PiDiP 0.12.17

svn path=/trunk/externals/pidip/; revision=2273

1 files changed, 337 insertions, 0 deletions

diff --git a/modules/pdp_distance.c b/modules/pdp_distance.c
new file mode 100644
index 0000000..34b3ddf
--- /dev/null
+++ b/modules/pdp_distance.c
@@ -0,0 +1,337 @@
+/*
+ *   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 a salience distance operator 
+ *  ( inspired by Paul Rosin, 91, http://www.cs.cf.ac.uk/User/Paul.Rosin/resources/sdt/ )
+ */
+
+#include "pdp.h"
+#include "yuv.h"
+#include <math.h>
+#include <stdio.h>
+
+static char   *pdp_distance_version = "pdp_distance: morphology : distance operator version 0.1 written by Yves Degoyon (ydegoyon@free.fr)";
+
+typedef struct pdp_distance_struct
+{
+    t_object x_obj;
+
+    t_int x_packet0;
+    t_int x_packet1;
+    t_int x_queue_id;
+    t_int x_dropped;
+
+    t_int x_vwidth;
+    t_int x_vheight;
+    t_int x_vsize;
+    short int *x_frame;  // keep a copy of current frame for transformations
+
+    t_int x_coeff1;
+    t_int x_coeff2;
+    t_int x_coeff3;
+    t_int x_coeff4;
+
+    t_outlet *x_pdp_output; // output packets
+
+} t_pdp_distance;
+
+static void pdp_distance_allocate(t_pdp_distance *x)
+{
+    x->x_frame = (short int *) getbytes ( ( x->x_vsize + ( x->x_vsize>>1 ) ) << 1 );
+
+    if ( !x->x_frame )
+    {
+       post( "pdp_distance : severe error : cannot allocate buffer !!! ");
+       return;
+    }
+}
+
+static void pdp_distance_coeff1(t_pdp_distance *x, t_floatarg fcoeff1 )
+{
+   x->x_coeff1 = (int) fcoeff1;
+}
+
+static void pdp_distance_coeff2(t_pdp_distance *x, t_floatarg fcoeff2 )
+{
+   x->x_coeff2 = (int) fcoeff2;
+}
+
+static void pdp_distance_coeff3(t_pdp_distance *x, t_floatarg fcoeff3 )
+{
+   x->x_coeff3 = (int) fcoeff3;
+}
+
+static void pdp_distance_coeff4(t_pdp_distance *x, t_floatarg fcoeff4 )
+{
+   x->x_coeff4 = (int) fcoeff4;
+}
+
+static void pdp_distance_free_ressources(t_pdp_distance *x)
+{
+    if ( x->x_frame ) freebytes ( x->x_frame, ( x->x_vsize + ( x->x_vsize>>1 ) ) << 1 );
+}
+
+static void pdp_distance_process_yv12(t_pdp_distance *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);
+    t_int     i;
+    t_int     px=0, py=0; 
+    short int *pfY, *pfU, *pfV;
+    t_int     nvalues, values[5], ival, mval;
+
+    // allocate all ressources
+    if ( ( (int)header->info.image.width != x->x_vwidth ) ||
+         ( (int)header->info.image.height != x->x_vheight ) )
+    {
+        pdp_distance_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_distance_allocate( x );
+        post( "pdp_distance : reallocated buffers" );
+    }
+
+    // post( "pdp_distance : newheader:%x", newheader );
+
+    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 );
+    memcpy( x->x_frame, data, x->x_vsize+(x->x_vsize>>1)<<1 );
+
+    pfY = x->x_frame;
+    pfV = x->x_frame+x->x_vsize;
+    pfU = x->x_frame+x->x_vsize+(x->x_vsize>>2);
+    
+    // thresholding
+    for ( py=0; py<x->x_vheight; py++ )
+    {
+      for ( px=0; px<x->x_vwidth; px++ )
+      {
+         if ( *(pfY+py*x->x_vwidth+px) > ((128)<<7) )
+         {
+            *(pfY+py*x->x_vwidth+px) = ((128)<<7);
+         }
+      }
+    }
+
+    // forward pass
+    for ( py=0; py<x->x_vheight; py++ )
+    {
+      for ( px=0; px<x->x_vwidth; px++ )
+      {
+        nvalues = 0;
+        if ( ((px-1)>=0) && ((py-1)>=0) )
+        {
+           values[nvalues] = *(pfY+(py-1)*x->x_vwidth+(px-1)) + (x->x_coeff1<<7);
+           nvalues++;
+        }
+        if ( (py-1)>=0 )
+        {
+           values[nvalues] = *(pfY+(py-1)*x->x_vwidth+px) + (x->x_coeff2<<7);
+           nvalues++;
+        }
+        if ( ((px+1)<x->x_vwidth) && ((py-1)>=0) )
+        {
+           values[nvalues] = *(pfY+(py-1)*x->x_vwidth+(px+1)) + (x->x_coeff3<<7);
+           nvalues++;
+        }
+        if ( (px-1)>=0 )
+        {
+           values[nvalues] = *(pfY+py*x->x_vwidth+(px-1)) + (x->x_coeff4<<7);
+           nvalues++;
+        }
+        values[nvalues] = *(pfY+py*x->x_vwidth+px);
+        nvalues++;
+
