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 <cassert>
  24 #include <cmath>
  25
  26 #include <QFormLayout>
  27 #include <QToolBar>
  28
  29 #include "logicsignal.h"
  30 #include "view.h"
  31
  32 #include <pv/sigsession.h>
  33 #include <pv/device/devinst.h>
  34 #include <pv/data/logic.h>
  35 #include <pv/data/logicsnapshot.h>
  36 #include <pv/view/view.h>
  37
  38 using std::deque;
  39 using std::max;
  40 using std::min;
  41 using std::pair;
  42 using std::shared_ptr;
  43 using std::vector;
  44
  45 namespace pv {
  46 namespace view {
  47
  48 const float LogicSignal::Oversampling = 2.0f;
  49
  50 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
  51 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
  52 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
  53
  54 const QColor LogicSignal::SignalColours[10] = {
  55         QColor(0x16, 0x19, 0x1A),       // Black
  56         QColor(0x8F, 0x52, 0x02),       // Brown
  57         QColor(0xCC, 0x00, 0x00),       // Red
  58         QColor(0xF5, 0x79, 0x00),       // Orange
  59         QColor(0xED, 0xD4, 0x00),       // Yellow
  60         QColor(0x73, 0xD2, 0x16),       // Green
  61         QColor(0x34, 0x65, 0xA4),       // Blue
  62         QColor(0x75, 0x50, 0x7B),       // Violet
  63         QColor(0x88, 0x8A, 0x85),       // Grey
  64         QColor(0xEE, 0xEE, 0xEC),       // White
  65 };
  66
  67 LogicSignal::LogicSignal(shared_ptr<pv::device::DevInst> dev_inst,
  68         const sr_channel *const probe, shared_ptr<data::Logic> data) :
  69         Signal(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         struct sr_trigger *trigger;
  79         struct sr_trigger_stage *stage;
  80         struct sr_trigger_match *match;
  81         const GSList *l, *m;
  82
  83         _colour = SignalColours[probe->index % countof(SignalColours)];
  84
  85         /* Populate this channel's trigger setting with whatever we
  86          * find in the current session trigger, if anything. */
  87         _trigger_match = 0;
  88         if ((trigger = sr_session_trigger_get(SigSession::_sr_session))) {
  89                 for (l = trigger->stages; l && !_trigger_match; l = l->next) {
  90                         stage = (struct sr_trigger_stage *)l->data;
  91                         for (m = stage->matches; m && !_trigger_match; m = m->next) {
  92                                 match = (struct sr_trigger_match *)m->data;
  93                                 if (match->channel == _probe)
  94                                         _trigger_match = match->match;
  95                         }
  96                 }
  97         }
  98 }
  99
 100 LogicSignal::~LogicSignal()
 101 {
 102 }
 103
 104 shared_ptr<pv::data::SignalData> LogicSignal::data() const
 105 {
 106         return _data;
 107 }
 108
 109 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
 110 {
 111         return _data;
 112 }
 113
 114 void LogicSignal::paint_back(QPainter &p, int left, int right)
 115 {
 116         if (_probe->enabled)
 117                 paint_axis(p, get_y(), left, right);
 118 }
 119
 120 void LogicSignal::paint_mid(QPainter &p, int left, int right)
 121 {
 122         using pv::view::View;
 123
 124         QLineF *line;
 125
 126         vector< pair<int64_t, bool> > edges;
 127
 128         assert(_probe);
 129         assert(_data);
 130         assert(right >= left);
 131
 132         assert(_view);
 133         const int y = _v_offset - _view->v_offset();
 134
 135         const double scale = _view->scale();
 136         assert(scale > 0);
 137
 138         const double offset = _view->offset();
 139
 140         if (!_probe->enabled)
 141                 return;
 142
 143         const float high_offset = y - View::SignalHeight + 0.5f;
 144         const float low_offset = y + 0.5f;
 145
 146         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 147                 _data->get_snapshots();
 148         if (snapshots.empty())
 149                 return;
 150
 151         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 152                 snapshots.front();
 153
 154         double samplerate = _data->samplerate();
 155
 156         // Show sample rate as 1Hz when it is unknown
 157         if (samplerate == 0.0)
 158                 samplerate = 1.0;
 159
 160         const double pixels_offset = offset / scale;
 161         const double start_time = _data->get_start_time();
 162         const int64_t last_sample = snapshot->get_sample_count() - 1;
 163         const double samples_per_pixel = samplerate * scale;
 164         const double start = samplerate * (offset - start_time);
 165         const double end = start + samples_per_pixel * (right - left);
 166
 167         snapshot->get_subsampled_edges(edges,
 168                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 169                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 170                 samples_per_pixel / Oversampling, _probe->index);
 171         assert(edges.size() >= 2);
 172
 173         // Paint the edges
 174         const unsigned int edge_count = edges.size() - 2;
 175         QLineF *const edge_lines = new QLineF[edge_count];
 176         line = edge_lines;
 177
 178         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 179                 const float x = ((*i).first / samples_per_pixel -
 180                         pixels_offset) + left;
 181                 *line++ = QLineF(x, high_offset, x, low_offset);
 182         }
 183
 184         p.setPen(EdgeColour);
 185         p.drawLines(edge_lines, edge_count);
 186         delete[] edge_lines;
 187
 188         // Paint the caps
 189         const unsigned int max_cap_line_count = edges.size();
