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Sweden-Number/dlls/winebus.sys/bus_sdl.c

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/*
* Plug and Play support for hid devices found through SDL2
*
* Copyright 2017 CodeWeavers, Aric Stewart
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SDL_H
# include <SDL.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winreg.h"
#include "winternl.h"
#include "ddk/wdm.h"
#include "ddk/hidtypes.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "hidusage.h"
#ifdef WORDS_BIGENDIAN
# define LE_WORD(x) RtlUshortByteSwap(x)
#else
# define LE_WORD(x) (x)
#endif
#include "bus.h"
WINE_DEFAULT_DEBUG_CHANNEL(plugplay);
#ifdef SONAME_LIBSDL2
WINE_DECLARE_DEBUG_CHANNEL(hid_report);
static const WCHAR sdl_busidW[] = {'S','D','L','J','O','Y',0};
static DWORD map_controllers = 0;
static void *sdl_handle = NULL;
static HANDLE deviceloop_handle;
static UINT quit_event = -1;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f = NULL
MAKE_FUNCPTR(SDL_GetError);
MAKE_FUNCPTR(SDL_Init);
MAKE_FUNCPTR(SDL_JoystickClose);
MAKE_FUNCPTR(SDL_JoystickEventState);
MAKE_FUNCPTR(SDL_JoystickGetGUID);
MAKE_FUNCPTR(SDL_JoystickGetGUIDString);
MAKE_FUNCPTR(SDL_JoystickInstanceID);
MAKE_FUNCPTR(SDL_JoystickName);
MAKE_FUNCPTR(SDL_JoystickNumAxes);
MAKE_FUNCPTR(SDL_JoystickOpen);
MAKE_FUNCPTR(SDL_WaitEvent);
MAKE_FUNCPTR(SDL_JoystickNumButtons);
MAKE_FUNCPTR(SDL_JoystickNumBalls);
MAKE_FUNCPTR(SDL_JoystickNumHats);
MAKE_FUNCPTR(SDL_JoystickGetAxis);
MAKE_FUNCPTR(SDL_JoystickGetHat);
MAKE_FUNCPTR(SDL_IsGameController);
MAKE_FUNCPTR(SDL_GameControllerClose);
MAKE_FUNCPTR(SDL_GameControllerGetAxis);
MAKE_FUNCPTR(SDL_GameControllerGetButton);
MAKE_FUNCPTR(SDL_GameControllerName);
MAKE_FUNCPTR(SDL_GameControllerOpen);
MAKE_FUNCPTR(SDL_GameControllerEventState);
MAKE_FUNCPTR(SDL_HapticClose);
MAKE_FUNCPTR(SDL_HapticDestroyEffect);
MAKE_FUNCPTR(SDL_HapticNewEffect);
MAKE_FUNCPTR(SDL_HapticOpenFromJoystick);
MAKE_FUNCPTR(SDL_HapticQuery);
MAKE_FUNCPTR(SDL_HapticRumbleInit);
MAKE_FUNCPTR(SDL_HapticRumblePlay);
MAKE_FUNCPTR(SDL_HapticRumbleSupported);
MAKE_FUNCPTR(SDL_HapticRunEffect);
MAKE_FUNCPTR(SDL_HapticStopAll);
MAKE_FUNCPTR(SDL_JoystickIsHaptic);
MAKE_FUNCPTR(SDL_memset);
MAKE_FUNCPTR(SDL_GameControllerAddMapping);
MAKE_FUNCPTR(SDL_RegisterEvents);
MAKE_FUNCPTR(SDL_PushEvent);
static Uint16 (*pSDL_JoystickGetProduct)(SDL_Joystick * joystick);
static Uint16 (*pSDL_JoystickGetProductVersion)(SDL_Joystick * joystick);
static Uint16 (*pSDL_JoystickGetVendor)(SDL_Joystick * joystick);
struct platform_private
{
SDL_Joystick *sdl_joystick;
SDL_GameController *sdl_controller;
SDL_JoystickID id;
int button_start;
int axis_start;
int ball_start;
int hat_bit_offs; /* hatswitches are reported in the same bytes as buttons */
struct hid_descriptor desc;
int buffer_length;
BYTE *report_buffer;
SDL_Haptic *sdl_haptic;
int haptic_effect_id;
};
static inline struct platform_private *impl_from_DEVICE_OBJECT(DEVICE_OBJECT *device)
{
return (struct platform_private *)get_platform_private(device);
}
#define CONTROLLER_NUM_BUTTONS 11
#define CONTROLLER_NUM_AXES 6
#define CONTROLLER_NUM_HATSWITCHES 1
static void set_button_value(struct platform_private *ext, int index, int value)
{
int byte_index = ext->button_start + index / 8;
int bit_index = index % 8;
BYTE mask = 1 << bit_index;
if (value)
{
ext->report_buffer[byte_index] = ext->report_buffer[byte_index] | mask;
}
else
{
mask = ~mask;
