kc3-lang/SDL/src/joystick/virtual/SDL_virtualjoystick.c

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• Hash : 47f1cb55
  Author :
  Date : 2022-05-18T23:48:15
  

  Fixed picking up the correct mapping for virtual controllers on Android Fixes https://github.com/libsdl-org/SDL/issues/5662

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• src/joystick/virtual/SDL_virtualjoystick.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2022 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"
  
  #if defined(SDL_JOYSTICK_VIRTUAL)
  
  /* This is the virtual implementation of the SDL joystick API */
  
  #include "SDL_endian.h"
  #include "SDL_virtualjoystick_c.h"
  #include "../SDL_sysjoystick.h"
  #include "../SDL_joystick_c.h"
  
  
  static joystick_hwdata * g_VJoys = NULL;
  
  
  static joystick_hwdata *
  VIRTUAL_HWDataForIndex(int device_index)
  {
      joystick_hwdata *vjoy = g_VJoys;
      while (vjoy) {
          if (device_index == 0)
              break;
          --device_index;
          vjoy = vjoy->next;
      }
      return vjoy;
  }
  
  
  static void
  VIRTUAL_FreeHWData(joystick_hwdata *hwdata)
  {
      joystick_hwdata * cur = g_VJoys;
      joystick_hwdata * prev = NULL;
   
      if (!hwdata) {
          return;
      }
  
      /* Remove hwdata from SDL-global list */
      while (cur) {
          if (hwdata == cur) {
              if (prev) {
                  prev->next = cur->next;
              } else {
                  g_VJoys = cur->next;
              }
              break;
          }
          prev = cur;
          cur = cur->next;
      }
  
      if (hwdata->joystick) {
          hwdata->joystick->hwdata = NULL;
          hwdata->joystick = NULL;
      }
      if (hwdata->name) {
          SDL_free(hwdata->name);
          hwdata->name = NULL;
      }
      if (hwdata->axes) {
          SDL_free((void *)hwdata->axes);
          hwdata->axes = NULL;
      }
      if (hwdata->buttons) {
          SDL_free((void *)hwdata->buttons);
          hwdata->buttons = NULL;
      }
      if (hwdata->hats) {
          SDL_free(hwdata->hats);
          hwdata->hats = NULL;
      }
      SDL_free(hwdata);
  }
  
  
  int
  SDL_JoystickAttachVirtualInner(const SDL_VirtualJoystickDesc *desc)
  {
      joystick_hwdata *hwdata = NULL;
      int device_index = -1;
      const char *name = NULL;
      Uint16 *guid16;
      int axis_triggerleft = -1;
      int axis_triggerright = -1;
  
      if (!desc) {
          return SDL_InvalidParamError("desc");
      }
      if (desc->version != SDL_VIRTUAL_JOYSTICK_DESC_VERSION) {
          /* Is this an old version that we can support? */
          return SDL_SetError("Unsupported virtual joystick description version %d", desc->version);
      }
  
      hwdata = SDL_calloc(1, sizeof(joystick_hwdata));
      if (!hwdata) {
          VIRTUAL_FreeHWData(hwdata);
          return SDL_OutOfMemory();
      }
      SDL_memcpy(&hwdata->desc, desc, sizeof(*desc));
  
      if (hwdata->desc.name) {
          name = hwdata->desc.name;
      } else {
          switch (hwdata->desc.type) {
          case SDL_JOYSTICK_TYPE_GAMECONTROLLER:
              name = "Virtual Controller";
              break;
          case SDL_JOYSTICK_TYPE_WHEEL:
              name = "Virtual Wheel";
              break;
          case SDL_JOYSTICK_TYPE_ARCADE_STICK:
              name = "Virtual Arcade Stick";
              break;
          case SDL_JOYSTICK_TYPE_FLIGHT_STICK:
              name = "Virtual Flight Stick";
              break;
          case SDL_JOYSTICK_TYPE_DANCE_PAD:
              name = "Virtual Dance Pad";
              break;
          case SDL_JOYSTICK_TYPE_GUITAR:
              name = "Virtual Guitar";
              break;
          case SDL_JOYSTICK_TYPE_DRUM_KIT:
              name = "Virtual Drum Kit";
              break;
          case SDL_JOYSTICK_TYPE_ARCADE_PAD:
              name = "Virtual Arcade Pad";
              break;
          case SDL_JOYSTICK_TYPE_THROTTLE:
              name = "Virtual Throttle";
              break;
          default:
              name = "Virtual Joystick";
              break;
          }
      }
      hwdata->name = SDL_strdup(name);
  
