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-rw-r--r--Plugins/rene.c245
1 files changed, 245 insertions, 0 deletions
diff --git a/Plugins/rene.c b/Plugins/rene.c
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+++ b/Plugins/rene.c
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+// 242.rene -- does 3-source chroma keying with transparency.
+// by r. luke dubois (luke@music.columbia.edu),
+// computer music center, columbia university, 2001.
+// for rene beekman.
+//
+// Pd / Framestein port by Olaf Matthes <olaf.matthes@gmx.de>, June 2002
+//
+// objects and source are provided without warranty of any kind, express or implied.
+//
+// usage: rene <red> <green> <blue> <fuzzi red> <fuzzi green> <fuzzi blue> <redfloor> <greenfloor> <bluefloor>
+//
+// f1 is the key & target, f2 is the mask
+//
+
+#include <stdio.h>
+#include <string.h>
+#include "plugin.h"
+
+void perform_effect(struct frame f, struct args a)
+{
+ printf("Using keyscreen as effect does nothing!\n");
+}
+
+void perform_copy(struct frame f1, struct frame f2, struct args a)
+{
+ short x, y, w, h;
+ pixel16 *pix1_16, *pix2_16;
+ pixel24 *pix1_24, *pix2_24;
+ pixel32 *pix1_32, *pix2_32;
+ byte redpix, greenpix, bluepix, rkeyed, gkeyed, bkeyed;
+ byte red, green, blue, check, rf, gf, bf, rfl, gfl, bfl;
+ float lum, keylum, lowfuzz, highfuzz, lowfloor, highfloor, coeff;
+ char *t;
+
+ w = f1.width<f2.width ? f1.width : f2.width;
+ h = f1.height<f2.height ? f1.height : f2.height;
+
+ // get params
+ if(!a.s) return;
+ red = atoi(a.s);
+ if(!(t = strstr(a.s, " "))) return;
+ green = atoi(t+1);
+ if(!(t = strstr(t+1, " "))) return;
+ blue = atoi(t+1);
+ if(!(t = strstr(t+1, " "))) return;
+ rf = atoi(t+1);
+ if(!(t = strstr(t+1, " "))) return;
+ gf = atoi(t+1);
+ if(!(t = strstr(t+1, " "))) return;
+ bf = atoi(t+1);
+ if(!(t = strstr(t+1, " "))) return;
+ rfl = atoi(t+1);
+ if(!(t = strstr(t+1, " "))) return;
+ gfl = atoi(t+1);
+ if(!(t = strstr(t+1, " "))) return;
+ bfl = atoi(t+1);
+
+ printf("rene: r%d g%d b%d rg%d gf%d bf%d rfl%d gfl%d bfl%d\n",
+ red, green, blue, rf, gf, bf, rfl, gfl, bfl);
+
+ // key all channels simultaneously
+ switch(f1.pixelformat)
+ {
+ case 16:
+ for(y = 0; y < h; y++)
+ {
+ pix1_16 = scanline16(f1, y);
+ pix2_16 = scanline16(f2, y);
+ for(x = 0; x < w; x++)
+ {
+ check = 0; // start with each pixel anew
+
+ redpix = r16(pix2_16[x]);
+ greenpix = g16(pix2_16[x]);
+ bluepix = b16(pix2_16[x]);
+ if ((redpix>=(red-rf))&&(redpix<=(red+rf))&&(greenpix>=(green-gf))&&(greenpix<=(green+gf))&&(bluepix>=(blue-bf))&&(bluepix<=(blue+bf)))
