diff options
Diffstat (limited to 'modules/pdp_ascii.c')
| -rw-r--r-- | modules/pdp_ascii.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/modules/pdp_ascii.c b/modules/pdp_ascii.c new file mode 100644 index 0000000..5d2dc50 --- /dev/null +++ b/modules/pdp_ascii.c @@ -0,0 +1,258 @@ +/* + * 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 an ASCII art object replacing blocks with ASCII characters + * Written by Yves Degoyon ( ydegoyon@free.fr ) + */ + + +#include "pdp.h" +#include "yuv.h" +#include "charmaps.h" +#include <math.h> + +static char *pdp_ascii_version = "pdp_ascii: version 0.1, ASCII art output written by ydegoyon@free.fr"; + +typedef struct pdp_ascii_struct +{ + t_object x_obj; + t_float x_f; + + t_int x_packet0; + t_int x_packet1; + t_int x_dropped; + t_int x_queue_id; + + t_outlet *x_outlet0; + t_int x_vwidth; + t_int x_vheight; + t_int x_vsize; + + t_int x_color; // rendering color option + t_int x_brightness; // added value for brightness + t_float x_ratio; // character to pixel ratio + +} t_pdp_ascii; + +static void pdp_ascii_color(t_pdp_ascii *x, t_floatarg fcolor) +{ + if ( ((int)fcolor == 0) || ((int)fcolor == 1) ) + { + x->x_color = (int)fcolor; + } +} + +static void pdp_ascii_ratio(t_pdp_ascii *x, t_floatarg fratio) +{ + if ( ( fratio > 0) && ( x->x_ratio < x->x_vwidth/2 ) ) + { + x->x_ratio = fratio; + } +} + +static void pdp_ascii_brightness(t_pdp_ascii *x, t_floatarg fbrightness) +{ + if ( ((int)fbrightness > 0) && ((int)fbrightness < 255) ) + { + x->x_brightness = (int)fbrightness; + } +} + +static void pdp_ascii_process_yv12(t_pdp_ascii *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, pixsum; + t_int px, py, ppx, ppy; + t_int rank, value; + t_int pwidth, pheight; + + x->x_vwidth = header->info.image.width; + x->x_vheight = header->info.image.height; + x->x_vsize = x->x_vwidth*x->x_vheight; + + newheader->info.image.encoding = header->info.image.encoding; + newheader->info.image.width = x->x_vwidth; + newheader->info.image.height = x->x_vheight; + + memset( newdata, 0x00, (x->x_vsize+(x->x_vsize>>1))<<1 ); + + pwidth = (int) CHARWIDTH*x->x_ratio; + if (pwidth==0) pwidth=1; + if (pwidth>x->x_vwidth) return; + pheight = (int) CHARHEIGHT*x->x_ratio; + if (pheight==0) pheight=1; + if (pheight>x->x_vheight) return; + + for(py=1; py<x->x_vheight; py+=pheight) + { + for(px=0; px<x->x_vwidth; px+=pwidth) + { + pixsum = 0; + for ( ppy=0; ppy<pheight; ppy++ ) + { + for ( ppx=0; ppx<pwidth; ppx++ ) + { + pixsum += (data[(py+ppy)*x->x_vwidth + (px+ppx)]>>7); + } + } + rank = (pixsum/(pheight*pwidth))/2; // set the chosen character + for ( ppy=0; ppy<pheight; ppy++ ) + { + for ( ppx=0; ppx<pwidth; ppx++ ) + { + if ( ( px+ppx > x->x_vwidth ) || + ( py+ppy > x->x_vheight ) ) + { + break; + } + if ( charmaps[rank][((int)(ppy/x->x_ratio))*CHARWIDTH+((int)(ppx/x->x_ratio))] ) + { + value = ( (2*rank+x->x_brightness) > 255 ) ? 255 : (2*rank+x->x_brightness); + newdata[(py+ppy)*x->x_vwidth+(px+ppx)] = (value)<<7; + if ( x->x_color ) + { + newdata[x->x_vsize+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)] = + data[x->x_vsize+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)]; + newdata[x->x_vsize+(x->x_vsize>>2)+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)] = + data[x->x_vsize+(x->x_vsize>>2)+((py+ppy)>>1)*(x->x_vwidth>>1)+((px+ppx)>>1)]; + } + } + } + } + } + } + + return; +} + +static void pdp_ascii_sendpacket(t_pdp_ascii *x) +{ + /* delete source 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_ascii_process(t_pdp_ascii *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_ascii_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_ascii_process_yv12, pdp_ascii_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_ascii_process */ + break; + + } + } + +} + +static void pdp_ascii_input_0(t_pdp_ascii *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_ascii_process(x); + } + +} + +static void pdp_ascii_free(t_pdp_ascii *x) +{ + int i; + + pdp_queue_finish(x->x_queue_id); + pdp_packet_mark_unused(x->x_packet0); +} + +t_class *pdp_ascii_class; + +void *pdp_ascii_new(void) +{ + int i; + + t_pdp_ascii *x = (t_pdp_ascii *)pd_new(pdp_ascii_class); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ratio")); + + x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); + x->x_packet0 = -1; + x->x_packet1 = -1; + x->x_queue_id = -1; + x->x_color = 1; + x->x_ratio = 1.; + x->x_brightness = 25; + + return (void *)x; +} + + +#ifdef __cplusplus +extern "C" +{ +#endif + + +void pdp_ascii_setup(void) +{ + post( pdp_ascii_version ); + pdp_ascii_class = class_new(gensym("pdp_ascii"), (t_newmethod)pdp_ascii_new, + (t_method)pdp_ascii_free, sizeof(t_pdp_ascii), 0, A_NULL); + + class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL); + class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_color, gensym("color"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_brightness, gensym("brightness"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_ascii_class, (t_method)pdp_ascii_ratio, gensym("ratio"), A_DEFFLOAT, A_NULL); + +} + +#ifdef __cplusplus +} +#endif |