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RetroArch/input/drivers_joypad/dinput_joypad.c
twinaphex e986b9e42a Static code analysis cleanups
2015-09-29 17:35:28 +02:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <windowsx.h>
#include <dinput.h>
#include <boolean.h>
#include <retro_log.h>
#include "../../general.h"
#include "../input_autodetect.h"
#include "../input_common.h"
#include "../input_joypad.h"
#include "../input_keymaps.h"
struct dinput_joypad
{
LPDIRECTINPUTDEVICE8 joypad;
DIJOYSTATE2 joy_state;
char* joy_name;
char* joy_friendly_name;
int32_t vid;
int32_t pid;
};
static struct dinput_joypad g_pads[MAX_USERS];
static unsigned g_joypad_cnt;
static unsigned g_last_xinput_pad_idx;
static const GUID common_xinput_guids[] = {
{MAKELONG(0x28DE, 0x11FF),0x0000,0x0000,{0x00,0x00,0x50,0x49,0x44,0x56,0x49,0x44}}, /* Valve streaming pad */
{MAKELONG(0x045E, 0x02A1),0x0000,0x0000,{0x00,0x00,0x50,0x49,0x44,0x56,0x49,0x44}}, /* Wired 360 pad */
{MAKELONG(0x045E, 0x028E),0x0000,0x0000,{0x00,0x00,0x50,0x49,0x44,0x56,0x49,0x44}} /* wireless 360 pad */
};
/* forward declarations */
void dinput_destroy_context(void);
bool dinput_init_context(void);
extern bool g_xinput_block_pads;
extern int g_xinput_pad_indexes[MAX_USERS];
extern LPDIRECTINPUT8 g_dinput_ctx;
static void dinput_joypad_destroy(void)
{
unsigned i;
settings_t *settings = config_get_ptr();
for (i = 0; i < MAX_USERS; i++)
{
if (g_pads[i].joypad)
{
IDirectInputDevice8_Unacquire(g_pads[i].joypad);
IDirectInputDevice8_Release(g_pads[i].joypad);
}
free(g_pads[i].joy_name);
g_pads[i].joy_name = NULL;
free(g_pads[i].joy_friendly_name);
g_pads[i].joy_friendly_name = NULL;
*settings->input.device_names[i] = '\0';
}
g_joypad_cnt = 0;
memset(g_pads, 0, sizeof(g_pads));
/* Can be blocked by global Dinput context. */
dinput_destroy_context();
}
static BOOL CALLBACK enum_axes_cb(const DIDEVICEOBJECTINSTANCE *inst, void *p)
{
DIPROPRANGE range;
LPDIRECTINPUTDEVICE8 joypad = (LPDIRECTINPUTDEVICE8)p;
memset(&range, 0, sizeof(range));
range.diph.dwSize = sizeof(DIPROPRANGE);
range.diph.dwHeaderSize = sizeof(DIPROPHEADER);
range.diph.dwHow = DIPH_BYID;
range.diph.dwObj = inst->dwType;
range.lMin = -0x7fff;
range.lMax = 0x7fff;
IDirectInputDevice8_SetProperty(joypad, DIPROP_RANGE, &range.diph);
return DIENUM_CONTINUE;
}
/* Based on SDL2's implementation. */
static bool guid_is_xinput_device(const GUID* product_guid)
{
unsigned i, num_raw_devs = 0;
PRAWINPUTDEVICELIST raw_devs = NULL;
/* Check for well known XInput device GUIDs,
* thereby removing the need for the IG_ check.
* This lets us skip RAWINPUT for popular devices.
