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
  85 LogicSignal::~LogicSignal()
  86 {
  87 }
  88
  89 const list<QAction*> LogicSignal::get_context_bar_actions()
  90 {
  91         GVariant *gvar;
  92         list<QAction*> actions;
  93
  94         actions.push_back(&_name_action);
  95
  96         // Add the trigger actions
  97         const sr_dev_inst *const sdi = _session.get_device();
  98         if (sr_config_list(sdi->driver, SR_CONF_TRIGGER_TYPE,
  99                 &gvar, sdi) == SR_OK) {
 100                 const char *const trig_types =
 101                         g_variant_get_string(gvar, NULL);
 102
 103                 if (trig_types && trig_types[0] != '\0') {
 104                         actions.push_back(&_separator);
 105
 106                         actions.push_back(&_trigger_none);
 107
 108                         add_trigger_action(trig_types, 'r',
 109                                 &_trigger_rising, actions);
 110                         add_trigger_action(trig_types, '1',
 111                                 &_trigger_high, actions);
 112                         add_trigger_action(trig_types, 'f',
 113                                 &_trigger_falling, actions);
 114                         add_trigger_action(trig_types, '0',
 115                                 &_trigger_low, actions);
 116                         add_trigger_action(trig_types, 'c',
 117                                 &_trigger_change, actions);
 118                 }
 119
 120                 g_variant_unref(gvar);
 121         }
 122
 123         return actions;
 124 }
 125
 126 void LogicSignal::paint(QPainter &p, int y, int left, int right,
 127                 double scale, double offset)
 128 {
 129         using pv::view::View;
 130
 131         QLineF *line;
 132
 133         vector< pair<int64_t, bool> > edges;
 134
 135         assert(_probe);
 136         assert(scale > 0);
 137         assert(_data);
 138         assert(right >= left);
 139
 140         if (!_probe->enabled)
 141                 return;
 142
 143         paint_axis(p, y, left, right);
 144
 145         const float high_offset = y - View::SignalHeight + 0.5f;
 146         const float low_offset = y + 0.5f;
 147
 148         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 149                 _data->get_snapshots();
 150         if (snapshots.empty())
 151                 return;
 152
 153         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 154                 snapshots.front();
 155
 156         double samplerate = _data->get_samplerate();
 157
 158         // Show sample rate as 1Hz when it is unknown
 159         if (samplerate == 0.0)
 160                 samplerate = 1.0;
 161
 162         const double pixels_offset = offset / scale;
 163         const double start_time = _data->get_start_time();
 164         const int64_t last_sample = snapshot->get_sample_count() - 1;
 165         const double samples_per_pixel = samplerate * scale;
 166         const double start = samplerate * (offset - start_time);
 167         const double end = start + samples_per_pixel * (right - left);
 168
 169         snapshot->get_subsampled_edges(edges,
 170                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 171                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 172                 samples_per_pixel / Oversampling, _probe->index);
 173         assert(edges.size() >= 2);
 174
 175         // Paint the edges
 176         const unsigned int edge_count = edges.size() - 2;
 177         QLineF *const edge_lines = new QLineF[edge_count];
 178         line = edge_lines;
 179
 180         for (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 181                         edges.begin() + 1;
 182                 i != edges.end() - 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() - 1);
 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 (vector<pv::data::LogicSnapshot::EdgePair>::const_iterator i =
 214                 edges.begin(); i != (edges.end() - 1); i++)
 215                 if ((*i).second == level) {
 216                         *line++ = QLineF(
 217                                 ((*i).first / samples_per_pixel -
 218                                         pixels_offset) + x_offset, y_offset,
 219                                 ((*(i+1)).first / samples_per_pixel -
 220                                         pixels_offset) + x_offset, y_offset);
 221                 }
 222
 223         p.drawLines(lines, line - lines);
 224 }
 225
 226 void LogicSignal::add_trigger_action(const char *trig_types, char type,
 227         QAction *action, list<QAction*> &actions)
 228 {
 229         while(*trig_types)
 230                 if(*trig_types++ == type) {
 231                         actions.push_back(action);
 232                         break;
 233                 }
 234 }
 235
 236 } // namespace view
 237 } // namespace pv