RetroArch/input/drivers_joypad/ps2_joypad.c
2019-07-23 15:47:13 +02:00

223 lines
6.8 KiB
C

/* 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 "../../config.def.h"
#include "../input_driver.h"
#include "libpad.h"
#define PS2_PAD_SLOT 0 /* Always zero if not using multitap */
#define PS2_ANALOG_STICKS 2
#define PS2_ANALOG_AXIS 2
static unsigned char padBuf[2][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 bool is_analog_enabled(struct padButtonStatus buttons)
{
bool enabled = false;
if (buttons.ljoy_h || buttons.ljoy_v || buttons.rjoy_h || buttons.rjoy_v)
enabled = true;
return enabled;
}
static const char *ps2_joypad_name(unsigned pad)
{
return "PS2 Controller";
}
static bool ps2_joypad_init(void *data)
{
unsigned ret = 0;
unsigned port = 0;
bool init = true;
printf("PortMax: %d\n", padGetPortMax());
printf("SlotMax: %d\n", padGetSlotMax(port));
for (port = 0; port < DEFAULT_MAX_PADS; port++)
{
input_autoconfigure_connect( ps2_joypad_name(port),
NULL,
ps2_joypad.ident,
port,
0,
0);
/* Port 0 -> Connector 1, Port 1 -> Connector 2 */
if((ret = padPortOpen(port, PS2_PAD_SLOT, padBuf[port])) == 0)
{
printf("padOpenPort failed: %d\n", ret);
init = false;
break;
}
}
return init;
}
static bool ps2_joypad_button(unsigned port_num, uint16_t joykey)
{
if (port_num >= DEFAULT_MAX_PADS)
return false;
return (pad_state[port_num] & (UINT64_C(1) << joykey));
}
static void ps2_joypad_get_buttons(unsigned port_num, input_bits_t *state)
{
BIT256_CLEAR_ALL_PTR(state);
}
static int16_t ps2_joypad_axis(unsigned port_num, uint32_t joyaxis)
{
int val = 0;
int axis = -1;
bool is_neg = false;
bool is_pos = false;
if (joyaxis == AXIS_NONE || port_num >= DEFAULT_MAX_PADS)
return 0;
if (AXIS_NEG_GET(joyaxis) < 4)
{
axis = AXIS_NEG_GET(joyaxis);
is_neg = true;
}
else if (AXIS_POS_GET(joyaxis) < 4)
{
axis = AXIS_POS_GET(joyaxis);
is_pos = true;
}
switch (axis)
{
case 0:
val = analog_state[port_num][0][0];
break;
case 1:
val = analog_state[port_num][0][1];
break;
case 2:
val = analog_state[port_num][1][0];
break;
case 3:
val = analog_state[port_num][1][1];
break;
}
if (is_neg && val > 0)
val = 0;
else if (is_pos && val < 0)
val = 0;
return val;
}
static void ps2_joypad_poll(void)
{
unsigned player;
struct padButtonStatus buttons;
for (player = 0; player < DEFAULT_MAX_PADS; player++)
{
int state = padGetState(player, PS2_PAD_SLOT);
if (state == PAD_STATE_STABLE)
{
int ret = padRead(player, PS2_PAD_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 (is_analog_enabled(buttons))
{
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;
for (port = 0; port < DEFAULT_MAX_PADS; port++)
padPortClose(port, PS2_PAD_SLOT);
}
input_device_driver_t ps2_joypad = {
ps2_joypad_init,
ps2_joypad_query_pad,
ps2_joypad_destroy,
ps2_joypad_button,
ps2_joypad_get_buttons,
ps2_joypad_axis,
ps2_joypad_poll,
ps2_joypad_rumble,
ps2_joypad_name,
"ps2",
};