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