| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "../../SDL_internal.h" |
| |
| #ifdef SDL_JOYSTICK_HIDAPI |
| |
| #include "SDL_hints.h" |
| #include "SDL_log.h" |
| #include "SDL_events.h" |
| #include "SDL_timer.h" |
| #include "SDL_haptic.h" |
| #include "SDL_joystick.h" |
| #include "SDL_gamecontroller.h" |
| #include "../../SDL_hints_c.h" |
| #include "../SDL_sysjoystick.h" |
| #include "SDL_hidapijoystick_c.h" |
| #include "SDL_hidapi_rumble.h" |
| |
| |
| #ifdef SDL_JOYSTICK_HIDAPI_GAMECUBE |
| |
| #define MAX_CONTROLLERS 4 |
| |
| typedef struct { |
| SDL_JoystickID joysticks[MAX_CONTROLLERS]; |
| Uint8 wireless[MAX_CONTROLLERS]; |
| Uint8 min_axis[MAX_CONTROLLERS*SDL_CONTROLLER_AXIS_MAX]; |
| Uint8 max_axis[MAX_CONTROLLERS*SDL_CONTROLLER_AXIS_MAX]; |
| Uint8 rumbleAllowed[MAX_CONTROLLERS]; |
| Uint8 rumble[1+MAX_CONTROLLERS]; |
| /* Without this variable, hid_write starts to lag a TON */ |
| SDL_bool rumbleUpdate; |
| SDL_bool m_bUseButtonLabels; |
| } SDL_DriverGameCube_Context; |
| |
| static SDL_bool |
| HIDAPI_DriverGameCube_IsSupportedDevice(const char *name, SDL_GameControllerType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol) |
| { |
| if (vendor_id == USB_VENDOR_NINTENDO && product_id == USB_PRODUCT_NINTENDO_GAMECUBE_ADAPTER) { |
| /* Nintendo Co., Ltd. Wii U GameCube Controller Adapter */ |
| return SDL_TRUE; |
| } |
| return SDL_FALSE; |
| } |
| |
| static const char * |
| HIDAPI_DriverGameCube_GetDeviceName(Uint16 vendor_id, Uint16 product_id) |
| { |
| return "Nintendo GameCube Controller"; |
| } |
| |
| static void |
| ResetAxisRange(SDL_DriverGameCube_Context *ctx, int joystick_index) |
| { |
| SDL_memset(&ctx->min_axis[joystick_index*SDL_CONTROLLER_AXIS_MAX], 128-88, SDL_CONTROLLER_AXIS_MAX); |
| SDL_memset(&ctx->max_axis[joystick_index*SDL_CONTROLLER_AXIS_MAX], 128+88, SDL_CONTROLLER_AXIS_MAX); |
| |
| /* Trigger axes may have a higher resting value */ |
| ctx->min_axis[joystick_index*SDL_CONTROLLER_AXIS_MAX+SDL_CONTROLLER_AXIS_TRIGGERLEFT] = 40; |
| ctx->min_axis[joystick_index*SDL_CONTROLLER_AXIS_MAX+SDL_CONTROLLER_AXIS_TRIGGERRIGHT] = 40; |
| } |
| |
| static float fsel(float fComparand, float fValGE, float fLT) |
| { |
| return fComparand >= 0 ? fValGE : fLT; |
| } |
| |
| static float RemapVal(float val, float A, float B, float C, float D) |
| { |
| if (A == B) { |
| return fsel(val - B , D , C); |
| } |
| if (val < A) { |
| val = A; |
| } |
| if (val > B) { |
| val = B; |
| } |
| return C + (D - C) * (val - A) / (B - A); |
| } |
| |
| static void SDLCALL SDL_GameControllerButtonReportingHintChanged(void *userdata, const char *name, const char *oldValue, const char *hint) |
| { |
| SDL_DriverGameCube_Context *ctx = (SDL_DriverGameCube_Context *)userdata; |
| ctx->m_bUseButtonLabels = SDL_GetStringBoolean(hint, SDL_TRUE); |
| } |
| |
| static Uint8 RemapButton(SDL_DriverGameCube_Context *ctx, Uint8 button) |
| { |
| if (!ctx->m_bUseButtonLabels) { |
| /* Use button positions */ |
| switch (button) { |
| case SDL_CONTROLLER_BUTTON_B: |
| return SDL_CONTROLLER_BUTTON_X; |
