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veejay/veejay-current/veejay-server/libvje/effects/chromamagick.c
c0ntrol 95535ce8a8 #183 refactor libvje
2019-09-08 15:08:29 +02:00

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/*
* VeeJay
*
* Copyright(C)2002 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.
*/
/* Note that the 'opacity' parameter is sometimes used as a
threshold value or substraction value depending on the mode
of this effect */
#include "common.h"
#include <veejaycore/vjmem.h>
#include "chromamagick.h"
vj_effect *chromamagick_init(int w, int h)
{
vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
ve->num_params = 2;
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] = 7;
ve->defaults[1] = 150;
ve->parallel = 1;
ve->description = "Chroma Magic";
ve->limits[0][0] = 0;
ve->limits[1][0] = 26;
ve->limits[0][1] = 0;
ve->limits[1][1] = 255;
ve->parallel = 1;
ve->extra_frame = 1;
ve->sub_format = 1;
ve->has_user = 0;
ve->param_description = vje_build_param_list( ve->num_params, "Mode", "Value" );
ve->hints = vje_init_value_hint_list( ve->num_params );
vje_build_value_hint_list( ve->hints, ve->limits[1][0], 0,
"Add Subselect Luma", "Select Min", "Select Max", "Select Difference",
"Select Difference Negate", "Add Luma", "Select Unfreeze", "Exclusive",
"Difference Negate", "Additive", "Basecolor", "Freeze", "Unfreeze",
"Hardlight", "Multiply", "Divide", "Subtract", "Add", "Screen",
"Difference", "Softlight", "Dodge", "Reflect", "Difference Replace",
"Darken", "Lighten", "Modulo Add"
);
return ve;
}
static void chromamagic_selectmin(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a, b;
const int op_b = 255 - op_a;
for (i = 0; i < len; i++) {
a = (Y[i] * op_a) >> 8;
b = (Y2[i] * op_b) >> 8;
if (b < a) {
Y[i] = b;
Cb[i] = Cb2[i];
Cr[i] = Cr2[i];
}
}
}
static void chromamagic_addsubselectlum(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
int c, a, b;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
const int op_b = 255 - op_a;
for (i = 0; i < len; i++) {
a = (Y[i] * op_a) >> 8;
b = (Y2[i] * op_b) >> 8;
if (b < a) {
c = (a + b) >> 1;
Y[i] = c;
a = Cb[i];
b = Cb2[i];
c = (a + b) >> 1;
Cb[i] = c;
a = Cr[i];
b = Cr2[i];
c = (a + b) >> 1;
Cr[i] = c;
}
}
}
static void chromamagic_selectmax(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a, b;
const int op_b = 255 - op_a;
for (i = 0; i < len; i++) {
a = (Y[i] * op_a) >> 8;
b = (Y2[i] * op_b) >> 8;
if (b > a) {
Y[i] = (3 * b + a)>>2;
Cb[i] = Cb2[i];
Cr[i] = Cr2[i];
}
}
}
static void chromamagic_selectdiff(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a, b;
int op_b = 255 - op_a;
for (i = 0; i < len; i++) {
a = (Y[i] * op_a) >> 8;
b = (Y2[i] * op_b) >> 8;
if (a > b) {
Y[i] = abs(Y[i] - Y2[i]);
Cb[i] = (Cb[i] + Cb2[i]) >> 1;
Cr[i] = (Cr[i] + Cr2[i]) >> 1;
}
}
}
static void chromamagic_diffreplace(VJFrame *frame, VJFrame *frame2, int threshold)
{
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
