2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
28 #include <QApplication>
31 #include <QFormLayout>
32 #include <QGridLayout>
37 #include "analogsignal.hpp"
38 #include "pv/data/analog.hpp"
39 #include "pv/data/analogsegment.hpp"
40 #include "pv/data/logic.hpp"
41 #include "pv/data/logicsegment.hpp"
42 #include "pv/data/signalbase.hpp"
43 #include "pv/view/view.hpp"
44 #include "pv/view/logicsignal.hpp"
45 #include "pv/globalsettings.hpp"
47 #include <libsigrokcxx/libsigrokcxx.hpp>
55 using std::numeric_limits;
57 using std::shared_ptr;
64 const QColor AnalogSignal::SignalColours[4] = {
65 QColor(0xC4, 0xA0, 0x00), // Yellow
66 QColor(0x87, 0x20, 0x7A), // Magenta
67 QColor(0x20, 0x4A, 0x87), // Blue
68 QColor(0x4E, 0x9A, 0x06) // Green
71 const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40*256/100);
72 const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20*256/100);
74 const QColor AnalogSignal::SamplingPointColour(0x77, 0x77, 0x77);
76 const float AnalogSignal::EnvelopeThreshold = 256.0f;
78 const int AnalogSignal::MaximumVDivs = 10;
79 const int AnalogSignal::MinScaleIndex = -6;
80 const int AnalogSignal::MaxScaleIndex = 7;
82 const int AnalogSignal::InfoTextMarginRight = 20;
83 const int AnalogSignal::InfoTextMarginBottom = 5;
85 AnalogSignal::AnalogSignal(
87 shared_ptr<data::SignalBase> base) :
88 Signal(session, base),
89 scale_index_(4), // 20 per div
90 scale_index_drag_offset_(0),
91 div_height_(3 * QFontMetrics(QApplication::font()).height()),
95 conversion_type_(data::SignalBase::NoConversion),
96 display_type_(DisplayBoth),
99 pv::data::Analog* analog_data =
100 dynamic_cast<pv::data::Analog*>(data().get());
102 connect(analog_data, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
103 this, SLOT(on_samples_added()));
105 base_->set_colour(SignalColours[base_->index() % countof(SignalColours)]);
109 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
111 return base_->analog_data();
114 void AnalogSignal::save_settings(QSettings &settings) const
116 settings.setValue("pos_vdivs", pos_vdivs_);
117 settings.setValue("neg_vdivs", neg_vdivs_);
118 settings.setValue("scale_index", scale_index_);
119 settings.setValue("conversion_type", conversion_type_);
120 settings.setValue("display_type", display_type_);
121 settings.setValue("autoranging", autoranging_);
124 void AnalogSignal::restore_settings(QSettings &settings)
126 if (settings.contains("pos_vdivs"))
127 pos_vdivs_ = settings.value("pos_vdivs").toInt();
129 if (settings.contains("neg_vdivs"))
130 neg_vdivs_ = settings.value("neg_vdivs").toInt();
132 if (settings.contains("scale_index")) {
133 scale_index_ = settings.value("scale_index").toInt();
137 if (settings.contains("conversion_type")) {
138 conversion_type_ = (data::SignalBase::ConversionType)(settings.value("conversion_type").toInt());
139 update_conversion_type();
142 if (settings.contains("display_type"))
143 display_type_ = (DisplayType)(settings.value("display_type").toInt());
145 if (settings.contains("autoranging"))
146 autoranging_ = settings.value("autoranging").toBool();
149 pair<int, int> AnalogSignal::v_extents() const
151 const int ph = pos_vdivs_ * div_height_;
152 const int nh = neg_vdivs_ * div_height_;
153 return make_pair(-ph, nh);
156 int AnalogSignal::scale_handle_offset() const
158 const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
160 return ((scale_index_drag_offset_ - scale_index_) *
164 void AnalogSignal::scale_handle_dragged(int offset)
166 const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
168 scale_index_ = scale_index_drag_offset_ -
169 (offset + h / 2) / (h / 4);
174 void AnalogSignal::scale_handle_drag_release()
176 scale_index_drag_offset_ = scale_index_;
180 void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
182 if (base_->enabled()) {
183 Trace::paint_back(p, pp);
184 paint_axis(p, pp, get_visual_y());
188 void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
190 assert(base_->analog_data());
193 const int y = get_visual_y();
