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(
  76         pv::SigSession &session,
  77         shared_ptr<Device> device,
  78         shared_ptr<Channel> channel,
  79         shared_ptr<data::Logic> data) :
  80         Signal(session, channel),
  81         _device(device),
  82         _data(data),
  83         _trigger_none(NULL),
  84         _trigger_rising(NULL),
  85         _trigger_high(NULL),
  86         _trigger_falling(NULL),
  87         _trigger_low(NULL),
  88         _trigger_change(NULL)
  89 {
  90         shared_ptr<Trigger> trigger;
  91
  92         _colour = SignalColours[channel->index() % countof(SignalColours)];
  93
  94         /* Populate this channel's trigger setting with whatever we
  95          * find in the current session trigger, if anything. */
  96         _trigger_match = nullptr;
  97         if ((trigger = SigSession::_sr_session->trigger()))
  98                 for (auto stage : trigger->stages())
  99                         for (auto match : stage->matches())
 100                                 if (match->channel() == _channel)
 101                                         _trigger_match = match->type();
 102 }
 103
 104 LogicSignal::~LogicSignal()
 105 {
 106 }
 107
 108 shared_ptr<pv::data::SignalData> LogicSignal::data() const
 109 {
 110         return _data;
 111 }
 112
 113 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
 114 {
 115         return _data;
 116 }
 117
 118 void LogicSignal::paint_back(QPainter &p, int left, int right)
 119 {
 120         if (_channel->enabled())
 121                 paint_axis(p, get_y(), left, right);
 122 }
 123
 124 void LogicSignal::paint_mid(QPainter &p, int left, int right)
 125 {
 126         using pv::view::View;
 127
 128         QLineF *line;
 129
 130         vector< pair<int64_t, bool> > edges;
 131
 132         assert(_channel);
 133         assert(_data);
 134         assert(right >= left);
 135
 136         assert(_view);
 137         const int y = _v_offset - _view->v_offset();
 138
 139         const double scale = _view->scale();
 140         assert(scale > 0);
 141
 142         const double offset = _view->offset();
 143
 144         if (!_channel->enabled())
 145                 return;
 146
 147         const float high_offset = y - View::SignalHeight + 0.5f;
 148         const float low_offset = y + 0.5f;
 149
 150         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 151                 _data->get_snapshots();
 152         if (snapshots.empty())
 153                 return;
 154
 155         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 156                 snapshots.front();
 157
 158         double samplerate = _data->samplerate();
 159
 160         // Show sample rate as 1Hz when it is unknown
 161         if (samplerate == 0.0)
 162                 samplerate = 1.0;
 163
 164         const double pixels_offset = offset / scale;
 165         const double start_time = _data->get_start_time();
 166         const int64_t last_sample = snapshot->get_sample_count() - 1;
 167         const double samples_per_pixel = samplerate * scale;
 168         const double start = samplerate * (offset - start_time);
 169         const double end = start + samples_per_pixel * (right - left);
 170
 171         snapshot->get_subsampled_edges(edges,
 172                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 173                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 174                 samples_per_pixel / Oversampling, _channel->index());
 175         assert(edges.size() >= 2);
 176
 177         // Paint the edges
 178         const unsigned int edge_count = edges.size() - 2;
 179         QLineF *const edge_lines = new QLineF[edge_count];
 180         line = edge_lines;
 181
 182         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 183                 const float x = ((*i).first / samples_per_pixel -
 184                         pixels_offset) + left;
 185                 *line++ = QLineF(x, high_offset, x, low_offset);
 186         }
 187
 188         p.setPen(EdgeColour);
 189         p.drawLines(edge_lines, edge_count);
 190         delete[] edge_lines;
 191
 192         // Paint the caps
 193         const unsigned int max_cap_line_count = edges.size();
 194         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 195
 196         p.setPen(HighColour);
 197         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 198                 pixels_offset, left, high_offset);
 199         p.setPen(LowColour);
 200         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 201                 pixels_offset, left, low_offset);
 202
 203         delete[] cap_lines;
 204 }
 205
 206 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 207         vector< pair<int64_t, bool> > &edges, bool level,
 208         double samples_per_pixel, double pixels_offset, float x_offset,
 209         float y_offset)
 210 {
 211         QLineF *line = lines;
 212
 213         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 214                 if ((*i).second == level) {
