mirror of
https://github.com/libsdl-org/SDL.git
synced 2025-05-21 20:28:28 +00:00
Added SDL hints to filter the set of game controllers reported by SDL
This commit is contained in:
Sam Lantinga
parent
dc40018438
commit
c49fa37c5b
8 changed files with 248 additions and 42 deletions
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@ -112,6 +112,74 @@ struct _SDL_GameController
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};
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typedef struct
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{
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int num_entries;
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int max_entries;
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Uint32 *entries;
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} SDL_vidpid_list;
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static SDL_vidpid_list SDL_allowed_controllers;
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static SDL_vidpid_list SDL_ignored_controllers;
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static void
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SDL_LoadVIDPIDListFromHint(const char *hint, SDL_vidpid_list *list)
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{
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Uint32 entry;
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char *spot;
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char *file = NULL;
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list->num_entries = 0;
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if (hint && *hint == '@') {
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spot = file = (char *)SDL_LoadFile(hint+1, NULL);
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} else {
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spot = (char *)hint;
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}
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if (!spot) {
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return;
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}
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while ((spot = SDL_strstr(spot, "0x")) != NULL) {
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entry = SDL_strtol(spot, &spot, 0);
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entry <<= 16;
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spot = SDL_strstr(spot, "0x");
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if (!spot) {
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break;
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}
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entry |= SDL_strtol(spot, &spot, 0);
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if (list->num_entries == list->max_entries) {
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int max_entries = list->max_entries + 16;
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Uint32 *entries = (Uint32 *)SDL_realloc(list->entries, max_entries*sizeof(*list->entries));
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if (entries == NULL) {
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/* Out of memory, go with what we have already */
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break;
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}
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list->entries = entries;
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list->max_entries = max_entries;
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}
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list->entries[list->num_entries++] = entry;
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}
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if (file) {
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SDL_free(file);
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}
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}
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static void
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SDL_GameControllerIgnoreDevicesChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
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{
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SDL_LoadVIDPIDListFromHint(hint, &SDL_ignored_controllers);
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}
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static void
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SDL_GameControllerIgnoreDevicesExceptChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
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{
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SDL_LoadVIDPIDListFromHint(hint, &SDL_allowed_controllers);
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}
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static int SDL_PrivateGameControllerAxis(SDL_GameController * gamecontroller, SDL_GameControllerAxis axis, Sint16 value);
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static int SDL_PrivateGameControllerButton(SDL_GameController * gamecontroller, SDL_GameControllerButton button, Uint8 state);
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@ -799,47 +867,48 @@ SDL_PrivateAddMappingForGUID(SDL_JoystickGUID jGUID, const char *mappingString,
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/*
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* Helper function to determine pre-calculated offset to certain joystick mappings
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*/
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static ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
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static ControllerMapping_t *SDL_PrivateGetControllerMappingForNameAndGUID(const char *name, SDL_JoystickGUID guid)
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{
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SDL_JoystickGUID jGUID = SDL_JoystickGetDeviceGUID(device_index);
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ControllerMapping_t *mapping;
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mapping = SDL_PrivateGetControllerMappingForGUID(&guid);
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#if defined(SDL_JOYSTICK_EMSCRIPTEN)
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if (!mapping && s_pEmscriptenMapping) {
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mapping = s_pEmscriptenMapping;
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}
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#else
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(void) s_pEmscriptenMapping; /* pacify ARMCC */
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#endif
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#ifdef __LINUX__
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if (!mapping && name) {
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if (SDL_strstr(name, "Xbox 360 Wireless Receiver")) {
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/* The Linux driver xpad.c maps the wireless dpad to buttons */
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SDL_bool existing;
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mapping = SDL_PrivateAddMappingForGUID(jGUID,
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"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,",
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&existing, SDL_CONTROLLER_MAPPING_PRIORITY_DEFAULT);
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}
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}
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#endif /* __LINUX__ */
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mapping = SDL_PrivateGetControllerMappingForGUID(&jGUID);
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if (!mapping && name) {
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if (SDL_strstr(name, "Xbox") || SDL_strstr(name, "X-Box")) {
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mapping = s_pXInputMapping;
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}
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}
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return mapping;
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}
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static ControllerMapping_t *SDL_PrivateGetControllerMapping(int device_index)
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{
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const char *name = SDL_JoystickNameForIndex(device_index);
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SDL_JoystickGUID guid = SDL_JoystickGetDeviceGUID(device_index);
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ControllerMapping_t *mapping = SDL_PrivateGetControllerMappingForNameAndGUID(name, guid);
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#if SDL_JOYSTICK_XINPUT
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if (!mapping && SDL_SYS_IsXInputGamepad_DeviceIndex(device_index)) {
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mapping = s_pXInputMapping;
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}
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#endif
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#if defined(SDL_JOYSTICK_EMSCRIPTEN)
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if (!mapping && s_pEmscriptenMapping) {
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mapping = s_pEmscriptenMapping;
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}
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#endif
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#ifdef __LINUX__
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if (!mapping) {
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const char *name = SDL_JoystickNameForIndex(device_index);
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if (name) {
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if (SDL_strstr(name, "Xbox 360 Wireless Receiver")) {
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/* The Linux driver xpad.c maps the wireless dpad to buttons */
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SDL_bool existing;
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mapping = SDL_PrivateAddMappingForGUID(jGUID,