unsigned int i ;
int op_b ;
int op_a ;
int a,b;
unsigned long sum = 0;
for(i=0; i < len; i++)
{
sum += Y[i];
}
op_b = (sum & 0xff);
op_a = 255 - op_b;
for(i=0; i < len; i++)
{
if( abs(Y[i] - Y2[i]) >= threshold )
{
a = ( Y[i] * op_a );
b = ( Y2[i] * op_b );
Y[i] = (a + b) >> 8;
a = ( Cb[i] * op_a );
b = ( Cb2[i] * op_b );
Cb[i] = (a + b) >> 8;
a = ( Cr[i] * op_a );
b = ( Cr2[i] * op_b );
Cr[i] = (a + b) >> 8;
}
}
}
static void chromamagic_selectdiffneg(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a, b;
const int op_b = 255 - op_a;
for (i = 0; i < len; i++) {
a = (Y[i] * op_a) >> 8;
b = (Y2[i] * op_b) >> 8;
if (a > b) {
Y[i] = 255 - abs(255 - a - b);
Cb[i] = ((Cb[i] * op_a) + (Cb2[i]*op_b) )>>8;
Cr[i] = ((Cr[i] * op_a) + (Cr2[i]*op_b) )>>8;
}
}
}
static void chromamagic_selectunfreeze(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a, b;
const int op_b = 255 - op_a;
for (i = 0; i < len; i++) {
a = (Y[i] * op_a) >> 8;
b = (Y2[i] * op_b) >> 8;
if (a > b) {
if (a > pixel_Y_lo_)
Y[i] = 255 - ((256 - b) * (256 - b)) / a;
Cb[i] = (Cb[i] + Cb2[i]) >> 1;
Cr[i] = (Cr[i] + Cr2[i]) >> 1;
}
}
}
static void chromamagic_addlum(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a, b;
const int op_b = 255 - op_a;
for (i = 0; i < len; i++) {
a = (Y[i] * op_a) >> 8;
b = (Y2[i] * op_b) >> 8;
Y[i] = (a * a) / (256- b);
Cb[i] = (Cb[i] + Cb2[i]) >> 1;
Cr[i] = (Cr[i] + Cr2[i]) >> 1;
}
}
static void chromamagic_exclusive(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a=0, b=0, c=0;
for (i = 0; i < len; i++) {
a = Y[i];
b = Y2[i];
c = a + (2 * b) - op_a;
Y[i] = CLAMP_Y(c - (( a * b ) >> 8 ));
}
for( i = 0; i < len ; i ++ ) {
a = Cb[i];
b = Cb2[i];
c = a + (2 * b);
Cb[i] = CLAMP_UV(c - 0xff);
a = Cr[i];
b = Cr2[i];
c = a + (2 * b);
Cr[i] = CLAMP_UV(c - 0xff);
}
}
static void chromamagic_diffnegate(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b,d;
const unsigned int o1 = op_a;
const unsigned int o2 = 255 - o1;
#define MAGIC_THRESHOLD 40
for(i=0; i < len; i++) {
a = Y[i];
b = Y2[i];
d = abs( a - b );
if ( d > MAGIC_THRESHOLD )
{
a = Y[i] * o1;
b = Cb2[i] * o2;
Y[i] = 255 - ( (a + b) >>8 );
a = (Cb[i]-128) * o1;
b = (Cb2[i]-128) * o2;
Cb[i] = 255 - ( 128 + (( a + b ) >> 8 ));
a = (Cr[i]-128) * o1;
b = (Cr2[i]-128) * o2;
Cr[i] = 255 - ( 128 + (( a + b ) >> 8 ));
}
}
}
static void chromamagic_additive(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b;
const unsigned int o1 = op_a;
const unsigned int o2 = 255 - op_a;
for(i=0; i < len; i++) {
a = (Y[i]*o1) >> 7;
b = (Y2[i]*o2) >> 7;
Y[i] = a + (( 2 * b ) - 255);
a = Cb[i];
b = Cb2[i];
Cb[i] = a + ( ( 2 * b ) - 255 );
a = Cr[i] ;
b = Cr2[i] ;
Cr[i] = a + ( ( 2 * b ) - 255 );
}
}
static void chromamagic_basecolor(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a, b, c, d;
const unsigned int o1 = op_a;
for (i = 0; i < len; i++) {
a = o1 - Y[i];
b = o1 - Y2[i];
c = a * b >> 8;
Y[i] = c + a * ((255 - (((255 - a) * (255 - b)) >> 8) - c) >> 8); //8
