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/devinst.h>
  33 #include <pv/data/logic.h>
  34 #include <pv/data/logicsnapshot.h>
  35 #include <pv/view/view.h>
  36
  37 using boost::shared_ptr;
  38 using std::deque;
  39 using std::max;
  40 using std::min;
  41 using std::pair;
  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(pv::SigSession &session,
  67         shared_ptr<pv::DevInst> dev_inst, sr_probe *const probe,
  68         shared_ptr<data::Logic> data) :
  69         Signal(session, dev_inst, probe),
  70         _data(data),
  71         _trigger_none(NULL),
  72         _trigger_rising(NULL),
  73         _trigger_high(NULL),
  74         _trigger_falling(NULL),
  75         _trigger_low(NULL),
  76         _trigger_change(NULL)
  77 {
  78         _colour = SignalColours[probe->index % countof(SignalColours)];
  79 }
  80
  81 LogicSignal::~LogicSignal()
  82 {
  83 }
  84
  85 shared_ptr<pv::data::SignalData> LogicSignal::data() const
  86 {
  87         return _data;
  88 }
  89
  90 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
  91 {
  92         return _data;
  93 }
  94
  95 void LogicSignal::paint_back(QPainter &p, int left, int right)
  96 {
  97         if (_probe->enabled)
  98                 paint_axis(p, get_y(), left, right);
  99 }
 100
 101 void LogicSignal::paint_mid(QPainter &p, int left, int right)
 102 {
 103         using pv::view::View;
 104
 105         QLineF *line;
 106
 107         vector< pair<int64_t, bool> > edges;
 108
 109         assert(_probe);
 110         assert(_data);
 111         assert(right >= left);
 112
 113         assert(_view);
 114         const int y = _v_offset - _view->v_offset();
 115
 116         const double scale = _view->scale();
 117         assert(scale > 0);
 118
 119         const double offset = _view->offset();
 120
 121         if (!_probe->enabled)
 122                 return;
 123
 124         const float high_offset = y - View::SignalHeight + 0.5f;
 125         const float low_offset = y + 0.5f;
 126
 127         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 128                 _data->get_snapshots();
 129         if (snapshots.empty())
 130                 return;
 131
 132         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 133                 snapshots.front();
 134
 135         double samplerate = _data->samplerate();
 136
 137         // Show sample rate as 1Hz when it is unknown
 138         if (samplerate == 0.0)
 139                 samplerate = 1.0;
 140
 141         const double pixels_offset = offset / scale;
 142         const double start_time = _data->get_start_time();
 143         const int64_t last_sample = snapshot->get_sample_count() - 1;
 144         const double samples_per_pixel = samplerate * scale;
 145         const double start = samplerate * (offset - start_time);
 146         const double end = start + samples_per_pixel * (right - left);
 147
 148         snapshot->get_subsampled_edges(edges,
 149                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 150                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 151                 samples_per_pixel / Oversampling, _probe->index);
 152         assert(edges.size() >= 2);
 153
 154         // Paint the edges
 155         const unsigned int edge_count = edges.size() - 2;
 156         QLineF *const edge_lines = new QLineF[edge_count];
 157         line = edge_lines;
 158
 159         for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 160                         edges.begin() + 1;
 161                 i != edges.end() - 1; i++) {
 162                 const float x = ((*i).first / samples_per_pixel -
 163                         pixels_offset) + left;
 164                 *line++ = QLineF(x, high_offset, x, low_offset);
 165         }
 166
 167         p.setPen(EdgeColour);
 168         p.drawLines(edge_lines, edge_count);
 169         delete[] edge_lines;
 170
 171         // Paint the caps
 172         const unsigned int max_cap_line_count = edges.size();
 173         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 174
 175         p.setPen(HighColour);
 176         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 177                 pixels_offset, left, high_offset);
 178         p.setPen(LowColour);
 179         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 180                 pixels_offset, left, low_offset);
 181
 182         delete[] cap_lines;
 183 }
 184
 185 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 186         vector< pair<int64_t, bool> > &edges, bool level,
 187         double samples_per_pixel, double pixels_offset, float x_offset,
 188         float y_offset)
 189 {
 190         QLineF *line = lines;
 191
 192         for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 193                 edges.begin(); i != (edges.end() - 1); i++)
 194                 if ((*i).second == level) {
 195                         *line++ = QLineF(
 196                                 ((*i).first / samples_per_pixel -
 197                                         pixels_offset) + x_offset, y_offset,
 198                                 ((*(i+1)).first / samples_per_pixel -
 199                                         pixels_offset) + x_offset, y_offset);
 200                 }
 201
 202         p.drawLines(lines, line - lines);
 203 }
 204
 205 void LogicSignal::init_trigger_actions(QWidget *parent)
 206 {
