event.c

uboot在arm处理器s3c2410的移植代码

		axis[3] = js.y;
	    mask |= EVT_JOY_AXIS_X2|EVT_JOY_AXIS_Y2;
	    }
	}
    else {
	if (axis0) {
	    if (jmask & EVT_JOY_AXIS_X1)
		axis[0] = axis0[0];
	    if (jmask & EVT_JOY_AXIS_Y1)
		axis[1] = axis0[1];
	    mask |= EVT_JOY_AXIS_X1 | EVT_JOY_AXIS_Y1;
	    }
	if (axis1) {
	    if (jmask & EVT_JOY_AXIS_X2)
		axis[2] = axis1[0];
	    if (jmask & EVT_JOY_AXIS_Y2)
		axis[3] = axis1[1];
	    mask |= EVT_JOY_AXIS_X2 | EVT_JOY_AXIS_Y2;
	    }
	}
    return mask;
}

/****************************************************************************
REMARKS:
Read the joystick button data
****************************************************************************/
int EVTAPI _EVT_readJoyButtons(void)
{
    int buts = 0;

    if ((js_version & ~0xffff) == 0) {
	/* Old 0.x driver */
	struct JS_DATA_TYPE js;
	if (joystick0_fd && read(joystick0_fd, &js, JS_RETURN) == JS_RETURN)
	    buts = js.buttons;
	if (joystick1_fd && read(joystick1_fd, &js, JS_RETURN) == JS_RETURN)
	    buts |= js.buttons << 2;
	}
    else {
	if (buts0)
	    buts |= EVT_JOY1_BUTTONA*buts0[0] + EVT_JOY1_BUTTONB*buts0[1];
	if (buts1)
	    buts |= EVT_JOY2_BUTTONA*buts1[0] + EVT_JOY2_BUTTONB*buts1[1];
	}
    return buts;
}

/****************************************************************************
DESCRIPTION:
Returns the mask indicating what joystick axes are attached.

HEADER:
event.h

REMARKS:
This function is used to detect the attached joysticks, and determine
what axes are present and functioning. This function will re-detect any
attached joysticks when it is called, so if the user forgot to attach
the joystick when the application started, you can call this function to
re-detect any newly attached joysticks.

SEE ALSO:
EVT_joySetLowerRight, EVT_joySetCenter, EVT_joyIsPresent
****************************************************************************/
int EVTAPI EVT_joyIsPresent(void)
{
    static int      mask = 0;
    int             i;
    char            *tmp, name0[128], name1[128];
    static ibool    inited = false;

    if (inited)
	return mask;
    memset(EVT.joyMin,0,sizeof(EVT.joyMin));
    memset(EVT.joyCenter,0,sizeof(EVT.joyCenter));
    memset(EVT.joyMax,0,sizeof(EVT.joyMax));
    memset(EVT.joyPrev,0,sizeof(EVT.joyPrev));
    EVT.joyButState = 0;
    if ((tmp = getenv(ENV_JOYDEV0)) != NULL)
	strcpy(joystick0_dev,tmp);
    if ((tmp = getenv(ENV_JOYDEV1)) != NULL)
	strcpy(joystick1_dev,tmp);
    if ((joystick0_fd = open(joystick0_dev, O_RDONLY)) < 0)
	joystick0_fd = 0;
    if ((joystick1_fd = open(joystick1_dev, O_RDONLY)) < 0)
	joystick1_fd = 0;
    if (!joystick0_fd && !joystick1_fd) /* No joysticks detected */
	return 0;
    inited = true;
    if (ioctl(joystick0_fd ? joystick0_fd : joystick1_fd, JSIOCGVERSION, &js_version) < 0)
	return 0;

    /* Initialise joystick 0 */
    if (joystick0_fd) {
	ioctl(joystick0_fd, JSIOCGNAME(sizeof(name0)), name0);
	if (js_version & ~0xffff) {
	    struct js_event js;

	    ioctl(joystick0_fd, JSIOCGAXES, &js0_axes);
	    ioctl(joystick0_fd, JSIOCGBUTTONS, &js0_buttons);
	    axis0 = PM_calloc((int)js0_axes, sizeof(short));
	    buts0 = PM_malloc((int)js0_buttons);
	    /* Read the initial events */
	    while(dataReady(joystick0_fd)
		  && read(joystick0_fd, &js, sizeof(struct js_event)) == sizeof(struct js_event)
		  && (js.type & JS_EVENT_INIT)
		  ) {
		if (js.type & JS_EVENT_BUTTON)
		    buts0[js.number] = js.value;
		else if (js.type & JS_EVENT_AXIS)
		    axis0[js.number] = scaleJoyAxis(js.value,js.number);
		}
	    }
	else {
	    js0_axes = 2;
	    js0_buttons = 2;
	    axis0 = PM_calloc((int)js0_axes, sizeof(short));
	    buts0 = PM_malloc((int)js0_buttons);
	    }
	}

