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         _icon_red(":/icons/status-red.svg"),
  57         _icon_green(":/icons/status-green.svg"),
  58         _icon_grey(":/icons/status-grey.svg"),
  59         _run_stop_button(this)
  60 {
  61         connect(&_run_stop_button, SIGNAL(clicked()),
  62                 this, SLOT(on_run_stop()));
  63         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  64                 this, SLOT(on_device_selected()));
  65         connect(&_sample_count, SIGNAL(value_changed()),
  66                 this, SLOT(on_sample_count_changed()));
  67         connect(&_sample_rate, SIGNAL(value_changed()),
  68                 this, SLOT(on_sample_rate_changed()));
  69
  70         _sample_count.show_min_max_step(0, UINT64_MAX, 1);
  71         _sample_count.set_value(DefaultRecordLength);
  72
  73         set_capture_state(pv::SigSession::Stopped);
  74
  75         _configure_button.setIcon(QIcon::fromTheme("configure",
  76                 QIcon(":/icons/configure.png")));
  77
  78         _probes_button.setIcon(QIcon::fromTheme("probes",
  79                 QIcon(":/icons/probes.svg")));
  80
  81         _run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
  82
  83         addWidget(&_device_selector);
  84         _configure_button_action = addWidget(&_configure_button);
  85         addWidget(&_probes_button);
  86         addWidget(&_sample_count);
  87         addWidget(&_sample_rate);
  88
  89         addWidget(&_run_stop_button);
  90 }
  91
  92 void SamplingBar::set_device_list(
  93         const std::list<struct sr_dev_inst*> &devices)
  94 {
  95         _updating_device_selector = true;
  96
  97         _device_selector.clear();
  98
  99         BOOST_FOREACH (sr_dev_inst *sdi, devices) {
 100                 const string title = DeviceManager::format_device_title(sdi);
 101                 _device_selector.addItem(title.c_str(),
 102                         qVariantFromValue((void*)sdi));
 103         }
 104
 105         _updating_device_selector = false;
 106
 107         on_device_selected();
 108 }
 109
 110 struct sr_dev_inst* SamplingBar::get_selected_device() const
 111 {
 112         const int index = _device_selector.currentIndex();
 113         if (index < 0)
 114                 return NULL;
 115
 116         return (sr_dev_inst*)_device_selector.itemData(
 117                 index).value<void*>();
 118 }
 119
 120 void SamplingBar::set_selected_device(struct sr_dev_inst *const sdi)
 121 {
 122         for (int i = 0; i < _device_selector.count(); i++)
 123                 if (sdi == _device_selector.itemData(i).value<void*>()) {
 124                         _device_selector.setCurrentIndex(i);
 125                         return;
 126                 }
 127 }
 128
 129 uint64_t SamplingBar::get_record_length() const
 130 {
 131         return _sample_count.value();
 132 }
 133
 134 void SamplingBar::set_capture_state(pv::SigSession::capture_state state)
 135 {
 136         const QIcon *icons[] = {&_icon_grey, &_icon_red, &_icon_green};
 137         _run_stop_button.setIcon(*icons[state]);
 138         _run_stop_button.setText((state == pv::SigSession::Stopped) ?
