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Added support for third party Nintendo Switch controllers that don't support the full protocol

This commit is contained in:
Sam Lantinga 2019-10-17 16:59:05 -07:00
parent 43c5f62d44
commit e6ac16ef2f
3 changed files with 179 additions and 56 deletions
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7
src/joystick/SDL_joystick.c
View File

@ -1171,6 +1171,13 @@ SDL_IsJoystickNintendoSwitchPro(Uint16 vendor, Uint16 product)
eType == k_eControllerType_SwitchInputOnlyController);
}
SDL_bool
SDL_IsJoystickNintendoSwitchProInputOnly(Uint16 vendor, Uint16 product)
{
EControllerType eType = GuessControllerType(vendor, product);
return (eType == k_eControllerType_SwitchInputOnlyController);
}
SDL_bool
SDL_IsJoystickSteamController(Uint16 vendor, Uint16 product)
{

1
src/joystick/SDL_joystick_c.h
View File

@ -56,6 +56,7 @@ extern SDL_bool SDL_IsJoystickPS4(Uint16 vendor_id, Uint16 product_id);
/* Function to return whether a joystick is a Nintendo Switch Pro controller */
extern SDL_bool SDL_IsJoystickNintendoSwitchPro( Uint16 vendor_id, Uint16 product_id );
extern SDL_bool SDL_IsJoystickNintendoSwitchProInputOnly(Uint16 vendor_id, Uint16 product_id);
/* Function to return whether a joystick is a Steam Controller */
extern SDL_bool SDL_IsJoystickSteamController(Uint16 vendor_id, Uint16 product_id);

