample_rate_selector()
 173 {
 174         const sr_dev_inst *const sdi = get_selected_device();
 175         const struct sr_samplerates *samplerates;
 176
 177         assert(_sample_rate_value_action);
 178         assert(_sample_rate_list_action);
 179
 180         if (!sdi)
 181                 return;
 182
 183         if (sr_config_list(sdi->driver, SR_CONF_SAMPLERATE,
 184                 (const void **)&samplerates, sdi) != SR_OK)
 185                 return;
 186
 187         _sample_rate_list_action->setVisible(false);
 188         _sample_rate_value_action->setVisible(false);
 189
 190         if (samplerates->step)
 191         {
 192                 _sample_rate_value.setRange(
 193                         samplerates->low, samplerates->high);
 194                 _sample_rate_value.setSingleStep(samplerates->step);
 195                 _sample_rate_value_action->setVisible(true);
 196         }
 197         else
 198         {
 199                 _sample_rate_list.clear();
 200                 for (const uint64_t *rate = samplerates->list;
 201                      *rate; rate++)
 202                         _sample_rate_list.addItem(
 203                                 sr_samplerate_string(*rate),
 204                                 qVariantFromValue(*rate));
 205                 _sample_rate_list.show();
 206                 _sample_rate_list_action->setVisible(true);
 207         }
 208
 209         update_sample_rate_selector_value();
 210 }
 211
 212 void SamplingBar::update_sample_rate_selector_value()
 213 {
 214         sr_dev_inst *const sdi = get_selected_device();
 215         assert(sdi);
 216
 217         uint64_t *samplerate = NULL;
 218         if(sr_config_get(sdi->driver, SR_CONF_SAMPLERATE,
 219                 (const void**)&samplerate, sdi) != SR_OK) {
 220                 qDebug() <<
 221                                 "WARNING: Failed to get value of sample rate";
 222                 return;
 223         }
 224
 225         assert(_sample_rate_value_action);
 226         assert(_sample_rate_list_action);
 227
 228         if (_sample_rate_value_action->isVisible())
 229                 _sample_rate_value.setValue(*samplerate);
 230         else if (_sample_rate_list_action->isVisible())
 231         {
 232                 for(int i = 0; i < _sample_rate_list.count(); i++)
 233                         if(*samplerate == _sample_rate_list.itemData(
 234                                 i).value<uint64_t>())
 235                                 _sample_rate_list.setCurrentIndex(i);
 236         }
 237 }
 238
 239 void SamplingBar::commit_sample_rate()
 240 {
 241         uint64_t sample_rate = 0;
 242
 243         sr_dev_inst *const sdi = get_selected_device();
 244         assert(sdi);
 245
 246         assert(_sample_rate_value_action);
 247         assert(_sample_rate_list_action);
 248
 249         if (_sample_rate_value_action->isVisible())
 250                 sample_rate = (uint64_t)_sample_rate_value.value();
 251         else if (_sample_rate_list_action->isVisible())
 252         {
 253                 const int index = _sample_rate_list.currentIndex();
 254                 if (index >= 0)
 255                         sample_rate = _sample_rate_list.itemData(
 256                                 index).value<uint64_t>();
 257         }
 258
 259         // Set the samplerate
 260         if (sr_config_set(sdi, SR_CONF_SAMPLERATE,
 261                 &sample_rate) != SR_OK) {
 262                 qDebug() << "Failed to configure samplerate.";
 263                 return;
 264         }
 265 }
 266
 267 void SamplingBar::on_device_selected()
 268 {
 269         update_sample_rate_selector();
 270 }
 271
 272 void SamplingBar::on_sample_rate_changed()
 273 {
 274         commit_sample_rate();
 275 }
 276
 277 void SamplingBar::configure()
 278 {
 279         commit_sample_rate();
 280
 281         sr_dev_inst *const sdi = get_selected_device();
 282         assert(sdi);
 283
 284         pv::dialogs::DeviceOptions dlg(this, sdi);
 285         dlg.exec();
 286
 287         update_sample_rate_selector_value();
 288 }
 289
 290 } // namespace pv