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, sr_probe *const probe,
  67         shared_ptr<data::Logic> data) :
  68         Signal(session, 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 (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 159                         edges.begin() + 1;
 160                 i != edges.end() - 1; i++) {
 161                 const float x = ((*i).first / samples_per_pixel -
 162                         pixels_offset) + left;
 163                 *line++ = QLineF(x, high_offset, x, low_offset);
 164         }
 165
 166         p.setPen(EdgeColour);
 167         p.drawLines(edge_lines, edge_count);
 168         delete[] edge_lines;
 169
 170         // Paint the caps
 171         const unsigned int max_cap_line_count = edges.size();
 172         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 173
 174         p.setPen(HighColour);
 175         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 176                 pixels_offset, left, high_offset);
 177         p.setPen(LowColour);
 178         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 179                 pixels_offset, left, low_offset);
 180
 181         delete[] cap_lines;
 182 }
 183
 184 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 185         vector< pair<int64_t, bool> > &edges, bool level,
 186         double samples_per_pixel, double pixels_offset, float x_offset,
 187         float y_offset)
 188 {
 189         QLineF *line = lines;
 190
 191         for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 192                 edges.begin(); i != (edges.end() - 1); i++)
 193                 if ((*i).second == level) {
 194                         *line++ = QLineF(
 195                                 ((*i).first / samples_per_pixel -
 196                                         pixels_offset) + x_offset, y_offset,
 197                                 ((*(i+1)).first / samples_per_pixel -
 198                                         pixels_offset) + x_offset, y_offset);
 199                 }
 200
 201         p.drawLines(lines, line - lines);
 202 }
 203
 204 void LogicSignal::init_trigger_actions(QWidget *parent)
 205 {
 206         _trigger_none = new QAction(QIcon(":/icons/trigger-none.svg"),
 207                 tr("No trigger"), parent);
 208         _trigger_none->setCheckable(true);
 209         connect(_trigger_none, SIGNAL(triggered()),
 210                 this, SLOT(on_trigger_none()));
 211
 212         _trigger_rising = new QAction(QIcon(":/icons/trigger-rising.svg"),
 213                 tr("Trigger on rising edge"), parent);
 214         _trigger_rising->setCheckable(true);
 215         connect(_trigger_rising, SIGNAL(triggered()),
 216                 this, SLOT(on_trigger_rising()));
 217
 218         _trigger_high = new QAction(QIcon(":/icons/trigger-high.svg"),
 219                 tr("Trigger on high level"), parent);
 220         _trigger_high->setCheckable(true);
 221         connect(_trigger_high, SIGNAL(triggered()),
 222                 this, SLOT(on_trigger_high()));
 223
 224         _trigger_falling = new QAction(QIcon(":/icons/trigger-falling.svg"),
 225                 tr("Trigger on falling edge"), parent);
 226         _trigger_falling->setCheckable(true);
 227         connect(_trigger_falling, SIGNAL(triggered()),
 228                 this, SLOT(on_trigger_falling()));
 229
 230         _trigger_low = new QAction(QIcon(":/icons/trigger-low.svg"),
 231                 tr("Trigger on low level"), parent);
 232         _trigger_low->setCheckable(true);
 233         connect(_trigger_low, SIGNAL(triggered()),
 234                 this, SLOT(on_trigger_low()));
 235
 236         _trigger_change = new QAction(QIcon(":/icons/trigger-change.svg"),
 237                 tr("Trigger on rising or falling edge"), parent);
 238         _trigger_change->setCheckable(true);
 239         connect(_trigger_change, SIGNAL(triggered()),
 240                 this, SLOT(on_trigger_change()));
 241 }
 242
 243 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 244 {
 245         GVariant *gvar;
 246
 247         Signal::populate_popup_form(parent, form);
 248
 249         // Add the trigger actions
 250         boost::shared_ptr<DevInst> dev_inst = _session.get_device();
 251         assert(dev_inst);
 252
 253         if (!(gvar = dev_inst->list_config(NULL, SR_CONF_TRIGGER_TYPE)))
 254         {
 255                 const char *const trig_types =
 256                         g_variant_get_string(gvar, NULL);
 257
 258                 if (trig_types && trig_types[0] != '\0')
 259                 {
 260                         _trigger_bar = new QToolBar(parent);
 261
 262                         init_trigger_actions(_trigger_bar);
 263                         _trigger_bar->addAction(_trigger_none);
 264                         add_trigger_action(trig_types, 'r', _trigger_rising);
 265                         add_trigger_action(trig_types, '1', _trigger_high);
 266                         add_trigger_action(trig_types, 'f', _trigger_falling);
 267                         add_trigger_action(trig_types, '0', _trigger_low);
 268                         add_trigger_action(trig_types, 'c', _trigger_change);
 269
 270                         update_trigger_actions();
 271
 272                         form->addRow(tr("Trigger"), _trigger_bar);
 273                 }
 274
 275                 g_variant_unref(gvar);
 276         }
 277 }
 278
 279 void LogicSignal::add_trigger_action(const char *trig_types, char type,
 280         QAction *action)
 281 {
 282         while(*trig_types)
 283                 if(*trig_types++ == type) {
 284                         _trigger_bar->addAction(action);
 285                         break;
 286                 }
 287 }
 288
 289 void LogicSignal::update_trigger_actions()
 290 {
 291         const char cur_trigger = _probe->trigger ?
 292                 _probe->trigger[0] : '\0';
 293         _trigger_none->setChecked(cur_trigger == '\0');
 294         _trigger_rising->setChecked(cur_trigger == 'r');
 295         _trigger_high->setChecked(cur_trigger == '1');
 296         _trigger_falling->setChecked(cur_trigger == 'f');
 297         _trigger_low->setChecked(cur_trigger == '0');
 298         _trigger_change->setChecked(cur_trigger == 'c');
 299 }
 300
 301 void LogicSignal::set_trigger(char type)
 302 {
 303         const char trigger_type_string[2] = {type, 0};
 304         const char *const trigger_string =
 305                 (type != 0) ? trigger_type_string : NULL;
 306
 307         boost::shared_ptr<DevInst> dev_inst = _session.get_device();
 308         assert(dev_inst);
 309
 310         const sr_dev_inst *const sdi = dev_inst->dev_inst();
 311         assert(sdi);
 312
 313         const int probe_count = g_slist_length(sdi->probes);
 314         assert(probe_count > 0);
 315
 316         assert(_probe && _probe->index < probe_count);
 317
 318         for (int i = 0; i < probe_count; i++) {
 319                 sr_dev_trigger_set(sdi, i, (i == _probe->index) ?
 320                         trigger_string : NULL);
 321         }
 322
 323         update_trigger_actions();
 324 }
 325
 326 void LogicSignal::on_trigger_none()
 327 {
 328         set_trigger('\0');
 329 }
 330
 331 void LogicSignal::on_trigger_rising()
 332 {
 333         set_trigger('r');
 334 }
 335
 336 void LogicSignal::on_trigger_high()
 337 {
 338         set_trigger('1');
 339 }
 340
 341 void LogicSignal::on_trigger_falling()
 342 {
 343         set_trigger('f');
 344 }
 345
 346 void LogicSignal::on_trigger_low()
 347 {
 348         set_trigger('0');
 349 }
 350
 351 void LogicSignal::on_trigger_change()
 352 {
 353         set_trigger('c');
 354 }
 355
 356 } // namespace view
 357 } // namespace pv