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-rw-r--r--modules/pdp_ripple.c567
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diff --git a/modules/pdp_ripple.c b/modules/pdp_ripple.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 ripple effect from effectv
+ * Originally written by Fukuchi Kentaro & others
+ * Pd-fication by Yves Degoyon
+ */
+
+
+
+#include "pdp.h"
+#include <math.h>
+
+#define MAGIC_THRESHOLD 30
+
+static unsigned int fastrand_val;
+#define inline_fastrand() (fastrand_val=fastrand_val*1103515245+12345)
+
+static int sqrtable[256];
+static int sqrt_init=1;
+static const int point = 16;
+static const int impact = 2;
+static const int decay = 8;
+static const int loopnum = 2;
+static int period = 0;
+static int rain_stat = 0;
+static unsigned int drop_prob = 0;
+static int drop_prob_increment = 0;
+static int drops_per_frame_max = 0;
+static int drops_per_frame = 0;
+static int drop_power = 0;
+
+static char *pdp_ripple_version = "pdp_ripple: version 0.1, port of ripple from effectv( Fukuchi Kentaro ) adapted by Yves Degoyon (ydegoyon@free.fr)";
+
+typedef struct pdp_ripple_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;
+
+ t_int x_vwidth;
+ t_int x_vheight;
+ t_int x_vsize;
+ t_int x_maph;
+ t_int x_mapw;
+ t_int x_mode;
+ t_int x_threshold;
+ t_int *x_map;
+ t_int *x_map1;
+ t_int *x_map2;
+ t_int *x_map3;
+ signed char *x_vtable;
+ short int *x_diff;
+ short int *x_bdata;
+ t_int x_snapshot;
+
+} t_pdp_ripple;
+
+static void pdp_ripple_mode(t_pdp_ripple *x, t_floatarg fmode )
+{
+ if ( ( fmode == 0 ) || ( fmode == 1 ) )
+ {
+ x->x_mode = (int)fmode;
+ }
+}
+
+static void pdp_ripple_threshold(t_pdp_ripple *x, t_floatarg fthreshold )
+{
+ x->x_threshold = (int)fthreshold;
+}
+
+static void pdp_ripple_increment(t_pdp_ripple *x, t_floatarg fincrement )
+{
+ drop_prob_increment = (int)fincrement;
+}
+
+static void pdp_ripple_background(t_pdp_ripple *x )
+{
+ x->x_snapshot = 1;
+}
+
+static void pdp_ripple_free_ressources(t_pdp_ripple *x)
+{
+ 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));
+ if ( x->x_map ) freebytes(x->x_map, x->x_maph*x->x_mapw*3*sizeof(t_int));
+ if ( x->x_vtable ) freebytes(x->x_vtable, x->x_maph*x->x_mapw*2*sizeof(signed char));
+}
+
+static void pdp_ripple_allocate(t_pdp_ripple *x)
+{
+ int i;
+
+ 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));
+ x->x_maph = x->x_vheight / 2 + 1;
+ x->x_mapw = x->x_vwidth / 2 + 1;
+ x->x_map = (int *)getbytes(x->x_maph*x->x_mapw*3*sizeof(t_int));
+ x->x_vtable = (signed char *)getbytes(x->x_maph*x->x_mapw*2*sizeof(signed char));
+ if( !x->x_map || x->x_vtable || !x->x_bdata || ! x->x_diff ) {
+ post( "pdp_ripple : severe error : cannot allocate buffers" );
+ }
+ x->x_map1 = x->x_map;
+ x->x_map2 = x->x_map + x->x_maph * x->x_mapw;
+ x->x_map3 = x->x_map + x->x_mapw * x->x_maph * 2;
+
+}
+
+/* check if there is a real difference with background image */
+short int *pdp_ripple_diff(t_pdp_ripple *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) > x->x_threshold ) ? (Yb - Y) : 0;
+ p++; pb++;
+ r++;
+ }
+
+ return x->x_diff;
+}
+
+static void pdp_ripple_motion_detect(t_pdp_ripple *x, short int *src)
+{
+ short int *diff;
+ int width;
+ int *p, *q;
+ int px, py, h;
+
+ diff = pdp_ripple_diff(x, src);
+ width = x->x_vwidth;
+ p = x->x_map1+x->x_mapw+1;
+ q = x->x_map2+x->x_mapw+1;
+ diff += width+2;
+
+ for(py=x->x_maph-2; py>0; py--)
+ {
+ for(px=x->x_mapw-2; px>0; px--)
+ {
+ h = (int)*diff;// + (int)*(diff+1) + (int)*(diff+width) + (int)*(diff+width+1);
+ if(h>0) {
+ *p = h<<(point + impact - 8);
+ *q = *p;
+ }
+ p++;
+ q++;
+ diff += 2;
+ }
+ diff += width+2;
+ p+=2;
+ q+=2;
