Moved DeviceManager::use_device and release_device into DevInst

[pulseview.git] / pv / device / devinst.cpp

/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2014 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 <cassert>

#include <QDebug>

#include <libsigrok/libsigrok.h>

#include "devinst.h"

#include <pv/sigsession.h>

namespace pv {
namespace device {

DevInst::DevInst(sr_dev_inst *sdi) :
	_sdi(sdi),
	_owner(NULL)
{
	assert(_sdi);
}

sr_dev_inst* DevInst::dev_inst() const
{
	return _sdi;
}

void DevInst::use(SigSession *owner)
{
	assert(owner);
	assert(!_owner);
	_owner = owner;
	sr_dev_open(_sdi);
}

void DevInst::release()
{
	if (_owner) {
		_owner->release_device(this);
		_owner = NULL;
		sr_dev_close(_sdi);
	}
}

SigSession* DevInst::owner() const
{
	return _owner;
}

GVariant* DevInst::get_config(const sr_probe_group *group, int key)
{
	GVariant *data = NULL;
	if (sr_config_get(_sdi->driver, _sdi, group, key, &data) != SR_OK)
		return NULL;
	return data;
}

bool DevInst::set_config(const sr_probe_group *group, int key, GVariant *data)
{
	if(sr_config_set(_sdi, group, key, data) == SR_OK) {
		config_changed();
		return true;
	}
	return false;
}

GVariant* DevInst::list_config(const sr_probe_group *group, int key)
{
	GVariant *data = NULL;
	if (sr_config_list(_sdi->driver, _sdi, group, key, &data) != SR_OK)
		return NULL;
	return data;
}

void DevInst::enable_probe(const sr_probe *probe, bool enable)
{
	for (const GSList *p = _sdi->probes; p; p = p->next)
		if (probe == p->data) {
			const_cast<sr_probe*>(probe)->enabled = enable;
			config_changed();
			return;
		}

	// Probe was not found in the device
	assert(0);
}

uint64_t DevInst::get_sample_limit()
{
	uint64_t sample_limit;
	GVariant* gvar = get_config(NULL, SR_CONF_LIMIT_SAMPLES);
	if (gvar != NULL) {
		sample_limit = g_variant_get_uint64(gvar);
		g_variant_unref(gvar);
	} else {
		sample_limit = 0U;
	}
	return sample_limit;
}

} // device
} // pv