1 files changed, 264 insertions, 0 deletions

diff --git a/pdp_opencv_bgsubstract.c b/pdp_opencv_bgsubstract.c
new file mode 100644
index 0000000..406311b
--- /dev/null
+++ b/pdp_opencv_bgsubstract.c
@@ -0,0 +1,264 @@
+/*
+ *   Pure Data Packet module.
+ *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ *   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.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <limits.h>
+#include <dlfcn.h>
+
+#include "pdp.h"
+
+#ifndef _EiC
+#include "cv.h"
+#include "cvaux.h"
+#endif
+
+
+typedef struct pdp_opencv_bgsubstract_struct
+{
+    t_object x_obj;
+    t_float x_f;
+
+    t_outlet *x_outlet0;
+    int x_packet0;
+    int x_packet1;
+    int x_dropped;
+    int x_queue_id;
+
+    int x_width;
+    int x_height;
+    int x_size;
+
+    int x_infosok; 
+    int x_set; 
+    int x_threshold; 
+
+    IplImage *image, *prev_gray, *gray, *grayLow, *grayUp, *diff_8U;
+    
+} t_pdp_opencv_bgsubstract;
+
+static void pdp_opencv_bgsubstract_process_rgb(t_pdp_opencv_bgsubstract *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); 
+      
+
+    if ((x->x_width != (t_int)header->info.image.width) || 
+        (x->x_height != (t_int)header->info.image.height)) 
+    {
+
+    	post("pdp_opencv_bgsubstract :: resizing plugins");
+	
+    	x->x_width = header->info.image.width;
+    	x->x_height = header->info.image.height;
+    	x->x_size = x->x_width*x->x_height;
+    
+    	//Destroy cv_images
+	cvReleaseImage(&x->image);
+    	cvReleaseImage(&x->gray);
+    	cvReleaseImage(&x->grayLow);
+    	cvReleaseImage(&x->grayUp);
+    	cvReleaseImage(&x->prev_gray);
+    	cvReleaseImage(&x->diff_8U);
+    
+	//create the orig image with new size
+        x->image = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 3);
+    	// Create the output and temp images with new sizes
+    	x->gray = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 1);
+    	x->grayLow = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 1);
+    	x->grayUp = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 1);
+        x->prev_gray = cvCreateImage( cvSize(x->image->width,x->image->height), 8, 1 );
+        x->diff_8U = cvCreateImage( cvSize(x->image->width,x->image->height), 8, 1 );
+    }
+    
+    newheader->info.image.encoding = header->info.image.encoding;
+    newheader->info.image.width = x->x_width;
+    newheader->info.image.height = x->x_height;
+
+    memcpy( newdata, data, x->x_size*3 );
+    
+    // FEM UNA COPIA DEL PACKET A image->imageData ... http://www.cs.iit.edu/~agam/cs512/lect-notes/opencv-intro/opencv-intro.html aqui veiem la estructura de IplImage
+    memcpy( x->image->imageData, data, x->x_size*3 );
+
+    cvCvtColor( x->image, x->gray, CV_BGR2GRAY );
+
+    if (x->x_set) {
+    	memcpy( x->prev_gray->imageData, x->gray->imageData, x->x_size );
+	x->x_set=0;
+    } 
+
+    cvSubS (x->prev_gray,cvScalar(x->x_threshold,x->x_threshold,x->x_threshold,x->x_threshold),x->grayLow,NULL);
+    cvAddS (x->prev_gray,cvScalar(x->x_threshold,x->x_threshold,x->x_threshold,x->x_threshold),x->grayUp,NULL);
+    cvInRange (x->gray, x->grayLow, x->grayUp, x->diff_8U);
+
+    cvNot (x->diff_8U,x->diff_8U);
+
+    cvCvtColor(x->diff_8U,x->image,CV_GRAY2BGR);
+  
+    memcpy( newdata, x->image->imageData, x->x_size*3 );
+ 
+    return;
+}
+
+static void pdp_opencv_bgsubstract_threshold(t_pdp_opencv_bgsubstract *x, t_floatarg f)
+{
+	if (f>=1) x->x_threshold=(int)f;
+}
+
+static void pdp_opencv_bgsubstract_set(t_pdp_opencv_bgsubstract *x)
