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Location: cpp/openttd-patchpack/source/src/driver.h - annotation
r9010:56ff6c523703
1.7 KiB
text/x-c
(svn r12805) -Codechange: remove some bit magic related to the news display states. Patch by cirdan.
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/** @file driver.h */
#ifndef DRIVER_H
#define DRIVER_H
#include "debug.h"
#include "core/enum_type.hpp"
#include "string_func.h"
#include <string>
#include <map>
bool GetDriverParamBool(const char * const *parm, const char *name);
int GetDriverParamInt(const char * const *parm, const char *name, int def);
class Driver {
public:
virtual const char *Start(const char * const *parm) = 0;
virtual void Stop() = 0;
virtual ~Driver() { }
enum Type {
DT_BEGIN = 0,
DT_SOUND = 0,
DT_MUSIC,
DT_VIDEO,
DT_END,
};
};
DECLARE_POSTFIX_INCREMENT(Driver::Type);
class DriverFactoryBase {
private:
Driver::Type type;
char *name;
int priority;
typedef std::map<std::string, DriverFactoryBase *> Drivers;
static Drivers &GetDrivers()
{
static Drivers &s_drivers = *new Drivers();
return s_drivers;
}
static Driver **GetActiveDriver(Driver::Type type)
{
static Driver *s_driver[3] = { NULL, NULL, NULL };
return &s_driver[type];
}
static const char *GetDriverTypeName(Driver::Type type)
{
static const char *driver_type_name[] = { "sound", "music", "video" };
return driver_type_name[type];
}
protected:
void RegisterDriver(const char *name, Driver::Type type, int priority);
public:
DriverFactoryBase() :
name(NULL)
{}
virtual ~DriverFactoryBase() { if (this->name != NULL) GetDrivers().erase(this->name); free(this->name); }
static const Driver *SelectDriver(const char *name, Driver::Type type);
static char *GetDriversInfo(char *p, const char *last);
/**
* Get a nice description of the driver-class.
*/
virtual const char *GetDescription() = 0;
/**
* Create an instance of this driver-class.
*/
virtual Driver *CreateInstance() = 0;
};
#endif /* DRIVER_H */
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