 207         _trigger_none = new QAction(QIcon(":/icons/trigger-none.svg"),
 208                 tr("No trigger"), parent);
 209         _trigger_none->setCheckable(true);
 210         connect(_trigger_none, SIGNAL(triggered()),
 211                 this, SLOT(on_trigger_none()));
 212
 213         _trigger_rising = new QAction(QIcon(":/icons/trigger-rising.svg"),
 214                 tr("Trigger on rising edge"), parent);
 215         _trigger_rising->setCheckable(true);
 216         connect(_trigger_rising, SIGNAL(triggered()),
 217                 this, SLOT(on_trigger_rising()));
 218
 219         _trigger_high = new QAction(QIcon(":/icons/trigger-high.svg"),
 220                 tr("Trigger on high level"), parent);
 221         _trigger_high->setCheckable(true);
 222         connect(_trigger_high, SIGNAL(triggered()),
 223                 this, SLOT(on_trigger_high()));
 224
 225         _trigger_falling = new QAction(QIcon(":/icons/trigger-falling.svg"),
 226                 tr("Trigger on falling edge"), parent);
 227         _trigger_falling->setCheckable(true);
 228         connect(_trigger_falling, SIGNAL(triggered()),
 229                 this, SLOT(on_trigger_falling()));
 230
 231         _trigger_low = new QAction(QIcon(":/icons/trigger-low.svg"),
 232                 tr("Trigger on low level"), parent);
 233         _trigger_low->setCheckable(true);
 234         connect(_trigger_low, SIGNAL(triggered()),
 235                 this, SLOT(on_trigger_low()));
 236
 237         _trigger_change = new QAction(QIcon(":/icons/trigger-change.svg"),
 238                 tr("Trigger on rising or falling edge"), parent);
 239         _trigger_change->setCheckable(true);
 240         connect(_trigger_change, SIGNAL(triggered()),
 241                 this, SLOT(on_trigger_change()));
 242 }
 243
 244 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 245 {
 246         GVariant *gvar;
 247
 248         Signal::populate_popup_form(parent, form);
 249
 250         // Add the trigger actions
 251         assert(_dev_inst);
 252         if (!(gvar = _dev_inst->list_config(NULL, SR_CONF_TRIGGER_TYPE)))
 253         {
 254                 const char *const trig_types =
 255                         g_variant_get_string(gvar, NULL);
 256
 257                 if (trig_types && trig_types[0] != '\0')
 258                 {
 259                         _trigger_bar = new QToolBar(parent);
 260
 261                         init_trigger_actions(_trigger_bar);
 262                         _trigger_bar->addAction(_trigger_none);
 263                         add_trigger_action(trig_types, 'r', _trigger_rising);
 264                         add_trigger_action(trig_types, '1', _trigger_high);
 265                         add_trigger_action(trig_types, 'f', _trigger_falling);
 266                         add_trigger_action(trig_types, '0', _trigger_low);
 267                         add_trigger_action(trig_types, 'c', _trigger_change);
 268
 269                         update_trigger_actions();
 270
 271                         form->addRow(tr("Trigger"), _trigger_bar);
 272                 }
 273
 274                 g_variant_unref(gvar);
 275         }
 276 }
 277
 278 void LogicSignal::add_trigger_action(const char *trig_types, char type,
 279         QAction *action)
 280 {
 281         while(*trig_types)
 282                 if(*trig_types++ == type) {
 283                         _trigger_bar->addAction(action);
 284                         break;
 285                 }
 286 }
 287
 288 void LogicSignal::update_trigger_actions()
 289 {
 290         const char cur_trigger = _probe->trigger ?
 291                 _probe->trigger[0] : '\0';
 292         _trigger_none->setChecked(cur_trigger == '\0');
 293         _trigger_rising->setChecked(cur_trigger == 'r');
 294         _trigger_high->setChecked(cur_trigger == '1');
 295         _trigger_falling->setChecked(cur_trigger == 'f');
 296         _trigger_low->setChecked(cur_trigger == '0');
 297         _trigger_change->setChecked(cur_trigger == 'c');
 298 }
 299
 300 void LogicSignal::set_trigger(char type)
 301 {
 302         const char trigger_type_string[2] = {type, 0};
 303         const char *const trigger_string =
 304                 (type != 0) ? trigger_type_string : NULL;
 305
 306         assert(_dev_inst);
 307         const sr_dev_inst *const sdi = _dev_inst->dev_inst();
 308         assert(sdi);
 309
 310         const int probe_count = g_slist_length(sdi->probes);
 311         assert(probe_count > 0);
 312
 313         assert(_probe && _probe->index < probe_count);
 314
 315         for (int i = 0; i < probe_count; i++) {
 316                 sr_dev_trigger_set(sdi, i, (i == _probe->index) ?
 317                         trigger_string : NULL);
 318         }
 319
 320         update_trigger_actions();
 321 }
 322
 323 void LogicSignal::on_trigger_none()
 324 {
 325         set_trigger('\0');
 326 }
 327
 328 void LogicSignal::on_trigger_rising()
 329 {
 330         set_trigger('r');
 331 }
 332
 333 void LogicSignal::on_trigger_high()
 334 {
 335         set_trigger('1');
 336 }
 337
 338 void LogicSignal::on_trigger_falling()
 339 {
 340         set_trigger('f');
 341 }
 342
 343 void LogicSignal::on_trigger_low()
 344 {
 345         set_trigger('0');
 346 }
 347
 348 void LogicSignal::on_trigger_change()
 349 {
 350         set_trigger('c');
 351 }
 352
 353 } // namespace view
 354 } // namespace pv