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