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/*
* This file is part of the DSLogic-gui project.
* DSLogic-gui is based on PulseView.
*
* Copyright (C) 2013 DreamSourceLab <dreamsourcelab@dreamsourcelab.com>
*
* 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 "dsosignal.h"
#include "pv/data/dso.h"
#include "pv/data/dsosnapshot.h"
using namespace boost;
using namespace std;
namespace pv {
namespace view {
const QColor DsoSignal::SignalColours[4] = {
QColor(238, 178, 17, 200), // dsYellow
QColor(0, 153, 37, 200), // dsGreen
QColor(213, 15, 37, 200), // dsRed
QColor(17, 133, 209, 200) // dsBlue
};
const float DsoSignal::EnvelopeThreshold = 256.0f;
DsoSignal::DsoSignal(QString name, boost::shared_ptr<data::Dso> data,
int probe_index, int order, uint64_t vdiv, uint64_t timebase, bool coupling, bool active) :
Signal(name, probe_index, DS_DSO, order),
_data(data)
{
_colour = SignalColours[probe_index % countof(SignalColours)];
_scale = _windowHeight * 1.0f / 256;
_vDial->set_value(vdiv);
_hDial->set_value(timebase);
_acCoupling = coupling;
_active = active;
}
DsoSignal::~DsoSignal()
{
}
void DsoSignal::set_data(boost::shared_ptr<data::Logic> _logic_data,
boost::shared_ptr<data::Dso> _dso_data,
boost::shared_ptr<pv::data::Analog> _analog_data,
boost::shared_ptr<data::Group> _group_data)
{
(void)_analog_data;
(void)_logic_data;
(void)_group_data;
assert(_dso_data);
_data = _dso_data;
}
void DsoSignal::set_scale(float scale)
{
_scale = scale;
}
void DsoSignal::paint(QPainter &p, int y, int left, int right, double scale,
double offset)
{
assert(scale > 0);
assert(_data);
assert(right >= left);
const deque< boost::shared_ptr<pv::data::DsoSnapshot> > &snapshots =
_data->get_snapshots();
if (snapshots.empty())
return;
_scale = _windowHeight * 1.0f / 256;
const boost::shared_ptr<pv::data::DsoSnapshot> &snapshot =
snapshots.front();
const uint16_t number_channels = snapshot->get_channel_num();
if ((unsigned int)get_index() >= number_channels)
return;
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 = max((int64_t)(snapshot->get_sample_count() - 1), (int64_t)0);
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, number_channels);
else
paint_envelope(p, snapshot, y, left,
start_sample, end_sample,
pixels_offset, samples_per_pixel);
}
void DsoSignal::paint_trace(QPainter &p,
const boost::shared_ptr<pv::data::DsoSnapshot> &snapshot,
int y, int left, const int64_t start, const int64_t end,
const double pixels_offset, const double samples_per_pixel, uint64_t num_channels)
{
const int64_t sample_count = end - start;
if (sample_count > 0) {
const uint8_t *const samples = snapshot->get_samples(start, end, get_index());
assert(samples);
p.setPen(_colour);
//p.setPen(QPen(_colour, 3, Qt::SolidLine));
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;
uint8_t offset = samples[(sample - start)*num_channels];
*point++ = QPointF(x,
y - offset * _scale);
}
p.drawPolyline(points, point - points);
//delete[] samples;
delete[] points;
}
}
void DsoSignal::paint_envelope(QPainter &p,
const boost::shared_ptr<pv::data::DsoSnapshot> &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::DsoSnapshot;
DsoSnapshot::EnvelopeSection e;
snapshot->get_envelope_section(e, start, end, samples_per_pixel, get_index());
if (e.length < 2)
return;
p.setPen(QPen(NoPen));
//p.setPen(QPen(_colour, 2, Qt::SolidLine));
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 DsoSnapshot::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;
}
const std::vector< std::pair<uint64_t, bool> > DsoSignal::cur_edges() const
{
}
void DsoSignal::set_decoder(pv::decoder::Decoder *decoder)
{
(void)decoder;
}
decoder::Decoder *DsoSignal::get_decoder()
{
return NULL;
}
void DsoSignal::del_decoder()
{
}
} // namespace view
} // namespace pv
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