--- /dev/null
+/* filmleader, Copyright (c) 2018 Jamie Zawinski <jwz@jwz.org>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * Simulate an SMPTE Universal Film Leader playing on an analog television.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include "xft.h" /* before screenhack.h */
+
+#include "screenhack.h"
+#include "analogtv.h"
+
+#include <time.h>
+
+#undef countof
+#define countof(x) (sizeof((x))/sizeof((*x)))
+
+struct state {
+ Display *dpy;
+ Window window;
+ XWindowAttributes xgwa;
+ int w, h;
+ unsigned long bg, text_color, ring_color, trace_color;
+ XftColor xft_text_color_1, xft_text_color_2;
+
+ XftFont *font, *font2, *font3;
+ XftDraw *xftdraw;
+ Pixmap pix;
+ GC gc;
+ double start, last_time;
+ double value;
+ int stop;
+ double noise;
+ analogtv *tv;
+ analogtv_input *inp;
+ analogtv_reception rec;
+ Bool button_down_p;
+};
+
+
+static void *
+filmleader_init (Display *dpy, Window window)
+{
+ struct state *st = (struct state *) calloc (1, sizeof(*st));
+ XGCValues gcv;
+
+ st->dpy = dpy;
+ st->window = window;
+ st->tv = analogtv_allocate (st->dpy, st->window);
+ analogtv_set_defaults (st->tv, "");
+ st->tv->need_clear = 1;
+ st->inp = analogtv_input_allocate();
+ analogtv_setup_sync (st->inp, 1, 0);
+ st->rec.input = st->inp;
+ st->rec.level = 2.0;
+ st->tv->use_color = 1;
+ st->rec.level = pow(frand(1.0), 3.0) * 2.0 + 0.05;
+ st->rec.ofs = random() % ANALOGTV_SIGNAL_LEN;
+ st->tv->powerup = 0;
+
+ st->rec.multipath = 0.0;
+ st->tv->color_control += frand(0.3);
+ st->noise = get_float_resource (st->dpy, "noise", "Float");
+ st->value = 18; /* Leave time for powerup */
+ st->stop = 2 + (random() % 5);
+ XGetWindowAttributes (dpy, window, &st->xgwa);
+
+ /* Let's render it into a 16:9 pixmap, since that's what most screens are
+ these days. That means the circle will be squashed on 4:3 screens. */
+ {
+ double r = 16/9.0;
+
+# ifdef HAVE_MOBILE
+ /* analogtv.c always fills whole screen on mobile, so use screen aspect. */
+ r = st->xgwa.width / (double) st->xgwa.height;
+ if (r < 1) r = 1/r;
+# endif
+
+ st->w = 712;
+ st->h = st->w / r;
+ }
+
+ if (st->xgwa.width < st->xgwa.height)
+ {
+ int swap = st->w;
+ st->w = st->h;
+ st->h = swap;
+ }
+
+ st->pix = XCreatePixmap (dpy, window,
+ st->w > st->h ? st->w : st->h,
+ st->w > st->h ? st->w : st->h,
+ st->xgwa.depth);
+ st->gc = XCreateGC (dpy, st->pix, 0, &gcv);
+
+ st->xftdraw = XftDrawCreate (dpy, st->pix, st->xgwa.visual,
+ st->xgwa.colormap);
+ st->font = load_xft_font_retry (dpy, screen_number (st->xgwa.screen),
+ get_string_resource (dpy, "numberFont",
+ "Font"));
+ st->font2 = load_xft_font_retry (dpy, screen_number (st->xgwa.screen),
+ get_string_resource (dpy, "numberFont2",
+ "Font"));
+ st->font3 = load_xft_font_retry (dpy, screen_number (st->xgwa.screen),
+ get_string_resource (dpy, "numberFont3",
+ "Font"));
+
+ st->bg = get_pixel_resource (dpy, st->xgwa.colormap,
+ "textBackground", "Background");
+ st->text_color = get_pixel_resource (dpy, st->xgwa.colormap,
+ "textColor", "Foreground");
+ st->ring_color = get_pixel_resource (dpy, st->xgwa.colormap,
+ "ringColor", "Foreground");
+ st->trace_color = get_pixel_resource (dpy, st->xgwa.colormap,
+ "traceColor", "Foreground");
+
+ XftColorAllocName (dpy, st->xgwa.visual, st->xgwa.colormap,
+ get_string_resource (dpy, "textColor", "Foreground"),
+ &st->xft_text_color_1);
+ XftColorAllocName (dpy, st->xgwa.visual, st->xgwa.colormap,
+ get_string_resource (dpy, "textBackground", "Background"),
+ &st->xft_text_color_2);
+
+ return st;
+}
+
+
+static double
+double_time (void)
+{
+ struct timeval now;
+# ifdef GETTIMEOFDAY_TWO_ARGS
+ struct timezone tzp;
+ gettimeofday(&now, &tzp);
+# else
+ gettimeofday(&now);
+# endif
+
+ return (now.tv_sec + ((double) now.tv_usec * 0.000001));
+}
+
+
+static unsigned long
+filmleader_draw (Display *dpy, Window window, void *closure)
+{
+ struct state *st = (struct state *) closure;
+ const analogtv_reception *rec = &st->rec;
+ double then = double_time(), now, timedelta;
+ XImage *img;
+ int i, x, y, w2, h2;
+ XGlyphInfo extents;
+ int lbearing, rbearing, ascent, descent;
+ char s[20];
+ double r = 1 - (st->value - (int) st->value);
+ int ivalue = st->value;
+ XftFont *xftfont;
+ XftColor *xftcolor;
+
+ /* You may ask, why use Xft for this instead of the much simpler XDrawString?