    /* Initialise joystick 1 */
    if (joystick1_fd) {
	ioctl(joystick1_fd, JSIOCGNAME(sizeof(name1)), name1);
	if (js_version & ~0xffff) {
	    struct js_event js;

	    ioctl(joystick1_fd, JSIOCGAXES, &js1_axes);
	    ioctl(joystick1_fd, JSIOCGBUTTONS, &js1_buttons);
	    axis1 = PM_calloc((int)js1_axes, sizeof(short));
	    buts1 = PM_malloc((int)js1_buttons);
	    /* Read the initial events */
	    while(dataReady(joystick1_fd)
		  && read(joystick1_fd, &js, sizeof(struct js_event))==sizeof(struct js_event)
		  && (js.type & JS_EVENT_INIT)
		  ) {
		if (js.type & JS_EVENT_BUTTON)
		    buts1[js.number] = js.value;
		else if (js.type & JS_EVENT_AXIS)
		    axis1[js.number] = scaleJoyAxis(js.value,js.number<<2);
		}
	    }
	else {
	    js1_axes = 2;
	    js1_buttons = 2;
	    axis1 = PM_calloc((int)js1_axes, sizeof(short));
	    buts1 = PM_malloc((int)js1_buttons);
	    }
	}

#ifdef  CHECKED
    fprintf(stderr,"Using joystick driver version %d.%d.%d\n",
	    js_version >> 16, (js_version >> 8) & 0xff, js_version & 0xff);
    if (joystick0_fd)
	fprintf(stderr,"Joystick 1 (%s): %s\n", joystick0_dev, name0);
    if (joystick1_fd)
	fprintf(stderr,"Joystick 2 (%s): %s\n", joystick1_dev, name1);
#endif
    mask = _EVT_readJoyAxis(EVT_JOY_AXIS_ALL,EVT.joyCenter);
    if (mask) {
	for (i = 0; i < JOY_NUM_AXES; i++)
	    EVT.joyMax[i] = EVT.joyCenter[i]*2;
	}
    return mask;
}

/****************************************************************************
DESCRIPTION:
Polls the joystick for position and button information.

HEADER:
event.h

REMARKS:
This routine is used to poll analogue joysticks for button and position
information. It should be called once for each main loop of the user
application, just before processing all pending events via EVT_getNext.
All information polled from the joystick will be posted to the event
queue for later retrieval.

Note:   Most analogue joysticks will provide readings that change even
	though the joystick has not moved. Hence if you call this routine
	you will likely get an EVT_JOYMOVE event every time through your
	event loop.

SEE ALSO:
EVT_getNext, EVT_peekNext, EVT_joySetUpperLeft, EVT_joySetLowerRight,
EVT_joySetCenter, EVT_joyIsPresent
****************************************************************************/
void EVTAPI EVT_pollJoystick(void)
{
    event_t evt;
    int     i,axis[JOY_NUM_AXES],newButState,mask,moved,ps;

