mirror of
https://github.com/game-stop/veejay.git
synced 2025-12-20 06:40:01 +01:00
Initial checkin of veejay 1.4
git-svn-id: svn://code.dyne.org/veejay/trunk@1172 eb8d1916-c9e9-0310-b8de-cf0c9472ead5
This commit is contained in:
Niels Elburg
145
veejay-current/veejay-server/libvje/effects/isolate.c
Normal file
145
veejay-current/veejay-server/libvje/effects/isolate.c
Normal file
@@ -0,0 +1,145 @@
|
||||
/*
|
||||
* Linux VeeJay
|
||||
*
|
||||
* Copyright(C)2004 Niels Elburg <elburg@hio.hen.nl>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License
|
||||
* as published by the Free Software Foundation; either version 2
|
||||
* of the License , or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 , USA.
|
||||
*/
|
||||
#include <stdint.h>
|
||||
#include <libvjmem/vjmem.h>
|
||||
#include <stdlib.h>
|
||||
#include <math.h>
|
||||
#include "common.h"
|
||||
#include "isolate.h"
|
||||
|
||||
vj_effect *isolate_init(int w, int h)
|
||||
{
|
||||
vj_effect *ve;
|
||||
ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
|
||||
ve->num_params = 5;
|
||||
ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
|
||||
ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
|
||||
ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* max */
|
||||
ve->defaults[0] = 300; /* angle */
|
||||
ve->defaults[1] = 255; /* r */
|
||||
ve->defaults[2] = 0; /* g */
|
||||
ve->defaults[3] = 0; /* b */
|
||||
ve->defaults[4] = 150; /* white transparency */
|
||||
ve->limits[0][0] = 5;
|
||||
ve->limits[1][0] = 900;
|
||||
|
||||
ve->limits[0][1] = 0;
|
||||
ve->limits[1][1] = 255;
|
||||
|
||||
ve->limits[0][2] = 0;
|
||||
ve->limits[1][2] = 255;
|
||||
|
||||
ve->limits[0][3] = 0;
|
||||
ve->limits[1][3] = 255;
|
||||
|
||||
ve->limits[0][4] = 0;
|
||||
ve->limits[1][4] = 255;
|
||||
ve->has_user = 0;
|
||||
ve->description = "Isolate Color";
|
||||
ve->extra_frame = 0;
|
||||
ve->sub_format = 1;
|
||||
ve->rgb_conv = 1;
|
||||
ve->param_description = vje_build_param_list( ve->num_params, "Angle","Red", "Green","Blue", "White");
|
||||
return ve;
|
||||
}
|
||||
|
||||
/* another key derivate */
|
||||
|
||||
void isolate_apply( VJFrame *frame, int width,
|
||||
int height, int i_angle, int r, int g,
|
||||
int b, int opacity)
|
||||
{
|
||||
|
||||
uint8_t *fg_y, *fg_cb, *fg_cr;
|
||||
uint8_t *bg_y, *bg_cb, *bg_cr;
|
||||
int accept_angle_tg, accept_angle_ctg, one_over_kc;
|
||||
int kfgy_scale, kg;
|
||||
int cb, cr;
|
||||
float kg1, tmp, aa = 128, bb = 128, _y = 0;
|
||||
float angle = (float) i_angle / 10.0;
|
||||
unsigned int pos;
|
||||
uint8_t val;
|
||||
unsigned int op1 = (opacity > 255) ? 255: opacity;
|
||||
unsigned int op0 = 255 - op1;
|
||||
|
||||
uint8_t *Y = frame->data[0];
|
||||
uint8_t *Cb = frame->data[1];
|
||||
uint8_t *Cr = frame->data[2];
|
||||
int iy,iu,iv;
|
||||
_rgb2yuv(r,g,b,iy,iu,iv);
|
||||
_y = (float) iy;
|
||||
aa = (float) iu;
|
||||
bb = (float) iv;
|
||||
tmp = sqrt(((aa * aa) + (bb * bb)));
|
||||
cb = 127 * (aa / tmp);
|
||||
cr = 127 * (bb / tmp);
|
||||
kg1 = tmp;
|
||||
/* obtain coordinate system for cb / cr */
|
||||
accept_angle_tg = 0xf * tan(M_PI * angle / 180.0);
|
||||
accept_angle_ctg = 0xf / tan(M_PI * angle / 180.0);
|
||||
|
||||
tmp = 1 / kg1;
|
||||
one_over_kc = 0xff * 2 * tmp - 0xff;
|
||||
kfgy_scale = 0xf * (float) (_y) / kg1;
|
||||
kg = kg1;
|
||||
|
||||
/* intialize pointers */
|
||||
fg_y = Y;
|
||||
fg_cb = Cb;
|
||||
fg_cr = Cr;
|
||||
|
||||
bg_y = Y;
|
||||
bg_cb = Cb;
|
||||
bg_cr = Cr;
|
||||
|
||||
for (pos = (width * height); pos != 0; pos--) {
|
||||
short xx, yy;
|
||||
xx = (((fg_cb[pos]) * cb) + ((fg_cr[pos]) * cr)) >> 7;
|
||||
if (xx < -128) {
|
||||
xx = -128;
|
||||
}
|
||||
if (xx > 127) {
|
||||
xx = 127;
|
||||
}
|
||||
yy = (((fg_cr[pos]) * cb) - ((fg_cb[pos]) * cr)) >> 7;
|
||||
if (yy < -128) {
|
||||
yy = -128;
|
||||
}
|
||||
if (yy > 127) {
|
||||
yy = 127;
|
||||
}
|
||||
val = (xx * accept_angle_tg) >> 4;
|
||||
if (val > 127)
|
||||
val = 127;
|
||||
|
||||
if (abs(yy) > val) {
|
||||
Y[pos]=235;
|
||||
Cb[pos]=128;
|
||||
Cr[pos]=128;
|
||||
}
|
||||
else {
|
||||
Y[pos] = (op0 * Y[pos] + (op1 * 235)) / 255;
|
||||
Cb[pos] = (op0 * Cb[pos] + (op1 * 128)) / 255;
|
||||
Cr[pos] = (op0 * Cr[pos] + (op1 * 128)) / 255;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void isolate_free(){}
|
||||
Reference in New Issue
Block a user