+ Well, for some reason, XLoadQueryFont is giving me horribly-scaled bitmap
+ fonts, but Xft works properly. So perhaps in This Modern World, if one
+ expects large fonts to work, one must use Xft instead of Xlib?
+
+ Everything is terrible.
+ */
+
+ const struct { double t; int k, f; const char * const s[4]; } blurbs[] = {
+ { 9.1, 3, 1, { "PICTURE", " START", 0, 0 }},
+ { 10.0, 2, 1, { " 16", "SOUND", "START", 0 }},
+ { 10.5, 2, 1, { " 32", "SOUND", "START", 0 }},
+ { 11.6, 2, 0, { "PICTURE", "COMPANY", "SERIES", 0 }},
+ { 11.7, 2, 0, { "XSCRNSAVER", 0, 0, 0 }},
+ { 11.9, 2, 0, { "REEL No.", "PROD No.", "PLAY DATE", 0 }},
+ { 12.2, 0, 0, { " SMPTE ", "UNIVERSAL", " LEADER", 0 }},
+ { 12.3, 0, 1, { "X ", "X", "X", "X" }},
+ { 12.4, 0, 0, { " SMPTE ", "UNIVERSAL", " LEADER", 0 }},
+ { 12.5, 3, 1, { "PICTURE", 0, 0, 0 }},
+ { 12.7, 3, 1, { "HEAD", 0, 0, 0 }},
+ { 12.8, 2, 1, { "OOOO", 0, "ASPECT", "TYPE OF" }},
+ { 12.9, 2, 0, { "SOUND", 0, "RATIO", 0 }},
+ { 13.2, 1, 1, { " ", "PICTURE", 0, 0 }},
+ { 13.3, 1, 0, { "REEL No. ", "COLOR", 0, 0 }},
+ { 13.4, 1, 0, { "LENGTH ", 0, 0, "ROLL" }},
+ { 13.5, 1, 0, { "SUBJECT", 0, 0, 0 }},
+ { 13.9, 1, 1, { " \342\206\221", "SPLICE", " HERE", 0 }},
+ };
+
+ for (i = 0; i < countof(blurbs); i++)
+ {
+ if (st->value >= blurbs[i].t && st->value <= blurbs[i].t + 1/15.0)
+ {
+ int line_height;
+ int j;
+ xftfont = (blurbs[i].f == 1 ? st->font2 :
+ blurbs[i].f == 2 ? st->font : st->font3);
+
+ XSetForeground (dpy, st->gc,
+ blurbs[i].k == 3 ? st->bg : st->text_color);
+ XFillRectangle (dpy, st->pix, st->gc, 0, 0, st->w, st->h);
+ XSetForeground (dpy, st->gc,
+ blurbs[i].k == 3 ? st->text_color : st->bg);
+ xftcolor = (blurbs[i].k == 3 ?