+ {
+ check = 1; // mask it
+ }
+ if ((redpix<(red-rfl))||(redpix>(red+rfl))&&(greenpix<(green-gfl))||(greenpix>(green+gfl))&&(bluepix<(blue-bfl))||(bluepix>(blue+bfl)))
+ {
+ check = 2; // target it
+ }
+
+ if (!check)
+ {
+ lum = (redpix + greenpix + bluepix) / 3.0;
+ keylum = (red + blue + green) / 3.0;
+ lowfuzz = (rf + gf + bf) / 3.0;
+ if (lowfuzz < 0.0) lowfuzz = 0.0;
+ highfuzz = (rf + gf + bf) / 3.0;
+ if (highfuzz > 1.0) highfuzz = 1.0;
+ lowfloor = keylum - ((rfl + gfl + bfl) / 3.0);
+ if (lowfloor < 0.0) lowfloor = 0.;
+ highfloor = keylum + (rfl + gfl + bfl) / 3.0;
+ if (highfloor > 1.0) highfloor = 1.0;
+ if (lum < keylum)
+ {
+ coeff = ((lum - lowfloor) / (keylum - lowfuzz));
+ }
+ if (lum >= keylum)
+ {
+ coeff = ((255 - lum - highfloor) / (255 - keylum - highfuzz));
+ }
+
+ rkeyed = ((float)r16(pix2_16[x]) * coeff) + ((float)r16(pix1_16[x]) * (1.0 - coeff));
+ gkeyed = ((float)g16(pix2_16[x]) * coeff) + ((float)g16(pix1_16[x]) * (1.0 - coeff));
+ bkeyed = ((float)b16(pix2_16[x]) * coeff) + ((float)b16(pix1_16[x]) * (1.0 - coeff));
+
+ pix2_16[x] = rgbtocolor16(rkeyed, gkeyed, bkeyed);
+ }
+
+ if (check==1)
+ { // was pix3
+ // pix2_16[x] = rgbtocolor16(r16(pix2_16[x]), g16(pix2_16[x]), b16(pix2_16[x]));
+ }
+ if (check==2)
+ { // was pix2
+ pix2_16[x] = rgbtocolor16(r16(pix1_16[x]), g16(pix1_16[x]), b16(pix1_16[x]));
+ }
+ }
+ }
+ break;
+ case 24:
+ for(y = 0; y < h; y++)
+ {
+ pix1_24 = scanline24(f1, y);
+ pix2_24 = scanline24(f2, y);
+ for(x = 0; x < w; x++)
+ {
+ check = 0; // start with each pixel anew
+
+ redpix = r24(pix2_24[x]);
+ greenpix = g24(pix2_24[x]);
+ bluepix = b24(pix2_24[x]);
+ if ((redpix>=(red-rf))&&(redpix<=(red+rf))&&(greenpix>=(green-gf))&&(greenpix<=(green+gf))&&(bluepix>=(blue-bf))&&(bluepix<=(blue+bf)))
+ {
+ check = 1; // mask it
+ }
+ if ((redpix<(red-rfl))||(redpix>(red+rfl))&&(greenpix<(green-gfl))||(greenpix>(green+gfl))&&(bluepix<(blue-bfl))||(bluepix>(blue+bfl)))
+ {
+ check = 2; // target it
+ }
+
+ if (!check)
+ {
+ lum = (redpix + greenpix + bluepix) / 3.0;
+ keylum = (red + blue + green) / 3.0;
+ lowfuzz = (rf + gf + bf) / 3.0;
+ if (lowfuzz < 0.0) lowfuzz = 0.0;
+ highfuzz = (rf + gf + bf) / 3.0;
+ if (highfuzz > 1.0) highfuzz = 1.0;
+ lowfloor = keylum - ((rfl + gfl + bfl) / 3.0);
+ if (lowfloor < 0.0) lowfloor = 0.;
+ highfloor = keylum + (rfl + gfl + bfl) / 3.0;
+ if (highfloor > 1.0) highfloor = 1.0;
+ if (lum < keylum)
+ {
+ coeff = ((lum - lowfloor) / (keylum - lowfuzz));
