khanat-opennel-code/code/nel/src/sound/group_controller.cpp

129 lines
3.3 KiB
C++

/**
* \file group_controller.cpp
* \brief CGroupController
* \date 2012-04-10 09:29GMT
* \author Jan Boon (Kaetemi)
* CGroupController
*/
/*
* Copyright (C) 2012 by authors
*
* This file is part of RYZOM CORE.
* RYZOM CORE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* RYZOM CORE 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
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with RYZOM CORE. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include "stdsound.h"
#include <nel/sound/group_controller.h>
// STL includes
// NeL includes
// #include <nel/misc/debug.h>
#include <nel/sound/source_common.h>
// Project includes
using namespace std;
// using namespace NLMISC;
namespace NLSOUND {
CGroupController::CGroupController(CGroupController *parent) :
m_Parent(parent), m_Gain(1.0f), m_NbSourcesInclChild(0)
{
}
CGroupController::~CGroupController()
{
// If m_Sources is not empty, a crash is very likely.
nlassert(m_Sources.empty());
for (std::map<std::string, CGroupController *>::iterator it(m_Children.begin()), end(m_Children.end()); it != end; ++it)
{
delete it->second;
it->second = NULL;
}
m_Parent = NULL;
}
void CGroupController::addSource(CSourceCommon *source)
{
nlassert(this);
m_Sources.insert(source);
increaseSources();
}
void CGroupController::removeSource(CSourceCommon *source)
{
decreaseSources();
m_Sources.erase(source);
}
std::string CGroupController::getPath() // overridden by root
{
for (std::map<std::string, CGroupController *>::iterator it(m_Parent->m_Children.begin()), end(m_Parent->m_Children.end()); it != end; ++it)
{
if (it->second == this)
{
const std::string &name = it->first;
std::string returnPath = m_Parent->getPath() + ":" + name;
return returnPath;
}
}
nlerror("Group Controller not child of parent");
return "";
}
void CGroupController::calculateFinalGain() // overridden by root
{
m_FinalGain = calculateTotalGain() * m_Parent->getFinalGain();
}
void CGroupController::updateSourceGain()
{
// Dont update source gain when this controller is inactive.
if (m_NbSourcesInclChild)
{
calculateFinalGain();
for (TSourceContainer::iterator it(m_Sources.begin()), end(m_Sources.end()); it != end; ++it)
(*it)->updateFinalGain();
for (std::map<std::string, CGroupController *>::iterator it(m_Children.begin()), end(m_Children.end()); it != end; ++it)
(*it).second->updateSourceGain();
}
}
void CGroupController::increaseSources() // overridden by root
{
++m_NbSourcesInclChild;
m_Parent->increaseSources();
// Update source gain when this controller was inactive before but the parent was active before.
// Thus, when this controller was the root of inactive controllers.
if (m_NbSourcesInclChild == 1 && m_Parent->m_NbSourcesInclChild > 1)
updateSourceGain();
}
void CGroupController::decreaseSources() // overridden by root
{
--m_NbSourcesInclChild;
m_Parent->decreaseSources();
}
} /* namespace NLSOUND */
/* end of file */