115
src/joystick/hidapi/SDL_hidapi_switch.c
View File

@ -87,6 +87,14 @@ typedef enum {
#define k_unSPIStickCalibrationLength (k_unSPIStickCalibrationEndOffset - k_unSPIStickCalibrationStartOffset + 1)
#pragma pack(1)
typedef struct
{
Uint8 rgucButtons[2];
Uint8 ucStickHat;
Uint8 rgucJoystickLeft[2];
Uint8 rgucJoystickRight[2];
} SwitchInputOnlyControllerStatePacket_t;
typedef struct
{
Uint8 rgucButtons[2];
@ -184,11 +192,14 @@ typedef struct
typedef struct {
hid_device *dev;
SDL_bool m_bIsInputOnly;
SDL_bool m_bIsUsingBluetooth;
Uint8 m_nCommandNumber;
SwitchCommonOutputPacket_t m_RumblePacket;
Uint32 m_nRumbleExpiration;
Uint8 m_rgucReadBuffer[k_unSwitchMaxOutputPacketLength];
SwitchInputOnlyControllerStatePacket_t m_lastInputOnlyState;
SwitchSimpleStatePacket_t m_lastSimpleState;
SwitchStatePacket_t m_lastFullState;
@ -584,6 +595,9 @@ HIDAPI_DriverSwitch_Init(SDL_Joystick *joystick, hid_device *dev, Uint16 vendor_
*context = ctx;
/* Find out whether or not we can send output reports */
ctx->m_bIsInputOnly = SDL_IsJoystickNintendoSwitchProInputOnly(vendor_id, product_id);
if (!ctx->m_bIsInputOnly) {
/* Initialize rumble data */
SetNeutralRumble(&ctx->m_RumblePacket.rumbleData[0]);
SetNeutralRumble(&ctx->m_RumblePacket.rumbleData[1]);
@ -630,6 +644,7 @@ HIDAPI_DriverSwitch_Init(SDL_Joystick *joystick, hid_device *dev, Uint16 vendor_
/* Set the LED state */
SetHomeLED(ctx, 100);
SetSlotLED(ctx, (joystick->instance_id % 4));
}
/* Initialize the joystick capabilities */
joystick->nbuttons = SDL_CONTROLLER_BUTTON_MAX;
@ -680,6 +695,102 @@ HIDAPI_DriverSwitch_Rumble(SDL_Joystick *joystick, hid_device *dev, void *contex
return 0;
}
static void HandleInputOnlyControllerState(SDL_Joystick *joystick, SDL_DriverSwitch_Context *ctx, SwitchInputOnlyControllerStatePacket_t *packet)
{
Sint16 axis;
if (packet->rgucButtons[0] != ctx->m_lastInputOnlyState.rgucButtons[0]) {
Uint8 data = packet->rgucButtons[0];
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_X, (data & 0x01) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_A, (data & 0x02) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_B, (data & 0x04) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_Y, (data & 0x08) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSHOULDER, (data & 0x10) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, (data & 0x20) ? SDL_PRESSED : SDL_RELEASED);
axis = (data & 0x40) ? 32767 : -32768;
SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERLEFT, axis);
axis = (data & 0x80) ? 32767 : -32768;
SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, axis);
}
if (packet->rgucButtons[1] != ctx->m_lastInputOnlyState.rgucButtons[1]) {
Uint8 data = packet->rgucButtons[1];
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_BACK, (data & 0x01) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_START, (data & 0x02) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSTICK, (data & 0x04) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSTICK, (data & 0x08) ? SDL_PRESSED : SDL_RELEASED);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_GUIDE, (data & 0x10) ? SDL_PRESSED : SDL_RELEASED);
}
if (packet->ucStickHat != ctx->m_lastInputOnlyState.ucStickHat) {
SDL_bool dpad_up = SDL_FALSE;
SDL_bool dpad_down = SDL_FALSE;
SDL_bool dpad_left = SDL_FALSE;
SDL_bool dpad_right = SDL_FALSE;
switch (packet->ucStickHat) {
case 0:
dpad_up = SDL_TRUE;
break;
case 1:
dpad_up = SDL_TRUE;
dpad_right = SDL_TRUE;
break;
case 2:
dpad_right = SDL_TRUE;
break;
case 3:
dpad_right = SDL_TRUE;
dpad_down = SDL_TRUE;
break;
case 4:
dpad_down = SDL_TRUE;
break;
case 5:
dpad_left = SDL_TRUE;
dpad_down = SDL_TRUE;
break;
case 6:
dpad_left = SDL_TRUE;
break;
case 7:
dpad_up = SDL_TRUE;
dpad_left = SDL_TRUE;
break;
default:
break;
}
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_DOWN, dpad_down);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_UP, dpad_up);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT, dpad_right);
SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_LEFT, dpad_left);
}
if (packet->rgucJoystickLeft[0] != ctx->m_lastInputOnlyState.rgucJoystickLeft[0]) {
axis = (Sint16)(RemapVal(packet->rgucJoystickLeft[0], SDL_MIN_UINT8, SDL_MAX_UINT8, SDL_MIN_SINT16, SDL_MAX_SINT16));
SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTX, axis);
}
if (packet->rgucJoystickLeft[1] != ctx->m_lastInputOnlyState.rgucJoystickLeft[1]) {
axis = (Sint16)(RemapVal(packet->rgucJoystickLeft[1], SDL_MIN_UINT8, SDL_MAX_UINT8, SDL_MIN_SINT16, SDL_MAX_SINT16));
SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTY, axis);
}
if (packet->rgucJoystickRight[0] != ctx->m_lastInputOnlyState.rgucJoystickRight[0]) {
axis = (Sint16)(RemapVal(packet->rgucJoystickRight[0], SDL_MIN_UINT8, SDL_MAX_UINT8, SDL_MIN_SINT16, SDL_MAX_SINT16));
SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTX, axis);
}
if (packet->rgucJoystickRight[1] != ctx->m_lastInputOnlyState.rgucJoystickRight[1]) {
axis = (Sint16)(RemapVal(packet->rgucJoystickRight[1], SDL_MIN_UINT8, SDL_MAX_UINT8, SDL_MIN_SINT16, SDL_MAX_SINT16));
SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTY, axis);
}
ctx->m_lastInputOnlyState = *packet;
}
static void HandleSimpleControllerState(SDL_Joystick *joystick, SDL_DriverSwitch_Context *ctx, SwitchSimpleStatePacket_t *packet)
{
/* 0x8000 is the neutral value for all joystick axes */
@ -853,6 +964,9 @@ HIDAPI_DriverSwitch_Update(SDL_Joystick *joystick, hid_device *dev, void *contex
int size;
while ((size = ReadInput(ctx)) > 0) {
if (ctx->m_bIsInputOnly) {
HandleInputOnlyControllerState(joystick, ctx, (SwitchInputOnlyControllerStatePacket_t *)&ctx->m_rgucReadBuffer[0]);
} else {
switch (ctx->m_rgucReadBuffer[0]) {
case k_eSwitchInputReportIDs_SimpleControllerState:
HandleSimpleControllerState(joystick, ctx, (SwitchSimpleStatePacket_t *)&ctx->m_rgucReadBuffer[1]);
@ -864,6 +978,7 @@ HIDAPI_DriverSwitch_Update(SDL_Joystick *joystick, hid_device *dev, void *contex
break;
}
}
}
if (ctx->m_nRumbleExpiration) {
Uint32 now = SDL_GetTicks();