      if (hwdata->desc.type == SDL_JOYSTICK_TYPE_GAMECONTROLLER) {
          int i, axis;
  
          if (hwdata->desc.button_mask == 0) {
              for (i = 0; i < hwdata->desc.nbuttons && i < sizeof(hwdata->desc.button_mask)*8; ++i) {
                  hwdata->desc.button_mask |= (1 << i);
              }
          }
  
          if (hwdata->desc.axis_mask == 0) {
              if (hwdata->desc.naxes >= 2) {
                  hwdata->desc.axis_mask |= ((1 << SDL_CONTROLLER_AXIS_LEFTX) | (1 << SDL_CONTROLLER_AXIS_LEFTY));
              }
              if (hwdata->desc.naxes >= 4) {
                  hwdata->desc.axis_mask |= ((1 << SDL_CONTROLLER_AXIS_RIGHTX) | (1 << SDL_CONTROLLER_AXIS_RIGHTY));
              }
              if (hwdata->desc.naxes >= 6) {
                  hwdata->desc.axis_mask |= ((1 << SDL_CONTROLLER_AXIS_TRIGGERLEFT) | (1 << SDL_CONTROLLER_AXIS_TRIGGERRIGHT));
              }
          }
  
          /* Find the trigger axes */
          axis = 0;
          for (i = 0; axis < hwdata->desc.naxes && i < SDL_CONTROLLER_AXIS_MAX; ++i) {
              if (hwdata->desc.axis_mask & (1 << i)) {
                  if (i == SDL_CONTROLLER_AXIS_TRIGGERLEFT) {
                      axis_triggerleft = axis;
                  }
                  if (i == SDL_CONTROLLER_AXIS_TRIGGERRIGHT) {
                      axis_triggerright = axis;
                  }
                  ++axis;
              }
          }
      }
  
      /* We only need 16 bits for each of these; space them out to fill 128. */
      /* Byteswap so devices get same GUID on little/big endian platforms. */
      guid16 = (Uint16 *)hwdata->guid.data;
      *guid16++ = SDL_SwapLE16(SDL_HARDWARE_BUS_VIRTUAL);
      *guid16++ = 0;
      *guid16++ = SDL_SwapLE16(hwdata->desc.vendor_id);
      *guid16++ = 0;
      *guid16++ = SDL_SwapLE16(hwdata->desc.product_id);
      *guid16++ = 0;
      *guid16++ = 0;
      *guid16++ = 0; /* This will be overwritten below with the virtual controller signature */
  
      /* Note that this is a Virtual device and what subtype it is */
      hwdata->guid.data[14] = 'v';
      hwdata->guid.data[15] = (Uint8)hwdata->desc.type;
  
      /* Allocate fields for different control-types */
      if (hwdata->desc.naxes > 0) {
          hwdata->axes = SDL_calloc(hwdata->desc.naxes, sizeof(Sint16));
          if (!hwdata->axes) {
              VIRTUAL_FreeHWData(hwdata);
              return SDL_OutOfMemory();
          }
  
          /* Trigger axes are at minimum value at rest */
          if (axis_triggerleft >= 0) {
              hwdata->axes[axis_triggerleft] = SDL_JOYSTICK_AXIS_MIN;
          }
          if (axis_triggerright >= 0) {
              hwdata->axes[axis_triggerright] = SDL_JOYSTICK_AXIS_MIN;
          }
      }
      if (hwdata->desc.nbuttons > 0) {
          hwdata->buttons = SDL_calloc(hwdata->desc.nbuttons, sizeof(Uint8));
          if (!hwdata->buttons) {
              VIRTUAL_FreeHWData(hwdata);
              return SDL_OutOfMemory();
          }
      }
      if (hwdata->desc.nhats > 0) {
          hwdata->hats = SDL_calloc(hwdata->desc.nhats, sizeof(Uint8));
          if (!hwdata->hats) {
              VIRTUAL_FreeHWData(hwdata);
              return SDL_OutOfMemory();
          }
      }
  
