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>
32 #include <QFormLayout>
33 #include <QGridLayout>
37 #include "analogsignal.hpp"
38 #include "logicsignal.hpp"
41 #include "pv/util.hpp"
42 #include "pv/data/analog.hpp"
43 #include "pv/data/analogsegment.hpp"
44 #include "pv/data/logic.hpp"
45 #include "pv/data/logicsegment.hpp"
46 #include "pv/data/signalbase.hpp"
47 #include "pv/globalsettings.hpp"
49 #include <libsigrokcxx/libsigrokcxx.hpp>
54 // Note that "using std::isnan;" is _not_ put here since that would break
55 // compilation on some platforms. Use "std::isnan()" instead in checks below.
59 using std::numeric_limits;
60 using std::out_of_range;
62 using std::shared_ptr;
65 using pv::data::LogicSegment;
66 using pv::data::SignalBase;
67 using pv::util::SIPrefix;
73 const QColor AnalogSignal::SignalColors[4] = {
74 QColor(0xC4, 0xA0, 0x00), // Yellow
75 QColor(0x87, 0x20, 0x7A), // Magenta
76 QColor(0x20, 0x4A, 0x87), // Blue
77 QColor(0x4E, 0x9A, 0x06) // Green
80 const QPen AnalogSignal::AxisPen(QColor(0, 0, 0, 30 * 256 / 100), 2);
81 const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40 * 256 / 100);
82 const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20 * 256 / 100);
84 const QColor AnalogSignal::SamplingPointColor(0x77, 0x77, 0x77);
85 const QColor AnalogSignal::SamplingPointColorLo = QColor(200, 0, 0, 80 * 256 / 100);
86 const QColor AnalogSignal::SamplingPointColorNe = QColor(0, 0, 0, 80 * 256 / 100);
87 const QColor AnalogSignal::SamplingPointColorHi = QColor(0, 200, 0, 80 * 256 / 100);
89 const QColor AnalogSignal::ThresholdColor = QColor(0, 0, 0, 30 * 256 / 100);
90 const QColor AnalogSignal::ThresholdColorLo = QColor(255, 0, 0, 8 * 256 / 100);
91 const QColor AnalogSignal::ThresholdColorNe = QColor(0, 0, 0, 10 * 256 / 100);
92 const QColor AnalogSignal::ThresholdColorHi = QColor(0, 255, 0, 8 * 256 / 100);
94 const int64_t AnalogSignal::TracePaintBlockSize = 1024 * 1024; // 4 MiB (due to float)
95 const float AnalogSignal::EnvelopeThreshold = 64.0f;
97 const int AnalogSignal::MaximumVDivs = 10;
98 const int AnalogSignal::MinScaleIndex = -6;
99 const int AnalogSignal::MaxScaleIndex = 7;
101 const int AnalogSignal::InfoTextMarginRight = 20;
102 const int AnalogSignal::InfoTextMarginBottom = 5;
104 AnalogSignal::AnalogSignal(
105 pv::Session &session,
106 shared_ptr<data::SignalBase> base) :
107 Signal(session, base),
108 scale_index_(4), // 20 per div
112 display_type_(DisplayBoth),
114 value_at_hover_pos_(std::numeric_limits<float>::quiet_NaN())
118 pv::data::Analog* analog_data =
119 dynamic_cast<pv::data::Analog*>(data().get());
121 connect(analog_data, SIGNAL(min_max_changed(float, float)),
122 this, SLOT(on_min_max_changed(float, float)));
124 GlobalSettings settings;
125 show_sampling_points_ =
126 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
128 settings.value(GlobalSettings::Key_View_FillSignalHighAreas).toBool();
129 high_fill_color_ = QColor::fromRgba(settings.value(
130 GlobalSettings::Key_View_FillSignalHighAreaColor).value<uint32_t>());
131 show_analog_minor_grid_ =
132 settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
133 conversion_threshold_disp_mode_ =
134 settings.value(GlobalSettings::Key_View_ConversionThresholdDispMode).toInt();
135 div_height_ = settings.value(GlobalSettings::Key_View_DefaultDivHeight).toInt();
137 base_->set_color(SignalColors[base_->index() % countof(SignalColors)]);
141 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
143 return base_->analog_data();
146 void AnalogSignal::save_settings(QSettings &settings) const
148 settings.setValue("pos_vdivs", pos_vdivs_);
149 settings.setValue("neg_vdivs", neg_vdivs_);
150 settings.setValue("scale_index", scale_index_);
151 settings.setValue("display_type", display_type_);
152 settings.setValue("autoranging", autoranging_);
153 settings.setValue("div_height", div_height_);
156 void AnalogSignal::restore_settings(QSettings &settings)
158 if (settings.contains("pos_vdivs"))
159 pos_vdivs_ = settings.value("pos_vdivs").toInt();
161 if (settings.contains("neg_vdivs"))
162 neg_vdivs_ = settings.value("neg_vdivs").toInt();
164 if (settings.contains("scale_index")) {
165 scale_index_ = settings.value("scale_index").toInt();
169 if (settings.contains("display_type"))
170 display_type_ = (DisplayType)(settings.value("display_type").toInt());
172 if (settings.contains("autoranging"))
173 autoranging_ = settings.value("autoranging").toBool();
175 if (settings.contains("div_height")) {
176 const int old_height = div_height_;
177 div_height_ = settings.value("div_height").toInt();
179 if ((div_height_ != old_height) && owner_) {
180 // Call order is important, otherwise the lazy event handler won't work
181 owner_->extents_changed(false, true);
182 owner_->row_item_appearance_changed(false, true);
187 pair<int, int> AnalogSignal::v_extents() const
189 const int ph = pos_vdivs_ * div_height_;
190 const int nh = neg_vdivs_ * div_height_;
191 return make_pair(-ph, nh);