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"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,",
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&existing, SDL_CONTROLLER_MAPPING_PRIORITY_DEFAULT);
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}
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}
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}
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#endif /* __LINUX__ */
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if (!mapping) {
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const char *name = SDL_JoystickNameForIndex(device_index);
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if (name) {
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if (SDL_strstr(name, "Xbox") || SDL_strstr(name, "X-Box")) {
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mapping = s_pXInputMapping;
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}
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}
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}
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return mapping;
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}
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@ -1092,7 +1161,7 @@ SDL_GameControllerLoadHints()
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* Initialize the game controller system, mostly load our DB of controller config mappings
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*/
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int
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SDL_GameControllerInit(void)
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SDL_GameControllerInitMappings(void)
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{
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int i = 0;
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const char *pMappingString = NULL;
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@ -1107,6 +1176,19 @@ SDL_GameControllerInit(void)
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/* load in any user supplied config */
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SDL_GameControllerLoadHints();
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SDL_AddHintCallback(SDL_HINT_GAMECONTROLLER_IGNORE_DEVICES,
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SDL_GameControllerIgnoreDevicesChanged, NULL);
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SDL_AddHintCallback(SDL_HINT_GAMECONTROLLER_IGNORE_DEVICES_EXCEPT,
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SDL_GameControllerIgnoreDevicesExceptChanged, NULL);
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return (0);
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}
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int
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SDL_GameControllerInit(void)
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{
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int i;
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/* watch for joy events and fire controller ones if needed */
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SDL_AddEventWatch(SDL_GameControllerEventWatcher, NULL);
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@ -1138,6 +1220,19 @@ SDL_GameControllerNameForIndex(int device_index)
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}
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/*
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* Return 1 if the joystick with this name and GUID is a supported controller
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*/
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SDL_bool
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SDL_IsGameControllerNameAndGUID(const char *name, SDL_JoystickGUID guid)
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{
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ControllerMapping_t *pSupportedController = SDL_PrivateGetControllerMappingForNameAndGUID(name, guid);
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if (pSupportedController) {
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return SDL_TRUE;
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}
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return SDL_FALSE;
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}
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/*
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* Return 1 if the joystick at this device index is a supported controller
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*/
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@ -1151,6 +1246,41 @@ SDL_IsGameController(int device_index)
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return SDL_FALSE;
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}
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/*
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* Return 1 if the game controller should be ignored by SDL
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*/
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SDL_bool SDL_ShouldIgnoreGameController(const char *name, SDL_JoystickGUID guid)
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{
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int i;
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Uint16 vendor;
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Uint16 product;
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Uint32 vidpid;
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if (SDL_allowed_controllers.num_entries == 0 &&
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SDL_ignored_controllers.num_entries == 0) {
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return SDL_FALSE;
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}
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SDL_GetJoystickGUIDInfo(guid, &vendor, &product, NULL);
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vidpid = MAKE_VIDPID(vendor, product);
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if (SDL_allowed_controllers.num_entries > 0) {
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for (i = 0; i < SDL_allowed_controllers.num_entries; ++i) {
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if (vidpid == SDL_allowed_controllers.entries[i]) {
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return SDL_FALSE;
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}
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}
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return SDL_TRUE;
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} else {
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for (i = 0; i < SDL_ignored_controllers.num_entries; ++i) {
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if (vidpid == SDL_ignored_controllers.entries[i]) {
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return SDL_TRUE;
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}
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}
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return SDL_FALSE;
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}
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}
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/*
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* Open a controller for use - the index passed as an argument refers to
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* the N'th controller on the system. This index is the value which will
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@ -1536,14 +1666,18 @@ SDL_GameControllerClose(SDL_GameController * gamecontroller)
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void
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SDL_GameControllerQuit(void)
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{
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ControllerMapping_t *pControllerMap;
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SDL_LockJoystickList();
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while (SDL_gamecontrollers) {
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SDL_gamecontrollers->ref_count = 1;
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SDL_GameControllerClose(SDL_gamecontrollers);
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}
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SDL_UnlockJoystickList();
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}
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void
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SDL_GameControllerQuitMappings(void)
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{
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ControllerMapping_t *pControllerMap;
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while (s_pSupportedControllers) {
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pControllerMap = s_pSupportedControllers;
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@ -1555,6 +1689,19 @@ SDL_GameControllerQuit(void)
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SDL_DelEventWatch(SDL_GameControllerEventWatcher, NULL);
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SDL_DelHintCallback(SDL_HINT_GAMECONTROLLER_IGNORE_DEVICES,
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SDL_GameControllerIgnoreDevicesChanged, NULL);
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SDL_DelHintCallback(SDL_HINT_GAMECONTROLLER_IGNORE_DEVICES_EXCEPT,
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SDL_GameControllerIgnoreDevicesExceptChanged, NULL);
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if (SDL_allowed_controllers.entries) {
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SDL_free(SDL_allowed_controllers.entries);
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SDL_zero(SDL_allowed_controllers);
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}
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if (SDL_ignored_controllers.entries) {
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SDL_free(SDL_ignored_controllers.entries);
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SDL_zero(SDL_ignored_controllers);
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}
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}
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/*
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