/*
* Helper function to determine pre-calculated offset to certain joystick mappings
*/
ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
{
SDL_JoystickGUID jGUID = SDL_JoystickGetDeviceGUID(device_index);
ControllerMapping_t *mapping;
mapping = SDL_PrivateGetControllerMappingForGUID(&jGUID);
#if SDL_JOYSTICK_XINPUT
if (!mapping && SDL_SYS_IsXInputGamepad_DeviceIndex(device_index)) {
mapping = s_pXInputMapping;
}
#endif
#if defined(SDL_JOYSTICK_EMSCRIPTEN)
if (!mapping && s_pEmscriptenMapping) {
mapping = s_pEmscriptenMapping;
}
#endif
if (!mapping) {
const char *name = SDL_JoystickNameForIndex(device_index);
if (name) {
if (SDL_strstr(name, "Xbox") || SDL_strstr(name, "X-Box")) {
mapping = s_pXInputMapping;
}
}
}
return mapping;
}
/*
* Add or update an entry into the Mappings Database
*/
int
SDL_GameControllerAddMapping(const char *mappingString)
{
char *pchGUID;
char *pchName;
char *pchMapping;
SDL_JoystickGUID jGUID;
ControllerMapping_t *pControllerMapping;
SDL_bool is_xinput_mapping = SDL_FALSE;
pchGUID = SDL_PrivateGetControllerGUIDFromMappingString(mappingString);
if (!pchGUID) {
return SDL_SetError("Couldn't parse GUID from %s", mappingString);
}
if (!SDL_strcasecmp(pchGUID, "xinput")) {
is_xinput_mapping = SDL_TRUE;
}
jGUID = SDL_JoystickGetGUIDFromString(pchGUID);
SDL_free(pchGUID);
pchName = SDL_PrivateGetControllerNameFromMappingString(mappingString);
if (!pchName) {
return SDL_SetError("Couldn't parse name from %s", mappingString);
}
pchMapping = SDL_PrivateGetControllerMappingFromMappingString(mappingString);
if (!pchMapping) {
SDL_free(pchName);
return SDL_SetError("Couldn't parse %s", mappingString);
}
pControllerMapping = SDL_PrivateGetControllerMappingForGUID(&jGUID);
if (pControllerMapping) {
/* Update existing mapping */
SDL_free(pControllerMapping->name);
pControllerMapping->name = pchName;
SDL_free(pControllerMapping->mapping);
pControllerMapping->mapping = pchMapping;
/* refresh open controllers */
SDL_PrivateGameControllerRefreshMapping(pControllerMapping);
return 0;
} else {
pControllerMapping = SDL_malloc(sizeof(*pControllerMapping));
if (!pControllerMapping) {
SDL_free(pchName);
SDL_free(pchMapping);
return SDL_OutOfMemory();
}
if (is_xinput_mapping) {
s_pXInputMapping = pControllerMapping;
}
pControllerMapping->guid = jGUID;
pControllerMapping->name = pchName;
pControllerMapping->mapping = pchMapping;
pControllerMapping->next = s_pSupportedControllers;
s_pSupportedControllers = pControllerMapping;
return 1;
}
}
/*
* Helper function to add a mapping for a guid
*/
static ControllerMapping_t *
SDL_PrivateAddMappingForGUID(SDL_JoystickGUID jGUID, const char *mappingString, SDL_bool *existing, SDL_ControllerMappingPriority priority)
{
char *pchName;
char *pchMapping;
ControllerMapping_t *pControllerMapping;
pchName = SDL_PrivateGetControllerNameFromMappingString(mappingString);
if (!pchName) {
SDL_SetError("Couldn't parse name from %s", mappingString);
return NULL;
}
pchMapping = SDL_PrivateGetControllerMappingFromMappingString(mappingString);
if (!pchMapping) {
SDL_free(pchName);
SDL_SetError("Couldn't parse %s", mappingString);
return NULL;
}
pControllerMapping = SDL_PrivateGetControllerMappingForGUID(&jGUID);
if (pControllerMapping) {
/* Only overwrite the mapping if the priority is the same or higher. */
if (pControllerMapping->priority <= priority) {
/* Update existing mapping */
SDL_free(pControllerMapping->name);
pControllerMapping->name = pchName;
SDL_free(pControllerMapping->mapping);
pControllerMapping->mapping = pchMapping;
pControllerMapping->priority = priority;
/* refresh open controllers */
SDL_PrivateGameControllerRefreshMapping(pControllerMapping);
}
*existing = SDL_TRUE;
} else {
pControllerMapping = SDL_malloc(sizeof(*pControllerMapping));
if (!pControllerMapping) {
SDL_free(pchName);