194 void AnalogSignal::paint_back(QPainter &p, ViewItemPaintParams &pp)
196 if (!base_->enabled())
200 conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Background;
202 const vector<double> thresholds = base_->get_conversion_thresholds();
204 // Only display thresholds if we have some and we show analog samples
205 if ((thresholds.size() > 0) && paint_thr_bg &&
206 ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth))) {
208 const int visual_y = get_visual_y();
209 const pair<int, int> extents = v_extents();
210 const int top = visual_y + extents.first;
211 const int btm = visual_y + extents.second;
213 // Draw high/neutral/low areas
214 if (thresholds.size() == 2) {
215 int thr_lo = visual_y - thresholds[0] * scale_;
216 int thr_hi = visual_y - thresholds[1] * scale_;
217 thr_lo = min(max(thr_lo, top), btm);
218 thr_hi = min(max(thr_hi, top), btm);
220 p.fillRect(QRectF(pp.left(), top, pp.width(), thr_hi - top),
221 QBrush(ThresholdColorHi));
222 p.fillRect(QRectF(pp.left(), thr_hi, pp.width(), thr_lo - thr_hi),
223 QBrush(ThresholdColorNe));
224 p.fillRect(QRectF(pp.left(), thr_lo, pp.width(), btm - thr_lo),
225 QBrush(ThresholdColorLo));
227 int thr = visual_y - thresholds[0] * scale_;
228 thr = min(max(thr, top), btm);
230 p.fillRect(QRectF(pp.left(), top, pp.width(), thr - top),
231 QBrush(ThresholdColorHi));
232 p.fillRect(QRectF(pp.left(), thr, pp.width(), btm - thr),
233 QBrush(ThresholdColorLo));
236 paint_axis(p, pp, get_visual_y());
238 Signal::paint_back(p, pp);
239 paint_axis(p, pp, get_visual_y());
243 void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
245 assert(base_->analog_data());
248 const int y = get_visual_y();
250 if (!base_->enabled())
253 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
254 paint_grid(p, y, pp.left(), pp.right());
256 shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
257 if (!segment || (segment->get_sample_count() == 0))
260 const double pixels_offset = pp.pixels_offset();
261 const double samplerate = max(1.0, segment->samplerate());
262 const pv::util::Timestamp& start_time = segment->start_time();
263 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
264 const double samples_per_pixel = samplerate * pp.scale();
265 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
266 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
268 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
269 (int64_t)0), last_sample);
270 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
271 (int64_t)0), last_sample);
273 if (samples_per_pixel < EnvelopeThreshold)
274 paint_trace(p, segment, y, pp.left(), start_sample, end_sample,
275 pixels_offset, samples_per_pixel);
277 paint_envelope(p, segment, y, pp.left(), start_sample, end_sample,
278 pixels_offset, samples_per_pixel);
281 if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth))
282 paint_logic_mid(p, pp);
285 void AnalogSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
290 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
291 const int y = get_visual_y();
295 // Show the info section on the right side of the trace, including
296 // the value at the hover point when the hover marker is enabled
297 // and we have corresponding data available
298 if (show_hover_marker_ && !std::isnan(value_at_hover_pos_)) {
299 infotext = QString("[%1] %2 V/div")
300 .arg(format_value_si(value_at_hover_pos_, SIPrefix::unspecified, 2, "V", false))
303 infotext = QString("%1 V/div").arg(resolution_);
305 p.setPen(base_->color());
306 p.setFont(QApplication::font());
308 const QRectF bounding_rect = QRectF(pp.left(),
309 y + v_extents().first,
310 pp.width() - InfoTextMarginRight,
311 v_extents().second - v_extents().first - InfoTextMarginBottom);
313 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
316 if (show_hover_marker_)
317 paint_hover_marker(p);
320 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
322 bool was_antialiased = p.testRenderHint(QPainter::Antialiasing);
323 p.setRenderHint(QPainter::Antialiasing, false);
325 if (pos_vdivs_ > 0) {
326 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
327 for (int i = 1; i <= pos_vdivs_; i++) {
328 const float dy = i * div_height_;
329 p.drawLine(QLineF(left, y - dy, right, y - dy));
333 if ((pos_vdivs_ > 0) && show_analog_minor_grid_) {
334 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
335 for (int i = 0; i < pos_vdivs_; i++) {
336 const float dy = i * div_height_;
337 const float dy25 = dy + (0.25 * div_height_);
338 const float dy50 = dy + (0.50 * div_height_);
339 const float dy75 = dy + (0.75 * div_height_);
340 p.drawLine(QLineF(left, y - dy25, right, y - dy25));
341 p.drawLine(QLineF(left, y - dy50, right, y - dy50));
342 p.drawLine(QLineF(left, y - dy75, right, y - dy75));
346 if (neg_vdivs_ > 0) {
347 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
348 for (int i = 1; i <= neg_vdivs_; i++) {
349 const float dy = i * div_height_;
350 p.drawLine(QLineF(left, y + dy, right, y + dy));