a = Cb[i]-128;
b = Cb2[i]-128;
c = a * b >> 8;
d = c + a * ((255 - (((255-a) * (255-b)) >> 8) -c) >> 8);
d += 128;
Cb[i] = CLAMP_UV(d);
a = Cr[i]-128;
b = Cr2[i]-128;
c = a * b >> 8;
d = c + a * ((255 - (((255-a) * (255-b)) >> 8) -c ) >> 8);
d += 128;
Cr[i] = CLAMP_UV(d);
}
}
static void chromamagic_freeze(VJFrame *frame, VJFrame *frame2, int op_a) {
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
unsigned int i;
int a,b,c;
if(op_a==0) op_a = 255;
for(i=0; i < len; i++) {
a = Y[i];
b = Y2[i];
if( b > 0 )
c = 255 - ((op_a -a ) * (op_a - a)) / b;
else
c = 255 - a;
Y[i] = CLAMP_Y(c);
a = Cb[i];
b = Cb2[i];
if(b > 0)
c = 255 - ((256-a) * (256 - a)) / b;
else
c = 255 - a;
Cb[i] = CLAMP_UV(c);
a = Cr[i];
b = Cr2[i];
if(b > 0)
c = 255 - (( 256 - a ) * ( 256 - a )) / b;
else
c= 255 -a;
Cr[i] = CLAMP_UV(c);
}
}
static void chromamagic_unfreeze( VJFrame *frame, VJFrame *frame2, int op_a ) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b;
for(i=0; i < len; i++) {
a = Y[i];
b = Y2[i];
if( a > pixel_Y_lo_ )
Y[i] = 255 - (( op_a - b) * (op_a - b)) / a;
a = Cb[i];
b = Cb2[i];
if( a > pixel_U_lo_ )
Cb[i] = 255 - (( 256 - b) * ( 256 - b )) / a;
a = Cr[i];
b = Cr2[i];
if( a > pixel_U_lo_ )
Cr[i] = 255 - ((256 -b ) * (256 - b)) /a ;
}
}
static void chromamagic_hardlight( VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b,c;
for(i=0; i < len; i++) {
a = Y[i];
b = Y2[i];
if ( b < 128 ) {
c = ( a * b ) >> 8;
}
else {
c = 255 - (( op_a - b) * ( op_a - a ) >> 8);
}
Y[i] =CLAMP_Y( c);
a = Cb[i]-128;
b = Cb2[i]-128;
if ( b < 128 ) c = ( a * b ) >> 8;
else c = 255 - (( 256 - b) * ( 256 - a) >> 8);
c += 128;
Cb[i] = CLAMP_UV(c);
a = Cr[i]-128;
b = Cr2[i]-128;
if ( b < 128) c = ( a * b ) >> 8;
else c = 255 - (( 256 - b) * ( 256 - a) >> 8 );
c += 128;
Cr[i] = CLAMP_UV(c);
}
}
static void chromamagic_multiply( VJFrame *frame, VJFrame *frame2, int op_a ) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b,c;
const unsigned int o1 = op_a;
const unsigned int o2 = 255 - op_a;
for( i=0; i < len; i++) {
a = (Y[i] * o1) >> 8;
b = (Y2[i] * o2) >> 8;
Y[i] = (a * b) >> 8;
a = Cb[i]-128;
b = Cb2[i]-128;
c = ( a * b ) >> 8;
c += 128;
Cb[i] = CLAMP_UV(c);
a = Cr[i] - 128;
b = Cr2[i] - 128;
c = ( a * b ) >> 8;
c += 128;
Cr[i] = CLAMP_UV(c);
}
}
static void chromamagic_divide(VJFrame *frame, VJFrame *frame2, int op_a ) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b;
const unsigned int o1 = op_a;
for(i=0; i < len; i++) {
a = Y[i] * Y[i];
b = o1 - Y2[i];
if ( b > pixel_Y_lo_ )
Y[i] = a / b;
a = Cb[i] * Cb2[i];
b = 255 - Cb2[i];
if( b > pixel_U_lo_ )
Cb[i] = a / b;
a = Cr[i] * Cr[i];;
b = 255 - Cr2[i];
if( b > pixel_U_lo_ )
Cr[i] = ( a / b );
}
}
static void chromamagic_substract(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a ,b;
const unsigned int o1 = op_a;
const unsigned int o2 = 255 - op_a;
for( i=0; i < len; i++ )
{
a = Y[i];
b = Y2[i];
Y[i] = a - ((b * o1) >> 8);