SDL_free(pchMapping);
SDL_OutOfMemory();
return NULL;
}
pControllerMapping->guid = jGUID;
pControllerMapping->name = pchName;
pControllerMapping->mapping = pchMapping;
pControllerMapping->next = s_pSupportedControllers;
pControllerMapping->priority = priority;
s_pSupportedControllers = pControllerMapping;
*existing = SDL_FALSE;
}
return pControllerMapping;
}
/*
* Helper function to determine pre-calculated offset to certain joystick mappings
*/
ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
{
#if defined(SDL_JOYSTICK_DINPUT) || defined(SDL_JOYSTICK_XINPUT)
if (SDL_SYS_IsXInputDeviceIndex(device_index) && s_pXInputMapping) {
return s_pXInputMapping;
}
else
#endif
{
SDL_JoystickGUID jGUID = SDL_JoystickGetDeviceGUID(device_index);
return SDL_PrivateGetControllerMappingForGUID(&jGUID);
}
}
/*
* Helper function to determine pre-calculated offset to certain joystick mappings
*/
ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
{
#if SDL_JOYSTICK_XINPUT
if (SDL_SYS_IsXInputGamepad_DeviceIndex(device_index) && s_pXInputMapping) {
return s_pXInputMapping;
}
else
#endif /* SDL_JOYSTICK_XINPUT */
{
SDL_JoystickGUID jGUID = SDL_JoystickGetDeviceGUID(device_index);
return SDL_PrivateGetControllerMappingForGUID(&jGUID);
}
}
/*
* Get the mapping string for this GUID
*/
char *
SDL_GameControllerMappingForGUID( SDL_JoystickGUID guid )
{
char *pMappingString = NULL;
ControllerMapping_t *mapping = SDL_PrivateGetControllerMappingForGUID(&guid);
if (mapping) {
char pchGUID[33];
size_t needed;
SDL_JoystickGetGUIDString(guid, pchGUID, sizeof(pchGUID));
/* allocate enough memory for GUID + ',' + name + ',' + mapping + \0 */
needed = SDL_strlen(pchGUID) + 1 + SDL_strlen(mapping->name) + 1 + SDL_strlen(mapping->mapping) + 1;
pMappingString = SDL_malloc( needed );
SDL_snprintf( pMappingString, needed, "%s,%s,%s", pchGUID, mapping->name, mapping->mapping );
}
return pMappingString;
}
/*
* Helper function to determine pre-calculated offset to certain joystick mappings
*/
ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
{
#if SDL_JOYSTICK_XINPUT
if (SDL_SYS_IsXInputGamepad_DeviceIndex(device_index) && s_pXInputMapping) {
return s_pXInputMapping;
}
else
#endif
#if defined(SDL_JOYSTICK_EMSCRIPTEN)
if (s_pEmscriptenMapping) {
return s_pEmscriptenMapping;
}
else
#endif
{
SDL_JoystickGUID jGUID = SDL_JoystickGetDeviceGUID(device_index);
return SDL_PrivateGetControllerMappingForGUID(&jGUID);
}
}
/*
* Helper function to determine pre-calculated offset to certain joystick mappings
*/
static ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
{
SDL_JoystickGUID jGUID = SDL_JoystickGetDeviceGUID(device_index);
ControllerMapping_t *mapping;
mapping = SDL_PrivateGetControllerMappingForGUID(&jGUID);
#if SDL_JOYSTICK_XINPUT
if (!mapping && SDL_SYS_IsXInputGamepad_DeviceIndex(device_index)) {
mapping = s_pXInputMapping;
}
#endif
#if defined(SDL_JOYSTICK_EMSCRIPTEN)
if (!mapping && s_pEmscriptenMapping) {
mapping = s_pEmscriptenMapping;
}
#endif
#ifdef __LINUX__
if (!mapping) {
const char *name = SDL_JoystickNameForIndex(device_index);
if (name) {
if (SDL_strstr(name, "Xbox 360 Wireless Receiver")) {
/* The Linux driver xpad.c maps the wireless dpad to buttons */
SDL_bool existing;
mapping = SDL_PrivateAddMappingForGUID(jGUID,
"none,X360 Wireless Controller,a:b0,b:b1,back:b6,dpdown:b14,dpleft:b11,dpright:b12,dpup:b13,guide:b8,leftshoulder:b4,leftstick:b9,lefttrigger:a2,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b10,righttrigger:a5,rightx:a3,righty:a4,start:b7,x:b2,y:b3,",
&existing, SDL_CONTROLLER_MAPPING_PRIORITY_DEFAULT);
}
}
}
#endif /* __LINUX__ */
if (!mapping) {
const char *name = SDL_JoystickNameForIndex(device_index);
if (name) {
if (SDL_strstr(name, "Xbox") || SDL_strstr(name, "X-Box")) {
mapping = s_pXInputMapping;
}
}
}
return mapping;
}
