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