pv/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/dialogs/deviceoptions.h>
  35
  36 namespace pv {
  37
  38 const uint64_t SamplingBar::RecordLengths[20] = {
  39         1000,
  40         2500,
  41         5000,
  42         10000,
  43         25000,
  44         50000,
  45         100000,
  46         250000,
  47         500000,
  48         1000000,
  49         2000000,
  50         5000000,
  51         10000000,
  52         25000000,
  53         50000000,
  54         100000000,
  55         250000000,
  56         500000000,
  57         1000000000,
  58         10000000000ULL,
  59 };
  60
  61 const uint64_t SamplingBar::DefaultRecordLength = 1000000;
  62
  63 SamplingBar::SamplingBar(QWidget *parent) :
  64         QToolBar("Sampling Bar", parent),
  65         _device_selector(this),
  66         _configure_button(this),
  67         _record_length_selector(this),
  68         _sample_rate_list(this),
  69         _icon_green(":/icons/status-green.svg"),
  70         _icon_grey(":/icons/status-grey.svg"),
  71         _run_stop_button(this)
  72 {
  73         connect(&_run_stop_button, SIGNAL(clicked()),
  74                 this, SIGNAL(run_stop()));
  75         connect(&_device_selector, SIGNAL(currentIndexChanged (int)),
  76                 this, SLOT(on_device_selected()));
  77         connect(&_configure_button, SIGNAL(clicked()),
  78                 this, SLOT(configure()));
  79
  80         _sample_rate_value.setDecimals(0);
  81         _sample_rate_value.setSuffix("Hz");
  82
  83         for (size_t i = 0; i < countof(RecordLengths); i++)
  84         {
  85                 const uint64_t &l = RecordLengths[i];
  86                 char *const text = sr_si_string_u64(l, " samples");
  87                 _record_length_selector.addItem(QString(text),
  88                         qVariantFromValue(l));
  89                 g_free(text);
  90
  91                 if (l == DefaultRecordLength)
  92                         _record_length_selector.setCurrentIndex(i);
  93         }
  94
  95         set_sampling(false);
  96
  97         _configure_button.setIcon(QIcon::fromTheme("configure",
  98                 QIcon(":/icons/configure.png")));
  99
 100         _run_stop_button.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 101
 102         addWidget(&_device_selector);
 103         addWidget(&_configure_button);
 104         addWidget(&_record_length_selector);
 105         _sample_rate_list_action = addWidget(&_sample_rate_list);
 106         _sample_rate_value_action = addWidget(&_sample_rate_value);
 107         addWidget(&_run_stop_button);
 108
 109         connect(&_sample_rate_list, SIGNAL(currentIndexChanged(int)),
 110                 this, SLOT(on_sample_rate_changed()));
 111         connect(&_sample_rate_value, SIGNAL(editingFinished()),
 112                 this, SLOT(on_sample_rate_changed()));
 113 }
 114
 115 void SamplingBar::set_device_list(
 116         const std::list<struct sr_dev_inst*> &devices)
 117 {
 118         _device_selector.clear();
 119
 120         BOOST_FOREACH (sr_dev_inst *sdi, devices) {
 121                 QString title;
 122                 if (sdi->vendor && sdi->vendor[0])
 123                         title += sdi->vendor + QString(" ");
 124                 if (sdi->model && sdi->model[0])
 125                         title += sdi->model + QString(" ");
 126                 if (sdi->version && sdi->version[0])
 127                         title += sdi->version + QString(" ");
 128
 129                 _device_selector.addItem(title, qVariantFromValue(
 130                         (void*)sdi));
 131         }
 132
 133         update_sample_rate_selector();
 134 }
 135
 136 struct sr_dev_inst* SamplingBar::get_selected_device() const
 137 {
 138         const int index = _device_selector.currentIndex();
 139         if (index < 0)
 140                 return NULL;
 141
 142         return (sr_dev_inst*)_device_selector.itemData(
 143                 index).value<void*>();
 144 }
 145
 146 uint64_t SamplingBar::get_record_length() const
 147 {
 148         const int index = _record_length_selector.currentIndex();
 149         if (index < 0)
 150                 return 0;
 151
 152         return _record_length_selector.itemData(index).value<uint64_t>();
 153 }
 154
 155 void SamplingBar::set_sampling(bool sampling)
