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