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-rw-r--r--modules/pdp_intrusion.c428
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diff --git a/modules/pdp_intrusion.c b/modules/pdp_intrusion.c
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+/*
+ * PiDiP module.
+ * Copyright (c) by Yves Degoyon (ydegoyon@free.fr)
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/* This object is an adaptation of hologram effect from effectv
+ * but, in these paranoid times, i found it funnier to rename it as intrusion
+ * because it can detect moving objects ( targets ?? )
+ * Originally written by Fukuchi Kentaro & others
+ * Pd-fication by Yves Degoyon
+ */
+
+
+
+#include "pdp.h"
+#include <math.h>
+
+#define NB_IMAGES 4
+#define MAGIC_THRESHOLD 10
+static unsigned int fastrand_val;
+#define inline_fastrand() (fastrand_val=fastrand_val*1103515245+12345)
+
+static char *pdp_intrusion_version = "pdp_intrusion: version 0.1, inspired by hologram from effectv( Fukuchi Kentaro ) adapted by Yves Degoyon (ydegoyon@free.fr)";
+
+typedef struct pdp_intrusion_struct
+{
+ t_object x_obj;
+ t_float x_f;
+
+ t_outlet *x_outlet0;
+ t_int x_packet0;
+ t_int x_packet1;
+ t_int x_dropped;
+ t_int x_queue_id;
+
+ unsigned int x_noisepattern[256]; // noise pattern
+ t_int x_vwidth;
+ t_int x_vheight;
+ t_int x_vsize;
+ unsigned int x_encoding;
+ short int *x_images[NB_IMAGES];
+ t_int x_rtimage;
+ short int *x_diff;
+ short int *x_bdata;
+ int x_threshold;
+ int x_phase;
+ int x_loopcount;
+ int x_threshfreq;
+
+} t_pdp_intrusion;
+
+/* check if there is a real difference with background image */
+short int *pdp_intrusion_diff(t_pdp_intrusion *x, short int *src)
+{
+ int i;
+ int Y;
+ int Yb;
+ short int *p=NULL;
+ short int *pb=NULL;
+ short int *r=NULL;
+ int v;
+
+ p = src;
+ pb = x->x_bdata;
+ r = x->x_diff;
+ for(i=0; i<(x->x_vsize); i++) {
+ Y = (*p);
+ Yb = (*pb);
+ *r = (Yb - Y);
+ p++; pb++;
+ r++;
+ }
+
+ return x->x_diff;
+}
+
+static void pdp_intrusion_threshold(t_pdp_intrusion *x, t_floatarg fthreshold )
+{
+ if ( fthreshold>0 && fthreshold<255 )
+ {
+ x->x_threshold = ((int)fthreshold ) << 8;
+ }
+}
+
+static void pdp_intrusion_background(t_pdp_intrusion *x )
+{
+ int i, j;
+
+ if ( ( x->x_images[0] == NULL ) ||
+ ( x->x_images[1] == NULL ) ||
+ ( x->x_images[2] == NULL ) ||
+ ( x->x_images[3] == NULL ) )
+ {
+ post( "pdp_intrusion_background : no images available !! " );
+ return;
+ }
+ post( "pdp_intrusion : setting background" );
+
+ memcpy( x->x_bdata, x->x_images[0], (( x->x_vsize + (x->x_vsize>>1))<<1));
+
+ for( i=1; i<NB_IMAGES; i++ )
+ {
+ for ( j=0; j<(x->x_vsize+(x->x_vsize>>1)); j++ )
+ {
+ x->x_bdata[j] = (x->x_bdata[j]&x->x_images[i][j])+((x->x_bdata[j]^x->x_images[i][j])>>1);
+ }
+ }
+}
+
+static void pdp_intrusion_allocate(t_pdp_intrusion *x, t_int newsize)
+{
+ int i;
+
+ for ( i=0; i<NB_IMAGES; i++ )
+ {
+ if ( x->x_images[i] != NULL )
+ {
+ freebytes( x->x_images[i], (x->x_vsize + (x->x_vsize>>1))<<1 );
+ }
+ }
+ if ( x->x_diff != NULL )
+ {
+ freebytes( x->x_diff, (x->x_vsize + (x->x_vsize>>1))<<1 );
+ }
+ if ( x->x_bdata ) freebytes( x->x_bdata, (( x->x_vsize + (x->x_vsize>>1))<<1));
+
+ x->x_vsize = newsize;
+ for ( i=0; i<NB_IMAGES; i++ )
+ {
+ x->x_images[i] = (short int*) getbytes((x->x_vsize + (x->x_vsize>>1))<<1);
+ }
+ x->x_diff = (short int*) getbytes((x->x_vsize + (x->x_vsize>>1))<<1);
