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Location: cpp/openttd-patchpack/source/src/driver.h - annotation
r12162:c4894f5339c3
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(svn r16583) -Update: the order of the language files so it's in sync with english.txt. Normally WT2 would do this, but only with activity for those languages. Now we'd like to the order to match so we can more easily spot import bugs while developing WT3.
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/** @file driver.h Base for all drivers (video, sound, music, etc). */
#ifndef DRIVER_H
#define DRIVER_H
#include "core/enum_type.hpp"
#include "core/string_compare_type.hpp"
#include "string_func.h"
#include <map>
const char *GetDriverParam(const char * const *parm, const char *name);
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;
const char *name;
int priority;
typedef std::map<const char *, DriverFactoryBase *, StringCompare> 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();
/** Shuts down all active drivers
*/
static void ShutdownDrivers()
{
for (Driver::Type dt = Driver::DT_BEGIN; dt < Driver::DT_END; dt++) {
Driver *driver = *GetActiveDriver(dt);
if (driver != NULL) driver->Stop();
}
}
static 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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