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 <math.h>
  24
  25 #include "logicsignal.h"
  26 #include "view.h"
  27
  28 #include "pv/sigsession.h"
  29 #include "pv/data/logic.h"
  30 #include "pv/data/logicsnapshot.h"
  31 #include "pv/view/view.h"
  32
  33 using namespace boost;
  34 using namespace std;
  35
  36 namespace pv {
  37 namespace view {
  38
  39 const float LogicSignal::Oversampling = 2.0f;
  40
  41 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
  42 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
  43 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
  44
  45 const QColor LogicSignal::SignalColours[10] = {
  46         QColor(0x16, 0x19, 0x1A),       // Black
  47         QColor(0x8F, 0x52, 0x02),       // Brown
  48         QColor(0xCC, 0x00, 0x00),       // Red
  49         QColor(0xF5, 0x79, 0x00),       // Orange
  50         QColor(0xED, 0xD4, 0x00),       // Yellow
  51         QColor(0x73, 0xD2, 0x16),       // Green
  52         QColor(0x34, 0x65, 0xA4),       // Blue
  53         QColor(0x75, 0x50, 0x7B),       // Violet
  54         QColor(0x88, 0x8A, 0x85),       // Grey
  55         QColor(0xEE, 0xEE, 0xEC),       // White
  56 };
  57
  58 LogicSignal::LogicSignal(pv::SigSession &session, const sr_probe *const probe,
  59         shared_ptr<data::Logic> data) :
  60         Signal(session, probe),
  61         _data(data),
  62         _separator(NULL),
  63         _trigger_none(NULL),
  64         _trigger_rising(NULL),
  65         _trigger_high(NULL),
  66         _trigger_falling(NULL),
  67         _trigger_low(NULL),
  68         _trigger_change(NULL)
  69 {
  70         _colour = SignalColours[probe->index % countof(SignalColours)];
  71 }
  72
  73 LogicSignal::~LogicSignal()
  74 {
  75 }
  76
  77 void LogicSignal::init_context_bar_actions(QWidget *parent)
  78 {
  79         Signal::init_context_bar_actions(parent);
  80
  81         _separator = new QAction(parent);
  82         _separator->setSeparator(true);
  83
  84         _trigger_none = new QAction(QIcon(":/icons/trigger-none.svg"),
  85                 tr("No trigger"), this);
  86         _trigger_none->setCheckable(true);
  87         connect(_trigger_none, SIGNAL(triggered()),
  88                 this, SLOT(on_trigger_none()));
  89
  90         _trigger_rising = new QAction(QIcon(":/icons/trigger-rising.svg"),
  91                 tr("Trigger on rising edge"), this);
  92         _trigger_rising->setCheckable(true);
  93         connect(_trigger_rising, SIGNAL(triggered()),
  94                 this, SLOT(on_trigger_rising()));
  95
  96         _trigger_high = new QAction(QIcon(":/icons/trigger-low.svg"),
  97                 tr("Trigger on high level"), this);
  98         _trigger_high->setCheckable(true);
  99         connect(_trigger_high, SIGNAL(triggered()),
 100                 this, SLOT(on_trigger_high()));
 101
 102         _trigger_falling = new QAction(QIcon(":/icons/trigger-falling.svg"),
 103                 tr("Trigger on falling edge"), this);
 104         _trigger_falling->setCheckable(true);
 105         connect(_trigger_falling, SIGNAL(triggered()),
 106                 this, SLOT(on_trigger_falling()));
 107
 108         _trigger_low = new QAction(QIcon(":/icons/trigger-low.svg"),
 109                 tr("Trigger on low level"), this);
 110         _trigger_low->setCheckable(true);
 111         connect(_trigger_low, SIGNAL(triggered()),
 112                 this, SLOT(on_trigger_low()));
 113
 114         _trigger_change = new QAction(QIcon(":/icons/trigger-change.svg"),
 115                 tr("Trigger on rising or falling edge"), this);
 116         _trigger_change->setCheckable(true);
 117         connect(_trigger_change, SIGNAL(triggered()),
 118                 this, SLOT(on_trigger_change()));
 119 }
 120
 121 boost::shared_ptr<pv::data::Logic> LogicSignal::data() const
 122 {
 123         return _data;
 124 }
 125
 126 const list<QAction*> LogicSignal::get_context_bar_actions()
 127 {
 128         GVariant *gvar;
 129         list<QAction*> actions;
 130
 131         actions.push_back(_name_action);
 132
 133         // Add the trigger actions
 134         const sr_dev_inst *const sdi = _session.get_device();
 135         if (sr_config_list(sdi->driver, SR_CONF_TRIGGER_TYPE,
 136                 &gvar, sdi) == SR_OK) {
 137                 const char *const trig_types =
 138                         g_variant_get_string(gvar, NULL);
 139
 140                 if (trig_types && trig_types[0] != '\0') {
 141                         actions.push_back(_separator);
 142
 143                         actions.push_back(_trigger_none);
 144
 145                         add_trigger_action(trig_types, 'r',
 146                                 _trigger_rising, actions);
 147                         add_trigger_action(trig_types, '1',
 148                                 _trigger_high, actions);
 149                         add_trigger_action(trig_types, 'f',
 150                                 _trigger_falling, actions);
 151                         add_trigger_action(trig_types, '0',
 152                                 _trigger_low, actions);
 153                         add_trigger_action(trig_types, 'c',
 154                                 _trigger_change, actions);
 155
 156                         update_trigger_actions();
 157                 }
 158
 159                 g_variant_unref(gvar);
 160         }
 161
 162         return actions;
 163 }
 164
 165 void LogicSignal::paint(QPainter &p, int left, int right)
 166 {
 167         using pv::view::View;
 168
 169         QLineF *line;
 170
 171         vector< pair<int64_t, bool> > edges;
 172
 173         assert(_probe);
 174         assert(_data);
 175         assert(right >= left);
 176
 177         assert(_view);
 178         const int y = _v_offset - _view->v_offset();
 179
