[libsigrok.git] / bindings / cxx / classes.cpp

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2013-2014 Martin Ling <martin-sigrok@earth.li>
 *
 * 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 3 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 "libsigrok/libsigrok.hpp"

namespace sigrok
{

/** Helper function to translate C errors to C++ exceptions. */
static void check(int result)
{
        if (result != SR_OK)
                throw Error(result);
}

/** Helper function to obtain valid strings from possibly null input. */
static const char *valid_string(const char *input)
{
        if (input != NULL)
                return input;
        else
                return "";
}

/** Helper function to convert between map<string, string> and GHashTable */

static GHashTable *map_to_hash(map<string, string> input)
{
        auto output = g_hash_table_new_full(
                g_str_hash, g_str_equal, g_free, g_free);
        for (auto entry : input)
                g_hash_table_insert(output,
                        g_strdup(entry.first.c_str()),
                        g_strdup(entry.second.c_str()));
    return output;
}

Error::Error(int result) : result(result)
{
}

const char *Error::what() const throw()
{
        return sr_strerror(result);
}

Error::~Error() throw()
{
}

shared_ptr<Context> Context::create()
{
        return shared_ptr<Context>(new Context(), Context::Deleter());
}

Context::Context() :
        session(NULL)
{
        check(sr_init(&structure));
        struct sr_dev_driver **driver_list = sr_driver_list();
        if (driver_list)
                for (int i = 0; driver_list[i]; i++)
                        drivers[driver_list[i]->name] =
                                new Driver(driver_list[i]);
        struct sr_input_format **input_list = sr_input_list();
        if (input_list)
                for (int i = 0; input_list[i]; i++)
                        input_formats[input_list[i]->id] =
                                new InputFormat(input_list[i]);
        struct sr_output_format **output_list = sr_output_list();
        if (output_list)
                for (int i = 0; output_list[i]; i++)
                        output_formats[output_list[i]->id] =
                                new OutputFormat(output_list[i]);
}

string Context::get_package_version()
{
        return sr_package_version_string_get();
}

string Context::get_lib_version()
{
        return sr_lib_version_string_get();
}

map<string, shared_ptr<Driver>> Context::get_drivers()
{
        map<string, shared_ptr<Driver>> result;
        for (auto entry: drivers)
        {
                auto name = entry.first;
                auto driver = entry.second;
                result[name] = static_pointer_cast<Driver>(
                        driver->get_shared_pointer(this));
        }
        return result;
}

map<string, shared_ptr<InputFormat>> Context::get_input_formats()
{
        map<string, shared_ptr<InputFormat>> result;
        for (auto entry: input_formats)
        {
                auto name = entry.first;
                auto input_format = entry.second;
                result[name] = static_pointer_cast<InputFormat>(
                        input_format->get_shared_pointer(this));
        }
        return result;
}

map<string, shared_ptr<OutputFormat>> Context::get_output_formats()
{
        map<string, shared_ptr<OutputFormat>> result;
        for (auto entry: output_formats)
        {
                auto name = entry.first;
                auto output_format = entry.second;
                result[name] = static_pointer_cast<OutputFormat>(
                        output_format->get_shared_pointer(this));
        }
        return result;
}

Context::~Context()
{
        for (auto entry : drivers)
                delete entry.second;
        for (auto entry : input_formats)
                delete entry.second;
        for (auto entry : output_formats)
                delete entry.second;
        check(sr_exit(structure));
}

const LogLevel *Context::get_log_level()
{
        return LogLevel::get(sr_log_loglevel_get());
}

void Context::set_log_level(const LogLevel *level)
{
        check(sr_log_loglevel_set(level->get_id()));
}

string Context::get_log_domain()
{
        return valid_string(sr_log_logdomain_get());
}

void Context::set_log_domain(string value)
{
        check(sr_log_logdomain_set(value.c_str()));
}

static int call_log_callback(void *cb_data, int loglevel, const char *format, va_list args)
{
        va_list args_copy;
        va_copy(args_copy, args);
        int length = vsnprintf(NULL, 0, format, args_copy);
        va_end(args_copy);
        char *buf = (char *) g_malloc(length + 1);
        vsprintf(buf, format, args);
        string message(buf, length);
        g_free(buf);

