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 #include <pv/popups/probes.h>
  37
  38 using std::string;
  39
  40 namespace pv {
  41 namespace toolbars {
  42
  43 const uint64_t SamplingBar::DefaultRecordLength = 1000000;
  44
  45 SamplingBar::SamplingBar(SigSession &session, QWidget *parent) :
  46         QToolBar("Sampling Bar", parent),
  47         _session(session),
  48         _device_selector(this),
  49         _updating_device_selector(false),
  50         _configure_button(this),
  51         _configure_button_action(NULL),
  52         _probes_button(this),
  53         _sample_count(" samples", this),
  54         _sample_rate("Hz", this),
  55         _updating_sample_rate(false),
  56         _updating_sample_count(false),
  57         _sample_count_supported(false),
  58         _icon_red(":/icons/status-red.svg"),
  59         _icon_green(":/icons/status-green.svg"),
  60         _icon_grey(":/icons/status-grey.svg"),
  61         _run_stop_button(this)
  62 {
  63         connect(&_run_stop_button, SIGNAL(clicked()),
  64                 this, SLOT(on_run_stop()));
  65         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  66                 this, SLOT(on_device_selected()));
  67         connect(&_sample_count, SIGNAL(value_changed()),
  68                 this, SLOT(on_sample_count_changed()));
  69         connect(&_sample_rate, SIGNAL(value_changed()),
  70                 this, SLOT(on_sample_rate_changed()));
  71
  72         _sample_count.show_min_max_step(0, UINT64_MAX, 1);
  73
  74         set_capture_state(pv::SigSession::Stopped);
  75
  76         _configure_button.setIcon(QIcon::fromTheme("configure",
  77                 QIcon(":/icons/configure.png")));
  78
  79         _probes_button.setIcon(QIcon::fromTheme("probes",
  80                 QIcon(":/icons/probes.svg")));
  81
  82         _run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
  83
  84         addWidget(&_device_selector);
  85         _configure_button_action = addWidget(&_configure_button);
  86         addWidget(&_probes_button);
  87         addWidget(&_sample_count);
  88         addWidget(&_sample_rate);
  89
  90         addWidget(&_run_stop_button);
  91 }
  92
  93 void SamplingBar::set_device_list(
  94         const std::list<struct sr_dev_inst*> &devices)
  95 {
  96         _updating_device_selector = true;
  97
  98         _device_selector.clear();
  99
 100         BOOST_FOREACH (sr_dev_inst *sdi, devices) {
 101                 const string title = DeviceManager::format_device_title(sdi);
 102                 _device_selector.addItem(title.c_str(),
 103                         qVariantFromValue((void*)sdi));
 104         }
 105
 106         _updating_device_selector = false;
 107
 108         on_device_selected();
 109 }
 110
 111 struct sr_dev_inst* SamplingBar::get_selected_device() const
 112 {
 113         const int index = _device_selector.currentIndex();
 114         if (index < 0)
 115                 return NULL;
 116
 117         return (sr_dev_inst*)_device_selector.itemData(
 118                 index).value<void*>();
 119 }
 120
 121 void SamplingBar::set_selected_device(struct sr_dev_inst *const sdi)
 122 {
 123         for (int i = 0; i < _device_selector.count(); i++)
 124                 if (sdi == _device_selector.itemData(i).value<void*>()) {
 125                         _device_selector.setCurrentIndex(i);
 126                         return;
 127                 }
 128 }
 129
 130 void SamplingBar::set_capture_state(pv::SigSession::capture_state state)
 131 {
 132         const QIcon *icons[] = {&_icon_grey, &_icon_red, &_icon_green};
 133         _run_stop_button.setIcon(*icons[state]);
 134         _run_stop_button.setText((state == pv::SigSession::Stopped) ?
 135                 tr("Run") : tr("Stop"));
 136 }
 137
 138 void SamplingBar::update_sample_rate_selector()
 139 {
 140         const sr_dev_inst *const sdi = get_selected_device();
 141         GVariant *gvar_dict, *gvar_list;
 142         const uint64_t *elements = NULL;
 143         gsize num_elements;
 144
 145         if (!sdi)
 146                 return;
 147
 148         _updating_sample_rate = true;
 149
 150         if (sr_config_list(sdi->driver, sdi, NULL,
 151                         SR_CONF_SAMPLERATE, &gvar_dict) != SR_OK)
 152         {
 153                 _sample_rate.show_none();
 154                 _updating_sample_rate = false;
 155                 return;
 156         }
 157
 158         if ((gvar_list = g_variant_lookup_value(gvar_dict,
 159                         "samplerate-steps", G_VARIANT_TYPE("at"))))
 160         {
 161                 elements = (const uint64_t *)g_variant_get_fixed_array(
 162                                 gvar_list, &num_elements, sizeof(uint64_t));
 163                 _sample_rate.show_min_max_step(elements[0], elements[1],
 164                         elements[2]);
 165                 g_variant_unref(gvar_list);
 166         }
 167         else if ((gvar_list = g_variant_lookup_value(gvar_dict,
 168                         "samplerates", G_VARIANT_TYPE("at"))))
 169         {
 170                 elements = (const uint64_t *)g_variant_get_fixed_array(
 171                                 gvar_list, &num_elements, sizeof(uint64_t));
 172                 _sample_rate.show_list(elements, num_elements);
 173                 g_variant_unref(gvar_list);
 174         }