ext->report_buffer[byte_index] = ext->report_buffer[byte_index] & mask;
}
}
static void set_axis_value(struct platform_private *ext, int index, short value, BOOL controller)
{
WORD *report = (WORD *)(ext->report_buffer + ext->axis_start);
if (controller && (index == SDL_CONTROLLER_AXIS_TRIGGERLEFT || index == SDL_CONTROLLER_AXIS_TRIGGERRIGHT))
report[index] = LE_WORD(value);
else
report[index] = LE_WORD(value) + 32768;
}
static void set_ball_value(struct platform_private *ext, int index, int value1, int value2)
{
int offset;
offset = ext->ball_start + (index * sizeof(WORD));
if (value1 > 127) value1 = 127;
if (value1 < -127) value1 = -127;
if (value2 > 127) value2 = 127;
if (value2 < -127) value2 = -127;
*((WORD*)&ext->report_buffer[offset]) = LE_WORD(value1);
*((WORD*)&ext->report_buffer[offset + sizeof(WORD)]) = LE_WORD(value2);
}
static void set_hat_value(struct platform_private *ext, int index, int value)
{
int byte = ext->button_start + (ext->hat_bit_offs + 4 * index) / 8;
int bit_offs = (ext->hat_bit_offs + 4 * index) % 8;
int num_low_bits, num_high_bits;
unsigned char val, low_mask, high_mask;
/* 4-bit hatswitch value is packed into button bytes */
if (bit_offs <= 4)
{
num_low_bits = 4;
num_high_bits = 0;
low_mask = 0xf;
high_mask = 0;
}
else
{
num_low_bits = 8 - bit_offs;
num_high_bits = 4 - num_low_bits;
low_mask = (1 << num_low_bits) - 1;
high_mask = (1 << num_high_bits) - 1;
}
switch (value)
{
/* 8 1 2
* 7 0 3
* 6 5 4 */
case SDL_HAT_CENTERED: val = 0; break;
case SDL_HAT_UP: val = 1; break;
case SDL_HAT_RIGHTUP: val = 2; break;
case SDL_HAT_RIGHT: val = 3; break;
case SDL_HAT_RIGHTDOWN: val = 4; break;
case SDL_HAT_DOWN: val = 5; break;
case SDL_HAT_LEFTDOWN: val = 6; break;
case SDL_HAT_LEFT: val = 7; break;
case SDL_HAT_LEFTUP: val = 8; break;
default: return;
}
ext->report_buffer[byte] &= ~(low_mask << bit_offs);
ext->report_buffer[byte] |= (val & low_mask) << bit_offs;
if (high_mask)
{
ext->report_buffer[byte + 1] &= ~high_mask;
ext->report_buffer[byte + 1] |= val & high_mask;
}
}
static BOOL descriptor_add_haptic(struct platform_private *ext)
{
if (pSDL_JoystickIsHaptic(ext->sdl_joystick))
{
ext->sdl_haptic = pSDL_HapticOpenFromJoystick(ext->sdl_joystick);
if (ext->sdl_haptic &&
((pSDL_HapticQuery(ext->sdl_haptic) & SDL_HAPTIC_LEFTRIGHT) != 0 ||
pSDL_HapticRumbleSupported(ext->sdl_haptic)))
{
pSDL_HapticStopAll(ext->sdl_haptic);
pSDL_HapticRumbleInit(ext->sdl_haptic);
if (!hid_descriptor_add_haptics(&ext->desc))
return FALSE;
ext->haptic_effect_id = -1;
}
else
{
pSDL_HapticClose(ext->sdl_haptic);
ext->sdl_haptic = NULL;
}
}
return TRUE;
}
static NTSTATUS build_report_descriptor(struct platform_private *ext)
{
INT i;
INT report_size;
INT button_count, axis_count, ball_count, hat_count;
static const USAGE device_usage[2] = {HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_GAMEPAD};
static const USAGE controller_usages[] = {
HID_USAGE_GENERIC_X,
HID_USAGE_GENERIC_Y,
HID_USAGE_GENERIC_Z,
HID_USAGE_GENERIC_RX,
HID_USAGE_GENERIC_RY,
HID_USAGE_GENERIC_RZ,
HID_USAGE_GENERIC_SLIDER,
HID_USAGE_GENERIC_DIAL,
HID_USAGE_GENERIC_WHEEL};
static const USAGE joystick_usages[] = {
HID_USAGE_GENERIC_X,
HID_USAGE_GENERIC_Y,
HID_USAGE_GENERIC_Z,
HID_USAGE_GENERIC_RZ,
HID_USAGE_GENERIC_RX,
HID_USAGE_GENERIC_RY,
HID_USAGE_GENERIC_SLIDER,
HID_USAGE_GENERIC_DIAL,
HID_USAGE_GENERIC_WHEEL};
report_size = 0;
axis_count = pSDL_JoystickNumAxes(ext->sdl_joystick);
if (axis_count > 6)
{
