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/devicemanager.h>
  35 #include <pv/popups/deviceoptions.h>
  36
  37 using std::string;
  38
  39 namespace pv {
  40 namespace toolbars {
  41
  42 const uint64_t SamplingBar::RecordLengths[20] = {
  43         1000,
  44         2500,
  45         5000,
  46         10000,
  47         25000,
  48         50000,
  49         100000,
  50         250000,
  51         500000,
  52         1000000,
  53         2000000,
  54         5000000,
  55         10000000,
  56         25000000,
  57         50000000,
  58         100000000,
  59         250000000,
  60         500000000,
  61         1000000000,
  62         10000000000ULL,
  63 };
  64
  65 const uint64_t SamplingBar::DefaultRecordLength = 1000000;
  66
  67 SamplingBar::SamplingBar(SigSession &session, QWidget *parent) :
  68         QToolBar("Sampling Bar", parent),
  69         _session(session),
  70         _device_selector(this),
  71         _updating_device_selector(false),
  72         _configure_button(this),
  73         _configure_button_action(NULL),
  74         _probes_button(this),
  75         _probes_popup(_session, this),
  76         _record_length_selector(this),
  77         _sample_rate_action(NULL),
  78         _sample_rate_list(this),
  79         _icon_red(":/icons/status-red.svg"),
  80         _icon_green(":/icons/status-green.svg"),
  81         _icon_grey(":/icons/status-grey.svg"),
  82         _run_stop_button(this)
  83 {
  84         connect(&_run_stop_button, SIGNAL(clicked()),
  85                 this, SLOT(on_run_stop()));
  86         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  87                 this, SLOT(on_device_selected()));
  88
  89         _sample_rate_value.setDecimals(0);
  90         _sample_rate_value.setSuffix("Hz");
  91
  92         for (size_t i = 0; i < countof(RecordLengths); i++)
  93         {
  94                 const uint64_t &l = RecordLengths[i];
  95                 char *const text = sr_si_string_u64(l, " samples");
  96                 _record_length_selector.addItem(QString::fromUtf8(text),
  97                         qVariantFromValue(l));
  98                 g_free(text);
  99
 100                 if (l == DefaultRecordLength)
 101                         _record_length_selector.setCurrentIndex(i);
 102         }
 103
 104         set_capture_state(pv::SigSession::Stopped);
 105
 106         _configure_button.setIcon(QIcon::fromTheme("configure",
 107                 QIcon(":/icons/configure.png")));
 108
 109         _probes_button.setIcon(QIcon::fromTheme("probes",
 110                 QIcon(":/icons/probes.svg")));
 111         _probes_button.set_popup(&_probes_popup);
 112
 113         _run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 114
 115         addWidget(&_device_selector);
 116         _configure_button_action = addWidget(&_configure_button);
 117         addWidget(&_probes_button);
 118         addWidget(&_record_length_selector);
 119         _sample_rate_list_action = addWidget(&_sample_rate_list);
 120         _sample_rate_value_action = addWidget(&_sample_rate_value);
 121         addWidget(&_run_stop_button);
 122
 123         connect(&_sample_rate_list, SIGNAL(currentIndexChanged(int)),
 124                 this, SLOT(on_sample_rate_changed()));
 125         connect(&_sample_rate_value, SIGNAL(editingFinished()),
 126                 this, SLOT(on_sample_rate_changed()));
 127 }
 128
 129 void SamplingBar::set_device_list(
 130         const std::list<struct sr_dev_inst*> &devices)
 131 {
 132         _updating_device_selector = true;
 133
 134         _device_selector.clear();
 135
 136         BOOST_FOREACH (sr_dev_inst *sdi, devices) {
 137                 const string title = DeviceManager::format_device_title(sdi);
 138                 _device_selector.addItem(title.c_str(),
 139                         qVariantFromValue((void*)sdi));
 140         }
 141
 142         _updating_device_selector = false;
 143
 144         on_device_selected();
 145 }
 146
 147 struct sr_dev_inst* SamplingBar::get_selected_device() const
 148 {
 149         const int index = _device_selector.currentIndex();
 150         if (index < 0)
 151                 return NULL;
 152
 153         return (sr_dev_inst*)_device_selector.itemData(
 154                 index).value<void*>();
 155 }
 156
 157 void SamplingBar::set_selected_device(struct sr_dev_inst *const sdi)
 158 {
 159         for (int i = 0; i < _device_selector.count(); i++)
 160                 if (sdi == _device_selector.itemData(i).value<void*>()) {
 161                         _device_selector.setCurrentIndex(i);
 162                         return;
 163                 }
 164 }
 165
 166 uint64_t SamplingBar::get_record_length() const
 167 {
 168         const int index = _record_length_selector.currentIndex();
 169         if (index < 0)
 170                 return 0;
 171
 172         return _record_length_selector.itemData(index).value<uint64_t>();
 173 }
 174
 175 void SamplingBar::set_capture_state(pv::SigSession::capture_state state)
 176 {
 177         const QIcon *icons[] = {&_icon_grey, &_icon_red, &_icon_green};
 178         _run_stop_button.setIcon(*icons[state]);
 179         _run_stop_button.setText((state == pv::SigSession::Stopped) ?
