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