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Diffstat (limited to 'xorg-server/dix/ptrveloc.c')
-rw-r--r--xorg-server/dix/ptrveloc.c259
1 files changed, 108 insertions, 151 deletions
diff --git a/xorg-server/dix/ptrveloc.c b/xorg-server/dix/ptrveloc.c
index dfccf1581..53a0d0397 100644
--- a/xorg-server/dix/ptrveloc.c
+++ b/xorg-server/dix/ptrveloc.c
@@ -63,9 +63,9 @@
/* fwds */
int
SetAccelerationProfile(DeviceVelocityPtr vel, int profile_num);
-static float
-SimpleSmoothProfile(DeviceIntPtr dev, DeviceVelocityPtr vel, float velocity,
- float threshold, float acc);
+static double
+SimpleSmoothProfile(DeviceIntPtr dev, DeviceVelocityPtr vel, double velocity,
+ double threshold, double acc);
static PointerAccelerationProfileFunc
GetAccelerationProfile(DeviceVelocityPtr vel, int profile_num);
static BOOL
@@ -478,14 +478,10 @@ DoGetDirection(int dx, int dy){
else
dir = UNDEFINED; /* shouldn't happen */
} else { /* compute angle and set appropriate flags */
- float r;
+ double r;
int i1, i2;
-#ifdef _ISOC99_SOURCE
- r = atan2f(dy, dx);
-#else
r = atan2(dy, dx);
-#endif
/* find direction.
*
* Add 360° to avoid r become negative since C has no well-defined
@@ -524,8 +520,7 @@ static int
GetDirection(int dx, int dy){
static int cache[DIRECTION_CACHE_SIZE][DIRECTION_CACHE_SIZE];
int dir;
- if (abs(dx) <= DIRECTION_CACHE_RANGE &&
- abs(dy) <= DIRECTION_CACHE_RANGE) {
+ if (abs(dx) <= DIRECTION_CACHE_RANGE && abs(dy) <= DIRECTION_CACHE_RANGE) {
/* cacheable */
dir = cache[DIRECTION_CACHE_RANGE+dx][DIRECTION_CACHE_RANGE+dy];
if(dir == 0) {
@@ -553,7 +548,7 @@ GetDirection(int dx, int dy){
* 0/0 and set it as the current one.
*/
static inline void
-FeedTrackers(DeviceVelocityPtr vel, int dx, int dy, int cur_t)
+FeedTrackers(DeviceVelocityPtr vel, double dx, double dy, int cur_t)
{
int n;
for(n = 0; n < vel->num_tracker; n++){
@@ -561,8 +556,8 @@ FeedTrackers(DeviceVelocityPtr vel, int dx, int dy, int cur_t)
vel->tracker[n].dy += dy;
}
n = (vel->cur_tracker + 1) % vel->num_tracker;
- vel->tracker[n].dx = 0;
- vel->tracker[n].dy = 0;
+ vel->tracker[n].dx = 0.0;
+ vel->tracker[n].dy = 0.0;
vel->tracker[n].time = cur_t;
vel->tracker[n].dir = GetDirection(dx, dy);
DebugAccelF("(dix prtacc) motion [dx: %i dy: %i dir:%i diff: %i]\n",
@@ -576,9 +571,9 @@ FeedTrackers(DeviceVelocityPtr vel, int dx, int dy, int cur_t)
* velocity scaling.
* This assumes linear motion.