a = Cb[i];
b = Cb2[i];
Cb[i] = (((a * o2) + (b * o1))>>8);
a = Cr[i];
b = Cr2[i];
Cr[i] = (((a * o2) + (b * o1)) >> 8);
}
}
static void chromamagic_add(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b,c;
for(i=0; i < len; i++) {
a = Y[i];
b = Y2[i];
Y[i] = a + (( 2 * b ) - op_a);
a = Cb[i]-128;
b = Cb2[i]-128;
c = a + ( 2 * b );
c += 128;
Cb[i] = CLAMP_UV(c);
a = Cr[i]-128;
b = Cr2[i]-128;
c = a + ( 2 * b );
c += 128;
Cr[i] = CLAMP_UV(c);
}
}
static void chromamagic_screen(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b,c;
for(i=0; i < len; i++) {
a = Y[i];
b = Y2[i];
Y[i] = 255 - ( (op_a-a) * (op_a-b) >> 8);
a = Cb[i]-128;
b = Cb2[i]-128;
c = 255 - ( ( 256-a) * (256 - b) >> 8);
c += 128;
Cb[i] = CLAMP_UV(c);
a = Cr[i]-128;
b = Cr2[i]-128;
c = 255 - ( ( 256 -a) * (256 - b)>>8);
c += 128;
Cr[i] = CLAMP_UV(c);
}
}
static void chromamagic_difference(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
const unsigned int o1 = op_a;
const unsigned int o2 = 255 - op_a;
int a,b,c;
for(i=0; i < len; i++) {
a = (Y[i] * o1)>>7;
b = (Y2[i] * o2)>>7;
Y[i] = abs ( a - b );
a = (Cb[i]-128);
b = (Cb2[i]-128);
c = abs ( a - b );
c += 128;
Cb[i] = CLAMP_UV(c);
a = (Cr[i]-128);
b = (Cr2[i]-128);
c = abs( a - b );
c += 128;
Cr[i] = CLAMP_UV(c);
}
}
/* not really softlight but still cool */
static void chromamagic_softlightmode(VJFrame *frame,VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b,c,d;
for(i=0; i < len; i++) {
a = Y[i];
b = Y2[i];
if ( a < op_a ) {
c = (a * b) >> 8;
Y[i] = (c + a * ( 255 - ( (255-a)*(255-b) >> 8) - c)) >> 8;
a = abs(Cb[i]-128);
b = abs(Cb2[i]-128);
c = (a * b);
d = (c + a * ( 255 - ( (a * b) >> 7) - c)) >> 7;
d += 128;
Cb[i] = CLAMP_UV(d);
a = abs(Cr[i]-128);
b = abs(Cr2[i]-128);
c = (a * b) >> 7;
d = (c + a * ( 255 - ( (a * b) >> 7) -c)) >> 7;
d += 128;
Cr[i] = CLAMP_UV(d);
}
}
}
static void chromamagic_dodge(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b,c;
for(i=0; i < len; i++) {
a = Y[i];
b = Y2[i];
if( a >= op_a) c = a;
else {
Y[i] = (a << 8) / ( 256 - b );
a = Cb[i] - 128;
b = Cb2[i] - 128;
if ( b > 127 ) b = 127;
c = ( a << 7 ) / ( 128 - b );
c += 128;
Cb[i] = CLAMP_UV(c);
a = Cr[i] - 128;
b = Cr2[i] - 128;
if ( b > 127 ) b = 127;
c = ( a << 7 ) / ( 128 - b);
c += 128;
Cr[i] = CLAMP_UV(c);
}
}
}
static void chromamagic_darken(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
const unsigned int o1 = op_a;
const unsigned int o2 = 255 - op_a;
for(i=0; i < len; i++)
{
if(Y[i] > Y2[i])
{
Y[i] = ((Y[i] * o1) + (Y2[i] * o2)) >> 8;
Cb[i] = ((Cb[i] * o1) + (Cb2[i] * o2)) >> 8;
Cr[i] = ((Cr[i] * o1) + (Cr2[i] * o2)) >> 8;
}
}
}
static void chromamagic_lighten(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
const unsigned int o1 = op_a;
const unsigned int o2 = 255 - op_a;
for(i=0; i < len; i++)
{
if(Y[i] < Y2[i])
{
Y[i] = ((Y[i] * o1) + (Y2[i] * o2)) >> 8;
Cb[i] = ((Cb[i] * o1) + (Cb2[i] * o2)) >> 8;
Cr[i] = ((Cr[i] * o1) + (Cr2[i] * o2)) >> 8;