*
* Also, we need to do this for the Valve Streaming Gamepad
* because it's virtualized and doesn't show up in the device list. */
for (i = 0; i < ARRAY_SIZE(common_xinput_guids); ++i)
{
if (memcmp(product_guid, &common_xinput_guids[i], sizeof(GUID)) == 0)
return true;
}
/* Go through RAWINPUT (WinXP and later) to find HID devices. */
if (!raw_devs)
{
if ((GetRawInputDeviceList(NULL, &num_raw_devs,
sizeof(RAWINPUTDEVICELIST)) == (UINT)-1) || (!num_raw_devs))
return false;
raw_devs = (PRAWINPUTDEVICELIST)
malloc(sizeof(RAWINPUTDEVICELIST) * num_raw_devs);
if (!raw_devs)
return false;
if (GetRawInputDeviceList(raw_devs, &num_raw_devs,
sizeof(RAWINPUTDEVICELIST)) == (UINT)-1)
{
free(raw_devs);
raw_devs = NULL;
return false;
}
}
for (i = 0; i < num_raw_devs; i++)
{
RID_DEVICE_INFO rdi;
char devName[128] = {0};
UINT rdiSize = sizeof(rdi);
UINT nameSize = sizeof(devName);
rdi.cbSize = sizeof (rdi);
if ((raw_devs[i].dwType == RIM_TYPEHID) &&
(GetRawInputDeviceInfoA(raw_devs[i].hDevice, RIDI_DEVICEINFO, &rdi, &rdiSize) != ((UINT)-1)) &&
(MAKELONG(rdi.hid.dwVendorId, rdi.hid.dwProductId) == ((LONG)product_guid->Data1)) &&
(GetRawInputDeviceInfoA(raw_devs[i].hDevice, RIDI_DEVICENAME, devName, &nameSize) != ((UINT)-1)) &&
(strstr(devName, "IG_") != NULL) )
{
free(raw_devs);
raw_devs = NULL;
return true;
}
}
free(raw_devs);
raw_devs = NULL;
return false;
}
static const char *dinput_joypad_name(unsigned pad)
{
if (pad < MAX_USERS)
return g_pads[pad].joy_name;
return NULL;
}
static int32_t dinput_joypad_vid(unsigned pad)
{
return g_pads[pad].vid;
}
static int32_t dinput_joypad_pid(unsigned pad)
{
return g_pads[pad].pid;
}
static const char *dinput_joypad_friendly_name(unsigned pad)
{
if (pad < MAX_USERS)
return g_pads[pad].joy_friendly_name;
return NULL;
}
static BOOL CALLBACK enum_joypad_cb(const DIDEVICEINSTANCE *inst, void *p)
{
#ifdef HAVE_XINPUT
bool is_xinput_pad;
#endif
LPDIRECTINPUTDEVICE8 *pad = NULL;
driver_t *driver = driver_get_ptr();
settings_t *settings = config_get_ptr();
(void)p;
if (g_joypad_cnt == MAX_USERS)
return DIENUM_STOP;
pad = &g_pads[g_joypad_cnt].joypad;
#ifdef __cplusplus
if (FAILED(IDirectInput8_CreateDevice(
g_dinput_ctx, inst->guidInstance, pad, NULL)))
#else
if (FAILED(IDirectInput8_CreateDevice(
g_dinput_ctx, &inst->guidInstance, pad, NULL)))
#endif
return DIENUM_CONTINUE;
g_pads[g_joypad_cnt].joy_name = strdup(inst->tszProductName);
g_pads[g_joypad_cnt].joy_friendly_name = strdup(inst->tszInstanceName);
/* there may be more useful info in the GUID so leave this here for a while */
#if 0
printf("Guid = {%08lX-%04hX-%04hX-%02hhX%02hhX-%02hhX%02hhX%02hhX%02hhX%02hhX%02hhX}\n",
inst->guidProduct.Data1, inst->guidProduct.Data2, inst->guidProduct.Data3,
inst->guidProduct.Data4[0], inst->guidProduct.Data4[1], inst->guidProduct.Data4[2], inst->guidProduct.Data4[3],
inst->guidProduct.Data4[4], inst->guidProduct.Data4[5], inst->guidProduct.Data4[6], inst->guidProduct.Data4[7]);
#endif
g_pads[g_joypad_cnt].vid = inst->guidProduct.Data1 % 0x10000;
g_pads[g_joypad_cnt].pid = inst->guidProduct.Data1 / 0x10000;
RARCH_LOG("Device #%u PID: {%04lX} VID:{%04lX}\n", g_joypad_cnt, g_pads[g_joypad_cnt].pid, g_pads[g_joypad_cnt].vid);
#ifdef HAVE_XINPUT
is_xinput_pad = g_xinput_block_pads
&& guid_is_xinput_device(&inst->guidProduct);
if (is_xinput_pad)
{
if (g_last_xinput_pad_idx < 4)
g_xinput_pad_indexes[g_joypad_cnt] = g_last_xinput_pad_idx++;
goto enum_iteration_done;
}
#endif
IDirectInputDevice8_SetDataFormat(*pad, &c_dfDIJoystick2);
IDirectInputDevice8_SetCooperativeLevel(*pad, (HWND)driver->video_window,
DISCL_NONEXCLUSIVE | DISCL_BACKGROUND);
IDirectInputDevice8_EnumObjects(*pad, enum_axes_cb,
*pad, DIDFT_ABSAXIS);
#ifdef HAVE_XINPUT
if (!is_xinput_pad)
#endif
{
autoconfig_params_t params = {{0}};
strlcpy(settings->input.device_names[g_joypad_cnt],
dinput_joypad_name(g_joypad_cnt),
sizeof(settings->input.device_names[g_joypad_cnt]));
