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::RecordLengths[20] = {
  44         1000,
  45         2500,
  46         5000,
  47         10000,
  48         25000,
  49         50000,
  50         100000,
  51         250000,
  52         500000,
  53         1000000,
  54         2000000,
  55         5000000,
  56         10000000,
  57         25000000,
  58         50000000,
  59         100000000,
  60         250000000,
  61         500000000,
  62         1000000000,
  63         10000000000ULL,
  64 };
  65
  66 const uint64_t SamplingBar::DefaultRecordLength = 1000000;
  67
  68 SamplingBar::SamplingBar(SigSession &session, QWidget *parent) :
  69         QToolBar("Sampling Bar", parent),
  70         _session(session),
  71         _device_selector(this),
  72         _updating_device_selector(false),
  73         _configure_button(this),
  74         _configure_button_action(NULL),
  75         _probes_button(this),
  76         _record_length_selector(this),
  77         _sample_rate("Hz", this),
  78         _updating_sample_rate(false),
  79         _icon_red(":/icons/status-red.svg"),
  80         _icon_green(":/icons/status-green.svg"),
  81         _icon_grey(":/icons/status-grey.svg"),
  82         _run_stop_button(this)
  83 {
  84         connect(&_run_stop_button, SIGNAL(clicked()),
  85                 this, SLOT(on_run_stop()));
  86         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  87                 this, SLOT(on_device_selected()));
  88         connect(&_sample_rate, SIGNAL(value_changed()),
  89                 this, SLOT(on_sample_rate_changed()));
  90
  91         for (size_t i = 0; i < countof(RecordLengths); i++)
  92         {
  93                 const uint64_t &l = RecordLengths[i];
  94                 char *const text = sr_si_string_u64(l, " samples");
  95                 _record_length_selector.addItem(QString::fromUtf8(text),
  96                         qVariantFromValue(l));
  97                 g_free(text);
  98
  99                 if (l == DefaultRecordLength)
 100                         _record_length_selector.setCurrentIndex(i);
 101         }
 102
 103         set_capture_state(pv::SigSession::Stopped);
 104
 105         _configure_button.setIcon(QIcon::fromTheme("configure",
 106                 QIcon(":/icons/configure.png")));
 107
 108         _probes_button.setIcon(QIcon::fromTheme("probes",
 109                 QIcon(":/icons/probes.svg")));
 110
 111         _run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 112
 113         addWidget(&_device_selector);
 114         _configure_button_action = addWidget(&_configure_button);
 115         addWidget(&_probes_button);
 116         addWidget(&_record_length_selector);
 117         addWidget(&_sample_rate);
 118
 119         addWidget(&_run_stop_button);
 120 }
 121
 122 void SamplingBar::set_device_list(
 123         const std::list<struct sr_dev_inst*> &devices)
 124 {
 125         _updating_device_selector = true;
 126
 127         _device_selector.clear();
 128
 129         BOOST_FOREACH (sr_dev_inst *sdi, devices) {
 130                 const string title = DeviceManager::format_device_title(sdi);
 131                 _device_selector.addItem(title.c_str(),
 132                         qVariantFromValue((void*)sdi));
 133         }
 134
 135         _updating_device_selector = false;
 136
 137         on_device_selected();
 138 }
 139
 140 struct sr_dev_inst* SamplingBar::get_selected_device() const
 141 {
 142         const int index = _device_selector.currentIndex();
 143         if (index < 0)
 144                 return NULL;
 145
 146         return (sr_dev_inst*)_device_selector.itemData(
 147                 index).value<void*>();
 148 }
 149
 150 void SamplingBar::set_selected_device(struct sr_dev_inst *const sdi)
 151 {
 152         for (int i = 0; i < _device_selector.count(); i++)
 153                 if (sdi == _device_selector.itemData(i).value<void*>()) {
 154                         _device_selector.setCurrentIndex(i);
 155                         return;
 156                 }
 157 }
 158
 159 uint64_t SamplingBar::get_record_length() const
 160 {
 161         const int index = _record_length_selector.currentIndex();
 162         if (index < 0)
 163                 return 0;
 164
 165         return _record_length_selector.itemData(index).value<uint64_t>();
 166 }
 167
 168 void SamplingBar::set_capture_state(pv::SigSession::capture_state state)
 169 {
 170         const QIcon *icons[] = {&_icon_grey, &_icon_red, &_icon_green};
 171         _run_stop_button.setIcon(*icons[state]);
 172         _run_stop_button.setText((state == pv::SigSession::Stopped) ?
