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RetroArch/input/drivers_joypad/ps2_joypad.c
libretroadmin 7ebab640d7 Cleanups/style nits
2023-02-23 13:15:14 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2011-2018 - Francisco Javier Trujillo Mata - fjtrujy
*
* 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 <stdint.h>
#include <stddef.h>
#include <boolean.h>
#include <kernel.h>
#include "../../config.def.h"
#include "../../tasks/tasks_internal.h"
#include "../input_driver.h"
#include "libmtap.h"
#include "libpad.h"
#define PS2_MAX_PORT 2 /* each ps2 has 2 ports */
#define PS2_MAX_SLOT 4 /* maximum - 4 slots in one multitap */
#define PS2_ANALOG_STICKS 2
#define PS2_ANALOG_AXIS 2
/* TODO/FIXME - static globals */
static unsigned char padBuf[PS2_MAX_PORT][PS2_MAX_SLOT][256] ALIGNED(64);
static uint64_t pad_state[DEFAULT_MAX_PADS];
static int16_t analog_state[DEFAULT_MAX_PADS][PS2_ANALOG_STICKS][PS2_ANALOG_AXIS];
static INLINE int16_t convert_u8_to_s16(uint8_t val)
{
if (val == 0)
return -0x7fff;
return val * 0x0101 - 0x8000;
}
static const char *ps2_joypad_name(unsigned pad)
{
return "PS2 Controller";
}
static void *ps2_joypad_init(void *data)
{
unsigned ret = 0;
unsigned port = 0;
unsigned slot = 0;
unsigned pad = 0;
for (port = 0; port < PS2_MAX_PORT; port++)
mtapPortOpen(port);
/* it can fail - we dont care, we will check it more strictly when padPortOpen */
for (slot = 0; slot < PS2_MAX_SLOT; slot++)
{
for (port = 0; port < PS2_MAX_PORT; port++)
{
input_autoconfigure_connect( ps2_joypad_name(pad), /* name */
NULL, /* display name */
ps2_joypad.ident, /* driver */
pad, /* idx */
0, /* vid */
0); /* pid */
pad++;
/* 2 main controller ports acts the same with and without multitap
Port 0,0 -> Connector 1 - the same as Port 0
Port 1,0 -> Connector 2 - the same as Port 1
Port 0,1 -> Connector 3
Port 1,1 -> Connector 4
Port 0,2 -> Connector 5
Port 1,2 -> Connector 6
Port 0,3 -> Connector 7
Port 1,3 -> Connector 8
*/
if ((ret = padPortOpen(port, slot, padBuf[port][slot])) == 0)
return NULL;
}
}
return (void*)-1;
}
static int32_t ps2_joypad_button(unsigned port, uint16_t joykey)
{
if (port >= DEFAULT_MAX_PADS)
return 0;
return pad_state[port] & (UINT64_C(1) << joykey);
}
static int16_t ps2_joypad_axis_state(unsigned port_num, uint32_t joyaxis)
{
if (AXIS_NEG_GET(joyaxis) < 4)
{
int16_t val = 0;
int16_t axis = AXIS_NEG_GET(joyaxis);
switch (axis)
{
case 0:
case 1:
val = analog_state[port_num][0][axis];
break;
case 2:
case 3:
val = analog_state[port_num][1][axis - 2];
break;
}
if (val < 0)
return val;
}
else if (AXIS_POS_GET(joyaxis) < 4)
{
int16_t val = 0;
int16_t axis = AXIS_POS_GET(joyaxis);
switch (axis)
{
case 0:
case 1:
val = analog_state[port_num][0][axis];
break;
case 2:
case 3:
val = analog_state[port_num][1][axis - 2];
break;
}
if (val > 0)
return val;
}
return 0;
}
static int16_t ps2_joypad_state(
rarch_joypad_info_t *joypad_info,
const struct retro_keybind *binds,
unsigned port)
{
unsigned i;
int16_t ret = 0;
uint16_t port_idx = joypad_info->joy_idx;
if (port_idx < DEFAULT_MAX_PADS)
{
for (i = 0; i < RARCH_FIRST_CUSTOM_BIND; i++)
{
/* Auto-binds are per joypad, not per user. */
const uint64_t joykey = (binds[i].joykey != NO_BTN)
? binds[i].joykey : joypad_info->auto_binds[i].joykey;
const uint32_t joyaxis = (binds[i].joyaxis != AXIS_NONE)
? binds[i].joyaxis : joypad_info->auto_binds[i].joyaxis;
if (
(uint16_t)joykey != NO_BTN
&& pad_state[port_idx] & (UINT64_C(1) << joykey)
)
ret |= ( 1 << i);
else if (joyaxis != AXIS_NONE &&
((float)abs(ps2_joypad_axis_state(port_idx, joyaxis))
/ 0x8000) > joypad_info->axis_threshold)
ret |= (1 << i);
}
}
return ret;
}
static int16_t ps2_joypad_axis(unsigned port_num, uint32_t joyaxis)