 190         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 191
 192         p.setPen(HighColour);
 193         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 194                 pixels_offset, left, high_offset);
 195         p.setPen(LowColour);
 196         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 197                 pixels_offset, left, low_offset);
 198
 199         delete[] cap_lines;
 200 }
 201
 202 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 203         vector< pair<int64_t, bool> > &edges, bool level,
 204         double samples_per_pixel, double pixels_offset, float x_offset,
 205         float y_offset)
 206 {
 207         QLineF *line = lines;
 208
 209         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 210                 if ((*i).second == level) {
 211                         *line++ = QLineF(
 212                                 ((*i).first / samples_per_pixel -
 213                                         pixels_offset) + x_offset, y_offset,
 214                                 ((*(i+1)).first / samples_per_pixel -
 215                                         pixels_offset) + x_offset, y_offset);
 216                 }
 217
 218         p.drawLines(lines, line - lines);
 219 }
 220
 221 void LogicSignal::init_trigger_actions(QWidget *parent)
 222 {
 223         _trigger_none = new QAction(QIcon(":/icons/trigger-none.svg"),
 224                 tr("No trigger"), parent);
 225         _trigger_none->setCheckable(true);
 226         connect(_trigger_none, SIGNAL(triggered()), this, SLOT(on_trigger()));
 227
 228         _trigger_rising = new QAction(QIcon(":/icons/trigger-rising.svg"),
 229                 tr("Trigger on rising edge"), parent);
 230         _trigger_rising->setCheckable(true);
 231         connect(_trigger_rising, SIGNAL(triggered()), this, SLOT(on_trigger()));
 232
 233         _trigger_high = new QAction(QIcon(":/icons/trigger-high.svg"),
 234                 tr("Trigger on high level"), parent);
 235         _trigger_high->setCheckable(true);
 236         connect(_trigger_high, SIGNAL(triggered()), this, SLOT(on_trigger()));
 237
 238         _trigger_falling = new QAction(QIcon(":/icons/trigger-falling.svg"),
 239                 tr("Trigger on falling edge"), parent);
 240         _trigger_falling->setCheckable(true);
 241         connect(_trigger_falling, SIGNAL(triggered()), this, SLOT(on_trigger()));
 242
 243         _trigger_low = new QAction(QIcon(":/icons/trigger-low.svg"),
 244                 tr("Trigger on low level"), parent);
 245         _trigger_low->setCheckable(true);
 246         connect(_trigger_low, SIGNAL(triggered()), this, SLOT(on_trigger()));
 247
 248         _trigger_change = new QAction(QIcon(":/icons/trigger-change.svg"),
 249                 tr("Trigger on rising or falling edge"), parent);
 250         _trigger_change->setCheckable(true);
 251         connect(_trigger_change, SIGNAL(triggered()), this, SLOT(on_trigger()));
 252 }
 253
 254 QAction* LogicSignal::match_action(int match)
 255 {
 256         QAction *action;
 257
 258         action = _trigger_none;
 259         switch (match) {
 260         case SR_TRIGGER_ZERO:
 261                 action = _trigger_low;
 262                 break;
 263         case SR_TRIGGER_ONE:
 264                 action = _trigger_high;
 265                 break;
 266         case SR_TRIGGER_RISING:
 267                 action = _trigger_rising;
 268                 break;
 269         case SR_TRIGGER_FALLING:
 270                 action = _trigger_falling;
 271                 break;
 272         case SR_TRIGGER_EDGE:
 273                 action = _trigger_change;
 274                 break;
 275         }
 276
 277         return action;
 278 }
 279
 280 int LogicSignal::action_match(QAction *action)
 281 {
 282         int match;
 283
 284         if (action == _trigger_low)
 285                 match = SR_TRIGGER_ZERO;
 286         else if (action == _trigger_high)
 287                 match = SR_TRIGGER_ONE;
 288         else if (action == _trigger_rising)
 289                 match = SR_TRIGGER_RISING;
 290         else if (action == _trigger_falling)
 291                 match = SR_TRIGGER_FALLING;
 292         else if (action == _trigger_change)
 293                 match = SR_TRIGGER_EDGE;
 294         else
 295                 match = 0;
 296
 297         return match;
 298 }
 299
 300 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 301 {
 302         GVariant *gvar;
 303         gsize num_opts;
 304         const int32_t *trig_matches;
 305         unsigned int i;
 306         bool is_checked;
 307
 308         Signal::populate_popup_form(parent, form);
 309
 310         if (!(gvar = _dev_inst->list_config(NULL, SR_CONF_TRIGGER_MATCH)))
 311                 return;
 312
 313         _trigger_bar = new QToolBar(parent);
 314         init_trigger_actions(_trigger_bar);
 315         _trigger_bar->addAction(_trigger_none);
 316         trig_matches = (const int32_t *)g_variant_get_fixed_array(gvar,
 317                         &num_opts, sizeof(int32_t));
 318         for (i = 0; i < num_opts; i++) {
 319                 _trigger_bar->addAction(match_action(trig_matches[i]));
 320                 is_checked = _trigger_match == trig_matches[i];
 321                 match_action(trig_matches[i])->setChecked(is_checked);
 322         }
 323         form->addRow(tr("Trigger"), _trigger_bar);
 324         g_variant_unref(gvar);
 325
 326 }
 327
 328 void LogicSignal::on_trigger()
 329 {
 330         QAction *action;
 331
 332         match_action(_trigger_match)->setChecked(FALSE);
 333
 334         action = (QAction *)sender();
 335         action->setChecked(TRUE);
 336         _trigger_match = action_match(action);
 337
 338 }
 339
 340 } // namespace view
 341 } // namespace pv