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-rw-r--r--xorg-server/randr/rrtransform.c368
1 files changed, 191 insertions, 177 deletions
diff --git a/xorg-server/randr/rrtransform.c b/xorg-server/randr/rrtransform.c
index e1620498b..f93181d2e 100644
--- a/xorg-server/randr/rrtransform.c
+++ b/xorg-server/randr/rrtransform.c
@@ -24,63 +24,59 @@
#include "rrtransform.h"
void
-RRTransformInit (RRTransformPtr transform)
+RRTransformInit(RRTransformPtr transform)
{
- pixman_transform_init_identity (&transform->transform);
- pixman_f_transform_init_identity (&transform->f_transform);
- pixman_f_transform_init_identity (&transform->f_inverse);
+ pixman_transform_init_identity(&transform->transform);
+ pixman_f_transform_init_identity(&transform->f_transform);
+ pixman_f_transform_init_identity(&transform->f_inverse);
transform->filter = NULL;
transform->params = NULL;
transform->nparams = 0;
}
void
-RRTransformFini (RRTransformPtr transform)
+RRTransformFini(RRTransformPtr transform)
{
free(transform->params);
}
Bool
-RRTransformEqual (RRTransformPtr a, RRTransformPtr b)
+RRTransformEqual(RRTransformPtr a, RRTransformPtr b)
{
- if (a && pixman_transform_is_identity (&a->transform))
- a = NULL;
- if (b && pixman_transform_is_identity (&b->transform))
- b = NULL;
+ if (a && pixman_transform_is_identity(&a->transform))
+ a = NULL;
+ if (b && pixman_transform_is_identity(&b->transform))
+ b = NULL;
if (a == NULL && b == NULL)
- return TRUE;
+ return TRUE;
if (a == NULL || b == NULL)
- return FALSE;
- if (memcmp (&a->transform, &b->transform, sizeof (a->transform)) != 0)
- return FALSE;
+ return FALSE;
+ if (memcmp(&a->transform, &b->transform, sizeof(a->transform)) != 0)
+ return FALSE;
if (a->filter != b->filter)
- return FALSE;
+ return FALSE;
if (a->nparams != b->nparams)
- return FALSE;
- if (memcmp (a->params, b->params, a->nparams * sizeof (xFixed)) != 0)
- return FALSE;
+ return FALSE;
+ if (memcmp(a->params, b->params, a->nparams * sizeof(xFixed)) != 0)
+ return FALSE;
return TRUE;
}
Bool
-RRTransformSetFilter (RRTransformPtr dst,
- PictFilterPtr filter,
- xFixed *params,
- int nparams,
- int width,
- int height)
+RRTransformSetFilter(RRTransformPtr dst,
+ PictFilterPtr filter,
+ xFixed * params, int nparams, int width, int height)
{
- xFixed *new_params;
+ xFixed *new_params;
- if (nparams)
- {
- new_params = malloc(nparams * sizeof (xFixed));
- if (!new_params)
- return FALSE;
- memcpy (new_params, params, nparams * sizeof (xFixed));
+ if (nparams) {
+ new_params = malloc(nparams * sizeof(xFixed));
+ if (!new_params)
+ return FALSE;
+ memcpy(new_params, params, nparams * sizeof(xFixed));
}
else
- new_params = NULL;
+ new_params = NULL;
free(dst->params);
dst->filter = filter;
dst->params = new_params;
@@ -91,27 +87,26 @@ RRTransformSetFilter (RRTransformPtr dst,
}
Bool
-RRTransformCopy (RRTransformPtr dst, RRTransformPtr src)
+RRTransformCopy(RRTransformPtr dst, RRTransformPtr src)
{
- if (src && pixman_transform_is_identity (&src->transform))
- src = NULL;
+ if (src && pixman_transform_is_identity(&src->transform))
