diff options
Diffstat (limited to 'modules/pdp_text.c')
| -rw-r--r-- | modules/pdp_text.c | 630 |
1 files changed, 630 insertions, 0 deletions
diff --git a/modules/pdp_text.c b/modules/pdp_text.c new file mode 100644 index 0000000..81bd83f --- /dev/null +++ b/modules/pdp_text.c @@ -0,0 +1,630 @@ +/* + * 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 text rendering object for PDP + * It uses imlib2 for all graphical operations + */ + +/* Listening to : + * Deviants - Nothing Man + * Monte Cazzaza - Kick That Habit Man + */ + +#include "pdp.h" +#include "yuv.h" +#include <math.h> +#include <ctype.h> +#include <Imlib2.h> // imlib2 is required + +#define DEFAULT_CAPACITY 10 +#define DEFAULT_FONT "helmetr/16" + +static char *pdp_text_version = "pdp_text: version 0.2 : text rendering object written by ydegoyon@free.fr"; + +typedef struct pdp_text_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; + + char **x_text_array; + t_int *x_xoffsets; + t_int *x_yoffsets; + t_int *x_r; + t_int *x_g; + t_int *x_b; + t_float *x_angle; + t_int *x_scroll; + + t_int x_nbtexts; + t_int x_current; + t_int x_capacity; + + /* imlib data */ + Imlib_Image x_image; + Imlib_Font x_font; + +} t_pdp_text; + + /* add a new text : syntax : text <my%20text> x y */ +static void pdp_text_add(t_pdp_text *x, t_symbol *s, int argc, t_atom *argv) +{ + char *pname; + char *pdname; + + if ( x->x_nbtexts >= x->x_capacity ) + { + post( "pdp_text : sorry, maximum capacity has been reached... try resize" ); + return; + } + + if ( argc < 3 ) + { + post( "pdp_text : error in the number of arguments ( minimum is 3 )", argc ); + return; + } + if ( argv[0].a_type != A_SYMBOL || argv[1].a_type != A_FLOAT || argv[2].a_type != A_FLOAT ) { + post( "pdp_text : add : wrong arguments" ); + return; + } + + // allocate new text area + pdname = x->x_text_array[x->x_nbtexts] = (char *) malloc( strlen( argv[0].a_w.w_symbol->s_name ) ); + pname=argv[0].a_w.w_symbol->s_name; + while (*(pname)) + { + if ( (*pname=='%') && ( isdigit(*(pname+1)) || (*(pname+1)=='%') ) ) + { + t_int ivalue; + t_int ndigits; + char *piname; + + ndigits=0; + piname=pname+1; + while ( isdigit( *(piname++) ) ) ndigits++; + + ivalue=atoi(pname+1); + + // special case %% + if ( ( pname != argv[0].a_w.w_symbol->s_name ) && ( *(pname+1) == '%' ) ) + { + *(pdname++)=*(pname++); + pname++; + continue; + } + *(pdname++)=(char)ivalue; + pname+=ndigits+1; + } + else if ( !strncmp( pname, "\"", 1 ) ) // quotes are ignored unless %34 + { + pname++; + } + else + { + *(pdname++)=*(pname++); + } + } + *(pdname)='\0'; + x->x_xoffsets[x->x_nbtexts] = (int)argv[1].a_w.w_float; + x->x_yoffsets[x->x_nbtexts] = (int)argv[2].a_w.w_float; + + if ( (argc>=4) && (argv[3].a_type == A_FLOAT) ) + { + x->x_r[x->x_nbtexts] = (int)argv[3].a_w.w_float; + } + if ( (argc>=5) && (argv[4].a_type == A_FLOAT) ) + { + x->x_g[x->x_nbtexts] = (int)argv[4].a_w.w_float; + } + if ( (argc>=6) && (argv[5].a_type == A_FLOAT) ) + { + x->x_b[x->x_nbtexts] = (int)argv[5].a_w.w_float; + } + if ( (argc>=7) && (argv[6].a_type == A_FLOAT) ) + { + x->x_angle[x->x_nbtexts] = argv[6].a_w.w_float; + } + if ( (argc>=8) && (argv[7].a_type == A_FLOAT) ) + { + x->x_scroll[x->x_nbtexts] = (int)argv[7].a_w.w_float; + } + + + post( "pdp_text : added text >%s< @ %d (r=%d g=%d b=%d)", + x->x_text_array[x->x_nbtexts], x->x_nbtexts, + x->x_r[x->x_nbtexts], x->x_g[x->x_nbtexts], x->x_b[x->x_nbtexts] ); + + if ( x->x_current == -1 ) x->x_current = x->x_nbtexts; + x->x_nbtexts++; + +} + +static void pdp_text_current(t_pdp_text *x, t_floatarg fcurrent ) +{ + if ( ( fcurrent >= 0 ) && ( fcurrent < x->x_nbtexts ) ) + { + x->x_current = fcurrent; + } +} + +static void pdp_text_textx(t_pdp_text *x, t_floatarg fx ) +{ + if ( ( x->x_current >= 0 ) && ( x->x_current < x->x_nbtexts ) ) + { + x->x_xoffsets[ x->x_current ] = fx; + } +} + +static void pdp_text_texty(t_pdp_text *x, t_floatarg fy ) +{ + if ( ( x->x_current >= 0 ) && ( x->x_current < x->x_nbtexts ) ) + { + x->x_yoffsets[ x->x_current ] = fy; + } +} + +static void pdp_text_textr(t_pdp_text *x, t_floatarg fr ) +{ + if ( ( x->x_current >= 0 ) && ( x->x_current < x->x_nbtexts ) ) + { + x->x_r[ x->x_current ] = fr; + } +} + +static void pdp_text_textg(t_pdp_text *x, t_floatarg fg ) +{ + if ( ( x->x_current >= 0 ) && ( x->x_current < x->x_nbtexts ) ) + { + x->x_g[ x->x_current ] = fg; + } +} + +static void pdp_text_textb(t_pdp_text *x, t_floatarg fb ) +{ + if ( ( x->x_current >= 0 ) && ( x->x_current < x->x_nbtexts ) ) + { + x->x_b[ x->x_current ] = fb; + } +} + +static void pdp_text_angle(t_pdp_text *x, t_floatarg fangle ) +{ + if ( ( x->x_current >= 0 ) && ( x->x_current < x->x_nbtexts ) ) + { + x->x_angle[ x->x_current ] = fangle; + } +} + +static void pdp_text_scroll(t_pdp_text *x, t_floatarg fscroll ) +{ + if ( ( x->x_current >= 0 ) && ( x->x_current < x->x_nbtexts ) ) + { + x->x_scroll[ x->x_current ] = fscroll; + } +} + +static void pdp_text_dither(t_pdp_text *x, t_floatarg fdither ) +{ + imlib_context_set_dither( (char)fdither ); +} + +static void pdp_text_blend(t_pdp_text *x, t_floatarg fblend ) +{ + imlib_context_set_blend( (char)fblend ); +} + +static void pdp_text_antialias(t_pdp_text *x, t_floatarg fantialias ) +{ + imlib_context_set_anti_alias( (char)fantialias ); +} + +static void pdp_text_clear(t_pdp_text *x ) +{ + x->x_nbtexts = 0; +} + +static void pdp_text_delete(t_pdp_text *x, t_floatarg fnum ) +{ + t_int i; + char *lostword; + + if ( ( fnum>0 ) && ( fnum<=x->x_nbtexts ) ) + { + lostword = x->x_text_array[ (int)fnum-1 ]; + for ( i=(int)fnum; i<x->x_nbtexts; i++ ) + { + x->x_text_array[ i-1 ] = x->x_text_array[ i ]; + x->x_xoffsets[ i-1 ] = x->x_xoffsets[ i ]; + x->x_yoffsets[ i-1 ] = x->x_yoffsets[ i ]; + x->x_r[ i-1 ] = x->x_r[ i ]; + x->x_g[ i-1 ] = x->x_g[ i ]; + x->x_b[ i-1 ] = x->x_b[ i ]; + x->x_angle[ i-1 ] = x->x_angle[ i ]; + x->x_scroll[ i-1 ] = x->x_scroll[ i ]; + } + x->x_nbtexts--, + free( lostword ); + } +} + +static void pdp_text_resize(t_pdp_text *x, t_floatarg fnewsize ) +{ + char **text_array; + t_int *xoffsets; + t_int *yoffsets; + t_int *r; + t_int *g; + t_int *b; + t_float *angle; + t_int *scroll; + + t_int i, csize; + + if ( (int) fnewsize<=0 ) return; + + // allocate new structures + text_array = (char**) getbytes( fnewsize*sizeof(char*) ); + xoffsets = (t_int*) getbytes( fnewsize*sizeof(t_int) ); + yoffsets = (t_int*) getbytes( fnewsize*sizeof(t_int) ); + r = (t_int*) getbytes( fnewsize*sizeof(t_int) ); + g = (t_int*) getbytes( fnewsize*sizeof(t_int) ); + b = (t_int*) getbytes( fnewsize*sizeof(t_int) ); + angle = (t_float*) getbytes( fnewsize*sizeof(t_float) ); + scroll = (t_int*) getbytes( fnewsize*sizeof(t_int) ); + + + for ( i=0; i<fnewsize; i++ ) + { + r[i] = g[i] = b[i] = 255; + } + + if ( fnewsize < x->x_nbtexts ) + { + post( "pdp_text : new size is too small : texts lost !!" ); + csize = fnewsize; + } + else + { + csize = x->x_nbtexts; + } + + // copy all values + for ( i=0; i<csize; i++ ) + { + text_array[i] = (char*) malloc( strlen( x->x_text_array[i] ) + 1 ); + strcpy( text_array[i], x->x_text_array[i] ); + free( x->x_text_array[i] ); + xoffsets[i] = x->x_xoffsets[i]; + yoffsets[i] = x->x_yoffsets[i]; + r[i] = x->x_r[i]; + g[i] = x->x_g[i]; + b[i] = x->x_b[i]; + angle[i] = x->x_angle[i]; + scroll[i] = x->x_scroll[i]; + } + + // free