FIXME("Clamping joystick to 6 axis\n");
axis_count = 6;
}
ext->axis_start = report_size;
if (axis_count)
{
report_size += (sizeof(WORD) * axis_count);
}
ball_count = pSDL_JoystickNumBalls(ext->sdl_joystick);
ext->ball_start = report_size;
if (ball_count)
{
if ((ball_count*2) + axis_count > 9)
{
FIXME("Capping ball + axis at 9\n");
ball_count = (9-axis_count)/2;
}
report_size += (sizeof(WORD) * 2 * ball_count);
}
/* For now lump all buttons just into incremental usages, Ignore Keys */
button_count = pSDL_JoystickNumButtons(ext->sdl_joystick);
ext->button_start = report_size;
hat_count = pSDL_JoystickNumHats(ext->sdl_joystick);
ext->hat_bit_offs = button_count;
report_size += (button_count + hat_count * 4 + 7) / 8;
TRACE("Report will be %i bytes\n", report_size);
if (!hid_descriptor_begin(&ext->desc, device_usage[0], device_usage[1]))
return STATUS_NO_MEMORY;
if (axis_count == 6 && button_count >= 14)
{
if (!hid_descriptor_add_axes(&ext->desc, axis_count, HID_USAGE_PAGE_GENERIC,
controller_usages, FALSE, 16, 0, 0xffff))
return STATUS_NO_MEMORY;
}
else if (axis_count)
{
if (!hid_descriptor_add_axes(&ext->desc, axis_count, HID_USAGE_PAGE_GENERIC,
joystick_usages, FALSE, 16, 0, 0xffff))
return STATUS_NO_MEMORY;
}
if (ball_count && !hid_descriptor_add_axes(&ext->desc, ball_count * 2, HID_USAGE_PAGE_GENERIC,
&joystick_usages[axis_count], TRUE, 8, 0x81, 0x7f))
return STATUS_NO_MEMORY;
if (button_count && !hid_descriptor_add_buttons(&ext->desc, HID_USAGE_PAGE_BUTTON, 1, button_count))
return STATUS_NO_MEMORY;
if (hat_count && !hid_descriptor_add_hatswitch(&ext->desc, hat_count))
return STATUS_NO_MEMORY;
if (!descriptor_add_haptic(ext))
return STATUS_NO_MEMORY;
if (!hid_descriptor_end(&ext->desc))
return STATUS_NO_MEMORY;
ext->buffer_length = report_size;
if (!(ext->report_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, report_size)))
goto failed;
/* Initialize axis in the report */
for (i = 0; i < axis_count; i++)
set_axis_value(ext, i, pSDL_JoystickGetAxis(ext->sdl_joystick, i), FALSE);
for (i = 0; i < hat_count; i++)
set_hat_value(ext, i, pSDL_JoystickGetHat(ext->sdl_joystick, i));
return STATUS_SUCCESS;
failed:
HeapFree(GetProcessHeap(), 0, ext->report_buffer);
hid_descriptor_free(&ext->desc);
return STATUS_NO_MEMORY;
}
static SHORT compose_dpad_value(SDL_GameController *joystick)
{
if (pSDL_GameControllerGetButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_UP))
{
if (pSDL_GameControllerGetButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT))
return SDL_HAT_RIGHTUP;
if (pSDL_GameControllerGetButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_LEFT))
return SDL_HAT_LEFTUP;
return SDL_HAT_UP;
}
if (pSDL_GameControllerGetButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_DOWN))
{
if (pSDL_GameControllerGetButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT))
return SDL_HAT_RIGHTDOWN;
if (pSDL_GameControllerGetButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_LEFT))
return SDL_HAT_LEFTDOWN;
return SDL_HAT_DOWN;
}
if (pSDL_GameControllerGetButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT))
return SDL_HAT_RIGHT;
if (pSDL_GameControllerGetButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_LEFT))
return SDL_HAT_LEFT;
return SDL_HAT_CENTERED;
}
static NTSTATUS build_mapped_report_descriptor(struct platform_private *ext)
{
static const USAGE left_axis_usages[] = {HID_USAGE_GENERIC_X, HID_USAGE_GENERIC_Y};
