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