 139                 tr("Run") : tr("Stop"));
 140 }
 141
 142 void SamplingBar::update_sample_rate_selector()
 143 {
 144         const sr_dev_inst *const sdi = get_selected_device();
 145         GVariant *gvar_dict, *gvar_list;
 146         const uint64_t *elements = NULL;
 147         gsize num_elements;
 148
 149         if (!sdi)
 150                 return;
 151
 152         _updating_sample_rate = true;
 153
 154         if (sr_config_list(sdi->driver, sdi, NULL,
 155                         SR_CONF_SAMPLERATE, &gvar_dict) != SR_OK)
 156         {
 157                 _sample_rate.show_none();
 158                 _updating_sample_rate = false;
 159                 return;
 160         }
 161
 162         if ((gvar_list = g_variant_lookup_value(gvar_dict,
 163                         "samplerate-steps", G_VARIANT_TYPE("at"))))
 164         {
 165                 elements = (const uint64_t *)g_variant_get_fixed_array(
 166                                 gvar_list, &num_elements, sizeof(uint64_t));
 167                 _sample_rate.show_min_max_step(elements[0], elements[1],
 168                         elements[2]);
 169                 g_variant_unref(gvar_list);
 170         }
 171         else if ((gvar_list = g_variant_lookup_value(gvar_dict,
 172                         "samplerates", G_VARIANT_TYPE("at"))))
 173         {
 174                 elements = (const uint64_t *)g_variant_get_fixed_array(
 175                                 gvar_list, &num_elements, sizeof(uint64_t));
 176                 _sample_rate.show_list(elements, num_elements);
 177                 g_variant_unref(gvar_list);
 178         }
 179         _updating_sample_rate = false;
 180
 181         g_variant_unref(gvar_dict);
 182         update_sample_rate_selector_value();
 183 }
 184
 185 void SamplingBar::update_sample_rate_selector_value()
 186 {
 187         sr_dev_inst *const sdi = get_selected_device();
 188         GVariant *gvar;
 189         uint64_t samplerate;
 190
 191         assert(sdi);
 192
 193         if (sr_config_get(sdi->driver, sdi, NULL,
 194                 SR_CONF_SAMPLERATE, &gvar) != SR_OK) {
 195                 qDebug() <<
 196                                 "WARNING: Failed to get value of sample rate";
 197                 return;
 198         }
 199         samplerate = g_variant_get_uint64(gvar);
 200         g_variant_unref(gvar);
 201
 202         _updating_sample_rate = true;
 203         _sample_rate.set_value(samplerate);
 204         _updating_sample_rate = false;
 205 }
 206
 207 void SamplingBar::commit_sample_count()
 208 {
 209         uint64_t sample_count = 0;
 210
 211         sr_dev_inst *const sdi = get_selected_device();
 212         assert(sdi);
 213
 214         sample_count = _sample_count.value();
 215
 216         // Set the sample count
 217         if (sr_config_set(sdi, NULL, SR_CONF_LIMIT_SAMPLES,
 218                 g_variant_new_uint64(sample_count)) != SR_OK) {
 219                 qDebug() << "Failed to configure sample count.";
 220                 return;
 221         }
 222 }
 223
 224 void SamplingBar::commit_sample_rate()
 225 {
 226         uint64_t sample_rate = 0;
 227
 228         sr_dev_inst *const sdi = get_selected_device();
 229         assert(sdi);
 230
 231         sample_rate = _sample_rate.value();
 232         if (sample_rate == 0)
 233                 return;
 234
 235         // Set the samplerate
 236         if (sr_config_set(sdi, NULL, SR_CONF_SAMPLERATE,
 237                 g_variant_new_uint64(sample_rate)) != SR_OK) {
 238                 qDebug() << "Failed to configure samplerate.";
 239                 return;
 240         }
 241 }
 242
 243 void SamplingBar::on_device_selected()
 244 {
 245         using namespace pv::popups;
 246
 247         if (_updating_device_selector)
 248                 return;
 249
 250         update_sample_rate_selector();
 251
 252         sr_dev_inst *const sdi = get_selected_device();
 253         _session.set_device(sdi);
 254
 255         // Update the configure popup
 256         DeviceOptions *const opts = new DeviceOptions(sdi, this);
 257         _configure_button_action->setVisible(
 258                 !opts->binding().properties().empty());
 259         _configure_button.set_popup(opts);
 260
 261         // Update the probes popup
 262         Probes *const probes = new Probes(_session, this);
 263         _probes_button.set_popup(probes);
 264 }
 265
 266 void SamplingBar::on_sample_count_changed()
 267 {
 268         commit_sample_count();
 269 }
 270
 271 void SamplingBar::on_sample_rate_changed()
 272 {
 273         if (!_updating_sample_rate)
 274                 commit_sample_rate();
 275 }
 276
 277 void SamplingBar::on_run_stop()
 278 {
 279         commit_sample_rate();
 280         run_stop();
 281 }
 282
 283 } // namespace toolbars
 284 } // namespace pv