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add flash opacity fx

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veejay
2023-10-22 12:37:00 +02:00
parent 300f5379d4
commit 00d8b6a2c7
2 changed files with 193 additions and 0 deletions
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166
veejay-current/veejay-server/libvje/effects/flashopacity.c Normal file
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/*
* 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 "flashopacity.h"
#ifdef HAVE_ARM
#include <arm_neon.h>
#endif
vj_effect *flashopacity_init(int w, int h)
{
vj_effect *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->limits[0][0] = 1;
ve->limits[1][0] = 100;
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] = 500;
ve->limits[0][4] = 0;
ve->limits[1][4] = 1;
ve->defaults[0] = 5;
ve->defaults[1] = 100;
ve->defaults[2] = 255;
ve->defaults[3] = 10;
ve->defaults[4] = 0;
ve->description = "Flash Opacity";
ve->sub_format = -1;
ve->extra_frame = 1;
ve->parallel = 0;
ve->has_user = 0;
ve->param_description = vje_build_param_list( ve->num_params, "Exposure", "Start Opacity", "End Opacity" , "Interval", "Mode");
return ve;
}
#define TABLE_SIZE 256
typedef struct
{
int currentFrame;
int exposure;
float maxExposure;
float explut[TABLE_SIZE];
} flash_t;
void *flashopacity_malloc( int w, int h )
{
flash_t *f = (flash_t*) vj_malloc(sizeof(flash_t));
if(!f)
return NULL;
f->exposure = 0.0f;
f->currentFrame = 0;
f->maxExposure = 100.0f;
return (void*) f;
}
void flashopacity_free(void *ptr) {
flash_t *f = (flash_t*) ptr;
free(f);
}
void flashopacity_apply( void *ptr, VJFrame *frame, VJFrame *frame2, int *args )
{
flash_t *f = (flash_t*) ptr;
const int len = frame->len;
const int uv_len = frame->uv_len;
const float exposureValue = (float) args[0] / 100.0f;
const int opacityStart = args[1];
const int opacityEnd = args[2];
const int interval = args[3];
const int mode = args[4];
const int hInterval = interval / 2;
const int width = frame->width;
int currentFrame = f->currentFrame;
int i;
uint8_t *restrict Y = frame->data[0];
uint8_t *restrict U = frame->data[1];
uint8_t *restrict V = frame->data[2];
uint8_t *restrict Y2 = frame2->data[0];
uint8_t *restrict U2 = frame2->data[1];
uint8_t *restrict V2 = frame2->data[2];
if(f->maxExposure != exposureValue) {
int i;
for( i = 0; i < TABLE_SIZE; i ++ ) {
float exposureFactor = (float)i / (float)(TABLE_SIZE - 1) * exposureValue;
f->explut[i] = powf(2, exposureFactor);
}
f->maxExposure = exposureValue;
}
if( currentFrame < hInterval ) {
float exposureFactor = exposureValue * (currentFrame / (float)hInterval);
int index = (int)(exposureFactor / exposureValue * (TABLE_SIZE - 1));
float powValue = f->explut[index];
for (int i = 0; i < len; i++) {
Y[i] = (uint8_t)(Y[i] * powValue > 255 ? 255 : (Y[i] * powValue));
}
if (mode == 1) {
for (int i = 0; i < uv_len; i++) {
int distanceToInitialU = abs(U2[i] - U[i]);
int uValue = U[i] + (distanceToInitialU * currentFrame) / hInterval;
U[i] = (uValue > 128 ? 128 : uValue);
int distanceToInitialV = abs(V2[i] - V[i]);
int vValue = V[i] + (distanceToInitialV * currentFrame) / hInterval;
V[i] = (vValue > 128 ? 128 : vValue);
}
}
}
else if ( currentFrame >= hInterval && currentFrame < interval) {
int opacity = opacityStart + (currentFrame - hInterval) * (opacityEnd - opacityStart) / hInterval;
for (i = 0; i < len; i++)
{
Y[i] = (Y[i] * (0xff - opacity) + Y2[i] * opacity) / 0xff;
}
for( i = 0; i < uv_len; i ++ )
{
U[i] = (U[i] * (0xff - opacity) + U2[i] * opacity) / 0xff;
V[i] = (V[i] * (0xff - opacity) + V2[i] * opacity) / 0xff;
}
}
f->currentFrame = (f->currentFrame + 1) % interval;
}

27
veejay-current/veejay-server/libvje/effects/flashopacity.h Normal file
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/*
* 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 FLASHOPACITY_H
#define FLASHOPACITY_H
vj_effect *flashopacity_init(int w, int h);
void *flashopacity_malloc(int w, int h);
void flashopacity_free(void *ptr);
void flashopacity_apply( void *ptr, VJFrame *frame, VJFrame *frame2, int *args);
#endif