[pulseview.git] / pv / data / signalbase.cpp

/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
 * Copyright (C) 2016 Soeren Apel <soeren@apelpie.net>
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include "analog.hpp"
#include "analogsegment.hpp"
#include "decode/row.hpp"
#include "logic.hpp"
#include "logicsegment.hpp"
#include "signalbase.hpp"
#include "signaldata.hpp"

#include <pv/binding/decoder.hpp>
#include <pv/session.hpp>

using std::dynamic_pointer_cast;
using std::make_shared;
using std::shared_ptr;
using std::tie;
using std::unique_lock;

namespace pv {
namespace data {

const int SignalBase::ColourBGAlpha = 8 * 256 / 100;
const uint64_t SignalBase::ConversionBlockSize = 4096;
const uint32_t SignalBase::ConversionDelay = 1000;  // 1 second

SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) :
	channel_(channel),
	channel_type_(channel_type),
	conversion_type_(NoConversion),
	min_value_(0),
	max_value_(0)
{
	if (channel_)
		internal_name_ = QString::fromStdString(channel_->name());

	connect(&delayed_conversion_starter_, SIGNAL(timeout()),
		this, SLOT(on_delayed_conversion_start()));
	delayed_conversion_starter_.setSingleShot(true);
	delayed_conversion_starter_.setInterval(ConversionDelay);
}

SignalBase::~SignalBase()
{
	stop_conversion();
}

shared_ptr<sigrok::Channel> SignalBase::channel() const
{
	return channel_;
}

QString SignalBase::name() const
{
	return (channel_) ? QString::fromStdString(channel_->name()) : name_;
}

QString SignalBase::internal_name() const
{
	return internal_name_;
}

void SignalBase::set_name(QString name)
{
	if (channel_)
		channel_->set_name(name.toUtf8().constData());

	name_ = name;

	name_changed(name);
}

bool SignalBase::enabled() const
{
	return (channel_) ? channel_->enabled() : true;
}

void SignalBase::set_enabled(bool value)
{
	if (channel_) {
		channel_->set_enabled(value);
		enabled_changed(value);
	}
}

SignalBase::ChannelType SignalBase::type() const
{
	return channel_type_;
}

unsigned int SignalBase::index() const
{
	return (channel_) ? channel_->index() : 0;
}

unsigned int SignalBase::logic_bit_index() const
{
	if (channel_type_ == LogicChannel)
		return channel_->index();
	else
		return 0;
}

QColor SignalBase::colour() const
{
	return colour_;
}

void SignalBase::set_colour(QColor colour)
{
	colour_ = colour;

	bgcolour_ = colour;
	bgcolour_.setAlpha(ColourBGAlpha);

	colour_changed(colour);
}

QColor SignalBase::bgcolour() const
{
	return bgcolour_;
}

void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
{
	if (data_) {
		disconnect(data.get(), SIGNAL(samples_cleared()),
			this, SLOT(on_samples_cleared()));
		disconnect(data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
			this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));

		if (channel_type_ == AnalogChannel) {
			shared_ptr<Analog> analog = analog_data();
			assert(analog);

			disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
				this, SLOT(on_min_max_changed(float, float)));
		}
	}

	data_ = data;

	if (data_) {
		connect(data.get(), SIGNAL(samples_cleared()),
			this, SLOT(on_samples_cleared()));
		connect(data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
			this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));

		if (channel_type_ == AnalogChannel) {
			shared_ptr<Analog> analog = analog_data();
			assert(analog);

			connect(analog.get(), SIGNAL(min_max_changed(float, float)),
				this, SLOT(on_min_max_changed(float, float)));
		}
	}
}

shared_ptr<data::Analog> SignalBase::analog_data() const
{
	shared_ptr<Analog> result = nullptr;

	if (channel_type_ == AnalogChannel)
		result = dynamic_pointer_cast<Analog>(data_);

	return result;
}

shared_ptr<data::Logic> SignalBase::logic_data() const
{
	shared_ptr<Logic> result = nullptr;

	if (channel_type_ == LogicChannel)
		result = dynamic_pointer_cast<Logic>(data_);

	if (((conversion_type_ == A2LConversionByThreshold) ||
		(conversion_type_ == A2LConversionBySchmittTrigger)))
		result = dynamic_pointer_cast<Logic>(converted_data_);

	return result;
}

SignalBase::ConversionType SignalBase::get_conversion_type() const
{
	return conversion_type_;
}

void SignalBase::set_conversion_type(ConversionType t)
{
	if (conversion_type_ != NoConversion) {
		stop_conversion();

		// Discard converted data
		converted_data_.reset();
		samples_cleared();
	}

	conversion_type_ = t;

	// Re-create an empty container
	// so that the signal is recognized as providing logic data
	// and thus can be assigned to a decoder
	if (conversion_is_a2l())
		if (!converted_data_)
			converted_data_ = make_shared<Logic>(1);  // Contains only one channel

	start_conversion();

	conversion_type_changed(t);
}

map<QString, QVariant> SignalBase::get_conversion_options() const
{
	return conversion_options_;
}

bool SignalBase::set_conversion_option(QString key, QVariant value)
{
	QVariant old_value;

	auto key_iter = conversion_options_.find(key);
	if (key_iter != conversion_options_.end())
		old_value = key_iter->second;

	conversion_options_[key] = value;

	return (value != old_value);
}

vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
	const bool always_custom) const
{
	vector<double> result;
	ConversionType conv_type = t;
	ConversionPreset preset;

