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-rw-r--r--modules/pdp_lumafilt.c255
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diff --git a/modules/pdp_lumafilt.c b/modules/pdp_lumafilt.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 effect filters some levels of luminosity
+ * Useful to isolate some objects
+ * Written by Yves Degoyon
+ */
+
+
+
+#include "pdp.h"
+#include <math.h>
+
+#define MAX_LUMA 256
+
+static char *pdp_lumafilt_version = "pdp_lumafilt: version 0.1, written by Yves Degoyon (ydegoyon@free.fr)";
+
+typedef struct pdp_lumafilt_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_filter[MAX_LUMA]; // transform number
+
+} t_pdp_lumafilt;
+
+static void pdp_lumafilt_free_ressources(t_pdp_lumafilt *x)
+{
+ // nothing
+}
+
+static void pdp_lumafilt_allocate(t_pdp_lumafilt *x)
+{
+ // nothing
+}
+
+static void pdp_lumafilt_filter(t_pdp_lumafilt *x, t_floatarg fluma, t_floatarg fonoff )
+{
+ if ( ( (int)fluma >= 0 ) && ( (int)fluma < MAX_LUMA ) )
+ {
+ if ( ((int)fonoff == 0 ) || ((int)fonoff == 1 ) )
+ {
+ x->x_filter[ (int)fluma ] = (int)fonoff;
+ }
+ }
+}
+
+static void pdp_lumafilt_mfilter(t_pdp_lumafilt *x, t_floatarg flumas, t_floatarg flumae, t_floatarg fonoff )
+{
+ t_int li;
+
+ if ( ( (int)flumas >= 0 ) && ( (int)flumas < MAX_LUMA ) &&
+ ( (int)flumae >= 0 ) && ( (int)flumae < MAX_LUMA ) &&
+ ( flumas < flumae ) )
+ {
+ if ( ((int)fonoff == 0 ) || ((int)fonoff == 1 ) )
+ {
+ for ( li=(int)flumas; li<=(int)flumae; li++ )
+ {
+ x->x_filter[ li ] = (int)fonoff;
+ }
+ }
+ }
+}
+
+static void pdp_lumafilt_process_yv12(t_pdp_lumafilt *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 px, py, luma;
+ short int *pnY, *pnU, *pnV;
+
+ /* allocate all ressources */
+ if ( (int)(header->info.image.width*header->info.image.height) != x->x_vsize )
+ {
+ pdp_lumafilt_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_lumafilt_allocate(x);
+ post( "pdp_lumafilt : reallocated buffers" );
+ }
+
+ newheader->info.image.encoding = header->info.image.encoding;
+ newheader->info.image.width = x->x_vwidth;
+ newheader->info.image.height = x->x_vheight;
+
+ pnY = newdata;
+ pnV = newdata+x->x_vsize;
+ pnU = newdata+x->x_vsize+(x->x_vsize>>2);
+
+ memcpy( newdata, data, (x->x_vsize + (x->x_vsize>>1))<<1 );
+
+ for (py = 0; py < x->x_vheight; py++) {
+ for (px = 0; px < x->x_vwidth; px++) {
+ luma = (*(pnY)>>7);
+ if ( ( luma >0 ) && ( luma < MAX_LUMA ) ) // paranoid
+ {
+ if ( x->x_filter[luma] )
+ {
+ *(pnY) = 0;
+ *(pnU) = 0;
+ *(pnV) = 0;
+ }
+ }
+ else
+ {
+ post( "pdp_lumafilt : luminosity value out of bounds : %d", luma );
+ }
+ pnY++;
+ if ( (px%2==0) && (py%2==0) )
+ {
+ *pnU++; *pnV++;
+ }
+ }
+ }
+
+ return;
+}
+
+static void pdp_lumafilt_sendpacket(t_pdp_lumafilt *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_lumafilt_process(t_pdp_lumafilt *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_lumafilt_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_lumafilt_process_yv12, pdp_lumafilt_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_lumafilt_process */
+ break;
+
+ }
+ }
+}
+
+static void pdp_lumafilt_input_0(t_pdp_lumafilt *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_lumafilt_process(x);
+ }
+}
+
+static void pdp_lumafilt_free(t_pdp_lumafilt *x)
+{
+ int i;
+
+ pdp_queue_finish(x->x_queue_id);
+ pdp_packet_mark_unused(x->x_packet0);
+ pdp_lumafilt_free_ressources(x);
+}
+
+t_class *pdp_lumafilt_class;
+
+void *pdp_lumafilt_new(void)
+{
+ int fi;
+
+ t_pdp_lumafilt *x = (t_pdp_lumafilt *)pd_new(pdp_lumafilt_class);
+
+ x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
+ x->x_packet0 = -1;
+ x->x_packet1 = -1;
+ x->x_queue_id = -1;
+
+ for ( fi=0; fi<MAX_LUMA; fi++ )
+ {
+ x->x_filter[fi] = 0;
+ }
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_lumafilt_setup(void)
+{
+// post( pdp_lumafilt_version );
+ pdp_lumafilt_class = class_new(gensym("pdp_lumafilt"), (t_newmethod)pdp_lumafilt_new,
+ (t_method)pdp_lumafilt_free, sizeof(t_pdp_lumafilt), 0, A_NULL);
+
+ class_addmethod(pdp_lumafilt_class, (t_method)pdp_lumafilt_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_lumafilt_class, (t_method)pdp_lumafilt_filter, gensym("filter"), A_DEFFLOAT, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_lumafilt_class, (t_method)pdp_lumafilt_mfilter, gensym("mfilter"), A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
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