old structures + if ( x->x_text_array ) freebytes( x->x_text_array, x->x_capacity*sizeof(char*) ); + if ( x->x_xoffsets ) freebytes( x->x_xoffsets, x->x_capacity*sizeof(t_int) ); + if ( x->x_yoffsets ) freebytes( x->x_yoffsets, x->x_capacity*sizeof(t_int) ); + if ( x->x_r ) freebytes( x->x_r, x->x_capacity*sizeof(t_int) ); + if ( x->x_g ) freebytes( x->x_g, x->x_capacity*sizeof(t_int) ); + if ( x->x_b ) freebytes( x->x_b, x->x_capacity*sizeof(t_int) ); + if ( x->x_angle) freebytes( x->x_angle, x->x_capacity*sizeof(t_float) ); + if ( x->x_scroll) freebytes( x->x_scroll, x->x_capacity*sizeof(t_int) ); + + // set new structures + x->x_text_array = text_array; + x->x_xoffsets = xoffsets; + x->x_yoffsets = yoffsets; + x->x_r = r; + x->x_g = g; + x->x_b = b; + x->x_angle = angle; + x->x_scroll = scroll; + x->x_nbtexts = csize; + x->x_capacity = csize; + if ( x->x_nbtexts > 0 ) + { + x->x_current = 0; + } + else + { + x->x_current = -1; + } +} + +static void pdp_text_font(t_pdp_text *x, t_symbol *sfont ) +{ + Imlib_Font font; + + font = imlib_load_font(sfont->s_name); + if ( !font ) + { + post( "pdp_text : could not load font : >%s<", sfont->s_name ); + return; + } + imlib_context_set_font( font ); + x->x_font = font; +} + +static void pdp_text_allocate(t_pdp_text *x) +{ + x->x_image = imlib_create_image( x->x_vwidth, x->x_vheight ); + if ( x->x_image == NULL ) + { + post( "pdp_text : severe error : could not allocate image !!" ); + return; + } + imlib_context_set_image(x->x_image); +} + +static void pdp_text_free_ressources(t_pdp_text *x) +{ + if ( x->x_image != NULL ) imlib_free_image(); +} + +static void pdp_text_process_yv12(t_pdp_text *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 ti; + t_int px, py; + unsigned char y, u, v; + DATA32 *imdata; + DATA32 bgcolor; + short int *pY, *pU, *pV; + int text_width, text_height; + + if ( ( (int)(header->info.image.width) != x->x_vwidth ) || + ( (int)(header->info.image.height) != x->x_vheight ) ) + { + pdp_text_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_text_allocate(x); + } + + 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 ); + + // draw all texts + imlib_image_clear(); + imlib_context_set_direction(IMLIB_TEXT_TO_ANGLE); + imdata = imlib_image_get_data(); + bgcolor = imdata[0]; + + for (ti=0; ti<x->x_nbtexts; ti++) + { + imlib_context_set_angle( x->x_angle[ti] ); + imlib_context_set_color( x->x_r[ti], x->x_g[ti], x->x_b[ti], 255 ); + + imlib_get_text_size( x->x_text_array[ti], &text_width, &text_height); + + imlib_text_draw( x->x_xoffsets[ti] - (0.5*text_width) + (cos(x->x_angle[ti]) * x->x_scroll[ti]), x->x_yoffsets[ti] - (0.5*text_height) + (sin(x->x_angle[ti]) * x->x_scroll[ti]), x->x_text_array[ti] ); + } + + pY = newdata; + pV = newdata+x->x_vsize; + pU = newdata+x->x_vsize+(x->x_vsize>>2); + for ( py=0; py<x->x_vheight; py++ ) + { + for ( px=0; px<x->x_vwidth; px++ ) + { + if ( imdata[py*x->x_vwidth+px] != bgcolor ) + { + y = yuv_RGBtoY(imdata[py*x->x_vwidth+px]); + u = yuv_RGBtoU(imdata[py*x->x_vwidth+px]); + v = yuv_RGBtoV(imdata[py*x->x_vwidth+px]); + + *(pY) = y<<7; + if ( (px%2==0) && (py%2==0) ) + { + *(pV) = (v-128)<<8; + *(pU) = (u-128)<<8; + } + } + pY++; + if ( (px%2==0) && (py%2==0) ) + { + pV++;pU++; + } + } + } + + return; +} + +static void pdp_text_sendpacket(t_pdp_text *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_text_process(t_pdp_text *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_text_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_text_process_yv12, pdp_text_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_text_process */ + break; + + } + } + +} + +static void pdp_text_input_0(t_pdp_text *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_text_process(x); + + } + +} + +static void pdp_text_free(t_pdp_text *x) +{ + int i; + + pdp_text_free_ressources(x); + pdp_queue_finish(x->x_queue_id); + pdp_packet_mark_unused(x->x_packet0); +} + +t_class *pdp_text_class; + +void *pdp_text_new(void) +{ + int i; + + t_pdp_text *x = (t_pdp_text *)pd_new(pdp_text_class); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("current")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("textx")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("texty")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("textr")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("textg")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("textb")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("angle")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("scroll")); + + 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_image = NULL; + + x->x_font = imlib_context_get_font(); + + x->x_capacity = DEFAULT_CAPACITY; + + + x->x_text_array = (char**) getbytes( x->x_capacity*sizeof(char*) ); + x->x_xoffsets = (t_int*) getbytes( x->x_capacity*sizeof(t_int) ); + x->x_yoffsets = (t_int*) getbytes( x->x_capacity*sizeof(t_int) ); + x->x_r = (t_int*) getbytes( x->x_capacity*sizeof(t_int) ); + x->x_g = (t_int*) getbytes( x->x_capacity*sizeof(t_int) ); + x->x_b = (t_int*) getbytes( x->x_capacity*sizeof(t_int) ); + x->x_angle = (t_float*) getbytes( x->x_capacity*sizeof(t_float) ); + x->x_scroll = (t_int*) getbytes( x->x_capacity*sizeof(t_int) ); + + for ( i=0; i<x->x_capacity; i++ ) + { + x->x_r[i] = x->x_g[i] = x->x_b[i] = 255; + } + + x->x_nbtexts = 0; + x->x_current = -1; + + return (void *)x; +} + + +#ifdef __cplusplus +extern "C" +{ +#endif + + +void pdp_text_setup(void) +{ + Imlib_Font font; + + post( pdp_text_version ); + pdp_text_class = class_new(gensym("pdp_text"), (t_newmethod)pdp_text_new, + (t_method)pdp_text_free, sizeof(t_pdp_text), 0, A_NULL); + + class_addmethod(pdp_text_class, (t_method)pdp_text_input_0, gensym("pdp"), + A_SYMBOL, A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_add, gensym("text"), A_GIMME, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_current, gensym("current"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_textx, gensym("textx"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_texty, gensym("texty"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_textr, gensym("textr"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_textg, gensym("textg"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_textb, gensym("textb"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_clear, gensym("clear"), A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_delete, gensym("delete"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_resize, gensym("resize"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_font, gensym("font"), A_SYMBOL, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_angle, gensym("angle"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_scroll, gensym("scroll"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_dither, gensym("dither"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_blend, gensym("blend"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_text_class, (t_method)pdp_text_antialias, gensym("antialias"), A_DEFFLOAT, A_NULL); + + imlib_add_path_to_font_path("/usr/X11R6/lib/X11/fonts/TTF"); + font = imlib_load_font(DEFAULT_FONT); + if ( !font ) + { + post( "pdp_text : severe error : could not load default font : no rendering !!!" ); + } + imlib_context_set_font( font ); +} + +#ifdef __cplusplus +} +#endif |