diff options
Diffstat (limited to 'modules')
| -rw-r--r-- | modules/pdp_dot.c | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/modules/pdp_dot.c b/modules/pdp_dot.c new file mode 100644 index 0000000..8417f6d --- /dev/null +++ b/modules/pdp_dot.c @@ -0,0 +1,348 @@ +/* + * 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 dot matrix filter + */ + +#include "pdp.h" +#include "yuv.h" +#include <math.h> +#include <stdio.h> + +static char *pdp_dot_version = "pdp_dot: dot matrix filter version 0.1 written by Yves Degoyon (ydegoyon@free.fr)"; + +typedef struct pdp_dot_struct +{ + t_object x_obj; + + int x_packet0; + int x_packet1; + int x_queue_id; + int x_dropped; + + int x_vwidth; + int x_vheight; + int x_vsize; + + int x_nbx; + int x_nby; + char *x_mask; // pre-calculated mask + + t_outlet *x_pdp_output; // output packets + +} t_pdp_dot; + +static void pdp_dot_update_mask(t_pdp_dot *x) +{ + int dotsizeX, dotsizeY; + int ray; + int curX=0, curY=0; + char *pfY; + int px, py; + + dotsizeX = (int) ( x->x_vwidth / x->x_nbx ); + dotsizeY = (int) ( x->x_vheight / x->x_nby ); + ray = (dotsizeX>dotsizeY) ? (dotsizeY/2):(dotsizeX/2); + + // post( "dotsizeX=%d dotsizeY=%d", dotsizeX, dotsizeY ); + + pfY = x->x_mask; + curY=0; + + while ( curY <= ( x->x_vheight - dotsizeY ) ) + { + curX=0; + while ( curX <= ( x->x_vwidth - dotsizeX ) ) + { + for(py=0; py<dotsizeY; py++) + { + for(px=0; px<dotsizeX; px++) + { + if ( sqrt( pow( (px-(dotsizeX/2)), 2 ) + pow( (py-(dotsizeY/2)), 2 ) ) < ray ) + { + *(pfY+(curY+py)*x->x_vwidth+(curX+px))=1; + } + else + { + *(pfY+(curY+py)*x->x_vwidth+(curX+px))=0; + } + } + } + curX += dotsizeX; + // post ( "curX=%d", curX ); + } + curY += dotsizeY; + // post ( "curY=%d", curY ); + } +} + +static void pdp_dot_allocate(t_pdp_dot *x) +{ + x->x_mask = (char *) getbytes ( x->x_vsize*sizeof(char*) ); + + if ( !x->x_mask ) + { + post( "pdp_dot : severe error : cannot allocate buffer !!! "); + return; + } + +} + +static void pdp_dot_nbx(t_pdp_dot *x, t_floatarg fnbx ) +{ + if ( ( (int)fnbx > 5 ) && ( (int)fnbx <= x->x_vwidth ) ) + { + x->x_nbx = (int) fnbx; + pdp_dot_update_mask( x ); + } +} + +static void pdp_dot_nby(t_pdp_dot *x, t_floatarg fnby ) +{ + if ( ( (int)fnby > 5 ) && ( (int)fnby <= x->x_vheight ) ) + { + x->x_nby = (int) fnby; + pdp_dot_update_mask( x ); + } +} + +static void pdp_dot_free_ressources(t_pdp_dot *x) +{ + if ( x->x_mask ) freebytes ( x->x_mask, x->x_vsize*sizeof(char*) ); +} + +static void pdp_dot_process_yv12(t_pdp_dot *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); + int i; + int px=0, py=0; + short int *pfY, *pfU, *pfV; + char *pmY; + double meanY, meanU, meanV; + int dotsizeX, dotsizeY; + int nbpixs, curX=0, curY=0; + + // allocate all ressources + if ( ( (int)header->info.image.width != x->x_vwidth ) || + ( (int)header->info.image.height != x->x_vheight ) ) + { + pdp_dot_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_dot_allocate( x ); + pdp_dot_update_mask( x ); + post( "pdp_dot : reallocated buffers" ); + } + + memcpy( newdata, data, x->x_vsize+(x->x_vsize>>1)<<1 ); + + dotsizeX = (int) ( x->x_vwidth / x->x_nbx ); + dotsizeY = (int) ( x->x_vheight / x->x_nby ); + + // post( "dotsizeX=%d dotsizeY=%d", dotsizeX, dotsizeY ); + + pmY = x->x_mask; + pfY = newdata; + pfV = newdata+x->x_vsize; + pfU = newdata+x->x_vsize+(x->x_vsize>>2); + nbpixs=0; + curY=0; + + while ( curY <= ( x->x_vheight - dotsizeY ) ) + { + curX=0; + while ( curX <= ( x->x_vwidth - dotsizeX ) ) + { + meanY=0; + meanU=0; + meanV=0; + nbpixs=0; + for(py=0; py<dotsizeY; py++) + { + for(px=0; px<dotsizeX; px++) + { + meanY += (double)*(pfY+(curY+py)*x->x_vwidth+(curX+px)); + meanU += (double)*(pfU+((curY+py)>>1)*(x->x_vwidth>>1)+((curX+px)>>1)); + meanV += (double)*(pfV+((curY+py)>>1)*(x->x_vwidth>>1)+((curX+px)>>1)); + nbpixs++; + } + } + for(py=0; py<dotsizeY; py++) + { + for(px=0; px<dotsizeX; px++) + { + *(pfY+(curY+py)*x->x_vwidth+(curX+px))=(meanY/nbpixs)*(*(pmY+(curY+py)*x->x_vwidth+(curX+px))); + *(pfU+((curY+py)>>1)*(x->x_vwidth>>1)+((curX+px)>>1))=(meanU/nbpixs)*(*(pmY+(curY+py)*x->x_vwidth+(curX+px))); + *(pfV+((curY+py)>>1)*(x->x_vwidth>>1)+((curX+px)>>1))=(meanV/nbpixs)*(*(pmY+(curY+py)*x->x_vwidth+(curX+px))); + } + } + curX += dotsizeX; + // post ( "curX=%d", curX ); + } + if ( curX < x->x_vwidth ) + { + curX -= dotsizeX; + for(py=0; py<dotsizeY; py++) + { + for(px=curX; px<x->x_vwidth; px++) + { + if ( (curY+py) < x->x_vheight ) + { + *(pfY+(curY+py)*x->x_vwidth+(px))=0; + } + } + } + } + curY += dotsizeY; + // post ( "curY=%d", curY ); + } + if ( curY < x->x_vheight ) + { + curY -= dotsizeY; + for(py=curY; py<x->x_vheight; py++) + { + for(px=0; px<x->x_vwidth; px++) + { + *(pfY+(py)*x->x_vwidth+(px))=0; + } + } + } + + newheader->info.image.encoding = header->info.image.encoding; + newheader->info.image.width = x->x_vwidth; + newheader->info.image.height = x->x_vheight; + + return; +} + +static void pdp_dot_sendpacket(t_pdp_dot *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_dot_process(t_pdp_dot *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_dot_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_dot_process_yv12, pdp_dot_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_dot_process */ + break; + + } + } + +} + +static void pdp_dot_input_0(t_pdp_dot *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_dot_process(x); + } +} + +static void pdp_dot_free(t_pdp_dot *x) +{ + int i; + + pdp_packet_mark_unused(x->x_packet0); + pdp_dot_free_ressources( x ); +} + +t_class *pdp_dot_class; + +void *pdp_dot_new(void) +{ + int i; + + t_pdp_dot *x = (t_pdp_dot *)pd_new(pdp_dot_class); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("nbx")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("nby")); + + 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_nbx = 100; + x->x_nby = 100; + + return (void *)x; +} + + +#ifdef __cplusplus +extern "C" +{ +#endif + + +void pdp_dot_setup(void) +{ + // post( pdp_dot_version ); + pdp_dot_class = class_new(gensym("pdp_dot"), (t_newmethod)pdp_dot_new, + (t_method)pdp_dot_free, sizeof(t_pdp_dot), 0, A_NULL); + + class_addmethod(pdp_dot_class, (t_method)pdp_dot_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL); + class_addmethod(pdp_dot_class, (t_method)pdp_dot_nbx, gensym("nbx"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_dot_class, (t_method)pdp_dot_nby, gensym("nby"), A_DEFFLOAT, A_NULL); +} + +#ifdef __cplusplus +} +#endif |