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Rumbling the Google Stadia Controller over Bluetooth works on Linux and macOS

main
Sam Lantinga 2023-02-21 15:05:57 -08:00
parent 021a7cfa13
commit 4aeec9d8c2
1 changed files with 21 additions and 16 deletions
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37
src/joystick/hidapi/SDL_hidapi_stadia.c
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@ -40,6 +40,7 @@ enum
typedef struct typedef struct
{ {
SDL_bool rumble_supported;
Uint8 last_state[USB_PACKET_LENGTH]; Uint8 last_state[USB_PACKET_LENGTH];
} SDL_DriverStadia_Context; } SDL_DriverStadia_Context;
@ -74,12 +75,12 @@ static SDL_bool HIDAPI_DriverStadia_InitDevice(SDL_HIDAPI_Device *device)
} }
device->context = ctx; device->context = ctx;
/* Check whether this is connected via USB or Bluetooth */ /* Check whether rumble is supported */
{ {
Uint8 rumble_packet[] = { 0x05, 0x00, 0x00, 0x00, 0x00 }; Uint8 rumble_packet[] = { 0x05, 0x00, 0x00, 0x00, 0x00 };
if (SDL_hid_write(device->dev, rumble_packet, sizeof(rumble_packet)) < 0) { if (SDL_hid_write(device->dev, rumble_packet, sizeof(rumble_packet)) >= 0) {
device->is_bluetooth = SDL_TRUE; ctx->rumble_supported = SDL_TRUE;
} }
} }
@ -116,21 +117,24 @@ static SDL_bool HIDAPI_DriverStadia_OpenJoystick(SDL_HIDAPI_Device *device, SDL_
static int HIDAPI_DriverStadia_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble) static int HIDAPI_DriverStadia_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
{ {
Uint8 rumble_packet[] = { 0x05, 0x00, 0x00, 0x00, 0x00 }; SDL_DriverStadia_Context *ctx = (SDL_DriverStadia_Context *)device->context;
if (device->is_bluetooth) { if (ctx->rumble_supported) {
Uint8 rumble_packet[] = { 0x05, 0x00, 0x00, 0x00, 0x00 };
rumble_packet[1] = (low_frequency_rumble & 0xFF);
rumble_packet[2] = (low_frequency_rumble >> 8);
rumble_packet[3] = (high_frequency_rumble & 0xFF);
rumble_packet[4] = (high_frequency_rumble >> 8);
if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
return SDL_SetError("Couldn't send rumble packet");
}
return 0;
} else {
return SDL_Unsupported(); return SDL_Unsupported();
} }
rumble_packet[1] = (low_frequency_rumble & 0xFF);
rumble_packet[2] = (low_frequency_rumble >> 8);
rumble_packet[3] = (high_frequency_rumble & 0xFF);
rumble_packet[4] = (high_frequency_rumble >> 8);
if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
return SDL_SetError("Couldn't send rumble packet");
}
return 0;
} }
static int HIDAPI_DriverStadia_RumbleJoystickTriggers(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble) static int HIDAPI_DriverStadia_RumbleJoystickTriggers(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
@ -140,9 +144,10 @@ static int HIDAPI_DriverStadia_RumbleJoystickTriggers(SDL_HIDAPI_Device *device,
static Uint32 HIDAPI_DriverStadia_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick) static Uint32 HIDAPI_DriverStadia_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
{ {
SDL_DriverStadia_Context *ctx = (SDL_DriverStadia_Context *)device->context;
Uint32 caps = 0; Uint32 caps = 0;
if (!device->is_bluetooth) { if (ctx->rumble_supported) {
caps |= SDL_JOYCAP_RUMBLE; caps |= SDL_JOYCAP_RUMBLE;
} }
return caps; return caps;