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
 141         const int y = get_y();
 142
 143         const double scale = _view->scale();
 144         assert(scale > 0);
 145
 146         const double offset = _view->offset();
 147
 148         if (!_channel->enabled())
 149                 return;
 150
 151         const float high_offset = y - View::SignalHeight + 0.5f;
 152         const float low_offset = y + 0.5f;
 153
 154         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 155                 _data->get_snapshots();
 156         if (snapshots.empty())
 157                 return;
 158
 159         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 160                 snapshots.front();
 161
 162         double samplerate = _data->samplerate();
 163
 164         // Show sample rate as 1Hz when it is unknown
 165         if (samplerate == 0.0)
 166                 samplerate = 1.0;
 167
 168         const double pixels_offset = offset / scale;
 169         const double start_time = _data->get_start_time();
 170         const int64_t last_sample = snapshot->get_sample_count() - 1;
 171         const double samples_per_pixel = samplerate * scale;
 172         const double start = samplerate * (offset - start_time);
 173         const double end = start + samples_per_pixel * (right - left);
 174
 175         snapshot->get_subsampled_edges(edges,
 176                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 177                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 178                 samples_per_pixel / Oversampling, _channel->index());
 179         assert(edges.size() >= 2);
 180
 181         // Paint the edges
 182         const unsigned int edge_count = edges.size() - 2;
 183         QLineF *const edge_lines = new QLineF[edge_count];
 184         line = edge_lines;
 185
 186         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 187                 const float x = ((*i).first / samples_per_pixel -
 188                         pixels_offset) + left;
 189                 *line++ = QLineF(x, high_offset, x, low_offset);
 190         }
 191
 192         p.setPen(EdgeColour);
 193         p.drawLines(edge_lines, edge_count);
 194         delete[] edge_lines;
 195
 196         // Paint the caps
 197         const unsigned int max_cap_line_count = edges.size();
 198         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 199
 200         p.setPen(HighColour);
 201         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 202                 pixels_offset, left, high_offset);
 203         p.setPen(LowColour);
 204         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 205                 pixels_offset, left, low_offset);
 206
 207         delete[] cap_lines;
 208 }
 209
 210 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 211         vector< pair<int64_t, bool> > &edges, bool level,
 212         double samples_per_pixel, double pixels_offset, float x_offset,
 213         float y_offset)
 214 {
 215         QLineF *line = lines;
 216
 217         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 218                 if ((*i).second == level) {
 219                         *line++ = QLineF(
 220                                 ((*i).first / samples_per_pixel -
 221                                         pixels_offset) + x_offset, y_offset,
 222                                 ((*(i+1)).first / samples_per_pixel -
 223                                         pixels_offset) + x_offset, y_offset);
 224                 }
 225
 226         p.drawLines(lines, line - lines);
 227 }
 228
 229 void LogicSignal::init_trigger_actions(QWidget *parent)
 230 {
 231         _trigger_none = new QAction(QIcon(":/icons/trigger-none.svg"),
 232                 tr("No trigger"), parent);
 233         _trigger_none->setCheckable(true);
 234         connect(_trigger_none, SIGNAL(triggered()), this, SLOT(on_trigger()));
 235
 236         _trigger_rising = new QAction(QIcon(":/icons/trigger-rising.svg"),
 237                 tr("Trigger on rising edge"), parent);
 238         _trigger_rising->setCheckable(true);
 239         connect(_trigger_rising, SIGNAL(triggered()), this, SLOT(on_trigger()));
 240
 241         _trigger_high = new QAction(QIcon(":/icons/trigger-high.svg"),
 242                 tr("Trigger on high level"), parent);
 243         _trigger_high->setCheckable(true);
 244         connect(_trigger_high, SIGNAL(triggered()), this, SLOT(on_trigger()));
 245
 246         _trigger_falling = new QAction(QIcon(":/icons/trigger-falling.svg"),
 247                 tr("Trigger on falling edge"), parent);
 248         _trigger_falling->setCheckable(true);
 249         connect(_trigger_falling, SIGNAL(triggered()), this, SLOT(on_trigger()));
 250
 251         _trigger_low = new QAction(QIcon(":/icons/trigger-low.svg"),
 252                 tr("Trigger on low level"), parent);
