1 /*****************************************************************************
2 ** $Source: /cygdrive/d/Private/_SVNROOT/bluemsx/blueMSX/Src/Input/SviJoyIo.c,v $
3 **
4 ** $Revision: 1.5 $
5 **
6 ** $Date: 2008-03-30 18:38:40 $
7 **
8 ** More info: http://www.bluemsx.com
9 **
10 ** Copyright (C) 2003-2006 Daniel Vik
11 **
12 ** This program is free software; you can redistribute it and/or modify
13 ** it under the terms of the GNU General Public License as published by
14 ** the Free Software Foundation; either version 2 of the License, or
15 ** (at your option) any later version.
16 **
17 ** This program is distributed in the hope that it will be useful,
18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ** GNU General Public License for more details.
21 **
22 ** You should have received a copy of the GNU General Public License
23 ** along with this program; if not, write to the Free Software
24 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 **
26 ******************************************************************************
27 */
28 #include "SviJoyIo.h"
29 #include "JoystickPort.h"
30 #include "InputEvent.h"
31 #include "DeviceManager.h"
32 #include "SaveState.h"
33 #include "MediaDb.h"
34
35 #include "SviJoystick.h"
36
37 #include <stdlib.h>
38
39 struct SviJoyIo {
40 SviJoystickDevice* joyDevice[2];
41 int joyDeviceHandle;
42 UInt8 lastReadValue;
43 int deviceHandle;
44 };
45
joyIoHandler(SviJoyIo * joyIo,int port,JoystickPortType type)46 static void joyIoHandler(SviJoyIo* joyIo, int port, JoystickPortType type)
47 {
48 if (port >= 2) {
49 return;
50 }
51
52 if (joyIo->joyDevice[port] != NULL && joyIo->joyDevice[port]->destroy != NULL) {
53 joyIo->joyDevice[port]->destroy(joyIo->joyDevice[port]);
54 }
55
56 switch (type) {
57 default:
58 case JOYSTICK_PORT_NONE:
59 joyIo->joyDevice[port] = NULL;
60 break;
61 case JOYSTICK_PORT_JOYSTICK:
62 joyIo->joyDevice[port] = sviJoystickCreate(port);
63 break;
64 }
65 }
66
loadState(SviJoyIo * joyIo)67 static void loadState(SviJoyIo* joyIo)
68 {
69 int i;
70 for (i = 0; i < 2; i++) {
71 if (joyIo->joyDevice[i] != NULL && joyIo->joyDevice[i]->loadState != NULL) {
72 joyIo->joyDevice[i]->loadState(joyIo->joyDevice[i]);
73 }
74 }
75 }
76
saveState(SviJoyIo * joyIo)77 static void saveState(SviJoyIo* joyIo)
78 {
79 int i;
80 for (i = 0; i < 2; i++) {
81 if (joyIo->joyDevice[i] != NULL && joyIo->joyDevice[i]->saveState != NULL) {
82 joyIo->joyDevice[i]->saveState(joyIo->joyDevice[i]);
83 }
84 }
85 }
86
reset(SviJoyIo * joyIo)87 static void reset(SviJoyIo* joyIo)
88 {
89 int i;
90 for (i = 0; i < 2; i++) {
91 if (joyIo->joyDevice[i] != NULL && joyIo->joyDevice[i]->reset != NULL) {
92 joyIo->joyDevice[i]->reset(joyIo->joyDevice[i]);
93 }
94 }
95 }
96
destroy(SviJoyIo * joyIo)97 static void destroy(SviJoyIo* joyIo)
98 {
99 int i;
100 for (i = 0; i < 2; i++) {
101 if (joyIo->joyDevice[i] != NULL && joyIo->joyDevice[i]->destroy != NULL) {
102 joyIo->joyDevice[i]->destroy(joyIo->joyDevice[i]);
103 }
104 }
105
106 joystickPortUpdateHandlerUnregister();
107
108 deviceManagerUnregister(joyIo->deviceHandle);
109 }
110
sviJoyIoRead(SviJoyIo * joyIo)111 UInt8 sviJoyIoRead(SviJoyIo* joyIo) {
112 UInt8 value = 0xff;
113 if (joyIo->joyDevice[0] != NULL && joyIo->joyDevice[0]->read != NULL) {
114 value = (value & 0xf0) | (joyIo->joyDevice[0]->read(joyIo->joyDevice[0]) << 0);
115 }
116 if (joyIo->joyDevice[1] != NULL && joyIo->joyDevice[1]->read != NULL) {
117 value = (value & 0x0f) | (joyIo->joyDevice[1]->read(joyIo->joyDevice[1]) << 4);
118 }
119 joyIo->lastReadValue = value;
120 return value;
121 }
122
sviJoyIoReadTrigger(SviJoyIo * joyIo)123 UInt8 sviJoyIoReadTrigger(SviJoyIo* joyIo) {
124 UInt8 value = 0x3f;
125 if (joyIo->joyDevice[0] != NULL && joyIo->joyDevice[0]->readTrigger != NULL) {
126 value &= ~(joyIo->joyDevice[0]->readTrigger(joyIo->joyDevice[0]) << 4);
127 }
128 if (joyIo->joyDevice[1] != NULL && joyIo->joyDevice[1]->readTrigger != NULL) {
129 value &= ~(joyIo->joyDevice[1]->readTrigger(joyIo->joyDevice[1]) << 5);
130 }
131 return value;
132 }
133
sviJoyIoCreate()134 SviJoyIo* sviJoyIoCreate()
135 {
136 DeviceCallbacks callbacks = { destroy, reset, saveState, loadState };
137 SviJoyIo* sviJoyIo = (SviJoyIo*)calloc(1, sizeof(SviJoyIo));
138
139 joystickPortUpdateHandlerRegister(joyIoHandler, sviJoyIo);
140
141 sviJoyIo->deviceHandle = deviceManagerRegister(ROM_UNKNOWN, &callbacks, sviJoyIo);
142
143 return sviJoyIo;
144 }
145
146