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