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Diffstat (limited to 'modules/pdp_distance.c')
| -rw-r--r-- | modules/pdp_distance.c | 337 |
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 |