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