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/data/logic.h>
  34 #include <pv/data/logicsnapshot.h>
  35 #include <pv/view/view.h>
  36
  37 #include <libsigrok/libsigrok.hpp>
  38
  39 using std::deque;
  40 using std::max;
  41 using std::min;
  42 using std::pair;
  43 using std::shared_ptr;
  44 using std::vector;
  45
  46 using sigrok::Channel;
  47 using sigrok::ConfigKey;
  48 using sigrok::Device;
  49 using sigrok::Error;
  50 using sigrok::Trigger;
  51 using sigrok::TriggerMatchType;
  52
  53 namespace pv {
  54 namespace view {
  55
  56 const float LogicSignal::Oversampling = 2.0f;
  57
  58 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
  59 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
  60 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
  61
  62 const QColor LogicSignal::SignalColours[10] = {
  63         QColor(0x16, 0x19, 0x1A),       // Black
  64         QColor(0x8F, 0x52, 0x02),       // Brown
  65         QColor(0xCC, 0x00, 0x00),       // Red
  66         QColor(0xF5, 0x79, 0x00),       // Orange
  67         QColor(0xED, 0xD4, 0x00),       // Yellow
  68         QColor(0x73, 0xD2, 0x16),       // Green
  69         QColor(0x34, 0x65, 0xA4),       // Blue
  70         QColor(0x75, 0x50, 0x7B),       // Violet
  71         QColor(0x88, 0x8A, 0x85),       // Grey
  72         QColor(0xEE, 0xEE, 0xEC),       // White
  73 };
  74
  75 LogicSignal::LogicSignal(shared_ptr<Device> device,
  76                 shared_ptr<Channel> channel,
  77                 shared_ptr<data::Logic> data) :
  78         Signal(channel),
  79         _device(device),
  80         _data(data),
  81         _trigger_none(NULL),
  82         _trigger_rising(NULL),
  83         _trigger_high(NULL),
  84         _trigger_falling(NULL),
  85         _trigger_low(NULL),
  86         _trigger_change(NULL)
  87 {
  88         shared_ptr<Trigger> trigger;
  89
  90         _colour = SignalColours[channel->index() % countof(SignalColours)];
  91
  92         /* Populate this channel's trigger setting with whatever we
  93          * find in the current session trigger, if anything. */
  94         _trigger_match = nullptr;
  95         if ((trigger = SigSession::_sr_session->trigger()))
  96                 for (auto stage : trigger->stages())
  97                         for (auto match : stage->matches())
  98                                 if (match->channel() == _channel)
  99                                         _trigger_match = match->type();
 100 }
 101
 102 LogicSignal::~LogicSignal()
 103 {
 104 }
 105
 106 shared_ptr<pv::data::SignalData> LogicSignal::data() const
 107 {
 108         return _data;
 109 }
 110
 111 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
 112 {
 113         return _data;
 114 }
 115
 116 void LogicSignal::paint_back(QPainter &p, int left, int right)
 117 {
 118         if (_channel->enabled())
 119                 paint_axis(p, get_y(), left, right);
 120 }
 121
 122 void LogicSignal::paint_mid(QPainter &p, int left, int right)
 123 {
 124         using pv::view::View;
 125
 126         QLineF *line;
 127
 128         vector< pair<int64_t, bool> > edges;
 129
 130         assert(_channel);
 131         assert(_data);
 132         assert(right >= left);
 133
 134         assert(_view);
 135         const int y = _v_offset - _view->v_offset();
 136
 137         const double scale = _view->scale();
 138         assert(scale > 0);
 139
 140         const double offset = _view->offset();
 141
 142         if (!_channel->enabled())
 143                 return;
 144
 145         const float high_offset = y - View::SignalHeight + 0.5f;
 146         const float low_offset = y + 0.5f;
 147
 148         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 149                 _data->get_snapshots();
 150         if (snapshots.empty())
 151                 return;
 152
 153         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 154                 snapshots.front();
 155
 156         double samplerate = _data->samplerate();
 157
 158         // Show sample rate as 1Hz when it is unknown
 159         if (samplerate == 0.0)
 160                 samplerate = 1.0;
 161
 162         const double pixels_offset = offset / scale;
 163         const double start_time = _data->get_start_time();
 164         const int64_t last_sample = snapshot->get_sample_count() - 1;
 165         const double samples_per_pixel = samplerate * scale;
 166         const double start = samplerate * (offset - start_time);
 167         const double end = start + samples_per_pixel * (right - left);
 168
 169         snapshot->get_subsampled_edges(edges,
 170                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 171                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 172                 samples_per_pixel / Oversampling, _channel->index());
 173         assert(edges.size() >= 2);
 174
 175         // Paint the edges
 176         const unsigned int edge_count = edges.size() - 2;
 177         QLineF *const edge_lines = new QLineF[edge_count];
 178         line = edge_lines;
 179
 180         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 181                 const float x = ((*i).first / samples_per_pixel -
 182                         pixels_offset) + left;
 183                 *line++ = QLineF(x, high_offset, x, low_offset);
 184         }
 185
 186         p.setPen(EdgeColour);
 187         p.drawLines(edge_lines, edge_count);
 188         delete[] edge_lines;
 189
 190         // Paint the caps
 191         const unsigned int max_cap_line_count = edges.size();