354 if ((pos_vdivs_ > 0) && show_analog_minor_grid_) {
355 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
356 for (int i = 0; i < neg_vdivs_; i++) {
357 const float dy = i * div_height_;
358 const float dy25 = dy + (0.25 * div_height_);
359 const float dy50 = dy + (0.50 * div_height_);
360 const float dy75 = dy + (0.75 * div_height_);
361 p.drawLine(QLineF(left, y + dy25, right, y + dy25));
362 p.drawLine(QLineF(left, y + dy50, right, y + dy50));
363 p.drawLine(QLineF(left, y + dy75, right, y + dy75));
367 p.setRenderHint(QPainter::Antialiasing, was_antialiased);
370 void AnalogSignal::paint_trace(QPainter &p,
371 const shared_ptr<pv::data::AnalogSegment> &segment,
372 int y, int left, const int64_t start, const int64_t end,
373 const double pixels_offset, const double samples_per_pixel)
378 bool paint_thr_dots =
379 (base_->get_conversion_type() != data::SignalBase::NoConversion) &&
380 (conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Dots);
382 vector<double> thresholds;
384 thresholds = base_->get_conversion_thresholds();
386 // Calculate and paint the sampling points if enabled and useful
387 GlobalSettings settings;
388 const bool show_sampling_points =
389 (show_sampling_points_ || paint_thr_dots) && (samples_per_pixel < 0.25);
391 p.setPen(base_->color());
393 const int64_t points_count = end - start + 1;
395 QPointF *points = new QPointF[points_count];
396 QPointF *point = points;
398 vector<QRectF> sampling_points[3];
400 int64_t sample_count = min(points_count, TracePaintBlockSize);
401 int64_t block_sample = 0;
402 float *sample_block = new float[TracePaintBlockSize];
403 segment->get_samples(start, start + sample_count, sample_block);
405 if (show_hover_marker_)
406 reset_pixel_values();
409 for (int64_t sample = start; sample <= end; sample++, block_sample++) {
411 // Fetch next block of samples if we finished the current one
412 if (block_sample == TracePaintBlockSize) {
414 sample_count = min(points_count - sample, TracePaintBlockSize);
415 segment->get_samples(sample, sample + sample_count, sample_block);
418 const float abs_x = sample / samples_per_pixel - pixels_offset;
419 const float x = left + abs_x;
421 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
423 // Generate the pixel<->value lookup table for the mouse hover
424 if (show_hover_marker_)
425 process_next_sample_value(abs_x, sample_block[block_sample]);
427 // Create the sampling points if needed
428 if (show_sampling_points) {
429 int idx = 0; // Neutral
431 if (paint_thr_dots) {
432 if (thresholds.size() == 1)
433 idx = (sample_block[block_sample] >= thresholds[0]) ? 2 : 1;
434 else if (thresholds.size() == 2) {
435 if (sample_block[block_sample] > thresholds[1])
437 else if (sample_block[block_sample] < thresholds[0])
442 sampling_points[idx].emplace_back(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
445 delete[] sample_block;
447 p.drawPolyline(points, points_count);
449 if (show_sampling_points) {
450 if (paint_thr_dots) {
451 p.setPen(SamplingPointColorNe);
452 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
453 p.setPen(SamplingPointColorLo);
454 p.drawRects(sampling_points[1].data(), sampling_points[1].size());
455 p.setPen(SamplingPointColorHi);
456 p.drawRects(sampling_points[2].data(), sampling_points[2].size());
458 p.setPen(SamplingPointColor);
459 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
466 void AnalogSignal::paint_envelope(QPainter &p,
467 const shared_ptr<pv::data::AnalogSegment> &segment,
468 int y, int left, const int64_t start, const int64_t end,
469 const double pixels_offset, const double samples_per_pixel)
471 using pv::data::AnalogSegment;
473 // Note: Envelope painting currently doesn't generate a pixel<->value lookup table
474 if (show_hover_marker_)
475 reset_pixel_values();
477 AnalogSegment::EnvelopeSection e;
478 segment->get_envelope_section(e, start, end, samples_per_pixel);
483 p.setPen(QPen(Qt::NoPen));
484 p.setBrush(base_->color());
486 QRectF *const rects = new QRectF[e.length];
487 QRectF *rect = rects;
489 for (uint64_t sample = 0; sample < e.length - 1; sample++) {
490 const float x = ((e.scale * sample + e.start) /
491 samples_per_pixel - pixels_offset) + left;
493 const AnalogSegment::EnvelopeSample *const s = e.samples + sample;
495 // We overlap this sample with the next so that vertical
496 // gaps do not appear during steep rising or falling edges
497 const float b = y - max(s->max, (s + 1)->min) * scale_;
498 const float t = y - min(s->min, (s + 1)->max) * scale_;
501 if (h >= 0.0f && h <= 1.0f)
503 if (h <= 0.0f && h >= -1.0f)
506 *rect++ = QRectF(x, t, 1.0f, h);
509 p.drawRects(rects, e.length);
515 void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
519 vector< pair<int64_t, bool> > edges;
523 const int y = get_visual_y();
525 if (!base_->enabled() || !base_->logic_data())
528 const int signal_margin =
529 QFontMetrics(QApplication::font()).height() / 2;
531 const int ph = min(pos_vdivs_, 1) * div_height_;