+ x->x_bdata = (short int *)getbytes((( x->x_vsize + (x->x_vsize>>1))<<1));
+}
+
+static void pdp_intrusion_process_yv12(t_pdp_intrusion *x)
+{
+ t_pdp *header = pdp_packet_header(x->x_packet0);
+ short int *data = (short int *)pdp_packet_data(x->x_packet0);
+ t_pdp *newheader = pdp_packet_header(x->x_packet1);
+ short int *newdata = (short int *)pdp_packet_data(x->x_packet1);
+ int i;
+
+ unsigned int totalnbpixels;
+ unsigned int u_offset;
+ unsigned int v_offset;
+ unsigned int totnbpixels;
+ int px, py;
+ short int *diff;
+ short int *sy, *su, *sv, t;
+ short int *sby, *sbu, *sbv;
+ short int *sny, *snu, *snv;
+ int Y=0, U=0, V=0;
+
+ /* allocate all ressources */
+ if ( (int)(header->info.image.width*header->info.image.height) != x->x_vsize )
+ {
+ pdp_intrusion_allocate(x, header->info.image.width*header->info.image.height );
+ post( "pdp_intrusion : reallocating buffers" );
+ }
+
+ x->x_vwidth = header->info.image.width;
+ x->x_vheight = header->info.image.height;
+ x->x_vsize = x->x_vwidth*x->x_vheight;
+ x->x_encoding = header->info.image.encoding;
+
+ totalnbpixels = x->x_vsize;
+ u_offset = x->x_vsize;
+ v_offset = x->x_vsize + (x->x_vsize>>2);
+ totnbpixels = x->x_vsize + (x->x_vsize>>1);
+
+ newheader->info.image.encoding = x->x_encoding;
+ newheader->info.image.width = x->x_vwidth;
+ newheader->info.image.height = x->x_vheight;
+
+ /* copy images if necessary */
+ memcpy( x->x_images[x->x_rtimage], data, (( x->x_vsize + (x->x_vsize>>1))<<1));
+ x->x_rtimage=(x->x_rtimage+1)%4;
+
+ if ( !x->x_bdata ) return;
+
+ /* check pixels which has changed */
+ diff = pdp_intrusion_diff(x, data);
+
+ sy = data;
+ su = (data+x->x_vsize);
+ sv = (data+x->x_vsize+(x->x_vsize>>2));
+ sby = x->x_bdata;
+ sbu = (x->x_bdata+x->x_vsize);
+ sbv = (x->x_bdata+x->x_vsize+(x->x_vsize>>2));
+ sny = newdata;
+ snu = (newdata+x->x_vsize);
+ snv = (newdata+x->x_vsize+(x->x_vsize>>2));
+
+ for(py=1; py<x->x_vheight; py++)
+ {
+ if(((py+x->x_phase) & 0x7f)<0x58)
+ {
+ for(px=0; px<x->x_vwidth; px++)
+ {
+ if ( sv >= data + x->x_vsize + (x->x_vsize>>1 ) ) break;
+ if(*diff > x->x_threshold)
+ {
+ t = x->x_noisepattern[inline_fastrand()>>24];
+ Y = (*sy) + t;
+ U = (*su) + t;
+ V = (*sv) + t;
+ Y = (Y>>1)-100;
+ U = (U>>1)-100;
+ V = V>>2;
+ Y += ((*sby)>>1)+((rand()%255)<<8);
+ U += ((*sbu)>>1)+((rand()%255)<<8);
+ V += ((*sbv)>>1)+((rand()%255)<<8);
+ // clipping
+ if((Y>>8)<20) Y=20<<8;
+ if((U>>8)<-108) U=-108<<8;
+ if((V>>8)<-108) V=-108<<8;
+ if((Y>>8)>255) Y = 255;
+ if((U>>8)>128) U = 128;
+ if((V>>8)>128) V = 128;
+ *sny = Y;
+ *snu = U;
+ *snv = V;
+ }
+ else
+ {
+ *sny = *sy;
+ *snu = *su;
+ *snv = *sv;
+ }
+ diff++; sy++; sby++; sny++;
+ if ( ((px+1)%2==0) && ((py+1)%2==0))
+ {
+ su++; sbu++; snu++;
+ sv++; sbv++; snv++;
+ }
+ }
+ }
+ else
+ {
+ for(px=0; px<x->x_vwidth; px++)
+ {
+ if ( sv >= data + x->x_vsize + (x->x_vsize>>1 ) ) break;
+ if(*diff > x->x_threshold){
+ t = x->x_noisepattern[inline_fastrand()>>24];
+ Y = (*sy) + t;
+ U = (*su) + t;
+ V = (*sv) + t;
+ Y = (Y>>1)-100;
+ U = (U>>1)-100;
+ V = V>>2;
+ Y += ((*sby)>>1)+((rand()%255)<<8);
+ U += ((*sbu)>>1)+((rand()%255)<<8);
+ V += ((*sbv)>>1)+((rand()%255)<<8);
+ if((Y>>8)<0) Y=0;
+ if((U>>8)<-128) U=-128<<8;
+ if((V>>8)<-128) V=-128<<8;
+ if((Y>>8)>255) Y = 255;
+ if((U>>8)>128) U = 128;
+ if((V>>8)>128) V = 128;
+ *sny = Y;
+ *snu = U;
+ *snv = V;
+ } else {
+ *sny = *sy;
+ *snu = *su;
+ *snv = *sv;
+ }
