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