      /* Allocate an instance ID for this device */
      hwdata->instance_id = SDL_GetNextJoystickInstanceID();
  
      /* Add virtual joystick to SDL-global lists */
      if (g_VJoys) {
          joystick_hwdata *last;
  
          for (last = g_VJoys; last->next; last = last->next) {
              continue;
          }
          last->next = hwdata;
      } else {
          g_VJoys = hwdata;
      }
      SDL_PrivateJoystickAdded(hwdata->instance_id);
  
      /* Return the new virtual-device's index */
      device_index = SDL_JoystickGetDeviceIndexFromInstanceID(hwdata->instance_id);
      return device_index;
  }
  
  
  int
  SDL_JoystickDetachVirtualInner(int device_index)
  {
      SDL_JoystickID instance_id;
      joystick_hwdata *hwdata = VIRTUAL_HWDataForIndex(device_index);
      if (!hwdata) {
          return SDL_SetError("Virtual joystick data not found");
      }
      instance_id = hwdata->instance_id;
      VIRTUAL_FreeHWData(hwdata);
      SDL_PrivateJoystickRemoved(instance_id);
      return 0;
  }
  
  
  int
  SDL_JoystickSetVirtualAxisInner(SDL_Joystick *joystick, int axis, Sint16 value)
  {
      joystick_hwdata *hwdata;
  
      SDL_LockJoysticks();
  
      if (!joystick || !joystick->hwdata) {
          SDL_UnlockJoysticks();
          return SDL_SetError("Invalid joystick");
      }
  
      hwdata = (joystick_hwdata *)joystick->hwdata;
      if (axis < 0 || axis >= hwdata->desc.naxes) {
          SDL_UnlockJoysticks();
          return SDL_SetError("Invalid axis index");
      }
  
      hwdata->axes[axis] = value;
  
      SDL_UnlockJoysticks();
      return 0;
  }
  
  
  int
  SDL_JoystickSetVirtualButtonInner(SDL_Joystick *joystick, int button, Uint8 value)
  {
      joystick_hwdata *hwdata;
  
      SDL_LockJoysticks();
  
      if (!joystick || !joystick->hwdata) {
          SDL_UnlockJoysticks();
          return SDL_SetError("Invalid joystick");
      }
  
      hwdata = (joystick_hwdata *)joystick->hwdata;
      if (button < 0 || button >= hwdata->desc.nbuttons) {
          SDL_UnlockJoysticks();
          return SDL_SetError("Invalid button index");
      }
  
      hwdata->buttons[button] = value;
  
      SDL_UnlockJoysticks();
      return 0;
  }
  
  
  int
  SDL_JoystickSetVirtualHatInner(SDL_Joystick *joystick, int hat, Uint8 value)
  {
      joystick_hwdata *hwdata;
  
      SDL_LockJoysticks();
  
      if (!joystick || !joystick->hwdata) {
          SDL_UnlockJoysticks();
          return SDL_SetError("Invalid joystick");
      }
  
      hwdata = (joystick_hwdata *)joystick->hwdata;
      if (hat < 0 || hat >= hwdata->desc.nhats) {
          SDL_UnlockJoysticks();
          return SDL_SetError("Invalid hat index");
      }
  
      hwdata->hats[hat] = value;
  
