From c5e843b82205c04c618a423d3bb223f1f630b7a1 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Mon, 11 Aug 2003 04:26:00 +0000 Subject: added sources from pidip-0.12.4 svn path=/trunk/externals/pidip/; revision=837 --- modules/pdp_aa.c | 324 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 324 insertions(+) create mode 100644 modules/pdp_aa.c (limited to 'modules/pdp_aa.c') diff --git a/modules/pdp_aa.c b/modules/pdp_aa.c new file mode 100644 index 0000000..ee159f9 --- /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 +#include + +#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; pyx_vheight; py+=hratio) + { + for(px=0; pxx_vwidth; px+=wratio) + { + pixsum = 0; + for ( ppy=0; ppyx_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; ix_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; ix_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 -- cgit v1.2.1