	// Use currently active conversion if no conversion type was supplied
	if (conv_type == NoConversion)
		conv_type = conversion_type_;

	if (always_custom)
		preset = NoPreset;
	else
		preset = get_current_conversion_preset();

	if (conv_type == A2LConversionByThreshold) {
		double thr = 0;

		if (preset == NoPreset) {
			auto thr_iter = conversion_options_.find("threshold_value");
			if (thr_iter != conversion_options_.end())
				thr = (thr_iter->second).toDouble();
		}

		if (preset == DynamicPreset)
			thr = (min_value_ + max_value_) * 0.5;  // middle between min and max

		if ((int)preset == 1) thr = 0.9;
		if ((int)preset == 2) thr = 1.8;
		if ((int)preset == 3) thr = 2.5;
		if ((int)preset == 4) thr = 1.5;

		result.push_back(thr);
	}

	if (conv_type == A2LConversionBySchmittTrigger) {
		double thr_lo = 0, thr_hi = 0;

		if (preset == NoPreset) {
			auto thr_lo_iter = conversion_options_.find("threshold_value_low");
			if (thr_lo_iter != conversion_options_.end())
				thr_lo = (thr_lo_iter->second).toDouble();

			auto thr_hi_iter = conversion_options_.find("threshold_value_high");
			if (thr_hi_iter != conversion_options_.end())
				thr_hi = (thr_hi_iter->second).toDouble();
		}

		if (preset == DynamicPreset) {
			const double amplitude = max_value_ - min_value_;
			const double center = min_value_ + (amplitude / 2);
			thr_lo = center - (amplitude * 0.15);  // 15% margin
			thr_hi = center + (amplitude * 0.15);  // 15% margin
		}

		if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
		if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
		if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
		if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }

		result.push_back(thr_lo);
		result.push_back(thr_hi);
	}

	return result;
}

vector< pair<QString, int> > SignalBase::get_conversion_presets() const
{
	vector< pair<QString, int> > presets;

	if (conversion_type_ == A2LConversionByThreshold) {
		// Source: http://www.interfacebus.com/voltage_threshold.html
		presets.emplace_back(tr("Signal average"), 0);
		presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
		presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
		presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
		presets.emplace_back(tr("1.5V (for TTL)"), 4);
	}

	if (conversion_type_ == A2LConversionBySchmittTrigger) {
		// Source: http://www.interfacebus.com/voltage_threshold.html
		presets.emplace_back(tr("Signal average +/- 15%"), 0);
		presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
		presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
		presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
		presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
	}

	return presets;
}

SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
{
	auto preset = conversion_options_.find("preset");
	if (preset != conversion_options_.end())
		return (ConversionPreset)((preset->second).toInt());

	return DynamicPreset;
}

void SignalBase::set_conversion_preset(ConversionPreset id)
{
	conversion_options_["preset"] = (int)id;
}

#ifdef ENABLE_DECODE
bool SignalBase::is_decode_signal() const
{
	return (channel_type_ == DecodeChannel);
}
#endif

void SignalBase::save_settings(QSettings &settings) const
{
	settings.setValue("name", name());
	settings.setValue("enabled", enabled());
	settings.setValue("colour", colour());
	settings.setValue("conversion_type", (int)conversion_type_);

	settings.setValue("conv_options", (int)(conversion_options_.size()));
	int i = 0;
	for (auto kvp : conversion_options_) {
		settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
		settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
		i++;
	}
}

void SignalBase::restore_settings(QSettings &settings)
{
	set_name(settings.value("name").toString());
	set_enabled(settings.value("enabled").toBool());
	set_colour(settings.value("colour").value<QColor>());
	set_conversion_type((ConversionType)settings.value("conversion_type").toInt());

	int conv_options = settings.value("conv_options").toInt();

	if (conv_options)
		for (int i = 0; i < conv_options; i++) {
			QString key = settings.value(QString("conv_option%1_key").arg(i)).toString();
			QVariant value = settings.value(QString("conv_option%1_value").arg(i));
			conversion_options_[key] = value;
		}
}

bool SignalBase::conversion_is_a2l() const
{
	return ((channel_type_ == AnalogChannel) &&
		((conversion_type_ == A2LConversionByThreshold) ||
		(conversion_type_ == A2LConversionBySchmittTrigger)));
}

void SignalBase::conversion_thread_proc(QObject* segment)
{
	// TODO Support for multiple segments is missing

	uint64_t start_sample, end_sample;
	start_sample = end_sample = 0;

	do {
		if (conversion_is_a2l()) {

			AnalogSegment *asegment = qobject_cast<AnalogSegment*>(segment);

			const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);

			// Create the initial logic data segment if needed
			if (logic_data->segments().size() == 0) {
				shared_ptr<LogicSegment> lsegment =
					make_shared<LogicSegment>(*logic_data.get(), 1, asegment->samplerate());
				logic_data->push_segment(lsegment);
			}

			LogicSegment *lsegment = dynamic_cast<LogicSegment*>(logic_data->segments().front().get());

			start_sample = lsegment->get_sample_count();
			end_sample = asegment->get_sample_count();

			if (end_sample > start_sample) {
				tie(min_value_, max_value_) = asegment->get_min_max();