        LogCallbackFunction callback = *((LogCallbackFunction *) cb_data);

        try
        {
                callback(LogLevel::get(loglevel), message);
        }
        catch (Error e)
        {
                return e.result;
        }

        return SR_OK;
}

void Context::set_log_callback(LogCallbackFunction callback)
{
        log_callback = callback;
        check(sr_log_callback_set(call_log_callback, &log_callback));
} 

void Context::set_log_callback_default()
{
        check(sr_log_callback_set_default());
        log_callback = nullptr;
} 

shared_ptr<Session> Context::create_session()
{
        return shared_ptr<Session>(
                new Session(shared_from_this()), Session::Deleter());
}

shared_ptr<Session> Context::load_session(string filename)
{
        return shared_ptr<Session>(
                new Session(shared_from_this(), filename), Session::Deleter());
}

shared_ptr<Trigger> Context::create_trigger(string name)
{
        return shared_ptr<Trigger>(
                new Trigger(shared_from_this(), name), Trigger::Deleter());
}

Driver::Driver(struct sr_dev_driver *structure) :
        StructureWrapper<Context, struct sr_dev_driver>(structure),
        initialized(false)
{
}

Driver::~Driver()
{
        for (auto device : devices)
                delete device;
}

string Driver::get_name()
{
        return valid_string(structure->name);
}

string Driver::get_long_name()
{
        return valid_string(structure->longname);
}

vector<shared_ptr<HardwareDevice>> Driver::scan(
        map<const ConfigKey *, Glib::VariantBase> options)
{
        /* Initialise the driver if not yet done. */
        if (!initialized)
        {
                check(sr_driver_init(parent->structure, structure));
                initialized = true;
        }

        /* Clear all existing instances. */
        for (auto device : devices)
                delete device;
        devices.clear();

        /* Translate scan options to GSList of struct sr_config pointers. */
        GSList *option_list = NULL;
        for (auto entry : options)
        {
                auto key = entry.first;
                auto value = entry.second;
                auto config = g_new(struct sr_config, 1);
                config->key = key->get_id();
                config->data = value.gobj();
                option_list = g_slist_append(option_list, config);
        }

        /* Run scan. */
        GSList *device_list = sr_driver_scan(structure, option_list);

        /* Free option list. */
        g_slist_free_full(option_list, g_free);

        /* Create device objects. */
        for (GSList *device = device_list; device; device = device->next)
        {
                auto sdi = (struct sr_dev_inst *) device->data;
                devices.push_back(new HardwareDevice(this, sdi));
        }

        /* Free GSList returned from scan. */
        g_slist_free(device_list);

        /* Create list of shared pointers to device instances for return. */
        vector<shared_ptr<HardwareDevice>> result;
        for (auto device : devices)
                result.push_back(static_pointer_cast<HardwareDevice>(
                        device->get_shared_pointer(parent)));
        return result;
}

Configurable::Configurable(
                struct sr_dev_driver *driver,
                struct sr_dev_inst *sdi,
                struct sr_channel_group *cg) :
        config_driver(driver),
        config_sdi(sdi),
        config_channel_group(cg)
{
}

Configurable::~Configurable()
{
}

Glib::VariantBase Configurable::config_get(const ConfigKey *key)
{
        GVariant *data;
        check(sr_config_get(
                config_driver, config_sdi, config_channel_group,
                key->get_id(), &data));
        return Glib::VariantBase(data);
}

void Configurable::config_set(const ConfigKey *key, Glib::VariantBase value)
{
        check(sr_config_set(
                config_sdi, config_channel_group,
                key->get_id(), value.gobj()));
}

Glib::VariantContainerBase Configurable::config_list(const ConfigKey *key)
{
        GVariant *data;
        check(sr_config_list(
                config_driver, config_sdi, config_channel_group,
                key->get_id(), &data));
        return Glib::VariantContainerBase(data);
}

Device::Device(struct sr_dev_inst *structure) :
        Configurable(structure->driver, structure, NULL),
        StructureWrapper<Context, struct sr_dev_inst>(structure)
{
        for (GSList *entry = structure->channels; entry; entry = entry->next)
        {
                auto channel = (struct sr_channel *) entry->data;
                channels[channel] = new Channel(channel);
        }

        for (GSList *entry = structure->channel_groups; entry; entry = entry->next)
        {
                auto group = (struct sr_channel_group *) entry->data;
                channel_groups[group->name] = new ChannelGroup(this, group);
        }
}

