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