1 /* -*- indent-tabs-mode:nil -*-
2 * Copyright (c) 2007 Jeremy English <jhe@jeremyenglish.org>
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation. No representations are made about the suitability of this
9 * software for any purpose. It is provided "as is" without express or
12 * Created: 07-May-2007
18 #if defined(HAVE_STDINT_H)
20 #elif defined(HAVE_INTTYPES_H)
24 #include "screenhack.h"
29 __extension__ /* don't warn about "string length is greater than the length
30 ISO C89 compilers are required to support" when includng
31 the following data file... */
33 static const char * const demo_files[] = {
43 /* We want to paint on a 32 by 32 grid of pixels. We will needed to
44 divided the screen up into chuncks */
46 SCREEN_W = ANALOGTV_VIS_LEN,
47 SCREEN_H = ANALOGTV_VISLINES,
57 machine_6502 *machine;
61 analogtv_reception reception;
62 int pixw; /* pixel width */
63 int pixh;/* pixel height */
64 int topb;/* top boarder */
65 int field_ntsc[4];/* used for clearing the screen*/
66 int dt;/* how long to wait before changing the demo*/
67 int which;/* the program to run*/
68 int demos;/* number of demos included */
69 struct timeval start_time;
74 plot6502(Bit8 x, Bit8 y, Bit8 color, void *closure)
76 struct state *st = (struct state *) closure;
77 st->pixels[x][y] = color;
81 #define countof(x) (sizeof((x))/sizeof((*x)))
85 start_rand_bin_prog(machine_6502 *machine, struct state *st){
88 n = random() % st->demos;
90 m6502_start_eval_string(machine, demo_files[st->which], plot6502, st);
97 * returns the total time elapsed since the beginning of the demo
99 static double get_time(struct state *st) {
102 #if GETTIMEOFDAY_TWO_ARGS
103 gettimeofday(&t, NULL);
107 t.tv_sec -= st->start_time.tv_sec;
108 f = ((double)t.tv_sec) + t.tv_usec*1e-6;
115 * initialises the timing structures
117 static void init_time(struct state *st) {
118 #if GETTIMEOFDAY_TWO_ARGS
119 gettimeofday(&st->start_time, NULL);
121 gettimeofday(&st->start_time);
126 m6502_init (Display *dpy, Window window)
128 struct state *st = (struct state *) calloc (1, sizeof(*st));
130 int n = get_integer_resource(dpy, "displaytime", "Displaytime");
132 st->demos = countof(demo_files);
133 st->which = random() % st->demos;
137 st->tv=analogtv_allocate(st->dpy, st->window);
138 analogtv_set_defaults(st->tv, "");
140 st->machine = m6502_build();
141 st->inp=analogtv_input_allocate();
142 analogtv_setup_sync(st->inp, 1, 0);
144 st->reception.input = st->inp;
145 st->reception.level = 2.0;
148 st->reception.multipath=0.0;
149 st->pixw = SCREEN_W / 32;
150 st->pixh = SCREEN_H / 32;
158 char *s = get_string_resource (dpy, "file", "File");
160 m6502_start_eval_file(st->machine,s, plot6502, st);
163 start_rand_bin_prog(st->machine,st);
166 analogtv_lcp_to_ntsc(ANALOGTV_BLACK_LEVEL, 0.0, 0.0, st->field_ntsc);
168 analogtv_draw_solid(st->inp,
169 ANALOGTV_VIS_START, ANALOGTV_VIS_END,
170 ANALOGTV_TOP, ANALOGTV_BOT,
173 for(x = 0; x < 32; x++)
174 for(y = 0; y < 32; y++)
175 st->pixels[x][y] = 0;
181 paint_pixel(struct state *st, int x, int y, int idx)
183 double clr_tbl[16][3] = {
203 /* RGB conversion taken from analogtv draw xpm */
204 rawy=( 5*clr_tbl[idx][0] + 11*clr_tbl[idx][1] + 2*clr_tbl[idx][2]) / 64;
205 rawi=(10*clr_tbl[idx][0] - 4*clr_tbl[idx][1] - 5*clr_tbl[idx][2]) / 64;
206 rawq=( 3*clr_tbl[idx][0] - 8*clr_tbl[idx][1] + 5*clr_tbl[idx][2]) / 64;
213 for (i=0; i<4; i++) {
214 if (ntsc[i]>ANALOGTV_WHITE_LEVEL) ntsc[i]=ANALOGTV_WHITE_LEVEL;
215 if (ntsc[i]<ANALOGTV_BLACK_LEVEL) ntsc[i]=ANALOGTV_BLACK_LEVEL;
222 analogtv_draw_solid(st->inp,
223 ANALOGTV_VIS_START + x, ANALOGTV_VIS_START + x + st->pixw,
224 ANALOGTV_TOP + y, ANALOGTV_TOP + y + st->pixh, ntsc);
228 m6502_draw (Display *dpy, Window window, void *closure)
230 struct state *st = (struct state *) closure;
231 unsigned int x = 0, y = 0;
233 const analogtv_reception *reception = &st->reception;
235 m6502_next_eval(st->machine,500);
237 for (x = 0; x < 32; x++)
238 for (y = 0; y < 32; y++)
239 paint_pixel(st,x,y,st->pixels[x][y]);
241 analogtv_reception_update(&st->reception);
242 analogtv_draw(st->tv, 0.04, &reception, 1);
245 if (st->reset_p || te > st->dt){ /* do something more interesting here XXX */
247 for(x = 0; x < 32; x++)
248 for(y = 0; y < 32; y++)
249 st->pixels[x][y] = 0;
251 start_rand_bin_prog(st->machine,st);
264 static const char *m6502_defaults [] = {
265 ".background: black",
266 ".foreground: white",
273 static XrmOptionDescRec m6502_options [] = {
274 { "-file", ".file", XrmoptionSepArg, 0 },
275 { "-displaytime", ".displaytime", XrmoptionSepArg, 0},
281 m6502_reshape (Display *dpy, Window window, void *closure,
282 unsigned int w, unsigned int h)
284 struct state *st = (struct state *) closure;
285 analogtv_reconfigure (st->tv);
289 m6502_event (Display *dpy, Window window, void *closure, XEvent *event)
291 struct state *st = (struct state *) closure;
292 if (screenhack_event_helper (dpy, window, event))
301 m6502_free (Display *dpy, Window window, void *closure)
303 struct state *st = (struct state *) closure;
304 analogtv_release(st->tv);
308 XSCREENSAVER_MODULE ("m6502", m6502)