*/
-static float
+static double
CalcTracker(const MotionTracker *tracker, int cur_t){
- float dist = sqrt(tracker->dx * tracker->dx + tracker->dy * tracker->dy);
+ double dist = sqrt(tracker->dx * tracker->dx + tracker->dy * tracker->dy);
int dtime = cur_t - tracker->time;
if(dtime > 0)
return dist / dtime;
@@ -593,16 +588,16 @@ CalcTracker(const MotionTracker *tracker, int cur_t){
*
* @return The tracker's velocity or 0 if the above conditions are unmet
*/
-static float
+static double
QueryTrackers(DeviceVelocityPtr vel, int cur_t){
int offset, dir = UNDEFINED, used_offset = -1, age_ms;
/* initial velocity: a low-offset, valid velocity */
- float initial_velocity = 0, result = 0, velocity_diff;
- float velocity_factor = vel->corr_mul * vel->const_acceleration; /* premultiply */
+ double initial_velocity = 0, result = 0, velocity_diff;
+ double velocity_factor = vel->corr_mul * vel->const_acceleration; /* premultiply */
/* loop from current to older data */
for(offset = 1; offset < vel->num_tracker; offset++){
MotionTracker *tracker = TRACKER(vel, offset);
- float tracker_velocity;
+ double tracker_velocity;
age_ms = cur_t - tracker->time;
@@ -674,11 +669,11 @@ QueryTrackers(DeviceVelocityPtr vel, int cur_t){
BOOL
ProcessVelocityData2D(
DeviceVelocityPtr vel,
- int dx,
- int dy,
+ double dx,
+ double dy,
int time)
{
- float velocity;
+ double velocity;
vel->last_velocity = vel->velocity;
@@ -694,12 +689,12 @@ ProcessVelocityData2D(
* this flattens significant ( > 1) mickeys a little bit for more steady
* constant-velocity response
*/
-static inline float
-ApplySimpleSoftening(int prev_delta, int delta)
+static inline double
+ApplySimpleSoftening(double prev_delta, double delta)
{
- float result = delta;
+ double result = delta;
- if (delta < -1 || delta > 1) {
+ if (delta < -1.0 || delta > 1.0) {
if (delta > prev_delta)
result -= 0.5;
else if (delta < prev_delta)
@@ -718,8 +713,8 @@ ApplySimpleSoftening(int prev_delta, int delta)
static void
ApplySoftening(
DeviceVelocityPtr vel,
- float* fdx,
- float* fdy)
+ double* fdx,
+ double* fdy)
{
if (vel->use_softening) {
*fdx = ApplySimpleSoftening(vel->last_dx, *fdx);
@@ -728,7 +723,7 @@ ApplySoftening(
}
static void
-ApplyConstantDeceleration(DeviceVelocityPtr vel, float *fdx, float *fdy)
+ApplyConstantDeceleration(DeviceVelocityPtr vel, double *fdx, double *fdy)
{
*fdx *= vel->const_acceleration;
*fdy *= vel->const_acceleration;
@@ -737,15 +732,15 @@ ApplyConstantDeceleration(DeviceVelocityPtr vel, float *fdx, float *fdy)
/*
* compute the acceleration for given velocity and enforce min_acceleartion
*/
-float
+double
BasicComputeAcceleration(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float threshold,
- float acc){
+ double velocity,
+ double threshold,
+ double acc){
- float result;
+ double result;
result = vel->Profile(dev, vel, velocity, threshold, acc);
/* enforce min_acceleration */
@@ -759,13 +754,13 @@ BasicComputeAcceleration(
* If the velocity has changed, an average is taken of 6 velocity factors:
* current velocity, last velocity and 4 times the average between the two.
*/
-static float
+static double
ComputeAcceleration(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float threshold,
- float acc){
- float result;
+ double threshold,
+ double acc){
+ double result;
if(vel->velocity <= 0){
DebugAccelF("(dix ptracc) profile skipped\n");
@@ -808,13 +803,13 @@ ComputeAcceleration(
/**
* Polynomial function similar previous one, but with f(1) = 1
*/
-static float
+static double
PolynomialAccelerationProfile(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float ignored,
- float acc)
+ double velocity,
+ double ignored,
+ double acc)
{
return pow(velocity, (acc - 1.0) * 0.5);
}
@@ -824,13 +819,13 @@ PolynomialAccelerationProfile(
* returns acceleration for velocity.
* This profile selects the two functions like the old scheme did
*/
-static float
+static double
ClassicProfile(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float threshold,
- float acc)
+ double velocity,
+ double threshold,
+ double acc)
{
if (threshold > 0) {
return SimpleSmoothProfile (dev,
@@ -856,15 +851,15 @@ ClassicProfile(
* This has the expense of overall response dependency on min-acceleration.
* In effect, min_acceleration mimics const_acceleration in this profile.
*/
-static float
+static double
PowerProfile(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float threshold,
- float acc)
+ double velocity,
+ double threshold,
+ double acc)
{
- float vel_dist;
+ double vel_dist;
acc = (acc-1.0) * 0.1f + 1.0; /* without this, acc of 2 is unuseable */
@@ -882,11 +877,11 @@ PowerProfile(
* - starts faster than a sinoid
* - smoothness C1 (Cinf if you dare to ignore endpoints)
*/
-static inline float
-CalcPenumbralGradient(float x){
+static inline double
+CalcPenumbralGradient(double x){
x *= 2.0f;
x -= 1.0f;
- return 0.5f + (x * sqrt(1.0f - x*x) + asin(x))/M_PI;
+ return 0.5f + (x * sqrt(1.0 - x*x) + asin(x))/M_PI;
}
@@ -894,13 +889,13 @@ CalcPenumbralGradient(float x){
* acceleration function similar to classic accelerated/unaccelerated,
* but with smooth transition in between (and towards zero for adaptive dec.).
