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hidapi: Add support for Wii U/Switch USB GameCube controller adapter.

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Note that a single USB device is responsible for all 4 joysticks, so a large
rewrite of the DeviceDriver functions was necessary to allow a single device to
produce multiple joysticks.
This commit is contained in:
Ethan Lee
2019-03-12 20:27:54 -04:00
parent 938a5508d1
commit c528615626
13 changed files with 724 additions and 176 deletions
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68
src/joystick/hidapi/SDL_hidapi_switch.c
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@@ -183,6 +183,7 @@ typedef struct
#pragma pack()
typedef struct {
SDL_JoystickID joystickID;
hid_device *dev;
SDL_bool m_bIsUsingBluetooth;
Uint8 m_nCommandNumber;
@@ -570,7 +571,7 @@ static Sint16 ApplyStickCalibration(SDL_DriverSwitch_Context *ctx, int nStick, i
}
static SDL_bool
HIDAPI_DriverSwitch_Init(SDL_Joystick *joystick, hid_device *dev, Uint16 vendor_id, Uint16 product_id, void **context)
HIDAPI_DriverSwitch_InitDriver(SDL_HIDAPI_DriverData *context, Uint16 vendor_id, Uint16 product_id, int *num_joysticks)
{
SDL_DriverSwitch_Context *ctx;
Uint8 input_mode;
@@ -580,9 +581,9 @@ HIDAPI_DriverSwitch_Init(SDL_Joystick *joystick, hid_device *dev, Uint16 vendor_
SDL_OutOfMemory();
return SDL_FALSE;
}
ctx->dev = dev;
ctx->dev = context->device;
*context = ctx;
context->context = ctx;
/* Initialize rumble data */
SetNeutralRumble(&ctx->m_RumblePacket.rumbleData[0]);
@@ -627,6 +628,18 @@ HIDAPI_DriverSwitch_Init(SDL_Joystick *joystick, hid_device *dev, Uint16 vendor_
}
}
ctx->joystickID = SDL_GetNextJoystickInstanceID();
*num_joysticks += 1;
SDL_PrivateJoystickAdded(ctx->joystickID);
return SDL_TRUE;
}
static SDL_bool
HIDAPI_DriverSwitch_OpenJoystick(SDL_HIDAPI_DriverData *context, SDL_Joystick *joystick)
{
SDL_DriverSwitch_Context *ctx = (SDL_DriverSwitch_Context *)context->context;
/* Set the LED state */
SetHomeLED(ctx, 100);
SetSlotLED(ctx, (joystick->instance_id % 4));
@@ -640,9 +653,9 @@ HIDAPI_DriverSwitch_Init(SDL_Joystick *joystick, hid_device *dev, Uint16 vendor_
}
static int
HIDAPI_DriverSwitch_Rumble(SDL_Joystick *joystick, hid_device *dev, void *context, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
HIDAPI_DriverSwitch_Rumble(SDL_HIDAPI_DriverData *context, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
{
SDL_DriverSwitch_Context *ctx = (SDL_DriverSwitch_Context *)context;
SDL_DriverSwitch_Context *ctx = (SDL_DriverSwitch_Context *)context->context;
/* Experimentally determined rumble values. These will only matter on some controllers as tested ones
* seem to disregard these and just use any non-zero rumble values as a binary flag for constant rumble
@@ -847,11 +860,16 @@ static void HandleFullControllerState(SDL_Joystick *joystick, SDL_DriverSwitch_C
}
static SDL_bool
HIDAPI_DriverSwitch_Update(SDL_Joystick *joystick, hid_device *dev, void *context)
HIDAPI_DriverSwitch_UpdateDriver(SDL_HIDAPI_DriverData *context, int *num_joysticks)
{
SDL_DriverSwitch_Context *ctx = (SDL_DriverSwitch_Context *)context;
SDL_DriverSwitch_Context *ctx = (SDL_DriverSwitch_Context *)context->context;
SDL_Joystick *joystick = SDL_JoystickFromInstanceID(ctx->joystickID);
int size;
if (joystick == NULL) {
return SDL_TRUE; /* Nothing to do right now! */
}
while ((size = ReadInput(ctx)) > 0) {
switch (ctx->m_rgucReadBuffer[0]) {
case k_eSwitchInputReportIDs_SimpleControllerState:
@@ -868,7 +886,7 @@ HIDAPI_DriverSwitch_Update(SDL_Joystick *joystick, hid_device *dev, void *contex
if (ctx->m_nRumbleExpiration) {
Uint32 now = SDL_GetTicks();
if (SDL_TICKS_PASSED(now, ctx->m_nRumbleExpiration)) {
HIDAPI_DriverSwitch_Rumble(joystick, dev, context, 0, 0, 0);
HIDAPI_DriverSwitch_Rumble(context, joystick, 0, 0, 0);
}
}
@@ -876,14 +894,31 @@ HIDAPI_DriverSwitch_Update(SDL_Joystick *joystick, hid_device *dev, void *contex
}
static void
HIDAPI_DriverSwitch_Quit(SDL_Joystick *joystick, hid_device *dev, void *context)
HIDAPI_DriverSwitch_QuitDriver(SDL_HIDAPI_DriverData *context, SDL_bool send_event, int *num_joysticks)
{
SDL_DriverSwitch_Context *ctx = (SDL_DriverSwitch_Context *)context;
SDL_DriverSwitch_Context *ctx = (SDL_DriverSwitch_Context *)context->context;
/* Restore simple input mode for other applications */
SetInputMode(ctx, k_eSwitchInputReportIDs_SimpleControllerState);
SDL_free(context);
*num_joysticks -= 1;
if (send_event) {
SDL_PrivateJoystickRemoved(ctx->joystickID);
}
SDL_free(context->context);
}
static int
HIDAPI_DriverSwitch_NumJoysticks(SDL_HIDAPI_DriverData *context)
{
return 1;
}
static SDL_JoystickID
HIDAPI_DriverSwitch_InstanceIDForIndex(SDL_HIDAPI_DriverData *context, int index)
{
SDL_DriverSwitch_Context *ctx = (SDL_DriverSwitch_Context *)context->context;
return ctx->joystickID;
}
SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverSwitch =
@@ -892,10 +927,13 @@ SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverSwitch =
SDL_TRUE,
HIDAPI_DriverSwitch_IsSupportedDevice,
HIDAPI_DriverSwitch_GetDeviceName,
HIDAPI_DriverSwitch_Init,
HIDAPI_DriverSwitch_Rumble,
HIDAPI_DriverSwitch_Update,
HIDAPI_DriverSwitch_Quit
HIDAPI_DriverSwitch_InitDriver,
HIDAPI_DriverSwitch_QuitDriver,
HIDAPI_DriverSwitch_UpdateDriver,
HIDAPI_DriverSwitch_NumJoysticks,
HIDAPI_DriverSwitch_InstanceIDForIndex,
HIDAPI_DriverSwitch_OpenJoystick,
HIDAPI_DriverSwitch_Rumble
};
#endif /* SDL_JOYSTICK_HIDAPI_SWITCH */