pv/view/logicsignal.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 <math.h>
  24
  25 #include <QFormLayout>
  26 #include <QToolBar>
  27
  28 #include "logicsignal.h"
  29 #include "view.h"
  30
  31 #include <pv/sigsession.h>
  32 #include <pv/device/devinst.h>
  33 #include <pv/data/logic.h>
  34 #include <pv/data/logicsnapshot.h>
  35 #include <pv/view/view.h>
  36
  37 using std::deque;
  38 using std::max;
  39 using std::min;
  40 using std::pair;
  41 using std::shared_ptr;
  42 using std::vector;
  43
  44 namespace pv {
  45 namespace view {
  46
  47 const float LogicSignal::Oversampling = 2.0f;
  48
  49 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
  50 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
  51 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
  52
  53 const QColor LogicSignal::SignalColours[10] = {
  54         QColor(0x16, 0x19, 0x1A),       // Black
  55         QColor(0x8F, 0x52, 0x02),       // Brown
  56         QColor(0xCC, 0x00, 0x00),       // Red
  57         QColor(0xF5, 0x79, 0x00),       // Orange
  58         QColor(0xED, 0xD4, 0x00),       // Yellow
  59         QColor(0x73, 0xD2, 0x16),       // Green
  60         QColor(0x34, 0x65, 0xA4),       // Blue
  61         QColor(0x75, 0x50, 0x7B),       // Violet
  62         QColor(0x88, 0x8A, 0x85),       // Grey
  63         QColor(0xEE, 0xEE, 0xEC),       // White
  64 };
  65
  66 LogicSignal::LogicSignal(shared_ptr<pv::device::DevInst> dev_inst,
  67         const sr_channel *const probe, shared_ptr<data::Logic> data) :
  68         Signal(dev_inst, probe),
  69         _data(data),
  70         _trigger_none(NULL),
  71         _trigger_rising(NULL),
  72         _trigger_high(NULL),
  73         _trigger_falling(NULL),
  74         _trigger_low(NULL),
  75         _trigger_change(NULL)
  76 {
  77         _colour = SignalColours[probe->index % countof(SignalColours)];
  78 }
  79
  80 LogicSignal::~LogicSignal()
  81 {
  82 }
  83
  84 shared_ptr<pv::data::SignalData> LogicSignal::data() const
  85 {
  86         return _data;
  87 }
  88
  89 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
  90 {
  91         return _data;
  92 }
  93
  94 void LogicSignal::paint_back(QPainter &p, int left, int right)
  95 {
  96         if (_probe->enabled)
  97                 paint_axis(p, get_y(), left, right);
  98 }
  99
 100 void LogicSignal::paint_mid(QPainter &p, int left, int right)
 101 {
 102         using pv::view::View;
 103
 104         QLineF *line;
 105
 106         vector< pair<int64_t, bool> > edges;
 107
 108         assert(_probe);
 109         assert(_data);
 110         assert(right >= left);
 111
 112         assert(_view);
 113         const int y = _v_offset - _view->v_offset();
 114
 115         const double scale = _view->scale();
 116         assert(scale > 0);
 117
 118         const double offset = _view->offset();
 119
 120         if (!_probe->enabled)
 121                 return;
 122
 123         const float high_offset = y - View::SignalHeight + 0.5f;
 124         const float low_offset = y + 0.5f;
 125
 126         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 127                 _data->get_snapshots();
 128         if (snapshots.empty())
 129                 return;
 130
 131         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 132                 snapshots.front();
 133
 134         double samplerate = _data->samplerate();
 135
 136         // Show sample rate as 1Hz when it is unknown
 137         if (samplerate == 0.0)
 138                 samplerate = 1.0;
 139
 140         const double pixels_offset = offset / scale;
 141         const double start_time = _data->get_start_time();
 142         const int64_t last_sample = snapshot->get_sample_count() - 1;
 143         const double samples_per_pixel = samplerate * scale;
 144         const double start = samplerate * (offset - start_time);
 145         const double end = start + samples_per_pixel * (right - left);
 146
 147         snapshot->get_subsampled_edges(edges,
 148                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 149                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 150                 samples_per_pixel / Oversampling, _probe->index);
 151         assert(edges.size() >= 2);
 152
 153         // Paint the edges
 154         const unsigned int edge_count = edges.size() - 2;
 155         QLineF *const edge_lines = new QLineF[edge_count];
 156         line = edge_lines;
 157
 158         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 159                 const float x = ((*i).first / samples_per_pixel -
 160                         pixels_offset) + left;
 161                 *line++ = QLineF(x, high_offset, x, low_offset);
 162         }
 163
 164         p.setPen(EdgeColour);
 165         p.drawLines(edge_lines, edge_count);
 166         delete[] edge_lines;
 167
 168         // Paint the caps
 169         const unsigned int max_cap_line_count = edges.size();
 170         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 171
 172         p.setPen(HighColour);
 173         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 174                 pixels_offset, left, high_offset);
 175         p.setPen(LowColour);
 176         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 177                 pixels_offset, left, low_offset);
 178
 179         delete[] cap_lines;
 180 }
 181
 182 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 183         vector< pair<int64_t, bool> > &edges, bool level,
 184         double samples_per_pixel, double pixels_offset, float x_offset,
 185         float y_offset)
 186 {
 187         QLineF *line = lines;
 188
 189         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 190                 if ((*i).second == level) {
 191                         *line++ = QLineF(