*/
-static float
+static double
SimpleSmoothProfile(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float threshold,
- float acc)
+ double velocity,
+ double threshold,
+ double acc)
{
if(velocity < 1.0f)
return CalcPenumbralGradient(0.5 + velocity*0.5) * 2.0f - 1.0f;
@@ -920,15 +915,15 @@ SimpleSmoothProfile(
* This profile uses the first half of the penumbral gradient as a start
* and then scales linearly.
*/
-static float
+static double
SmoothLinearProfile(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float threshold,
- float acc)
+ double velocity,
+ double threshold,
+ double acc)
{
- float res, nv;
+ double res, nv;
if(acc > 1.0f)
acc -= 1.0f; /*this is so acc = 1 is no acceleration */
@@ -955,15 +950,15 @@ SmoothLinearProfile(
* From 0 to threshold, the response graduates smoothly from min_accel to
* acceleration. Beyond threshold it is exactly the specified acceleration.
*/
-static float
+static double
SmoothLimitedProfile(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float threshold,
- float acc)
+ double velocity,
+ double threshold,
+ double acc)
{
- float res;
+ double res;
if(velocity >= threshold || threshold == 0.0f)
return acc;
@@ -976,24 +971,24 @@ SmoothLimitedProfile(
}
-static float
+static double
LinearProfile(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float threshold,
- float acc)
+ double velocity,
+ double threshold,
+ double acc)
{
return acc * velocity;
}
-static float
+static double
NoProfile(
DeviceIntPtr dev,
DeviceVelocityPtr vel,
- float velocity,
- float threshold,
- float acc)
+ double velocity,
+ double threshold,
+ double acc)
{
return 1.0f;
}
@@ -1119,11 +1114,11 @@ acceleratePointerPredictable(
ValuatorMask* val,
CARD32 evtime)
{
- int dx = 0, dy = 0, tmpi;
+ double dx = 0, dy = 0;
DeviceVelocityPtr velocitydata = GetDevicePredictableAccelData(dev);
Bool soften = TRUE;
- if (!velocitydata)
+ if (valuator_mask_num_valuators(val) == 0 || !velocitydata)
return;
if (velocitydata->statistics.profile_number == AccelProfileNone &&
@@ -1132,59 +1127,39 @@ acceleratePointerPredictable(
}
if (valuator_mask_isset(val, 0)) {
- dx = valuator_mask_get(val, 0);
+ dx = valuator_mask_get_double(val, 0);
}
if (valuator_mask_isset(val, 1)) {
- dy = valuator_mask_get(val, 1);
+ dy = valuator_mask_get_double(val, 1);
}
- if (dx || dy){
+ if (dx != 0.0 || dy != 0.0) {
/* reset non-visible state? */
if (ProcessVelocityData2D(velocitydata, dx , dy, evtime)) {
soften = FALSE;
}
if (dev->ptrfeed && dev->ptrfeed->ctrl.num) {
- float mult;
+ double mult;
/* invoke acceleration profile to determine acceleration */
mult = ComputeAcceleration (dev, velocitydata,
- dev->ptrfeed->ctrl.threshold,
- (float)dev->ptrfeed->ctrl.num /
- (float)dev->ptrfeed->ctrl.den);
+ dev->ptrfeed->ctrl.threshold,
+ (double)dev->ptrfeed->ctrl.num /
+ (double)dev->ptrfeed->ctrl.den);
if(mult != 1.0f || velocitydata->const_acceleration != 1.0f) {
- float fdx = dx,
- fdy = dy;
-
if (mult > 1.0f && soften)
- ApplySoftening(velocitydata, &fdx, &fdy);
- ApplyConstantDeceleration(velocitydata, &fdx, &fdy);
-
- /* Calculate the new delta (with accel) and drop it back
- * into the valuator masks */
- if (dx) {
- float tmp;
- tmp = mult * fdx + dev->last.remainder[0];