static const USAGE right_axis_usages[] = {HID_USAGE_GENERIC_RX, HID_USAGE_GENERIC_RY};
static const USAGE trigger_axis_usages[] = {HID_USAGE_GENERIC_Z, HID_USAGE_GENERIC_RZ};
INT i;
static const int BUTTON_BIT_COUNT = CONTROLLER_NUM_BUTTONS + CONTROLLER_NUM_HATSWITCHES * 4;
ext->axis_start = 0;
ext->button_start = CONTROLLER_NUM_AXES * sizeof(WORD);
ext->hat_bit_offs = CONTROLLER_NUM_BUTTONS;
ext->buffer_length = (BUTTON_BIT_COUNT + 7) / 8
+ CONTROLLER_NUM_AXES * sizeof(WORD)
+ 2/* unknown constant*/;
TRACE("Report will be %i bytes\n", ext->buffer_length);
if (!hid_descriptor_begin(&ext->desc, HID_USAGE_PAGE_GENERIC, HID_USAGE_GENERIC_GAMEPAD))
return STATUS_NO_MEMORY;
if (!hid_descriptor_add_axes(&ext->desc, 2, HID_USAGE_PAGE_GENERIC, left_axis_usages,
FALSE, 16, 0, 0xffff))
return STATUS_NO_MEMORY;
if (!hid_descriptor_add_axes(&ext->desc, 2, HID_USAGE_PAGE_GENERIC, right_axis_usages,
FALSE, 16, 0, 0xffff))
return STATUS_NO_MEMORY;
if (!hid_descriptor_add_axes(&ext->desc, 2, HID_USAGE_PAGE_GENERIC, trigger_axis_usages,
FALSE, 16, 0, 0x7fff))
return STATUS_NO_MEMORY;
if (!hid_descriptor_add_buttons(&ext->desc, HID_USAGE_PAGE_BUTTON, 1, CONTROLLER_NUM_BUTTONS))
return STATUS_NO_MEMORY;
if (!hid_descriptor_add_hatswitch(&ext->desc, 1))
return STATUS_NO_MEMORY;
if (BUTTON_BIT_COUNT % 8 != 0)
{
/* unused bits between hatswitch and following constant */
if (!hid_descriptor_add_padding(&ext->desc, 8 - (BUTTON_BIT_COUNT % 8)))
return STATUS_NO_MEMORY;
}
/* unknown constant */
if (!hid_descriptor_add_padding(&ext->desc, 16))
return STATUS_NO_MEMORY;
if (!descriptor_add_haptic(ext))
return STATUS_NO_MEMORY;
if (!hid_descriptor_end(&ext->desc))
return STATUS_NO_MEMORY;
if (!(ext->report_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ext->buffer_length)))
goto failed;
/* Initialize axis in the report */
for (i = SDL_CONTROLLER_AXIS_LEFTX; i < SDL_CONTROLLER_AXIS_MAX; i++)
set_axis_value(ext, i, pSDL_GameControllerGetAxis(ext->sdl_controller, i), TRUE);
set_hat_value(ext, 0, compose_dpad_value(ext->sdl_controller));
/* unknown constant */
ext->report_buffer[14] = 0x89;
ext->report_buffer[15] = 0xc5;
return STATUS_SUCCESS;
failed:
HeapFree(GetProcessHeap(), 0, ext->report_buffer);
hid_descriptor_free(&ext->desc);
return STATUS_NO_MEMORY;
}
static void free_device(DEVICE_OBJECT *device)
{
struct platform_private *ext = impl_from_DEVICE_OBJECT(device);
pSDL_JoystickClose(ext->sdl_joystick);
if (ext->sdl_controller)
pSDL_GameControllerClose(ext->sdl_controller);
if (ext->sdl_haptic)
pSDL_HapticClose(ext->sdl_haptic);
}
static int compare_platform_device(DEVICE_OBJECT *device, void *context)
{
return impl_from_DEVICE_OBJECT(device)->id - PtrToUlong(context);
}
static NTSTATUS get_reportdescriptor(DEVICE_OBJECT *device, BYTE *buffer, DWORD length, DWORD *out_length)
{
struct platform_private *ext = impl_from_DEVICE_OBJECT(device);
*out_length = ext->desc.size;
if (length < ext->desc.size) return STATUS_BUFFER_TOO_SMALL;
memcpy(buffer, ext->desc.data, ext->desc.size);
return STATUS_SUCCESS;
}
static NTSTATUS get_string(DEVICE_OBJECT *device, DWORD index, WCHAR *buffer, DWORD length)
{
struct platform_private *ext = impl_from_DEVICE_OBJECT(device);
const char* str = NULL;
switch (index)
{
case HID_STRING_ID_IPRODUCT:
if (ext->sdl_controller)
str = pSDL_GameControllerName(ext->sdl_controller);
else
str = pSDL_JoystickName(ext->sdl_joystick);
break;
case HID_STRING_ID_IMANUFACTURER:
str = "SDL";
break;
case HID_STRING_ID_ISERIALNUMBER:
str = "000000";
break;
default:
ERR("Unhandled string index %i\n", index);
}
if (str && str[0])
MultiByteToWideChar(CP_ACP, 0, str, -1, buffer, length);
else
buffer[0] = 0;
return STATUS_SUCCESS;
}
static NTSTATUS begin_report_processing(DEVICE_OBJECT *device)
{
return STATUS_SUCCESS;
}
static NTSTATUS set_output_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *written)
{
struct platform_private *ext = impl_from_DEVICE_OBJECT(device);
if (ext->sdl_haptic && id == 0)
{
WORD left = report[2] * 128;
WORD right = report[3] * 128;
if (ext->haptic_effect_id >= 0)
{
pSDL_HapticDestroyEffect(ext->sdl_haptic, ext->haptic_effect_id);
ext->haptic_effect_id = -1;
}
pSDL_HapticStopAll(ext->sdl_haptic);
if (left != 0 || right != 0)
{
SDL_HapticEffect effect;
pSDL_memset( &effect, 0, sizeof(SDL_HapticEffect) );
effect.type = SDL_HAPTIC_LEFTRIGHT;
effect.leftright.length = -1;
effect.leftright.large_magnitude = left;
effect.leftright.small_magnitude = right;
ext->haptic_effect_id = pSDL_HapticNewEffect(ext->sdl_haptic, &effect);
if (ext->haptic_effect_id >= 0)
{
pSDL_HapticRunEffect(ext->sdl_haptic, ext->haptic_effect_id, 1);
}
else
{
float i = (float)((left + right)/2.0) / 32767.0;
pSDL_HapticRumblePlay(ext->sdl_haptic, i, -1);
}
}
*written = length;
return STATUS_SUCCESS;
}
else
{
*written = 0;
return STATUS_NOT_IMPLEMENTED;
}
}
static NTSTATUS get_feature_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *read)
{
*read = 0;
return STATUS_NOT_IMPLEMENTED;
}
static NTSTATUS set_feature_report(DEVICE_OBJECT *device, UCHAR id, BYTE *report, DWORD length, ULONG_PTR *written)
{
*written = 0;
return STATUS_NOT_IMPLEMENTED;
}
static const platform_vtbl sdl_vtbl =
{
free_device,
compare_platform_device,
get_reportdescriptor,
get_string,
begin_report_processing,
set_output_report,
get_feature_report,
set_feature_report,
};
static BOOL set_report_from_event(DEVICE_OBJECT *device, SDL_Event *event)
{
struct platform_private *private;
private = impl_from_DEVICE_OBJECT(device);
if (private->sdl_controller)
{
/* We want mapped events */
return TRUE;
}
switch(event->type)
{
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
{
SDL_JoyButtonEvent *ie = &event->jbutton;
set_button_value(private, ie->button, ie->state);
process_hid_report(device, private->report_buffer, private->buffer_length);
break;
}
case SDL_JOYAXISMOTION:
{
SDL_JoyAxisEvent *ie = &event->jaxis;
if (ie->axis < 6)
{
set_axis_value(private, ie->axis, ie->value, FALSE);
process_hid_report(device, private->report_buffer, private->buffer_length);
}
break;
}
case SDL_JOYBALLMOTION:
{
SDL_JoyBallEvent *ie = &event->jball;
set_ball_value(private, ie->ball, ie->xrel, ie->yrel);
process_hid_report(device, private->report_buffer, private->buffer_length);
break;
}
case SDL_JOYHATMOTION:
{
SDL_JoyHatEvent *ie = &event->jhat;
set_hat_value(private, ie->hat, ie->value);
process_hid_report(device, private->report_buffer, private->buffer_length);
break;
}
default:
ERR("TODO: Process Report (0x%x)\n",event->type);
}
return FALSE;
}
static BOOL set_mapped_report_from_event(DEVICE_OBJECT *device, SDL_Event *event)
{
struct platform_private *private;
private = impl_from_DEVICE_OBJECT(device);
switch(event->type)
{
case SDL_CONTROLLERBUTTONDOWN:
case SDL_CONTROLLERBUTTONUP:
{
int usage = -1;
SDL_ControllerButtonEvent *ie = &event->cbutton;
switch (ie->button)
{
case SDL_CONTROLLER_BUTTON_A: usage = 0; break;
case SDL_CONTROLLER_BUTTON_B: usage = 1; break;
