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Diffstat (limited to 'DSLogic-gui/pv/view/dsosignal.cpp')
| -rw-r--r-- | DSLogic-gui/pv/view/dsosignal.cpp | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/DSLogic-gui/pv/view/dsosignal.cpp b/DSLogic-gui/pv/view/dsosignal.cpp new file mode 100644 index 0000000..d11108b --- /dev/null +++ b/DSLogic-gui/pv/view/dsosignal.cpp @@ -0,0 +1,224 @@ +/* + * 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 |