    if ((js_version & ~0xFFFF) == 0 && EVT.joyMask) {
	/* Read joystick axes and post movement events if they have
	 * changed since the last time we polled. Until the events are
	 * actually flushed, we keep modifying the same joystick movement
	 * event, so you won't get multiple movement event
	 */
	mask = _EVT_readJoyAxis(EVT.joyMask,axis);
	newButState = _EVT_readJoyButtons();
	moved = false;
	for (i = 0; i < JOY_NUM_AXES; i++) {
	    if (mask & (EVT_JOY_AXIS_X1 << i))
		axis[i] = scaleJoyAxis(axis[i],i);
	    else
		axis[i] = EVT.joyPrev[i];
	    if (axis[i] != EVT.joyPrev[i])
		moved = true;
	    }
	if (moved) {
	    memcpy(EVT.joyPrev,axis,sizeof(EVT.joyPrev));
	    ps = _EVT_disableInt();
	    if (EVT.oldJoyMove != -1) {
		/* Modify the existing joystick movement event */
		EVT.evtq[EVT.oldJoyMove].message = newButState;
		EVT.evtq[EVT.oldJoyMove].where_x = EVT.joyPrev[0];
		EVT.evtq[EVT.oldJoyMove].where_y = EVT.joyPrev[1];
		EVT.evtq[EVT.oldJoyMove].relative_x = EVT.joyPrev[2];
		EVT.evtq[EVT.oldJoyMove].relative_y = EVT.joyPrev[3];
		}
	    else if (EVT.count < EVENTQSIZE) {
		/* Add a new joystick movement event */
		EVT.oldJoyMove = EVT.freeHead;
		memset(&evt,0,sizeof(evt));
		evt.what = EVT_JOYMOVE;
		evt.message = EVT.joyButState;
		evt.where_x = EVT.joyPrev[0];
		evt.where_y = EVT.joyPrev[1];
		evt.relative_x = EVT.joyPrev[2];
		evt.relative_y = EVT.joyPrev[3];
		addEvent(&evt);
		}
	    _EVT_restoreInt(ps);
	    }

	/* Read the joystick buttons, and post events to reflect the change
	 * in state for the joystick buttons.
	 */
	if (newButState != EVT.joyButState) {
	    if (EVT.count < EVENTQSIZE) {
		/* Add a new joystick movement event */
		ps = _EVT_disableInt();
		memset(&evt,0,sizeof(evt));
		evt.what = EVT_JOYCLICK;
		evt.message = newButState;
		EVT.evtq[EVT.oldJoyMove].where_x = EVT.joyPrev[0];
		EVT.evtq[EVT.oldJoyMove].where_y = EVT.joyPrev[1];
		EVT.evtq[EVT.oldJoyMove].relative_x = EVT.joyPrev[2];
		EVT.evtq[EVT.oldJoyMove].relative_y = EVT.joyPrev[3];
		addEvent(&evt);
		_EVT_restoreInt(ps);
		}
	    EVT.joyButState = newButState;
	    }
	}
}

/****************************************************************************
DESCRIPTION:
Calibrates the joystick upper left position

HEADER:
event.h

REMARKS:
This function can be used to zero in on better joystick calibration factors,
which may work better than the default simplistic calibration (which assumes
the joystick is centered when the event library is initialised).
To use this function, ask the user to hold the stick in the upper left
position and then have them press a key or button. and then call this
function. This function will then read the joystick and update the
calibration factors.

Usually, assuming that the stick was centered when the event library was
initialized, you really only need to call EVT_joySetLowerRight since the
upper left position is usually always 0,0 on most joysticks. However, the
safest procedure is to call all three calibration functions.

SEE ALSO:
EVT_joySetUpperLeft, EVT_joySetLowerRight, EVT_joyIsPresent
****************************************************************************/
void EVTAPI EVT_joySetUpperLeft(void)
{
    _EVT_readJoyAxis(EVT_JOY_AXIS_ALL,EVT.joyMin);
}

/****************************************************************************
DESCRIPTION:
Calibrates the joystick lower right position

HEADER:
event.h

REMARKS:
This function can be used to zero in on better joystick calibration factors,
which may work better than the default simplistic calibration (which assumes
the joystick is centered when the event library is initialised).
To use this function, ask the user to hold the stick in the lower right
position and then have them press a key or button. and then call this
function. This function will then read the joystick and update the
calibration factors.

Usually, assuming that the stick was centered when the event library was
initialized, you really only need to call EVT_joySetLowerRight since the
upper left position is usually always 0,0 on most joysticks. However, the
safest procedure is to call all three calibration functions.

SEE ALSO:
EVT_joySetUpperLeft, EVT_joySetCenter, EVT_joyIsPresent
****************************************************************************/
void EVTAPI EVT_joySetLowerRight(void)
{
    _EVT_readJoyAxis(EVT_JOY_AXIS_ALL,EVT.joyMax);
}

/****************************************************************************
DESCRIPTION:
Calibrates the joystick center position

HEADER:
event.h

REMARKS:
This function can be used to zero in on better joystick calibration factors,
which may work better than the default simplistic calibration (which assumes
the joystick is centered when the event library is initialised).
To use this function, ask the user to hold the stick in the center
position and then have them press a key or button. and then call this
function. This function will then read the joystick and update the
calibration factors.