+ diff++; sy++; sby++; sny++;
+ if ( ((px+1)%2==0) && ((py+1)%2==0) )
+ {
+ su++; sbu++; snu++;
+ sv++; sbv++; snv++;
+ }
+ }
+ }
+ }
+
+ x->x_phase-=37;
+
+ return;
+}
+
+static void pdp_intrusion_sendpacket(t_pdp_intrusion *x)
+{
+ /* release the packet */
+ pdp_packet_mark_unused(x->x_packet0);
+ x->x_packet0 = -1;
+
+ /* unregister and propagate if valid dest packet */
+ pdp_packet_pass_if_valid(x->x_outlet0, &x->x_packet1);
+}
+
+static void pdp_intrusion_process(t_pdp_intrusion *x)
+{
+ int encoding;
+ t_pdp *header = 0;
+
+ /* check if image data packets are compatible */
+ if ( (header = pdp_packet_header(x->x_packet0))
+ && (PDP_IMAGE == header->type)){
+
+ /* pdp_intrusion_process inputs and write into active inlet */
+ switch(pdp_packet_header(x->x_packet0)->info.image.encoding){
+
+ case PDP_IMAGE_YV12:
+ x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
+ pdp_queue_add(x, pdp_intrusion_process_yv12, pdp_intrusion_sendpacket, &x->x_queue_id);
+ break;
+
+ case PDP_IMAGE_GREY:
+ // pdp_intrusion_process_packet(x);
+ break;
+
+ default:
+ /* don't know the type, so dont pdp_intrusion_process */
+ break;
+
+ }
+ }
+}
+
+static void pdp_intrusion_input_0(t_pdp_intrusion *x, t_symbol *s, t_floatarg f)
+{
+ /* if this is a register_ro message or register_rw message, register with packet factory */
+
+ if (s== gensym("register_rw"))
+ x->x_dropped = pdp_packet_convert_ro_or_drop(&x->x_packet0, (int)f, pdp_gensym("image/YCrCb/*") );
+
+ if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped)){
+
+ /* add the process method and callback to the process queue */
+ pdp_intrusion_process(x);
+
+ }
+}
+
+static void pdp_intrusion_free(t_pdp_intrusion *x)
+{
+ int i;
+
+ pdp_queue_finish(x->x_queue_id);
+ pdp_packet_mark_unused(x->x_packet0);
+
+ for (i=0; i<NB_IMAGES; i++ )
+ {
+ if ( x->x_images[i] ) freebytes( x->x_images[i], (x->x_vsize + (x->x_vsize>>1))<<1 );
+ }
+
+}
+
+t_class *pdp_intrusion_class;
+
+void *pdp_intrusion_new(void)
+{
+ int i;
+
+ t_pdp_intrusion *x = (t_pdp_intrusion *)pd_new(pdp_intrusion_class);
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_bang, gensym("background"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("threshold"));
+
+ x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+
+ x->x_packet0 = -1;
+ x->x_packet1 = -1;
+ x->x_queue_id = -1;
+
+ x->x_threshold = MAGIC_THRESHOLD<<8;
+ x->x_phase = 0;
+ x->x_bdata = NULL;
+ x->x_diff = NULL;
+ x->x_vsize = -1;
+ x->x_loopcount = 0;
+ x->x_threshfreq = 10;
+
+ // initialize noise pattern
+ for(i=0; i<256; i++)
+ {
+ x->x_noisepattern[i] = (i * i * i / 40000)* i / 256;
+ }
+
+ // initialize images
+ for(i=0; i<NB_IMAGES; i++)
+ {
+ x->x_images[i] = NULL;
+ }
+ x->x_rtimage=0;
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_intrusion_setup(void)
+{
+// post( pdp_intrusion_version );
+ pdp_intrusion_class = class_new(gensym("pdp_intrusion"), (t_newmethod)pdp_intrusion_new,
+ (t_method)pdp_intrusion_free, sizeof(t_pdp_intrusion), 0, A_NULL);
+
+ class_addmethod(pdp_intrusion_class, (t_method)pdp_intrusion_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_intrusion_class, (t_method)pdp_intrusion_background, gensym("background"), A_NULL);
+ class_addmethod(pdp_intrusion_class, (t_method)pdp_intrusion_threshold, gensym("threshold"), A_FLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
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