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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "base/plugins.h"
#include "common/func.h"
#include "common/debug.h"
#ifdef DYNAMIC_MODULES
#include "common/config-manager.h"
#include "common/fs.h"
#endif
// Plugin versioning
int pluginTypeVersions[PLUGIN_TYPE_MAX] = {
PLUGIN_TYPE_ENGINE_VERSION,
PLUGIN_TYPE_MUSIC_VERSION,
};
// Abstract plugins
PluginType Plugin::getType() const {
return _type;
}
const char *Plugin::getName() const {
return _pluginObject->getName();
}
class StaticPlugin : public Plugin {
public:
StaticPlugin(PluginObject *pluginobject, PluginType type) {
assert(pluginobject);
assert(type < PLUGIN_TYPE_MAX);
_pluginObject = pluginobject;
_type = type;
}
~StaticPlugin() {
delete _pluginObject;
}
virtual bool loadPlugin() { return true; }
virtual void unloadPlugin() {}
};
class StaticPluginProvider : public PluginProvider {
public:
StaticPluginProvider() {
}
~StaticPluginProvider() {
}
virtual PluginList getPlugins() {
PluginList pl;
#define LINK_PLUGIN(ID) \
extern PluginType g_##ID##_type; \
extern PluginObject *g_##ID##_getObject(); \
pl.push_back(new StaticPlugin(g_##ID##_getObject(), g_##ID##_type));
// "Loader" for the static plugins.
// Iterate over all registered (static) plugins and load them.
// Engine plugins
#if PLUGIN_ENABLED_STATIC(SCUMM)
LINK_PLUGIN(SCUMM)
#endif
#if PLUGIN_ENABLED_STATIC(AGI)
LINK_PLUGIN(AGI)
#endif
#if PLUGIN_ENABLED_STATIC(AGOS)
LINK_PLUGIN(AGOS)
#endif
#if PLUGIN_ENABLED_STATIC(CINE)
LINK_PLUGIN(CINE)
#endif
#if PLUGIN_ENABLED_STATIC(CRUISE)
LINK_PLUGIN(CRUISE)
#endif
#if PLUGIN_ENABLED_STATIC(DRACI)
LINK_PLUGIN(DRACI)
#endif
#if PLUGIN_ENABLED_STATIC(DRASCULA)
LINK_PLUGIN(DRASCULA)
#endif
#if PLUGIN_ENABLED_STATIC(GOB)
LINK_PLUGIN(GOB)
#endif
#if PLUGIN_ENABLED_STATIC(GROOVIE)
LINK_PLUGIN(GROOVIE)
#endif
#if PLUGIN_ENABLED_STATIC(HUGO)
LINK_PLUGIN(HUGO)
#endif
#if PLUGIN_ENABLED_STATIC(KYRA)
LINK_PLUGIN(KYRA)
#endif
#if PLUGIN_ENABLED_STATIC(LASTEXPRESS)
LINK_PLUGIN(LASTEXPRESS)
#endif
#if PLUGIN_ENABLED_STATIC(LURE)
LINK_PLUGIN(LURE)
#endif
#if PLUGIN_ENABLED_STATIC(M4)
LINK_PLUGIN(M4)
#endif
#if PLUGIN_ENABLED_STATIC(MADE)
LINK_PLUGIN(MADE)
#endif
#if PLUGIN_ENABLED_STATIC(MOHAWK)
LINK_PLUGIN(MOHAWK)
#endif
#if PLUGIN_ENABLED_STATIC(PARALLACTION)
LINK_PLUGIN(PARALLACTION)
#endif
#if PLUGIN_ENABLED_STATIC(QUEEN)
LINK_PLUGIN(QUEEN)
#endif
#if PLUGIN_ENABLED_STATIC(SAGA)
LINK_PLUGIN(SAGA)
#endif
#if PLUGIN_ENABLED_STATIC(SCI)
LINK_PLUGIN(SCI)
#endif
#if PLUGIN_ENABLED_STATIC(SKY)
LINK_PLUGIN(SKY)
#endif
#if PLUGIN_ENABLED_STATIC(SWORD1)
LINK_PLUGIN(SWORD1)
#endif
#if PLUGIN_ENABLED_STATIC(SWORD2)
LINK_PLUGIN(SWORD2)
#endif
#if PLUGIN_ENABLED_STATIC(SWORD25)
LINK_PLUGIN(SWORD25)
#endif
#if PLUGIN_ENABLED_STATIC(TEENAGENT)
LINK_PLUGIN(TEENAGENT)
#endif
#if PLUGIN_ENABLED_STATIC(TESTBED)
LINK_PLUGIN(TESTBED)
#endif
#if PLUGIN_ENABLED_STATIC(TINSEL)
LINK_PLUGIN(TINSEL)
#endif
#if PLUGIN_ENABLED_STATIC(TOON)
LINK_PLUGIN(TOON)
#endif
#if PLUGIN_ENABLED_STATIC(TOUCHE)
LINK_PLUGIN(TOUCHE)
#endif
#if PLUGIN_ENABLED_STATIC(TUCKER)
LINK_PLUGIN(TUCKER)
#endif
// Music plugins
// TODO: Use defines to disable or enable each MIDI driver as a
// static/dynamic plugin, like it's done for the engines
LINK_PLUGIN(AUTO)
LINK_PLUGIN(NULL)
#if defined(WIN32) && !defined(_WIN32_WCE) && !defined(__SYMBIAN32__)
LINK_PLUGIN(WINDOWS)
#endif
#if defined(USE_ALSA)
LINK_PLUGIN(ALSA)
#endif
#if defined(USE_SEQ_MIDI)