 180         const double scale = _view->scale();
 181         assert(scale > 0);
 182
 183         const double offset = _view->offset();
 184
 185         if (!_probe->enabled)
 186                 return;
 187
 188         paint_axis(p, y, left, right);
 189
 190         const float high_offset = y - View::SignalHeight + 0.5f;
 191         const float low_offset = y + 0.5f;
 192
 193         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 194                 _data->get_snapshots();
 195         if (snapshots.empty())
 196                 return;
 197
 198         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 199                 snapshots.front();
 200
 201         double samplerate = _data->get_samplerate();
 202
 203         // Show sample rate as 1Hz when it is unknown
 204         if (samplerate == 0.0)
 205                 samplerate = 1.0;
 206
 207         const double pixels_offset = offset / scale;
 208         const double start_time = _data->get_start_time();
 209         const int64_t last_sample = snapshot->get_sample_count() - 1;
 210         const double samples_per_pixel = samplerate * scale;
 211         const double start = samplerate * (offset - start_time);
 212         const double end = start + samples_per_pixel * (right - left);
 213
 214         snapshot->get_subsampled_edges(edges,
 215                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 216                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 217                 samples_per_pixel / Oversampling, _probe->index);
 218         assert(edges.size() >= 2);
 219
 220         // Paint the edges
 221         const unsigned int edge_count = edges.size() - 2;
 222         QLineF *const edge_lines = new QLineF[edge_count];
 223         line = edge_lines;
 224
 225         for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 226                         edges.begin() + 1;
 227                 i != edges.end() - 1; i++) {
 228                 const float x = ((*i).first / samples_per_pixel -
 229                         pixels_offset) + left;
 230                 *line++ = QLineF(x, high_offset, x, low_offset);
 231         }
 232
 233         p.setPen(EdgeColour);
 234         p.drawLines(edge_lines, edge_count);
 235         delete[] edge_lines;
 236
 237         // Paint the caps
 238         const unsigned int max_cap_line_count = (edges.size() - 1);
 239         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 240
 241         p.setPen(HighColour);
 242         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 243                 pixels_offset, left, high_offset);
 244         p.setPen(LowColour);
 245         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 246                 pixels_offset, left, low_offset);
 247
 248         delete[] cap_lines;
 249 }
 250
 251 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 252         vector< pair<int64_t, bool> > &edges, bool level,
 253         double samples_per_pixel, double pixels_offset, float x_offset,
 254         float y_offset)
 255 {
 256         QLineF *line = lines;
 257
 258         for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 259                 edges.begin(); i != (edges.end() - 1); i++)
 260                 if ((*i).second == level) {
 261                         *line++ = QLineF(
 262                                 ((*i).first / samples_per_pixel -
 263                                         pixels_offset) + x_offset, y_offset,
 264                                 ((*(i+1)).first / samples_per_pixel -
 265                                         pixels_offset) + x_offset, y_offset);
 266                 }
 267
 268         p.drawLines(lines, line - lines);
 269 }
 270
 271 void LogicSignal::add_trigger_action(const char *trig_types, char type,
 272         QAction *action, list<QAction*> &actions)
 273 {
 274         while(*trig_types)
 275                 if(*trig_types++ == type) {
 276                         actions.push_back(action);
 277                         break;
 278                 }
 279 }
 280
 281 void LogicSignal::update_trigger_actions()
 282 {
 283         const char cur_trigger = _probe->trigger ?
 284                 _probe->trigger[0] : '\0';
 285         _trigger_none->setChecked(cur_trigger == '\0');
 286         _trigger_rising->setChecked(cur_trigger == 'r');
 287         _trigger_high->setChecked(cur_trigger == '1');
 288         _trigger_falling->setChecked(cur_trigger == 'f');
 289         _trigger_low->setChecked(cur_trigger == '0');
 290         _trigger_change->setChecked(cur_trigger == 'c');
 291 }
 292
 293 void LogicSignal::set_trigger(char type)
 294 {
 295         const char trigger_type_string[2] = {type, 0};
 296         const char *const trigger_string =
 297                 (type != 0) ? trigger_type_string : NULL;
 298
 299         const sr_dev_inst *const sdi = _session.get_device();
 300         const int probe_count = g_slist_length(sdi->probes);
 301         assert(probe_count > 0);
 302
 303         assert(_probe && _probe->index < probe_count);
 304
 305         for (int i = 0; i < probe_count; i++) {
 306                 sr_dev_trigger_set(sdi, i, (i == _probe->index) ?
 307                         trigger_string : NULL);
 308         }
 309
 310         update_trigger_actions();
 311 }
 312
 313 void LogicSignal::on_trigger_none()
 314 {
 315         set_trigger('\0');
 316 }
 317
 318 void LogicSignal::on_trigger_rising()
 319 {
 320         set_trigger('r');
 321 }
 322
 323 void LogicSignal::on_trigger_high()
 324 {
 325         set_trigger('1');
 326 }
 327
 328 void LogicSignal::on_trigger_falling()
 329 {
 330         set_trigger('f');
 331 }
 332
 333 void LogicSignal::on_trigger_low()
 334 {
 335         set_trigger('0');
 336 }
 337
 338 void LogicSignal::on_trigger_change()
 339 {
 340         set_trigger('c');
 341 }
 342
 343 } // namespace view
 344 } // namespace pv