pv/toolbars/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 <boost/foreach.hpp>
  26
  27 #include <libsigrok/libsigrok.h>
  28
  29 #include <QAction>
  30 #include <QDebug>
  31
  32 #include "samplingbar.h"
  33
  34 #include <pv/dialogs/deviceoptions.h>
  35
  36 namespace pv {
  37 namespace toolbars {
  38
  39 const uint64_t SamplingBar::RecordLengths[20] = {
  40         1000,
  41         2500,
  42         5000,
  43         10000,
  44         25000,
  45         50000,
  46         100000,
  47         250000,
  48         500000,
  49         1000000,
  50         2000000,
  51         5000000,
  52         10000000,
  53         25000000,
  54         50000000,
  55         100000000,
  56         250000000,
  57         500000000,
  58         1000000000,
  59         10000000000ULL,
  60 };
  61
  62 const uint64_t SamplingBar::DefaultRecordLength = 1000000;
  63
  64 SamplingBar::SamplingBar(QWidget *parent) :
  65         QToolBar("Sampling Bar", parent),
  66         _device_selector(this),
  67         _configure_button(this),
  68         _record_length_selector(this),
  69         _sample_rate_list(this),
  70         _icon_green(":/icons/status-green.svg"),
  71         _icon_grey(":/icons/status-grey.svg"),
  72         _run_stop_button(this)
  73 {
  74         connect(&_run_stop_button, SIGNAL(clicked()),
  75                 this, SLOT(on_run_stop()));
  76         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  77                 this, SLOT(on_device_selected()));
  78         connect(&_configure_button, SIGNAL(clicked()),
  79                 this, SLOT(on_configure()));
  80
  81         _sample_rate_value.setDecimals(0);
  82         _sample_rate_value.setSuffix("Hz");
  83
  84         for (size_t i = 0; i < countof(RecordLengths); i++)
  85         {
  86                 const uint64_t &l = RecordLengths[i];
  87                 char *const text = sr_si_string_u64(l, " samples");
  88                 _record_length_selector.addItem(QString(text),
  89                         qVariantFromValue(l));
  90                 g_free(text);
  91
  92                 if (l == DefaultRecordLength)
  93                         _record_length_selector.setCurrentIndex(i);
  94         }
  95
  96         set_sampling(false);
  97
  98         _configure_button.setIcon(QIcon::fromTheme("configure",
  99                 QIcon(":/icons/configure.png")));
 100
 101         _run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 102
 103         addWidget(&_device_selector);
 104         addWidget(&_configure_button);
 105         addWidget(&_record_length_selector);
 106         _sample_rate_list_action = addWidget(&_sample_rate_list);
 107         _sample_rate_value_action = addWidget(&_sample_rate_value);
 108         addWidget(&_run_stop_button);
 109
 110         connect(&_sample_rate_list, SIGNAL(currentIndexChanged(int)),
 111                 this, SLOT(on_sample_rate_changed()));
 112         connect(&_sample_rate_value, SIGNAL(editingFinished()),
 113                 this, SLOT(on_sample_rate_changed()));
 114 }
 115
 116 void SamplingBar::set_device_list(
 117         const std::list<struct sr_dev_inst*> &devices)
 118 {
 119         _device_selector.clear();
 120
 121         BOOST_FOREACH (sr_dev_inst *sdi, devices) {
 122                 QString title;
 123                 if (sdi->vendor && sdi->vendor[0])
 124                         title += sdi->vendor + QString(" ");
 125                 if (sdi->model && sdi->model[0])
 126                         title += sdi->model + QString(" ");
 127                 if (sdi->version && sdi->version[0])
 128                         title += sdi->version + QString(" ");
 129
 130                 _device_selector.addItem(title, qVariantFromValue(
 131                         (void*)sdi));
 132         }
 133
 134         update_sample_rate_selector();
 135 }
 136
 137 struct sr_dev_inst* SamplingBar::get_selected_device() const
 138 {
 139         const int index = _device_selector.currentIndex();
 140         if (index < 0)
 141                 return NULL;
 142
 143         return (sr_dev_inst*)_device_selector.itemData(
 144                 index).value<void*>();
 145 }
 146
 147 void SamplingBar::set_selected_device(struct sr_dev_inst *const sdi)
 148 {
 149         for (int i = 0; i < _device_selector.count(); i++)
 150                 if (sdi == _device_selector.itemData(i).value<void*>()) {
 151                         _device_selector.setCurrentIndex(i);
 152                         return;
 153                 }
 154 }
 155
 156 uint64_t SamplingBar::get_record_length() const
 157 {
 158         const int index = _record_length_selector.currentIndex();
 159         if (index < 0)
 160                 return 0;
 161
 162         return _record_length_selector.itemData(index).value<uint64_t>();
 163 }
 164
 165 void SamplingBar::set_sampling(bool sampling)
 166 {
 167         _run_stop_button.setIcon(sampling ? _icon_green : _icon_grey);
 168         _run_stop_button.setText(sampling ? "Stop" : "Run");
 169 }
 170
 171 void SamplingBar::update_sample_rate_selector()
 172 {
 173         const sr_dev_inst *const sdi = get_selected_device();
 174         GVariant *gvar_dict, *gvar_list;
 175         const uint64_t *elements = NULL;
 176         gsize num_elements;