532 const int nh = min(neg_vdivs_, 1) * div_height_;
533 const float high_offset = y - ph + signal_margin + 0.5f;
534 const float low_offset = y + nh - signal_margin - 0.5f;
535 const float signal_height = low_offset - high_offset;
537 shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
538 if (!segment || (segment->get_sample_count() == 0))
541 double samplerate = segment->samplerate();
543 // Show sample rate as 1Hz when it is unknown
544 if (samplerate == 0.0)
547 const double pixels_offset = pp.pixels_offset();
548 const pv::util::Timestamp& start_time = segment->start_time();
549 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
550 const double samples_per_pixel = samplerate * pp.scale();
551 const double pixels_per_sample = 1 / samples_per_pixel;
552 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
553 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
555 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
556 (int64_t)0), last_sample);
557 const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
558 (int64_t)0), last_sample);
560 segment->get_subsampled_edges(edges, start_sample, end_sample,
561 samples_per_pixel / LogicSignal::Oversampling, 0);
562 assert(edges.size() >= 2);
564 const float first_sample_x =
565 pp.left() + (edges.front().first / samples_per_pixel - pixels_offset);
566 const float last_sample_x =
567 pp.left() + (edges.back().first / samples_per_pixel - pixels_offset);
569 // Check whether we need to paint the sampling points
570 const bool show_sampling_points = show_sampling_points_ && (samples_per_pixel < 0.25);
571 vector<QRectF> sampling_points;
572 float sampling_point_x = first_sample_x;
573 int64_t sampling_point_sample = start_sample;
576 if (show_sampling_points)
577 sampling_points.reserve(end_sample - start_sample + 1);
579 vector<QRectF> high_rects;
581 bool rising_edge_seen = false;
584 const unsigned int edge_count = edges.size() - 2;
585 QLineF *const edge_lines = new QLineF[edge_count];
588 if (edges.front().second) {
589 // Beginning of trace is high
590 rising_edge_x = first_sample_x;
591 rising_edge_seen = true;
594 for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
595 // Note: multiple edges occupying a single pixel are represented by an edge
596 // with undefined logic level. This means that only the first falling edge
597 // after a rising edge corresponds to said rising edge - and vice versa. If
598 // more edges with the same logic level follow, they denote multiple edges.
600 const float x = pp.left() + ((*i).first / samples_per_pixel - pixels_offset);
601 *line++ = QLineF(x, high_offset, x, low_offset);
603 if (fill_high_areas_) {
604 // Any edge terminates a high area
605 if (rising_edge_seen) {
606 const int width = x - rising_edge_x;
608 high_rects.emplace_back(rising_edge_x, high_offset,
609 width, signal_height);
610 rising_edge_seen = false;
613 // Only rising edges start high areas
616 rising_edge_seen = true;
620 if (show_sampling_points)
621 while (sampling_point_sample < (*i).first) {
622 const float y = (*i).second ? low_offset : high_offset;
623 sampling_points.emplace_back(
624 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
625 sampling_point_sample++;
626 sampling_point_x += pixels_per_sample;
630 // Calculate the sample points from the last edge to the end of the trace
631 if (show_sampling_points)
632 while ((uint64_t)sampling_point_sample <= end_sample) {
633 // Signal changed after the last edge, so the level is inverted
634 const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
635 sampling_points.emplace_back(
636 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
637 sampling_point_sample++;
638 sampling_point_x += pixels_per_sample;
641 if (fill_high_areas_) {
642 // Add last high rectangle if the signal is still high at the end of the trace
643 if (rising_edge_seen && (edges.cend() - 1)->second)
644 high_rects.emplace_back(rising_edge_x, high_offset,
645 last_sample_x - rising_edge_x, signal_height);
647 p.setPen(high_fill_color_);
648 p.setBrush(high_fill_color_);
649 p.drawRects((const QRectF*)(high_rects.data()), high_rects.size());
652 p.setPen(LogicSignal::EdgeColor);
653 p.drawLines(edge_lines, edge_count);
657 const unsigned int max_cap_line_count = edges.size();
658 QLineF *const cap_lines = new QLineF[max_cap_line_count];
660 p.setPen(LogicSignal::HighColor);
661 paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
662 pixels_offset, pp.left(), high_offset);
663 p.setPen(LogicSignal::LowColor);
664 paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
665 pixels_offset, pp.left(), low_offset);
669 // Paint the sampling points
670 if (show_sampling_points) {
671 p.setPen(SamplingPointColor);
672 p.drawRects(sampling_points.data(), sampling_points.size());
676 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
677 vector< pair<int64_t, bool> > &edges, bool level,
678 double samples_per_pixel, double pixels_offset, float x_offset,
681 QLineF *line = lines;