Device::~Device()
{
        for (auto entry : channels)
                delete entry.second;
        for (auto entry : channel_groups)
                delete entry.second;
}

string Device::get_vendor()
{
        return valid_string(structure->vendor);
}

string Device::get_model()
{
        return valid_string(structure->model);
}

string Device::get_version()
{
        return valid_string(structure->version);
}

vector<shared_ptr<Channel>> Device::get_channels()
{
        vector<shared_ptr<Channel>> result;
        for (auto entry : channels)
                result.push_back(static_pointer_cast<Channel>(
                        entry.second->get_shared_pointer(this)));
        return result;
}

shared_ptr<Channel> Device::get_channel(struct sr_channel *ptr)
{
        return static_pointer_cast<Channel>(
                channels[ptr]->get_shared_pointer(this));
}

map<string, shared_ptr<ChannelGroup>>
Device::get_channel_groups()
{
        map<string, shared_ptr<ChannelGroup>> result;
        for (auto entry: channel_groups)
        {
                auto name = entry.first;
                auto channel_group = entry.second;
                result[name] = static_pointer_cast<ChannelGroup>(
                        channel_group->get_shared_pointer(this));
        }
        return result;
}

void Device::open()
{
        check(sr_dev_open(structure));
}

void Device::close()
{
        check(sr_dev_close(structure));
}

HardwareDevice::HardwareDevice(Driver *driver, struct sr_dev_inst *structure) :
        Device(structure),
        driver(driver)
{
}

HardwareDevice::~HardwareDevice()
{
}

shared_ptr<Driver> HardwareDevice::get_driver()
{
        return static_pointer_cast<Driver>(driver->get_shared_pointer(parent));
}

Channel::Channel(struct sr_channel *structure) :
        StructureWrapper<Device, struct sr_channel>(structure),
        type(ChannelType::get(structure->type))
{
}

Channel::~Channel()
{
}

string Channel::get_name()
{
        return valid_string(structure->name);
}

void Channel::set_name(string name)
{
        check(sr_dev_channel_name_set(parent->structure, structure->index, name.c_str()));
}

const ChannelType *Channel::get_type()
{
        return ChannelType::get(structure->type);
}

bool Channel::get_enabled()
{
        return structure->enabled;
}

void Channel::set_enabled(bool value)
{
        check(sr_dev_channel_enable(parent->structure, structure->index, value));
}

ChannelGroup::ChannelGroup(Device *device,
                struct sr_channel_group *structure) :
        StructureWrapper<Device, struct sr_channel_group>(structure),
        Configurable(device->structure->driver, device->structure, structure)
{
        for (GSList *entry = structure->channels; entry; entry = entry->next)
                channels.push_back(device->channels[(struct sr_channel *)entry->data]);
}

ChannelGroup::~ChannelGroup()
{
}

string ChannelGroup::get_name()
{
        return valid_string(structure->name);
}

vector<shared_ptr<Channel>> ChannelGroup::get_channels()
{
        vector<shared_ptr<Channel>> result;
        for (auto channel : channels)
                result.push_back(static_pointer_cast<Channel>(
                        channel->get_shared_pointer(parent)));
        return result;
}

Trigger::Trigger(shared_ptr<Context> context, string name) : 
        structure(sr_trigger_new(name.c_str())), context(context)
{
        for (auto stage = structure->stages; stage; stage = stage->next)
                stages.push_back(new TriggerStage((struct sr_trigger_stage *) stage->data));
}

Trigger::~Trigger()
{
        for (auto stage: stages)
                delete stage;

        sr_trigger_free(structure);
}

string Trigger::get_name()
{
        return structure->name;
}

vector<shared_ptr<TriggerStage>> Trigger::get_stages()
{
        vector<shared_ptr<TriggerStage>> result;
        for (auto stage : stages)
                result.push_back(static_pointer_cast<TriggerStage>(
                        stage->get_shared_pointer(this)));
        return result;
}

shared_ptr<TriggerStage> Trigger::add_stage()
{
        auto stage = new TriggerStage(sr_trigger_stage_add(structure));
        stages.push_back(stage);
        return static_pointer_cast<TriggerStage>(
                stage->get_shared_pointer(this));
}