+ &st->xft_text_color_1 : &st->xft_text_color_2);
+
+ /* The height of a string of spaces is 0... */
+ XftTextExtentsUtf8 (dpy, xftfont, (FcChar8 *) "My", 2, &extents);
+ line_height = extents.height;
+
+ XftTextExtentsUtf8 (dpy, xftfont, (FcChar8 *)
+ blurbs[i].s[0], strlen(blurbs[i].s[0]),
+ &extents);
+ lbearing = -extents.x;
+ rbearing = extents.width - extents.x;
+ ascent = extents.y;
+ descent = extents.height - extents.y;
+
+ x = (st->w - rbearing) / 2;
+ y = st->h * 0.1 + ascent;
+
+ for (j = 0; j < countof(blurbs[i].s); j++)
+ {
+ if (blurbs[i].s[j])
+ XftDrawStringUtf8 (st->xftdraw, xftcolor, xftfont, x, y,
+ (FcChar8 *) blurbs[i].s[j],
+ strlen(blurbs[i].s[j]));
+
+ y += line_height * 1.5;
+
+ if (blurbs[i].s[j])
+ {
+ XftTextExtentsUtf8 (dpy, xftfont, (FcChar8 *)
+ blurbs[i].s[0], strlen(blurbs[i].s[j]),
+ &extents);
+ lbearing = -extents.x;
+ rbearing = extents.width - extents.x;
+ ascent = extents.y;
+ descent = extents.height - extents.y;
+ }
+ }
+
+ if (blurbs[i].k == 2) /* Rotate clockwise and flip */
+ {
+ int wh = st->w < st->h ? st->w : st->h;
+ XImage *img1 = XGetImage (dpy, st->pix,
+ (st->w - wh) / 2,
+ (st->h - wh) / 2,
+ wh, wh, ~0L, ZPixmap);
+ XImage *img2 = XCreateImage (dpy, st->xgwa.visual,
+ st->xgwa.depth, ZPixmap, 0, 0,
+ wh, wh, 32, 0);
+ img2->data = malloc (img2->bytes_per_line * img2->height);
+ for (y = 0; y < wh; y++)
+ for (x = 0; x < wh; x++)
+ XPutPixel (img2, y, x, XGetPixel (img1, x, y));
+ XSetForeground (dpy, st->gc,
+ blurbs[i].k == 3 ? st->bg : st->text_color);
+ XFillRectangle (dpy, st->pix, st->gc, 0, 0, st->w, st->h);
+ XPutImage (dpy, st->pix, st->gc, img2,
+ 0, 0,
+ (st->w - wh) / 2,
+ (st->h - wh) / 2,
+ wh, wh);
+ XDestroyImage (img1);
+ XDestroyImage (img2);
+ }
+ else if (blurbs[i].k == 1) /* Flip vertically */
+ {
+ XImage *img1 = XGetImage (dpy, st->pix, 0, 0,
+ st->w, st->h, ~0L, ZPixmap);
+ XImage *img2 = XCreateImage (dpy, st->xgwa.visual,
+ st->xgwa.depth, ZPixmap, 0, 0,
+ st->w, st->h, 32, 0);
+ img2->data = malloc (img2->bytes_per_line * img2->height);
+ for (y = 0; y < img2->height; y++)
+ for (x = 0; x < img2->width; x++)
+ XPutPixel (img2, x, img2->height-y-1,
+ XGetPixel (img1, x, y));
+ XPutImage (dpy, st->pix, st->gc, img2, 0, 0, 0, 0, st->w, st->h);
+ XDestroyImage (img1);
+ XDestroyImage (img2);
+ }
+
+ goto DONE;
+ }
+ }
+
+ if (st->value < 2.0 || st->value >= 9.0) /* Black screen */
+ {
+ XSetForeground (dpy, st->gc, st->text_color);
+ XFillRectangle (dpy, st->pix, st->gc, 0, 0, st->w, st->h);
+ goto DONE;
+ }
+
+ XSetForeground (dpy, st->gc, st->bg);
+ XFillRectangle (dpy, st->pix, st->gc, 0, 0, st->w, st->h);
+
+ if (r > 1/30.0) /* Sweep line and background */
+ {
+ x = st->w/2 + st->w * cos (M_PI * 2 * r - M_PI/2);
+ y = st->h/2 + st->h * sin (M_PI * 2 * r - M_PI/2);
+
+ XSetForeground (dpy, st->gc, st->trace_color);
+ XFillArc (dpy, st->pix, st->gc,
+ -st->w, -st->h, st->w*3, st->h*3,
+ 90*64,
+ 90*64 - ((r + 0.25) * 360*64));
+
+ XSetForeground (dpy, st->gc, st->text_color);
+ XSetLineAttributes (dpy, st->gc, 1, LineSolid, CapRound, JoinRound);
+ XDrawLine (dpy, st->pix, st->gc, st->w/2, st->h/2, x, y);
+
