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-rw-r--r--modules/pdp_ascii.c153
1 files changed, 142 insertions, 11 deletions
diff --git a/modules/pdp_ascii.c b/modules/pdp_ascii.c
index cf7f77a..a43956c 100644
--- a/modules/pdp_ascii.c
+++ b/modules/pdp_ascii.c
@@ -25,9 +25,11 @@
#include "pdp.h"
#include "yuv.h"
-#include "charmaps.h"
+#include "default.map"
#include <math.h>
+#define LINE_MAX_LENGTH 1024
+
static char *pdp_ascii_version = "pdp_ascii: version 0.1, ASCII art output written by ydegoyon@free.fr";
typedef struct pdp_ascii_struct
@@ -49,6 +51,13 @@ typedef struct pdp_ascii_struct
t_int x_brightness; // added value for brightness
t_float x_ratio; // character to pixel ratio
+ t_int x_charwidth; // width of characters
+ t_int x_charheight; // height of characters
+ t_int x_nbchars; // number of characters in the map
+ char* x_charmaps; // the table of characters
+
+ FILE *x_filed; // charmaps file descriptor
+
} t_pdp_ascii;
static void pdp_ascii_color(t_pdp_ascii *x, t_floatarg fcolor)
@@ -61,9 +70,12 @@ static void pdp_ascii_color(t_pdp_ascii *x, t_floatarg fcolor)
static void pdp_ascii_ratio(t_pdp_ascii *x, t_floatarg fratio)
{
- if ( ( fratio > 0) && ( x->x_ratio < x->x_vwidth/2 ) )
+ if ( ( fratio > 0)
+ && ( fratio < x->x_vwidth/x->x_charwidth )
+ && ( fratio < x->x_vheight/x->x_charheight ) )
{
x->x_ratio = fratio;
+ // post( "psp_ascii : set ratio : %f", x->x_ratio );
}
}
@@ -84,7 +96,7 @@ static void pdp_ascii_process_yv12(t_pdp_ascii *x)
t_int i, pixsum;
t_int px, py, ppx, ppy;
t_int rank, value;
- t_int pwidth, pheight;
+ t_int pwidth, pheight, offset;
x->x_vwidth = header->info.image.width;
x->x_vheight = header->info.image.height;
@@ -96,14 +108,16 @@ static void pdp_ascii_process_yv12(t_pdp_ascii *x)
memset( newdata, 0x00, (x->x_vsize+(x->x_vsize>>1))<<1 );
- pwidth = (int) CHARWIDTH*x->x_ratio;
+ pwidth = (int) x->x_charwidth*x->x_ratio;
if (pwidth==0) pwidth=1;
- if (pwidth>x->x_vwidth) return;
- pheight = (int) CHARHEIGHT*x->x_ratio;
+ // if (pwidth>x->x_vwidth) return;
+ pheight = (int) x->x_charheight*x->x_ratio;
if (pheight==0) pheight=1;
- if (pheight>x->x_vheight) return;
+ // if (pheight>x->x_vheight) return;
- for(py=1; py<x->x_vheight; py+=pheight)
+ // post( "psp_ascii : pwidth=%d, pheight=%d", pwidth, pheight );
+
+ for(py=0; py<x->x_vheight; py+=pheight)
{
for(px=0; px<x->x_vwidth; px+=pwidth)
{
@@ -112,6 +126,11 @@ static void pdp_ascii_process_yv12(t_pdp_ascii *x)
{
for ( ppx=0; ppx<pwidth; ppx++ )
{
+ if ( ( px+ppx >= x->x_vwidth ) ||
+ ( py+ppy >= x->x_vheight ) )
+ {
+ break;
+ }
pixsum += (data[(py+ppy)*x->x_vwidth + (px+ppx)]>>7);
}
}
@@ -120,12 +139,14 @@ static void pdp_ascii_process_yv12(t_pdp_ascii *x)
{
for ( ppx=0; ppx<pwidth; ppx++ )
{
- if ( ( px+ppx > x->x_vwidth ) ||
- ( py+ppy > x->x_vheight ) )
+ 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))] )
+ offset = rank*x->x_charwidth*x->x_charheight
+ +((int)(ppy/x->x_ratio))*x->x_charwidth+((int)(ppx/x->x_ratio));
+ if ( *(x->x_charmaps+offset) && ( offset < x->x_nbchars*x->x_charwidth*x->x_charheight ) )
{
value = ( (2*rank+x->x_brightness) > 255 ) ? 255 : (2*rank+x->x_brightness);
newdata[(py+ppy)*x->x_vwidth+(px+ppx)] = (value)<<7;
@@ -209,10 +230,113 @@ static void pdp_ascii_free(t_pdp_ascii *x)
{
int i;