| case SDL_CONTROLLER_BUTTON_X: |
| return SDL_CONTROLLER_BUTTON_B; |
| default: |
| break; |
| } |
| } |
| return button; |
| } |
| |
| static SDL_bool |
| HIDAPI_DriverGameCube_InitDevice(SDL_HIDAPI_Device *device) |
| { |
| SDL_DriverGameCube_Context *ctx; |
| Uint8 packet[37]; |
| Uint8 *curSlot; |
| Uint8 i; |
| int size; |
| Uint8 initMagic = 0x13; |
| Uint8 rumbleMagic = 0x11; |
| |
| ctx = (SDL_DriverGameCube_Context *)SDL_calloc(1, sizeof(*ctx)); |
| if (!ctx) { |
| SDL_OutOfMemory(); |
| return SDL_FALSE; |
| } |
| |
| device->dev = hid_open_path(device->path, 0); |
| if (!device->dev) { |
| SDL_free(ctx); |
| SDL_SetError("Couldn't open %s", device->path); |
| return SDL_FALSE; |
| } |
| device->context = ctx; |
| |
| ctx->joysticks[0] = -1; |
| ctx->joysticks[1] = -1; |
| ctx->joysticks[2] = -1; |
| ctx->joysticks[3] = -1; |
| ctx->rumble[0] = rumbleMagic; |
| |
| /* This is all that's needed to initialize the device. Really! */ |
| if (hid_write(device->dev, &initMagic, sizeof(initMagic)) != sizeof(initMagic)) { |
| SDL_SetError("Couldn't initialize WUP-028"); |
| goto error; |
| } |
| |
| /* Wait for the adapter to initialize */ |
| SDL_Delay(10); |
| |
| /* Add all the applicable joysticks */ |
| while ((size = hid_read_timeout(device->dev, packet, sizeof(packet), 0)) > 0) { |
| if (size < 37 || packet[0] != 0x21) { |
| continue; /* Nothing to do yet...? */ |
| } |
| |
| /* Go through all 4 slots */ |
| curSlot = packet + 1; |
| for (i = 0; i < MAX_CONTROLLERS; i += 1, curSlot += 9) { |
| ctx->wireless[i] = (curSlot[0] & 0x20) != 0; |
| |
| /* Only allow rumble if the adapter's second USB cable is connected */ |
| ctx->rumbleAllowed[i] = (curSlot[0] & 0x04) != 0 && !ctx->wireless[i]; |
| |
| if (curSlot[0] & 0x30) { /* 0x10 - Wired, 0x20 - Wireless */ |
| if (ctx->joysticks[i] == -1) { |
| ResetAxisRange(ctx, i); |
| HIDAPI_JoystickConnected(device, &ctx->joysticks[i]); |
| } |
| } else { |
| if (ctx->joysticks[i] != -1) { |
| HIDAPI_JoystickDisconnected(device, ctx->joysticks[i]); |
| ctx->joysticks[i] = -1; |
| } |
| continue; |
| } |
| } |
| } |
| |
| SDL_AddHintCallback(SDL_HINT_GAMECONTROLLER_USE_BUTTON_LABELS, |
| SDL_GameControllerButtonReportingHintChanged, ctx); |
| |
| return SDL_TRUE; |
| |
| error: |
| if (device->dev) { |
| hid_close(device->dev); |
| device->dev = NULL; |
| } |
| if (device->context) { |
| SDL_free(device->context); |
| device->context = NULL; |
| } |
| return SDL_FALSE; |
| } |
| |
| static int |
| HIDAPI_DriverGameCube_GetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id) |
| { |
| SDL_DriverGameCube_Context *ctx = (SDL_DriverGameCube_Context *)device->context; |
| Uint8 i; |
| |
| for (i = 0; i < 4; ++i) { |
| if (instance_id == ctx->joysticks[i]) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| static void |
| HIDAPI_DriverGameCube_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id, int player_index) |
| { |
| } |
| |
| static SDL_bool |
| HIDAPI_DriverGameCube_UpdateDevice(SDL_HIDAPI_Device *device) |
| { |
| SDL_DriverGameCube_Context *ctx = (SDL_DriverGameCube_Context *)device->context; |
