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geometrictransform: rename gemetric math functions to have their symbols namespaced

Browse source 
Otherwise those symbols can conflict with external libraries when
linking everything statically for mobile targets.

Use the gst_gm_ prefix, short for gst geometric math.

https://bugzilla.gnome.org/show_bug.cgi?id=756882
This commit is contained in:
George Kiagiadakis 2015-10-26 16:51:06 +01:00
parent c2f34b9814
commit f1ced59ccb
10 changed files with 34 additions and 34 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
gst/geometrictransform/geometricmath.c
View file

@ -54,7 +54,7 @@
#define B 0x100 #define B 0x100
#define BM 0xff #define BM 0xff
struct _Noise struct _GstGMNoise
{ {
gdouble p[2 * B + 2]; gdouble p[2 * B + 2];
gdouble g2[2 * B + 2][2]; gdouble g2[2 * B + 2][2];
@ -69,10 +69,10 @@ normalize_2 (gdouble * v)
v[1] = v[1] / s; v[1] = v[1] / s;
} }
Noise * GstGMNoise *
noise_new (void) gst_gm_noise_new (void)
{ {
Noise *noise = g_new0 (Noise, 1); GstGMNoise *noise = g_new0 (GstGMNoise, 1);
gint i, j, k; gint i, j, k;
for (i = 0; i < B; i++) { for (i = 0; i < B; i++) {
@ -102,7 +102,7 @@ noise_new (void)
} }
void void
noise_free (Noise * noise) gst_gm_noise_free (GstGMNoise * noise)
{ {
g_free (noise); g_free (noise);
} }
@ -120,7 +120,7 @@ lerp (gdouble t, gdouble a, gdouble b)
} }
gdouble gdouble
noise_2 (Noise * noise, gdouble x, gdouble y) gst_gm_noise_2 (GstGMNoise * noise, gdouble x, gdouble y)
{ {
gint bx0, bx1, by0, by1, b00, b10, b01, b11; gint bx0, bx1, by0, by1, b00, b10, b01, b11;
gdouble rx0, rx1, ry0, ry1, sx, sy, a, b, t, u, v; gdouble rx0, rx1, ry0, ry1, sx, sy, a, b, t, u, v;
@ -169,7 +169,7 @@ noise_2 (Noise * noise, gdouble x, gdouble y)
* This differs from the % operator with respect to negative numbers * This differs from the % operator with respect to negative numbers
*/ */
gdouble gdouble
mod_float (gdouble a, gdouble b) gst_gm_mod_float (gdouble a, gdouble b)
{ {
gint n = (gint) (a / b); gint n = (gint) (a / b);
@ -183,9 +183,9 @@ mod_float (gdouble a, gdouble b)
* Returns a repeating triangle shape in the range 0..1 with wavelength 1.0 * Returns a repeating triangle shape in the range 0..1 with wavelength 1.0
*/ */
gdouble gdouble
geometric_math_triangle (gdouble x) gst_gm_triangle (gdouble x)
{ {
gdouble r = mod_float (x, 1.0); gdouble r = gst_gm_mod_float (x, 1.0);
return 2.0 * (r < 0.5 ? r : 1 - r); return 2.0 * (r < 0.5 ? r : 1 - r);
} }
@ -194,7 +194,7 @@ geometric_math_triangle (gdouble x)
* Hermite interpolation * Hermite interpolation
*/ */
gdouble gdouble
smoothstep (gdouble edge0, gdouble edge1, gdouble x) gst_gm_smoothstep (gdouble edge0, gdouble edge1, gdouble x)
{ {
gdouble t = CLAMP ((x - edge0) / (edge1 - edge0), 0.0, 1.0); gdouble t = CLAMP ((x - edge0) / (edge1 - edge0), 0.0, 1.0);
return t * t * (3.0 - 2.0 * t); return t * t * (3.0 - 2.0 * t);