+ src = NULL;
- if (src)
- {
- if (!RRTransformSetFilter (dst, src->filter,
- src->params, src->nparams, src->width, src->height))
- return FALSE;
- dst->transform = src->transform;
- dst->f_transform = src->f_transform;
- dst->f_inverse = src->f_inverse;
+ if (src) {
+ if (!RRTransformSetFilter(dst, src->filter,
+ src->params, src->nparams, src->width,
+ src->height))
+ return FALSE;
+ dst->transform = src->transform;
+ dst->f_transform = src->f_transform;
+ dst->f_inverse = src->f_inverse;
}
- else
- {
- if (!RRTransformSetFilter (dst, NULL, NULL, 0, 0, 0))
- return FALSE;
- pixman_transform_init_identity (&dst->transform);
- pixman_f_transform_init_identity (&dst->f_transform);
- pixman_f_transform_init_identity (&dst->f_inverse);
+ else {
+ if (!RRTransformSetFilter(dst, NULL, NULL, 0, 0, 0))
+ return FALSE;
+ pixman_transform_init_identity(&dst->transform);
+ pixman_f_transform_init_identity(&dst->f_transform);
+ pixman_f_transform_init_identity(&dst->f_inverse);
}
return TRUE;
}
@@ -125,13 +120,13 @@ RRTransformRescale(struct pixman_f_transform *f_transform, double limit)
int i, j;
for (j = 0; j < 3; j++)
- for (i = 0; i < 3; i++)
- if ((v = abs (f_transform->m[j][i])) > max)
- max = v;
+ for (i = 0; i < 3; i++)
+ if ((v = abs(f_transform->m[j][i])) > max)
+ max = v;
scale = limit / max;
for (j = 0; j < 3; j++)
- for (i = 0; i < 3; i++)
- f_transform->m[j][i] *= scale;
+ for (i = 0; i < 3; i++)
+ f_transform->m[j][i] *= scale;
}
/*
@@ -142,142 +137,161 @@ RRTransformRescale(struct pixman_f_transform *f_transform, double limit)
* Return TRUE if the resulting transform is not a simple translation.
*/
Bool
-RRTransformCompute (int x,
- int y,
- int width,
- int height,
- Rotation rotation,
- RRTransformPtr rr_transform,
-
- PictTransformPtr transform,
- struct pixman_f_transform *f_transform,
- struct pixman_f_transform *f_inverse)
+RRTransformCompute(int x,
+ int y,
+ int width,
+ int height,
+ Rotation rotation,
+ RRTransformPtr rr_transform,
+ PictTransformPtr transform,
+ struct pixman_f_transform *f_transform,
+ struct pixman_f_transform *f_inverse)
{
- PictTransform t_transform, inverse;
+ PictTransform t_transform, inverse;
struct pixman_f_transform tf_transform, tf_inverse;
- Bool overflow = FALSE;
+ Bool overflow = FALSE;
+
+ if (!transform)
+ transform = &t_transform;
+ if (!f_transform)
+ f_transform = &tf_transform;
+ if (!f_inverse)
+ f_inverse = &tf_inverse;
+
+ pixman_transform_init_identity(transform);
+ pixman_transform_init_identity(&inverse);
+ pixman_f_transform_init_identity(f_transform);
+ pixman_f_transform_init_identity(f_inverse);
+ if (rotation != RR_Rotate_0) {
+ double f_rot_cos, f_rot_sin, f_rot_dx, f_rot_dy;
+ double f_scale_x, f_scale_y, f_scale_dx, f_scale_dy;
+ xFixed rot_cos, rot_sin, rot_dx, rot_dy;
+ xFixed scale_x, scale_y, scale_dx, scale_dy;
- if (!transform) transform = &t_transform;
- if (!f_transform) f_transform = &tf_transform;
- if (!f_inverse) f_inverse = &tf_inverse;
+ /* rotation */
+ switch (rotation & 0xf) {
+ default:
+ case RR_Rotate_0:
+ f_rot_cos = 1;
+ f_rot_sin = 0;
+ f_rot_dx = 0;