| SDL_Joystick *joystick; |
| Uint8 packet[37]; |
| Uint8 *curSlot; |
| Uint8 i; |
| Sint16 axis_value; |
| int size; |
| |
| /* Read input packet */ |
| while ((size = hid_read_timeout(device->dev, packet, sizeof(packet), 0)) > 0) { |
| if (size < 37 || packet[0] != 0x21) { |
| continue; /* Nothing to do right now...? */ |
| } |
| |
| /* Go through all 4 slots */ |
| curSlot = packet + 1; |
| for (i = 0; i < MAX_CONTROLLERS; i += 1, curSlot += 9) { |
| ctx->wireless[i] = (curSlot[0] & 0x20) != 0; |
| |
| /* Only allow rumble if the adapter's second USB cable is connected */ |
| ctx->rumbleAllowed[i] = (curSlot[0] & 0x04) != 0 && !ctx->wireless[i]; |
| |
| if (curSlot[0] & 0x30) { /* 0x10 - Wired, 0x20 - Wireless */ |
| if (ctx->joysticks[i] == -1) { |
| ResetAxisRange(ctx, i); |
| HIDAPI_JoystickConnected(device, &ctx->joysticks[i]); |
| } |
| joystick = SDL_JoystickFromInstanceID(ctx->joysticks[i]); |
| |
| /* Hasn't been opened yet, skip */ |
| if (joystick == NULL) { |
| continue; |
| } |
| } else { |
| if (ctx->joysticks[i] != -1) { |
| HIDAPI_JoystickDisconnected(device, ctx->joysticks[i]); |
| ctx->joysticks[i] = -1; |
| } |
| continue; |
| } |
| |
| #define READ_BUTTON(off, flag, button) \ |
| SDL_PrivateJoystickButton( \ |
| joystick, \ |
| RemapButton(ctx, button), \ |
| (curSlot[off] & flag) ? SDL_PRESSED : SDL_RELEASED \ |
| ); |
| READ_BUTTON(1, 0x01, 0) /* A */ |
| READ_BUTTON(1, 0x04, 1) /* B */ |
| READ_BUTTON(1, 0x02, 2) /* X */ |
| READ_BUTTON(1, 0x08, 3) /* Y */ |
| READ_BUTTON(1, 0x10, 4) /* DPAD_LEFT */ |
| READ_BUTTON(1, 0x20, 5) /* DPAD_RIGHT */ |
| READ_BUTTON(1, 0x40, 6) /* DPAD_DOWN */ |
| READ_BUTTON(1, 0x80, 7) /* DPAD_UP */ |
| READ_BUTTON(2, 0x01, 8) /* START */ |
| READ_BUTTON(2, 0x02, 9) /* RIGHTSHOULDER */ |
| /* These two buttons are for the bottoms of the analog triggers. |
| * More than likely, you're going to want to read the axes instead! |
| * -flibit |
| */ |
| READ_BUTTON(2, 0x04, 10) /* TRIGGERRIGHT */ |
| READ_BUTTON(2, 0x08, 11) /* TRIGGERLEFT */ |
| #undef READ_BUTTON |
| |
| #define READ_AXIS(off, axis) \ |
| if (axis < SDL_CONTROLLER_AXIS_TRIGGERLEFT) \ |
| if (curSlot[off] < ctx->min_axis[i*SDL_CONTROLLER_AXIS_MAX+axis]) ctx->min_axis[i*SDL_CONTROLLER_AXIS_MAX+axis] = curSlot[off]; \ |
| if (curSlot[off] > ctx->max_axis[i*SDL_CONTROLLER_AXIS_MAX+axis]) ctx->max_axis[i*SDL_CONTROLLER_AXIS_MAX+axis] = curSlot[off]; \ |
| axis_value = (Sint16)(RemapVal(curSlot[off], ctx->min_axis[i*SDL_CONTROLLER_AXIS_MAX+axis], ctx->max_axis[i*SDL_CONTROLLER_AXIS_MAX+axis], SDL_MIN_SINT16, SDL_MAX_SINT16)); \ |
| SDL_PrivateJoystickAxis( \ |
| joystick, \ |
| axis, axis_value \ |
| ); |
| READ_AXIS(3, SDL_CONTROLLER_AXIS_LEFTX) |
| READ_AXIS(4, SDL_CONTROLLER_AXIS_LEFTY) |
| READ_AXIS(5, SDL_CONTROLLER_AXIS_RIGHTX) |
| READ_AXIS(6, SDL_CONTROLLER_AXIS_RIGHTY) |
| READ_AXIS(7, SDL_CONTROLLER_AXIS_TRIGGERLEFT) |
| READ_AXIS(8, SDL_CONTROLLER_AXIS_TRIGGERRIGHT) |
| #undef READ_AXIS |
| } |
| } |
| |
| /* Write rumble packet */ |
| if (ctx->rumbleUpdate) { |
| SDL_HIDAPI_SendRumble(device, ctx->rumble, sizeof(ctx->rumble)); |