683 for (auto i = edges.begin(); i != (edges.end() - 1); i++)
684 if ((*i).second == level) {
686 ((*i).first / samples_per_pixel -
687 pixels_offset) + x_offset, y_offset,
688 ((*(i+1)).first / samples_per_pixel -
689 pixels_offset) + x_offset, y_offset);
692 p.drawLines(lines, line - lines);
695 shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint() const
697 shared_ptr<pv::data::AnalogSegment> segment;
699 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
700 base_->analog_data()->analog_segments();
702 if (!segments.empty()) {
703 if (segment_display_mode_ == ShowLastSegmentOnly)
704 segment = segments.back();
706 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
707 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
709 segment = segments.at(current_segment_);
710 } catch (out_of_range&) {
711 qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
719 shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() const
721 shared_ptr<pv::data::LogicSegment> segment;
723 const deque< shared_ptr<pv::data::LogicSegment> > &segments =
724 base_->logic_data()->logic_segments();
726 if (!segments.empty()) {
727 if (segment_display_mode_ == ShowLastSegmentOnly)
728 segment = segments.back();
730 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
731 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
733 segment = segments.at(current_segment_);
734 } catch (out_of_range&) {
735 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
743 float AnalogSignal::get_resolution(int scale_index)
745 const float seq[] = {1.0f, 2.0f, 5.0f};
747 const int offset = numeric_limits<int>::max() / (2 * countof(seq));
748 const div_t d = div((int)(scale_index + countof(seq) * offset),
751 return powf(10.0f, d.quot - offset) * seq[d.rem];
754 void AnalogSignal::update_scale()
756 resolution_ = get_resolution(scale_index_);
757 scale_ = div_height_ / resolution_;
760 void AnalogSignal::update_conversion_widgets()
762 SignalBase::ConversionType conv_type = base_->get_conversion_type();
764 // Enable or disable widgets depending on conversion state
765 conv_threshold_cb_->setEnabled(conv_type != SignalBase::NoConversion);
766 display_type_cb_->setEnabled(conv_type != SignalBase::NoConversion);
768 conv_threshold_cb_->clear();
770 vector < pair<QString, int> > presets = base_->get_conversion_presets();
772 // Prevent the combo box from firing the "edit text changed" signal
773 // as that would involuntarily select the first entry
774 conv_threshold_cb_->blockSignals(true);
776 // Set available options depending on chosen conversion
777 for (pair<QString, int>& preset : presets)
778 conv_threshold_cb_->addItem(preset.first, preset.second);
780 map < QString, QVariant > options = base_->get_conversion_options();
782 if (conv_type == SignalBase::A2LConversionByThreshold) {
783 const vector<double> thresholds = base_->get_conversion_thresholds(
784 SignalBase::A2LConversionByThreshold, true);
785 conv_threshold_cb_->addItem(
786 QString("%1V").arg(QString::number(thresholds[0], 'f', 1)), -1);
789 if (conv_type == SignalBase::A2LConversionBySchmittTrigger) {
790 const vector<double> thresholds = base_->get_conversion_thresholds(
791 SignalBase::A2LConversionBySchmittTrigger, true);
792 conv_threshold_cb_->addItem(QString("%1V/%2V").arg(
793 QString::number(thresholds[0], 'f', 1),
794 QString::number(thresholds[1], 'f', 1)), -1);
797 int preset_id = base_->get_current_conversion_preset();
798 conv_threshold_cb_->setCurrentIndex(
799 conv_threshold_cb_->findData(preset_id));
801 conv_threshold_cb_->blockSignals(false);
804 vector<data::LogicSegment::EdgePair> AnalogSignal::get_nearest_level_changes(uint64_t sample_pos)
809 // Return if there's no logic data or we're showing only the analog trace
810 if (!base_->logic_data() || (display_type_ == DisplayAnalog))
811 return vector<data::LogicSegment::EdgePair>();
814 return vector<LogicSegment::EdgePair>();
816 shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
817 if (!segment || (segment->get_sample_count() == 0))
818 return vector<LogicSegment::EdgePair>();
820 const View *view = owner_->view();
822 const double samples_per_pixel = base_->get_samplerate() * view->scale();
824 vector<LogicSegment::EdgePair> edges;
826 segment->get_surrounding_edges(edges, sample_pos,
827 samples_per_pixel / LogicSignal::Oversampling, 0);
830 return vector<LogicSegment::EdgePair>();
835 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
837 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
838 base_->analog_data()->analog_segments();
840 if (segments.empty())
843 static double prev_min = 0, prev_max = 0;
844 double min = 0, max = 0;
846 for (const shared_ptr<pv::data::AnalogSegment>& segment : segments) {
847 pair<double, double> mm = segment->get_min_max();
848 min = std::min(min, mm.first);
849 max = std::max(max, mm.second);
852 if ((min == prev_min) && (max == prev_max) && !force_update)
858 // If we're allowed to alter the div assignment...
