aboutsummaryrefslogtreecommitdiff
path: root/backends/platform/ps2/ps2pad.cpp
blob: 3d285eedd592d7b6df656740da911fc104045476 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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 Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *
 */

#include <kernel.h>
#include <malloc.h>
#include <assert.h>
#include "backends/platform/ps2/systemps2.h"
#include "backends/platform/ps2/ps2pad.h"

Ps2Pad::Ps2Pad(OSystem_PS2 *system) {
	_system = system;
	_padBuf = (uint8*)memalign(64, 256);
	_padStatus = STAT_NONE;

	padInit(0); // initialize library
	_port = _slot = 0;	// first controller, no multitap
	initPad();
}

void Ps2Pad::initPad(void) {
	int modes = 0;
	if (_padStatus == STAT_NONE) {
		if (padPortOpen(_port, _slot, _padBuf) == 1) {
			_padStatus = STAT_OPEN;
			_padInitTime = _system->getMillis();
		} else {
			padPortClose(_port, _slot);
			printf("Unable to open port (%d/%d)!\n", _port, _slot);
		}
	} else {
		if (checkPadReady(_port, _slot)) {
			switch (_padStatus) {
				case STAT_OPEN:
					_padStatus = STAT_DETECT;
					break;
				case STAT_DETECT:
					_isDualShock = false;
					modes = padInfoMode(_port, _slot, PAD_MODETABLE, -1);

					// Verify that the controller has a DUAL SHOCK mode
					for (int cnt = 0; cnt < modes; cnt++)
						if (padInfoMode(_port, _slot, PAD_MODETABLE, cnt) == PAD_TYPE_DUALSHOCK)
							_isDualShock = true;

					// If ExId != 0x0 => This controller has actuator engines
					// This check should always pass if the Dual Shock test above passed
					if (_isDualShock)
						if (padInfoMode(_port, _slot, PAD_MODECUREXID, 0) == 0)
							_isDualShock = false;

					if (_isDualShock) {
						// When using MMODE_LOCK, user cant change mode with Select button
						padSetMainMode(_port, _slot, PAD_MMODE_DUALSHOCK, PAD_MMODE_LOCK);
						_padStatus = STAT_INIT_DSHOCK;
					} else
						_padStatus = STAT_WAIT_READY;
					break;
				case STAT_INIT_DSHOCK:
					padEnterPressMode(_port, _slot);
					_padStatus = STAT_CHECK_ACT;
					break;
				case STAT_CHECK_ACT:
					_actuators = padInfoAct(_port, _slot, -1, 0);
					if (_actuators != 0)
						_padStatus = STAT_INIT_ACT;
					else {
						_isDualShock = false;
						_padStatus = STAT_WAIT_READY;
					}
					break;
				case STAT_INIT_ACT:
					char actAlign[6];
					actAlign[0] = 0;
					actAlign[1] = 1;
					actAlign[2] = actAlign[3] = actAlign[4] = actAlign[5] = 0xff;
					padSetActAlign(_port, _slot, actAlign);
					_padStatus = STAT_WAIT_READY;
					break;
				case STAT_WAIT_READY:
					_padStatus = STAT_OKAY;
					break;
				case STAT_OKAY:
					// pad is already initialized
					break;
			}
		} else {
			// check for timeout...
			if (_system->getMillis() - _padInitTime > 5000) {
				// still no pad, give up.
				if (padPortClose(_port, _slot) != 1)
					printf("WARNING: can't close port: %d/%d\n", _port, _slot);
				printf("looking for pad, gave up and closed port\n");
				_padStatus = STAT_NONE;
			}
		}
	}
}

bool Ps2Pad::checkPadReady(int port, int slot) {
	int state = padGetState(port, slot);
	return (state == PAD_STATE_STABLE) || (state == PAD_STATE_FINDCTP1);
}

bool Ps2Pad::padAlive(void) {
	if ((_padStatus == STAT_OKAY) && checkPadReady(_port, _slot))
		return true;
	initPad();
	return false;
}

bool Ps2Pad::isDualShock(void) {
	return _isDualShock;
}

void Ps2Pad::readPad(uint16 *pbuttons, int16 *joyh, int16 *joyv) {
	if (padAlive()) {
		struct padButtonStatus buttons;
		padRead(_port, _slot, &buttons);
		*pbuttons = ~buttons.btns;
		if (_isDualShock) {
			*joyh = (int16)buttons.ljoy_h - 128;
			*joyv = (int16)buttons.ljoy_v - 128;
		} else
			*joyh = *joyv = 0;
	} else {
		*joyh = *joyv = 0;
		*pbuttons = 0;
	}
}