params.idx = g_joypad_cnt;
strlcpy(params.name, dinput_joypad_name(g_joypad_cnt), sizeof(params.name));
strlcpy(params.display_name, dinput_joypad_friendly_name(g_joypad_cnt), sizeof(params.driver));
strlcpy(params.driver, dinput_joypad.ident, sizeof(params.driver));
params.vid = dinput_joypad_vid(g_joypad_cnt);
params.pid = dinput_joypad_pid(g_joypad_cnt);
input_config_autoconfigure_joypad(&params);
settings->input.pid[g_joypad_cnt] = params.pid;
settings->input.vid[g_joypad_cnt] = params.vid;
}
#ifdef HAVE_XINPUT
enum_iteration_done:
#endif
g_joypad_cnt++;
return DIENUM_CONTINUE;
}
static bool dinput_joypad_init(void *data)
{
unsigned i;
(void)data;
if (!dinput_init_context())
return false;
g_last_xinput_pad_idx = 0;
for (i = 0; i < MAX_USERS; ++i)
{
g_xinput_pad_indexes[i] = -1;
g_pads[i].joy_name = NULL;
g_pads[i].joy_friendly_name = NULL;
}
RARCH_LOG("Enumerating DInput joypads ...\n");
IDirectInput8_EnumDevices(g_dinput_ctx, DI8DEVCLASS_GAMECTRL,
enum_joypad_cb, NULL, DIEDFL_ATTACHEDONLY);
RARCH_LOG("Done enumerating DInput joypads ...\n");
return true;
}
static bool dinput_joypad_button(unsigned port_num, uint16_t joykey)
{
const struct dinput_joypad *pad = NULL;
if (joykey == NO_BTN)
return false;
pad = &g_pads[port_num];
if (!pad->joypad)
return false;
/* Check hat. */
if (GET_HAT_DIR(joykey))
{
unsigned pov;
unsigned hat = GET_HAT(joykey);
unsigned elems = sizeof(pad->joy_state.rgdwPOV) /
sizeof(pad->joy_state.rgdwPOV[0]);
if (hat >= elems)
return false;
pov = pad->joy_state.rgdwPOV[hat];
/* Magic numbers I'm not sure where originate from. */
if (pov < 36000)
{
switch (GET_HAT_DIR(joykey))
{
case HAT_UP_MASK:
return (pov >= 31500) || (pov <= 4500);
case HAT_RIGHT_MASK:
return (pov >= 4500) && (pov <= 13500);
case HAT_DOWN_MASK:
return (pov >= 13500) && (pov <= 22500);
case HAT_LEFT_MASK:
return (pov >= 22500) && (pov <= 31500);
}
}
return false;
}
else
{
unsigned elems = sizeof(pad->joy_state.rgbButtons) /
sizeof(pad->joy_state.rgbButtons[0]);
if (joykey < elems)
return pad->joy_state.rgbButtons[joykey];
}
return false;
}
static int16_t dinput_joypad_axis(unsigned port_num, uint32_t joyaxis)
{
const struct dinput_joypad *pad = NULL;
int val = 0;
int axis = -1;
bool is_neg = false;
bool is_pos = false;
if (joyaxis == AXIS_NONE)
return 0;
pad = &g_pads[port_num];
if (!pad->joypad)
return 0;
if (AXIS_NEG_GET(joyaxis) <= 5)
{
axis = AXIS_NEG_GET(joyaxis);
is_neg = true;
}
else if (AXIS_POS_GET(joyaxis) <= 5)
{
axis = AXIS_POS_GET(joyaxis);
is_pos = true;
}
switch (axis)
{
case 0:
val = pad->joy_state.lX;
break;
case 1:
val = pad->joy_state.lY;
break;
case 2:
val = pad->joy_state.lZ;
break;
case 3:
val = pad->joy_state.lRx;
break;
case 4:
val = pad->joy_state.lRy;
break;
case 5:
val = pad->joy_state.lRz;
break;
}
if (is_neg && val > 0)
val = 0;
else if (is_pos && val < 0)
val = 0;
return val;
}
static void dinput_joypad_poll(void)
{
unsigned i;
for (i = 0; i < MAX_USERS; i++)
{
struct dinput_joypad *pad = &g_pads[i];
bool polled = g_xinput_pad_indexes[i] < 0;
if (!pad || !pad->joypad || !polled)
continue;
memset(&pad->joy_state, 0, sizeof(pad->joy_state));
if (FAILED(IDirectInputDevice8_Poll(pad->joypad)))
{
if (FAILED(IDirectInputDevice8_Acquire(pad->joypad)))
{
memset(&pad->joy_state, 0, sizeof(DIJOYSTATE2));
continue;
}
/* If this fails, something *really* bad must have happened. */
if (FAILED(IDirectInputDevice8_Poll(pad->joypad)))
{
memset(&pad->joy_state, 0, sizeof(DIJOYSTATE2));
continue;
}
}
IDirectInputDevice8_GetDeviceState(pad->joypad,
sizeof(DIJOYSTATE2), &pad->joy_state);
}
}
static bool dinput_joypad_query_pad(unsigned pad)
{
return pad < MAX_USERS && g_pads[pad].joypad;
}
input_device_driver_t dinput_joypad = {
dinput_joypad_init,
dinput_joypad_query_pad,
dinput_joypad_destroy,
dinput_joypad_button,
NULL,
dinput_joypad_axis,
dinput_joypad_poll,
NULL,
dinput_joypad_name,
"dinput",
};
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