				// Create sigrok::Analog instance
				float *asamples = new float[ConversionBlockSize];
				uint8_t *lsamples = new uint8_t[ConversionBlockSize];

				vector<shared_ptr<sigrok::Channel> > channels;
				channels.push_back(channel_);

				vector<const sigrok::QuantityFlag*> mq_flags;
				const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
				const sigrok::Unit * const unit = sigrok::Unit::VOLT;

				shared_ptr<sigrok::Packet> packet =
					Session::sr_context->create_analog_packet(channels,
					asamples, ConversionBlockSize, mq, unit, mq_flags);

				shared_ptr<sigrok::Analog> analog =
					dynamic_pointer_cast<sigrok::Analog>(packet->payload());

				// Convert
				uint64_t i = start_sample;

				if (conversion_type_ == A2LConversionByThreshold) {
					const double threshold = get_conversion_thresholds()[0];

					// Convert as many sample blocks as we can
					while ((end_sample - i) > ConversionBlockSize) {
						asegment->get_samples(i, i + ConversionBlockSize, asamples);

						shared_ptr<sigrok::Logic> logic =
							analog->get_logic_via_threshold(threshold, lsamples);

						lsegment->append_payload(logic->data_pointer(), logic->data_length());

						samples_added(lsegment, i, i + ConversionBlockSize);
						i += ConversionBlockSize;
					}

					// Re-create sigrok::Analog and convert remaining samples
					packet = Session::sr_context->create_analog_packet(channels,
						asamples, end_sample - i, mq, unit, mq_flags);

					analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());

					asegment->get_samples(i, end_sample, asamples);
					shared_ptr<sigrok::Logic> logic =
						analog->get_logic_via_threshold(threshold, lsamples);
					lsegment->append_payload(logic->data_pointer(), logic->data_length());
					samples_added(lsegment, i, end_sample);
				}

				if (conversion_type_ == A2LConversionBySchmittTrigger) {
					const vector<double> thresholds = get_conversion_thresholds();
					const double lo_thr = thresholds[0];
					const double hi_thr = thresholds[1];

					uint8_t state = 0;  // TODO Use value of logic sample n-1 instead of 0

					// Convert as many sample blocks as we can
					while ((end_sample - i) > ConversionBlockSize) {
						asegment->get_samples(i, i + ConversionBlockSize, asamples);

						shared_ptr<sigrok::Logic> logic =
							analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
								&state, lsamples);

						lsegment->append_payload(logic->data_pointer(), logic->data_length());

						samples_added(lsegment, i, i + ConversionBlockSize);
						i += ConversionBlockSize;
					}

					// Re-create sigrok::Analog and convert remaining samples
					packet = Session::sr_context->create_analog_packet(channels,
						asamples, end_sample - i, mq, unit, mq_flags);

					analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());

					asegment->get_samples(i, end_sample, asamples);
					shared_ptr<sigrok::Logic> logic =
						analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
							&state, lsamples);
					lsegment->append_payload(logic->data_pointer(), logic->data_length());
					samples_added(lsegment, i, end_sample);
				}

				// If acquisition is ongoing, start-/endsample may have changed
				end_sample = asegment->get_sample_count();

				delete[] lsamples;
				delete[] asamples;
			}
		}

		if (!conversion_interrupt_ && (start_sample == end_sample)) {
			unique_lock<mutex> input_lock(conversion_input_mutex_);
			conversion_input_cond_.wait(input_lock);
		}
	} while (!conversion_interrupt_);
}

void SignalBase::start_conversion(bool delayed_start)
{
	if (delayed_start) {
		delayed_conversion_starter_.start();
		return;
	}

	stop_conversion();

	if (converted_data_)
		converted_data_->clear();

	if (conversion_is_a2l()) {
		shared_ptr<Analog> analog_data = dynamic_pointer_cast<Analog>(data_);

		if (analog_data->analog_segments().size() > 0) {
			// TODO Support for multiple segments is missing
			AnalogSegment *asegment = analog_data->analog_segments().front().get();

			conversion_interrupt_ = false;
			conversion_thread_ = std::thread(
				&SignalBase::conversion_thread_proc, this, asegment);
		}
	}
}

void SignalBase::stop_conversion()
{
	// Stop conversion so we can restart it from the beginning
	conversion_interrupt_ = true;
	conversion_input_cond_.notify_one();
	if (conversion_thread_.joinable())
		conversion_thread_.join();
}

void SignalBase::on_samples_cleared()
{
	if (converted_data_)
		converted_data_->clear();

	samples_cleared();
}

void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample,
	uint64_t end_sample)
{
	if (conversion_type_ != NoConversion) {
		if (conversion_thread_.joinable()) {
			// Notify the conversion thread since it's running
			conversion_input_cond_.notify_one();
		} else {
			// Start the conversion thread unless the delay timer is running
			if (!delayed_conversion_starter_.isActive())
				start_conversion();
		}
	}

	samples_added(segment, start_sample, end_sample);
}

void SignalBase::on_min_max_changed(float min, float max)
{
	// Restart conversion if one is enabled and uses a calculated threshold
	if ((conversion_type_ != NoConversion) &&
		(get_current_conversion_preset() == DynamicPreset))
		start_conversion(true);

