truelight@6937: /* $Id$ */
truelight@6937: 
rubidium@9111: /** @file factory.hpp Factory to 'query' all available blitters. */
rubidium@9111: 
truelight@6937: #ifndef BLITTER_FACTORY_HPP
truelight@6937: #define BLITTER_FACTORY_HPP
truelight@6937: 
truelight@6937: #include "base.hpp"
truelight@7568: #include "../debug.h"
rubidium@8214: #include "../string_func.h"
truelight@6937: #include <string>
truelight@6937: #include <map>
truelight@6937: 
truelight@6937: /**
truelight@6937:  * The base factory, keeping track of all blitters.
truelight@6937:  */
truelight@6937: class BlitterFactoryBase {
truelight@6937: private:
truelight@6937: 	char *name;
truelight@6937: 	typedef std::map<std::string, BlitterFactoryBase *> Blitters;
truelight@6937: 
truelight@6937: 	static Blitters &GetBlitters()
truelight@6937: 	{
truelight@6937: 		static Blitters &s_blitters = *new Blitters();
truelight@6937: 		return s_blitters;
truelight@6937: 	}
truelight@6937: 
truelight@6937: 	static Blitter **GetActiveBlitter()
truelight@6937: 	{
truelight@6937: 		static Blitter *s_blitter = NULL;
truelight@6937: 		return &s_blitter;
truelight@6937: 	}
truelight@6937: 
truelight@6937: protected:
truelight@6937: 	/**
truelight@6937: 	 * Register a blitter internally, based on his name.
truelight@6937: 	 * @param name the name of the blitter.
truelight@6937: 	 * @note an assert() will be trigger if 2 blitters with the same name try to register.
truelight@6937: 	 */
truelight@6937: 	void RegisterBlitter(const char *name)
truelight@6937: 	{
truelight@6937: 		/* Don't register nameless Blitters */
truelight@6937: 		if (name == NULL) return;
truelight@6937: 
truelight@6937: 		this->name = strdup(name);
smatz@9436: 
smatz@9436: 		std::pair<Blitters::iterator, bool> P = GetBlitters().insert(Blitters::value_type(name, this));
truelight@6937: 		assert(P.second);
truelight@6937: 	}
truelight@6937: 
truelight@6937: public:
truelight@6937: 	BlitterFactoryBase() :
truelight@6937: 		name(NULL)
truelight@6937: 	{}
truelight@6937: 
glx@9294: 	virtual ~BlitterFactoryBase()
glx@9294: 	{
glx@9294: 		if (this->name == NULL) return;
glx@9294: 		GetBlitters().erase(this->name);
glx@9294: 		if (GetBlitters().empty()) delete &GetBlitters();
glx@9294: 		free(this->name);
glx@9294: 	}
truelight@6937: 
truelight@6937: 	/**
truelight@6937: 	 * Find the requested blitter and return his class.
truelight@6937: 	 * @param name the blitter to select.
truelight@6937: 	 * @post Sets the blitter so GetCurrentBlitter() returns it too.
truelight@6937: 	 */
truelight@6937: 	static Blitter *SelectBlitter(const char *name)
truelight@6937: 	{
truelight@7567: 		const char *default_blitter = "8bpp-optimized";
truelight@7567: 
bjarni@9561: #if defined(__APPLE__)
bjarni@9561: 		/* MacOS X 10.5 removed 8bpp fullscreen support.
bjarni@9561: 		 * Because of this we will pick 32bpp by default */
bjarni@9561: 		if (MacOSVersionIsAtLeast(10, 5, 0)) {
bjarni@9561: 			default_blitter = "32bpp-anim";
bjarni@9561: 		}
bjarni@9561: #endif /* defined(__APPLE__) */
truelight@6937: 		if (GetBlitters().size() == 0) return NULL;
truelight@7567: 		const char *bname = (StrEmpty(name)) ? default_blitter : name;
truelight@6937: 
truelight@6937: 		Blitters::iterator it = GetBlitters().begin();
truelight@6937: 		for (; it != GetBlitters().end(); it++) {
truelight@6937: 			BlitterFactoryBase *b = (*it).second;
truelight@7567: 			if (strcasecmp(bname, b->name) == 0) {
truelight@6937: 				Blitter *newb = b->CreateInstance();
rubidium@7091: 				delete *GetActiveBlitter();
truelight@6937: 				*GetActiveBlitter() = newb;
truelight@7568: 
truelight@7568: 				DEBUG(driver, 1, "Successfully %s blitter '%s'",StrEmpty(name) ? "probed" : "loaded", bname);
truelight@6937: 				return newb;
truelight@6937: 			}
truelight@6937: 		}
truelight@6937: 		return NULL;
truelight@6937: 	}
truelight@6937: 
truelight@6937: 	/**
truelight@6937: 	 * Get the current active blitter (always set by calling SelectBlitter).
truelight@6937: 	 */
truelight@6937: 	static Blitter *GetCurrentBlitter()
truelight@6937: 	{
truelight@6937: 		return *GetActiveBlitter();
truelight@6937: 	}
truelight@6937: 
truelight@6937: 
truelight@6937: 	static char *GetBlittersInfo(char *p, const char *last)
truelight@6937: 	{
truelight@6937: 		p += snprintf(p, last - p, "List of blitters:\n");
truelight@6937: 		Blitters::iterator it = GetBlitters().begin();
truelight@6937: 		for (; it != GetBlitters().end(); it++) {
truelight@6937: 			BlitterFactoryBase *b = (*it).second;
truelight@6937: 			p += snprintf(p, last - p, "%18s: %s\n", b->name, b->GetDescription());
truelight@6937: 		}
truelight@6937: 		p += snprintf(p, last - p, "\n");
truelight@6937: 
truelight@6937: 		return p;
truelight@6937: 	}
truelight@6937: 
truelight@6937: 	/**
truelight@6937: 	 * Get a nice description of the blitter-class.
truelight@6937: 	 */
truelight@6937: 	virtual const char *GetDescription() = 0;
truelight@6937: 
truelight@6937: 	/**
truelight@6937: 	 * Create an instance of this Blitter-class.
truelight@6937: 	 */
truelight@6937: 	virtual Blitter *CreateInstance() = 0;
truelight@6937: };
truelight@6937: 
truelight@6937: /**
truelight@6937:  * A template factory, so ->GetName() works correctly. This because else some compiler will complain.
truelight@6937:  */
truelight@6937: template <class T>
truelight@6937: class BlitterFactory: public BlitterFactoryBase {
truelight@6937: public:
truelight@6937: 	BlitterFactory() { this->RegisterBlitter(((T *)this)->GetName()); }
truelight@6937: 
truelight@6937: 	/**
truelight@6937: 	 * Get the long, human readable, name for the Blitter-class.
truelight@6937: 	 */
truelight@6937: 	const char *GetName();
truelight@6937: };
truelight@6937: 
rubidium@8275: extern char _ini_blitter[32];
rubidium@8275: 
truelight@6937: #endif /* BLITTER_FACTORY_HPP */