+ XSetForeground (dpy, st->gc, st->text_color);
+ XSetLineAttributes (dpy, st->gc, 2, LineSolid, CapRound, JoinRound);
+ XDrawLine (dpy, st->pix, st->gc, st->w/2, 0, st->w/2, st->h);
+ XDrawLine (dpy, st->pix, st->gc, 0, st->h/2, st->w, st->h/2);
+ }
+
+ /* Big number */
+
+ s[0] = (char) (ivalue + '0');
+ xftfont = st->font;
+ xftcolor = &st->xft_text_color_1;
+ XftTextExtentsUtf8 (dpy, xftfont, (FcChar8 *) s, 1, &extents);
+ lbearing = -extents.x;
+ rbearing = extents.width - extents.x;
+ ascent = extents.y;
+ descent = extents.height - extents.y;
+
+ x = (st->w - (rbearing + lbearing)) / 2;
+ y = (st->h + (ascent - descent)) / 2;
+ XftDrawStringUtf8 (st->xftdraw, xftcolor, xftfont, x, y, (FcChar8 *) s, 1);
+
+ /* Annotations on 7 and 4 */
+
+ if ((st->value >= 7.75 && st->value <= 7.85) ||
+ (st->value >= 4.00 && st->value <= 4.25))
+ {
+ XSetForeground (dpy, st->gc, st->ring_color);
+ xftcolor = &st->xft_text_color_2;
+ xftfont = st->font2;
+
+ s[0] = (ivalue == 4 ? 'C' : 'M');
+ s[1] = 0;
+
+ XftTextExtentsUtf8 (dpy, xftfont, (FcChar8 *) s, strlen(s), &extents);
+ lbearing = -extents.x;
+ rbearing = extents.width - extents.x;
+ ascent = extents.y;
+ descent = extents.height - extents.y;
+
+ x = st->w * 0.1;
+ y = st->h * 0.1 + ascent;
+ XftDrawStringUtf8 (st->xftdraw, xftcolor, xftfont, x, y,
+ (FcChar8 *) s, strlen(s));
+ x = st->w * 0.9 - (rbearing + lbearing);
+ XftDrawStringUtf8 (st->xftdraw, xftcolor, xftfont, x, y,
+ (FcChar8 *) s, strlen(s));
+
+ s[0] = (ivalue == 4 ? 'F' : '3');
+ s[1] = (ivalue == 4 ? 0 : '5');
+ s[2] = 0;
+
+ XftTextExtentsUtf8 (dpy, xftfont, (FcChar8 *) s, strlen(s), &extents);
+ lbearing = -extents.x;
+ rbearing = extents.width - extents.x;
+ ascent = extents.y;
+ descent = extents.height - extents.y;
+
+ x = st->w * 0.1;
+ y = st->h * 0.95;
+ XftDrawStringUtf8 (st->xftdraw, xftcolor, xftfont, x, y,
+ (FcChar8 *) s, strlen(s));
+ x = st->w * 0.9 - (rbearing + lbearing);
+ XftDrawStringUtf8 (st->xftdraw, xftcolor, xftfont, x, y,
+ (FcChar8 *) s, strlen(s));
+ }
+
+ if (r > 1/30.0) /* Two rings around number */
+ {
+ double r2 = st->w / (double) st->h;
+ double ss = 1;
+
+ if (st->xgwa.width < st->xgwa.height)
+ ss = 0.5;
+
+ XSetForeground (dpy, st->gc, st->ring_color);
+ XSetLineAttributes (dpy, st->gc, st->w * 0.025,
+ LineSolid, CapRound, JoinRound);
+
+ w2 = st->w * 0.8 * ss / r2;
+ h2 = st->h * 0.8 * ss;
+ x = (st->w - w2) / 2;
+ y = (st->h - h2) / 2;
+ XDrawArc (dpy, st->pix, st->gc, x, y, w2, h2, 0, 360*64);
+
+ w2 = w2 * 0.8;
+ h2 = h2 * 0.8;
+ x = (st->w - w2) / 2;
+ y = (st->h - h2) / 2;
+ XDrawArc (dpy, st->pix, st->gc, x, y, w2, h2, 0, 360*64);
+ }
+
+ DONE:
+
+ img = XGetImage (dpy, st->pix, 0, 0, st->w, st->h, ~0L, ZPixmap);
+
+ analogtv_load_ximage (st->tv, st->rec.input, img, 0, 0, 0, 0, 0);
+ analogtv_reception_update (&st->rec);
+ analogtv_draw (st->tv, st->noise, &rec, 1);
+
+ XDestroyImage (img);
+
+ now = double_time();
+ timedelta = (1 / 29.97) - (now - then);
+
+ if (! st->button_down_p)
+ {
+ if (st->last_time == 0)
+ st->start = then;
+ else
+ st->value -= then - st->last_time;
+
+ if (st->value <= 0 ||
+ (r > 0.9 && st->value <= st->stop))