+ f_rot_dy = 0;
+ rot_cos = F(1);
+ rot_sin = F(0);
+ rot_dx = F(0);
+ rot_dy = F(0);
+ break;
+ case RR_Rotate_90:
+ f_rot_cos = 0;
+ f_rot_sin = 1;
+ f_rot_dx = height;
+ f_rot_dy = 0;
+ rot_cos = F(0);
+ rot_sin = F(1);
+ rot_dx = F(height);
+ rot_dy = F(0);
+ break;
+ case RR_Rotate_180:
+ f_rot_cos = -1;
+ f_rot_sin = 0;
+ f_rot_dx = width;
+ f_rot_dy = height;
+ rot_cos = F(-1);
+ rot_sin = F(0);
+ rot_dx = F(width);
+ rot_dy = F(height);
+ break;
+ case RR_Rotate_270:
+ f_rot_cos = 0;
+ f_rot_sin = -1;
+ f_rot_dx = 0;
+ f_rot_dy = width;
+ rot_cos = F(0);
+ rot_sin = F(-1);
+ rot_dx = F(0);
+ rot_dy = F(width);
+ break;
+ }
- pixman_transform_init_identity (transform);
- pixman_transform_init_identity (&inverse);
- pixman_f_transform_init_identity (f_transform);
- pixman_f_transform_init_identity (f_inverse);
- if (rotation != RR_Rotate_0)
- {
- double f_rot_cos, f_rot_sin, f_rot_dx, f_rot_dy;
- double f_scale_x, f_scale_y, f_scale_dx, f_scale_dy;
- xFixed rot_cos, rot_sin, rot_dx, rot_dy;
- xFixed scale_x, scale_y, scale_dx, scale_dy;
+ pixman_transform_rotate(transform, &inverse, rot_cos, rot_sin);
+ pixman_transform_translate(transform, &inverse, rot_dx, rot_dy);
+ pixman_f_transform_rotate(f_transform, f_inverse, f_rot_cos, f_rot_sin);
+ pixman_f_transform_translate(f_transform, f_inverse, f_rot_dx,
+ f_rot_dy);
- /* rotation */
- switch (rotation & 0xf) {
- default:
- case RR_Rotate_0:
- f_rot_cos = 1; f_rot_sin = 0;
- f_rot_dx = 0; f_rot_dy = 0;
- rot_cos = F ( 1); rot_sin = F ( 0);
- rot_dx = F ( 0); rot_dy = F ( 0);
- break;
- case RR_Rotate_90:
- f_rot_cos = 0; f_rot_sin = 1;
- f_rot_dx = height; f_rot_dy = 0;
- rot_cos = F ( 0); rot_sin = F ( 1);
- rot_dx = F ( height); rot_dy = F (0);
- break;
- case RR_Rotate_180:
- f_rot_cos = -1; f_rot_sin = 0;
- f_rot_dx = width; f_rot_dy = height;
- rot_cos = F (-1); rot_sin = F ( 0);
- rot_dx = F (width); rot_dy = F ( height);
- break;
- case RR_Rotate_270:
- f_rot_cos = 0; f_rot_sin = -1;
- f_rot_dx = 0; f_rot_dy = width;
- rot_cos = F ( 0); rot_sin = F (-1);
- rot_dx = F ( 0); rot_dy = F ( width);
- break;
- }
-
- pixman_transform_rotate (transform, &inverse, rot_cos, rot_sin);
- pixman_transform_translate (transform, &inverse, rot_dx, rot_dy);
- pixman_f_transform_rotate (f_transform, f_inverse, f_rot_cos, f_rot_sin);
- pixman_f_transform_translate (f_transform, f_inverse, f_rot_dx, f_rot_dy);
+ /* reflection */
+ f_scale_x = 1;
+ f_scale_dx = 0;
+ f_scale_y = 1;
+ f_scale_dy = 0;
+ scale_x = F(1);
+ scale_dx = 0;
+ scale_y = F(1);
+ scale_dy = 0;
+ if (rotation & RR_Reflect_X) {
+ f_scale_x = -1;
+ scale_x = F(-1);
+ if (rotation & (RR_Rotate_0 | RR_Rotate_180)) {
+ f_scale_dx = width;
+ scale_dx = F(width);
+ }
+ else {
+ f_scale_dx = height;
+ scale_dx = F(height);
+ }
+ }
+ if (rotation & RR_Reflect_Y) {
+ f_scale_y = -1;
+ scale_y = F(-1);
+ if (rotation & (RR_Rotate_0 | RR_Rotate_180)) {
+ f_scale_dy = height;
+ scale_dy = F(height);
+ }
+ else {
+ f_scale_dy = width;
+ scale_dy = F(width);
+ }
+ }
- /* reflection */
- f_scale_x = 1;
- f_scale_dx = 0;
