/
SDL_haikujoystick.cc
278 lines (233 loc) · 8.55 KB
1
2
/*
Simple DirectMedia Layer
3
Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifdef SDL_JOYSTICK_HAIKU
/* This is the Haiku implementation of the SDL joystick API */
27
28
#include <support/String.h>
#include <device/Joystick.h>
29
30
31
32
33
34
35
36
37
38
extern "C"
{
#include "SDL_joystick.h"
#include "../SDL_sysjoystick.h"
#include "../SDL_joystick_c.h"
/* The maximum number of joysticks we'll detect */
39
#define MAX_JOYSTICKS 16
40
41
42
43
44
45
46
47
48
49
50
51
52
/* A list of available joysticks */
static char *SDL_joyport[MAX_JOYSTICKS];
static char *SDL_joyname[MAX_JOYSTICKS];
/* The private structure used to keep track of a joystick */
struct joystick_hwdata
{
BJoystick *stick;
uint8 *new_hats;
int16 *new_axes;
};
53
static int numjoysticks = 0;
54
55
56
57
58
/* Function to scan the system for joysticks.
* Joystick 0 should be the system default joystick.
* It should return 0, or -1 on an unrecoverable fatal error.
*/
59
static int HAIKU_JoystickInit(void)
60
61
62
63
64
65
66
67
{
BJoystick joystick;
int i;
int32 nports;
char name[B_OS_NAME_LENGTH];
/* Search for attached joysticks */
nports = joystick.CountDevices();
68
numjoysticks = 0;
69
70
SDL_memset(SDL_joyport, 0, (sizeof SDL_joyport));
SDL_memset(SDL_joyname, 0, (sizeof SDL_joyname));
71
for (i = 0; (numjoysticks < MAX_JOYSTICKS) && (i < nports); ++i)
72
73
74
75
76
{
if (joystick.GetDeviceName(i, name) == B_OK) {
if (joystick.Open(name) != B_ERROR) {
BString stick_name;
joystick.GetControllerName(&stick_name);
77
78
79
SDL_joyport[numjoysticks] = SDL_strdup(name);
SDL_joyname[numjoysticks] = SDL_strdup(stick_name.String());
numjoysticks++;
80
81
82
83
joystick.Close();
}
}
}
84
return (numjoysticks);
85
86
}
87
static int HAIKU_JoystickGetCount(void)
88
{
89
return numjoysticks;
90
91
}
92
static void HAIKU_JoystickDetect(void)
93
94
95
96
{
}
/* Function to get the device-dependent name of a joystick */
97
static const char *HAIKU_JoystickGetDeviceName(int device_index)
98
99
100
101
{
return SDL_joyname[device_index];
}
102
103
104
105
106
static int HAIKU_JoystickGetDevicePlayerIndex(int device_index)
{
return -1;
}
107
/* Function to perform the mapping from device index to the instance id for this index */
108
static SDL_JoystickID HAIKU_JoystickGetDeviceInstanceID(int device_index)
109
110
111
112
{
return device_index;
}
113
114
static void HAIKU_JoystickClose(SDL_Joystick * joystick);
115
116
117
118
119
/* Function to open a joystick for use.
The joystick to open is specified by the device index.
This should fill the nbuttons and naxes fields of the joystick structure.
It returns 0, or -1 if there is an error.
*/
120
static int HAIKU_JoystickOpen(SDL_Joystick * joystick, int device_index)
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
{
BJoystick *stick;
/* Create the joystick data structure */
joystick->instance_id = device_index;
joystick->hwdata = (struct joystick_hwdata *)
SDL_malloc(sizeof(*joystick->hwdata));
if (joystick->hwdata == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata));
stick = new BJoystick;
joystick->hwdata->stick = stick;
/* Open the requested joystick for use */
if (stick->Open(SDL_joyport[device_index]) == B_ERROR) {
137
HAIKU_JoystickClose(joystick);
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
return SDL_SetError("Unable to open joystick");
}
/* Set the joystick to calibrated mode */
stick->EnableCalibration();
/* Get the number of buttons, hats, and axes on the joystick */
joystick->nbuttons = stick->CountButtons();
joystick->naxes = stick->CountAxes();
joystick->nhats = stick->CountHats();
joystick->hwdata->new_axes = (int16 *)
SDL_malloc(joystick->naxes * sizeof(int16));
joystick->hwdata->new_hats = (uint8 *)
SDL_malloc(joystick->nhats * sizeof(uint8));
if (!joystick->hwdata->new_hats || !joystick->hwdata->new_axes) {
154
HAIKU_JoystickClose(joystick);
155
156
157
158
return SDL_OutOfMemory();
}
/* We're done! */
159
return 0;
160
161
162
163
164
165
166
}
/* Function to update the state of a joystick - called as a device poll.
