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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);
class_sethelpsymbol( pdp_lumafilt_class, gensym("pdp_lumafilt.pd") );
}
#ifdef __cplusplus
}
#endif
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