- f_scale_y = 1;
- f_scale_dy = 0;
- scale_x = F (1);
- scale_dx = 0;
- scale_y = F (1);
- scale_dy = 0;
- if (rotation & RR_Reflect_X)
- {
- f_scale_x = -1;
- scale_x = F(-1);
- if (rotation & (RR_Rotate_0|RR_Rotate_180)) {
- f_scale_dx = width;
- scale_dx = F(width);
- } else {
- f_scale_dx = height;
- scale_dx = F(height);
- }
- }
- if (rotation & RR_Reflect_Y)
- {
- f_scale_y = -1;
- scale_y = F(-1);
- if (rotation & (RR_Rotate_0|RR_Rotate_180)) {
- f_scale_dy = height;
- scale_dy = F(height);
- } else {
- f_scale_dy = width;
- scale_dy = F(width);
- }
- }
-
- pixman_transform_scale (transform, &inverse, scale_x, scale_y);
- pixman_f_transform_scale (f_transform, f_inverse, f_scale_x, f_scale_y);
- pixman_transform_translate (transform, &inverse, scale_dx, scale_dy);
- pixman_f_transform_translate (f_transform, f_inverse, f_scale_dx, f_scale_dy);
+ pixman_transform_scale(transform, &inverse, scale_x, scale_y);
+ pixman_f_transform_scale(f_transform, f_inverse, f_scale_x, f_scale_y);
+ pixman_transform_translate(transform, &inverse, scale_dx, scale_dy);
+ pixman_f_transform_translate(f_transform, f_inverse, f_scale_dx,
+ f_scale_dy);
}
-
+
#ifdef RANDR_12_INTERFACE
- if (rr_transform)
- {
- if (!pixman_transform_multiply (transform, &rr_transform->transform, transform))
- overflow = TRUE;
- pixman_f_transform_multiply (f_transform, &rr_transform->f_transform, f_transform);
- pixman_f_transform_multiply (f_inverse, f_inverse, &rr_transform->f_inverse);
+ if (rr_transform) {
+ if (!pixman_transform_multiply
+ (transform, &rr_transform->transform, transform))
+ overflow = TRUE;
+ pixman_f_transform_multiply(f_transform, &rr_transform->f_transform,
+ f_transform);
+ pixman_f_transform_multiply(f_inverse, f_inverse,
+ &rr_transform->f_inverse);
}
#endif
/*
* Compute the class of the resulting transform
*/
- if (!overflow && pixman_transform_is_identity (transform))
- {
- pixman_transform_init_translate (transform, F ( x), F ( y));
+ if (!overflow && pixman_transform_is_identity(transform)) {
+ pixman_transform_init_translate(transform, F(x), F(y));
- pixman_f_transform_init_translate (f_transform, x, y);
- pixman_f_transform_init_translate (f_inverse, -x, -y);
- return FALSE;
+ pixman_f_transform_init_translate(f_transform, x, y);
+ pixman_f_transform_init_translate(f_inverse, -x, -y);
+ return FALSE;
}
- else
- {
- pixman_f_transform_translate (f_transform, f_inverse, x, y);
- if (!pixman_transform_translate (transform, &inverse, F(x), F(y)))
- overflow = TRUE;
- if (overflow)
- {
- struct pixman_f_transform f_scaled;
- f_scaled = *f_transform;
- RRTransformRescale(&f_scaled, 16384.0);
- pixman_transform_from_pixman_f_transform(transform, &f_scaled);
- }
- return TRUE;
+ else {
+ pixman_f_transform_translate(f_transform, f_inverse, x, y);
+ if (!pixman_transform_translate(transform, &inverse, F(x), F(y)))
+ overflow = TRUE;
+ if (overflow) {
+ struct pixman_f_transform f_scaled;
+
+ f_scaled = *f_transform;
+ RRTransformRescale(&f_scaled, 16384.0);
+ pixman_transform_from_pixman_f_transform(transform, &f_scaled);
+ }
+ return TRUE;
}
}