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-rwxr-xr-xx11vnc/misc/ranfb.pl157
1 files changed, 0 insertions, 157 deletions
diff --git a/x11vnc/misc/ranfb.pl b/x11vnc/misc/ranfb.pl
deleted file mode 100755
index d6aa49d..0000000
--- a/x11vnc/misc/ranfb.pl
+++ /dev/null
@@ -1,157 +0,0 @@
- #!/bin/sh -- # A comment mentioning perl
-eval 'exec perl -S $0 ${1+"$@"}'
- if 0;
-
-# ranfb.pl: example -rawfb setup program.
-# E.g. x11vnc -rawfb setup:./ranfb.pl
-
-# can supply WxH or W H on cmd line:
-if ($ARGV[0] =~ /^(\d+)x(\d+)$/) {
- $W = $1;
- $H = $2;
-} else {
- $W = shift;
- $H = shift;
-}
-
-$W = 480 unless $W;
-$H = 360 unless $H;
-
-$fb = "/tmp/ranfb.$$";
-open(FB, ">$fb") || die "$!";
-
-$ones = "\377" x ($W * 4);
-for ($y = 0; $y < $H; $y++) {
- print FB $ones;
-}
-
-if (fork) {
- print "map:$fb\@${W}x${H}x32\n";
- exit 0;
-}
-
-srand();
-while (1) {
- showpic();
- if (! kill 0, $ENV{X11VNC_PID}) {
- print STDERR "PID $ENV{X11VNC_PID} gone\n";
- unlink($fb);
- exit;
- }
-}
-
-sub showpic {
-
- # 0 < x,y < 1; R1, R2, ... B4 random & scaled so R,G,B < 255:
- # R(x,y) = R1 + R2 * x + R3 * y + R4 * x * y
- # G(x,y) = G1 + G2 * x + G3 * y + G4 * x * y
- # B(x,y) = B1 + B2 * x + B3 * y + B4 * x * y
-
- $minfac = 0.25;
- foreach $c ('R', 'G', 'B') {
- $a1 = rand() * $minfac;
- $a2 = rand();
- $a3 = rand();
- $a4 = rand();
- $at = $a1 + $a2 + $a3 + $a4;
- $a1 = 255 * ($a1/$at);
- $a2 = 255 * ($a2/$at);
- $a3 = 255 * ($a3/$at);
- $a4 = 255 * ($a4/$at);
- # invert axes randomly
- $ax = 0; $ax = 1 if rand() < 0.5;
- $ay = 0; $ay = 1 if rand() < 0.5;
- eval "\$${c}1 = \$a1";
- eval "\$${c}2 = \$a2";
- eval "\$${c}3 = \$a3";
- eval "\$${c}4 = \$a4";
- eval "\$${c}x = \$ax";
- eval "\$${c}y = \$ay";
- }
-
- for ($i = 0; $i < 256; $i++) {
- $p[$i] = pack("c", $i);
- }
-
- $Winv = 1.0/$W;
- $Hinv = 1.0/$H;
-
- $str = '';
- for ($y = 0; $y < $H; $y++) {
- $yr = $yg = $yb = $y;
- $yr = $H - $yr if $Ry;
- $yg = $H - $yg if $Gy;
- $yb = $H - $yb if $By;
- $yr = $yr * $Hinv;
- $yg = $yg * $Hinv;
- $yb = $yb * $Hinv;
-
- $Y[3*$y+0] = $yr;
- $Y[3*$y+1] = $yg;
- $Y[3*$y+2] = $yb;
- }
-
- for ($x = 0; $x < $W; $x++) {
- $xr = $xg = $xb = $x;
- $xr = $W - $xr if $Rx;
- $xg = $W - $xg if $Gx;
- $xb = $W - $xb if $Bx;
- $xr = $xr * $Winv;
- $xg = $xg * $Winv;
- $xb = $xb * $Winv;
-
- $X[3*$x+0] = $xr;
- $X[3*$x+1] = $xg;
- $X[3*$x+2] = $xb;
- }
-
- for ($y = 0; $y < $H; $y++) {
- #$yr = $yg = $yb = $y;
- #$yr = $H - $yr if $Ry;
- #$yg = $H - $yg if $Gy;
- #$yb = $H - $yb if $By;
- #$yr = $yr * $Hinv;
- #$yg = $yg * $Hinv;
- #$yb = $yb * $Hinv;
-
- $yr = $Y[3*$y+0];
- $yg = $Y[3*$y+1];
- $yb = $Y[3*$y+2];
-
- $RY1 = $R1 + $yr * $R3;
- $GY1 = $G1 + $yg * $G3;
- $BY1 = $B1 + $yb * $B3;
-
- $RY2 = $R2 + $yr * $R4;
- $GY2 = $G2 + $yg * $G4;
- $BY2 = $B2 + $yb * $B4;
-
- for ($x = 0; $x < $W; $x++) {
- #$xr = $xg = $xb = $x;
- #$xr = $W - $xr if $Rx;
- #$xg = $W - $xg if $Gx;
- #$xb = $W - $xb if $Bx;
- #$xr = $xr * $Winv;
- #$xg = $xg * $Winv;
- #$xb = $xb * $Winv;
-
- $n = 3 * $x;
-
- #$v = int($R1 + $xr*$R2 + $yr*$R3 + $xr*$yr*$R4);
- $v = int($RY1 + $X[$n]*$RY2);
- $str .= $p[$v];
-
- #$v = int($G1 + $xg*$G2 + $yg*$G3 + $xg*$yg*$G4);
- $v = int($GY1 + $X[$n+1]*$GY2);
- $str .= $p[$v];
-
- #$v = int($B1 + $xb*$B2 + $yb*$B3 + $xb*$yb*$B4);
- $v = int($BY1 + $X[$n+2]*$BY2);
- $str .= $p[$v];
-
- $str .= "\0";
- }
- }
- seek(FB, 0, 0);
- print FB $str;
-}
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