      SDL_UnlockJoysticks();
      return 0;
  }
  
  
  static int
  VIRTUAL_JoystickInit(void)
  {
      return 0;
  }
  
  
  static int
  VIRTUAL_JoystickGetCount(void)
  {
      int count = 0;
      joystick_hwdata *cur = g_VJoys;
      while (cur) {
          ++count;
          cur = cur->next;
      }
      return count;
  }
  
  
  static void
  VIRTUAL_JoystickDetect(void)
  {
  }
  
  
  static const char *
  VIRTUAL_JoystickGetDeviceName(int device_index)
  {
      joystick_hwdata *hwdata = VIRTUAL_HWDataForIndex(device_index);
      if (!hwdata) {
          return NULL;
      }
      return hwdata->name;
  }
  
  
  static const char *
  VIRTUAL_JoystickGetDevicePath(int device_index)
  {
      return NULL;
  }
  
  
  static int
  VIRTUAL_JoystickGetDevicePlayerIndex(int device_index)
  {
      return -1;
  }
  
  
  static void
  VIRTUAL_JoystickSetDevicePlayerIndex(int device_index, int player_index)
  {
      joystick_hwdata *hwdata = VIRTUAL_HWDataForIndex(device_index);
  
      if (hwdata && hwdata->desc.SetPlayerIndex) {
          hwdata->desc.SetPlayerIndex(hwdata->desc.userdata, player_index);
      }
  }
  
  
  static SDL_JoystickGUID
  VIRTUAL_JoystickGetDeviceGUID(int device_index)
  {
      joystick_hwdata *hwdata = VIRTUAL_HWDataForIndex(device_index);
      if (!hwdata) {
          SDL_JoystickGUID guid;
          SDL_zero(guid);
          return guid;
      }
      return hwdata->guid;
  }
  
  
  static SDL_JoystickID
  VIRTUAL_JoystickGetDeviceInstanceID(int device_index)
  {
      joystick_hwdata *hwdata = VIRTUAL_HWDataForIndex(device_index);
      if (!hwdata) {
          return -1;
      }
      return hwdata->instance_id;
  }
  
  
  static int
  VIRTUAL_JoystickOpen(SDL_Joystick *joystick, int device_index)
  {
      joystick_hwdata *hwdata = VIRTUAL_HWDataForIndex(device_index);
      if (!hwdata) {
          return SDL_SetError("No such device");
      }
      joystick->instance_id = hwdata->instance_id;
      joystick->hwdata = hwdata;
      joystick->naxes = hwdata->desc.naxes;
      joystick->nbuttons = hwdata->desc.nbuttons;
      joystick->nhats = hwdata->desc.nhats;
      hwdata->joystick = joystick;
      return 0;
  }
  
  
  static int
  VIRTUAL_JoystickRumble(SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
  {
      int result;
  
      if (joystick->hwdata) {
          joystick_hwdata *hwdata = joystick->hwdata;
          if (hwdata->desc.Rumble) {
              result = hwdata->desc.Rumble(hwdata->desc.userdata, low_frequency_rumble, high_frequency_rumble);
          } else {
              result = SDL_Unsupported();
          }
      } else {
          result = SDL_SetError("Rumble failed, device disconnected");
      }
  
      return result;
  }
  
  static int
  VIRTUAL_JoystickRumbleTriggers(SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
  {
      int result;
  
      if (joystick->hwdata) {
          joystick_hwdata *hwdata = joystick->hwdata;
          if (hwdata->desc.RumbleTriggers) {
              result = hwdata->desc.RumbleTriggers(hwdata->desc.userdata, left_rumble, right_rumble);
          } else {
              result = SDL_Unsupported();
          }
      } else {
          result = SDL_SetError("Rumble failed, device disconnected");
      }
  
      return result;
  }
  
  
  static Uint32
  VIRTUAL_JoystickGetCapabilities(SDL_Joystick *joystick)
  {
      joystick_hwdata *hwdata = joystick->hwdata;
      Uint32 caps = 0;
  
      if (hwdata) {
          if (hwdata->desc.Rumble) {
              caps |= SDL_JOYCAP_RUMBLE;
          }
          if (hwdata->desc.RumbleTriggers) {
              caps |= SDL_JOYCAP_RUMBLE_TRIGGERS;
          }
          if (hwdata->desc.SetLED) {
              caps |= SDL_JOYCAP_LED;
          }
      }
      return caps;
  }
  
  
  static int
  VIRTUAL_JoystickSetLED(SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue)
  {
      int result;
  
