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add cosmichue fx

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veejay
2023-10-23 19:40:04 +02:00
parent bdd7aebf7f
commit 773c61c18b
5 changed files with 149 additions and 1 deletions
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1
veejay-current/veejay-server/libvje/Makefile.am
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@@ -209,6 +209,7 @@ libvje_la_SOURCES = libvje.c vjert.c \
effects/camerabounce.c \
effects/flashopacity.c \
effects/colortemp.c \
effects/cosmichue.c \
effects/blackreplace.c

119
veejay-current/veejay-server/libvje/effects/cosmichue.c Normal file
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@@ -0,0 +1,119 @@
/*
* Linux VeeJay
*
* Copyright(C)2023 Niels Elburg <nwelburg@gmail.com>
*
* 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 "common.h"
#include <veejaycore/vjmem.h>
#include "cosmichue.h"
vj_effect *cosmichue_init(int w, int h)
{
vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
ve->num_params = 4;
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->limits[0][0] = 0;
ve->limits[1][0] = 2000;
ve->defaults[0] = 100;
ve->limits[0][1] = 0;
ve->limits[1][1] = 2000;
ve->defaults[1] = 100;
ve->limits[0][2] = 0;
ve->limits[1][2] = 255;
ve->defaults[2] = 100;
ve->limits[0][3] = 0;
ve->limits[1][3] = 3600;
ve->defaults[3] = 0;
ve->description = "Cosmic Hue";
ve->sub_format = 1;
ve->extra_frame = 0;
ve->parallel = 1;
ve->has_user = 0;
ve->param_description = vje_build_param_list( ve->num_params, "Amplitude", "Frequency", "Opacity", "Hue Shift" );
return ve;
}
void cosmichue_apply( void *ptr, VJFrame *frame, int *args ) {
const int opacity = args[2];
int i;
uint8_t *Y = frame->data[0];
uint8_t *U = frame->data[1];
uint8_t *V = frame->data[2];
const float amplitude = args[0] * 0.1f;
const float frequency = args[1] * 0.1f;
float hue_shift = args[3] * 0.1f;
float sin_lut[256];
float cos_lut[256];
float hsin_lut[256];
float hcos_lut[256];
float angle_step = (2*M_PI/256.0f);
hue_shift = hue_shift * (M_PI/180.0f);
hue_shift = fmod(hue_shift, 2 * M_PI);
if (hue_shift < 0) {
hue_shift += 2 * M_PI;
}
for (i = 0; i < 256; i ++ ) {
float luminance = i / 255.0f;
float angle = i * angle_step;
sin_lut[i] = amplitude * a_sin( frequency * luminance );
cos_lut[i] = amplitude * a_cos( frequency * luminance );
hsin_lut[i] = a_sin( angle );
hcos_lut[i] = a_cos( angle );
}
const int angle_index = (int)((hue_shift / (2 * M_PI)) * 256) % 256;
for (i = 0; i < frame->len; i++) {
int u = U[i] - 128;
int v = V[i] - 128;
float u_offset = sin_lut[ Y[i] ];
float v_offset = cos_lut[ Y[i] ];
u = (int)(u_offset + u);
v = (int)(v_offset + v);
float cos_val = hcos_lut[angle_index];
float sin_val = hsin_lut[angle_index];
int u_rotated = 128 + (int)(u * cos_val - v * sin_val);
int v_rotated = 128 + (int)(u * sin_val + v * cos_val);
u_rotated = (u_rotated + (u_rotated >> 31)) ^ (u_rotated >> 31);
v_rotated = (v_rotated + (v_rotated >> 31)) ^ (v_rotated >> 31);
U[i] = (uint8_t)((opacity * u_rotated + (0xff - opacity) * U[i]) >> 8);
V[i] = (uint8_t)((opacity * v_rotated + (0xff - opacity) * V[i]) >> 8);
}
}

25
veejay-current/veejay-server/libvje/effects/cosmichue.h Normal file
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@@ -0,0 +1,25 @@
/*
* Linux VeeJay
*
* Copyright(C)2023 Niels Elburg <nwelburg@gmail.com>
*
* 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.
*/
#ifndef COSMICHUE_H
#define COSMICHUE_H
vj_effect *cosmichue_init(int w, int h);
void cosmichue_apply(void *ptr, VJFrame *frame, int *args);
#endif

4
veejay-current/veejay-server/libvje/internal.h
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@@ -220,8 +220,9 @@
#include "./effects/camerabounce.h"
#include "./effects/flashopacity.h"
#include "./effects/colortemp.h"
#include "./effects/cosmichue.h"
#define VJ_IMAGE_EFFECT_MIN 68
#define VJ_IMAGE_EFFECT_MIN 67
#define VJ_IMAGE_EFFECT_MAX 199
#define VJ_VIDEO_EFFECT_MIN 200
@@ -475,6 +476,7 @@ enum {
VJ_IMAGE_EFFECT_LUMINOUSWAVE = 70,
VJ_IMAGE_EFFECT_CAMERABOUNCE = 69,
VJ_IMAGE_EFFECT_COLORTEMP = 68,
VJ_IMAGE_EFFECT_COSMICHUE = 67,
VJ_IMAGE_EFFECT_DUMMY=0,
};

1
veejay-current/veejay-server/libvje/libvje.c
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@@ -138,6 +138,7 @@ static struct {
{ neighbours5_init,neighbours5_malloc,neighbours5_free,NULL,NULL,neighbours5_apply,NULL,NULL,NULL,NULL, VJ_IMAGE_EFFECT_NEIGHBOUR5 },
{ negation_init,NULL,NULL,NULL,NULL,negation_apply,NULL,NULL,NULL,NULL,VJ_IMAGE_EFFECT_NEGATION },
{ colortemp_init,NULL,NULL,NULL,NULL,colortemp_apply,NULL,NULL,NULL,NULL,VJ_IMAGE_EFFECT_COLORTEMP },
{ cosmichue_init,NULL,NULL,NULL,NULL,cosmichue_apply,NULL,NULL,NULL,NULL,VJ_IMAGE_EFFECT_COSMICHUE },
{ rainbowshift_init, NULL,NULL,NULL,NULL, rainbowshift_apply,NULL,NULL,NULL,NULL, VJ_IMAGE_EFFECT_RAINBOWSHIFT },
{ vintagefilm_init,NULL,NULL,NULL,NULL, vintagefilm_apply,NULL,NULL,NULL,NULL, VJ_IMAGE_EFFECT_VINTAGEFILM },
{ mirrordistortion_init,mirrordistortion_malloc,mirrordistortion_free,NULL,NULL,mirrordistortion_apply,NULL,NULL,NULL,NULL,VJ_IMAGE_EFFECT_MIRRORDISTORTION },