+ {
+ st->value = (random() % 20) ? 8.9 : 15;
+ st->stop = ((random() % 50) ? 2 : 1) + (random() % 5);
+
+ if (st->value > 9) /* Spin the knobs again */
+ {
+ st->rec.level = pow(frand(1.0), 3.0) * 2.0 + 0.05;
+ st->rec.ofs = random() % ANALOGTV_SIGNAL_LEN;
+ st->tv->color_control += frand(0.3) - 0.15;
+ }
+ }
+ }
+
+ st->tv->powerup = then - st->start;
+ st->last_time = then;
+
+ return timedelta > 0 ? timedelta * 1000000 : 0;
+}
+
+
+static void
+filmleader_reshape (Display *dpy, Window window, void *closure,
+ unsigned int w, unsigned int h)
+{
+ struct state *st = (struct state *) closure;
+ analogtv_reconfigure (st->tv);
+ XGetWindowAttributes (dpy, window, &st->xgwa);
+
+ if ((st->w > st->h) != (st->xgwa.width > st->xgwa.height))
+ {
+ int swap = st->w;
+ st->w = st->h;
+ st->h = swap;
+ }
+}
+
+
+static Bool
+filmleader_event (Display *dpy, Window window, void *closure, XEvent *event)
+{
+ struct state *st = (struct state *) closure;
+ if (event->xany.type == ButtonPress)
+ {
+ st->button_down_p = True;
+ return True;
+ }
+ else if (event->xany.type == ButtonRelease)
+ {
+ st->button_down_p = False;
+ return True;
+ }
+ else if (screenhack_event_helper (dpy, window, event))
+ {
+ st->value = 15;
+ st->rec.level = pow(frand(1.0), 3.0) * 2.0 + 0.05;
+ st->rec.ofs = random() % ANALOGTV_SIGNAL_LEN;
+ st->tv->color_control += frand(0.3) - 0.15;
+ return True;
+ }
+ else if (event->xany.type == KeyPress)
+ {
+ KeySym keysym;
+ char c = 0;
+ XLookupString (&event->xkey, &c, 1, &keysym, 0);
+ if (c >= '2' && c <= '8')
+ {
+ st->value = (c - '0') + (st->value - (int) st->value);
+ return True;
+ }
+ }
+
+ return False;
+}
+
+
+static void
+filmleader_free (Display *dpy, Window window, void *closure)
+{
+ struct state *st = (struct state *) closure;
+ analogtv_release (st->tv);
+ XftDrawDestroy (st->xftdraw);
+ XftColorFree(dpy, st->xgwa.visual, st->xgwa.colormap, &st->xft_text_color_1);
+ XftColorFree(dpy, st->xgwa.visual, st->xgwa.colormap, &st->xft_text_color_2);
+ XFreePixmap (dpy, st->pix);
+ XFreeGC (dpy, st->gc);
+ free (st);
+}
+
+
+static const char *filmleader_defaults [] = {
+
+ ".background: #000000",
+
+# ifdef HAVE_MOBILE
+
+ "*textBackground: #444488", /* Need much higher contrast for some reason */
+ "*textColor: #000033",
+ "*ringColor: #DDDDFF",
+ "*traceColor: #222244",
+
+# else /* X11 or Cocoa */
+
+ "*textBackground: #9999DD",
+ "*textColor: #000015",
+ "*ringColor: #DDDDFF",
+ "*traceColor: #555577",
+
+# endif
+
+# ifdef USE_IPHONE
+
+ "*numberFont: Helvetica Bold 120",
+ "*numberFont2: Helvetica 36",
+ "*numberFont3: Helvetica 28",
+
+# else /* X11, Cocoa or Android */
+
+ "*numberFont: -*-helvetica-bold-r-*-*-*-1700-*-*-*-*-*-*",
+ "*numberFont2: -*-helvetica-medium-r-*-*-*-500-*-*-*-*-*-*",
+ "*numberFont3: -*-helvetica-medium-r-*-*-*-360-*-*-*-*-*-*",
+
+# endif
+
+
+ "*noise: 0.04",
+ ANALOGTV_DEFAULTS
+ "*geometry: 1280x720",
+ 0
+};
+
+static XrmOptionDescRec filmleader_options [] = {
+ { "-noise", ".noise", XrmoptionSepArg, 0 },
+ ANALOGTV_OPTIONS
+ { 0, 0, 0, 0 }
+};
+
+XSCREENSAVER_MODULE ("FilmLeader", filmleader)
projects / xscreensaver / blobdiff