+ }
+}
+
+static inline void pdp_ripple_drop(t_pdp_ripple *x, int power)
+{
+ int px, py;
+ int *p, *q;
+
+ px = inline_fastrand()%(x->x_mapw-4)+2;
+ py = inline_fastrand()%(x->x_maph-4)+2;
+ p = x->x_map1 + py*x->x_mapw + px;
+ q = x->x_map2 + py*x->x_mapw + px;
+ *p = power;
+ *q = power;
+ *(p-x->x_mapw) = *(p-1) = *(p+1) = *(p+x->x_mapw) = power/2;
+ *(p-x->x_mapw-1) = *(p-x->x_mapw+1) = *(p+x->x_mapw-1) = *(p+x->x_mapw+1) = power/4;
+ *(q-x->x_mapw) = *(q-1) = *(q+1) = *(q+x->x_mapw) = power/2;
+ *(q-x->x_mapw-1) = *(q-x->x_mapw+1) = *(q+x->x_mapw-1) = *(p+x->x_mapw+1) = power/4;
+}
+
+static void pdp_ripple_raindrop(t_pdp_ripple *x)
+{
+ int i;
+
+ if(period == 0)
+ {
+ switch(rain_stat)
+ {
+ case 0:
+ period = (inline_fastrand()>>23)+100;
+ drop_prob = 0;
+ drop_prob_increment = 0x00ffffff/period;
+ drop_power = (-(inline_fastrand()>>28)-2)<<point;
+ drops_per_frame_max = 2<<(inline_fastrand()>>30); // 2,4,8 or 16
+ rain_stat = 1;
+ break;
+ case 1:
+ drop_prob = 0x00ffffff;
+ drops_per_frame = 1;
+ drop_prob_increment = 1;
+ period = (drops_per_frame_max - 1) * 16;
+ rain_stat = 2;
+ break;
+ case 2:
+ period = (inline_fastrand()>>22)+1000;
+ drop_prob_increment = 0;
+ rain_stat = 3;
+ break;
+ case 3:
+ period = (drops_per_frame_max - 1) * 16;
+ drop_prob_increment = -1;
+ rain_stat = 4;
+ break;
+ case 4:
+ period = (inline_fastrand()>>24)+60;
+ drop_prob_increment = -(drop_prob/period);
+ rain_stat = 5;
+ break;
+ case 5:
+ default:
+ period = (inline_fastrand()>>23)+500;
+ drop_prob = 0;
+ rain_stat = 0;
+ break;
+ }
+ }
+ switch(rain_stat)
+ {
+ default:
+ case 0:
+ break;
+ case 1:
+ case 5:
+ if((inline_fastrand()>>8)<drop_prob)
+ {
+ pdp_ripple_drop(x, drop_power);
+ }
+ drop_prob += drop_prob_increment;
+ break;
+ case 2:
+ case 3:
+ case 4:
+ for(i=drops_per_frame/16; i>0; i--)
+ {
+ pdp_ripple_drop(x, drop_power);
+ }
+ drops_per_frame += drop_prob_increment;
+ break;
+ }
+ period--;
+}
+
+static void pdp_ripple_process_yv12(t_pdp_ripple *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;
+ int dx, dy;
+ int h, v;
+ int width, height;
+ int *p, *q, *r;
+ signed char *vp;
+
+ /* allocate all ressources */
+ if ( (int)(header->info.image.width*header->info.image.height) != x->x_vsize )
+ {
+ pdp_ripple_free_ressources(x);
+ x->x_vwidth = header->info.image.width;
+ x->x_vheight = header->info.image.height;
+ x->x_vsize = x->x_vwidth*x->x_vheight;
+ pdp_ripple_allocate(x);
+ post( "pdp_ripple : reallocated buffers" );
+ }
+
+ if ( x->x_bdata && x->x_snapshot )
+ {
+ x->x_snapshot = 0;
+ memcpy( x->x_bdata, data, (x->x_vsize + (x->x_vsize<<1))<<1 );
+ }
+
+ 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 = header->info.image.encoding;
+ newheader->info.image.width = x->x_vwidth;
+ newheader->info.image.height = x->x_vheight;
+
+ memcpy( newdata, data, (x->x_vsize + (x->x_vsize>>1))<<1 );
+
+ if ( x->x_mode )
+ {
+ pdp_ripple_motion_detect(x, data);
+ }
+ else
+ {
+ pdp_ripple_raindrop(x);
+ }
+
+ /* simulate surface wave */
+ width = x->x_mapw;
+ height = x->x_maph;
+
+ /* This function is called only 30 times per second. To increase a speed
+ * of wave, iterates this loop several times. */
+ for(i=loopnum; i>0; i--)
+ {
+ /* wave simulation */
+ p = x->x_map1 + width + 1;
+ q = x->x_map2 + width + 1;
+ r = x->x_map3 + width + 1;
+ for(py=height-2; py>0; py--)
+ {
+ for(px=width-2; px>0; px--)
+ {
+ h = *(p-width-1) + *(p-width+1) + *(p+width-1) + *(p+width+1)
+ + *(p-width) + *(p-1) + *(p+1) + *(p+width) - (*p)*9;
+ h = h >> 3;
+ v = *p - *q;
+ v += h - (v >> decay);
+ *r = v + *p;
+ p++;
+ q++;
+ r++;
+ }
+ p += 2;
+ q += 2;
+ r += 2;
+ }
+
+ /* low pass filter */
