author | truebrain |
Sun, 15 Jun 2008 22:37:35 +0000 | |
branch | noai |
changeset 10972 | 986675d19245 |
parent 10920 | e33442a2b239 |
child 11044 | 097ea3e7ec56 |
permissions | -rw-r--r-- |
2186 | 1 |
/* $Id$ */ |
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/** @file driver.cpp Base for all driver handling. */ |
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#include "stdafx.h" |
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#include "openttd.h" |
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#include "debug.h" |
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#include "driver.h" |
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#include "sound/sound_driver.hpp" |
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#include "music/music_driver.hpp" |
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#include "video/video_driver.hpp" |
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VideoDriver *_video_driver; |
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char _ini_videodriver[32]; |
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int _num_resolutions; |
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uint16 _resolutions[32][2]; |
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uint16 _cur_resolution[2]; |
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SoundDriver *_sound_driver; |
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char _ini_sounddriver[32]; |
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MusicDriver *_music_driver; |
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char _ini_musicdriver[32]; |
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char _ini_blitter[32]; |
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static const char* GetDriverParam(const char* const* parm, const char* name) |
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{ |
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size_t len; |
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if (parm == NULL) return NULL; |
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len = strlen(name); |
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for (; *parm != NULL; parm++) { |
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const char* p = *parm; |
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if (strncmp(p, name, len) == 0) { |
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if (p[len] == '=') return p + len + 1; |
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if (p[len] == '\0') return p + len; |
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} |
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} |
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return NULL; |
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} |
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bool GetDriverParamBool(const char* const* parm, const char* name) |
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{ |
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return GetDriverParam(parm, name) != NULL; |
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} |
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int GetDriverParamInt(const char* const* parm, const char* name, int def) |
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{ |
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const char* p = GetDriverParam(parm, name); |
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return p != NULL ? atoi(p) : def; |
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} |
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/** |
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* Find the requested driver and return its class. |
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* @param name the driver to select. |
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* @post Sets the driver so GetCurrentDriver() returns it too. |
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*/ |
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const Driver *DriverFactoryBase::SelectDriver(const char *name, Driver::Type type) |
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{ |
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if (GetDrivers().size() == 0) return NULL; |
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if (*name == '\0') { |
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/* Probe for this driver */ |
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for (int priority = 10; priority >= 0; priority--) { |
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Drivers::iterator it = GetDrivers().begin(); |
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for (; it != GetDrivers().end(); ++it) { |
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DriverFactoryBase *d = (*it).second; |
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/* Check driver type */ |
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if (d->type != type) continue; |
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if (d->priority != priority) continue; |
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Driver *newd = d->CreateInstance(); |
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const char *err = newd->Start(NULL); |
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if (err == NULL) { |
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DEBUG(driver, 1, "Successfully probed %s driver '%s'", GetDriverTypeName(type), d->name); |
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delete *GetActiveDriver(type); |
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*GetActiveDriver(type) = newd; |
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return newd; |
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} |
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DEBUG(driver, 1, "Probing %s driver '%s' failed with error: %s", GetDriverTypeName(type), d->name, err); |
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delete newd; |
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} |
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} |
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usererror("Couldn't find any suitable %s driver", GetDriverTypeName(type)); |
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} else { |
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char *parm; |
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char buffer[256]; |
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const char *parms[32]; |
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/* Extract the driver name and put parameter list in parm */ |
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strecpy(buffer, name, lastof(buffer)); |
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parm = strchr(buffer, ':'); |
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parms[0] = NULL; |
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if (parm != NULL) { |
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uint np = 0; |
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/* Tokenize the parm. */ |
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do { |
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*parm++ = '\0'; |
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if (np < lengthof(parms) - 1) parms[np++] = parm; |
