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Added SDL_HINT_JOYSTICK_HIDAPI_STEAM_HOME_LED

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This commit is contained in:
Sam Lantinga 2024-11-18 14:42:39 -08:00
parent 184da780f5
commit d8f8cf3e99
2 changed files with 63 additions and 0 deletions
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19
include/SDL3/SDL_hints.h
View File

@ -1659,6 +1659,25 @@ extern "C" {
*/
#define SDL_HINT_JOYSTICK_HIDAPI_STEAM "SDL_JOYSTICK_HIDAPI_STEAM"
/**
* A variable controlling whether the Steam button LED should be turned on when
* a Steam controller is opened.
*
* The variable can be set to the following values:
*
* - "0": Steam button LED is turned off.
* - "1": Steam button LED is turned on.
*
* By default the Steam button LED state is not changed. This hint can also be
* set to a floating point value between 0.0 and 1.0 which controls the
* brightness of the Steam button LED.
*
* This hint can be set anytime.
*
* \since This hint is available since SDL 3.1.8.
*/
#define SDL_HINT_JOYSTICK_HIDAPI_STEAM_HOME_LED "SDL_JOYSTICK_HIDAPI_STEAM_HOME_LED"
/**
* A variable controlling whether the HIDAPI driver for the Steam Deck builtin
* controller should be used.

44
src/joystick/hidapi/SDL_hidapi_steam.c
View File

@ -1142,6 +1142,42 @@ static void HIDAPI_DriverSteam_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, S
{
}
static bool SetHomeLED(SDL_HIDAPI_Device *device, Uint8 value)
{
unsigned char buf[65];
int nSettings = 0;
SDL_memset(buf, 0, 65);
buf[1] = ID_SET_SETTINGS_VALUES;
ADD_SETTING(SETTING_LED_USER_BRIGHTNESS, value);
buf[2] = (unsigned char)(nSettings * 3);
if (SetFeatureReport(device, buf, 3 + nSettings * 3) < 0) {
return SDL_SetError("Couldn't write feature report");
}
return true;
}
static void SDLCALL SDL_HomeLEDHintChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
{
SDL_DriverSteam_Context *ctx = (SDL_DriverSteam_Context *)userdata;
if (hint && *hint) {
int value;
if (SDL_strchr(hint, '.') != NULL) {
value = (int)(100.0f * SDL_atof(hint));
if (value > 255) {
value = 255;
}
} else if (SDL_GetStringBoolean(hint, true)) {
value = 100;
} else {
value = 0;
}
SetHomeLED(ctx->device, (Uint8)value);
}
}
static bool HIDAPI_DriverSteam_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
{
SDL_DriverSteam_Context *ctx = (SDL_DriverSteam_Context *)device->context;
@ -1176,6 +1212,9 @@ static bool HIDAPI_DriverSteam_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joyst
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_GYRO, update_rate_in_hz);
SDL_PrivateJoystickAddSensor(joystick, SDL_SENSOR_ACCEL, update_rate_in_hz);
SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_STEAM_HOME_LED,
SDL_HomeLEDHintChanged, ctx);
return true;
}
@ -1395,6 +1434,11 @@ static bool HIDAPI_DriverSteam_UpdateDevice(SDL_HIDAPI_Device *device)
static void HIDAPI_DriverSteam_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
{
SDL_DriverSteam_Context *ctx = (SDL_DriverSteam_Context *)device->context;
SDL_RemoveHintCallback(SDL_HINT_JOYSTICK_HIDAPI_STEAM_HOME_LED,
SDL_HomeLEDHintChanged, ctx);
CloseSteamController(device);
}