860 // Use all divs for the positive range if there are no negative values
861 if ((min == 0) && (neg_vdivs_ > 0)) {
862 pos_vdivs_ += neg_vdivs_;
866 // Split up the divs if there are negative values but no negative divs
867 if ((min < 0) && (neg_vdivs_ == 0)) {
868 neg_vdivs_ = pos_vdivs_ / 2;
869 pos_vdivs_ -= neg_vdivs_;
873 // If there is still no positive div when we need it, add one
874 // (this can happen when pos_vdivs==neg_vdivs==0)
875 if ((max > 0) && (pos_vdivs_ == 0)) {
877 owner_->extents_changed(false, true);
880 // If there is still no negative div when we need it, add one
881 // (this can happen when pos_vdivs was 0 or 1 when trying to split)
882 if ((min < 0) && (neg_vdivs_ == 0)) {
884 owner_->extents_changed(false, true);
887 double min_value_per_div;
888 if ((pos_vdivs_ > 0) && (neg_vdivs_ > 0))
889 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
890 else if (pos_vdivs_ > 0)
891 min_value_per_div = max / pos_vdivs_;
893 min_value_per_div = -min / neg_vdivs_;
895 // Find first scale value that is bigger than the value we need
896 for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
897 if (get_resolution(i) > min_value_per_div) {
905 void AnalogSignal::reset_pixel_values()
907 value_at_pixel_pos_.clear();
908 current_pixel_pos_ = -1;
909 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
912 void AnalogSignal::process_next_sample_value(float x, float value)
914 // Note: NAN is used to indicate the non-existance of a value at this pixel
916 if (std::isnan(prev_value_at_pixel_)) {
918 min_value_at_pixel_ = value;
919 max_value_at_pixel_ = value;
920 prev_value_at_pixel_ = value;
921 current_pixel_pos_ = x;
923 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
926 const int pixel_pos = (int)(x + 0.5);
928 if (pixel_pos > current_pixel_pos_) {
929 if (pixel_pos - current_pixel_pos_ == 1) {
930 if (std::isnan(prev_value_at_pixel_)) {
931 value_at_pixel_pos_.push_back(prev_value_at_pixel_);
933 // Average the min/max range to create one value for the previous pixel
934 const float avg = (min_value_at_pixel_ + max_value_at_pixel_) / 2;
935 value_at_pixel_pos_.push_back(avg);
938 // Interpolate values to create values for the intermediate pixels
939 const float start_value = prev_value_at_pixel_;
940 const float end_value = value;
941 const int steps = fabs(pixel_pos - current_pixel_pos_);
942 const double gradient = (end_value - start_value) / steps;
943 for (int i = 0; i < steps; i++) {
944 if (current_pixel_pos_ + i < 0)
946 value_at_pixel_pos_.push_back(start_value + i * gradient);
950 min_value_at_pixel_ = value;
951 max_value_at_pixel_ = value;
952 prev_value_at_pixel_ = value;
953 current_pixel_pos_ = pixel_pos;
955 // Another sample for the same pixel
956 if (value < min_value_at_pixel_)
957 min_value_at_pixel_ = value;
958 if (value > max_value_at_pixel_)
959 max_value_at_pixel_ = value;
963 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
965 // Add the standard options
966 Signal::populate_popup_form(parent, form);
968 QFormLayout *const layout = new QFormLayout;
970 // Add div-related settings
971 pvdiv_sb_ = new QSpinBox(parent);
972 pvdiv_sb_->setRange(0, MaximumVDivs);
973 pvdiv_sb_->setValue(pos_vdivs_);
974 connect(pvdiv_sb_, SIGNAL(valueChanged(int)),
975 this, SLOT(on_pos_vdivs_changed(int)));
976 layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb_);
978 nvdiv_sb_ = new QSpinBox(parent);
979 nvdiv_sb_->setRange(0, MaximumVDivs);
980 nvdiv_sb_->setValue(neg_vdivs_);
981 connect(nvdiv_sb_, SIGNAL(valueChanged(int)),
982 this, SLOT(on_neg_vdivs_changed(int)));
983 layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
985 div_height_sb_ = new QSpinBox(parent);
986 div_height_sb_->setRange(20, 1000);
987 div_height_sb_->setSingleStep(5);
988 div_height_sb_->setSuffix(tr(" pixels"));
989 div_height_sb_->setValue(div_height_);
990 connect(div_height_sb_, SIGNAL(valueChanged(int)),
991 this, SLOT(on_div_height_changed(int)));
992 layout->addRow(tr("Div height"), div_height_sb_);
994 // Add the vertical resolution
995 resolution_cb_ = new QComboBox(parent);
997 for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
998 const QString label = QString("%1").arg(get_resolution(i));
999 resolution_cb_->insertItem(0, label, QVariant(i));
1002 int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
1003 resolution_cb_->setCurrentIndex(cur_idx);
1005 connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
1006 this, SLOT(on_resolution_changed(int)));
1008 QGridLayout *const vdiv_layout = new QGridLayout;
1009 QLabel *const vdiv_unit = new QLabel(tr("V/div"));
1010 vdiv_layout->addWidget(resolution_cb_, 0, 0);
1011 vdiv_layout->addWidget(vdiv_unit, 0, 1);