	min_max_changed(min, max);
}

void SignalBase::on_capture_state_changed(int state)
{
	if (state == Session::Running) {
		// Restart conversion if one is enabled
		if (conversion_type_ != NoConversion)
			start_conversion();
	}
}

void SignalBase::on_delayed_conversion_start()
{
	start_conversion();
}

} // namespace data
} // namespace pv
Commit	Line	Data
bf0edd2b SA	1	/*
	2	* This file is part of the PulseView project.
	3	*
	4	* Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
	5	* Copyright (C) 2016 Soeren Apel <soeren@apelpie.net>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
efdec55a	18	* along with this program; if not, see <http://www.gnu.org/licenses/>.
bf0edd2b SA	19	*/
bf0edd2b SA	20
cbd2a2de	21	#include "analog.hpp"
12ea3616	22	#include "analogsegment.hpp"
aca9aa83	23	#include "decode/row.hpp"
cbd2a2de	24	#include "logic.hpp"
12ea3616	25	#include "logicsegment.hpp"
bf0edd2b	26	#include "signalbase.hpp"
cbd2a2de	27	#include "signaldata.hpp"
bb7dd726 SA	28
bb7dd726 SA	29	#include <pv/binding/decoder.hpp>
aca9aa83	30	#include <pv/session.hpp>
bf0edd2b	31
cbd2a2de	32	using std::dynamic_pointer_cast;
12ea3616	33	using std::make_shared;
bf0edd2b	34	using std::shared_ptr;
12ea3616	35	using std::tie;
27a3f09b	36	using std::unique_lock;
bf0edd2b SA	37
	38	namespace pv {
	39	namespace data {
	40
c063290a	41	const int SignalBase::ColourBGAlpha = 8 * 256 / 100;
bcaf0334	42	const uint64_t SignalBase::ConversionBlockSize = 4096;
932bc246	43	const uint32_t SignalBase::ConversionDelay = 1000; // 1 second
bf0edd2b	44
472a80c5 SA	45	SignalBase::SignalBase(shared_ptr<sigrok::Channel> channel, ChannelType channel_type) :
472a80c5 SA	46	channel_(channel),
12ea3616	47	channel_type_(channel_type),
52c900ac SA	48	conversion_type_(NoConversion),
	49	min_value_(0),
	50	max_value_(0)
bf0edd2b	51	{
050b5a6c SA	52	if (channel_)
050b5a6c SA	53	internal_name_ = QString::fromStdString(channel_->name());
932bc246 SA	54
	55	connect(&delayed_conversion_starter_, SIGNAL(timeout()),
	56	this, SLOT(on_delayed_conversion_start()));
	57	delayed_conversion_starter_.setSingleShot(true);
	58	delayed_conversion_starter_.setInterval(ConversionDelay);
bf0edd2b SA	59	}
bf0edd2b SA	60
12ea3616 SA	61	SignalBase::~SignalBase()
12ea3616 SA	62	{
27a3f09b	63	stop_conversion();
12ea3616 SA	64	}
12ea3616 SA	65
bf0edd2b SA	66	shared_ptr<sigrok::Channel> SignalBase::channel() const
	67	{
	68	return channel_;
	69	}
	70
	71	QString SignalBase::name() const
	72	{
	73	return (channel_) ? QString::fromStdString(channel_->name()) : name_;
	74	}
	75
050b5a6c SA	76	QString SignalBase::internal_name() const
	77	{
	78	return internal_name_;
	79	}
	80
bf0edd2b SA	81	void SignalBase::set_name(QString name)
	82	{
	83	if (channel_)
	84	channel_->set_name(name.toUtf8().constData());
	85
	86	name_ = name;
	87
	88	name_changed(name);
	89	}
	90
	91	bool SignalBase::enabled() const
	92	{
	93	return (channel_) ? channel_->enabled() : true;
	94	}
	95
	96	void SignalBase::set_enabled(bool value)
	97	{
	98	if (channel_) {
	99	channel_->set_enabled(value);
	100	enabled_changed(value);
	101	}
	102	}
	103
472a80c5	104	SignalBase::ChannelType SignalBase::type() const
bf0edd2b	105	{
472a80c5	106	return channel_type_;
bf0edd2b SA	107	}
	108
	109	unsigned int SignalBase::index() const
	110	{
27a3f09b SA	111	return (channel_) ? channel_->index() : 0;
	112	}
	113
	114	unsigned int SignalBase::logic_bit_index() const
	115	{
	116	if (channel_type_ == LogicChannel)
	117	return channel_->index();
	118	else
	119	return 0;
bf0edd2b SA	120	}
	121
	122	QColor SignalBase::colour() const
	123	{
	124	return colour_;
	125	}
	126
	127	void SignalBase::set_colour(QColor colour)
	128	{
	129	colour_ = colour;
	130
	131	bgcolour_ = colour;
	132	bgcolour_.setAlpha(ColourBGAlpha);
	133
	134	colour_changed(colour);
	135	}
	136
	137	QColor SignalBase::bgcolour() const
	138	{
	139	return bgcolour_;
	140	}
	141
cbd2a2de SA	142	void SignalBase::set_data(shared_ptr<pv::data::SignalData> data)
cbd2a2de SA	143	{
8ce8ebb9 SA	144	if (data_) {
8ce8ebb9 SA	145	disconnect(data.get(), SIGNAL(samples_cleared()),
12ea3616	146	this, SLOT(on_samples_cleared()));
8ce8ebb9	147	disconnect(data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
12ea3616	148	this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));
