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-rw-r--r--modules/pdp_aa.c324
1 files changed, 324 insertions, 0 deletions
diff --git a/modules/pdp_aa.c b/modules/pdp_aa.c
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--- /dev/null
+++ b/modules/pdp_aa.c
@@ -0,0 +1,324 @@
+/*
+ * 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 interface to aalib ( http://aa-project.sourceforge.net/aalib/ )
+ * converting an image to ASCII art
+ * Written by Yves Degoyon ( ydegoyon@free.fr )
+ */
+
+
+#include "pdp.h"
+#include "yuv.h"
+#include <math.h>
+#include <aalib.h>
+
+#define MAX_OPTIONS 20
+#define MAX_OPTION_LENGTH 20
+
+static char *pdp_aa_version = "pdp_aa: version 0.1, ASCII art output written by ydegoyon@free.fr ";
+
+typedef struct pdp_aa_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;
+
+ /* aalib structures */
+ aa_context *x_context; // a lot of things and image data
+ aa_renderparams x_renderparams; // rendering parameters
+ char* x_driver; // name of driver
+ t_int x_render; // rendering option
+
+ char **x_aa_options; // aa options passed as arguments
+ t_int x_nb_options; // number of aa options
+
+} t_pdp_aa;
+
+static void pdp_aa_allocate(t_pdp_aa *x)
+{
+ if ( !strcmp( x->x_driver, "X11" ) )
+ {
+ x->x_context = aa_init(&X11_d, &aa_defparams, NULL);
+ }
+ else if ( !strcmp( x->x_driver, "slang" ) )
+ {
+ x->x_context = aa_init(&slang_d, &aa_defparams, NULL);
+ }
+ else if ( !strcmp( x->x_driver, "stdout" ) )
+ {
+ x->x_context = aa_init(&stdout_d, &aa_defparams, NULL);
+ }
+ else if ( !strcmp( x->x_driver, "stderr" ) )
+ {
+ x->x_context = aa_init(&stderr_d, &aa_defparams, NULL);
+ }
+ else
+ {
+ post( "pdp_aa : unsupported driver : %s : using X11", x->x_driver );
+ strcpy( x->x_driver, "X11" );
+ pdp_aa_allocate( x );
+ return;
+ }
+
+ if (x->x_context == NULL)
+ {
+ post("pdp_aa : severe error : cannot initialize aalib !!!");
+ return;
+ }
+ else
+ {
+ post("pdp_aa : initialized context");
+ }
+ aa_setfont( x->x_context, &aa_font8 );
+}
+
+static void pdp_aa_free_ressources(t_pdp_aa *x)
+{
+ // if ( x->x_context ) aa_close( x->x_context ); // this crashes unfortunately
+}
+
+static void pdp_aa_render(t_pdp_aa *x, t_floatarg frender)
+{
+ if ( ((int)frender == 0) || ((int)frender == 1) )
+ {
+ x->x_render = (int)frender;
+ }
+}
+
+static void pdp_aa_driver(t_pdp_aa *x, t_symbol *sdriver)
+{
+ if ( ( !strcmp( sdriver->s_name, "X11" ) ) ||
+ ( !strcmp( sdriver->s_name, "slang" ) ) ||
+ ( !strcmp( sdriver->s_name, "stdout" ) ) ||
+ ( !strcmp( sdriver->s_name, "stderr" ) ) )
+ {
+ strcpy( x->x_driver, sdriver->s_name );
+ }
+ else
+ {
+ post( "pdp_aa : unsupported driver : %s : using X11", sdriver->s_name );
+ strcpy( x->x_driver, "X11" );
+ }
+ pdp_aa_free_ressources(x);
+ pdp_aa_allocate(x);
+}
+
+static void pdp_aa_process_yv12(t_pdp_aa *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 hratio, wratio;
+
+ if ( ( (int)header->info.image.width != x->x_vwidth ) ||
+ ( (int)header->info.image.height != x->x_vheight ) )
+ {
+ pdp_aa_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_aa_allocate( x );
