pandory500/SDL-mirror
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This properly scales axes, and adds support for sliders/wheels

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40308
This commit is contained in:
Sam Lantinga 2002-03-10 03:49:25 +00:00
parent fab7d1c35c
commit d45cd06f89
1 changed files with 58 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

90
src/joystick/bsd/SDL_sysjoystick.c
View file

@ -52,11 +52,6 @@ static char rcsid =
#define MAX_JOY_JOYS 2
#define MAX_JOYS (MAX_UHID_JOYS + MAX_JOY_JOYS)
#define SDLAXIS_UINT8(v) \
((v == 127) ? 0 : \
(v == 255) ? 32767 : \
-32767)
struct report {
struct usb_ctl_report *buf; /* Buffer */
size_t size; /* Buffer size */
@ -77,9 +72,20 @@ static struct {
{ UHID_OUTPUT_REPORT, hid_output, "output" },
{ UHID_FEATURE_REPORT, hid_feature, "feature" }
};
#define REPORT_INPUT 0
#define REPORT_OUTPUT 1
#define REPORT_FEATURE 2
enum {
REPORT_INPUT = 0,
REPORT_OUTPUT = 1,
REPORT_FEATURE = 2
};
enum {
JOYAXE_X,
JOYAXE_Y,
JOYAXE_Z,
JOYAXE_SLIDER,
JOYAXE_WHEEL
};
struct joystick_hwdata {
int fd;
@ -90,8 +96,10 @@ struct joystick_hwdata {
} type;
struct report_desc *repdesc;
struct report inreport;
int axismin[3];
int axismax[3];
#if 0
int axismin[];
int axismax[];
#endif
};
static char *joynames[MAX_JOYS];
@ -181,7 +189,8 @@ SDL_SYS_JoystickOpen(SDL_Joystick *joy)
goto usberr;
}
if (rep->size <= 0) {
SDL_SetError("Input report descriptor has invalid length");
SDL_SetError("%s: Input report descriptor has invalid length",
hw->path);
goto usberr;
}
@ -222,10 +231,14 @@ SDL_SYS_JoystickOpen(SDL_Joystick *joy)
case HUG_X:
case HUG_Y:
case HUG_Z:
case HUG_SLIDER:
case HUG_WHEEL:
#if 0
hw->axismin[joy->naxes] =
hitem.logical_minimum;
hw->axismax[joy->naxes] =
hitem.logical_maximum;
#endif
joy->naxes++;
break;
}
@ -257,8 +270,9 @@ SDL_SYS_JoystickUpdate(SDL_Joystick *joy)
{
static struct hid_item hitem;
static struct hid_data *hdata;
static int nbutton, naxe, v, max, min;
static struct report *rep;
int nbutton, naxe;
Sint32 v;
rep = &joy->hwdata->inreport;
if (read(joy->hwdata->fd, rep->buf->data, rep->size) != rep->size) {
@ -271,7 +285,7 @@ SDL_SYS_JoystickUpdate(SDL_Joystick *joy)
return;
}
for (nbutton = 0, naxe = 0; hid_get_item(hdata, &hitem) > 0;) {
for (nbutton = 0; hid_get_item(hdata, &hitem) > 0;) {
switch (hitem.kind) {
case hid_input:
switch (HID_PAGE(hitem.usage)) {
@ -280,31 +294,43 @@ SDL_SYS_JoystickUpdate(SDL_Joystick *joy)
case HUP_GENERIC_DESKTOP:
switch (HID_USAGE(hitem.usage)) {
case HUG_X:
naxe = JOYAXE_X;
goto scaleaxe;
case HUG_Y:
naxe = JOYAXE_Y;
goto scaleaxe;
case HUG_Z:
v = hid_get_data(rep->buf->data,
&hitem);
/*
* XXX revisit later. need to test
* with more devices.
*/
if (joy->hwdata->axismin[naxe] == 0 &&
joy->hwdata->axismax[naxe] == 255) {
v = SDLAXIS_UINT8(v);
naxe = JOYAXE_Z;
goto scaleaxe;
case HUG_SLIDER:
naxe = JOYAXE_SLIDER;
goto scaleaxe;
case HUG_WHEEL:
naxe = JOYAXE_WHEEL;
goto scaleaxe;
}
scaleaxe:
v = (Sint32)hid_get_data(rep->buf->data, &hitem);
if (v != 127) {
if (v < 127) {
v = -(256 - v);
v <<= 7;
v++;
} else {
v++;
v <<= 7;
v--;
}
if (v != joy->axes[naxe]) {
SDL_PrivateJoystickAxis(joy,
naxe, (Sint32)v);
}
naxe++;
break;
} else {
v = 0;
}
if (v != joy->axes[naxe]) {
SDL_PrivateJoystickAxis(joy, naxe, v);
}
break;
case HUP_BUTTON:
/* XXX assume a 0..1 range */
v = hid_get_data(rep->buf->data, &hitem);
v = (Sint32)hid_get_data(rep->buf->data,
&hitem);
if (joy->buttons[nbutton] != v) {
SDL_PrivateJoystickButton(joy,
nbutton, v);