      if (joystick->hwdata) {
          joystick_hwdata *hwdata = joystick->hwdata;
          if (hwdata->desc.SetLED) {
              result = hwdata->desc.SetLED(hwdata->desc.userdata, red, green, blue);
          } else {
              result = SDL_Unsupported();
          }
      } else {
          result = SDL_SetError("SetLED failed, device disconnected");
      }
  
      return result;
  }
  
  static int
  VIRTUAL_JoystickSendEffect(SDL_Joystick *joystick, const void *data, int size)
  {
      int result;
  
      if (joystick->hwdata) {
          joystick_hwdata *hwdata = joystick->hwdata;
          if (hwdata->desc.SendEffect) {
              result = hwdata->desc.SendEffect(hwdata->desc.userdata, data, size);
          } else {
              result = SDL_Unsupported();
          }
      } else {
          result = SDL_SetError("SendEffect failed, device disconnected");
      }
  
      return result;
  }
  
  static int
  VIRTUAL_JoystickSetSensorsEnabled(SDL_Joystick *joystick, SDL_bool enabled)
  {
      return SDL_Unsupported();
  }
  
  
  static void
  VIRTUAL_JoystickUpdate(SDL_Joystick *joystick)
  {
      joystick_hwdata *hwdata;
      int i;
  
      if (!joystick) {
          return;
      }
      if (!joystick->hwdata) {
          return;
      }
  
      hwdata = (joystick_hwdata *)joystick->hwdata;
  
      if (hwdata->desc.Update) {
          hwdata->desc.Update(hwdata->desc.userdata);
      }
  
      for (i = 0; i < hwdata->desc.naxes; ++i) {
          SDL_PrivateJoystickAxis(joystick, i, hwdata->axes[i]);
      }
      for (i = 0; i < hwdata->desc.nbuttons; ++i) {
          SDL_PrivateJoystickButton(joystick, i, hwdata->buttons[i]);
      }
      for (i = 0; i < hwdata->desc.nhats; ++i) {
          SDL_PrivateJoystickHat(joystick, i, hwdata->hats[i]);
      }
  }
  
  
  static void
  VIRTUAL_JoystickClose(SDL_Joystick *joystick)
  {
      if (joystick->hwdata) {
          joystick_hwdata *hwdata = joystick->hwdata;
          hwdata->joystick = NULL;
          joystick->hwdata = NULL;
      }
  }
  
  
  static void
  VIRTUAL_JoystickQuit(void)
  {
      while (g_VJoys) {
          VIRTUAL_FreeHWData(g_VJoys);
      }
  }
  
  static SDL_bool
  VIRTUAL_JoystickGetGamepadMapping(int device_index, SDL_GamepadMapping *out)
  {
      joystick_hwdata *hwdata = VIRTUAL_HWDataForIndex(device_index);
      int current_button = 0;
      int current_axis = 0;
  
      if (hwdata->desc.type != SDL_JOYSTICK_TYPE_GAMECONTROLLER) {
          return SDL_FALSE;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_A))) {
          out->a.kind = EMappingKind_Button;
          out->a.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_B))) {
          out->b.kind = EMappingKind_Button;
          out->b.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_X))) {
          out->x.kind = EMappingKind_Button;
          out->x.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_Y))) {
          out->y.kind = EMappingKind_Button;
          out->y.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_BACK))) {
          out->back.kind = EMappingKind_Button;
          out->back.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_GUIDE))) {
          out->guide.kind = EMappingKind_Button;
          out->guide.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_START))) {
          out->start.kind = EMappingKind_Button;
          out->start.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_LEFTSTICK))) {
          out->leftstick.kind = EMappingKind_Button;
          out->leftstick.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_RIGHTSTICK))) {
          out->rightstick.kind = EMappingKind_Button;
          out->rightstick.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_LEFTSHOULDER))) {
          out->leftshoulder.kind = EMappingKind_Button;
          out->leftshoulder.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_RIGHTSHOULDER))) {
          out->rightshoulder.kind = EMappingKind_Button;
          out->rightshoulder.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_DPAD_UP))) {
          out->dpup.kind = EMappingKind_Button;
          out->dpup.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_DPAD_DOWN))) {
          out->dpdown.kind = EMappingKind_Button;
          out->dpdown.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_DPAD_LEFT))) {
          out->dpleft.kind = EMappingKind_Button;
          out->dpleft.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_DPAD_RIGHT))) {
          out->dpright.kind = EMappingKind_Button;
          out->dpright.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_MISC1))) {
          out->misc1.kind = EMappingKind_Button;
          out->misc1.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_PADDLE1))) {
          out->paddle1.kind = EMappingKind_Button;
          out->paddle1.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_PADDLE2))) {
          out->paddle2.kind = EMappingKind_Button;
          out->paddle2.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_PADDLE3))) {
          out->paddle3.kind = EMappingKind_Button;
          out->paddle3.target = current_button++;
      }
  