8e15445c SA	149
	150	if (channel_type_ == AnalogChannel) {
	151	shared_ptr<Analog> analog = analog_data();
	152	assert(analog);
	153
	154	disconnect(analog.get(), SIGNAL(min_max_changed(float, float)),
	155	this, SLOT(on_min_max_changed(float, float)));
	156	}
12ea3616 SA	157	}
12ea3616 SA	158
cbd2a2de	159	data_ = data;
12ea3616	160
8ce8ebb9 SA	161	if (data_) {
8ce8ebb9 SA	162	connect(data.get(), SIGNAL(samples_cleared()),
12ea3616	163	this, SLOT(on_samples_cleared()));
8ce8ebb9	164	connect(data.get(), SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
12ea3616	165	this, SLOT(on_samples_added(QObject*, uint64_t, uint64_t)));
8e15445c SA	166
	167	if (channel_type_ == AnalogChannel) {
	168	shared_ptr<Analog> analog = analog_data();
	169	assert(analog);
	170
	171	connect(analog.get(), SIGNAL(min_max_changed(float, float)),
	172	this, SLOT(on_min_max_changed(float, float)));
	173	}
12ea3616	174	}
cbd2a2de SA	175	}
	176
	177	shared_ptr<data::Analog> SignalBase::analog_data() const
	178	{
12ea3616 SA	179	shared_ptr<Analog> result = nullptr;
12ea3616 SA	180
472a80c5	181	if (channel_type_ == AnalogChannel)
12ea3616 SA	182	result = dynamic_pointer_cast<Analog>(data_);
	183
	184	return result;
cbd2a2de SA	185	}
	186
	187	shared_ptr<data::Logic> SignalBase::logic_data() const
	188	{
12ea3616 SA	189	shared_ptr<Logic> result = nullptr;
12ea3616 SA	190
472a80c5	191	if (channel_type_ == LogicChannel)
12ea3616 SA	192	result = dynamic_pointer_cast<Logic>(data_);
12ea3616 SA	193
b9cdbe03	194	if (((conversion_type_ == A2LConversionByThreshold) \|\|
12ea3616 SA	195	(conversion_type_ == A2LConversionBySchmittTrigger)))
	196	result = dynamic_pointer_cast<Logic>(converted_data_);
	197
	198	return result;
	199	}
	200
06b6ce26 SA	201	SignalBase::ConversionType SignalBase::get_conversion_type() const
	202	{
	203	return conversion_type_;
	204	}
	205
12ea3616 SA	206	void SignalBase::set_conversion_type(ConversionType t)
	207	{
	208	if (conversion_type_ != NoConversion) {
27a3f09b	209	stop_conversion();
12ea3616 SA	210
	211	// Discard converted data
	212	converted_data_.reset();
1b56c646	213	samples_cleared();
12ea3616 SA	214	}
	215
	216	conversion_type_ = t;
	217
ccccb914 SA	218	// Re-create an empty container
	219	// so that the signal is recognized as providing logic data
	220	// and thus can be assigned to a decoder
	221	if (conversion_is_a2l())
	222	if (!converted_data_)
	223	converted_data_ = make_shared<Logic>(1); // Contains only one channel
	224
27a3f09b	225	start_conversion();
12ea3616 SA	226
12ea3616 SA	227	conversion_type_changed(t);
cbd2a2de SA	228	}
cbd2a2de SA	229
52c900ac SA	230	map<QString, QVariant> SignalBase::get_conversion_options() const
	231	{
	232	return conversion_options_;
	233	}
	234
	235	bool SignalBase::set_conversion_option(QString key, QVariant value)
	236	{
	237	QVariant old_value;
	238
	239	auto key_iter = conversion_options_.find(key);
	240	if (key_iter != conversion_options_.end())
	241	old_value = key_iter->second;
	242
	243	conversion_options_[key] = value;
	244
	245	return (value != old_value);
	246	}
	247
	248	vector<double> SignalBase::get_conversion_thresholds(const ConversionType t,
	249	const bool always_custom) const
	250	{
	251	vector<double> result;
	252	ConversionType conv_type = t;
f0f9c856	253	ConversionPreset preset;
52c900ac SA	254
	255	// Use currently active conversion if no conversion type was supplied
	256	if (conv_type == NoConversion)
	257	conv_type = conversion_type_;
	258
	259	if (always_custom)
f0f9c856	260	preset = NoPreset;
52c900ac SA	261	else
	262	preset = get_current_conversion_preset();
	263
b9cdbe03	264	if (conv_type == A2LConversionByThreshold) {
52c900ac SA	265	double thr = 0;
52c900ac SA	266
f0f9c856	267	if (preset == NoPreset) {
52c900ac SA	268	auto thr_iter = conversion_options_.find("threshold_value");
	269	if (thr_iter != conversion_options_.end())
	270	thr = (thr_iter->second).toDouble();
	271	}
	272
f0f9c856	273	if (preset == DynamicPreset)
52c900ac SA	274	thr = (min_value_ + max_value_) * 0.5; // middle between min and max
52c900ac SA	275
f0f9c856 SA	276	if ((int)preset == 1) thr = 0.9;
	277	if ((int)preset == 2) thr = 1.8;
	278	if ((int)preset == 3) thr = 2.5;
	279	if ((int)preset == 4) thr = 1.5;