TriggerStage::TriggerStage(struct sr_trigger_stage *structure) : 
        StructureWrapper<Trigger, struct sr_trigger_stage>(structure)
{
}

TriggerStage::~TriggerStage()
{
        for (auto match : matches)
                delete match;
}
        
int TriggerStage::get_number()
{
        return structure->stage;
}

vector<shared_ptr<TriggerMatch>> TriggerStage::get_matches()
{
        vector<shared_ptr<TriggerMatch>> result;
        for (auto match : matches)
                result.push_back(static_pointer_cast<TriggerMatch>(
                        match->get_shared_pointer(this)));
        return result;
}

void TriggerStage::add_match(shared_ptr<Channel> channel, const TriggerMatchType *type, float value)
{
        check(sr_trigger_match_add(structure, channel->structure, type->get_id(), value));
        matches.push_back(new TriggerMatch(
                (struct sr_trigger_match *) g_slist_last(structure->matches)->data, channel));
}

void TriggerStage::add_match(shared_ptr<Channel> channel, const TriggerMatchType *type)
{
        add_match(channel, type, NAN);
}

TriggerMatch::TriggerMatch(struct sr_trigger_match *structure, shared_ptr<Channel> channel) :
        StructureWrapper<TriggerStage, struct sr_trigger_match>(structure), channel(channel)
{
}

TriggerMatch::~TriggerMatch()
{
}

shared_ptr<Channel> TriggerMatch::get_channel()
{
        return channel;
}

const TriggerMatchType *TriggerMatch::get_type()
{
        return TriggerMatchType::get(structure->match);
}

float TriggerMatch::get_value()
{
        return structure->value;
}

DatafeedCallbackData::DatafeedCallbackData(Session *session,
                DatafeedCallbackFunction callback) :
        callback(callback), session(session)
{
}

void DatafeedCallbackData::run(const struct sr_dev_inst *sdi,
        const struct sr_datafeed_packet *pkt)
{
        auto device = session->devices[sdi];
        auto packet = shared_ptr<Packet>(new Packet(device, pkt), Packet::Deleter());
        callback(device, packet);
}

SourceCallbackData::SourceCallbackData(shared_ptr<EventSource> source) :
        source(source)
{
}

bool SourceCallbackData::run(int revents)
{
        return source->callback((Glib::IOCondition) revents);
}

shared_ptr<EventSource> EventSource::create(int fd, Glib::IOCondition events,
        int timeout, SourceCallbackFunction callback)
{
        auto result = new EventSource(timeout, callback);
        result->type = EventSource::SOURCE_FD;
        result->fd = fd;
        result->events = events;
        return shared_ptr<EventSource>(result, EventSource::Deleter());
}

shared_ptr<EventSource> EventSource::create(Glib::PollFD pollfd, int timeout,
        SourceCallbackFunction callback)
{
        auto result = new EventSource(timeout, callback);
        result->type = EventSource::SOURCE_POLLFD;
        result->pollfd = pollfd;
        return shared_ptr<EventSource>(result, EventSource::Deleter());
}

shared_ptr<EventSource> EventSource::create(Glib::RefPtr<Glib::IOChannel> channel,
        Glib::IOCondition events, int timeout, SourceCallbackFunction callback)
{
        auto result = new EventSource(timeout, callback);
        result->type = EventSource::SOURCE_IOCHANNEL;
        result->channel = channel;
        result->events = events;
        return shared_ptr<EventSource>(result, EventSource::Deleter());
}

EventSource::EventSource(int timeout, SourceCallbackFunction callback) :
        timeout(timeout), callback(callback)
{
}

EventSource::~EventSource()
{
}

Session::Session(shared_ptr<Context> context) :
        context(context), saving(false)
{
        check(sr_session_new(&structure));
        context->session = this;
}

Session::Session(shared_ptr<Context> context, string filename) :
        context(context), saving(false)
{
        check(sr_session_load(filename.c_str(), &structure));
        context->session = this;
}