| ctx->rumbleUpdate = SDL_FALSE; |
| } |
| |
| /* If we got here, nothing bad happened! */ |
| return SDL_TRUE; |
| } |
| |
| static SDL_bool |
| HIDAPI_DriverGameCube_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick) |
| { |
| SDL_DriverGameCube_Context *ctx = (SDL_DriverGameCube_Context *)device->context; |
| Uint8 i; |
| for (i = 0; i < MAX_CONTROLLERS; i += 1) { |
| if (joystick->instance_id == ctx->joysticks[i]) { |
| joystick->nbuttons = 12; |
| joystick->naxes = SDL_CONTROLLER_AXIS_MAX; |
| joystick->epowerlevel = ctx->wireless[i] ? SDL_JOYSTICK_POWER_UNKNOWN : SDL_JOYSTICK_POWER_WIRED; |
| return SDL_TRUE; |
| } |
| } |
| return SDL_FALSE; /* Should never get here! */ |
| } |
| |
| static int |
| HIDAPI_DriverGameCube_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble) |
| { |
| SDL_DriverGameCube_Context *ctx = (SDL_DriverGameCube_Context *)device->context; |
| Uint8 i, val; |
| for (i = 0; i < MAX_CONTROLLERS; i += 1) { |
| if (joystick->instance_id == ctx->joysticks[i]) { |
| if (ctx->wireless[i]) { |
| return SDL_SetError("Ninteno GameCube WaveBird controllers do not support rumble"); |
| } |
| if (!ctx->rumbleAllowed[i]) { |
| return SDL_SetError("Second USB cable for WUP-028 not connected"); |
| } |
| val = (low_frequency_rumble > 0 || high_frequency_rumble > 0); |
| if (val != ctx->rumble[i + 1]) { |
| ctx->rumble[i + 1] = val; |
| ctx->rumbleUpdate = SDL_TRUE; |
| } |
| return 0; |
| } |
| } |
| |
| /* Should never get here! */ |
| SDL_SetError("Couldn't find joystick"); |
| return -1; |
| } |
| |
| static void |
| HIDAPI_DriverGameCube_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick) |
| { |
| SDL_DriverGameCube_Context *ctx = (SDL_DriverGameCube_Context *)device->context; |
| |
| /* Stop rumble activity */ |
| if (ctx->rumbleUpdate) { |
| SDL_HIDAPI_SendRumble(device, ctx->rumble, sizeof(ctx->rumble)); |
| ctx->rumbleUpdate = SDL_FALSE; |
| } |
| } |
| |
| static void |
| HIDAPI_DriverGameCube_FreeDevice(SDL_HIDAPI_Device *device) |
| { |
| SDL_DriverGameCube_Context *ctx = (SDL_DriverGameCube_Context *)device->context; |
| |
| hid_close(device->dev); |
| device->dev = NULL; |
| |
| SDL_DelHintCallback(SDL_HINT_GAMECONTROLLER_USE_BUTTON_LABELS, |
| SDL_GameControllerButtonReportingHintChanged, ctx); |
| |
| SDL_free(device->context); |
| device->context = NULL; |
| } |
| |
| SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverGameCube = |
| { |
| SDL_HINT_JOYSTICK_HIDAPI_GAMECUBE, |
| SDL_TRUE, |
| HIDAPI_DriverGameCube_IsSupportedDevice, |
| HIDAPI_DriverGameCube_GetDeviceName, |
| HIDAPI_DriverGameCube_InitDevice, |
| HIDAPI_DriverGameCube_GetDevicePlayerIndex, |
| HIDAPI_DriverGameCube_SetDevicePlayerIndex, |
| HIDAPI_DriverGameCube_UpdateDevice, |
| HIDAPI_DriverGameCube_OpenJoystick, |
| HIDAPI_DriverGameCube_RumbleJoystick, |
| HIDAPI_DriverGameCube_CloseJoystick, |
| HIDAPI_DriverGameCube_FreeDevice |
| }; |
| |
| #endif /* SDL_JOYSTICK_HIDAPI_GAMECUBE */ |
| |
| #endif /* SDL_JOYSTICK_HIDAPI */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