+ }
+
+ newheader->info.image.encoding = header->info.image.encoding;
+ newheader->info.image.width = x->x_vwidth;
+ newheader->info.image.height = x->x_vheight;
+
+ if ( aa_imgwidth(x->x_context) < x->x_vwidth )
+ {
+ wratio = x->x_vwidth / aa_imgwidth(x->x_context);
+ }
+ else
+ {
+ wratio = 1;
+ }
+ if ( aa_imgheight(x->x_context) < x->x_vheight )
+ {
+ hratio = x->x_vheight / aa_imgheight(x->x_context);
+ }
+ else
+ {
+ hratio = 1;
+ }
+
+ for(py=1; py<x->x_vheight; py+=hratio)
+ {
+ for(px=0; px<x->x_vwidth; px+=wratio)
+ {
+ pixsum = 0;
+ for ( ppy=0; ppy<hratio; ppy++ )
+ {
+ for ( ppx=0; ppx<wratio; ppx++ )
+ {
+ pixsum += (data[(py+ppy)*x->x_vwidth + (px+ppx)]>>7);
+ }
+ }
+ aa_putpixel(x->x_context, px/wratio, py/hratio, pixsum/(wratio*hratio));
+ }
+ }
+
+ if ( x->x_render )
+ {
+ aa_fastrender(x->x_context, 0, 0, aa_scrwidth(x->x_context), aa_scrheight(x->x_context));
+ aa_flush( x->x_context );
+ }
+
+ // post( "pdp_aa : ascii text : %s", x->x_context->textbuffer );
+
+ memcpy( newdata, data, (x->x_vsize+(x->x_vsize>>1))<<1 );
+
+ return;
+}
+
+static void pdp_aa_sendpacket(t_pdp_aa *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_aa_process(t_pdp_aa *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_aa_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_aa_process_yv12, pdp_aa_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_aa_process */
+ break;
+
+ }
+ }
+
+}
+
+static void pdp_aa_input_0(t_pdp_aa *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_aa_process(x);
+ }
+
+}
+
+static void pdp_aa_free(t_pdp_aa *x)
+{
+ int i;
+
+ pdp_queue_finish(x->x_queue_id);
+ pdp_packet_mark_unused(x->x_packet0);
+ pdp_aa_free_ressources(x);
+ for (i=0; i<MAX_OPTIONS; i++)
+ {
+ if (x->x_aa_options[ i ]) freebytes( x->x_aa_options[ i ], MAX_OPTION_LENGTH );
+ }
+ if (x->x_aa_options) freebytes( x->x_aa_options, MAX_OPTIONS*sizeof(char*) );
+ if (x->x_driver) freebytes( x->x_driver, MAX_OPTION_LENGTH );
+}
+
+t_class *pdp_aa_class;
+
+void *pdp_aa_new(void)
+{
+ int i;
+
+ t_pdp_aa *x = (t_pdp_aa *)pd_new(pdp_aa_class);
+
+ 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_driver = (char*) getbytes( MAX_OPTION_LENGTH );
+ strcpy( x->x_driver, "X11" );
+ x->x_render = 1;
+
+ // aa_setsupported( x->x_context, AA_EXTENDED );
+ x->x_aa_options = (char **) getbytes( MAX_OPTIONS*sizeof(char*) );
+ for (i=0; i<MAX_OPTIONS; i++)
+ {
+ x->x_aa_options[ i ] = (char*) getbytes( MAX_OPTION_LENGTH );
+ }
+
+ return (void *)x;
+}
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+void pdp_aa_setup(void)
+{
+ post( pdp_aa_version );
+ pdp_aa_class = class_new(gensym("pdp_aa"), (t_newmethod)pdp_aa_new,
+ (t_method)pdp_aa_free, sizeof(t_pdp_aa), 0, A_NULL);
+
+ class_addmethod(pdp_aa_class, (t_method)pdp_aa_input_0, gensym("pdp"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+ class_addmethod(pdp_aa_class, (t_method)pdp_aa_driver, gensym("driver"), A_SYMBOL, A_NULL);
+ class_addmethod(pdp_aa_class, (t_method)pdp_aa_render, gensym("render"), A_FLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-29 13:21:17 +0000