#include <extdef.h>
-#include <math.h>
+#include <cassert>
+#include <cmath>
-#include "analogsignal.h"
-#include "pv/data/analog.h"
-#include "pv/data/analogsnapshot.h"
+#include "analogsignal.hpp"
+#include "pv/data/analog.hpp"
+#include "pv/data/analogsegment.hpp"
+#include "pv/view/view.hpp"
-using namespace boost;
-using namespace std;
+#include <libsigrokcxx/libsigrokcxx.hpp>
+
+using std::max;
+using std::make_pair;
+using std::min;
+using std::shared_ptr;
+using std::deque;
+
+using sigrok::Channel;
namespace pv {
namespace view {
-AnalogSignal::AnalogSignal(QString name, shared_ptr<data::Analog> data) :
- Signal(name),
- _data(data)
+const int AnalogSignal::NominalHeight = 80;
+
+const QColor AnalogSignal::SignalColours[4] = {
+ QColor(0xC4, 0xA0, 0x00), // Yellow
+ QColor(0x87, 0x20, 0x7A), // Magenta
+ QColor(0x20, 0x4A, 0x87), // Blue
+ QColor(0x4E, 0x9A, 0x06) // Green
+};
+
+const float AnalogSignal::EnvelopeThreshold = 256.0f;
+
+AnalogSignal::AnalogSignal(
+ pv::Session &session,
+ shared_ptr<Channel> channel,
+ shared_ptr<data::Analog> data) :
+ Signal(session, channel),
+ data_(data),
+ scale_(1.0f)
+{
+ colour_ = SignalColours[channel_->index() % countof(SignalColours)];
+}
+
+AnalogSignal::~AnalogSignal()
+{
+}
+
+shared_ptr<pv::data::SignalData> AnalogSignal::data() const
+{
+ return data_;
+}
+
+shared_ptr<pv::data::Analog> AnalogSignal::analog_data() const
+{
+ return data_;
+}
+
+void AnalogSignal::set_scale(float scale)
+{
+ scale_ = scale;
+}
+
+std::pair<int, int> AnalogSignal::v_extents() const
+{
+ return make_pair(-NominalHeight / 2, NominalHeight / 2);
+}
+
+void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
{
- _colour = Qt::blue;
+ if (channel_->enabled())
+ paint_axis(p, pp, get_visual_y());
}
-void AnalogSignal::paint(QPainter &p, int y, int left, int right, double scale,
- double offset)
+void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
{
- assert(scale > 0);
- assert(_data);
- assert(right >= left);
+ assert(data_);
+ assert(owner_);
- paint_axis(p, y, left, right);
+ const int y = get_visual_y();
- const deque< shared_ptr<pv::data::AnalogSnapshot> > &snapshots =
- _data->get_snapshots();
- if (snapshots.empty())
+ if (!channel_->enabled())
return;
- const shared_ptr<pv::data::AnalogSnapshot> &snapshot =
- snapshots.front();
+ const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
+ data_->analog_segments();
+ if (segments.empty())
+ return;
+
+ const shared_ptr<pv::data::AnalogSegment> &segment =
+ segments.front();
- const double pixels_offset = offset / scale;
- const double samplerate = _data->get_samplerate();
- const double start_time = _data->get_start_time();
- const int64_t last_sample = snapshot->get_sample_count() - 1;
- const double samples_per_pixel = samplerate * scale;
- const double start = samplerate * (offset - start_time);
- const double end = start + samples_per_pixel * (right - left);
+ const double pixels_offset = pp.pixels_offset();
+ const double samplerate = segment->samplerate();
+ const double start_time = segment->start_time();
+ const int64_t last_sample = segment->get_sample_count() - 1;
+ const double samples_per_pixel = samplerate * pp.scale();
+ const double start = samplerate * (pp.offset() - start_time);
+ const double end = start + samples_per_pixel * pp.width();
const int64_t start_sample = min(max((int64_t)floor(start),
(int64_t)0), last_sample);
- const int64_t end_sample = min(max((int64_t)ceil(end),
+ const int64_t end_sample = min(max((int64_t)ceil(end) + 1,
(int64_t)0), last_sample);
- const float* samples = snapshot->get_samples();
+ if (samples_per_pixel < EnvelopeThreshold)
+ paint_trace(p, segment, y, pp.left(),
+ start_sample, end_sample,
+ pixels_offset, samples_per_pixel);
+ else
+ paint_envelope(p, segment, y, pp.left(),
+ start_sample, end_sample,
+ pixels_offset, samples_per_pixel);
+}
+
+void AnalogSignal::paint_trace(QPainter &p,
+ const shared_ptr<pv::data::AnalogSegment> &segment,
+ int y, int left, const int64_t start, const int64_t end,
+ const double pixels_offset, const double samples_per_pixel)
+{
+ const int64_t sample_count = end - start;
+
+ const float *const samples = segment->get_samples(start, end);
assert(samples);
- QPointF *points = new QPointF[end_sample - start_sample];
+ p.setPen(colour_);
+
+ QPointF *points = new QPointF[sample_count];
QPointF *point = points;
- for (int64_t sample = start_sample;
- sample != end_sample; sample++) {
+ for (int64_t sample = start; sample != end; sample++) {
const float x = (sample / samples_per_pixel -
pixels_offset) + left;
- *point++ = QPointF(x, samples[sample] + y);
+ *point++ = QPointF(x,
+ y - samples[sample - start] * scale_);
}
- p.setPen(_colour);
- p.drawPoints(points, point - points);
+ p.drawPolyline(points, point - points);
+ delete[] samples;
delete[] points;
}
+void AnalogSignal::paint_envelope(QPainter &p,
+ const shared_ptr<pv::data::AnalogSegment> &segment,
+ int y, int left, const int64_t start, const int64_t end,
+ const double pixels_offset, const double samples_per_pixel)
+{
+ using pv::data::AnalogSegment;
+
+ AnalogSegment::EnvelopeSection e;
+ segment->get_envelope_section(e, start, end, samples_per_pixel);
+
+ if (e.length < 2)
+ return;
+
+ p.setPen(QPen(Qt::NoPen));
+ p.setBrush(colour_);
+
+ QRectF *const rects = new QRectF[e.length];
+ QRectF *rect = rects;
+
+ for(uint64_t sample = 0; sample < e.length-1; sample++) {
+ const float x = ((e.scale * sample + e.start) /
+ samples_per_pixel - pixels_offset) + left;
+ const AnalogSegment::EnvelopeSample *const s =
+ e.samples + sample;
+
+ // We overlap this sample with the next so that vertical
+ // gaps do not appear during steep rising or falling edges
+ const float b = y - max(s->max, (s+1)->min) * scale_;
+ const float t = y - min(s->min, (s+1)->max) * scale_;
+
+ float h = b - t;
+ if(h >= 0.0f && h <= 1.0f)
+ h = 1.0f;
+ if(h <= 0.0f && h >= -1.0f)
+ h = -1.0f;
+
+ *rect++ = QRectF(x, t, 1.0f, h);
+ }
+
+ p.drawRects(rects, e.length);
+
+ delete[] rects;
+ delete[] e.samples;
+}
+
} // namespace view
} // namespace pv