+++ /dev/null
-/*
- * This file is part of the PulseView project.
- *
- * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <extdef.h>
-
-#include <math.h>
-
-#include "analogsignal.h"
-#include "pv/data/analog.h"
-#include "pv/data/analogsnapshot.h"
-#include "pv/view/view.h"
-
-using namespace boost;
-using namespace std;
-
-namespace pv {
-namespace view {
-
-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::SigSession &session, sr_probe *const probe,
- shared_ptr<data::Analog> data) :
- Signal(session, probe),
- _data(data),
- _scale(1.0f)
-{
- _colour = SignalColours[probe->index % countof(SignalColours)];
-}
-
-AnalogSignal::~AnalogSignal()
-{
-}
-
-boost::shared_ptr<pv::data::SignalData> AnalogSignal::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(_data);
- assert(right >= left);
-
- 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();
- if (snapshots.empty())
- return;
-
- const shared_ptr<pv::data::AnalogSnapshot> &snapshot =
- snapshots.front();
-
- const double pixels_offset = offset / scale;
- 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 double start = samplerate * (offset - start_time);
- const double end = start + samples_per_pixel * (right - left);
-
- 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, 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 != 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 namespace Qt;
- 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(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