1013 layout->addRow(tr("Vertical resolution"), vdiv_layout);
1015 // Add the autoranging checkbox
1016 QCheckBox* autoranging_cb = new QCheckBox();
1017 autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
1019 connect(autoranging_cb, SIGNAL(stateChanged(int)),
1020 this, SLOT(on_autoranging_changed(int)));
1022 layout->addRow(tr("Autoranging"), autoranging_cb);
1024 // Add the conversion type dropdown
1025 conversion_cb_ = new QComboBox();
1027 conversion_cb_->addItem(tr("none"),
1028 SignalBase::NoConversion);
1029 conversion_cb_->addItem(tr("to logic via threshold"),
1030 SignalBase::A2LConversionByThreshold);
1031 conversion_cb_->addItem(tr("to logic via schmitt-trigger"),
1032 SignalBase::A2LConversionBySchmittTrigger);
1034 cur_idx = conversion_cb_->findData(QVariant(base_->get_conversion_type()));
1035 conversion_cb_->setCurrentIndex(cur_idx);
1037 layout->addRow(tr("Conversion"), conversion_cb_);
1039 connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
1040 this, SLOT(on_conversion_changed(int)));
1042 // Add the conversion threshold settings
1043 conv_threshold_cb_ = new QComboBox();
1044 conv_threshold_cb_->setEditable(true);
1046 layout->addRow(tr("Conversion threshold(s)"), conv_threshold_cb_);
1048 connect(conv_threshold_cb_, SIGNAL(currentIndexChanged(int)),
1049 this, SLOT(on_conv_threshold_changed(int)));
1050 connect(conv_threshold_cb_, SIGNAL(editTextChanged(const QString&)),
1051 this, SLOT(on_conv_threshold_changed())); // index will be -1
1053 // Add the display type dropdown
1054 display_type_cb_ = new QComboBox();
1056 display_type_cb_->addItem(tr("analog"), DisplayAnalog);
1057 display_type_cb_->addItem(tr("converted"), DisplayConverted);
1058 display_type_cb_->addItem(tr("analog+converted"), DisplayBoth);
1060 cur_idx = display_type_cb_->findData(QVariant(display_type_));
1061 display_type_cb_->setCurrentIndex(cur_idx);
1063 layout->addRow(tr("Show traces for"), display_type_cb_);
1065 connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
1066 this, SLOT(on_display_type_changed(int)));
1068 // Update the conversion widget contents and states
1069 update_conversion_widgets();
1071 form->addRow(layout);
1074 void AnalogSignal::hover_point_changed(const QPoint &hp)
1076 Signal::hover_point_changed(hp);
1078 // Note: Even though the view area begins at 0, we exclude 0 because
1079 // that's also the value given when the cursor is over the header to the
1080 // left of the trace paint area
1082 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1085 value_at_hover_pos_ = value_at_pixel_pos_.at(hp.x());
1086 } catch (out_of_range&) {
1087 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1092 void AnalogSignal::on_setting_changed(const QString &key, const QVariant &value)
1094 Signal::on_setting_changed(key, value);
1096 if (key == GlobalSettings::Key_View_ShowSamplingPoints)
1097 show_sampling_points_ = value.toBool();
1099 if (key == GlobalSettings::Key_View_FillSignalHighAreas)
1100 fill_high_areas_ = value.toBool();
1102 if (key == GlobalSettings::Key_View_FillSignalHighAreaColor)
1103 high_fill_color_ = QColor::fromRgba(value.value<uint32_t>());
1105 if (key == GlobalSettings::Key_View_ShowAnalogMinorGrid)
1106 show_analog_minor_grid_ = value.toBool();
1108 if (key == GlobalSettings::Key_View_ConversionThresholdDispMode) {
1109 conversion_threshold_disp_mode_ = value.toInt();
1112 owner_->row_item_appearance_changed(false, true);
1116 void AnalogSignal::on_min_max_changed(float min, float max)
1122 perform_autoranging(false, false);
1125 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
1127 if (vdivs == pos_vdivs_)
1132 // There has to be at least one div, positive or negative
1133 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1136 pvdiv_sb_->setValue(pos_vdivs_);
1140 perform_autoranging(true, true);
1142 // It could be that a positive or negative div was added, so update
1144 pvdiv_sb_->setValue(pos_vdivs_);
1145 nvdiv_sb_->setValue(neg_vdivs_);
1150 // Call order is important, otherwise the lazy event handler won't work
1151 owner_->extents_changed(false, true);
1152 owner_->row_item_appearance_changed(false, true);
1156 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
1158 if (vdivs == neg_vdivs_)
1163 // There has to be at least one div, positive or negative
1164 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1167 pvdiv_sb_->setValue(pos_vdivs_);
1171 perform_autoranging(true, true);
1173 // It could be that a positive or negative div was added, so update
1175 pvdiv_sb_->setValue(pos_vdivs_);
1176 nvdiv_sb_->setValue(neg_vdivs_);
1181 // Call order is important, otherwise the lazy event handler won't work
1182 owner_->extents_changed(false, true);
1183 owner_->row_item_appearance_changed(false, true);
