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#!/usr/bin/perl |
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|
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# dumps "interesting" data about tv channels |
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|
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use Getopt::Long; |
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|
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use Video::Frequencies; |
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use Video::Capture::V4l; |
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use Video::Capture::VBI qw/:DEFAULT %VPS_CNI %VT_NI/; |
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use Video::XawTV; |
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|
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GetOptions "+verbose|v" => \$verbose |
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or exit 1; |
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|
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$rc = new Video::XawTV; |
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eval { $rc->load("$ENV{HOME}/.xawtv") }; |
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|
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$ftab = $rc->opt('freqtab') || "pal-europe"; |
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$freq = $CHANLIST{$ftab} or die "no such frequency table: $ftab"; |
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|
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$v4l = new Video::Capture::V4l; |
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$tuner = $v4l->tuner(0); |
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$channel = $v4l->channel(0); |
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|
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$tuner->mode(MODE_PAL); $tuner->set; |
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$channel->norm(MODE_PAL); $channel->set; |
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|
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$vbi = new Video::Capture::V4l::VBI or die; |
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$vbi_fd = $vbi->fileno; |
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|
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$|=1; |
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|
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my @channels; |
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|
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for $chan (sort keys %$freq) { |
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my $f = $freq->{$chan}; |
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print "tuning to $chan ($f)..."; |
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$v4l->freq($f); |
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select undef,undef,undef,0.2; # shit! |
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$vbi->backlog (10); |
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%fea = (); |
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scan_vbi (50); |
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$vbi->backlog (0); |
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if ($tuner->signal > 30000) { |
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my $cni = $VPS_CNI{$fea{CNI} & 0xfff}; |
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my $ni = $VT_NI{$fea{NI}}; |
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my $name; |
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if (defined $ni) { |
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$name = "$ni->[0] ($ni->[1])"; |
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} elsif (defined $cni) { |
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$name = $cni; |
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} elsif ($fea{NAME}) { |
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$name = $fea{NAME}; |
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} elsif (length $fea{VT} > 1) { |
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$name = $fea{VT}; |
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} else { |
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$name = "channel $chan"; |
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} |
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$name =~ s/\s*"\s*/ /g; |
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$name =~ s/\s*\(.*?\)\s*/ /g; |
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$name =~ s/^\s+//; |
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$name =~ s/\s+$//; |
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print " $name"; |
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print " ["; |
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while(my($k,$v)=each %fea) { |
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print " $k","[$v]"; |
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} |
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print " ]"; |
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my $c = { name => $name, channel => $chan, capture => 'on' }; |
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if (1||$verbose) { |
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$c->{features} = join(":", %fea); |
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} |
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my $key = find_key ($name); |
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$c->{key} = $key if $key; |
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push @channels, $c; |
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} else { |
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print " no signal"; |
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} |
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print "\n"; |
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} |
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|
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$rc->channels(@channels); |
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$rc->save("xawtvrc"); |
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|
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print "\nnew xawtvrc saved as ./xawtvrc\n"; |
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|
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sub scan_vbi { |
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my $frames = shift; |
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|
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my($name_,$name,$name2); |
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|
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while ($frames) { |
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my $vbi_alloc; |
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$tuner->get; return if $tuner->signal < 30000; |
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$frames--; |
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|
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return if (defined $VT_NI{$fea{NI}} || defined $VPS_CNI{$fea{CNI}}) && !$verbose; |
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|
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for (decode_field $vbi->field, VBI_VT|VBI_VPS|VBI_OTHER|VBI_EMPTY) { |
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if ($_->[0] == VBI_VPS) { |
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$fea{CNI}=$_->[3]; |
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if (ord($_->[1]) > 127 or length $name_ >= 12) { |
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if ($name eq $name_) { |
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$fea{NAME}=$name; |
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} |
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$name = $name_; |
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} |
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$name_ .= $_->[1] & "\x7f"; |
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$fea{VPS}=sprintf "%04x", $_->[3]; |
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$vbi_alloc .= "V"; |
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} elsif ($_->[0] == VBI_VT) { |
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if ($_->[2] == 0) { |
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if ($_->[4] == 0x1df) { |
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$fea{EPG}=""; |
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} else { |
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$fea{VT}=vt_2_name($_->[3]); |
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} |
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} elsif ($_->[2] == 30) { |
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if (($_->[3]>>1) == 0) { |
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$fea{NI} = $_->[6]; |
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$fea{'NI30/1'}=sprintf "%04x", $_->[6]; |
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} elsif (($_->[3]>>1) == 8) { |
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$fea{PDC}=""; |
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} else { |
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$fea{"30"}="$_->[3]"; |
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} |
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} elsif ($_->[2] == 31) { |
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if ($_->[4] == 0x500) { |
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$fea{"$_->[1]/IC"}=""; |
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} else { |
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$fea{sprintf "$_->[1]/31[%x]",$_->[4]}++; |
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} |
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} |
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$vt++; |
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$vbi_alloc .= "T"; |
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} elsif ($_->[0] == VBI_OTHER) { |
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$vbi_alloc .= $_->[1] == 1 ? "c" : "O"; |
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} elsif ($_->[0] == VBI_EMPTY) { |
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$vbi_alloc .= "."; |
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} else { |
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$others++; |
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} |
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} |
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$fea{ALLOC}=$vbi_alloc; |
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select undef,undef,undef,0.1 unless $vbi->queued; |
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} |
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} |
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|
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# try to guess sender name from videotext |
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sub vt_2_name { |
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local $_ = substr (shift, 8, 20) & ("\x7f") x 20; |
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s/^\d+//; |
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s/^[\x00-\x1f ]+//; |
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s/\s*[\x00-\x1f].*//; |
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s/\W?text.*//i; |
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$_; |
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} |
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|
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sub find_key { |
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local $_ = shift; |
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return '.' if /3sat/; |
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return '1' if /ARD/; |
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return '2' if /ZDF/; |
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return '3' if /SW 3/; |
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return '7' if /PRO 7/; |
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return 'r' if /RTL Plus/; |
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return 't' if /RTL 2/; |
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return 'i' if /VIVA 2/; |
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return 'v' if /VIVA/; |
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return 'm' if /MTV/; |
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return 's' if /SAT 1/; |
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return 'k' if /Kabel 1/; |
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return 'e' if /EuroNews/; |
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return 'a' if /Arte/; |
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return 'x' if /VOX/; |
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(); |
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} |