 192         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 193
 194         p.setPen(HighColour);
 195         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 196                 pixels_offset, left, high_offset);
 197         p.setPen(LowColour);
 198         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 199                 pixels_offset, left, low_offset);
 200
 201         delete[] cap_lines;
 202 }
 203
 204 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 205         vector< pair<int64_t, bool> > &edges, bool level,
 206         double samples_per_pixel, double pixels_offset, float x_offset,
 207         float y_offset)
 208 {
 209         QLineF *line = lines;
 210
 211         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 212                 if ((*i).second == level) {
 213                         *line++ = QLineF(
 214                                 ((*i).first / samples_per_pixel -
 215                                         pixels_offset) + x_offset, y_offset,
 216                                 ((*(i+1)).first / samples_per_pixel -
 217                                         pixels_offset) + x_offset, y_offset);
 218                 }
 219
 220         p.drawLines(lines, line - lines);
 221 }
 222
 223 void LogicSignal::init_trigger_actions(QWidget *parent)
 224 {
 225         _trigger_none = new QAction(QIcon(":/icons/trigger-none.svg"),
 226                 tr("No trigger"), parent);
 227         _trigger_none->setCheckable(true);
 228         connect(_trigger_none, SIGNAL(triggered()), this, SLOT(on_trigger()));
 229
 230         _trigger_rising = new QAction(QIcon(":/icons/trigger-rising.svg"),
 231                 tr("Trigger on rising edge"), parent);
 232         _trigger_rising->setCheckable(true);
 233         connect(_trigger_rising, SIGNAL(triggered()), this, SLOT(on_trigger()));
 234
 235         _trigger_high = new QAction(QIcon(":/icons/trigger-high.svg"),
 236                 tr("Trigger on high level"), parent);
 237         _trigger_high->setCheckable(true);
 238         connect(_trigger_high, SIGNAL(triggered()), this, SLOT(on_trigger()));
 239
 240         _trigger_falling = new QAction(QIcon(":/icons/trigger-falling.svg"),
 241                 tr("Trigger on falling edge"), parent);
 242         _trigger_falling->setCheckable(true);
 243         connect(_trigger_falling, SIGNAL(triggered()), this, SLOT(on_trigger()));
 244
 245         _trigger_low = new QAction(QIcon(":/icons/trigger-low.svg"),
 246                 tr("Trigger on low level"), parent);
 247         _trigger_low->setCheckable(true);
 248         connect(_trigger_low, SIGNAL(triggered()), this, SLOT(on_trigger()));
 249
 250         _trigger_change = new QAction(QIcon(":/icons/trigger-change.svg"),
 251                 tr("Trigger on rising or falling edge"), parent);
 252         _trigger_change->setCheckable(true);
 253         connect(_trigger_change, SIGNAL(triggered()), this, SLOT(on_trigger()));
 254 }
 255
 256 QAction* LogicSignal::match_action(const TriggerMatchType *type)
 257 {
 258         QAction *action;
 259
 260         action = _trigger_none;
 261         switch (type->id()) {
 262         case SR_TRIGGER_ZERO:
 263                 action = _trigger_low;
 264                 break;
 265         case SR_TRIGGER_ONE:
 266                 action = _trigger_high;
 267                 break;
 268         case SR_TRIGGER_RISING:
 269                 action = _trigger_rising;
 270                 break;
 271         case SR_TRIGGER_FALLING:
 272                 action = _trigger_falling;
 273                 break;
 274         case SR_TRIGGER_EDGE:
 275                 action = _trigger_change;
 276                 break;
 277         default:
 278                 assert(0);
 279         }
 280
 281         return action;
 282 }
 283
 284 const TriggerMatchType *LogicSignal::action_match(QAction *action)
 285 {
 286         if (action == _trigger_low)
 287                 return TriggerMatchType::ZERO;
 288         else if (action == _trigger_high)
 289                 return TriggerMatchType::ONE;
 290         else if (action == _trigger_rising)
 291                 return TriggerMatchType::RISING;
 292         else if (action == _trigger_falling)
 293                 return TriggerMatchType::FALLING;
 294         else if (action == _trigger_change)
 295                 return TriggerMatchType::EDGE;
 296         else
 297                 return nullptr;
 298 }
 299
 300 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 301 {
 302         Glib::VariantContainerBase gvar;
 303         vector<int32_t> trig_types;
 304
 305         Signal::populate_popup_form(parent, form);
 306
 307         try {
 308                 gvar = _device->config_list(ConfigKey::TRIGGER_MATCH);
 309         } catch (Error e) {
 310                 return;
 311         }
 312
 313         _trigger_bar = new QToolBar(parent);
 314         init_trigger_actions(_trigger_bar);
 315         _trigger_bar->addAction(_trigger_none);
 316         trig_types =
 317                 Glib::VariantBase::cast_dynamic<Glib::Variant<vector<int32_t>>>(
 318                         gvar).get();
 319         for (auto type_id : trig_types) {
 320                 auto type = TriggerMatchType::get(type_id);
 321                 _trigger_bar->addAction(match_action(type));
 322                 match_action(type)->setChecked(_trigger_match == type);
 323         }
 324         form->addRow(tr("Trigger"), _trigger_bar);
 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