 173                 tr("Run") : tr("Stop"));
 174 }
 175
 176 void SamplingBar::update_sample_rate_selector()
 177 {
 178         const sr_dev_inst *const sdi = get_selected_device();
 179         GVariant *gvar_dict, *gvar_list;
 180         const uint64_t *elements = NULL;
 181         gsize num_elements;
 182
 183         if (!sdi)
 184                 return;
 185
 186         _updating_sample_rate = true;
 187
 188         if (sr_config_list(sdi->driver, sdi, NULL,
 189                         SR_CONF_SAMPLERATE, &gvar_dict) != SR_OK)
 190         {
 191                 _sample_rate.show_none();
 192                 _updating_sample_rate = false;
 193                 return;
 194         }
 195
 196         if ((gvar_list = g_variant_lookup_value(gvar_dict,
 197                         "samplerate-steps", G_VARIANT_TYPE("at"))))
 198         {
 199                 elements = (const uint64_t *)g_variant_get_fixed_array(
 200                                 gvar_list, &num_elements, sizeof(uint64_t));
 201                 _sample_rate.show_min_max_step(elements[0], elements[1],
 202                         elements[2]);
 203                 g_variant_unref(gvar_list);
 204         }
 205         else if ((gvar_list = g_variant_lookup_value(gvar_dict,
 206                         "samplerates", G_VARIANT_TYPE("at"))))
 207         {
 208                 elements = (const uint64_t *)g_variant_get_fixed_array(
 209                                 gvar_list, &num_elements, sizeof(uint64_t));
 210                 _sample_rate.show_list(elements, num_elements);
 211                 g_variant_unref(gvar_list);
 212         }
 213         _updating_sample_rate = false;
 214
 215         g_variant_unref(gvar_dict);
 216         update_sample_rate_selector_value();
 217 }
 218
 219 void SamplingBar::update_sample_rate_selector_value()
 220 {
 221         sr_dev_inst *const sdi = get_selected_device();
 222         GVariant *gvar;
 223         uint64_t samplerate;
 224
 225         assert(sdi);
 226
 227         if (sr_config_get(sdi->driver, sdi, NULL,
 228                 SR_CONF_SAMPLERATE, &gvar) != SR_OK) {
 229                 qDebug() <<
 230                                 "WARNING: Failed to get value of sample rate";
 231                 return;
 232         }
 233         samplerate = g_variant_get_uint64(gvar);
 234         g_variant_unref(gvar);
 235
 236         _updating_sample_rate = true;
 237         _sample_rate.set_value(samplerate);
 238         _updating_sample_rate = false;
 239 }
 240
 241 void SamplingBar::commit_sample_rate()
 242 {
 243         uint64_t sample_rate = 0;
 244
 245         sr_dev_inst *const sdi = get_selected_device();
 246         assert(sdi);
 247
 248         sample_rate = _sample_rate.value();
 249         if (sample_rate == 0)
 250                 return;
 251
 252         // Set the samplerate
 253         if (sr_config_set(sdi, NULL, SR_CONF_SAMPLERATE,
 254                 g_variant_new_uint64(sample_rate)) != SR_OK) {
 255                 qDebug() << "Failed to configure samplerate.";
 256                 return;
 257         }
 258 }
 259
 260 void SamplingBar::on_device_selected()
 261 {
 262         using namespace pv::popups;
 263
 264         if (_updating_device_selector)
 265                 return;
 266
 267         update_sample_rate_selector();
 268
 269         sr_dev_inst *const sdi = get_selected_device();
 270         _session.set_device(sdi);
 271
 272         // Update the configure popup
 273         DeviceOptions *const opts = new DeviceOptions(sdi, this);
 274         _configure_button_action->setVisible(
 275                 !opts->binding().properties().empty());
 276         _configure_button.set_popup(opts);
 277
 278         // Update the probes popup
 279         Probes *const probes = new Probes(_session, this);
 280         _probes_button.set_popup(probes);
 281 }
 282
 283 void SamplingBar::on_sample_rate_changed()
 284 {
 285         if (!_updating_sample_rate)
 286                 commit_sample_rate();
 287 }
 288
 289 void SamplingBar::on_run_stop()
 290 {
 291         commit_sample_rate();
 292         run_stop();
 293 }
 294
 295 } // namespace toolbars
 296 } // namespace pv