- /* Since it may not be apparent: lrintf() does not offer
- * strong statements about rounding; however because we
- * process each axis conditionally, there's no danger
- * of a toggling remainder. Its lack of guarantees likely
- * makes it faster on the average target. */
- tmpi = lrintf(tmp);
- valuator_mask_set(val, 0, tmpi);
- dev->last.remainder[0] = tmp - (float)tmpi;
- }
- if (dy) {
- float tmp;
- tmp = mult * fdy + dev->last.remainder[1];
- tmpi = lrintf(tmp);
- valuator_mask_set(val, 1, tmpi);
- dev->last.remainder[1] = tmp - (float)tmpi;
- }
- DebugAccelF("pos (%i | %i) remainders x: %.3f y: %.3f delta x:%.3f y:%.3f\n",
- *px, *py, dev->last.remainder[0], dev->last.remainder[1], fdx, fdy);
+ ApplySoftening(velocitydata, &dx, &dy);
+ ApplyConstantDeceleration(velocitydata, &dx, &dy);
+
+ if (dx != 0.0)
+ valuator_mask_set_double(val, 0, mult * dx);
+ if (dy != 0.0)
+ valuator_mask_set_double(val, 1, mult * dy);
+ DebugAccelF("pos (%i | %i) delta x:%.3f y:%.3f\n", mult * dx,
+ mult * dy);
}
}
}
@@ -1205,8 +1180,8 @@ acceleratePointerLightweight(
ValuatorMask* val,
CARD32 ignored)
{
- float mult = 0.0, tmpf;
- int dx = 0, dy = 0, tmpi;
+ double mult = 0.0, tmpf;
+ double dx = 0.0, dy = 0.0;
if (valuator_mask_isset(val, 0)) {
dx = valuator_mask_get(val, 0);
@@ -1216,53 +1191,35 @@ acceleratePointerLightweight(
dy = valuator_mask_get(val, 1);
}
- if (!dx && !dy)
+ if (valuator_mask_num_valuators(val) == 0)
return;
if (dev->ptrfeed && dev->ptrfeed->ctrl.num) {
/* modeled from xf86Events.c */
if (dev->ptrfeed->ctrl.threshold) {
- if ((abs(dx) + abs(dy)) >= dev->ptrfeed->ctrl.threshold) {
- tmpf = ((float)dx *
- (float)(dev->ptrfeed->ctrl.num)) /
- (float)(dev->ptrfeed->ctrl.den) +
- dev->last.remainder[0];
- if (dx) {
- tmpi = (int) tmpf;
- valuator_mask_set(val, 0, tmpi);
- dev->last.remainder[0] = tmpf - (float)tmpi;
+ if ((fabs(dx) + fabs(dy)) >= dev->ptrfeed->ctrl.threshold) {
+ if (dx != 0.0) {
+ tmpf = (dx * (double)(dev->ptrfeed->ctrl.num)) /
+ (double)(dev->ptrfeed->ctrl.den);
+ valuator_mask_set_double(val, 0, tmpf);
}
- tmpf = ((float)dy *
- (float)(dev->ptrfeed->ctrl.num)) /
- (float)(dev->ptrfeed->ctrl.den) +
- dev->last.remainder[1];
- if (dy) {
- tmpi = (int) tmpf;
- valuator_mask_set(val, 1, tmpi);
- dev->last.remainder[1] = tmpf - (float)tmpi;
+ if (dy != 0.0) {
+ tmpf = (dy * (double)(dev->ptrfeed->ctrl.num)) /
+ (double)(dev->ptrfeed->ctrl.den);
+ valuator_mask_set_double(val, 1, tmpf);
}
}
}
else {
- mult = pow((float)dx * (float)dx + (float)dy * (float)dy,
- ((float)(dev->ptrfeed->ctrl.num) /
- (float)(dev->ptrfeed->ctrl.den) - 1.0) /
+ mult = pow(dx * dx + dy * dy,
+ ((double)(dev->ptrfeed->ctrl.num) /
+ (double)(dev->ptrfeed->ctrl.den) - 1.0) /
2.0) / 2.0;
- if (dx) {
- tmpf = mult * (float)dx +
- dev->last.remainder[0];
- tmpi = (int) tmpf;
- valuator_mask_set(val, 0, tmpi);
- dev->last.remainder[0] = tmpf - (float)tmpi;
- }
- if (dy) {
- tmpf = mult * (float)dy +
- dev->last.remainder[1];
- tmpi = (int)tmpf;
- valuator_mask_set(val, 1, tmpi);
- dev->last.remainder[1] = tmpf - (float)tmpi;
- }
+ if (dx != 0.0)
+ valuator_mask_set_double(val, 0, mult * dx);
+ if (dy != 0.0)
+ valuator_mask_set_double(val, 1, mult * dy);
}
}
}