 253         _trigger_low->setCheckable(true);
 254         connect(_trigger_low, SIGNAL(triggered()), this, SLOT(on_trigger()));
 255
 256         _trigger_change = new QAction(QIcon(":/icons/trigger-change.svg"),
 257                 tr("Trigger on rising or falling edge"), parent);
 258         _trigger_change->setCheckable(true);
 259         connect(_trigger_change, SIGNAL(triggered()), this, SLOT(on_trigger()));
 260 }
 261
 262 QAction* LogicSignal::match_action(const TriggerMatchType *type)
 263 {
 264         QAction *action;
 265
 266         action = _trigger_none;
 267         if (type) {
 268                 switch (type->id()) {
 269                 case SR_TRIGGER_ZERO:
 270                         action = _trigger_low;
 271                         break;
 272                 case SR_TRIGGER_ONE:
 273                         action = _trigger_high;
 274                         break;
 275                 case SR_TRIGGER_RISING:
 276                         action = _trigger_rising;
 277                         break;
 278                 case SR_TRIGGER_FALLING:
 279                         action = _trigger_falling;
 280                         break;
 281                 case SR_TRIGGER_EDGE:
 282                         action = _trigger_change;
 283                         break;
 284                 default:
 285                         assert(0);
 286                 }
 287         }
 288
 289         return action;
 290 }
 291
 292 const TriggerMatchType *LogicSignal::action_match(QAction *action)
 293 {
 294         if (action == _trigger_low)
 295                 return TriggerMatchType::ZERO;
 296         else if (action == _trigger_high)
 297                 return TriggerMatchType::ONE;
 298         else if (action == _trigger_rising)
 299                 return TriggerMatchType::RISING;
 300         else if (action == _trigger_falling)
 301                 return TriggerMatchType::FALLING;
 302         else if (action == _trigger_change)
 303                 return TriggerMatchType::EDGE;
 304         else
 305                 return nullptr;
 306 }
 307
 308 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 309 {
 310         Glib::VariantContainerBase gvar;
 311         vector<int32_t> trig_types;
 312
 313         Signal::populate_popup_form(parent, form);
 314
 315         try {
 316                 gvar = _device->config_list(ConfigKey::TRIGGER_MATCH);
 317         } catch (Error e) {
 318                 return;
 319         }
 320
 321         _trigger_bar = new QToolBar(parent);
 322         init_trigger_actions(_trigger_bar);
 323         _trigger_bar->addAction(_trigger_none);
 324         _trigger_none->setChecked(!_trigger_match);
 325         trig_types =
 326                 Glib::VariantBase::cast_dynamic<Glib::Variant<vector<int32_t>>>(
 327                         gvar).get();
 328         for (auto type_id : trig_types) {
 329                 auto type = TriggerMatchType::get(type_id);
 330                 _trigger_bar->addAction(match_action(type));
 331                 match_action(type)->setChecked(_trigger_match == type);
 332         }
 333         form->addRow(tr("Trigger"), _trigger_bar);
 334
 335 }
 336
 337 void LogicSignal::modify_trigger()
 338 {
 339         auto trigger = _session.session()->trigger();
 340         auto new_trigger = _session.device_manager().context()->create_trigger("pulseview");
 341
 342         if (trigger) {
 343                 for (auto stage : trigger->stages()) {
 344                         const auto &matches = stage->matches();
 345                         if (std::none_of(begin(matches), end(matches),
 346                             [&](shared_ptr<TriggerMatch> match) {
 347                                         return match->channel() != _channel; }))
 348                                 continue;
 349
 350                         auto new_stage = new_trigger->add_stage();
 351                         for (auto match : stage->matches()) {
 352                                 if (match->channel() == _channel)
 353                                         continue;
 354                                 new_stage->add_match(match->channel(), match->type());
 355                         }
 356                 }
 357         }
 358
 359         if (_trigger_match)
 360                 new_trigger->add_stage()->add_match(_channel, _trigger_match);
 361
 362         _session.session()->set_trigger(
 363                 new_trigger->stages().empty() ? nullptr : new_trigger);
 364 }
 365
 366 void LogicSignal::on_trigger()
 367 {
 368         QAction *action;
 369
 370         match_action(_trigger_match)->setChecked(false);
 371
 372         action = (QAction *)sender();
 373         action->setChecked(true);
 374         _trigger_match = action_match(action);
 375
 376         modify_trigger();
 377 }
 378
 379 } // namespace view
 380 } // namespace pv