case SDL_CONTROLLER_BUTTON_X: usage = 2; break;
case SDL_CONTROLLER_BUTTON_Y: usage = 3; break;
case SDL_CONTROLLER_BUTTON_LEFTSHOULDER: usage = 4; break;
case SDL_CONTROLLER_BUTTON_RIGHTSHOULDER: usage = 5; break;
case SDL_CONTROLLER_BUTTON_BACK: usage = 6; break;
case SDL_CONTROLLER_BUTTON_START: usage = 7; break;
case SDL_CONTROLLER_BUTTON_LEFTSTICK: usage = 8; break;
case SDL_CONTROLLER_BUTTON_RIGHTSTICK: usage = 9; break;
case SDL_CONTROLLER_BUTTON_GUIDE: usage = 10; break;
case SDL_CONTROLLER_BUTTON_DPAD_UP:
case SDL_CONTROLLER_BUTTON_DPAD_DOWN:
case SDL_CONTROLLER_BUTTON_DPAD_LEFT:
case SDL_CONTROLLER_BUTTON_DPAD_RIGHT:
set_hat_value(private, 0, compose_dpad_value(private->sdl_controller));
process_hid_report(device, private->report_buffer, private->buffer_length);
break;
default:
ERR("Unknown Button %i\n",ie->button);
}
if (usage >= 0)
{
set_button_value(private, usage, ie->state);
process_hid_report(device, private->report_buffer, private->buffer_length);
}
break;
}
case SDL_CONTROLLERAXISMOTION:
{
SDL_ControllerAxisEvent *ie = &event->caxis;
set_axis_value(private, ie->axis, ie->value, TRUE);
process_hid_report(device, private->report_buffer, private->buffer_length);
break;
}
default:
ERR("TODO: Process Report (%x)\n",event->type);
}
return FALSE;
}
static void try_remove_device(DEVICE_OBJECT *device)
{
bus_unlink_hid_device(device);
IoInvalidateDeviceRelations(bus_pdo, BusRelations);
}
static void try_add_device(unsigned int index)
{
DWORD vid = 0, pid = 0, version = 0;
DEVICE_OBJECT *device = NULL;
WCHAR serial[34] = {0};
char guid_str[34];
BOOL is_xbox_gamepad;
WORD input = -1;
SDL_Joystick* joystick;
SDL_JoystickID id;
SDL_JoystickGUID guid;
SDL_GameController *controller = NULL;
if ((joystick = pSDL_JoystickOpen(index)) == NULL)
{
WARN("Unable to open sdl device %i: %s\n", index, pSDL_GetError());
return;
}
if (map_controllers && pSDL_IsGameController(index))
controller = pSDL_GameControllerOpen(index);
id = pSDL_JoystickInstanceID(joystick);
if (pSDL_JoystickGetProductVersion != NULL) {
vid = pSDL_JoystickGetVendor(joystick);
pid = pSDL_JoystickGetProduct(joystick);
version = pSDL_JoystickGetProductVersion(joystick);
}
else
{
vid = 0x01;
pid = pSDL_JoystickInstanceID(joystick) + 1;
version = 0;
}
guid = pSDL_JoystickGetGUID(joystick);
pSDL_JoystickGetGUIDString(guid, guid_str, sizeof(guid_str));
MultiByteToWideChar(CP_ACP, 0, guid_str, -1, serial, sizeof(guid_str));
if (controller)
{
TRACE("Found sdl game controller %i (vid %04x, pid %04x, version %u, serial %s)\n",
id, vid, pid, version, debugstr_w(serial));
is_xbox_gamepad = TRUE;
}
else
{
int button_count, axis_count;
TRACE("Found sdl device %i (vid %04x, pid %04x, version %u, serial %s)\n",
id, vid, pid, version, debugstr_w(serial));
axis_count = pSDL_JoystickNumAxes(joystick);
button_count = pSDL_JoystickNumButtons(joystick);
is_xbox_gamepad = (axis_count == 6 && button_count >= 14);
}
if (is_xbox_gamepad)
input = 0;
device = bus_create_hid_device(sdl_busidW, vid, pid, input, version, index,
serial, is_xbox_gamepad, &sdl_vtbl, sizeof(struct platform_private));
if (device)
{
NTSTATUS status;
struct platform_private *private = impl_from_DEVICE_OBJECT(device);
private->sdl_joystick = joystick;
private->sdl_controller = controller;
private->id = id;
/* FIXME: We should probably move this to IRP_MN_START_DEVICE. */
if (controller)
status = build_mapped_report_descriptor(private);
else
status = build_report_descriptor(private);