Session::~Session()
{
        check(sr_session_destroy(structure));

        for (auto callback : datafeed_callbacks)
                delete callback;

        for (auto entry : source_callbacks)
                delete entry.second;
}

void Session::add_device(shared_ptr<Device> device)
{
        check(sr_session_dev_add(structure, device->structure));
        devices[device->structure] = device;
}

vector<shared_ptr<Device>> Session::get_devices()
{
        GSList *dev_list;
        check(sr_session_dev_list(structure, &dev_list));
        vector<shared_ptr<Device>> result;
        for (GSList *dev = dev_list; dev; dev = dev->next)
        {
                auto sdi = (struct sr_dev_inst *) dev->data;
                if (devices.count(sdi) == 0)
                        devices[sdi] = shared_ptr<Device>(
                                new Device(sdi), Device::Deleter());
                result.push_back(devices[sdi]);
        }
        return result;
}

void Session::remove_devices()
{
        devices.clear();
        check(sr_session_dev_remove_all(structure));
}

void Session::start()
{
        check(sr_session_start(structure));
}

void Session::run()
{
        check(sr_session_run(structure));
}

void Session::stop()
{
        check(sr_session_stop(structure));
}

void Session::begin_save(string filename)
{
        saving = true;
        save_initialized = false;
        save_filename = filename;
        save_samplerate = 0;
}

void Session::append(shared_ptr<Packet> packet)
{
        if (!saving)
                throw Error(SR_ERR);

        switch (packet->structure->type)
        {
                case SR_DF_META:
                {
                        auto meta = (const struct sr_datafeed_meta *)
                                packet->structure->payload;

                        for (auto l = meta->config; l; l = l->next)
                        {
                                auto config = (struct sr_config *) l->data;
                                if (config->key == SR_CONF_SAMPLERATE)
                                        save_samplerate = g_variant_get_uint64(config->data);
                        }

                        break;
                }
                case SR_DF_LOGIC:
                {
                        if (save_samplerate == 0)
                        {
                                GVariant *samplerate;

                                check(sr_config_get(packet->device->structure->driver,
                                        packet->device->structure, NULL, SR_CONF_SAMPLERATE,
                                        &samplerate));

                                save_samplerate = g_variant_get_uint64(samplerate);

                                g_variant_unref(samplerate);
                        }

                        if (!save_initialized)
                        {
                                vector<shared_ptr<Channel>> save_channels;

                                for (auto channel : packet->device->get_channels())
                                        if (channel->structure->enabled &&
                                                        channel->structure->type == SR_CHANNEL_LOGIC)
                                                save_channels.push_back(channel);

                                auto channels = g_new(char *, save_channels.size());

                                int i = 0;
                                for (auto channel : save_channels)
                                                channels[i++] = channel->structure->name;
                                channels[i] = NULL;

                                int ret = sr_session_save_init(structure, save_filename.c_str(),
                                                save_samplerate, channels);

                                g_free(channels);

                                if (ret != SR_OK)
                                        throw Error(ret);

                                save_initialized = true;
                        }

                        auto logic = (const struct sr_datafeed_logic *)
                                packet->structure->payload;

                        check(sr_session_append(structure, save_filename.c_str(),
                                (uint8_t *) logic->data, logic->unitsize,
                                logic->length / logic->unitsize));
                }
        }
}

void Session::append(void *data, size_t length, unsigned int unit_size)
{
        check(sr_session_append(structure, save_filename.c_str(),
                (uint8_t *) data, unit_size, length));
}

static void datafeed_callback(const struct sr_dev_inst *sdi,
        const struct sr_datafeed_packet *pkt, void *cb_data)
{
        auto callback = static_cast<DatafeedCallbackData *>(cb_data);
        callback->run(sdi, pkt);
}
        
void Session::add_datafeed_callback(DatafeedCallbackFunction callback)
{
        auto cb_data = new DatafeedCallbackData(this, callback);
        check(sr_session_datafeed_callback_add(structure, datafeed_callback, cb_data));
        datafeed_callbacks.push_back(cb_data);
}