195 if (!base_->enabled())
198 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
199 paint_grid(p, y, pp.left(), pp.right());
201 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
202 base_->analog_data()->analog_segments();
203 if (segments.empty())
206 const shared_ptr<pv::data::AnalogSegment> &segment =
209 const double pixels_offset = pp.pixels_offset();
210 const double samplerate = max(1.0, segment->samplerate());
211 const pv::util::Timestamp& start_time = segment->start_time();
212 const int64_t last_sample = segment->get_sample_count() - 1;
213 const double samples_per_pixel = samplerate * pp.scale();
214 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
215 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
217 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
218 (int64_t)0), last_sample);
219 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
220 (int64_t)0), last_sample);
222 if (samples_per_pixel < EnvelopeThreshold)
223 paint_trace(p, segment, y, pp.left(),
224 start_sample, end_sample,
225 pixels_offset, samples_per_pixel);
227 paint_envelope(p, segment, y, pp.left(),
228 start_sample, end_sample,
229 pixels_offset, samples_per_pixel);
232 if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth)) {
233 if (((conversion_type_ == data::SignalBase::A2LConversionByTreshold) ||
234 (conversion_type_ == data::SignalBase::A2LConversionBySchmittTrigger))) {
236 paint_logic_mid(p, pp);
241 void AnalogSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
246 const int y = get_visual_y();
248 // Show the info section on the right side of the trace
249 const QString infotext = QString("%1 V/div").arg(resolution_);
251 p.setPen(base_->colour());
252 p.setFont(QApplication::font());
254 const QRectF bounding_rect = QRectF(pp.left(),
255 y + v_extents().first,
256 pp.width() - InfoTextMarginRight,
257 v_extents().second - v_extents().first - InfoTextMarginBottom);
259 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
262 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
264 p.setRenderHint(QPainter::Antialiasing, false);
266 if (pos_vdivs_ > 0) {
267 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
268 for (int i = 1; i <= pos_vdivs_; i++) {
269 const float dy = i * div_height_;
270 p.drawLine(QLineF(left, y - dy, right, y - dy));
273 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
274 for (int i = 0; i < pos_vdivs_; i++) {
275 const float dy = i * div_height_;
276 const float dy25 = dy + (0.25 * div_height_);
277 const float dy50 = dy + (0.50 * div_height_);
278 const float dy75 = dy + (0.75 * div_height_);
279 p.drawLine(QLineF(left, y - dy25, right, y - dy25));
280 p.drawLine(QLineF(left, y - dy50, right, y - dy50));
281 p.drawLine(QLineF(left, y - dy75, right, y - dy75));
285 if (neg_vdivs_ > 0) {
286 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
287 for (int i = 1; i <= neg_vdivs_; i++) {
288 const float dy = i * div_height_;
289 p.drawLine(QLineF(left, y + dy, right, y + dy));
292 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
293 for (int i = 0; i < neg_vdivs_; i++) {
294 const float dy = i * div_height_;
295 const float dy25 = dy + (0.25 * div_height_);
296 const float dy50 = dy + (0.50 * div_height_);
297 const float dy75 = dy + (0.75 * div_height_);
298 p.drawLine(QLineF(left, y + dy25, right, y + dy25));
299 p.drawLine(QLineF(left, y + dy50, right, y + dy50));
300 p.drawLine(QLineF(left, y + dy75, right, y + dy75));
304 p.setRenderHint(QPainter::Antialiasing, true);
307 void AnalogSignal::paint_trace(QPainter &p,
308 const shared_ptr<pv::data::AnalogSegment> &segment,
309 int y, int left, const int64_t start, const int64_t end,
310 const double pixels_offset, const double samples_per_pixel)
312 p.setPen(base_->colour());
314 const int64_t points_count = end - start;
316 QPointF *points = new QPointF[points_count];
317 QPointF *point = points;
319 QRectF *const sampling_points = new QRectF[points_count];
320 QRectF *sampling_point = sampling_points;