1187 void AnalogSignal::on_div_height_changed(int height)
1189 div_height_ = height;
1193 // Call order is important, otherwise the lazy event handler won't work
1194 owner_->extents_changed(false, true);
1195 owner_->row_item_appearance_changed(false, true);
1199 void AnalogSignal::on_resolution_changed(int index)
1201 scale_index_ = resolution_cb_->itemData(index).toInt();
1205 owner_->row_item_appearance_changed(false, true);
1208 void AnalogSignal::on_autoranging_changed(int state)
1210 autoranging_ = (state == Qt::Checked);
1213 perform_autoranging(false, true);
1216 // Call order is important, otherwise the lazy event handler won't work
1217 owner_->extents_changed(false, true);
1218 owner_->row_item_appearance_changed(false, true);
1222 void AnalogSignal::on_conversion_changed(int index)
1224 SignalBase::ConversionType old_conv_type = base_->get_conversion_type();
1226 SignalBase::ConversionType conv_type =
1227 (SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
1229 if (conv_type != old_conv_type) {
1230 base_->set_conversion_type(conv_type);
1231 update_conversion_widgets();
1234 owner_->row_item_appearance_changed(false, true);
1238 void AnalogSignal::on_conv_threshold_changed(int index)
1240 SignalBase::ConversionType conv_type = base_->get_conversion_type();
1242 // Note: index is set to -1 if the text in the combo box matches none of
1243 // the entries in the combo box
1245 if ((index == -1) && (conv_threshold_cb_->currentText().length() == 0))
1248 // The combo box entry with the custom value has user_data set to -1
1249 const int user_data = conv_threshold_cb_->findText(
1250 conv_threshold_cb_->currentText());
1252 const bool use_custom_thr = (index == -1) || (user_data == -1);
1254 if (conv_type == SignalBase::A2LConversionByThreshold && use_custom_thr) {
1255 // Not one of the preset values, try to parse the combo box text
1256 // Note: Regex loosely based on
1257 // https://txt2re.com/index-c++.php3?s=0.1V&1&-13
1258 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1259 QString re2 = "([a-zA-Z]*)"; // SI unit
1260 QRegExp regex(re1 + re2);
1262 const QString text = conv_threshold_cb_->currentText();
1263 if (!regex.exactMatch(text))
1264 return; // String doesn't match the regex
1266 QStringList tokens = regex.capturedTexts();
1268 // For now, we simply assume that the unit is volt without modifiers
1269 const double thr = tokens.at(1).toDouble();
1271 // Only restart the conversion if the threshold was updated.
1272 // We're starting a delayed conversion because the user may still be
1273 // typing and the UI would lag if we kept on restarting it immediately
1274 if (base_->set_conversion_option("threshold_value", thr))
1275 base_->start_conversion(true);
1278 if (conv_type == SignalBase::A2LConversionBySchmittTrigger && use_custom_thr) {
1279 // Not one of the preset values, try to parse the combo box text
1280 // Note: Regex loosely based on
1281 // https://txt2re.com/index-c++.php3?s=0.1V/0.2V&2&14&-22&3&15
1282 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1283 QString re2 = "([a-zA-Z]*)"; // SI unit
1284 QString re3 = "\\/"; // Forward slash, not captured
1285 QString re4 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1286 QString re5 = "([a-zA-Z]*)"; // SI unit
1287 QRegExp regex(re1 + re2 + re3 + re4 + re5);
1289 const QString text = conv_threshold_cb_->currentText();
1290 if (!regex.exactMatch(text))
1291 return; // String doesn't match the regex
1293 QStringList tokens = regex.capturedTexts();
1295 // For now, we simply assume that the unit is volt without modifiers
1296 const double low_thr = tokens.at(1).toDouble();
1297 const double high_thr = tokens.at(3).toDouble();
1299 // Only restart the conversion if one of the options was updated.
1300 // We're starting a delayed conversion because the user may still be
1301 // typing and the UI would lag if we kept on restarting it immediately
1302 bool o1 = base_->set_conversion_option("threshold_value_low", low_thr);
1303 bool o2 = base_->set_conversion_option("threshold_value_high", high_thr);
1305 base_->start_conversion(true); // Start delayed conversion
1308 base_->set_conversion_preset((SignalBase::ConversionPreset)index);
1310 // Immediately start the conversion if we're not using custom values
1311 // (i.e. we're using one of the presets)
1312 if (!use_custom_thr)
1313 base_->start_conversion();
1316 void AnalogSignal::on_delayed_conversion_starter()
1318 base_->start_conversion();
1321 void AnalogSignal::on_display_type_changed(int index)
1323 display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
1326 owner_->row_item_appearance_changed(false, true);
1329 } // namespace trace
1330 } // namespace views