LINK_PLUGIN(SEQ)
#endif
#if defined(__MINT__)
LINK_PLUGIN(STMIDI)
#endif
#if defined(IRIX)
LINK_PLUGIN(DMEDIA)
#endif
#if defined(__amigaos4__)
LINK_PLUGIN(CAMD)
#endif
#if defined(MACOSX)
LINK_PLUGIN(COREAUDIO)
LINK_PLUGIN(COREMIDI)
#endif
#ifdef USE_FLUIDSYNTH
LINK_PLUGIN(FLUIDSYNTH)
#endif
#ifdef USE_MT32EMU
LINK_PLUGIN(MT32)
#endif
LINK_PLUGIN(ADLIB)
LINK_PLUGIN(PCSPK)
LINK_PLUGIN(PCJR)
LINK_PLUGIN(CMS)
#ifndef DISABLE_SID
LINK_PLUGIN(C64)
#endif
LINK_PLUGIN(AMIGA)
LINK_PLUGIN(APPLEIIGS)
LINK_PLUGIN(TOWNS)
#if defined(USE_TIMIDITY)
LINK_PLUGIN(TIMIDITY)
#endif
return pl;
}
};
#ifdef DYNAMIC_MODULES
PluginList FilePluginProvider::getPlugins() {
PluginList pl;
// Prepare the list of directories to search
Common::FSList pluginDirs;
// Add the default directories
pluginDirs.push_back(Common::FSNode("."));
pluginDirs.push_back(Common::FSNode("plugins"));
// Add the provider's custom directories
addCustomDirectories(pluginDirs);
// Add the user specified directory
Common::String pluginsPath(ConfMan.get("pluginspath"));
if (!pluginsPath.empty())
pluginDirs.push_back(Common::FSNode(pluginsPath));
Common::FSList::const_iterator dir;
for (dir = pluginDirs.begin(); dir != pluginDirs.end(); ++dir) {
// Load all plugins.
// Scan for all plugins in this directory
Common::FSList files;
if (!dir->getChildren(files, Common::FSNode::kListFilesOnly)) {
debug(1, "Couldn't open plugin directory '%s'", dir->getPath().c_str());
continue;
} else {
debug(1, "Reading plugins from plugin directory '%s'", dir->getPath().c_str());
}
for (Common::FSList::const_iterator i = files.begin(); i != files.end(); ++i) {
if (isPluginFilename(*i)) {
pl.push_back(createPlugin(*i));
}
}
}
return pl;
}
bool FilePluginProvider::isPluginFilename(const Common::FSNode &node) const {
Common::String filename = node.getName();
#ifdef PLUGIN_PREFIX
// Check the plugin prefix
if (!filename.hasPrefix(PLUGIN_PREFIX))
return false;
#endif
#ifdef PLUGIN_SUFFIX
// Check the plugin suffix
if (!filename.hasSuffix(PLUGIN_SUFFIX))
return false;
#endif
return true;
}
void FilePluginProvider::addCustomDirectories(Common::FSList &dirs) const {
#ifdef PLUGIN_DIRECTORY
dirs.push_back(Common::FSNode(PLUGIN_DIRECTORY));
#endif
}
#endif // DYNAMIC_MODULES
#pragma mark -
DECLARE_SINGLETON(PluginManager)
PluginManager::PluginManager() {
// Always add the static plugin provider.
addPluginProvider(new StaticPluginProvider());
_skipStaticPlugs = false;
}
PluginManager::~PluginManager() {
// Explicitly unload all loaded plugins
unloadPlugins();
// Delete the plugin providers
for (ProviderList::iterator pp = _providers.begin();
pp != _providers.end();
++pp) {
delete *pp;
}
}
void PluginManager::addPluginProvider(PluginProvider *pp) {
_providers.push_back(pp);
}
void PluginManager::loadFirstPlugin() { //TODO: rename? It's not quite clear that this loads all non-engine plugins and first engine plugin.
unloadPluginsExcept(PLUGIN_TYPE_ENGINE, NULL);
_allPlugs.clear();
for (ProviderList::iterator pp = _providers.begin();
pp != _providers.end();
++pp) {
if ((_skipStaticPlugs && (*pp)->isFilePluginProvider()) || !_skipStaticPlugs) {
PluginList pl((*pp)->getPlugins());
for (PluginList::iterator p = pl.begin(); p != pl.end(); ++p) {
_allPlugs.push_back(*p);
}
}
}
_nonEnginePlugs = 0;
_skipStaticPlugs = true; //Only need to load static plugins once.
_currentPlugin = _allPlugs.begin();
if (_allPlugs.empty()) {
return; //return here if somehow there are no plugins to load.