void Session::remove_datafeed_callbacks(void)
{
        check(sr_session_datafeed_callback_remove_all(structure));
        for (auto callback : datafeed_callbacks)
                delete callback;
        datafeed_callbacks.clear();
}

static int source_callback(int fd, int revents, void *cb_data)
{
        (void) fd;
        auto callback = (SourceCallbackData *) cb_data;
        return callback->run(revents);
}

void Session::add_source(shared_ptr<EventSource> source)
{
        if (source_callbacks.count(source) == 1)
                throw Error(SR_ERR_ARG);

        auto cb_data = new SourceCallbackData(source);

        switch (source->type)
        {
                case EventSource::SOURCE_FD:
                        check(sr_session_source_add(structure, source->fd, source->events,
                                source->timeout, source_callback, cb_data));
                        break;
                case EventSource::SOURCE_POLLFD:
                        check(sr_session_source_add_pollfd(structure,
                                source->pollfd.gobj(), source->timeout, source_callback,
                                cb_data));
                        break;
                case EventSource::SOURCE_IOCHANNEL:
                        check(sr_session_source_add_channel(structure,
                                source->channel->gobj(), source->events, source->timeout,
                                source_callback, cb_data));
                        break;
        }

        source_callbacks[source] = cb_data;
}

void Session::remove_source(shared_ptr<EventSource> source)
{
        if (source_callbacks.count(source) == 0)
                throw Error(SR_ERR_ARG);

        switch (source->type)
        {
                case EventSource::SOURCE_FD:
                        check(sr_session_source_remove(structure, source->fd));
                        break;
                case EventSource::SOURCE_POLLFD:
                        check(sr_session_source_remove_pollfd(structure,
                                source->pollfd.gobj()));
                        break;
                case EventSource::SOURCE_IOCHANNEL:
                        check(sr_session_source_remove_channel(structure,
                                source->channel->gobj()));
                        break;
        }

        delete source_callbacks[source];

        source_callbacks.erase(source);
}

shared_ptr<Trigger> Session::get_trigger()
{
        return trigger;
}

void Session::set_trigger(shared_ptr<Trigger> trigger)
{
        check(sr_session_trigger_set(structure, trigger->structure));
        this->trigger = trigger;
}

Packet::Packet(shared_ptr<Device> device,
        const struct sr_datafeed_packet *structure) :
        structure(structure),
        device(device)
{
        switch (structure->type)
        {
                case SR_DF_HEADER:
                        payload = new Header(
                                static_cast<const struct sr_datafeed_header *>(
                                        structure->payload));
                        break;
                case SR_DF_META:
                        payload = new Meta(
                                static_cast<const struct sr_datafeed_meta *>(
                                        structure->payload));
                        break;
                case SR_DF_LOGIC:
                        payload = new Logic(
                                static_cast<const struct sr_datafeed_logic *>(
                                        structure->payload));
                        break;
                case SR_DF_ANALOG:
                        payload = new Analog(
                                static_cast<const struct sr_datafeed_analog *>(
                                        structure->payload));
                        break;
        }
}

Packet::~Packet()
{
        if (payload)
                delete payload;
}

const PacketType *Packet::get_type()
{
        return PacketType::get(structure->type);
}

shared_ptr<PacketPayload> Packet::get_payload()
{
        return payload->get_shared_pointer(this);
}

PacketPayload::PacketPayload()
{
}

PacketPayload::~PacketPayload()
{
}

Header::Header(const struct sr_datafeed_header *structure) :
        PacketPayload(),
        StructureWrapper<Packet, const struct sr_datafeed_header>(structure)
{
}

Header::~Header()
{
}

int Header::get_feed_version()
{
        return structure->feed_version;
}

Glib::TimeVal Header::get_start_time()
{
        return Glib::TimeVal(
                structure->starttime.tv_sec,
                structure->starttime.tv_usec);
}

Meta::Meta(const struct sr_datafeed_meta *structure) :
        PacketPayload(),
        StructureWrapper<Packet, const struct sr_datafeed_meta>(structure)
{
}

Meta::~Meta()
{
}

map<const ConfigKey *, Glib::VariantBase> Meta::get_config()
{
        map<const ConfigKey *, Glib::VariantBase> result;
        for (auto l = structure->config; l; l = l->next)
        {
                auto config = (struct sr_config *) l->data;
                result[ConfigKey::get(config->key)] = Glib::VariantBase(config->data);
        }
        return result;
}

