[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)));

		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;
	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_min_max_changed(float min, float max)
{
	(void)min;
	(void)max;

	// Restart conversion if one is enabled and uses an automatic threshold
	if ((conversion_type_ != NoConversion) &&
		(get_current_conversion_preset() == 0))
		start_conversion();
}

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

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