mirror of
https://github.com/libretro/RetroArch
synced 2025-01-30 12:32:52 +00:00
224 lines
7.1 KiB
C
224 lines
7.1 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2011-2018 - Francisco Javier Trujillo Mata - fjtrujy
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include <boolean.h>
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#include "../input_driver.h"
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#include "libpad.h"
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#define PS2_MAX_PADS 2
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#define PS2_PAD_SLOT 0 /* Always zero if not using multitap */
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#define PS2_ANALOG_STICKS 2
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#define PS2_ANALOG_AXIS 2
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static unsigned char padBuf[2][256] ALIGNED(64);
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static uint64_t pad_state[PS2_MAX_PADS];
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static int16_t analog_state[PS2_MAX_PADS][PS2_ANALOG_STICKS][PS2_ANALOG_AXIS];
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extern uint64_t lifecycle_state;
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static INLINE int16_t convert_u8_to_s16(uint8_t val)
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{
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if (val == 0)
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return -0x7fff;
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return val * 0x0101 - 0x8000;
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}
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static bool is_analog_enabled(struct padButtonStatus buttons)
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{
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bool enabled = false;
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if (buttons.ljoy_h || buttons.ljoy_v || buttons.rjoy_h || buttons.rjoy_v) {
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enabled = true;
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}
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return enabled;
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}
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static const char *ps2_joypad_name(unsigned pad)
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{
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return "PS2 Controller";
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}
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static bool ps2_joypad_init(void *data)
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{
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unsigned ret = 0;
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unsigned port = 0;
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bool init = true;
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printf("PortMax: %d\n", padGetPortMax());
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printf("SlotMax: %d\n", padGetSlotMax(port));
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for (port = 0; port < PS2_MAX_PADS; port++)
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{
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bool auto_configure = input_autoconfigure_connect( ps2_joypad_name(port),
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NULL,
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ps2_joypad.ident,
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port,
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0,
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0);
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if (!auto_configure) {
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input_config_set_device_name(port, ps2_joypad_name(port));
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}
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/* Port 0 -> Connector 1, Port 1 -> Connector 2 */
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if((ret = padPortOpen(port, PS2_PAD_SLOT, padBuf[port])) == 0) {
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printf("padOpenPort failed: %d\n", ret);
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init = false;
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break;
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}
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}
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return init;
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}
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static bool ps2_joypad_button(unsigned port_num, uint16_t joykey)
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{
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if (port_num >= PS2_MAX_PADS)
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return false;
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return (pad_state[port_num] & (UINT64_C(1) << joykey));
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}
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static void ps2_joypad_get_buttons(unsigned port_num, input_bits_t *state)
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{
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BIT256_CLEAR_ALL_PTR(state);
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}
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static int16_t ps2_joypad_axis(unsigned port_num, uint32_t joyaxis)
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{
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int val = 0;
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int axis = -1;
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bool is_neg = false;
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bool is_pos = false;
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if (joyaxis == AXIS_NONE || port_num >= PS2_MAX_PADS)
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return 0;
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if (AXIS_NEG_GET(joyaxis) < 4)
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{
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axis = AXIS_NEG_GET(joyaxis);
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is_neg = true;
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}
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else if (AXIS_POS_GET(joyaxis) < 4)
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{
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axis = AXIS_POS_GET(joyaxis);
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is_pos = true;
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}
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switch (axis)
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{
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case 0:
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val = analog_state[port_num][0][0];
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break;
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case 1:
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val = analog_state[port_num][0][1];
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break;
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case 2:
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val = analog_state[port_num][1][0];
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break;
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case 3:
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val = analog_state[port_num][1][1];
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break;
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}
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if (is_neg && val > 0)
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val = 0;
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else if (is_pos && val < 0)
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val = 0;
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return val;
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}
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static void ps2_joypad_poll(void)
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{
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unsigned player;
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struct padButtonStatus buttons;
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for (player = 0; player < PS2_MAX_PADS; player++) {
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int state = padGetState(player, PS2_PAD_SLOT);
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if (state == PAD_STATE_STABLE) {
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int ret = padRead(player, PS2_PAD_SLOT, &buttons); /* port, slot, buttons */
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if (ret != 0) {
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int32_t state_tmp = 0xffff ^ buttons.btns;
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pad_state[player] = 0;
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pad_state[player] |= (state_tmp & PAD_LEFT) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_LEFT) : 0;
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pad_state[player] |= (state_tmp & PAD_DOWN) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_DOWN) : 0;
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pad_state[player] |= (state_tmp & PAD_RIGHT) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_RIGHT) : 0;
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pad_state[player] |= (state_tmp & PAD_UP) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_UP) : 0;
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pad_state[player] |= (state_tmp & PAD_START) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_START) : 0;
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pad_state[player] |= (state_tmp & PAD_SELECT) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_SELECT) : 0;
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pad_state[player] |= (state_tmp & PAD_TRIANGLE) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_X) : 0;
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pad_state[player] |= (state_tmp & PAD_SQUARE) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_Y) : 0;
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pad_state[player] |= (state_tmp & PAD_CROSS) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_B) : 0;
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pad_state[player] |= (state_tmp & PAD_CIRCLE) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_A) : 0;
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pad_state[player] |= (state_tmp & PAD_R1) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_R) : 0;
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pad_state[player] |= (state_tmp & PAD_L1) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_L) : 0;
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pad_state[player] |= (state_tmp & PAD_R2) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_R2) : 0;
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pad_state[player] |= (state_tmp & PAD_L2) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_L2) : 0;
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pad_state[player] |= (state_tmp & PAD_R3) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_R3) : 0;
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pad_state[player] |= (state_tmp & PAD_L3) ? (UINT64_C(1) << RETRO_DEVICE_ID_JOYPAD_L3) : 0;
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/* Analog */
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if (is_analog_enabled(buttons)) {
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analog_state[player][RETRO_DEVICE_INDEX_ANALOG_LEFT] [RETRO_DEVICE_ID_ANALOG_X] = convert_u8_to_s16(buttons.ljoy_h);
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analog_state[player][RETRO_DEVICE_INDEX_ANALOG_LEFT] [RETRO_DEVICE_ID_ANALOG_Y] = convert_u8_to_s16(buttons.ljoy_v);;
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analog_state[player][RETRO_DEVICE_INDEX_ANALOG_RIGHT][RETRO_DEVICE_ID_ANALOG_X] = convert_u8_to_s16(buttons.rjoy_h);;
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analog_state[player][RETRO_DEVICE_INDEX_ANALOG_RIGHT][RETRO_DEVICE_ID_ANALOG_Y] = convert_u8_to_s16(buttons.rjoy_v);;
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}
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}
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}
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}
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}
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static bool ps2_joypad_query_pad(unsigned pad)
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{
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return pad < PS2_MAX_PADS && pad_state[pad];
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}
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static bool ps2_joypad_rumble(unsigned pad,
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enum retro_rumble_effect effect, uint16_t strength)
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{
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return false;
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}
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static void ps2_joypad_destroy(void)
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{
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unsigned port;
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for (port = 0; port < PS2_MAX_PADS; port++) {
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padPortClose(port, PS2_PAD_SLOT);
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}
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}
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input_device_driver_t ps2_joypad = {
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ps2_joypad_init,
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ps2_joypad_query_pad,
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ps2_joypad_destroy,
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ps2_joypad_button,
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ps2_joypad_get_buttons,
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ps2_joypad_axis,
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ps2_joypad_poll,
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ps2_joypad_rumble,
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ps2_joypad_name,
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"ps2",
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};
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