 215                         *line++ = QLineF(
 216                                 ((*i).first / samples_per_pixel -
 217                                         pixels_offset) + x_offset, y_offset,
 218                                 ((*(i+1)).first / samples_per_pixel -
 219                                         pixels_offset) + x_offset, y_offset);
 220                 }
 221
 222         p.drawLines(lines, line - lines);
 223 }
 224
 225 void LogicSignal::init_trigger_actions(QWidget *parent)
 226 {
 227         _trigger_none = new QAction(QIcon(":/icons/trigger-none.svg"),
 228                 tr("No trigger"), parent);
 229         _trigger_none->setCheckable(true);
 230         connect(_trigger_none, SIGNAL(triggered()), this, SLOT(on_trigger()));
 231
 232         _trigger_rising = new QAction(QIcon(":/icons/trigger-rising.svg"),
 233                 tr("Trigger on rising edge"), parent);
 234         _trigger_rising->setCheckable(true);
 235         connect(_trigger_rising, SIGNAL(triggered()), this, SLOT(on_trigger()));
 236
 237         _trigger_high = new QAction(QIcon(":/icons/trigger-high.svg"),
 238                 tr("Trigger on high level"), parent);
 239         _trigger_high->setCheckable(true);
 240         connect(_trigger_high, SIGNAL(triggered()), this, SLOT(on_trigger()));
 241
 242         _trigger_falling = new QAction(QIcon(":/icons/trigger-falling.svg"),
 243                 tr("Trigger on falling edge"), parent);
 244         _trigger_falling->setCheckable(true);
 245         connect(_trigger_falling, SIGNAL(triggered()), this, SLOT(on_trigger()));
 246
 247         _trigger_low = new QAction(QIcon(":/icons/trigger-low.svg"),
 248                 tr("Trigger on low level"), parent);
 249         _trigger_low->setCheckable(true);
 250         connect(_trigger_low, SIGNAL(triggered()), this, SLOT(on_trigger()));
 251
 252         _trigger_change = new QAction(QIcon(":/icons/trigger-change.svg"),
 253                 tr("Trigger on rising or falling edge"), parent);
 254         _trigger_change->setCheckable(true);
 255         connect(_trigger_change, SIGNAL(triggered()), this, SLOT(on_trigger()));
 256 }
 257
 258 QAction* LogicSignal::match_action(const TriggerMatchType *type)
 259 {
 260         QAction *action;
 261
 262         action = _trigger_none;
 263         switch (type->id()) {
 264         case SR_TRIGGER_ZERO:
 265                 action = _trigger_low;
 266                 break;
 267         case SR_TRIGGER_ONE:
 268                 action = _trigger_high;
 269                 break;
 270         case SR_TRIGGER_RISING:
 271                 action = _trigger_rising;
 272                 break;
 273         case SR_TRIGGER_FALLING:
 274                 action = _trigger_falling;
 275                 break;
 276         case SR_TRIGGER_EDGE:
 277                 action = _trigger_change;
 278                 break;
 279         default:
 280                 assert(0);
 281         }
 282
 283         return action;
 284 }
 285
 286 const TriggerMatchType *LogicSignal::action_match(QAction *action)
 287 {
 288         if (action == _trigger_low)
 289                 return TriggerMatchType::ZERO;
 290         else if (action == _trigger_high)
 291                 return TriggerMatchType::ONE;
 292         else if (action == _trigger_rising)
 293                 return TriggerMatchType::RISING;
 294         else if (action == _trigger_falling)
 295                 return TriggerMatchType::FALLING;
 296         else if (action == _trigger_change)
 297                 return TriggerMatchType::EDGE;
 298         else
 299                 return nullptr;
 300 }
 301
 302 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 303 {
 304         Glib::VariantContainerBase gvar;
 305         vector<int32_t> trig_types;
 306
 307         Signal::populate_popup_form(parent, form);
 308
 309         try {
 310                 gvar = _device->config_list(ConfigKey::TRIGGER_MATCH);
 311         } catch (Error e) {
 312                 return;
 313         }
 314
 315         _trigger_bar = new QToolBar(parent);
 316         init_trigger_actions(_trigger_bar);
 317         _trigger_bar->addAction(_trigger_none);
 318         trig_types =
 319                 Glib::VariantBase::cast_dynamic<Glib::Variant<vector<int32_t>>>(
 320                         gvar).get();
 321         for (auto type_id : trig_types) {
 322                 auto type = TriggerMatchType::get(type_id);
 323                 _trigger_bar->addAction(match_action(type));
 324                 match_action(type)->setChecked(_trigger_match == type);
 325         }
 326         form->addRow(tr("Trigger"), _trigger_bar);
 327
 328 }
 329
 330 void LogicSignal::on_trigger()
 331 {
 332         QAction *action;
 333
 334         match_action(_trigger_match)->setChecked(false);
 335
 336         action = (QAction *)sender();
 337         action->setChecked(true);
 338         _trigger_match = action_match(action);
 339
 340 }
 341
 342 } // namespace view
 343 } // namespace pv