Logic::Logic(const struct sr_datafeed_logic *structure) :
        PacketPayload(),
        StructureWrapper<Packet, const struct sr_datafeed_logic>(structure)
{
}

Logic::~Logic()
{
}

void *Logic::get_data_pointer()
{
        return structure->data;
}

size_t Logic::get_data_length()
{
        return structure->length;
}

unsigned int Logic::get_unit_size()
{
        return structure->unitsize;
}

Analog::Analog(const struct sr_datafeed_analog *structure) :
        PacketPayload(),
        StructureWrapper<Packet, const struct sr_datafeed_analog>(structure)
{
}

Analog::~Analog()
{
}

float *Analog::get_data_pointer()
{
        return structure->data;
}

unsigned int Analog::get_num_samples()
{
        return structure->num_samples;
}

vector<shared_ptr<Channel>> Analog::get_channels()
{
        vector<shared_ptr<Channel>> result;
        for (auto l = structure->channels; l; l = l->next)
                result.push_back(parent->device->get_channel(
                        (struct sr_channel *)l->data));
        return result;
}

const Quantity *Analog::get_mq()
{
        return Quantity::get(structure->mq);
}

const Unit *Analog::get_unit()
{
        return Unit::get(structure->unit);
}

vector<const QuantityFlag *> Analog::get_mq_flags()
{
        return QuantityFlag::flags_from_mask(structure->mqflags);
}

InputFormat::InputFormat(struct sr_input_format *structure) :
        StructureWrapper<Context, struct sr_input_format>(structure)
{
}

InputFormat::~InputFormat()
{
}

string InputFormat::get_name()
{
        return valid_string(structure->id);
}

string InputFormat::get_description()
{
        return valid_string(structure->description);
}

bool InputFormat::format_match(string filename)
{
        return structure->format_match(filename.c_str());
}

shared_ptr<InputFileDevice> InputFormat::open_file(string filename,
                map<string, string> options)
{
        auto input = g_new(struct sr_input, 1);
        input->param = map_to_hash(options);

        /** Run initialisation. */
        check(structure->init(input, filename.c_str()));

        /** Create virtual device. */
        return shared_ptr<InputFileDevice>(new InputFileDevice(
                static_pointer_cast<InputFormat>(shared_from_this()), input, filename),
                InputFileDevice::Deleter());
}

InputFileDevice::InputFileDevice(shared_ptr<InputFormat> format,
                struct sr_input *input, string filename) :
        Device(input->sdi),
        input(input),
        format(format),
        filename(filename)
{
}

InputFileDevice::~InputFileDevice()
{
        g_hash_table_unref(input->param);
        g_free(input);
}

void InputFileDevice::load()
{
        check(format->structure->loadfile(input, filename.c_str()));
}

OutputFormat::OutputFormat(struct sr_output_format *structure) :
        StructureWrapper<Context, struct sr_output_format>(structure)
{
}

OutputFormat::~OutputFormat()
{
}

string OutputFormat::get_name()
{
        return valid_string(structure->id);
}

string OutputFormat::get_description()
{
        return valid_string(structure->description);
}

shared_ptr<Output> OutputFormat::create_output(
        shared_ptr<Device> device, map<string, string> options)
{
        return shared_ptr<Output>(
                new Output(
                        static_pointer_cast<OutputFormat>(shared_from_this()),
                                device, options),
                Output::Deleter());
}

Output::Output(shared_ptr<OutputFormat> format,
                shared_ptr<Device> device, map<string, string> options) :
        structure(sr_output_new(format->structure,
                map_to_hash(options), device->structure)),
        format(format), device(device), options(options)
{
}

Output::~Output()
{
        g_hash_table_unref(structure->params);
        check(sr_output_free(structure));
}

string Output::receive(shared_ptr<Packet> packet)
{
        GString *out;
        check(sr_output_send(structure, packet->structure, &out));
        if (out)
        {
                auto result = string(out->str, out->str + out->len);
                g_string_free(out, true);
                return result;
        }
        else
        {
                return string();
        }
}

#include "enums.cpp"

}