 177         QAction *selector_action = NULL;
 178
 179         assert(_sample_rate_value_action);
 180         assert(_sample_rate_list_action);
 181
 182         if (!sdi)
 183                 return;
 184
 185         if (sr_config_list(sdi->driver, SR_CONF_SAMPLERATE,
 186                         &gvar_dict, sdi) != SR_OK)
 187                 return;
 188
 189         _sample_rate_list_action->setVisible(false);
 190         _sample_rate_value_action->setVisible(false);
 191
 192         if ((gvar_list = g_variant_lookup_value(gvar_dict,
 193                         "samplerate-steps", G_VARIANT_TYPE("at")))) {
 194                 elements = (const uint64_t *)g_variant_get_fixed_array(
 195                                 gvar_list, &num_elements, sizeof(uint64_t));
 196                 _sample_rate_value.setRange(elements[0], elements[1]);
 197                 _sample_rate_value.setSingleStep(elements[2]);
 198                 g_variant_unref(gvar_list);
 199
 200                 selector_action = _sample_rate_value_action;
 201         }
 202         else if ((gvar_list = g_variant_lookup_value(gvar_dict,
 203                         "samplerates", G_VARIANT_TYPE("at"))))
 204         {
 205                 elements = (const uint64_t *)g_variant_get_fixed_array(
 206                                 gvar_list, &num_elements, sizeof(uint64_t));
 207                 _sample_rate_list.clear();
 208
 209                 for (unsigned int i = 0; i < num_elements; i++)
 210                 {
 211                         char *const s = sr_samplerate_string(elements[i]);
 212                         _sample_rate_list.addItem(QString(s),
 213                                 qVariantFromValue(elements[i]));
 214                         g_free(s);
 215                 }
 216
 217                 _sample_rate_list.show();
 218                 g_variant_unref(gvar_list);
 219
 220                 selector_action = _sample_rate_list_action;
 221         }
 222
 223         g_variant_unref(gvar_dict);
 224         update_sample_rate_selector_value();
 225
 226         // We delay showing the action, so that value change events
 227         // are ignored.
 228         if (selector_action)
 229                 selector_action->setVisible(true);
 230 }
 231
 232 void SamplingBar::update_sample_rate_selector_value()
 233 {
 234         sr_dev_inst *const sdi = get_selected_device();
 235         GVariant *gvar;
 236         uint64_t samplerate;
 237
 238         assert(sdi);
 239
 240         if (sr_config_get(sdi->driver, SR_CONF_SAMPLERATE,
 241                 &gvar, sdi) != SR_OK) {
 242                 qDebug() <<
 243                                 "WARNING: Failed to get value of sample rate";
 244                 return;
 245         }
 246         samplerate = g_variant_get_uint64(gvar);
 247         g_variant_unref(gvar);
 248
 249         assert(_sample_rate_value_action);
 250         assert(_sample_rate_list_action);
 251
 252         if (_sample_rate_value_action->isVisible())
 253                 _sample_rate_value.setValue(samplerate);
 254         else if (_sample_rate_list_action->isVisible())
 255         {
 256                 for (int i = 0; i < _sample_rate_list.count(); i++)
 257                         if (samplerate == _sample_rate_list.itemData(
 258                                 i).value<uint64_t>())
 259                                 _sample_rate_list.setCurrentIndex(i);
 260         }
 261 }
 262
 263 void SamplingBar::commit_sample_rate()
 264 {
 265         uint64_t sample_rate = 0;
 266
 267         sr_dev_inst *const sdi = get_selected_device();
 268         assert(sdi);
 269
 270         assert(_sample_rate_value_action);
 271         assert(_sample_rate_list_action);
 272
 273         if (_sample_rate_value_action->isVisible())
 274                 sample_rate = (uint64_t)_sample_rate_value.value();
 275         else if (_sample_rate_list_action->isVisible())
 276         {
 277                 const int index = _sample_rate_list.currentIndex();
 278                 if (index >= 0)
 279                         sample_rate = _sample_rate_list.itemData(
 280                                 index).value<uint64_t>();
 281         }
 282
 283         if (sample_rate == 0)
 284                 return;
 285
 286         // Set the samplerate
 287         if (sr_config_set(sdi, SR_CONF_SAMPLERATE,
 288                 g_variant_new_uint64(sample_rate)) != SR_OK) {
 289                 qDebug() << "Failed to configure samplerate.";
 290                 return;
 291         }
 292 }
 293
 294 void SamplingBar::on_device_selected()
 295 {
 296         update_sample_rate_selector();
 297         device_selected();
 298 }
 299
 300 void SamplingBar::on_sample_rate_changed()
 301 {
 302         commit_sample_rate();
 303 }
 304
 305 void SamplingBar::on_configure()
 306 {
 307         commit_sample_rate();
 308
 309         sr_dev_inst *const sdi = get_selected_device();
 310         assert(sdi);
 311
 312         pv::dialogs::DeviceOptions dlg(this, sdi);
 313         dlg.exec();
 314
 315         update_sample_rate_selector_value();
 316 }
 317
 318 void SamplingBar::on_run_stop()
 319 {
 320         commit_sample_rate();
 321         run_stop();
 322 }
 323
 324 } // namespace toolbars
 325 } // namespace pv