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while (*parm != '\0' && *parm != ',') parm++; |
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} while (*parm == ','); |
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parms[np] = NULL; |
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} |
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/* Find this driver */ |
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Drivers::iterator it = GetDrivers().begin(); |
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for (; it != GetDrivers().end(); ++it) { |
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DriverFactoryBase *d = (*it).second; |
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116 |
/* Check driver type */ |
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117 |
if (d->type != type) continue; |
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118 |
|
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119 |
/* Check driver name */ |
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if (strcasecmp(buffer, d->name) != 0) continue; |
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121 |
|
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122 |
/* Found our driver, let's try it */ |
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123 |
Driver *newd = d->CreateInstance(); |
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124 |
|
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125 |
const char *err = newd->Start(parms); |
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126 |
if (err != NULL) { |
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127 |
delete newd; |
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128 |
usererror("Unable to load driver '%s'. The error was: %s", d->name, err); |
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129 |
} |
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130 |
|
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131 |
DEBUG(driver, 1, "Successfully loaded %s driver '%s'", GetDriverTypeName(type), d->name); |
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132 |
delete *GetActiveDriver(type); |
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133 |
*GetActiveDriver(type) = newd; |
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134 |
return newd; |
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135 |
} |
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usererror("No such %s driver: %s\n", GetDriverTypeName(type), buffer); |
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137 |
} |
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138 |
} |
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139 |
|
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140 |
/** |
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141 |
* Register a driver internally, based on its name. |
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* @param name the name of the driver. |
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* @note an assert() will be trigger if 2 driver with the same name try to register. |
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144 |
*/ |
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145 |
void DriverFactoryBase::RegisterDriver(const char *name, Driver::Type type, int priority) |
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146 |
{ |
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147 |
/* Don't register nameless Drivers */ |
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148 |
if (name == NULL) return; |
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149 |
|
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150 |
this->name = strdup(name); |
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151 |
this->type = type; |
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152 |
this->priority = priority; |
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153 |
|
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154 |
/* Prefix the name with driver type to make it unique */ |
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155 |
char buf[32]; |
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156 |
strecpy(buf, GetDriverTypeName(type), lastof(buf)); |
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157 |
strecpy(buf + 5, name, lastof(buf)); |
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158 |
|
10829 | 159 |
std::pair<Drivers::iterator, bool> P = GetDrivers().insert(Drivers::value_type(buf, this)); |
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160 |
assert(P.second); |
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161 |
} |
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162 |
|
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163 |
/** |
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164 |
* Build a human readable list of available drivers, grouped by type. |
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165 |
*/ |
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166 |
char *DriverFactoryBase::GetDriversInfo(char *p, const char *last) |
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167 |
{ |
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168 |
for (Driver::Type type = Driver::DT_BEGIN; type != Driver::DT_END; type++) { |
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169 |
p += snprintf(p, last - p, "List of %s drivers:\n", GetDriverTypeName(type)); |
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170 |
|
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171 |
for (int priority = 10; priority >= 0; priority--) { |
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172 |
Drivers::iterator it = GetDrivers().begin(); |
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173 |
for (; it != GetDrivers().end(); it++) { |
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174 |
DriverFactoryBase *d = (*it).second; |
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175 |
if (d->type != type) continue; |
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176 |
if (d->priority != priority) continue; |
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177 |
p += snprintf(p, last - p, "%18s: %s\n", d->name, d->GetDescription()); |
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178 |
} |
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179 |
} |
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180 |
|
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181 |
p += snprintf(p, last - p, "\n"); |
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182 |
} |
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183 |
|
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184 |
return p; |
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185 |
} |
10920 | 186 |
|
187 |
/** Frees memory used for this->name |
|
188 |
*/ |
|
189 |
DriverFactoryBase::~DriverFactoryBase() { |
|
190 |
if (this->name == NULL) return; |
|
191 |
||
192 |
/* Prefix the name with driver type to make it unique */ |
|
193 |
char buf[32]; |
|
194 |
strecpy(buf, GetDriverTypeName(type), lastof(buf)); |
|
195 |
strecpy(buf + 5, this->name, lastof(buf)); |
|
196 |
||
197 |
GetDrivers().erase(buf); |
|
198 |
if (GetDrivers().empty()) delete &GetDrivers(); |
|
199 |
free(this->name); |
|
200 |
} |