#include "analogsignal.h"
#include "pv/data/analog.h"
#include "pv/data/analogsnapshot.h"
+#include "pv/view/view.h"
-using namespace boost;
-using namespace std;
+using boost::shared_ptr;
+using std::max;
+using std::min;
+using std::deque;
namespace pv {
namespace view {
-AnalogSignal::AnalogSignal(QString name, shared_ptr<data::Analog> data) :
- Signal(name),
- _data(data)
+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(shared_ptr<pv::DevInst> dev_inst,
+ const sr_probe *const probe, shared_ptr<data::Analog> data) :
+ Signal(dev_inst, probe),
+ _data(data),
+ _scale(1.0f)
{
- _colour = Qt::blue;
+ _colour = SignalColours[probe->index % countof(SignalColours)];
}
-void AnalogSignal::paint(QPainter &p, int y, int left, int right, double scale,
- double offset)
+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;
+}
+
+void AnalogSignal::paint_back(QPainter &p, int left, int right)
+{
+ if (_probe->enabled)
+ paint_axis(p, get_y(), left, right);
+}
+
+void AnalogSignal::paint_mid(QPainter &p, int left, int right)
{
- assert(scale > 0);
assert(_data);
assert(right >= left);
- paint_axis(p, y, left, right);
+ assert(_view);
+ const int y = _v_offset - _view->v_offset();
+
+ const double scale = _view->scale();
+ assert(scale > 0);
+
+ const double offset = _view->offset();
+
+ if (!_probe->enabled)
+ return;
const deque< shared_ptr<pv::data::AnalogSnapshot> > &snapshots =
_data->get_snapshots();
snapshots.front();
const double pixels_offset = offset / scale;
- const double samplerate = _data->get_samplerate();
+ const double samplerate = _data->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 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 int64_t sample_count = end_sample - start_sample;
- const float* samples = snapshot->get_samples(
- start_sample, end_sample);
+ if (samples_per_pixel < EnvelopeThreshold)
+ paint_trace(p, snapshot, y, left,
+ start_sample, end_sample,
+ pixels_offset, samples_per_pixel);
+ else
+ paint_envelope(p, snapshot, y, left,
+ start_sample, end_sample,
+ pixels_offset, samples_per_pixel);
+}
+
+void AnalogSignal::paint_trace(QPainter &p,
+ const shared_ptr<pv::data::AnalogSnapshot> &snapshot,
+ 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 = snapshot->get_samples(start, end);
assert(samples);
+ 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 - start_sample] + y);
+ 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::AnalogSnapshot> &snapshot,
+ int y, int left, const int64_t start, const int64_t end,
+ const double pixels_offset, const double samples_per_pixel)
+{
+ using pv::data::AnalogSnapshot;
+
+ AnalogSnapshot::EnvelopeSection e;
+ snapshot->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 AnalogSnapshot::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
projects / pulseview.git / blobdiff