#include <extdef.h>
-#include <math.h>
+#include <cassert>
+#include <cmath>
-#include "analogsignal.h"
-#include "../analogdata.h"
-#include "../analogdatasnapshot.h"
+#include "analogsignal.hpp"
+#include "pv/data/analog.hpp"
+#include "pv/data/analogsnapshot.hpp"
+#include "pv/view/view.hpp"
-using namespace boost;
-using namespace std;
+#include <libsigrok/libsigrok.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<AnalogData> 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 = Qt::blue;
+ colour_ = SignalColours[channel_->index() % countof(SignalColours)];
}
-void AnalogSignal::paint(QPainter &p, const QRect &rect, double scale,
- double offset)
+AnalogSignal::~AnalogSignal()
{
}
-int AnalogSignal::get_nominal_offset(const QRect &rect) const
+shared_ptr<pv::data::SignalData> AnalogSignal::data() const
{
- return rect.bottom();
+ 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 RowItemPaintParams &pp)
+{
+ if (channel_->enabled())
+ paint_axis(p, pp, get_visual_y());
+}
+
+void AnalogSignal::paint_mid(QPainter &p, const RowItemPaintParams &pp)
+{
+ assert(data_);
+ assert(owner_);
+
+ const int y = get_visual_y();
+
+ if (!channel_->enabled())
+ return;
+
+ const deque< shared_ptr<pv::data::AnalogSnapshot> > &snapshots =
+ data_->get_snapshots();
+ if (snapshots.empty())
+ return;
+
+ const shared_ptr<pv::data::AnalogSnapshot> &snapshot =
+ snapshots.front();
+
+ const double pixels_offset = pp.pixels_offset();
+ 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 * 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) + 1,
+ (int64_t)0), last_sample);
+
+ if (samples_per_pixel < EnvelopeThreshold)
+ paint_trace(p, snapshot, y, pp.left(),
+ start_sample, end_sample,
+ pixels_offset, samples_per_pixel);
+ else
+ paint_envelope(p, snapshot, y, pp.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 != end; sample++) {
+ const float x = (sample / samples_per_pixel -
+ pixels_offset) + left;
+ *point++ = QPointF(x,
+ y - samples[sample - start] * scale_);
+ }
+
+ 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
projects / pulseview.git / blobdiff