322 pv::data::SegmentAnalogDataIterator* it =
323 segment->begin_sample_iteration(start);
326 for (int64_t sample = start; sample != end; sample++) {
327 const float x = (sample / samples_per_pixel -
328 pixels_offset) + left;
330 *point++ = QPointF(x, y - *((float*)it->value) * scale_);
331 *sampling_point++ = QRectF(x - (w / 2), y - *((float*)it->value) * scale_ - (w / 2), w, w);
333 segment->continue_sample_iteration(it, 1);
335 segment->end_sample_iteration(it);
337 p.drawPolyline(points, points_count);
339 // Paint the sampling points if enabled
340 GlobalSettings settings;
341 const bool show_sampling_points =
342 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
344 if (show_sampling_points && (samples_per_pixel < 0.25)) {
345 p.setPen(SamplingPointColour);
346 p.drawRects(sampling_points, points_count);
350 delete[] sampling_points;
353 void AnalogSignal::paint_envelope(QPainter &p,
354 const shared_ptr<pv::data::AnalogSegment> &segment,
355 int y, int left, const int64_t start, const int64_t end,
356 const double pixels_offset, const double samples_per_pixel)
358 using pv::data::AnalogSegment;
360 AnalogSegment::EnvelopeSection e;
361 segment->get_envelope_section(e, start, end, samples_per_pixel);
366 p.setPen(QPen(Qt::NoPen));
367 p.setBrush(base_->colour());
369 QRectF *const rects = new QRectF[e.length];
370 QRectF *rect = rects;
372 for (uint64_t sample = 0; sample < e.length-1; sample++) {
373 const float x = ((e.scale * sample + e.start) /
374 samples_per_pixel - pixels_offset) + left;
375 const AnalogSegment::EnvelopeSample *const s =
378 // We overlap this sample with the next so that vertical
379 // gaps do not appear during steep rising or falling edges
380 const float b = y - max(s->max, (s+1)->min) * scale_;
381 const float t = y - min(s->min, (s+1)->max) * scale_;
384 if (h >= 0.0f && h <= 1.0f)
386 if (h <= 0.0f && h >= -1.0f)
389 *rect++ = QRectF(x, t, 1.0f, h);
392 p.drawRects(rects, e.length);
398 void AnalogSignal::paint_logic_mid(QPainter &p, const ViewItemPaintParams &pp)
402 vector< pair<int64_t, bool> > edges;
406 const int y = get_visual_y();
408 if (!base_->enabled())
411 const int signal_margin =
412 QFontMetrics(QApplication::font()).height() / 2;
414 const int ph = min(pos_vdivs_, 1) * div_height_;
415 const int nh = min(neg_vdivs_, 1) * div_height_;
416 const float high_offset = y - ph + signal_margin + 0.5f;
417 const float low_offset = y + nh - signal_margin - 0.5f;
419 const deque< shared_ptr<pv::data::LogicSegment> > &segments =
420 base_->logic_data()->logic_segments();
421 if (segments.empty())
424 const shared_ptr<pv::data::LogicSegment> &segment =
427 double samplerate = segment->samplerate();
429 // Show sample rate as 1Hz when it is unknown
430 if (samplerate == 0.0)
433 const double pixels_offset = pp.pixels_offset();
434 const pv::util::Timestamp& start_time = segment->start_time();
435 const int64_t last_sample = segment->get_sample_count() - 1;
436 const double samples_per_pixel = samplerate * pp.scale();
437 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
438 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
440 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
441 (int64_t)0), last_sample);
442 const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
443 (int64_t)0), last_sample);
445 segment->get_subsampled_edges(edges, start_sample, end_sample,
446 samples_per_pixel / LogicSignal::Oversampling, 0);
447 assert(edges.size() >= 2);
450 const unsigned int edge_count = edges.size() - 2;
451 QLineF *const edge_lines = new QLineF[edge_count];
454 for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
455 const float x = ((*i).first / samples_per_pixel -
456 pixels_offset) + pp.left();
457 *line++ = QLineF(x, high_offset, x, low_offset);
460 p.setPen(LogicSignal::EdgeColour);
461 p.drawLines(edge_lines, edge_count);
465 const unsigned int max_cap_line_count = edges.size();
466 QLineF *const cap_lines = new QLineF[max_cap_line_count];