+        mval = values[0];
+        for (ival=0; ival<nvalues; ival++)
+        {
+           if (values[ival]<mval) mval=values[ival];
+        }
+        *(x->x_frame+py*x->x_vwidth+px)=mval;
+      }
+    }
+
+    // backward pass
+    for ( py=x->x_vheight-1; py>=0; py-- )
+    {
+      for ( px=x->x_vwidth-1; px>=0; px-- )
+      {
+        nvalues = 0;
+        if ( ((px-1)>=0) && ((py+1)<x->x_vheight) )
+        {
+           values[nvalues] = *(pfY+(py+1)*x->x_vwidth+(px-1)) + (x->x_coeff1<<7);
+           nvalues++;
+        }
+        if ( (py+1)<x->x_vheight )
+        {
+           values[nvalues] = *(pfY+(py+1)*x->x_vwidth+px) + (x->x_coeff2<<7);
+           nvalues++;
+        }
+        if ( ((px+1)<x->x_vwidth) && ((py+1)<x->x_vheight) )
+        {
+           values[nvalues] = *(pfY+(py+1)*x->x_vwidth+(px+1)) + (x->x_coeff3<<7);
+           nvalues++;
+        }
+        if ( (px+1)<x->x_vwidth )
+        {
+           values[nvalues] = *(pfY+py*x->x_vwidth+(px+1)) + (x->x_coeff4<<7);
+           nvalues++;
+        }
+        values[nvalues] = *(pfY+py*x->x_vwidth+px);
+        nvalues++;
+
+        mval = values[0];
+        for (ival=0; ival<nvalues; ival++)
+        {
+           if (values[ival]<mval) mval=values[ival];
+        }
+        *(x->x_frame+py*x->x_vwidth+px)=mval;
+      }
+    }
+
+    memcpy( newdata, x->x_frame, x->x_vsize+(x->x_vsize>>1)<<1 );
+
+    return;
+}
+
+static void pdp_distance_sendpacket(t_pdp_distance *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_pdp_output, &x->x_packet1);
+}
+
+static void pdp_distance_process(t_pdp_distance *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_distance_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_distance_process_yv12, pdp_distance_sendpacket, &x->x_queue_id);
+	    break;
+
+	case PDP_IMAGE_GREY:
+            // should write something to handle these one day
+            // but i don't use this mode                      
+	    break;
+
+	default:
+	    /* don't know the type, so dont pdp_distance_process */
+	    break;
+	    
+	}
+    }
+
+}
+
+static void pdp_distance_input_0(t_pdp_distance *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))
+    {
+        pdp_distance_process(x);
+    }
+}
+
+static void pdp_distance_free(t_pdp_distance *x)
+{
+  int i;
+
+    pdp_packet_mark_unused(x->x_packet0);
+    pdp_distance_free_ressources( x );
+}
+
+t_class *pdp_distance_class;
+
+void *pdp_distance_new(void)
+{
+    int i;
+
+    t_pdp_distance *x = (t_pdp_distance *)pd_new(pdp_distance_class);
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("coeff1"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("coeff2"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("coeff3"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("coeff4"));
+
+    x->x_pdp_output = outlet_new(&x->x_obj, &s_anything); 
+
+    x->x_packet0 = -1;
+    x->x_packet1 = -1;
+    x->x_vwidth = -1;
+    x->x_vheight = -1;
+    x->x_vsize = -1;
+    x->x_frame = NULL;
+
+    x->x_coeff1 = 4;
+    x->x_coeff2 = 3;
+    x->x_coeff3 = 4;
+    x->x_coeff4 = 3;
+
+    return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_distance_setup(void)
+{
+    // post( pdp_distance_version );
+    pdp_distance_class = class_new(gensym("pdp_distance"), (t_newmethod)pdp_distance_new,
+    	(t_method)pdp_distance_free, sizeof(t_pdp_distance), 0, A_NULL);
+
+    class_addmethod(pdp_distance_class, (t_method)pdp_distance_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_distance_class, (t_method)pdp_distance_coeff1, gensym("coeff1"),  A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_distance_class, (t_method)pdp_distance_coeff2, gensym("coeff2"),  A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_distance_class, (t_method)pdp_distance_coeff3, gensym("coeff3"),  A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_distance_class, (t_method)pdp_distance_coeff4, gensym("coeff4"),  A_DEFFLOAT, A_NULL);
+    class_sethelpsymbol( pdp_distance_class, gensym("pdp_distance.pd") );
+}
+
+#ifdef __cplusplus
+}
+#endif