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//
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
//
// 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, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef GNASH_MOVIELIBRARY_H
#define GNASH_MOVIELIBRARY_H
#include "rc.h"
#include "movie_definition.h"
#include <map>
#include <algorithm>
namespace gnash {
/// Library of SWF movies indexed by URL strings
//
/// Elements are actually movie_definitions, the ones
/// associated with URLS. They may be BitmapMovieDefinitions or
/// SWFMovieDefinitions.
class MovieLibrary
{
public:
struct LibraryItem
{
boost::intrusive_ptr<movie_definition> def;
unsigned hitCount;
};
typedef std::map<std::string, LibraryItem> LibraryContainer;
MovieLibrary()
:
_limit(8)
{
RcInitFile& rcfile = RcInitFile::getDefaultInstance();
setLimit(rcfile.getMovieLibraryLimit());
}
/// Sets the maximum number of items to hold in the library. When adding new
/// items, the one with the least hit count is being removed in that case.
/// Zero is a valid limit (disables library).
void setLimit(LibraryContainer::size_type limit)
{
_limit = limit;
limitSize(_limit);
}
bool get(const std::string& key,
boost::intrusive_ptr<movie_definition>* ret)
{
LibraryContainer::iterator it = _map.find(key);
if (it == _map.end()) return false;
*ret = it->second.def;
it->second.hitCount++;
return true;
}
#ifdef GNASH_USE_GC
/// Mark all library elements as reachable (for GC)
void markReachableResources() const
{
for (LibraryContainer::const_iterator i=_map.begin(), e=_map.end();
i!=e; ++i)
{
i->second.def->setReachable();
}
}
#endif
void add(const std::string& key, movie_definition* mov)
{
if (!_limit) return;
if (_limit) limitSize(_limit - 1);
LibraryItem temp;
temp.def = mov;
temp.hitCount = 0;
_map[key] = temp;
}
void clear() { _map.clear(); }
private:
static bool findWorstHitCount(const LibraryContainer::value_type& a,
const LibraryContainer::value_type& b)
{
return (a.second.hitCount < b.second.hitCount);
}
LibraryContainer _map;
unsigned _limit;
void limitSize(LibraryContainer::size_type max) {
if (max < 1) {
clear();
return;
}
while (_map.size() > max) {
_map.erase(std::min_element(_map.begin(), _map.end(),
&findWorstHitCount));
}
}
};
}
#endif
// Local Variables:
// mode: C++
// c-basic-offset: 8
// tab-width: 8
// indent-tabs-mode: t
// End:
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