author | Tero Marttila <terom@fixme.fi> |
Fri, 18 Jul 2008 21:59:53 +0300 | |
changeset 11176 | 874f8008e6e5 |
parent 11062 | 19abd15f7cf8 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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/** @file factory.hpp Factory to 'query' all available blitters. */ |
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#ifndef BLITTER_FACTORY_HPP |
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#define BLITTER_FACTORY_HPP |
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#include "base.hpp" |
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#include "../debug.h" |
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#include "../string_func.h" |
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#include <map> |
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/** |
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* The base factory, keeping track of all blitters. |
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*/ |
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class BlitterFactoryBase { |
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private: |
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const char *name; |
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struct StringCompare { |
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bool operator () (const char *a, const char *b) const |
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{ |
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return strcmp(a, b) < 0; |
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} |
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}; |
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typedef std::map<const char *, BlitterFactoryBase *, StringCompare> Blitters; |
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static Blitters &GetBlitters() |
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{ |
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static Blitters &s_blitters = *new Blitters(); |
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return s_blitters; |
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} |
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static Blitter **GetActiveBlitter() |
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{ |
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static Blitter *s_blitter = NULL; |
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return &s_blitter; |
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} |
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protected: |
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/** |
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* Register a blitter internally, based on his name. |
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* @param name the name of the blitter. |
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* @note an assert() will be trigger if 2 blitters with the same name try to register. |
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*/ |
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void RegisterBlitter(const char *name) |
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{ |
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/* Don't register nameless Blitters */ |
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if (name == NULL) return; |
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this->name = strdup(name); |
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std::pair<Blitters::iterator, bool> P = GetBlitters().insert(Blitters::value_type(name, this)); |
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assert(P.second); |
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} |
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public: |
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BlitterFactoryBase() : |
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name(NULL) |
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{} |
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virtual ~BlitterFactoryBase() |
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{ |
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if (this->name == NULL) return; |
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GetBlitters().erase(this->name); |
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if (GetBlitters().empty()) delete &GetBlitters(); |
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free((void *)this->name); |
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} |
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/** |
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* Find the requested blitter and return his class. |
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* @param name the blitter to select. |
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* @post Sets the blitter so GetCurrentBlitter() returns it too. |
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*/ |
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static Blitter *SelectBlitter(const char *name) |
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{ |
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const char *default_blitter = "8bpp-optimized"; |
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#if defined(__APPLE__) |
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/* MacOS X 10.5 removed 8bpp fullscreen support. |
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* Because of this we will pick 32bpp by default */ |
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if (MacOSVersionIsAtLeast(10, 5, 0)) { |
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default_blitter = "32bpp-anim"; |
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} |
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#endif /* defined(__APPLE__) */ |
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if (GetBlitters().size() == 0) return NULL; |
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const char *bname = (StrEmpty(name)) ? default_blitter : name; |
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Blitters::iterator it = GetBlitters().begin(); |
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for (; it != GetBlitters().end(); it++) { |
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BlitterFactoryBase *b = (*it).second; |
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if (strcasecmp(bname, b->name) == 0) { |
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Blitter *newb = b->CreateInstance(); |
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delete *GetActiveBlitter(); |
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*GetActiveBlitter() = newb; |
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DEBUG(driver, 1, "Successfully %s blitter '%s'",StrEmpty(name) ? "probed" : "loaded", bname); |
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return newb; |
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} |
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} |
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return NULL; |
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} |
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/** |
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* Get the current active blitter (always set by calling SelectBlitter). |
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*/ |
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static Blitter *GetCurrentBlitter() |
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{ |
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return *GetActiveBlitter(); |
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} |
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112 |
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113 |
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static char *GetBlittersInfo(char *p, const char *last) |
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115 |
{ |
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p += snprintf(p, last - p, "List of blitters:\n"); |
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Blitters::iterator it = GetBlitters().begin(); |
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for (; it != GetBlitters().end(); it++) { |
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BlitterFactoryBase *b = (*it).second; |
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p += snprintf(p, last - p, "%18s: %s\n", b->name, b->GetDescription()); |
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} |
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p += snprintf(p, last - p, "\n"); |
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123 |
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return p; |
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} |
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126 |
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127 |
/** |
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* Get a nice description of the blitter-class. |
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*/ |
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virtual const char *GetDescription() = 0; |
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131 |
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132 |
/** |
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* Create an instance of this Blitter-class. |
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*/ |
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virtual Blitter *CreateInstance() = 0; |
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}; |
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137 |
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138 |
/** |
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* A template factory, so ->GetName() works correctly. This because else some compiler will complain. |
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140 |
*/ |
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template <class T> |
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class BlitterFactory: public BlitterFactoryBase { |
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143 |
public: |
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BlitterFactory() { this->RegisterBlitter(((T *)this)->GetName()); } |
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145 |
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146 |
/** |
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* Get the long, human readable, name for the Blitter-class. |
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*/ |
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const char *GetName(); |
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}; |
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151 |
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extern char _ini_blitter[32]; |
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153 |
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7433
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#endif /* BLITTER_FACTORY_HPP */ |