52c900ac SA	280
	281	result.push_back(thr);
	282	}
	283
	284	if (conv_type == A2LConversionBySchmittTrigger) {
	285	double thr_lo = 0, thr_hi = 0;
	286
f0f9c856	287	if (preset == NoPreset) {
52c900ac SA	288	auto thr_lo_iter = conversion_options_.find("threshold_value_low");
	289	if (thr_lo_iter != conversion_options_.end())
	290	thr_lo = (thr_lo_iter->second).toDouble();
	291
	292	auto thr_hi_iter = conversion_options_.find("threshold_value_high");
	293	if (thr_hi_iter != conversion_options_.end())
	294	thr_hi = (thr_hi_iter->second).toDouble();
	295	}
	296
f0f9c856	297	if (preset == DynamicPreset) {
52c900ac SA	298	const double amplitude = max_value_ - min_value_;
	299	const double center = min_value_ + (amplitude / 2);
	300	thr_lo = center - (amplitude * 0.15); // 15% margin
	301	thr_hi = center + (amplitude * 0.15); // 15% margin
	302	}
	303
f0f9c856 SA	304	if ((int)preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
	305	if ((int)preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
	306	if ((int)preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
	307	if ((int)preset == 4) { thr_lo = 0.8; thr_hi = 2.0; }
52c900ac SA	308
	309	result.push_back(thr_lo);
	310	result.push_back(thr_hi);
	311	}
	312
	313	return result;
	314	}
	315
	316	vector< pair<QString, int> > SignalBase::get_conversion_presets() const
	317	{
	318	vector< pair<QString, int> > presets;
	319
b9cdbe03	320	if (conversion_type_ == A2LConversionByThreshold) {
52c900ac SA	321	// Source: http://www.interfacebus.com/voltage_threshold.html
	322	presets.emplace_back(tr("Signal average"), 0);
	323	presets.emplace_back(tr("0.9V (for 1.8V CMOS)"), 1);
	324	presets.emplace_back(tr("1.8V (for 3.3V CMOS)"), 2);
	325	presets.emplace_back(tr("2.5V (for 5.0V CMOS)"), 3);
	326	presets.emplace_back(tr("1.5V (for TTL)"), 4);
	327	}
	328
	329	if (conversion_type_ == A2LConversionBySchmittTrigger) {
	330	// Source: http://www.interfacebus.com/voltage_threshold.html
	331	presets.emplace_back(tr("Signal average +/- 15%"), 0);
	332	presets.emplace_back(tr("0.3V/1.2V (for 1.8V CMOS)"), 1);
	333	presets.emplace_back(tr("0.7V/2.5V (for 3.3V CMOS)"), 2);
	334	presets.emplace_back(tr("1.3V/3.7V (for 5.0V CMOS)"), 3);
	335	presets.emplace_back(tr("0.8V/2.0V (for TTL)"), 4);
	336	}
	337
	338	return presets;
	339	}
	340
f0f9c856	341	SignalBase::ConversionPreset SignalBase::get_current_conversion_preset() const
52c900ac SA	342	{
	343	auto preset = conversion_options_.find("preset");
	344	if (preset != conversion_options_.end())
f0f9c856	345	return (ConversionPreset)((preset->second).toInt());
52c900ac	346
753c8f08	347	return DynamicPreset;
52c900ac SA	348	}
52c900ac SA	349
f0f9c856	350	void SignalBase::set_conversion_preset(ConversionPreset id)
52c900ac	351	{
f0f9c856	352	conversion_options_["preset"] = (int)id;
52c900ac SA	353	}
52c900ac SA	354
bb7dd726 SA	355	#ifdef ENABLE_DECODE
	356	bool SignalBase::is_decode_signal() const
	357	{
47747218	358	return (channel_type_ == DecodeChannel);
bb7dd726 SA	359	}
bb7dd726 SA	360	#endif
cbd2a2de	361
6de38b17 SA	362	void SignalBase::save_settings(QSettings &settings) const
	363	{
	364	settings.setValue("name", name());
	365	settings.setValue("enabled", enabled());
	366	settings.setValue("colour", colour());
12ea3616	367	settings.setValue("conversion_type", (int)conversion_type_);
52c900ac SA	368
	369	settings.setValue("conv_options", (int)(conversion_options_.size()));
	370	int i = 0;
	371	for (auto kvp : conversion_options_) {
	372	settings.setValue(QString("conv_option%1_key").arg(i), kvp.first);
	373	settings.setValue(QString("conv_option%1_value").arg(i), kvp.second);
	374	i++;
	375	}
6de38b17 SA	376	}
	377
	378	void SignalBase::restore_settings(QSettings &settings)
	379	{
	380	set_name(settings.value("name").toString());
	381	set_enabled(settings.value("enabled").toBool());
	382	set_colour(settings.value("colour").value<QColor>());
12ea3616	383	set_conversion_type((ConversionType)settings.value("conversion_type").toInt());
52c900ac SA	384
	385	int conv_options = settings.value("conv_options").toInt();
	386
	387	if (conv_options)
	388	for (int i = 0; i < conv_options; i++) {
	389	QString key = settings.value(QString("conv_option%1_key").arg(i)).toString();