+ }
+ if (lum >= keylum)
+ {
+ coeff = ((255 - lum - highfloor) / (255 - keylum - highfuzz));
+ }
+
+ rkeyed = ((float)r24(pix2_24[x]) * coeff) + ((float)r24(pix1_24[x]) * (1.0 - coeff));
+ gkeyed = ((float)g24(pix2_24[x]) * coeff) + ((float)g24(pix1_24[x]) * (1.0 - coeff));
+ bkeyed = ((float)b24(pix2_24[x]) * coeff) + ((float)b24(pix1_24[x]) * (1.0 - coeff));
+
+ pix2_24[x] = rgbtocolor24(rkeyed, gkeyed, bkeyed);
+ }
+
+ if (check==1)
+ { // was pix3
+ // pix2_24[x] = rgbtocolor24(r24(pix2_24[x]), g24(pix2_24[x]), b24(pix2_24[x]));
+ }
+ if (check==2)
+ { // was pix2
+ pix2_24[x] = rgbtocolor24(r24(pix1_24[x]), g24(pix1_24[x]), b24(pix1_24[x]));
+ }
+ }
+ }
+ break;
+ case 32:
+ for(y = 0; y < h; y++)
+ {
+ pix1_32 = scanline32(f1, y);
+ pix2_32 = scanline32(f2, y);
+ for(x = 0; x < w; x++)
+ {
+ check = 0; // start with each pixel anew
+
+ redpix = r32(pix2_32[x]);
+ greenpix = g32(pix2_32[x]);
+ bluepix = b32(pix2_32[x]);
+ if ((redpix>=(red-rf))&&(redpix<=(red+rf))&&(greenpix>=(green-gf))&&(greenpix<=(green+gf))&&(bluepix>=(blue-bf))&&(bluepix<=(blue+bf)))
+ {
+ check = 1; // mask it
+ }
+ if ((redpix<(red-rfl))||(redpix>(red+rfl))&&(greenpix<(green-gfl))||(greenpix>(green+gfl))&&(bluepix<(blue-bfl))||(bluepix>(blue+bfl)))
+ {
+ check = 2; // target it
+ }
+
+ if (!check)
+ {
+ lum = (redpix + greenpix + bluepix) / 3.0;
+ keylum = (red + blue + green) / 3.0;
+ lowfuzz = (rf + gf + bf) / 3.0;
+ if (lowfuzz < 0.0) lowfuzz = 0.0;
+ highfuzz = (rf + gf + bf) / 3.0;
+ if (highfuzz > 1.0) highfuzz = 1.0;
+ lowfloor = keylum - ((rfl + gfl + bfl) / 3.0);
+ if (lowfloor < 0.0) lowfloor = 0.;
+ highfloor = keylum + (rfl + gfl + bfl) / 3.0;
+ if (highfloor > 1.0) highfloor = 1.0;
+ if (lum < keylum)
+ {
+ coeff = ((lum - lowfloor) / (keylum - lowfuzz));
+ }
+ if (lum >= keylum)
+ {
+ coeff = ((255 - lum - highfloor) / (255 - keylum - highfuzz));
+ }
+
+ rkeyed = ((float)r32(pix2_32[x]) * coeff) + ((float)r32(pix1_32[x]) * (1.0 - coeff));
+ gkeyed = ((float)g32(pix2_32[x]) * coeff) + ((float)g32(pix1_32[x]) * (1.0 - coeff));
+ bkeyed = ((float)b32(pix2_32[x]) * coeff) + ((float)b32(pix1_32[x]) * (1.0 - coeff));
+
+ pix2_32[x] = rgbtocolor32(rkeyed, gkeyed, bkeyed);
+ }
+
+ if (check==1)
+ { // was pix3
+ // pix2_32[x] = rgbtocolor32(r32(pix2_32[x]), g32(pix2_32[x]), b32(pix2_32[x]));
+ }
+ if (check==2)
+ { // was pix2
+ pix2_32[x] = rgbtocolor32(r32(pix1_32[x]), g32(pix1_32[x]), b32(pix1_32[x]));
+ }
+ }
+ }
+ break;
+ }
+}
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