X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fanalogsignal.cpp;h=2597a8f38445959051cadbdeae26ed7eb9f3ef8f;hp=fb5eba6103ad6ba9f3f22936d86fe831d07a5d66;hb=35365c66bf6166c5607f1180016528d996a45b66;hpb=1b1ec774978b65209ce2b454cbf81da499b797d2 diff --git a/pv/view/analogsignal.cpp b/pv/view/analogsignal.cpp index fb5eba61..2597a8f3 100644 --- a/pv/view/analogsignal.cpp +++ b/pv/view/analogsignal.cpp @@ -20,76 +20,222 @@ #include -#include +#include +#include +#include +#include -#include "analogsignal.h" -#include "pv/data/analog.h" -#include "pv/data/analogsnapshot.h" +#include "analogsignal.hpp" +#include "pv/data/analog.hpp" +#include "pv/data/analogsegment.hpp" +#include "pv/view/view.hpp" -using namespace boost; -using namespace std; +#include + +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 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, + shared_ptr data) : + Signal(session, channel), + data_(data), + scale_index_(0), + scale_index_drag_offset_(0) +{ + set_colour(SignalColours[channel_->index() % countof(SignalColours)]); +} + +AnalogSignal::~AnalogSignal() +{ +} + +shared_ptr AnalogSignal::data() const +{ + return data_; +} + +shared_ptr AnalogSignal::analog_data() const +{ + return data_; +} + +std::pair AnalogSignal::v_extents() const +{ + const int h = NominalHeight / 2; + return make_pair(-h, h); +} + +int AnalogSignal::scale_handle_offset() const +{ + return ((scale_index_drag_offset_ - scale_index_) * + NominalHeight / 4) - NominalHeight / 2; +} + +void AnalogSignal::scale_handle_dragged(int offset) +{ + scale_index_ = scale_index_drag_offset_ - + (offset + NominalHeight / 2) / (NominalHeight / 4); +} + +void AnalogSignal::scale_handle_drag_release() +{ + scale_index_drag_offset_ = scale_index_; +} + +void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp) { - _colour = Qt::blue; + if (channel_->enabled()) { + Trace::paint_back(p, pp); + paint_axis(p, pp, get_visual_y()); + } } -void AnalogSignal::paint(QPainter &p, const QRect &rect, double scale, - double offset) +void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp) { - assert(scale > 0); - assert(_data); + assert(data_); + assert(owner_); - const deque< shared_ptr > &snapshots = - _data->get_snapshots(); - if (snapshots.empty()) + const int y = get_visual_y(); + + if (!channel_->enabled()) return; - const shared_ptr &snapshot = - snapshots.front(); + const deque< shared_ptr > &segments = + data_->analog_segments(); + if (segments.empty()) + 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 = 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 * rect.width(); + const shared_ptr &segment = + segments.front(); - const int64_t start_sample = min(max((int64_t)floor(start), + const double pixels_offset = pp.pixels_offset(); + const double samplerate = max(1.0, segment->samplerate()); + const pv::util::Timestamp& start_time = segment->start_time(); + const int64_t last_sample = segment->get_sample_count() - 1; + const double samples_per_pixel = samplerate * pp.scale(); + const pv::util::Timestamp start = samplerate * (pp.offset() - start_time); + const pv::util::Timestamp end = start + samples_per_pixel * pp.width(); + + const int64_t start_sample = min(max(floor(start).convert_to(), (int64_t)0), last_sample); - const int64_t end_sample = min(max((int64_t)ceil(end), + const int64_t end_sample = min(max((ceil(end) + 1).convert_to(), (int64_t)0), last_sample); - const int y_offset = rect.center().y(); + if (samples_per_pixel < EnvelopeThreshold) + paint_trace(p, segment, y, pp.left(), + start_sample, end_sample, + pixels_offset, samples_per_pixel); + else + paint_envelope(p, segment, y, pp.left(), + start_sample, end_sample, + pixels_offset, samples_per_pixel); +} - const float* samples = snapshot->get_samples(); +void AnalogSignal::paint_trace(QPainter &p, + const shared_ptr &segment, + int y, int left, const int64_t start, const int64_t end, + const double pixels_offset, const double samples_per_pixel) +{ + const float scale = this->scale(); + const int64_t sample_count = end - start; + + const float *const samples = segment->get_samples(start, end); assert(samples); - QPointF *points = new QPointF[end_sample - start_sample]; + 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) + rect.left(); - const float y = samples[sample] + y_offset; - *point++ = QPointF(x, y); + pixels_offset) + left; + *point++ = QPointF(x, + y - samples[sample - start] * scale); } - p.drawPoints(points, point - points); + p.drawPolyline(points, point - points); + delete[] samples; delete[] points; } -int AnalogSignal::get_nominal_offset(const QRect &rect) const +void AnalogSignal::paint_envelope(QPainter &p, + const shared_ptr &segment, + int y, int left, const int64_t start, const int64_t end, + const double pixels_offset, const double samples_per_pixel) +{ + using pv::data::AnalogSegment; + + const float scale = this->scale(); + + AnalogSegment::EnvelopeSection e; + segment->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 AnalogSegment::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; +} + +float AnalogSignal::scale() const { - return rect.center().y(); + const float seq[] = {1.0f, 2.0f, 5.0f}; + const int offset = std::numeric_limits::max() / (2 * countof(seq)); + const std::div_t d = std::div( + (int)(scale_index_ + countof(seq) * offset), + countof(seq)); + return powf(10.0f, d.quot - offset) * seq[d.rem]; } } // namespace view