From 49693892ce35e95674fbb3d2a067c8fa0227da87 Mon Sep 17 00:00:00 2001 From: Max Schwarz Date: Mon, 17 Oct 2011 21:01:22 +0200 Subject: type-safe inline functions for bitmask manipulation We can't use BitIsSet/SetBit from the server (inputstr.h) since they operate on byte arrays. EvdevSetBit is added in preparation for the "smooth-scrolling on wheel emulation" patch. Signed-off-by: Max Schwarz Signed-off-by: Peter Hutterer --- src/evdev.c | 76 ++++++++++++++++++++++++++++++++++--------------------------- 1 file changed, 42 insertions(+), 34 deletions(-) (limited to 'src/evdev.c') diff --git a/src/evdev.c b/src/evdev.c index bf5ebe0..f99e0d5 100644 --- a/src/evdev.c +++ b/src/evdev.c @@ -174,6 +174,16 @@ static size_t EvdevCountBits(unsigned long *array, size_t nlongs) return count; } +static inline int EvdevBitIsSet(const unsigned long *array, int bit) +{ + return array[bit / LONG_BITS] & (1LL << (bit % LONG_BITS)); +} + +static inline void EvdevSetBit(unsigned long *array, int bit) +{ + array[bit / LONG_BITS] |= (1LL << (bit % LONG_BITS)); +} + static int EvdevGetMajorMinor(InputInfoPtr pInfo) { @@ -892,8 +902,6 @@ EvdevReadInput(InputInfoPtr pInfo) } } -#define TestBit(bit, array) ((array[(bit) / LONG_BITS]) & (1L << ((bit) % LONG_BITS))) - static void EvdevPtrCtrlProc(DeviceIntPtr device, PtrCtrl *ctrl) { @@ -969,7 +977,7 @@ EvdevAddAbsValuatorClass(DeviceIntPtr device) pInfo = device->public.devicePrivate; pEvdev = pInfo->private; - if (!TestBit(EV_ABS, pEvdev->bitmask)) + if (!EvdevBitIsSet(pEvdev->bitmask, EV_ABS)) goto out; num_axes = EvdevCountBits(pEvdev->abs_bitmask, NLONGS(ABS_MAX)); @@ -994,7 +1002,7 @@ EvdevAddAbsValuatorClass(DeviceIntPtr device) for (axis = ABS_X; i < MAX_VALUATORS && axis <= ABS_MAX; axis++) { pEvdev->axis_map[axis] = -1; - if (!TestBit(axis, pEvdev->abs_bitmask)) + if (!EvdevBitIsSet(pEvdev->abs_bitmask, axis)) continue; pEvdev->axis_map[axis] = i; i++; @@ -1036,7 +1044,7 @@ EvdevAddAbsValuatorClass(DeviceIntPtr device) if (!pEvdev->use_proximity) break; - if (TestBit(proximity_bits[i], pEvdev->key_bitmask)) + if (EvdevBitIsSet(pEvdev->key_bitmask, proximity_bits[i])) { InitProximityClassDeviceStruct(device); pEvdev->prox = valuator_mask_new(num_axes); @@ -1093,7 +1101,7 @@ EvdevAddRelValuatorClass(DeviceIntPtr device) pInfo = device->public.devicePrivate; pEvdev = pInfo->private; - if (!TestBit(EV_REL, pEvdev->bitmask)) + if (!EvdevBitIsSet(pEvdev->bitmask, EV_REL)) goto out; num_axes = EvdevCountBits(pEvdev->rel_bitmask, NLONGS(REL_MAX)); @@ -1102,11 +1110,11 @@ EvdevAddRelValuatorClass(DeviceIntPtr device) /* Wheels are special, we post them as button events. So let's ignore them * in the axes list too */ - if (TestBit(REL_WHEEL, pEvdev->rel_bitmask)) + if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_WHEEL)) num_axes--; - if (TestBit(REL_HWHEEL, pEvdev->rel_bitmask)) + if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_HWHEEL)) num_axes--; - if (TestBit(REL_DIAL, pEvdev->rel_bitmask)) + if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_DIAL)) num_axes--; if (num_axes <= 0) @@ -1131,7 +1139,7 @@ EvdevAddRelValuatorClass(DeviceIntPtr device) /* We don't post wheel events, so ignore them here too */ if (axis == REL_WHEEL || axis == REL_HWHEEL || axis == REL_DIAL) continue; - if (!TestBit(axis, pEvdev->rel_bitmask)) + if (!EvdevBitIsSet(pEvdev->rel_bitmask, axis)) continue; pEvdev->axis_map[axis] = i; i++; @@ -1527,7 +1535,7 @@ EvdevCache(InputInfoPtr pInfo) * to be static, always refresh it in evdev structure. */ for (i = ABS_X; i <= ABS_MAX; i++) { - if (TestBit(i, abs_bitmask)) { + if (EvdevBitIsSet(abs_bitmask, i)) { len = ioctl(pInfo->fd, EVIOCGABS(i), &pEvdev->absinfo[i]); if (len < 0) { xf86IDrvMsg(pInfo, X_ERROR, "ioctl EVIOCGABSi(%d) failed: %s\n", @@ -1625,7 +1633,7 @@ EvdevProbe(InputInfoPtr pInfo) for (i = BTN_MISC; i < BTN_JOYSTICK; i++) { int mapping = 0; - if (TestBit(i, pEvdev->key_bitmask)) + if (EvdevBitIsSet(pEvdev->key_bitmask, i)) { mapping = EvdevUtilButtonEventToButtonNumber(pEvdev, i); if (mapping > num_buttons) @@ -1633,9 +1641,9 @@ EvdevProbe(InputInfoPtr pInfo) } } - has_lmr = TestBit(BTN_LEFT, pEvdev->key_bitmask) || - TestBit(BTN_MIDDLE, pEvdev->key_bitmask) || - TestBit(BTN_RIGHT, pEvdev->key_bitmask); + has_lmr = EvdevBitIsSet(pEvdev->key_bitmask, BTN_LEFT) || + EvdevBitIsSet(pEvdev->key_bitmask, BTN_MIDDLE) || + EvdevBitIsSet(pEvdev->key_bitmask, BTN_RIGHT); if (num_buttons) { @@ -1645,16 +1653,16 @@ EvdevProbe(InputInfoPtr pInfo) } for (i = 0; i < REL_MAX; i++) { - if (TestBit(i, pEvdev->rel_bitmask)) { + if (EvdevBitIsSet(pEvdev->rel_bitmask, i)) { has_rel_axes = TRUE; break; } } if (has_rel_axes) { - if (TestBit(REL_WHEEL, pEvdev->rel_bitmask) || - TestBit(REL_HWHEEL, pEvdev->rel_bitmask) || - TestBit(REL_DIAL, pEvdev->rel_bitmask)) { + if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_WHEEL) || + EvdevBitIsSet(pEvdev->rel_bitmask, REL_HWHEEL) || + EvdevBitIsSet(pEvdev->rel_bitmask, REL_DIAL)) { xf86IDrvMsg(pInfo, X_PROBED, "Found scroll wheel(s)\n"); has_scroll = TRUE; if (!num_buttons) @@ -1669,8 +1677,8 @@ EvdevProbe(InputInfoPtr pInfo) xf86IDrvMsg(pInfo, X_PROBED, "Found relative axes\n"); pEvdev->flags |= EVDEV_RELATIVE_EVENTS; - if (TestBit(REL_X, pEvdev->rel_bitmask) && - TestBit(REL_Y, pEvdev->rel_bitmask)) { + if (EvdevBitIsSet(pEvdev->rel_bitmask, REL_X) && + EvdevBitIsSet(pEvdev->rel_bitmask, REL_Y)) { xf86IDrvMsg(pInfo, X_PROBED, "Found x and y relative axes\n"); } } else { @@ -1680,7 +1688,7 @@ EvdevProbe(InputInfoPtr pInfo) } for (i = 0; i < ABS_MAX; i++) { - if (TestBit(i, pEvdev->abs_bitmask)) { + if (EvdevBitIsSet(pEvdev->abs_bitmask, i)) { has_abs_axes = TRUE; break; } @@ -1694,12 +1702,12 @@ EvdevProbe(InputInfoPtr pInfo) xf86IDrvMsg(pInfo, X_PROBED, "Found absolute axes\n"); pEvdev->flags |= EVDEV_ABSOLUTE_EVENTS; - if ((TestBit(ABS_X, pEvdev->abs_bitmask) && - TestBit(ABS_Y, pEvdev->abs_bitmask))) { + if ((EvdevBitIsSet(pEvdev->abs_bitmask, ABS_X) && + EvdevBitIsSet(pEvdev->abs_bitmask, ABS_Y))) { xf86IDrvMsg(pInfo, X_PROBED, "Found x and y absolute axes\n"); - if (TestBit(BTN_TOOL_PEN, pEvdev->key_bitmask) || - TestBit(BTN_STYLUS, pEvdev->key_bitmask) || - TestBit(BTN_STYLUS2, pEvdev->key_bitmask)) + if (EvdevBitIsSet(pEvdev->key_bitmask, BTN_TOOL_PEN) || + EvdevBitIsSet(pEvdev->key_bitmask, BTN_STYLUS) || + EvdevBitIsSet(pEvdev->key_bitmask, BTN_STYLUS2)) { xf86IDrvMsg(pInfo, X_PROBED, "Found absolute tablet.\n"); pEvdev->flags |= EVDEV_TABLET; @@ -1708,9 +1716,9 @@ EvdevProbe(InputInfoPtr pInfo) pEvdev->num_buttons = 7; /* LMR + scroll wheels */ pEvdev->flags |= EVDEV_BUTTON_EVENTS; } - } else if (TestBit(ABS_PRESSURE, pEvdev->abs_bitmask) || - TestBit(BTN_TOUCH, pEvdev->key_bitmask)) { - if (has_lmr || TestBit(BTN_TOOL_FINGER, pEvdev->key_bitmask)) { + } else if (EvdevBitIsSet(pEvdev->abs_bitmask, ABS_PRESSURE) || + EvdevBitIsSet(pEvdev->key_bitmask, BTN_TOUCH)) { + if (has_lmr || EvdevBitIsSet(pEvdev->key_bitmask, BTN_TOOL_FINGER)) { xf86IDrvMsg(pInfo, X_PROBED, "Found absolute touchpad.\n"); pEvdev->flags |= EVDEV_TOUCHPAD; } else { @@ -1718,8 +1726,8 @@ EvdevProbe(InputInfoPtr pInfo) pEvdev->flags |= EVDEV_TOUCHSCREEN; pEvdev->flags |= EVDEV_BUTTON_EVENTS; } - } else if (!(TestBit(REL_X, pEvdev->rel_bitmask) && - TestBit(REL_Y, pEvdev->rel_bitmask)) && has_lmr) { + } else if (!(EvdevBitIsSet(pEvdev->rel_bitmask, REL_X) && + EvdevBitIsSet(pEvdev->rel_bitmask, REL_Y)) && has_lmr) { /* some touchscreens use BTN_LEFT rather than BTN_TOUCH */ xf86IDrvMsg(pInfo, X_PROBED, "Found absolute touchscreen\n"); pEvdev->flags |= EVDEV_TOUCHSCREEN; @@ -1729,7 +1737,7 @@ EvdevProbe(InputInfoPtr pInfo) } for (i = 0; i < BTN_MISC; i++) { - if (TestBit(i, pEvdev->key_bitmask)) { + if (EvdevBitIsSet(pEvdev->key_bitmask, i)) { xf86IDrvMsg(pInfo, X_PROBED, "Found keys\n"); pEvdev->flags |= EVDEV_KEYBOARD_EVENTS; has_keys = TRUE; @@ -2232,7 +2240,7 @@ static void EvdevInitButtonLabels(EvdevPtr pEvdev, int natoms, Atom *atoms) for (button = BTN_MISC; button < BTN_JOYSTICK; button++) { - if (TestBit(button, pEvdev->key_bitmask)) + if (EvdevBitIsSet(pEvdev->key_bitmask, button)) { int group = (button % 0x100)/16; int idx = button - ((button/16) * 16); 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