/* 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;
char *s;
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);
s = get_string_resource (dpy, "numberFont", "Font");
st->font = load_xft_font_retry (dpy, screen_number (st->xgwa.screen), s);
if (s) free (s);
s = get_string_resource (dpy, "numberFont2", "Font");
st->font2 = load_xft_font_retry (dpy, screen_number (st->xgwa.screen), s);
if (s) free (s);
s = get_string_resource (dpy, "numberFont3", "Font");
st->font3 = load_xft_font_retry (dpy, screen_number (st->xgwa.screen), s);
if (s) free (s);
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");
s = get_string_resource (dpy, "textColor", "Foreground");
XftColorAllocName (dpy, st->xgwa.visual, st->xgwa.colormap, s,
&st->xft_text_color_1);
if (s) free (s);
s = get_string_resource (dpy, "textBackground", "Background");
XftColorAllocName (dpy, st->xgwa.visual, st->xgwa.colormap, s,
&st->xft_text_color_2);
if (s) free (s);
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);
free (st->inp);
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)