device.cpp

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/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <stdint.h>

#include <QDebug>

#include "device.hpp"

#include <pv/prop/bool.hpp>
#include <pv/prop/double.hpp>
#include <pv/prop/enum.hpp>
#include <pv/prop/int.hpp>

#include <libsigrokcxx/libsigrokcxx.hpp>

using boost::optional;
using std::function;
using std::make_pair;
using std::pair;
using std::shared_ptr;
using std::string;
using std::vector;

using sigrok::Capability;
using sigrok::Configurable;
using sigrok::ConfigKey;
using sigrok::Error;

using pv::prop::Bool;
using pv::prop::Double;
using pv::prop::Enum;
using pv::prop::Int;
using pv::prop::Property;

namespace pv {
namespace binding {

Device::Device(shared_ptr<sigrok::Configurable> configurable) :
    configurable_(configurable)
{

    auto keys = configurable->config_keys();

    for (auto key : keys) {

        auto capabilities = configurable->config_capabilities(key);

        if (!capabilities.count(Capability::GET) ||
            !capabilities.count(Capability::SET))
            continue;

        string name_str;
        try {
            name_str = key->description();
        } catch (Error e) {
            name_str = key->name();
        }

        const QString name = QString::fromStdString(name_str);

        const Property::Getter get = [&, key]() {
            return configurable_->config_get(key); };
        const Property::Setter set = [&, key](Glib::VariantBase value) {
            configurable_->config_set(key, value);
            config_changed();
        };

        switch (key->id()) {
        case SR_CONF_SAMPLERATE:
            // Sample rate values are not bound because they are shown
            // in the MainBar
            break;

        case SR_CONF_CAPTURE_RATIO:
            bind_int(name, "%", pair<int64_t, int64_t>(0, 100),
                get, set);
            break;

        case SR_CONF_PATTERN_MODE:
        case SR_CONF_BUFFERSIZE:
        case SR_CONF_TRIGGER_SOURCE:
        case SR_CONF_TRIGGER_SLOPE:
        case SR_CONF_FILTER:
        case SR_CONF_COUPLING:
        case SR_CONF_CLOCK_EDGE:
            bind_enum(name, key, capabilities, get, set);
            break;

        case SR_CONF_EXTERNAL_CLOCK:
        case SR_CONF_RLE:
        case SR_CONF_POWER_OFF:
            bind_bool(name, get, set);
            break;

        case SR_CONF_TIMEBASE:
            bind_enum(name, key, capabilities, get, set, print_timebase);
            break;

        case SR_CONF_VDIV:
            bind_enum(name, key, capabilities, get, set, print_vdiv);
            break;

        case SR_CONF_VOLTAGE_THRESHOLD:
            bind_enum(name, key, capabilities, get, set, print_voltage_threshold);
            break;

        case SR_CONF_PROBE_FACTOR:
            bind_int(name, "", pair<int64_t, int64_t>(1, 500), get, set);
            break;

        default:
            break;
        }
    }
}

void Device::bind_bool(const QString &name,
    Property::Getter getter, Property::Setter setter)
{
    assert(configurable_);
    properties_.push_back(shared_ptr<Property>(new Bool(
        name, getter, setter)));
}

void Device::bind_enum(const QString &name,
    const ConfigKey *key, std::set<const Capability *> capabilities,
    Property::Getter getter,
    Property::Setter setter, function<QString (Glib::VariantBase)> printer)
{
    Glib::VariantBase gvar;
    vector< pair<Glib::VariantBase, QString> > values;

    assert(configurable_);

    if (!capabilities.count(Capability::LIST))
        return;

    Glib::VariantIter iter(configurable_->config_list(key));
    while ((iter.next_value(gvar)))
        values.push_back(make_pair(gvar, printer(gvar)));

    properties_.push_back(shared_ptr<Property>(new Enum(name, values,
        getter, setter)));
}

void Device::bind_int(const QString &name, QString suffix,
    optional< std::pair<int64_t, int64_t> > range,
    Property::Getter getter, Property::Setter setter)
{
    assert(configurable_);

    properties_.push_back(shared_ptr<Property>(new Int(name, suffix, range,
        getter, setter)));
}

QString Device::print_timebase(Glib::VariantBase gvar)
{
    uint64_t p, q;
    g_variant_get(gvar.gobj(), "(tt)", &p, &q);
    return QString::fromUtf8(sr_period_string(p * q));
}

QString Device::print_vdiv(Glib::VariantBase gvar)
{
    uint64_t p, q;
    g_variant_get(gvar.gobj(), "(tt)", &p, &q);
    return QString::fromUtf8(sr_voltage_string(p, q));
}

QString Device::print_voltage_threshold(Glib::VariantBase gvar)
{
    gdouble lo, hi;
    g_variant_get(gvar.gobj(), "(dd)", &lo, &hi);
    return QString("L<%1V H>%2V").arg(lo, 0, 'f', 1).arg(hi, 0, 'f', 1);
}

} // binding
} // pv