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