+ p = x->x_map3 + width + 1;
+ q = x->x_map2 + width + 1;
+ for(py=height-2; py>0; py--)
+ {
+ for(px=width-2; px>0; px--)
+ {
+ h = *(p-width) + *(p-1) + *(p+1) + *(p+width) + (*p)*60;
+ *q = h >> 6;
+ p++;
+ q++;
+ }
+ p+=2;
+ q+=2;
+ }
+
+ p = x->x_map1;
+ x->x_map1 = x->x_map2;
+ x->x_map2 = p;
+ }
+
+ vp = x->x_vtable;
+ p = x->x_map1;
+ for(py=height-1; py>0; py--)
+ {
+ for(px=width-1; px>0; px--)
+ {
+ /* difference of the height between two voxel. They are twiced to
+ * emphasise the wave. */
+ vp[0] = sqrtable[((p[0] - p[1])>>(point-1))&0xff];
+ vp[1] = sqrtable[((p[0] - p[width])>>(point-1))&0xff];
+ p++;
+ vp+=2;
+ }
+ p++;
+ vp+=2;
+ }
+
+ height = x->x_vheight;
+ width = x->x_vwidth;
+ vp = x->x_vtable;
+
+ /* draw refracted image. The vector table is stretched. */
+ for(py=0; py<height; py+=2)
+ {
+ for(px=0; px<width; px+=2)
+ {
+ h = (int)vp[0];
+ v = (int)vp[1];
+ dx = px + h;
+ dy = py + v;
+ if(dx<0) dx=0;
+ if(dy<0) dy=0;
+ if(dx>=width) dx=width-1;
+ if(dy>=height) dy=height-1;
+ newdata[0] = data[dy*width+dx];
+
+ i = dx;
+
+ dx = px + 1 + (h+(int)vp[2])/2;
+ if(dx<0) dx=0;
+ if(dx>=width) dx=width-1;
+ newdata[1] = data[dy*width+dx];
+
+ dy = py + 1 + (v+(int)vp[x->x_mapw*2+1])/2;
+ if(dy<0) dy=0;
+ if(dy>=height) dy=height-1;
+ newdata[width] = data[dy*width+i];
+
+ newdata[width+1] = data[dy*width+dx];
+ newdata+=2;
+ vp+=2;
+ }
+ newdata += width;
+ vp += 2;
+ }
+
+ return;
+}
+
+static void pdp_ripple_sendpacket(t_pdp_ripple *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_ripple_process(t_pdp_ripple *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_ripple_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_ripple_process_yv12, pdp_ripple_sendpacket, &x->x_queue_id);
+ break;
+
+ case PDP_IMAGE_GREY:
+ // pdp_ripple_process_packet(x);
+ break;
+
+ default:
+ /* don't know the type, so dont pdp_ripple_process */
+ break;
+
+ }
+ }
+}
+
+static void pdp_ripple_input_0(t_pdp_ripple *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_ripple_process(x);
+ }
+}
+
+static void pdp_ripple_free(t_pdp_ripple *x)
+{
+ int i;
+
+ pdp_queue_finish(x->x_queue_id);
+ pdp_packet_mark_unused(x->x_packet0);
+ pdp_ripple_free_ressources(x);
+}
+
+t_class *pdp_ripple_class;
+
+void *pdp_ripple_new(void)
+{
+ int i;
+
+ t_pdp_ripple *x = (t_pdp_ripple *)pd_new(pdp_ripple_class);
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("mode"));
+ 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"));
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("increment"));
+
+ 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_mode = 0;
+ x->x_vsize = -1;
+ x->x_snapshot = 1;
+ x->x_threshold = MAGIC_THRESHOLD;
+
+ if ( sqrt_init )
+ {
+ sqrt_init = 0;
+ for(i=0; i<128; i++) {
+ sqrtable[i] = i*i;
+ }
+ for(i=1; i<=128; i++) {
+ sqrtable[256-i] = -i*i;
+ }
+ }
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_ripple_setup(void)
+{
+// post( pdp_ripple_version );
+ pdp_ripple_class = class_new(gensym("pdp_ripple"), (t_newmethod)pdp_ripple_new,
+ (t_method)pdp_ripple_free, sizeof(t_pdp_ripple), 0, A_NULL);
+
+ class_addmethod(pdp_ripple_class, (t_method)pdp_ripple_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_ripple_class, (t_method)pdp_ripple_mode, gensym("mode"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_ripple_class, (t_method)pdp_ripple_background, gensym("background"), A_NULL);
+ class_addmethod(pdp_ripple_class, (t_method)pdp_ripple_threshold, gensym("threshold"), A_FLOAT, A_NULL);
+ class_addmethod(pdp_ripple_class, (t_method)pdp_ripple_increment, gensym("increment"), A_FLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-29 12:08:21 +0000