 180                 tr("Run") : tr("Stop"));
 181 }
 182
 183 void SamplingBar::update_sample_rate_selector()
 184 {
 185         const sr_dev_inst *const sdi = get_selected_device();
 186         GVariant *gvar_dict, *gvar_list;
 187         const uint64_t *elements = NULL;
 188         gsize num_elements;
 189
 190         assert(_sample_rate_value_action);
 191         assert(_sample_rate_list_action);
 192
 193         if (!sdi)
 194                 return;
 195
 196         if (sr_config_list(sdi->driver, sdi, NULL,
 197                         SR_CONF_SAMPLERATE, &gvar_dict) != SR_OK)
 198                 return;
 199
 200         _sample_rate_list_action->setVisible(false);
 201         _sample_rate_value_action->setVisible(false);
 202
 203         if ((gvar_list = g_variant_lookup_value(gvar_dict,
 204                         "samplerate-steps", G_VARIANT_TYPE("at")))) {
 205                 elements = (const uint64_t *)g_variant_get_fixed_array(
 206                                 gvar_list, &num_elements, sizeof(uint64_t));
 207                 _sample_rate_value.setRange(elements[0], elements[1]);
 208                 _sample_rate_value.setSingleStep(elements[2]);
 209                 g_variant_unref(gvar_list);
 210
 211                 _sample_rate_action = _sample_rate_value_action;
 212         }
 213         else if ((gvar_list = g_variant_lookup_value(gvar_dict,
 214                         "samplerates", G_VARIANT_TYPE("at"))))
 215         {
 216                 elements = (const uint64_t *)g_variant_get_fixed_array(
 217                                 gvar_list, &num_elements, sizeof(uint64_t));
 218                 _sample_rate_list.clear();
 219
 220                 for (unsigned int i = 0; i < num_elements; i++)
 221                 {
 222                         char *const s = sr_samplerate_string(elements[i]);
 223                         _sample_rate_list.addItem(QString::fromUtf8(s),
 224                                 qVariantFromValue(elements[i]));
 225                         g_free(s);
 226                 }
 227
 228                 _sample_rate_list.show();
 229                 g_variant_unref(gvar_list);
 230
 231                 _sample_rate_action = _sample_rate_list_action;
 232         }
 233
 234         g_variant_unref(gvar_dict);
 235         update_sample_rate_selector_value();
 236
 237         // We delay showing the action, so that value change events
 238         // are ignored.
 239         if (_sample_rate_action)
 240                 _sample_rate_action->setVisible(true);
 241 }
 242
 243 void SamplingBar::update_sample_rate_selector_value()
 244 {
 245         sr_dev_inst *const sdi = get_selected_device();
 246         GVariant *gvar;
 247         uint64_t samplerate;
 248
 249         assert(sdi);
 250
 251         if (sr_config_get(sdi->driver, sdi, NULL,
 252                 SR_CONF_SAMPLERATE, &gvar) != SR_OK) {
 253                 qDebug() <<
 254                                 "WARNING: Failed to get value of sample rate";
 255                 return;
 256         }
 257         samplerate = g_variant_get_uint64(gvar);
 258         g_variant_unref(gvar);
 259
 260         assert(_sample_rate_value_action);
 261         assert(_sample_rate_list_action);
 262
 263         if (_sample_rate_action == _sample_rate_value_action)
 264                 _sample_rate_value.setValue(samplerate);
 265         else if (_sample_rate_action == _sample_rate_list_action)
 266         {
 267                 for (int i = 0; i < _sample_rate_list.count(); i++)
 268                         if (samplerate == _sample_rate_list.itemData(
 269                                 i).value<uint64_t>())
 270                                 _sample_rate_list.setCurrentIndex(i);
 271         }
 272 }
 273
 274 void SamplingBar::commit_sample_rate()
 275 {
 276         uint64_t sample_rate = 0;
 277
 278         sr_dev_inst *const sdi = get_selected_device();
 279         assert(sdi);
 280
 281         assert(_sample_rate_value_action);
 282         assert(_sample_rate_list_action);
 283
 284         if (_sample_rate_action == _sample_rate_value_action)
 285                 sample_rate = (uint64_t)_sample_rate_value.value();
 286         else if (_sample_rate_action == _sample_rate_list_action)
 287         {
 288                 const int index = _sample_rate_list.currentIndex();
 289                 if (index >= 0)
 290                         sample_rate = _sample_rate_list.itemData(
 291                                 index).value<uint64_t>();
 292         }
 293
 294         if (sample_rate == 0)
 295                 return;
 296
 297         // Set the samplerate
 298         if (sr_config_set(sdi, NULL, SR_CONF_SAMPLERATE,
 299                 g_variant_new_uint64(sample_rate)) != SR_OK) {
 300                 qDebug() << "Failed to configure samplerate.";
 301                 return;
 302         }
 303 }
 304
 305 void SamplingBar::on_device_selected()
 306 {
 307         using pv::popups::DeviceOptions;
 308
 309         if (_updating_device_selector)
 310                 return;
 311
 312         update_sample_rate_selector();
 313
 314         sr_dev_inst *const sdi = get_selected_device();
 315         _session.set_device(sdi);
 316
 317         // Update the configure popup
 318         DeviceOptions *const opts = new DeviceOptions(sdi, this);
 319         _configure_button_action->setVisible(
 320                 !opts->binding().properties().empty());
 321         _configure_button.set_popup(opts);
 322 }
 323
 324 void SamplingBar::on_sample_rate_changed()
 325 {
 326         commit_sample_rate();
 327 }
 328
 329 void SamplingBar::on_run_stop()
 330 {
 331         commit_sample_rate();
 332         run_stop();
 333 }
 334
 335 } // namespace toolbars
 336 } // namespace pv