}
//this loop is for loading all non-engine plugins and the first engine plugin.
for (; _currentPlugin != _allPlugs.end(); ++_currentPlugin) {
if (!tryLoadPlugin(*_currentPlugin))
continue;
// TODO: This assumes all non-engine plugins will precede the first engine plugin!
if ((*_currentPlugin)->getType() == PLUGIN_TYPE_ENGINE)
break;
_nonEnginePlugs++;
}
return;
}
bool PluginManager::loadNextPlugin() {
if (_nonEnginePlugs == _allPlugs.size())
return false; //There are no Engine Plugins in this case.
// To ensure only one engine plugin is loaded at a time, we unload all engine plugins before trying to load a new one.
unloadPluginsExcept(PLUGIN_TYPE_ENGINE, NULL);
++_currentPlugin;
for (; _currentPlugin != _allPlugs.end(); ++_currentPlugin)
if (tryLoadPlugin(*_currentPlugin))
return true;
loadFirstPlugin();
return false;
}
void PluginManager::loadPlugins() {
for (ProviderList::iterator pp = _providers.begin();
pp != _providers.end();
++pp) {
PluginList pl((*pp)->getPlugins());
Common::for_each(pl.begin(), pl.end(), Common::bind1st(Common::mem_fun(&PluginManager::tryLoadPlugin), this));
}
}
void PluginManager::unloadPlugins() {
for (int i = 0; i < PLUGIN_TYPE_MAX; i++)
unloadPluginsExcept((PluginType)i, NULL);
}
void PluginManager::unloadPluginsExcept(PluginType type, const Plugin *plugin) {
Plugin *found = NULL;
for (PluginList::iterator p = _plugins[type].begin(); p != _plugins[type].end(); ++p) {
if (*p == plugin) {
found = *p;
} else {
(*p)->unloadPlugin();
delete *p;
}
}
_plugins[type].clear();
if (found != NULL) {
_plugins[type].push_back(found);
}
}
bool PluginManager::tryLoadPlugin(Plugin *plugin) {
assert(plugin);
// Try to load the plugin
if (plugin->loadPlugin()) {
// The plugin is valid, see if it provides the same module as an
// already loaded one and should replace it.
bool found = false;
PluginList::iterator pl = _plugins[plugin->getType()].begin();
while (!found && pl != _plugins[plugin->getType()].end()) {
if (!strcmp(plugin->getName(), (*pl)->getName())) {
// Found a duplicated module. Replace the old one.
found = true;
delete *pl;
*pl = plugin;
debug(1, "Replaced the duplicated plugin: '%s'", plugin->getName());
}
pl++;
}
if (!found) {
// If it provides a new module, just add it to the list of known plugins.
_plugins[plugin->getType()].push_back(plugin);
}
return true;
} else {
// Failed to load the plugin
delete plugin;
return false;
}
}
// Engine plugins
#include "engines/metaengine.h"
DECLARE_SINGLETON(EngineManager)
GameDescriptor EngineManager::findGameOnePlugAtATime(const Common::String &gameName, const EnginePlugin **plugin) const {
GameDescriptor result;
//PluginManager::instance().loadFirstPlugin();
do {
result = findGame(gameName, plugin);
if (!result.gameid().empty()) {
break;
}
} while (PluginManager::instance().loadNextPlugin());
return result;
}
GameDescriptor EngineManager::findGame(const Common::String &gameName, const EnginePlugin **plugin) const {
// Find the GameDescriptor for this target
const EnginePlugin::List &plugins = getPlugins();
GameDescriptor result;
if (plugin)
*plugin = 0;
EnginePlugin::List::const_iterator iter;
for (iter = plugins.begin(); iter != plugins.end(); ++iter) {
result = (**iter)->findGame(gameName.c_str());
if (!result.gameid().empty()) {
if (plugin)
*plugin = *iter;
return result;
}
}
return result;
}
GameList EngineManager::detectGames(const Common::FSList &fslist) const {
GameList candidates;
EnginePlugin::List plugins;
EnginePlugin::List::const_iterator iter;
#if defined(ONE_PLUGIN_AT_A_TIME) && defined(DYNAMIC_MODULES)
do {
#endif
plugins = getPlugins();
// Iterate over all known games and for each check if it might be
// the game in the presented directory.
for (iter = plugins.begin(); iter != plugins.end(); ++iter) {
candidates.push_back((**iter)->detectGames(fslist));
}
#if defined(ONE_PLUGIN_AT_A_TIME) && defined(DYNAMIC_MODULES)
} while (PluginManager::instance().loadNextPlugin());
#endif
return candidates;
}
const EnginePlugin::List &EngineManager::getPlugins() const {
return (const EnginePlugin::List &)PluginManager::instance().getPlugins(PLUGIN_TYPE_ENGINE);
}
// Music plugins
#include "sound/musicplugin.h"
DECLARE_SINGLETON(MusicManager)
const MusicPlugin::List &MusicManager::getPlugins() const {
return (const MusicPlugin::List &)PluginManager::instance().getPlugins(PLUGIN_TYPE_MUSIC);
}
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