[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;

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());
}

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)));
	}

	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)));
	}
}

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;
	int preset;

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

	if (always_custom)
		preset = -1;
	else
		preset = get_current_conversion_preset();

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

		if (preset == -1) {
			auto thr_iter = conversion_options_.find("threshold_value");
			if (thr_iter != conversion_options_.end())
				thr = (thr_iter->second).toDouble();
		}

		if (preset == 0)
			thr = (min_value_ + max_value_) * 0.5;  // middle between min and max

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

		result.push_back(thr);
	}

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

		if (preset == -1) {
			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 == 0) {
			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 (preset == 1) { thr_lo = 0.3; thr_hi = 1.2; }
		if (preset == 2) { thr_lo = 0.7; thr_hi = 2.5; }
		if (preset == 3) { thr_lo = 1.3; thr_hi = 3.7; }
		if (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;
}

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

	return -1;
}

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

	samples_added(segment, start_sample, end_sample);
}

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