Usually, assuming that the stick was centered when the event library was
initialized, you really only need to call EVT_joySetLowerRight since the
upper left position is usually always 0,0 on most joysticks. However, the
safest procedure is to call all three calibration functions.

SEE ALSO:
EVT_joySetUpperLeft, EVT_joySetLowerRight, EVT_joySetCenter
****************************************************************************/
void EVTAPI EVT_joySetCenter(void)
{
    _EVT_readJoyAxis(EVT_JOY_AXIS_ALL,EVT.joyCenter);
}
#endif

/****************************************************************************
REMARKS:
Pumps all messages in the message queue from Linux into our event queue.
****************************************************************************/
static void _EVT_pumpMessages(void)
{
    event_t                 evt;
    int                     i,numkeys, c;
    ibool                   release;
    static struct kbentry   ke;
    static char             buf[KBDREADBUFFERSIZE];
    static ushort           repeatKey[128] = {0};

    /* Poll keyboard events */
    while (dataReady(_PM_console_fd) && (numkeys = read(_PM_console_fd, buf, KBDREADBUFFERSIZE)) > 0) {
	for (i = 0; i < numkeys; i++) {
	    c = buf[i];
	    release = c & 0x80;
	    c &= 0x7F;

	    /* TODO:    This is wrong! We need this to be the time stamp at */
	    /*          ** interrupt ** time!! One solution would be to */
	    /*          put the keyboard and mouse polling loops into */
	    /*          a separate thread that can block on I/O to the */
	    /*          necessay file descriptor. */
	    evt.when = _EVT_getTicks();

	    if (release) {
		/* Key released */
		evt.what = EVT_KEYUP;
		switch (c) {
		    case KB_leftShift:
			_PM_modifiers &= ~EVT_LEFTSHIFT;
			break;
		    case KB_rightShift:
			_PM_modifiers &= ~EVT_RIGHTSHIFT;
			break;
		    case 29:
			_PM_modifiers &= ~(EVT_LEFTCTRL|EVT_CTRLSTATE);
			break;
		    case 97:            /* Control */
			_PM_modifiers &= ~EVT_CTRLSTATE;
			break;
		    case 56:
			_PM_modifiers &= ~(EVT_LEFTALT|EVT_ALTSTATE);
			break;
		    case 100:
			_PM_modifiers &= ~EVT_ALTSTATE;
			break;
		    default:
		    }
		evt.modifiers = _PM_modifiers;
		evt.message = keyUpMsg[c];
		if (EVT.count < EVENTQSIZE)
		    addEvent(&evt);
		keyUpMsg[c] = 0;
		repeatKey[c] = 0;
		}
	    else {
		/* Key pressed */
		evt.what = EVT_KEYDOWN;
		switch (c) {
		    case KB_leftShift:
			_PM_modifiers |= EVT_LEFTSHIFT;
			break;
		    case KB_rightShift:
			_PM_modifiers |= EVT_RIGHTSHIFT;
			break;
		    case 29:
			_PM_modifiers |= EVT_LEFTCTRL|EVT_CTRLSTATE;
			break;
		    case 97:            /* Control */
			_PM_modifiers |= EVT_CTRLSTATE;
			break;
		    case 56:
			_PM_modifiers |= EVT_LEFTALT|EVT_ALTSTATE;
			break;
		    case 100:
			_PM_modifiers |= EVT_ALTSTATE;
			break;
		    case KB_capsLock:   /* Caps Lock */
			_PM_leds ^= LED_CAP;
			ioctl(_PM_console_fd, KDSETLED, _PM_leds);
			break;
		    case KB_numLock:    /* Num Lock */
			_PM_leds ^= LED_NUM;
			ioctl(_PM_console_fd, KDSETLED, _PM_leds);
			break;
		    case KB_scrollLock: /* Scroll Lock */
			_PM_leds ^= LED_SCR;
			ioctl(_PM_console_fd, KDSETLED, _PM_leds);
			break;
		    default:
		    }
		evt.modifiers = _PM_modifiers;
		if (keyUpMsg[c]) {
		    evt.what = EVT_KEYREPEAT;
		    evt.message = keyUpMsg[c] | (repeatKey[c]++ << 16);
		    }
		else {
		    int asc;

		    evt.message = getKeyMapping(keymaps, NB_KEYMAPS, c) << 8;
		    ke.kb_index = c;
		    ke.kb_table = 0;
		    if ((_PM_modifiers & EVT_SHIFTKEY) || (_PM_leds & LED_CAP))