}
}
}
static void chromamagic_reflect(VJFrame *frame, VJFrame *frame2, int op_a) {
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a,b,c;
for(i=0; i < len ; i++) {
a = Y[i];
b = Y2[i];
if ( b > op_a ) c = b;
else {
Y[i] = (a * a) / ( 256 - b );
a = Cb[i];
b = Cb2[i];
a -= 128;
b -= 128;
if ( b == 128 ) b = 127;
c = ( a * a ) / ( 128 - b);
c += 128;
Cb[i] = CLAMP_UV(c);
a = Cr[i];
b = Cr2[i];
a -= 128;
b -= 128;
if ( b == 128) b = 127;
c = ( a * a ) / ( 128 - b);
c += 128;
Cr[i] = CLAMP_UV(c);
}
}
}
static void chromamagic_modadd(VJFrame *frame, VJFrame *frame2, int op_a)
{
unsigned int i;
const int len = frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb = frame->data[1];
uint8_t *Cr = frame->data[2];
uint8_t *Y2 = frame2->data[0];
uint8_t *Cb2 = frame2->data[1];
uint8_t *Cr2 = frame2->data[2];
int a, b;
const int op_b = 255 - op_a;
for (i = 0; i < len; i++)
{
a = (Y[i] * op_a) >> 8;
b = (Y2[i] * op_b) >> 8;
Y[i] = (a + ( 2 * b - 128)) & 255;
a = (Cb[i] * op_a) >> 8;
b = (Cb2[i] * op_b ) >> 8;
Cb[i] = (a + ( 2 * b )) & 255;
a = (Cr[i] * op_a ) >> 8;
b = (Cr2[i] * op_b ) >> 8;
Cr[i] = (a + ( 2 * b ) ) & 255;
}
}
void chromamagick_apply(void *ptr, VJFrame *frame, VJFrame *frame2, int *args) {
int type = args[0];
int op_a = args[1];
switch (type) {
case 0:
chromamagic_addsubselectlum(frame, frame2, op_a);
break;
case 1:
chromamagic_selectmin(frame, frame2, op_a);
break;
case 2:
chromamagic_selectmax(frame, frame2, op_a);
break;
case 3:
chromamagic_selectdiff(frame, frame2, op_a);
break;
case 4:
chromamagic_selectdiffneg(frame, frame2, op_a);
break;
case 5:
chromamagic_addlum(frame, frame2, op_a);
break;
case 6:
chromamagic_selectunfreeze(frame, frame2, op_a);
break;
case 7:
chromamagic_exclusive(frame,frame2, op_a);
break;
case 8:
chromamagic_diffnegate(frame,frame2, op_a);
break;
case 9:
chromamagic_additive( frame,frame2, op_a);
break;
case 10:
chromamagic_basecolor(frame,frame2, op_a);
break;
case 11:
chromamagic_freeze(frame,frame2, op_a);
break;
case 12:
chromamagic_unfreeze(frame,frame2, op_a);
break;
case 13:
chromamagic_hardlight(frame,frame2, op_a);
break;
case 14:
chromamagic_multiply(frame,frame2, op_a);
break;
case 15:
chromamagic_divide(frame,frame2, op_a);
break;
case 16:
chromamagic_substract(frame,frame2, op_a);
break;
case 17:
chromamagic_add(frame,frame2, op_a);
break;
case 18:
chromamagic_screen(frame,frame2, op_a);
break;
case 19:
chromamagic_difference(frame,frame2, op_a);
break;
case 20:
chromamagic_softlightmode(frame,frame2, op_a);
break;
case 21:
chromamagic_dodge(frame,frame2, op_a);
break;
case 22:
chromamagic_reflect(frame,frame2, op_a);
break;
case 23:
chromamagic_diffreplace(frame,frame2, op_a);
break;
case 24:
chromamagic_darken( frame,frame2, op_a);
break;
case 25:
chromamagic_lighten( frame,frame2, op_a);
break;
case 26:
chromamagic_modadd( frame,frame2, op_a);
break;
}
}
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