	390	QVariant value = settings.value(QString("conv_option%1_value").arg(i));
	391	conversion_options_[key] = value;
	392	}
12ea3616 SA	393	}
12ea3616 SA	394
ccccb914 SA	395	bool SignalBase::conversion_is_a2l() const
	396	{
	397	return ((channel_type_ == AnalogChannel) &&
b9cdbe03	398	((conversion_type_ == A2LConversionByThreshold) \|\|
ccccb914 SA	399	(conversion_type_ == A2LConversionBySchmittTrigger)));
	400	}
	401
27a3f09b	402	void SignalBase::conversion_thread_proc(QObject* segment)
12ea3616	403	{
12ea3616 SA	404	// TODO Support for multiple segments is missing
12ea3616 SA	405
27a3f09b SA	406	uint64_t start_sample, end_sample;
27a3f09b SA	407	start_sample = end_sample = 0;
12ea3616	408
27a3f09b	409	do {
ccccb914	410	if (conversion_is_a2l()) {
27a3f09b SA	411
	412	AnalogSegment asegment = qobject_cast<AnalogSegment>(segment);
	413
ccccb914	414	const shared_ptr<Logic> logic_data = dynamic_pointer_cast<Logic>(converted_data_);
27a3f09b SA	415
	416	// Create the initial logic data segment if needed
	417	if (logic_data->segments().size() == 0) {
	418	shared_ptr<LogicSegment> lsegment =
	419	make_shared<LogicSegment>(*logic_data.get(), 1, asegment->samplerate());
	420	logic_data->push_segment(lsegment);
	421	}
12ea3616	422
27a3f09b	423	LogicSegment lsegment = dynamic_cast<LogicSegment>(logic_data->segments().front().get());
12ea3616	424
12ea3616 SA	425	start_sample = lsegment->get_sample_count();
12ea3616 SA	426	end_sample = asegment->get_sample_count();
12ea3616	427
27a3f09b	428	if (end_sample > start_sample) {
52c900ac	429	tie(min_value_, max_value_) = asegment->get_min_max();
27a3f09b	430
419ec4e1 SA	431	// Create sigrok::Analog instance
	432	float *asamples = new float[ConversionBlockSize];
	433	uint8_t *lsamples = new uint8_t[ConversionBlockSize];
	434
	435	vector<shared_ptr<sigrok::Channel> > channels;
	436	channels.push_back(channel_);
	437
	438	vector<const sigrok::QuantityFlag*> mq_flags;
	439	const sigrok::Quantity * const mq = sigrok::Quantity::VOLTAGE;
	440	const sigrok::Unit * const unit = sigrok::Unit::VOLT;
	441
	442	shared_ptr<sigrok::Packet> packet =
	443	Session::sr_context->create_analog_packet(channels,
	444	asamples, ConversionBlockSize, mq, unit, mq_flags);
	445
	446	shared_ptr<sigrok::Analog> analog =
	447	dynamic_pointer_cast<sigrok::Analog>(packet->payload());
27a3f09b	448
419ec4e1	449	// Convert
27a3f09b SA	450	uint64_t i = start_sample;
27a3f09b SA	451
b9cdbe03	452	if (conversion_type_ == A2LConversionByThreshold) {
52c900ac	453	const double threshold = get_conversion_thresholds()[0];
27a3f09b SA	454
	455	// Convert as many sample blocks as we can
	456	while ((end_sample - i) > ConversionBlockSize) {
b82243f7	457	asegment->get_samples(i, i + ConversionBlockSize, asamples);
419ec4e1 SA	458
	459	shared_ptr<sigrok::Logic> logic =
	460	analog->get_logic_via_threshold(threshold, lsamples);
	461
	462	lsegment->append_payload(logic->data_pointer(), logic->data_length());
	463
27a3f09b SA	464	samples_added(lsegment, i, i + ConversionBlockSize);
27a3f09b SA	465	i += ConversionBlockSize;
27a3f09b SA	466	}
27a3f09b SA	467
419ec4e1 SA	468	// Re-create sigrok::Analog and convert remaining samples
	469	packet = Session::sr_context->create_analog_packet(channels,
	470	asamples, end_sample - i, mq, unit, mq_flags);
	471
	472	analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
	473
b82243f7	474	asegment->get_samples(i, end_sample, asamples);
419ec4e1 SA	475	shared_ptr<sigrok::Logic> logic =
	476	analog->get_logic_via_threshold(threshold, lsamples);
	477	lsegment->append_payload(logic->data_pointer(), logic->data_length());
27a3f09b	478	samples_added(lsegment, i, end_sample);
27a3f09b SA	479	}
	480
	481	if (conversion_type_ == A2LConversionBySchmittTrigger) {
52c900ac SA	482	const vector<double> thresholds = get_conversion_thresholds();
	483	const double lo_thr = thresholds[0];
	484	const double hi_thr = thresholds[1];
	485
27a3f09b SA	486	uint8_t state = 0; // TODO Use value of logic sample n-1 instead of 0
	487
	488	// Convert as many sample blocks as we can
	489	while ((end_sample - i) > ConversionBlockSize) {
b82243f7	490	asegment->get_samples(i, i + ConversionBlockSize, asamples);
419ec4e1 SA	491
	492	shared_ptr<sigrok::Logic> logic =
	493	analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
