PiDiP 0.12.19

svn path=/trunk/externals/pidip/; revision=3312

1 files changed, 184 insertions, 0 deletions

diff --git a/modules/pdp_hue.c b/modules/pdp_hue.c
new file mode 100644
index 0000000..28331ff
--- /dev/null
+++ b/modules/pdp_hue.c
@@ -0,0 +1,184 @@
+/*
+ *   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.
+ *
+ */
+
+#include "pdp.h"
+#include <math.h>
+
+static char   *pdp_hue_version = "pdp_hue: version 0.1, frame hue estimator, written by Yves Degoyon (ydegoyon@free.fr)";
+
+typedef struct pdp_hue_struct
+{
+    t_object x_obj;
+    t_float x_f;
+
+    t_outlet *x_meanr;
+    t_outlet *x_meang;
+    t_outlet *x_meanb;
+
+    t_int x_packet0;
+    t_int x_dropped;
+    t_int x_queue_id;
+
+    t_int x_vwidth;
+    t_int x_vheight;
+    t_int x_vsize;
+    unsigned int x_encoding;
+
+} t_pdp_hue;
+
+static void pdp_hue_process_rgb(t_pdp_hue *x)
+{
+    t_pdp     *header = pdp_packet_header(x->x_packet0);
+    unsigned char *data = (unsigned char*)pdp_packet_data(x->x_packet0);
+    int       i;
+
+    t_int px, py;
+    unsigned char *sr, *sg, *sb;
+    double meanr=0, meang=0, meanb=0;
+    t_int nbpixs=0;
+
+    /* allocate all ressources */
+    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;
+
+    sr = data;
+    meanr = 0.; meang = 0.; meanb =0.;
+
+    for(py=0; py<x->x_vheight; py++) 
+    {
+      for(px=0; px<x->x_vwidth; px++) 
+      {
+         meanr += (double)*(sr);
+         meang += (double)*(sr+1);
+         meanb += (double)*(sr+2);
+         sr+=3;
+         nbpixs++;
+      }
+    }
+    if ( nbpixs > 0 )
+    {
+      meanr = meanr / nbpixs;  
+      meang = meang / nbpixs;  
+      meanb = meanb / nbpixs;  
+    }
+
+    outlet_float( x->x_meanr, (t_float)meanr );
+    outlet_float( x->x_meang, (t_float)meang );
+    outlet_float( x->x_meanb, (t_float)meanb );
+
+    return;
+}
+
+static void pdp_hue_killpacket(t_pdp_hue *x)
+{
+    /* release the packet */
+    pdp_packet_mark_unused(x->x_packet0);
+    x->x_packet0 = -1;
+}
+
+static void pdp_hue_process(t_pdp_hue *x)
+{
+   int encoding;
+   t_pdp *header = 0;
+
+   /* check if image data packets are compatible */
+   if ( (header = pdp_packet_header(x->x_packet0))
+	&& (PDP_BITMAP == header->type))
+   {
+    
+	/* pdp_hue_process inputs and write into active inlet */
+	switch(pdp_packet_header(x->x_packet0)->info.image.encoding){
+
+	case PDP_BITMAP_RGB:
+            pdp_queue_add(x, pdp_hue_process_rgb, pdp_hue_killpacket, &x->x_queue_id);
+	    break;
+
+	default:
+	    /* don't know the type, so dont pdp_hue_process */
+	    break;
+	    
+	}
+    }
+}
+
+static void pdp_hue_input_0(t_pdp_hue *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_hue_process(x);
+
+    }
+}
+
+static void pdp_hue_free(t_pdp_hue *x)
+{
+  int i;
+
+    pdp_queue_finish(x->x_queue_id);
+    pdp_packet_mark_unused(x->x_packet0);
+}
+
+t_class *pdp_hue_class;
+
+void *pdp_hue_new(void)
+{
+    int i;
+
+    t_pdp_hue *x = (t_pdp_hue *)pd_new(pdp_hue_class);
+
+    x->x_meanr = outlet_new(&x->x_obj, &s_float); 
+    x->x_meang = outlet_new(&x->x_obj, &s_float); 
+    x->x_meanb = outlet_new(&x->x_obj, &s_float); 
+
+    x->x_packet0 = -1;
+    x->x_queue_id = -1;
+
+    return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_hue_setup(void)
+{
+//    post( pdp_hue_version );
+    pdp_hue_class = class_new(gensym("pdp_hue"), (t_newmethod)pdp_hue_new,
+    	(t_method)pdp_hue_free, sizeof(t_pdp_hue), 0, A_NULL);
+
+    class_addmethod(pdp_hue_class, (t_method)pdp_hue_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);
+    class_sethelpsymbol( pdp_hue_class, gensym("pdp_hue.pd") );
+
+}
+
+#ifdef __cplusplus
+}
+#endif