X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=xscreensaver;a=blobdiff_plain;f=hacks%2Ffilmleader.c;fp=hacks%2Ffilmleader.c;h=ef021e1a7ecbec84f6063b19163e1a846eaee5e2;hp=0000000000000000000000000000000000000000;hb=c85f503f5793839a6be4c818332aca4a96927bb2;hpb=78add6e627ee5f10e1fa6f3852602ea5066eee5a

diff --git a/hacks/filmleader.c b/hacks/filmleader.c
new file mode 100644
index 00000000..ef021e1a
--- /dev/null
+++ b/hacks/filmleader.c
@@ -0,0 +1,571 @@
+/* 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)