14
gst/geometrictransform/geometricmath.h
View file

@ -54,16 +54,16 @@
G_BEGIN_DECLS G_BEGIN_DECLS
typedef struct _Noise Noise; typedef struct _GstGMNoise GstGMNoise;
Noise * noise_new (void); GstGMNoise * gst_gm_noise_new (void);
void noise_free (Noise * noise); void gst_gm_noise_free (GstGMNoise * noise);
gdouble noise_2 (Noise * noise, gdouble x, gdouble y); gdouble gst_gm_noise_2 (GstGMNoise * noise, gdouble x, gdouble y);
gdouble mod_float (gdouble a, gdouble b); gdouble gst_gm_mod_float (gdouble a, gdouble b);
gdouble geometric_math_triangle (gdouble x); gdouble gst_gm_triangle (gdouble x);
gdouble smoothstep (gdouble edge0, gdouble edge1, gdouble x); gdouble gst_gm_smoothstep (gdouble edge0, gdouble edge1, gdouble x);
G_END_DECLS G_END_DECLS

4
gst/geometrictransform/gstbulge.c
View file

@ -140,8 +140,8 @@ bulge_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
* zoom is achieved dividing */ * zoom is achieved dividing */
scale = scale =
1.0 / (bulge->zoom + ((1.0 - bulge->zoom) * smoothstep (0, cgt->radius, 1.0 / (bulge->zoom + ((1.0 - bulge->zoom) * gst_gm_smoothstep (0,
r))); cgt->radius, r)));
norm_x *= scale; norm_x *= scale;
norm_y *= scale; norm_y *= scale;

2
gst/geometrictransform/gstcircle.c
View file

@ -158,7 +158,7 @@ circle_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
distance = sqrt (dx * dx + dy * dy); distance = sqrt (dx * dx + dy * dy);
theta = atan2 (-dy, -dx) + circle->angle; theta = atan2 (-dy, -dx) + circle->angle;
theta = mod_float (theta, 2 * G_PI); theta = gst_gm_mod_float (theta, 2 * G_PI);
*in_x = gt->width * theta / (circle->spread_angle + 0.0001); *in_x = gt->width * theta / (circle->spread_angle + 0.0001);
*in_y = *in_y =

4
gst/geometrictransform/gstgeometrictransform.c
View file

@ -181,8 +181,8 @@ gst_geometric_transform_do_map (GstGeometricTransform * gt, guint8 * in_data,
break; break;
case GST_GT_OFF_EDGES_PIXELS_WRAP: case GST_GT_OFF_EDGES_PIXELS_WRAP:
in_x = mod_float (in_x, gt->width); in_x = gst_gm_mod_float (in_x, gt->width);
in_y = mod_float (in_y, gt->height); in_y = gst_gm_mod_float (in_y, gt->height);
if (in_x < 0) if (in_x < 0)
in_x += gt->width; in_x += gt->width;
if (in_y < 0) if (in_y < 0)

4
gst/geometrictransform/gstkaleidoscope.c
View file

@ -158,12 +158,12 @@ kaleidoscope_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
distance = sqrt (dx * dx + dy * dy); distance = sqrt (dx * dx + dy * dy);
theta = atan2 (dy, dx) - kaleidoscope->angle - kaleidoscope->angle2; theta = atan2 (dy, dx) - kaleidoscope->angle - kaleidoscope->angle2;
theta = geometric_math_triangle (theta / G_PI * kaleidoscope->sides * 0.5); theta = gst_gm_triangle (theta / G_PI * kaleidoscope->sides * 0.5);
if (cgt->precalc_radius != 0) { if (cgt->precalc_radius != 0) {
gdouble radiusc = cgt->precalc_radius / cos (theta); gdouble radiusc = cgt->precalc_radius / cos (theta);
distance = radiusc * geometric_math_triangle (distance / radiusc); distance = radiusc * gst_gm_triangle (distance / radiusc);
} }
theta += kaleidoscope->angle; theta += kaleidoscope->angle;

