Genesis-Plus-GX/gx/utils/wrap_wiiuse.c

190 lines
6.5 KiB
C

/****************************************************************************
* wrap_wiiuse.c
*
* libwiiuse wrapper for 3rd-party Classic Controller & Wii U Pro Controller support
*
* Copyright (C) 2015 Eke-Eke, based on technical info & code from Tueidj
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* 3. The name of the author may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************************/
#ifdef HW_RVL
#include <string.h>
#include <wiiuse/wiiuse.h>
#define WM_EXP_MEM_BASE 0x04A40000
#define WM_CTRL_STATUS_BYTE1_ATTACHMENT 0x02
#define WIIMOTE_STATE_WIIU_PRO_FOUND 0x00002
#define WIIMOTE_STATE_HANDSHAKE 0x00004
#define WIIMOTE_STATE_HANDSHAKE_COMPLETE 0x00008
extern void __real_wiiuse_handshake(struct wiimote_t *wm,ubyte *data,uword len);
extern void __real_wiiuse_set_ir(struct wiimote_t *wm,int status);
extern int __real_classic_ctrl_handshake(struct wiimote_t* wm, struct classic_ctrl_t* cc, ubyte* data, uword len);
static ubyte id[2];
void __wrap_wiiuse_handshake(struct wiimote_t *wm,ubyte *data,uword len)
{
if (!wm->handshake_state)
{
if (len==0)
{
/* 1st step : read wiimote status (this will also starts expansion handshake if one is connected) */
wiiuse_set_leds(wm,WIIMOTE_LED_NONE,NULL);
wiiuse_status(wm,__wrap_wiiuse_handshake);
return;
}
if (len > 2)
{
/* 2nd step: read expansion controller ID (if connected) */
if (data[2]&WM_CTRL_STATUS_BYTE1_ATTACHMENT)
{
wiiuse_read_data(wm,id,WM_EXP_MEM_BASE+0xFE,2,__wrap_wiiuse_handshake);
return;
}
}
else
{
/* 3rd step: finish handshake without trying to read internal memory if Wii U pro controller is detected */
if ((data[0]==0x01) && (data[1]==0x20))
{
int *state = (int *)&wm->state;
WIIUSE_EVENT_TYPE *event = (WIIUSE_EVENT_TYPE *)&wm->event;
*state &= ~WIIMOTE_STATE_HANDSHAKE;
*state |= (WIIMOTE_STATE_HANDSHAKE_COMPLETE | WIIMOTE_STATE_WIIU_PRO_FOUND);
*event = WIIUSE_CONNECT;
wiiuse_status(wm,NULL);
return;
}
}
}
/* proceed with default handshake sequence */
__real_wiiuse_handshake(wm,data,len);
}
void __wrap_wiiuse_set_ir(struct wiimote_t *wm,int status)
{
/* do not enable IR on Wii U Pro Controller */
if (wm->state & WIIMOTE_STATE_WIIU_PRO_FOUND)
{
/* this will force data report modes 0x34 or 0x35 */
wiiuse_status(wm,NULL);
return;
}
__real_wiiuse_set_ir(wm,status);
}
int __wrap_classic_ctrl_handshake(struct wiimote_t* wm, struct classic_ctrl_t* cc, ubyte* data, uword len)
{
/* detect Wii U Pro Controller */
if ((len > 223) && (data[222] == 0x01) && (data[223] == 0x20))
{
/* set default calibration values */
cc->btns = 0;
cc->btns_held = 0;
cc->btns_released = 0;
cc->ljs.max.x = cc->ljs.max.y = cc->rjs.max.x = cc->rjs.max.y = 255;
cc->ljs.min.x = cc->ljs.min.y = cc->rjs.min.x = cc->rjs.min.y = 0;
cc->ljs.center.x = cc->ljs.center.y = cc->rjs.center.x = cc->rjs.center.y = 128;
/* finish expansion handshake */
int *type = (int *)&wm->exp.type;
*type = EXP_CLASSIC;
return 1;
}
/* sometimes the first 16 bytes are invalid but the next 16 bytes are ok (?) */
if (data[0] == 0xFF)
{
if (data[16] != 0xFF)
data += 16;
}
/* some 3rd-party classic controllers return invalid factory calibration data */
if ((data[0] <= data[2]) || (data[1] >= data[2]) || (data[3] <= data[5]) || (data[4] >= data[5]) ||
(data[6] <= data[8]) || (data[7] >= data[8]) || (data[9] <= data[11]) || (data[10] >= data[11]))
{
/* this will reset to default values */
memset(data, 0, 16);
}
return __real_classic_ctrl_handshake(wm, cc, data, len);
}
void __wrap_classic_ctrl_event(struct classic_ctrl_t* cc, ubyte* msg)
{
/* save previously pressed buttons */
cc->btns_last = cc->btns;
/* detect Wii U pro controller */
if (cc->rjs.max.x == 0xFF)
{
/* pressed buttons (0 is active, 1 is inactive) */
cc->btns = ~((msg[8] << 8) | msg[9]) & CLASSIC_CTRL_BUTTON_ALL;
/* convert 12-bit little endian analog joysticks position to 8-bit values */
cc->ljs.pos.x = (msg[0] >> 4) | (msg[1] << 4);
cc->rjs.pos.x = (msg[2] >> 4) | (msg[3] << 4);
cc->ljs.pos.y = (msg[4] >> 4) | (msg[5] << 4);
cc->rjs.pos.y = (msg[6] >> 4) | (msg[7] << 4);
/* left/right triggers (not analog) */
cc->ls_raw = cc->btns & CLASSIC_CTRL_BUTTON_FULL_L ? 0x1F : 0;
cc->rs_raw = cc->btns & CLASSIC_CTRL_BUTTON_FULL_R ? 0x1F : 0;
}
else
{
/* pressed buttons (0 is active, 1 is inactive) */
cc->btns = ~((msg[4] << 8) | msg[5]) & CLASSIC_CTRL_BUTTON_ALL;
/* analog joysticks position */
cc->ljs.pos.x = (msg[0] & 0x3F);
cc->ljs.pos.y = (msg[1] & 0x3F);
cc->rjs.pos.x = ((msg[0] & 0xC0) >> 3) | ((msg[1] & 0xC0) >> 5) | ((msg[2] & 0x80) >> 7);
cc->rjs.pos.y = (msg[2] & 0x1F);
/* left/right triggers (analog) */
cc->ls_raw = (((msg[2] & 0x60) >> 2) | ((msg[3] & 0xE0) >> 5));
cc->rs_raw = (msg[3] & 0x1F);
}
/* held buttons */
cc->btns_held = (cc->btns & cc->btns_last);
/* released buttons */
cc->btns_released = (~cc->btns & cc->btns_last);
}
#endif