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pcg |
1.1 |
#!/usr/bin/perl |
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use Video::Capture::V4l; |
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use Time::HiRes 'time'; |
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$grab = new Video::Capture::V4l; |
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my $channel = $grab->channel (0); |
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my $tuner = $grab->tuner (0); |
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$tuner->mode(MODE_PAL); $tuner->set; |
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$channel->norm(MODE_PAL); $channel->set; |
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$grab->picture->brightness(32768); |
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$grab->picture->contrast(40000); |
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$grab->picture->hue(32768); |
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$grab->picture->colour(32768); |
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$grab->picture->set; |
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#$RTL2 = 855250; |
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$RTL2 = 154250; |
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print $grab->freq ($RTL2),"\n"; |
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$|=1; |
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open DB,"<sailormoon.db" or die; |
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read(DB,$w,8) == 8 or die "no header(?)"; |
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($w,$h)=unpack("N*",$w); |
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print "$w $h\n"; |
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my $db = do { local $/; <DB> }; |
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my $frame=0; |
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my $fr=$grab->capture ($frame,$w<<4,$h<<4); |
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my $fps = 25; # glorious PAL |
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my @reg; |
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my ($expect_frame,$expect_count); |
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my $start = time; |
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my $next_frame = 0; |
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my $this_frame; |
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my $locked; |
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my $minb1 = 10; |
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for(;;) { |
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my $nfr = $grab->capture (1-$frame,$w<<4,$h<<4); |
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$this_frame = $next_frame; $next_frame = int((time-$start)*$fps); |
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$grab->sync($frame) or die "unable to sync"; |
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Video::Capture::V4l::reduce2($fr,$w<<4); |
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Video::Capture::V4l::reduce2($fr,$w<<3); |
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Video::Capture::V4l::reduce2($fr,$w<<2); |
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Video::Capture::V4l::reduce2($fr,$w<<1); |
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Video::Capture::V4l::normalize($fr); |
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($fr,$diff) = Video::Capture::V4l::findmin ($db, $fr, $expect_frame, $expect_count); |
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if ($diff < 400*400) { |
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push(@reg,$this_frame,$fr); |
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if (@reg > $fps*2) { |
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shift @reg; shift @reg; |
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my ($a,$b,$r2) = Video::Capture::V4l::linreg(\@reg); |
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if ($frame_zero) { |
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$expect_frame = $this_frame + $frame_zero + 1; |
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$expect_count = 25; |
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} else { |
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$expect_frame = $expect_count = 0; |
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} |
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printf "%9.2f + %7.2f * %6d =~ %4d (@%9.2f) EXPECT %6d - %4d ($minb1)",$a,$b,$this_frame,$fr,$r2,$frame_zero,$expect_frame; |
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my $b1 = abs($b-1); |
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if ($r2<100 && $b1<0.01) { |
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$found++; |
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print " LOCKED LOCKED LOCKED ($locked, $frame_zero)"; |
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} |
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if ($b1<$minb1) { |
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$frame_zero=-$a; |
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$minb1 = $b1; |
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} |
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print "\n"; |
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} |
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$jitter=0; |
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} else { |
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$jitter++; |
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if ($jitter > 5) { |
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$expect_frame=$expect_count=$frame_zero=0; |
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} |
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} |
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if ($found && $this_frame>$frame_zero+2000) { |
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print "KICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFFKICKOFF\n"; |
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die; |
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} |
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$count++; |
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$frame = 1-$frame; |
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$fr = $nfr; |
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} |
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