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