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 <algorithm>
  27
  28 #include <QFormLayout>
  29 #include <QToolBar>
  30
  31 #include "logicsignal.hpp"
  32 #include "view.hpp"
  33
  34 #include <pv/sigsession.hpp>
  35 #include <pv/devicemanager.hpp>
  36 #include <pv/data/logic.hpp>
  37 #include <pv/data/logicsnapshot.hpp>
  38 #include <pv/view/view.hpp>
  39
  40 #include <libsigrok/libsigrok.hpp>
  41
  42 using std::deque;
  43 using std::max;
  44 using std::make_pair;
  45 using std::min;
  46 using std::pair;
  47 using std::shared_ptr;
  48 using std::vector;
  49
  50 using sigrok::Channel;
  51 using sigrok::ConfigKey;
  52 using sigrok::Device;
  53 using sigrok::Error;
  54 using sigrok::Trigger;
  55 using sigrok::TriggerStage;
  56 using sigrok::TriggerMatch;
  57 using sigrok::TriggerMatchType;
  58
  59 namespace pv {
  60 namespace view {
  61
  62 const int LogicSignal::SignalHeight = 30;
  63 const int LogicSignal::SignalMargin = 10;
  64
  65 const float LogicSignal::Oversampling = 2.0f;
  66
  67 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
  68 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
  69 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
  70
  71 const QColor LogicSignal::SignalColours[10] = {
  72         QColor(0x16, 0x19, 0x1A),       // Black
  73         QColor(0x8F, 0x52, 0x02),       // Brown
  74         QColor(0xCC, 0x00, 0x00),       // Red
  75         QColor(0xF5, 0x79, 0x00),       // Orange
  76         QColor(0xED, 0xD4, 0x00),       // Yellow
  77         QColor(0x73, 0xD2, 0x16),       // Green
  78         QColor(0x34, 0x65, 0xA4),       // Blue
  79         QColor(0x75, 0x50, 0x7B),       // Violet
  80         QColor(0x88, 0x8A, 0x85),       // Grey
  81         QColor(0xEE, 0xEE, 0xEC),       // White
  82 };
  83
  84 LogicSignal::LogicSignal(
  85         pv::Session &session,
  86         shared_ptr<Device> device,
  87         shared_ptr<Channel> channel,
  88         shared_ptr<data::Logic> data) :
  89         Signal(session, channel),
  90         device_(device),
  91         data_(data),
  92         trigger_none_(NULL),
  93         trigger_rising_(NULL),
  94         trigger_high_(NULL),
  95         trigger_falling_(NULL),
  96         trigger_low_(NULL),
  97         trigger_change_(NULL)
  98 {
  99         shared_ptr<Trigger> trigger;
 100
 101         colour_ = SignalColours[channel->index() % countof(SignalColours)];
 102
 103         /* Populate this channel's trigger setting with whatever we
 104          * find in the current session trigger, if anything. */
 105         trigger_match_ = nullptr;
 106         if ((trigger = session_.session()->trigger()))
 107                 for (auto stage : trigger->stages())
 108                         for (auto match : stage->matches())
 109                                 if (match->channel() == channel_)
 110                                         trigger_match_ = match->type();
 111 }
 112
 113 LogicSignal::~LogicSignal()
 114 {
 115 }
 116
 117 shared_ptr<pv::data::SignalData> LogicSignal::data() const
 118 {
 119         return data_;
 120 }
 121
 122 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
 123 {
 124         return data_;
 125 }
 126
 127 std::pair<int, int> LogicSignal::v_extents() const
 128 {
 129         return make_pair(-SignalHeight - SignalMargin, SignalMargin);
 130 }
 131
 132 void LogicSignal::paint_back(QPainter &p, int left, int right)
 133 {
 134         if (channel_->enabled())
 135                 paint_axis(p, get_visual_y(), left, right);
 136 }
 137
 138 void LogicSignal::paint_mid(QPainter &p, int left, int right)
 139 {
 140         using pv::view::View;
 141
 142         QLineF *line;
 143
 144         vector< pair<int64_t, bool> > edges;
 145
 146         assert(channel_);
 147         assert(data_);
 148         assert(right >= left);
 149         assert(owner_);
 150
 151         const int y = get_visual_y();
 152
 153         const View *const view = owner_->view();
 154         assert(view);
 155
 156         const double scale = view->scale();
 157         assert(scale > 0);
 158
 159         const double offset = view->offset();
 160
 161         if (!channel_->enabled())
 162                 return;
 163
 164         const float high_offset = y - SignalHeight + 0.5f;
 165         const float low_offset = y + 0.5f;
 166
 167         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 168                 data_->get_snapshots();
 169         if (snapshots.empty())
 170                 return;
 171
 172         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 173                 snapshots.front();
 174
 175         double samplerate = data_->samplerate();
 176
 177         // Show sample rate as 1Hz when it is unknown