{
if (port_num >= DEFAULT_MAX_PADS)
return 0;
return ps2_joypad_axis_state(port_num, joyaxis);
}
static void ps2_joypad_get_buttons(unsigned port_num, input_bits_t *state)
{
BIT256_CLEAR_ALL_PTR(state);
}
static void ps2_joypad_poll(void)
{
unsigned player;
struct padButtonStatus buttons;
for (player = 0; player < DEFAULT_MAX_PADS; player++)
{
int ps2_slot = player >> 1;
int ps2_port = player & 0x1;
int state = padGetState(ps2_port, ps2_slot);
if (state != PAD_STATE_DISCONN || state != PAD_STATE_EXECCMD || state != PAD_STATE_ERROR)
{
int ret = padRead(ps2_port, ps2_slot, &buttons); /* port, slot, buttons */
if (ret != 0)
{
int32_t state_tmp = 0xffff ^ buttons.btns;
pad_state[player] = 0;
pad_state[player] |= (state_tmp & PAD_LEFT) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_LEFT) : 0;
pad_state[player] |= (state_tmp & PAD_DOWN) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_DOWN) : 0;
pad_state[player] |= (state_tmp & PAD_RIGHT) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_RIGHT) : 0;
pad_state[player] |= (state_tmp & PAD_UP) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_UP) : 0;
pad_state[player] |= (state_tmp & PAD_START) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_START) : 0;
pad_state[player] |= (state_tmp & PAD_SELECT) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_SELECT) : 0;
pad_state[player] |= (state_tmp & PAD_TRIANGLE) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_X) : 0;
pad_state[player] |= (state_tmp & PAD_SQUARE) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_Y) : 0;
pad_state[player] |= (state_tmp & PAD_CROSS) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_B) : 0;
pad_state[player] |= (state_tmp & PAD_CIRCLE) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_A) : 0;
pad_state[player] |= (state_tmp & PAD_R1) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_R) : 0;
pad_state[player] |= (state_tmp & PAD_L1) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_L) : 0;
pad_state[player] |= (state_tmp & PAD_R2) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_R2) : 0;
pad_state[player] |= (state_tmp & PAD_L2) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_L2) : 0;
pad_state[player] |= (state_tmp & PAD_R3) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_R3) : 0;
pad_state[player] |= (state_tmp & PAD_L3) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_L3) : 0;
/* Analog */
if (buttons.ljoy_h || buttons.ljoy_v || buttons.rjoy_h || buttons.rjoy_v)
{
analog_state[player][RETRO_DEVICE_INDEX_ANALOG_LEFT] [RETRO_DEVICE_ID_ANALOG_X] = convert_u8_to_s16(buttons.ljoy_h);
analog_state[player][RETRO_DEVICE_INDEX_ANALOG_LEFT] [RETRO_DEVICE_ID_ANALOG_Y] = convert_u8_to_s16(buttons.ljoy_v);;
analog_state[player][RETRO_DEVICE_INDEX_ANALOG_RIGHT][RETRO_DEVICE_ID_ANALOG_X] = convert_u8_to_s16(buttons.rjoy_h);;
analog_state[player][RETRO_DEVICE_INDEX_ANALOG_RIGHT][RETRO_DEVICE_ID_ANALOG_Y] = convert_u8_to_s16(buttons.rjoy_v);;
}
}
}
}
}
static bool ps2_joypad_query_pad(unsigned pad)
{
return pad < DEFAULT_MAX_PADS && pad_state[pad];
}
static bool ps2_joypad_rumble(unsigned pad,
enum retro_rumble_effect effect, uint16_t strength)
{
return false;
}
static void ps2_joypad_destroy(void)
{
unsigned port;
unsigned slot;
for (port = 0; port < PS2_MAX_PORT; port++)
{
for (slot = 0; slot < PS2_MAX_SLOT; slot++)
padPortClose(port, slot);
mtapPortClose(port);
}
}
input_device_driver_t ps2_joypad = {
ps2_joypad_init,
ps2_joypad_query_pad,
ps2_joypad_destroy,
ps2_joypad_button,
ps2_joypad_state,
ps2_joypad_get_buttons,
ps2_joypad_axis,
ps2_joypad_poll,
ps2_joypad_rumble,
NULL,
ps2_joypad_name,
"ps2",
};
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