      if (current_button < hwdata->desc.nbuttons && (hwdata->desc.button_mask & (1 << SDL_CONTROLLER_BUTTON_PADDLE4))) {
          out->paddle4.kind = EMappingKind_Button;
          out->paddle4.target = current_button++;
      }
  
      if (current_axis < hwdata->desc.naxes && (hwdata->desc.axis_mask & (1 << SDL_CONTROLLER_AXIS_LEFTX))) {
          out->leftx.kind = EMappingKind_Axis;
          out->leftx.target = current_axis++;
      }
  
      if (current_axis < hwdata->desc.naxes && (hwdata->desc.axis_mask & (1 << SDL_CONTROLLER_AXIS_LEFTY))) {
          out->lefty.kind = EMappingKind_Axis;
          out->lefty.target = current_axis++;
      }
  
      if (current_axis < hwdata->desc.naxes && (hwdata->desc.axis_mask & (1 << SDL_CONTROLLER_AXIS_RIGHTX))) {
          out->rightx.kind = EMappingKind_Axis;
          out->rightx.target = current_axis++;
      }
  
      if (current_axis < hwdata->desc.naxes && (hwdata->desc.axis_mask & (1 << SDL_CONTROLLER_AXIS_RIGHTY))) {
          out->righty.kind = EMappingKind_Axis;
          out->righty.target = current_axis++;
      }
  
      if (current_axis < hwdata->desc.naxes && (hwdata->desc.axis_mask & (1 << SDL_CONTROLLER_AXIS_TRIGGERLEFT))) {
          out->lefttrigger.kind = EMappingKind_Axis;
          out->lefttrigger.target = current_axis++;
      }
  
      if (current_axis < hwdata->desc.naxes && (hwdata->desc.axis_mask & (1 << SDL_CONTROLLER_AXIS_TRIGGERRIGHT))) {
          out->righttrigger.kind = EMappingKind_Axis;
          out->righttrigger.target = current_axis++;
      }
  
      return SDL_TRUE;
  }
  
  SDL_JoystickDriver SDL_VIRTUAL_JoystickDriver =
  {
      VIRTUAL_JoystickInit,
      VIRTUAL_JoystickGetCount,
      VIRTUAL_JoystickDetect,
      VIRTUAL_JoystickGetDeviceName,
      VIRTUAL_JoystickGetDevicePath,
      VIRTUAL_JoystickGetDevicePlayerIndex,
      VIRTUAL_JoystickSetDevicePlayerIndex,
      VIRTUAL_JoystickGetDeviceGUID,
      VIRTUAL_JoystickGetDeviceInstanceID,
      VIRTUAL_JoystickOpen,
      VIRTUAL_JoystickRumble,
      VIRTUAL_JoystickRumbleTriggers,
      VIRTUAL_JoystickGetCapabilities,
      VIRTUAL_JoystickSetLED,
      VIRTUAL_JoystickSendEffect,
      VIRTUAL_JoystickSetSensorsEnabled,
      VIRTUAL_JoystickUpdate,
      VIRTUAL_JoystickClose,
      VIRTUAL_JoystickQuit,
      VIRTUAL_JoystickGetGamepadMapping
  };
  
  #endif /* SDL_JOYSTICK_VIRTUAL */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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