if (status)
{
ERR("Building report descriptor failed, removing device\n");
bus_unlink_hid_device(device);
bus_remove_hid_device(device);
HeapFree(GetProcessHeap(), 0, serial);
return;
}
IoInvalidateDeviceRelations(bus_pdo, BusRelations);
}
else
{
WARN("Ignoring device %i\n", id);
}
}
static void process_device_event(SDL_Event *event)
{
DEVICE_OBJECT *device;
SDL_JoystickID id;
TRACE_(hid_report)("Received action %x\n", event->type);
if (event->type == SDL_JOYDEVICEADDED)
try_add_device(((SDL_JoyDeviceEvent*)event)->which);
else if (event->type == SDL_JOYDEVICEREMOVED)
{
id = ((SDL_JoyDeviceEvent *)event)->which;
device = bus_find_hid_device(sdl_busidW, ULongToPtr(id));
if (device) try_remove_device(device);
else WARN("failed to find device with id %d\n", id);
}
else if (event->type >= SDL_JOYAXISMOTION && event->type <= SDL_JOYBUTTONUP)
{
id = ((SDL_JoyButtonEvent *)event)->which;
device = bus_find_hid_device(sdl_busidW, ULongToPtr(id));
if (device) set_report_from_event(device, event);
else WARN("failed to find device with id %d\n", id);
}
else if (event->type >= SDL_CONTROLLERAXISMOTION && event->type <= SDL_CONTROLLERBUTTONUP)
{
id = ((SDL_ControllerButtonEvent *)event)->which;
device = bus_find_hid_device(sdl_busidW, ULongToPtr(id));
if (device) set_mapped_report_from_event(device, event);
else WARN("failed to find device with id %d\n", id);
}
}
static void sdl_load_mappings(void)
{
HKEY key;
static const WCHAR szPath[] = {'m','a','p',0};
const char *mapping;
if ((mapping = getenv("SDL_GAMECONTROLLERCONFIG")))
{
TRACE("Setting environment mapping %s\n", debugstr_a(mapping));
if (pSDL_GameControllerAddMapping(mapping) < 0)
WARN("Failed to add environment mapping %s\n", pSDL_GetError());
}
else if (!RegOpenKeyExW(driver_key, szPath, 0, KEY_QUERY_VALUE, &key))
{
DWORD index = 0;
CHAR *buffer = NULL;
DWORD buffer_len = 0;
LSTATUS rc;
do
{
CHAR name[255];
DWORD name_len;
DWORD type;
DWORD data_len = buffer_len;
name_len = sizeof(name);
rc = RegEnumValueA(key, index, name, &name_len, NULL, &type, (LPBYTE)buffer, &data_len);
if (rc == ERROR_MORE_DATA || buffer == NULL)
{
if (buffer) buffer = HeapReAlloc(GetProcessHeap(), 0, buffer, data_len);
else buffer = HeapAlloc(GetProcessHeap(), 0, data_len);
buffer_len = data_len;
name_len = sizeof(name);
rc = RegEnumValueA(key, index, name, &name_len, NULL, &type, (LPBYTE)buffer, &data_len);
}
if (rc == STATUS_SUCCESS)
{
TRACE("Setting registry mapping %s\n", debugstr_a(buffer));
if (pSDL_GameControllerAddMapping(buffer) < 0)
WARN("Failed to add registry mapping %s\n", pSDL_GetError());
index++;
}
} while (rc == STATUS_SUCCESS);
HeapFree(GetProcessHeap(), 0, buffer);
NtClose(key);
}
}
static DWORD CALLBACK deviceloop_thread(void *args)
{
HANDLE init_done = args;
SDL_Event event;
if (pSDL_Init(SDL_INIT_GAMECONTROLLER|SDL_INIT_HAPTIC) < 0)
{
ERR("Can't init SDL: %s\n", pSDL_GetError());
return STATUS_UNSUCCESSFUL;
}
pSDL_JoystickEventState(SDL_ENABLE);
pSDL_GameControllerEventState(SDL_ENABLE);
/* Process mappings */
if (pSDL_GameControllerAddMapping != NULL) sdl_load_mappings();
SetEvent(init_done);
while (1) {
while (pSDL_WaitEvent(&event) != 0) {
if (event.type == quit_event) {
TRACE("Device thread exiting\n");
return 0;
}
process_device_event(&event);
}
}
}
void sdl_driver_unload( void )
{
SDL_Event event;
TRACE("Unload Driver\n");
if (!deviceloop_handle)
return;
quit_event = pSDL_RegisterEvents(1);
if (quit_event == -1) {