6
gst/geometrictransform/gstmarble.c
View file

@ -158,7 +158,7 @@ gst_marble_finalize (GObject * obj)
{ {
GstMarble *marble = GST_MARBLE_CAST (obj); GstMarble *marble = GST_MARBLE_CAST (obj);
noise_free (marble->noise); gst_gm_noise_free (marble->noise);
g_free (marble->sin_table); g_free (marble->sin_table);
g_free (marble->cos_table); g_free (marble->cos_table);
@ -172,7 +172,7 @@ marble_prepare (GstGeometricTransform * trans)
gint i; gint i;
if (!marble->noise) { if (!marble->noise) {
marble->noise = noise_new (); marble->noise = gst_gm_noise_new ();
} }
g_free (marble->sin_table); g_free (marble->sin_table);
@ -197,7 +197,7 @@ marble_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
GstMarble *marble = GST_MARBLE_CAST (gt); GstMarble *marble = GST_MARBLE_CAST (gt);
gint displacement; gint displacement;
displacement = 127 * (1 + noise_2 (marble->noise, x / marble->xscale, displacement = 127 * (1 + gst_gm_noise_2 (marble->noise, x / marble->xscale,
y / marble->xscale)); y / marble->xscale));
displacement = CLAMP (displacement, 0, 255); displacement = CLAMP (displacement, 0, 255);

2
gst/geometrictransform/gstmarble.h
View file

@ -76,7 +76,7 @@ struct _GstMarble
gdouble turbulence; gdouble turbulence;
gdouble amount; gdouble amount;
Noise *noise; GstGMNoise *noise;
gdouble *sin_table; gdouble *sin_table;
gdouble *cos_table; gdouble *cos_table;
}; };

8
gst/geometrictransform/gstsquare.c
View file

@ -157,12 +157,12 @@ square_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
/* zoom at the center, smoothstep around half quadrant and get back to normal */ /* zoom at the center, smoothstep around half quadrant and get back to normal */
norm_x *= norm_x *=
(1.0 / square->zoom) * (1.0 + (square->zoom - (1.0 / square->zoom) * (1.0 + (square->zoom -
1.0) * smoothstep (square->width - 0.125, square->width + 0.125, 1.0) * gst_gm_smoothstep (square->width - 0.125,
ABS (norm_x))); square->width + 0.125, ABS (norm_x)));
norm_y *= norm_y *=
(1.0 / square->zoom) * (1.0 + (square->zoom - (1.0 / square->zoom) * (1.0 + (square->zoom -
1.0) * smoothstep (square->height - 0.125, square->height + 0.125, 1.0) * gst_gm_smoothstep (square->height - 0.125,
ABS (norm_y))); square->height + 0.125, ABS (norm_y)));
/* unnormalize */ /* unnormalize */
*in_x = 0.5 * (norm_x + 1.0) * width; *in_x = 0.5 * (norm_x + 1.0) * width;

4
gst/geometrictransform/gststretch.c
View file

@ -145,8 +145,8 @@ stretch_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
a = 1.0 + (MAX_SHRINK_AMOUNT - 1.0) * stretch->intensity; a = 1.0 + (MAX_SHRINK_AMOUNT - 1.0) * stretch->intensity;
b = a - 1.0; b = a - 1.0;
norm_x *= a - b * smoothstep (0.0, cgt->radius, r); norm_x *= a - b * gst_gm_smoothstep (0.0, cgt->radius, r);
norm_y *= a - b * smoothstep (0.0, cgt->radius, r); norm_y *= a - b * gst_gm_smoothstep (0.0, cgt->radius, r);
/* unnormalize */ /* unnormalize */
*in_x = (0.5 * norm_x + cgt->x_center) * width; *in_x = (0.5 * norm_x + cgt->x_center) * width;