 156 {
 157         _run_stop_button.setIcon(sampling ? _icon_green : _icon_grey);
 158         _run_stop_button.setText(sampling ? "Stop" : "Run");
 159 }
 160
 161 void SamplingBar::update_sample_rate_selector()
 162 {
 163         const sr_dev_inst *const sdi = get_selected_device();
 164         const struct sr_samplerates *samplerates;
 165
 166         assert(_sample_rate_value_action);
 167         assert(_sample_rate_list_action);
 168
 169         if (!sdi)
 170                 return;
 171
 172         if (sr_config_list(sdi->driver, SR_CONF_SAMPLERATE,
 173                 (const void **)&samplerates, sdi) != SR_OK)
 174                 return;
 175
 176         _sample_rate_list_action->setVisible(false);
 177         _sample_rate_value_action->setVisible(false);
 178
 179         if (samplerates->step)
 180         {
 181                 _sample_rate_value.setRange(
 182                         samplerates->low, samplerates->high);
 183                 _sample_rate_value.setSingleStep(samplerates->step);
 184                 _sample_rate_value_action->setVisible(true);
 185         }
 186         else
 187         {
 188                 _sample_rate_list.clear();
 189                 for (const uint64_t *rate = samplerates->list;
 190                      *rate; rate++)
 191                         _sample_rate_list.addItem(
 192                                 sr_samplerate_string(*rate),
 193                                 qVariantFromValue(*rate));
 194                 _sample_rate_list.show();
 195                 _sample_rate_list_action->setVisible(true);
 196         }
 197
 198         update_sample_rate_selector_value();
 199 }
 200
 201 void SamplingBar::update_sample_rate_selector_value()
 202 {
 203         sr_dev_inst *const sdi = get_selected_device();
 204         assert(sdi);
 205
 206         uint64_t *samplerate = NULL;
 207         if(sr_config_get(sdi->driver, SR_CONF_SAMPLERATE,
 208                 (const void**)&samplerate, sdi) != SR_OK) {
 209                 qDebug() <<
 210                                 "WARNING: Failed to get value of sample rate";
 211                 return;
 212         }
 213
 214         assert(_sample_rate_value_action);
 215         assert(_sample_rate_list_action);
 216
 217         if (_sample_rate_value_action->isVisible())
 218                 _sample_rate_value.setValue(*samplerate);
 219         else if (_sample_rate_list_action->isVisible())
 220         {
 221                 for(int i = 0; i < _sample_rate_list.count(); i++)
 222                         if(*samplerate == _sample_rate_list.itemData(
 223                                 i).value<uint64_t>())
 224                                 _sample_rate_list.setCurrentIndex(i);
 225         }
 226 }
 227
 228 void SamplingBar::commit_sample_rate()
 229 {
 230         uint64_t sample_rate = 0;
 231
 232         sr_dev_inst *const sdi = get_selected_device();
 233         assert(sdi);
 234
 235         assert(_sample_rate_value_action);
 236         assert(_sample_rate_list_action);
 237
 238         if (_sample_rate_value_action->isVisible())
 239                 sample_rate = (uint64_t)_sample_rate_value.value();
 240         else if (_sample_rate_list_action->isVisible())
 241         {
 242                 const int index = _sample_rate_list.currentIndex();
 243                 if (index >= 0)
 244                         sample_rate = _sample_rate_list.itemData(
 245                                 index).value<uint64_t>();
 246         }
 247
 248         // Set the samplerate
 249         if (sr_config_set(sdi, SR_CONF_SAMPLERATE,
 250                 &sample_rate) != SR_OK) {
 251                 qDebug() << "Failed to configure samplerate.";
 252                 return;
 253         }
 254 }
 255
 256 void SamplingBar::on_device_selected()
 257 {
 258         update_sample_rate_selector();
 259 }
 260
 261 void SamplingBar::on_sample_rate_changed()
 262 {
 263         commit_sample_rate();
 264 }
 265
 266 void SamplingBar::configure()
 267 {
 268         commit_sample_rate();
 269
 270         sr_dev_inst *const sdi = get_selected_device();
 271         assert(sdi);
 272
 273         pv::dialogs::DeviceOptions dlg(this, sdi);
 274         dlg.exec();
 275
 276         update_sample_rate_selector_value();
 277 }
 278
 279 } // namespace pv