	494	&state, lsamples);
	495
	496	lsegment->append_payload(logic->data_pointer(), logic->data_length());
	497
27a3f09b SA	498	samples_added(lsegment, i, i + ConversionBlockSize);
27a3f09b SA	499	i += ConversionBlockSize;
27a3f09b SA	500	}
27a3f09b SA	501
419ec4e1 SA	502	// Re-create sigrok::Analog and convert remaining samples
	503	packet = Session::sr_context->create_analog_packet(channels,
	504	asamples, end_sample - i, mq, unit, mq_flags);
	505
	506	analog = dynamic_pointer_cast<sigrok::Analog>(packet->payload());
	507
b82243f7	508	asegment->get_samples(i, end_sample, asamples);
419ec4e1 SA	509	shared_ptr<sigrok::Logic> logic =
	510	analog->get_logic_via_schmitt_trigger(lo_thr, hi_thr,
	511	&state, lsamples);
	512	lsegment->append_payload(logic->data_pointer(), logic->data_length());
27a3f09b	513	samples_added(lsegment, i, end_sample);
27a3f09b SA	514	}
	515
	516	// If acquisition is ongoing, start-/endsample may have changed
	517	end_sample = asegment->get_sample_count();
b82243f7	518
419ec4e1	519	delete[] lsamples;
b82243f7	520	delete[] asamples;
12ea3616	521	}
27a3f09b	522	}
12ea3616	523
27a3f09b SA	524	if (!conversion_interrupt_ && (start_sample == end_sample)) {
	525	unique_lock<mutex> input_lock(conversion_input_mutex_);
	526	conversion_input_cond_.wait(input_lock);
12ea3616	527	}
27a3f09b SA	528	} while (!conversion_interrupt_);
27a3f09b SA	529	}
12ea3616	530
932bc246	531	void SignalBase::start_conversion(bool delayed_start)
27a3f09b	532	{
932bc246 SA	533	if (delayed_start) {
	534	delayed_conversion_starter_.start();
	535	return;
	536	}
	537
27a3f09b SA	538	stop_conversion();
27a3f09b SA	539
52c900ac SA	540	if (converted_data_)
	541	converted_data_->clear();
	542
ccccb914	543	if (conversion_is_a2l()) {
27a3f09b	544	shared_ptr<Analog> analog_data = dynamic_pointer_cast<Analog>(data_);
12ea3616	545
27a3f09b SA	546	if (analog_data->analog_segments().size() > 0) {
	547	// TODO Support for multiple segments is missing
	548	AnalogSegment *asegment = analog_data->analog_segments().front().get();
eae3bbbb	549
27a3f09b SA	550	conversion_interrupt_ = false;
	551	conversion_thread_ = std::thread(
	552	&SignalBase::conversion_thread_proc, this, asegment);
12ea3616 SA	553	}
	554	}
	555	}
	556
27a3f09b SA	557	void SignalBase::stop_conversion()
	558	{
	559	// Stop conversion so we can restart it from the beginning
	560	conversion_interrupt_ = true;
	561	conversion_input_cond_.notify_one();
	562	if (conversion_thread_.joinable())
	563	conversion_thread_.join();
	564	}
	565
12ea3616 SA	566	void SignalBase::on_samples_cleared()
	567	{
	568	if (converted_data_)
	569	converted_data_->clear();
eae3bbbb SA	570
eae3bbbb SA	571	samples_cleared();
12ea3616 SA	572	}
	573
	574	void SignalBase::on_samples_added(QObject* segment, uint64_t start_sample,
	575	uint64_t end_sample)
	576	{
12ea3616	577	if (conversion_type_ != NoConversion) {
27a3f09b SA	578	if (conversion_thread_.joinable()) {
	579	// Notify the conversion thread since it's running
	580	conversion_input_cond_.notify_one();
	581	} else {
932bc246 SA	582	// Start the conversion thread unless the delay timer is running
	583	if (!delayed_conversion_starter_.isActive())
	584	start_conversion();
27a3f09b	585	}
12ea3616	586	}
eae3bbbb SA	587
eae3bbbb SA	588	samples_added(segment, start_sample, end_sample);
12ea3616 SA	589	}
12ea3616 SA	590
8e15445c SA	591	void SignalBase::on_min_max_changed(float min, float max)
8e15445c SA	592	{
f0f9c856	593	// Restart conversion if one is enabled and uses a calculated threshold
8e15445c	594	if ((conversion_type_ != NoConversion) &&
f0f9c856	595	(get_current_conversion_preset() == DynamicPreset))
932bc246	596	start_conversion(true);
c6d9cf65 SA	597
c6d9cf65 SA	598	min_max_changed(min, max);
8e15445c SA	599	}
8e15445c SA	600
12ea3616 SA	601	void SignalBase::on_capture_state_changed(int state)
12ea3616 SA	602	{
27a3f09b	603	if (state == Session::Running) {
8e15445c SA	604	// Restart conversion if one is enabled
8e15445c SA	605	if (conversion_type_ != NoConversion)
27a3f09b	606	start_conversion();
12ea3616	607	}
6de38b17 SA	608	}
6de38b17 SA	609
932bc246 SA	610	void SignalBase::on_delayed_conversion_start()
	611	{
	612	start_conversion();
	613	}
	614
bf0edd2b SA	615	} // namespace data
bf0edd2b SA	616	} // namespace pv