+{
+	x->x_set=1;
+}
+
+static void pdp_opencv_bgsubstract_sendpacket(t_pdp_opencv_bgsubstract *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_opencv_bgsubstract_process(t_pdp_opencv_bgsubstract *x)
+{
+   int encoding;
+   t_pdp *header = 0;
+   char *parname;
+   unsigned pi;
+   int partype;
+   float pardefault;
+   t_atom plist[2];
+   t_atom tlist[2];
+   t_atom vlist[2];
+
+   /* check if image data packets are compatible */
+   if ( (header = pdp_packet_header(x->x_packet0))
+	&& (PDP_BITMAP == header->type)){
+    
+	/* pdp_opencv_bgsubstract_process inputs and write into active inlet */
+	switch(pdp_packet_header(x->x_packet0)->info.image.encoding){
+
+	case PDP_BITMAP_RGB:
+            x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
+            pdp_queue_add(x, pdp_opencv_bgsubstract_process_rgb, pdp_opencv_bgsubstract_sendpacket, &x->x_queue_id);
+	    break;
+
+	default:
+	    /* don't know the type, so dont pdp_opencv_bgsubstract_process */
+	    break;
+	    
+	}
+    }
+
+}
+
+static void pdp_opencv_bgsubstract_input_0(t_pdp_opencv_bgsubstract *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("bitmap/rgb/*") );
+
+    if ((s == gensym("process")) && (-1 != x->x_packet0) && (!x->x_dropped))
+    {
+        /* add the process method and callback to the process queue */
+        pdp_opencv_bgsubstract_process(x);
+    }
+}
+
+static void pdp_opencv_bgsubstract_free(t_pdp_opencv_bgsubstract *x)
+{
+  int i;
+
+    pdp_queue_finish(x->x_queue_id);
+    pdp_packet_mark_unused(x->x_packet0);
+    //cv_freeplugins(x);
+    
+    	//Destroy cv_images
+	cvReleaseImage(&x->image);
+    	cvReleaseImage(&x->gray);
+    	cvReleaseImage(&x->grayLow);
+    	cvReleaseImage(&x->grayUp);
+    	cvReleaseImage(&x->prev_gray);
+    	cvReleaseImage(&x->diff_8U);
+}
+
+t_class *pdp_opencv_bgsubstract_class;
+
+
+void *pdp_opencv_bgsubstract_new(t_floatarg f)
+{
+    int i;
+
+    t_pdp_opencv_bgsubstract *x = (t_pdp_opencv_bgsubstract *)pd_new(pdp_opencv_bgsubstract_class);
+    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_width  = 320;
+    x->x_height = 240;
+    x->x_size   = x->x_width * x->x_height;
+
+    x->x_infosok = 0;
+    x->x_set = 1;
+    x->x_threshold = 13;
+
+    x->image = cvCreateImage(cvSize(x->x_width,x->x_height), IPL_DEPTH_8U, 3);
+    x->gray = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 1);
+    x->grayLow = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 1);
+    x->grayUp = cvCreateImage(cvSize(x->image->width,x->image->height), IPL_DEPTH_8U, 1);
+    x->prev_gray = cvCreateImage( cvSize(x->image->width,x->image->height), 8, 1 );
+    x->diff_8U = cvCreateImage( cvSize(x->image->width,x->image->height), 8, 1 );
+
+    return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_opencv_bgsubstract_setup(void)
+{
+
+    post( "		pdp_opencv_bgsubstract");
+    pdp_opencv_bgsubstract_class = class_new(gensym("pdp_opencv_bgsubstract"), (t_newmethod)pdp_opencv_bgsubstract_new,
+    	(t_method)pdp_opencv_bgsubstract_free, sizeof(t_pdp_opencv_bgsubstract), 0, A_DEFFLOAT, A_NULL);
+
+    class_addmethod(pdp_opencv_bgsubstract_class, (t_method)pdp_opencv_bgsubstract_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_opencv_bgsubstract_class, (t_method)pdp_opencv_bgsubstract_set, gensym("set"),  A_NULL );   
+    class_addmethod(pdp_opencv_bgsubstract_class, (t_method)pdp_opencv_bgsubstract_threshold, gensym("threshold"),  A_FLOAT, A_NULL );   
+
+}
+
+#ifdef __cplusplus
+}
+#endif