* This function shouldn't update the joystick structure directly,
* but instead should call SDL_PrivateJoystick*() to deliver events
* and update joystick device state.
*/
167
static void HAIKU_JoystickUpdate(SDL_Joystick * joystick)
168
169
170
171
172
173
174
175
176
177
178
179
180
181
{
static const Uint8 hat_map[9] = {
SDL_HAT_CENTERED,
SDL_HAT_UP,
SDL_HAT_RIGHTUP,
SDL_HAT_RIGHT,
SDL_HAT_RIGHTDOWN,
SDL_HAT_DOWN,
SDL_HAT_LEFTDOWN,
SDL_HAT_LEFT,
SDL_HAT_LEFTUP
};
BJoystick *stick;
182
int i;
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
int16 *axes;
uint8 *hats;
uint32 buttons;
/* Set up data pointers */
stick = joystick->hwdata->stick;
axes = joystick->hwdata->new_axes;
hats = joystick->hwdata->new_hats;
/* Get the new joystick state */
stick->Update();
stick->GetAxisValues(axes);
stick->GetHatValues(hats);
buttons = stick->ButtonValues();
/* Generate axis motion events */
for (i = 0; i < joystick->naxes; ++i) {
200
SDL_PrivateJoystickAxis(joystick, i, axes[i]);
201
202
203
204
}
/* Generate hat change events */
for (i = 0; i < joystick->nhats; ++i) {
205
SDL_PrivateJoystickHat(joystick, i, hat_map[hats[i]]);
206
207
208
209
}
/* Generate button events */
for (i = 0; i < joystick->nbuttons; ++i) {
210
SDL_PrivateJoystickButton(joystick, i, (buttons & 0x01));
211
212
213
214
215
buttons >>= 1;
}
}
/* Function to close a joystick after use */
216
static void HAIKU_JoystickClose(SDL_Joystick * joystick)
217
218
219
220
221
222
223
224
225
226
227
{
if (joystick->hwdata) {
joystick->hwdata->stick->Close();
delete joystick->hwdata->stick;
SDL_free(joystick->hwdata->new_hats);
SDL_free(joystick->hwdata->new_axes);
SDL_free(joystick->hwdata);
}
}
/* Function to perform any system-specific joystick related cleanup */
228
static void HAIKU_JoystickQuit(void)
229
230
231
{
int i;
232
for (i = 0; i < numjoysticks; ++i) {
233
234
235
236
SDL_free(SDL_joyport[i]);
}
SDL_joyport[0] = NULL;
237
for (i = 0; i < numjoysticks; ++i) {
238
239
240
241
242
SDL_free(SDL_joyname[i]);
}
SDL_joyname[0] = NULL;
}
243
static SDL_JoystickGUID HAIKU_JoystickGetDeviceGUID( int device_index )
244
245
246
{
SDL_JoystickGUID guid;
/* the GUID is just the first 16 chars of the name for now */
247
const char *name = HAIKU_JoystickGetDeviceName( device_index );
248
249
250
251
252
SDL_zero( guid );
SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) );
return guid;
}
253
static int HAIKU_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
254
{
255
return SDL_Unsupported();
256
257
}
258
259
260
261
262
263
SDL_JoystickDriver SDL_HAIKU_JoystickDriver =
{
HAIKU_JoystickInit,
HAIKU_JoystickGetCount,
HAIKU_JoystickDetect,
HAIKU_JoystickGetDeviceName,
264
HAIKU_JoystickGetDevicePlayerIndex,
265
266
267
268
269
270
271
272
273
274
HAIKU_JoystickGetDeviceGUID,
HAIKU_JoystickGetDeviceInstanceID,
HAIKU_JoystickOpen,
HAIKU_JoystickRumble,
HAIKU_JoystickUpdate,
HAIKU_JoystickClose,
HAIKU_JoystickQuit,
};
} // extern "C"
275
276
277
278
#endif /* SDL_JOYSTICK_HAIKU */
/* vi: set ts=4 sw=4 expandtab: */