+ if ( x->x_charmaps ) free( x->x_charmaps );
pdp_queue_finish(x->x_queue_id);
pdp_packet_mark_unused(x->x_packet0);
}
+ /* load a new charmaps file */
+static void pdp_ascii_load(t_pdp_ascii *x, t_symbol *sfile)
+{
+ char *lineread = (char*) getbytes( LINE_MAX_LENGTH );
+ char *word1 = (char*) getbytes( LINE_MAX_LENGTH );
+ char *word2 = (char*) getbytes( LINE_MAX_LENGTH );
+ char *word3 = (char*) getbytes( LINE_MAX_LENGTH );
+ t_int charwidth, charheight, nbchars, nblines;
+ t_int nbexpdata;
+ char *pdata;
+ char charread;
+
+ // opening new charmaps file
+ if ( ( x->x_filed = fopen( sfile->s_name, "r" ) ) == NULL )
+ {
+ error( "pdp_ascii : cannot open >%s<", sfile->s_name);
+ return;
+ }
+ post( "pdp_ascii : opened >%s<", sfile->s_name);
+
+ // read the new dimensions of the charmaps
+ charwidth = -1;
+ charheight = -1;
+ nbchars = -1;
+ nblines = 0;
+ while ( lineread[0] != '{' )
+ {
+ if ( fgets( lineread, LINE_MAX_LENGTH, x->x_filed ) == 0 )
+ {
+ post( "pdp_ascii : abnormal end of file encountered..." );
+ goto closeandreturn;
+ }
+
+ if ( strncmp( lineread, "#define", 7 ) == 0 )
+ {
+ sscanf( lineread, "%s %s %s", word1, word2, word3 );
+ // post( "pdp_ascii : definition : %s = %s", word2, word3 );
+ if ( !strcmp( word2, "CHARWIDTH" ) )
+ {
+ charwidth = atoi( word3 );
+ }
+ if ( !strcmp( word2, "CHARHEIGHT" ) )
+ {
+ charheight = atoi( word3 );
+ }
+ if ( !strcmp( word2, "NBCHARS" ) )
+ {
+ nbchars = atoi( word3 );
+ }
+ }
+
+ nblines++;
+ if ( nblines>20 ) break;
+ }
+
+ if ( ( charwidth > 0 ) && ( charheight > 0 ) && ( nbchars > 0 ) )
+ {
+ post( "pdp_ascii : new dimensions : %d %dx%d characters", nbchars, charwidth, charheight );
+ if ( x->x_charmaps ) free( x->x_charmaps );
+ x->x_charwidth = charwidth;
+ x->x_charheight = charheight;
+ x->x_nbchars = nbchars;
+ x->x_charmaps = (char*)malloc(x->x_nbchars*x->x_charwidth*x->x_charheight*sizeof(char));
+ }
+ else
+ {
+ post( "pdp_ascii : wrong file format : couldn't read new dimensions" );
+ goto closeandreturn;
+ }
+
+ nbexpdata = nbchars*charwidth*charheight;
+ pdata = x->x_charmaps;
+
+ while ( ( ( charread = fgetc( x->x_filed ) ) != EOF ) && ( nbexpdata > 0 ) )
+ {
+ switch ( charread )
+ {
+ case '0':
+ case '1':
+ *pdata++ = ( charread == '0' )?0:1;
+ nbexpdata--;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+closeandreturn :
+
+ // closing opened file
+ if ( x->x_filed != NULL )
+ {
+ if(fclose(x->x_filed) < 0)
+ {
+ perror( "pdp_ascii : closing file" );
+ }
+ x->x_filed = NULL;
+ return;
+ }
+}
+
t_class *pdp_ascii_class;
void *pdp_ascii_new(void)
@@ -230,6 +354,12 @@ void *pdp_ascii_new(void)
x->x_ratio = 1.;
x->x_brightness = 25;
+ x->x_charwidth = CHARWIDTH;
+ x->x_charheight = CHARHEIGHT;
+ x->x_nbchars = NBCHARS;
+ x->x_charmaps = (char*)malloc(x->x_nbchars*x->x_charwidth*x->x_charheight*sizeof(char));
+ memcpy( (void*)x->x_charmaps, (void*)charmaps, x->x_nbchars*x->x_charwidth*x->x_charheight*sizeof(char) );
+
return (void *)x;
}
@@ -250,6 +380,7 @@ void pdp_ascii_setup(void)
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);
+ class_addmethod( pdp_ascii_class, (t_method)pdp_ascii_load, gensym("load"), A_SYMBOL, 0);
class_sethelpsymbol( pdp_ascii_class, gensym("pdp_ascii.pd") );
}
generated by cgit v1.2.1 (git 2.18.0) at 2025-02-11 03:18:31 +0000