 178         if (samplerate == 0.0)
 179                 samplerate = 1.0;
 180
 181         const double pixels_offset = offset / scale;
 182         const double start_time = data_->get_start_time();
 183         const int64_t last_sample = snapshot->get_sample_count() - 1;
 184         const double samples_per_pixel = samplerate * scale;
 185         const double start = samplerate * (offset - start_time);
 186         const double end = start + samples_per_pixel * (right - left);
 187
 188         snapshot->get_subsampled_edges(edges,
 189                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 190                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 191                 samples_per_pixel / Oversampling, channel_->index());
 192         assert(edges.size() >= 2);
 193
 194         // Paint the edges
 195         const unsigned int edge_count = edges.size() - 2;
 196         QLineF *const edge_lines = new QLineF[edge_count];
 197         line = edge_lines;
 198
 199         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 200                 const float x = ((*i).first / samples_per_pixel -
 201                         pixels_offset) + left;
 202                 *line++ = QLineF(x, high_offset, x, low_offset);
 203         }
 204
 205         p.setPen(EdgeColour);
 206         p.drawLines(edge_lines, edge_count);
 207         delete[] edge_lines;
 208
 209         // Paint the caps
 210         const unsigned int max_cap_line_count = edges.size();
 211         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 212
 213         p.setPen(HighColour);
 214         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 215                 pixels_offset, left, high_offset);
 216         p.setPen(LowColour);
 217         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 218                 pixels_offset, left, low_offset);
 219
 220         delete[] cap_lines;
 221 }
 222
 223 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 224         vector< pair<int64_t, bool> > &edges, bool level,
 225         double samples_per_pixel, double pixels_offset, float x_offset,
 226         float y_offset)
 227 {
 228         QLineF *line = lines;
 229
 230         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 231                 if ((*i).second == level) {
 232                         *line++ = QLineF(
 233                                 ((*i).first / samples_per_pixel -
 234                                         pixels_offset) + x_offset, y_offset,
 235                                 ((*(i+1)).first / samples_per_pixel -
 236                                         pixels_offset) + x_offset, y_offset);
 237                 }
 238
 239         p.drawLines(lines, line - lines);
 240 }
 241
 242 void LogicSignal::init_trigger_actions(QWidget *parent)
 243 {
 244         trigger_none_ = new QAction(*get_icon(":/icons/trigger-none.svg"),
 245                 tr("No trigger"), parent);
 246         trigger_none_->setCheckable(true);
 247         connect(trigger_none_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 248
 249         trigger_rising_ = new QAction(*get_icon(":/icons/trigger-rising.svg"),
 250                 tr("Trigger on rising edge"), parent);
 251         trigger_rising_->setCheckable(true);
 252         connect(trigger_rising_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 253
 254         trigger_high_ = new QAction(*get_icon(":/icons/trigger-high.svg"),
 255                 tr("Trigger on high level"), parent);
 256         trigger_high_->setCheckable(true);
 257         connect(trigger_high_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 258
 259         trigger_falling_ = new QAction(*get_icon(":/icons/trigger-falling.svg"),
 260                 tr("Trigger on falling edge"), parent);
 261         trigger_falling_->setCheckable(true);
 262         connect(trigger_falling_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 263
 264         trigger_low_ = new QAction(*get_icon(":/icons/trigger-low.svg"),
 265                 tr("Trigger on low level"), parent);
 266         trigger_low_->setCheckable(true);
 267         connect(trigger_low_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 268
 269         trigger_change_ = new QAction(*get_icon(":/icons/trigger-change.svg"),
 270                 tr("Trigger on rising or falling edge"), parent);
 271         trigger_change_->setCheckable(true);
 272         connect(trigger_change_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 273 }
 274
 275 const vector<int32_t> LogicSignal::get_trigger_types() const
 276 {
 277         try {
 278                 const Glib::VariantContainerBase gvar =
 279                         device_->config_list(ConfigKey::TRIGGER_MATCH);
 280                 return Glib::VariantBase::cast_dynamic<