468 p.setPen(LogicSignal::HighColour);
469 paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
470 pixels_offset, pp.left(), high_offset);
471 p.setPen(LogicSignal::LowColour);
472 paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
473 pixels_offset, pp.left(), low_offset);
477 // Return if we don't need to paint the sampling points
478 GlobalSettings settings;
479 const bool show_sampling_points =
480 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
482 if (!show_sampling_points || (samples_per_pixel >= 0.25))
485 // Paint the sampling points
486 const uint64_t sampling_points_count = end_sample - start_sample + 1;
487 QRectF *const sampling_points = new QRectF[sampling_points_count];
488 QRectF *sampling_point = sampling_points;
491 const float y_middle = high_offset - ((high_offset - low_offset) / 2);
492 for (uint64_t i = start_sample; i < end_sample + 1; ++i) {
493 const float x = (i / samples_per_pixel - pixels_offset) + pp.left();
494 *sampling_point++ = QRectF(x - (w / 2), y_middle - (w / 2), w, w);
497 p.setPen(SamplingPointColour);
498 p.drawRects(sampling_points, sampling_points_count);
499 delete[] sampling_points;
502 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
503 vector< pair<int64_t, bool> > &edges, bool level,
504 double samples_per_pixel, double pixels_offset, float x_offset,
507 QLineF *line = lines;
509 for (auto i = edges.begin(); i != (edges.end() - 1); i++)
510 if ((*i).second == level) {
512 ((*i).first / samples_per_pixel -
513 pixels_offset) + x_offset, y_offset,
514 ((*(i+1)).first / samples_per_pixel -
515 pixels_offset) + x_offset, y_offset);
518 p.drawLines(lines, line - lines);
521 float AnalogSignal::get_resolution(int scale_index)
523 const float seq[] = {1.0f, 2.0f, 5.0f};
525 const int offset = numeric_limits<int>::max() / (2 * countof(seq));
526 const div_t d = div((int)(scale_index + countof(seq) * offset),
529 return powf(10.0f, d.quot - offset) * seq[d.rem];
532 void AnalogSignal::update_scale()
534 resolution_ = get_resolution(scale_index_);
535 scale_ = div_height_ / resolution_;
538 void AnalogSignal::update_conversion_type()
540 base_->set_conversion_type(conversion_type_);
543 owner_->row_item_appearance_changed(false, true);
546 void AnalogSignal::perform_autoranging(bool force_update)
548 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
549 base_->analog_data()->analog_segments();
551 if (segments.empty())
554 static double prev_min = 0, prev_max = 0;
555 double min = 0, max = 0;
557 for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
558 pair<double, double> mm = segment->get_min_max();
559 min = std::min(min, mm.first);
560 max = std::max(max, mm.second);
563 if ((min == prev_min) && (max == prev_max) && !force_update)
569 // Use all divs for the positive range if there are no negative values
570 if ((min == 0) && (neg_vdivs_ > 0)) {
571 pos_vdivs_ += neg_vdivs_;
575 // Split up the divs if there are negative values but no negative divs
576 if ((min < 0) && (neg_vdivs_ == 0)) {
577 neg_vdivs_ = pos_vdivs_ / 2;
578 pos_vdivs_ -= neg_vdivs_;
581 double min_value_per_div;
582 if ((pos_vdivs_ > 0) && (neg_vdivs_ > 0))
583 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
584 else if (pos_vdivs_ > 0)
585 min_value_per_div = max / pos_vdivs_;
587 min_value_per_div = -min / neg_vdivs_;
589 // Find first scale value that is bigger than the value we need
590 for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
591 if (get_resolution(i) > min_value_per_div) {
599 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
601 // Add the standard options
602 Signal::populate_popup_form(parent, form);
604 QFormLayout *const layout = new QFormLayout;
606 // Add the number of vdivs
607 QSpinBox *pvdiv_sb = new QSpinBox(parent);
608 pvdiv_sb->setRange(0, MaximumVDivs);
609 pvdiv_sb->setValue(pos_vdivs_);
610 connect(pvdiv_sb, SIGNAL(valueChanged(int)),
611 this, SLOT(on_pos_vdivs_changed(int)));
612 layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb);