ERR("error registering quit event\n");
return;
}
event.type = quit_event;
if (pSDL_PushEvent(&event) != 1) {
ERR("error pushing quit event\n");
return;
}
WaitForSingleObject(deviceloop_handle, INFINITE);
CloseHandle(deviceloop_handle);
dlclose(sdl_handle);
}
static BOOL sdl_initialize(void)
{
if (!(sdl_handle = dlopen(SONAME_LIBSDL2, RTLD_NOW)))
{
WARN("could not load %s\n", SONAME_LIBSDL2);
return FALSE;
}
#define LOAD_FUNCPTR(f) \
if ((p##f = dlsym(sdl_handle, #f)) == NULL) \
{ \
WARN("could not find symbol %s\n", #f); \
goto failed; \
}
LOAD_FUNCPTR(SDL_GetError);
LOAD_FUNCPTR(SDL_Init);
LOAD_FUNCPTR(SDL_JoystickClose);
LOAD_FUNCPTR(SDL_JoystickEventState);
LOAD_FUNCPTR(SDL_JoystickGetGUID);
LOAD_FUNCPTR(SDL_JoystickGetGUIDString);
LOAD_FUNCPTR(SDL_JoystickInstanceID);
LOAD_FUNCPTR(SDL_JoystickName);
LOAD_FUNCPTR(SDL_JoystickNumAxes);
LOAD_FUNCPTR(SDL_JoystickOpen);
LOAD_FUNCPTR(SDL_WaitEvent);
LOAD_FUNCPTR(SDL_JoystickNumButtons);
LOAD_FUNCPTR(SDL_JoystickNumBalls);
LOAD_FUNCPTR(SDL_JoystickNumHats);
LOAD_FUNCPTR(SDL_JoystickGetAxis);
LOAD_FUNCPTR(SDL_JoystickGetHat);
LOAD_FUNCPTR(SDL_IsGameController);
LOAD_FUNCPTR(SDL_GameControllerClose);
LOAD_FUNCPTR(SDL_GameControllerGetAxis);
LOAD_FUNCPTR(SDL_GameControllerGetButton);
LOAD_FUNCPTR(SDL_GameControllerName);
LOAD_FUNCPTR(SDL_GameControllerOpen);
LOAD_FUNCPTR(SDL_GameControllerEventState);
LOAD_FUNCPTR(SDL_HapticClose);
LOAD_FUNCPTR(SDL_HapticDestroyEffect);
LOAD_FUNCPTR(SDL_HapticNewEffect);
LOAD_FUNCPTR(SDL_HapticOpenFromJoystick);
LOAD_FUNCPTR(SDL_HapticQuery);
LOAD_FUNCPTR(SDL_HapticRumbleInit);
LOAD_FUNCPTR(SDL_HapticRumblePlay);
LOAD_FUNCPTR(SDL_HapticRumbleSupported);
LOAD_FUNCPTR(SDL_HapticRunEffect);
LOAD_FUNCPTR(SDL_HapticStopAll);
LOAD_FUNCPTR(SDL_JoystickIsHaptic);
LOAD_FUNCPTR(SDL_memset);
LOAD_FUNCPTR(SDL_GameControllerAddMapping);
LOAD_FUNCPTR(SDL_RegisterEvents);
LOAD_FUNCPTR(SDL_PushEvent);
#undef LOAD_FUNCPTR
pSDL_JoystickGetProduct = dlsym(sdl_handle, "SDL_JoystickGetProduct");
pSDL_JoystickGetProductVersion = dlsym(sdl_handle, "SDL_JoystickGetProductVersion");
pSDL_JoystickGetVendor = dlsym(sdl_handle, "SDL_JoystickGetVendor");
return TRUE;
failed:
dlclose(sdl_handle);
sdl_handle = NULL;
return FALSE;
}
NTSTATUS sdl_driver_init(void)
{
static const WCHAR controller_modeW[] = {'M','a','p',' ','C','o','n','t','r','o','l','l','e','r','s',0};
static const UNICODE_STRING controller_mode = {sizeof(controller_modeW) - sizeof(WCHAR), sizeof(controller_modeW), (WCHAR*)controller_modeW};
HANDLE events[2];
DWORD result;
if (!sdl_handle && !sdl_initialize()) return STATUS_UNSUCCESSFUL;
map_controllers = check_bus_option(&controller_mode, 1);
if (!(events[0] = CreateEventW(NULL, TRUE, FALSE, NULL)))
{
WARN("CreateEvent failed\n");
return STATUS_UNSUCCESSFUL;
}
if (!(events[1] = CreateThread(NULL, 0, deviceloop_thread, events[0], 0, NULL)))
{
WARN("CreateThread failed\n");
CloseHandle(events[0]);
return STATUS_UNSUCCESSFUL;
}
result = WaitForMultipleObjects(2, events, FALSE, INFINITE);
CloseHandle(events[0]);
if (result == WAIT_OBJECT_0)
{
TRACE("Initialization successful\n");
deviceloop_handle = events[1];
return STATUS_SUCCESS;
}
CloseHandle(events[1]);
dlclose(sdl_handle);
sdl_handle = NULL;
return STATUS_UNSUCCESSFUL;
}
#else
NTSTATUS sdl_driver_init(void)
{
return STATUS_NOT_IMPLEMENTED;
}
void sdl_driver_unload( void )
{
TRACE("Stub: Unload Driver\n");
}
#endif /* SONAME_LIBSDL2 */
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