 192                                 ((*i).first / samples_per_pixel -
 193                                         pixels_offset) + x_offset, y_offset,
 194                                 ((*(i+1)).first / samples_per_pixel -
 195                                         pixels_offset) + x_offset, y_offset);
 196                 }
 197
 198         p.drawLines(lines, line - lines);
 199 }
 200
 201 void LogicSignal::init_trigger_actions(QWidget *parent)
 202 {
 203         _trigger_none = new QAction(QIcon(":/icons/trigger-none.svg"),
 204                 tr("No trigger"), parent);
 205         _trigger_none->setCheckable(true);
 206         connect(_trigger_none, SIGNAL(triggered()),
 207                 this, SLOT(on_trigger_none()));
 208
 209         _trigger_rising = new QAction(QIcon(":/icons/trigger-rising.svg"),
 210                 tr("Trigger on rising edge"), parent);
 211         _trigger_rising->setCheckable(true);
 212         connect(_trigger_rising, SIGNAL(triggered()),
 213                 this, SLOT(on_trigger_rising()));
 214
 215         _trigger_high = new QAction(QIcon(":/icons/trigger-high.svg"),
 216                 tr("Trigger on high level"), parent);
 217         _trigger_high->setCheckable(true);
 218         connect(_trigger_high, SIGNAL(triggered()),
 219                 this, SLOT(on_trigger_high()));
 220
 221         _trigger_falling = new QAction(QIcon(":/icons/trigger-falling.svg"),
 222                 tr("Trigger on falling edge"), parent);
 223         _trigger_falling->setCheckable(true);
 224         connect(_trigger_falling, SIGNAL(triggered()),
 225                 this, SLOT(on_trigger_falling()));
 226
 227         _trigger_low = new QAction(QIcon(":/icons/trigger-low.svg"),
 228                 tr("Trigger on low level"), parent);
 229         _trigger_low->setCheckable(true);
 230         connect(_trigger_low, SIGNAL(triggered()),
 231                 this, SLOT(on_trigger_low()));
 232
 233         _trigger_change = new QAction(QIcon(":/icons/trigger-change.svg"),
 234                 tr("Trigger on rising or falling edge"), parent);
 235         _trigger_change->setCheckable(true);
 236         connect(_trigger_change, SIGNAL(triggered()),
 237                 this, SLOT(on_trigger_change()));
 238 }
 239
 240 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 241 {
 242         GVariant *gvar;
 243
 244         Signal::populate_popup_form(parent, form);
 245
 246         // Add the trigger actions
 247         assert(_dev_inst);
 248         if ((gvar = _dev_inst->list_config(NULL, SR_CONF_TRIGGER_TYPE)))
 249         {
 250                 const char *const trig_types =
 251                         g_variant_get_string(gvar, NULL);
 252
 253                 if (trig_types && trig_types[0] != '\0')
 254                 {
 255                         _trigger_bar = new QToolBar(parent);
 256
 257                         init_trigger_actions(_trigger_bar);
 258                         _trigger_bar->addAction(_trigger_none);
 259                         add_trigger_action(trig_types, 'r', _trigger_rising);
 260                         add_trigger_action(trig_types, '1', _trigger_high);
 261                         add_trigger_action(trig_types, 'f', _trigger_falling);
 262                         add_trigger_action(trig_types, '0', _trigger_low);
 263                         add_trigger_action(trig_types, 'c', _trigger_change);
 264
 265                         update_trigger_actions();
 266
 267                         form->addRow(tr("Trigger"), _trigger_bar);
 268                 }
 269
 270                 g_variant_unref(gvar);
 271         }
 272 }
 273
 274 void LogicSignal::add_trigger_action(const char *trig_types, char type,
 275         QAction *action)
 276 {
 277         while(*trig_types)
 278                 if(*trig_types++ == type) {
 279                         _trigger_bar->addAction(action);
 280                         break;
 281                 }
 282 }
 283
 284 void LogicSignal::update_trigger_actions()
 285 {
 286         const char cur_trigger = _probe->trigger ?
 287                 _probe->trigger[0] : '\0';
 288         _trigger_none->setChecked(cur_trigger == '\0');
 289         _trigger_rising->setChecked(cur_trigger == 'r');
 290         _trigger_high->setChecked(cur_trigger == '1');
 291         _trigger_falling->setChecked(cur_trigger == 'f');
 292         _trigger_low->setChecked(cur_trigger == '0');
 293         _trigger_change->setChecked(cur_trigger == 'c');
 294 }
 295
 296 void LogicSignal::set_trigger(char type)
 297 {
 298         const char trigger_type_string[2] = {type, 0};
 299         const char *const trigger_string =
 300                 (type != 0) ? trigger_type_string : NULL;
 301
 302         assert(_dev_inst);
 303         const sr_dev_inst *const sdi = _dev_inst->dev_inst();
 304         assert(sdi);
 305
 306         const int probe_count = g_slist_length(sdi->channels);
 307         assert(probe_count > 0);
 308
 309         assert(_probe && _probe->index < probe_count);
 310
 311         for (int i = 0; i < probe_count; i++) {
 312                 sr_dev_trigger_set(sdi, i, (i == _probe->index) ?
 313                         trigger_string : NULL);
 314         }
 315
 316         update_trigger_actions();
 317 }
 318
 319 void LogicSignal::on_trigger_none()
 320 {
 321         set_trigger('\0');
 322 }
 323
 324 void LogicSignal::on_trigger_rising()
 325 {
 326         set_trigger('r');
 327 }
 328
 329 void LogicSignal::on_trigger_high()
 330 {
 331         set_trigger('1');
 332 }
 333
 334 void LogicSignal::on_trigger_falling()
 335 {
 336         set_trigger('f');
 337 }
 338
 339 void LogicSignal::on_trigger_low()
 340 {
 341         set_trigger('0');
 342 }
 343
 344 void LogicSignal::on_trigger_change()
 345 {
 346         set_trigger('c');
 347 }
 348
 349 } // namespace view
 350 } // namespace pv