614 QSpinBox *nvdiv_sb = new QSpinBox(parent);
615 nvdiv_sb->setRange(0, MaximumVDivs);
616 nvdiv_sb->setValue(neg_vdivs_);
617 connect(nvdiv_sb, SIGNAL(valueChanged(int)),
618 this, SLOT(on_neg_vdivs_changed(int)));
619 layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb);
621 // Add the vertical resolution
622 resolution_cb_ = new QComboBox(parent);
624 for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
625 const QString label = QString("%1").arg(get_resolution(i));
626 resolution_cb_->insertItem(0, label, QVariant(i));
629 int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
630 resolution_cb_->setCurrentIndex(cur_idx);
632 connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
633 this, SLOT(on_resolution_changed(int)));
635 QGridLayout *const vdiv_layout = new QGridLayout;
636 QLabel *const vdiv_unit = new QLabel(tr("V/div"));
637 vdiv_layout->addWidget(resolution_cb_, 0, 0);
638 vdiv_layout->addWidget(vdiv_unit, 0, 1);
640 layout->addRow(tr("Vertical resolution"), vdiv_layout);
642 // Add the autoranging checkbox
643 QCheckBox* autoranging_cb = new QCheckBox();
644 autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
646 connect(autoranging_cb, SIGNAL(stateChanged(int)),
647 this, SLOT(on_autoranging_changed(int)));
649 layout->addRow(tr("Autoranging"), autoranging_cb);
651 // Add the conversion type dropdown
652 conversion_cb_ = new QComboBox();
654 conversion_cb_->addItem("none", data::SignalBase::NoConversion);
655 conversion_cb_->addItem("to logic via threshold", data::SignalBase::A2LConversionByTreshold);
656 conversion_cb_->addItem("to logic via schmitt-trigger", data::SignalBase::A2LConversionBySchmittTrigger);
658 cur_idx = conversion_cb_->findData(QVariant(conversion_type_));
659 conversion_cb_->setCurrentIndex(cur_idx);
661 layout->addRow(tr("Conversion"), conversion_cb_);
663 connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
664 this, SLOT(on_conversion_changed(int)));
666 // Add the display type dropdown
667 display_type_cb_ = new QComboBox();
669 display_type_cb_->addItem(tr("Analog"), DisplayAnalog);
670 display_type_cb_->addItem(tr("Converted"), DisplayConverted);
671 display_type_cb_->addItem(tr("Both"), DisplayBoth);
673 cur_idx = display_type_cb_->findData(QVariant(display_type_));
674 display_type_cb_->setCurrentIndex(cur_idx);
676 layout->addRow(tr("Traces to show:"), display_type_cb_);
678 form->addRow(layout);
681 void AnalogSignal::on_samples_added()
683 perform_autoranging();
686 // Call order is important, otherwise the lazy event handler won't work
687 owner_->extents_changed(false, true);
688 owner_->row_item_appearance_changed(false, true);
692 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
697 perform_autoranging(true);
700 // Call order is important, otherwise the lazy event handler won't work
701 owner_->extents_changed(false, true);
702 owner_->row_item_appearance_changed(false, true);
706 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
711 perform_autoranging(true);
714 // Call order is important, otherwise the lazy event handler won't work
715 owner_->extents_changed(false, true);
716 owner_->row_item_appearance_changed(false, true);
720 void AnalogSignal::on_resolution_changed(int index)
722 scale_index_ = resolution_cb_->itemData(index).toInt();
726 owner_->row_item_appearance_changed(false, true);
729 void AnalogSignal::on_autoranging_changed(int state)
731 autoranging_ = (state == Qt::Checked);
734 perform_autoranging(true);
737 // Call order is important, otherwise the lazy event handler won't work
738 owner_->extents_changed(false, true);
739 owner_->row_item_appearance_changed(false, true);
743 void AnalogSignal::on_conversion_changed(int index)
745 data::SignalBase::ConversionType old_conv_type = conversion_type_;
747 conversion_type_ = (data::SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
749 if (conversion_type_ != old_conv_type) {
750 base_->set_conversion_type(conversion_type_);
751 update_conversion_type();
755 } // namespace TraceView