 175         _updating_sample_rate = false;
 176
 177         g_variant_unref(gvar_dict);
 178         update_sample_rate_selector_value();
 179 }
 180
 181 void SamplingBar::update_sample_rate_selector_value()
 182 {
 183         sr_dev_inst *const sdi = get_selected_device();
 184         GVariant *gvar;
 185         uint64_t samplerate;
 186
 187         assert(sdi);
 188
 189         if (sr_config_get(sdi->driver, sdi, NULL,
 190                 SR_CONF_SAMPLERATE, &gvar) != SR_OK) {
 191                 qDebug() <<
 192                                 "WARNING: Failed to get value of sample rate";
 193                 return;
 194         }
 195         samplerate = g_variant_get_uint64(gvar);
 196         g_variant_unref(gvar);
 197
 198         _updating_sample_rate = true;
 199         _sample_rate.set_value(samplerate);
 200         _updating_sample_rate = false;
 201 }
 202
 203 void SamplingBar::update_sample_count_selector()
 204 {
 205         sr_dev_inst *const sdi = get_selected_device();
 206         GVariant *gvar;
 207         uint64_t samplecount = 0;
 208
 209         assert(sdi);
 210
 211         if (_sample_count_supported)
 212                 _sample_count.show_min_max_step(0, UINT64_MAX, 1);
 213         else
 214                 _sample_count.show_none();
 215
 216         if (sr_config_get(sdi->driver, sdi, NULL,
 217                 SR_CONF_LIMIT_SAMPLES, &gvar) == SR_OK)
 218         {
 219                 samplecount = g_variant_get_uint64(gvar);
 220                 g_variant_unref(gvar);
 221         }
 222
 223         _updating_sample_count = true;
 224         _sample_count.set_value(samplecount);
 225         _updating_sample_count = false;
 226 }
 227
 228 void SamplingBar::commit_sample_count()
 229 {
 230         uint64_t sample_count = 0;
 231
 232         sr_dev_inst *const sdi = get_selected_device();
 233         assert(sdi);
 234
 235         sample_count = _sample_count.value();
 236
 237         // Set the sample count
 238         if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES,
 239                 g_variant_new_uint64(sample_count)) != SR_OK) {
 240                 qDebug() << "Failed to configure sample count.";
 241                 return;
 242         }
 243 }
 244
 245 void SamplingBar::commit_sample_rate()
 246 {
 247         uint64_t sample_rate = 0;
 248
 249         sr_dev_inst *const sdi = get_selected_device();
 250         assert(sdi);
 251
 252         sample_rate = _sample_rate.value();
 253         if (sample_rate == 0)
 254                 return;
 255
 256         // Set the samplerate
 257         if (sr_config_set(sdi, NULL, SR_CONF_SAMPLERATE,
 258                 g_variant_new_uint64(sample_rate)) != SR_OK) {
 259                 qDebug() << "Failed to configure samplerate.";
 260                 return;
 261         }
 262 }
 263
 264 void SamplingBar::on_device_selected()
 265 {
 266         GVariant *gvar;
 267
 268         using namespace pv::popups;
 269
 270         if (_updating_device_selector)
 271                 return;
 272
 273         sr_dev_inst *const sdi = get_selected_device();
 274         _session.set_device(sdi);
 275
 276         // Update the configure popup
 277         DeviceOptions *const opts = new DeviceOptions(sdi, this);
 278         _configure_button_action->setVisible(
 279                 !opts->binding().properties().empty());
 280         _configure_button.set_popup(opts);
 281
 282         // Update the probes popup
 283         Probes *const probes = new Probes(_session, this);
 284         _probes_button.set_popup(probes);
 285
 286         // Update supported options.
 287         _sample_count_supported = false;
 288
 289         if (sr_config_list(sdi->driver, sdi, NULL,
 290                 SR_CONF_DEVICE_OPTIONS, &gvar) == SR_OK)
 291         {
 292                 gsize num_opts;
 293                 const int *const options = (const int32_t *)g_variant_get_fixed_array(
 294                 gvar, &num_opts, sizeof(int32_t));
 295                 for (unsigned int i = 0; i < num_opts; i++)
 296                 {
 297                         switch (options[i]) {
 298                         case SR_CONF_LIMIT_SAMPLES:
 299                                 _sample_count_supported = true;
 300                                 break;
 301                         case SR_CONF_LIMIT_FRAMES:
 302                                 sr_config_set(sdi, NULL, SR_CONF_LIMIT_FRAMES,
 303                                         g_variant_new_uint64(1));
 304                                 break;
 305                         }
 306                 }
 307         }
 308
 309         // Update sweep timing widgets.
 310         update_sample_count_selector();
 311         update_sample_rate_selector();
 312
 313         if (_sample_count_supported && _sample_count.value() == 0) {
 314                 _sample_count.set_value(DefaultRecordLength);
 315                 commit_sample_count();
 316         }
 317 }
 318
 319 void SamplingBar::on_sample_count_changed()
 320 {
 321         if(!_updating_sample_count)
 322                 commit_sample_count();
 323 }
 324
 325 void SamplingBar::on_sample_rate_changed()
 326 {
 327         if (!_updating_sample_rate)
 328                 commit_sample_rate();
 329 }
 330
 331 void SamplingBar::on_run_stop()
 332 {
 333         commit_sample_rate();
 334         run_stop();
 335 }
 336
 337 } // namespace toolbars
 338 } // namespace pv