 281                         Glib::Variant<vector<int32_t>>>(gvar).get();
 282         } catch (Error e) {
 283                 return vector<int32_t>();
 284         }
 285 }
 286
 287 QAction* LogicSignal::action_from_trigger_type(const TriggerMatchType *type)
 288 {
 289         QAction *action;
 290
 291         action = trigger_none_;
 292         if (type) {
 293                 switch (type->id()) {
 294                 case SR_TRIGGER_ZERO:
 295                         action = trigger_low_;
 296                         break;
 297                 case SR_TRIGGER_ONE:
 298                         action = trigger_high_;
 299                         break;
 300                 case SR_TRIGGER_RISING:
 301                         action = trigger_rising_;
 302                         break;
 303                 case SR_TRIGGER_FALLING:
 304                         action = trigger_falling_;
 305                         break;
 306                 case SR_TRIGGER_EDGE:
 307                         action = trigger_change_;
 308                         break;
 309                 default:
 310                         assert(0);
 311                 }
 312         }
 313
 314         return action;
 315 }
 316
 317 const TriggerMatchType *LogicSignal::trigger_type_from_action(QAction *action)
 318 {
 319         if (action == trigger_low_)
 320                 return TriggerMatchType::ZERO;
 321         else if (action == trigger_high_)
 322                 return TriggerMatchType::ONE;
 323         else if (action == trigger_rising_)
 324                 return TriggerMatchType::RISING;
 325         else if (action == trigger_falling_)
 326                 return TriggerMatchType::FALLING;
 327         else if (action == trigger_change_)
 328                 return TriggerMatchType::EDGE;
 329         else
 330                 return nullptr;
 331 }
 332
 333 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 334 {
 335         Signal::populate_popup_form(parent, form);
 336
 337         trigger_bar_ = new QToolBar(parent);
 338         init_trigger_actions(trigger_bar_);
 339         trigger_bar_->addAction(trigger_none_);
 340         trigger_none_->setChecked(!trigger_match_);
 341
 342         const vector<int32_t> trig_types = get_trigger_types();
 343         for (auto type_id : trig_types) {
 344                 const TriggerMatchType *const type =
 345                         TriggerMatchType::get(type_id);
 346                 QAction *const action = action_from_trigger_type(type);
 347                 trigger_bar_->addAction(action);
 348                 action->setChecked(trigger_match_ == type);
 349         }
 350         form->addRow(tr("Trigger"), trigger_bar_);
 351
 352 }
 353
 354 void LogicSignal::modify_trigger()
 355 {
 356         auto trigger = session_.session()->trigger();
 357         auto new_trigger = session_.device_manager().context()->create_trigger("pulseview");
 358
 359         if (trigger) {
 360                 for (auto stage : trigger->stages()) {
 361                         const auto &matches = stage->matches();
 362                         if (std::none_of(begin(matches), end(matches),
 363                             [&](shared_ptr<TriggerMatch> match) {
 364                                         return match->channel() != channel_; }))
 365                                 continue;
 366
 367                         auto new_stage = new_trigger->add_stage();
 368                         for (auto match : stage->matches()) {
 369                                 if (match->channel() == channel_)
 370                                         continue;
 371                                 new_stage->add_match(match->channel(), match->type());
 372                         }
 373                 }
 374         }
 375
 376         if (trigger_match_)
 377                 new_trigger->add_stage()->add_match(channel_, trigger_match_);
 378
 379         session_.session()->set_trigger(
 380                 new_trigger->stages().empty() ? nullptr : new_trigger);
 381 }
 382
 383 const QIcon* LogicSignal::get_icon(const char *path)
 384 {
 385         const QIcon *icon = icon_cache_.take(path);
 386         if (!icon) {
 387                 icon = new QIcon(path);
 388                 icon_cache_.insert(path, icon);
 389         }
 390
 391         return icon;
 392 }
 393
 394 void LogicSignal::on_trigger()
 395 {
 396         QAction *action;
 397
 398         action_from_trigger_type(trigger_match_)->setChecked(false);
 399
 400         action = (QAction *)sender();
 401         action->setChecked(true);
 402         trigger_match_ = trigger_type_from_action(action);
 403
 404         modify_trigger();
 405 }
 406
 407 } // namespace view
 408 } // namespace pv