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#!/usr/bin/perl
use Video::Capture::V4l;
sub print_capability {
my $c=shift;
print "Device: ";
print "name ",$c->name;
print ", type";
for (qw(capture tuner teletext overlay chromakey clipping frameram scales monochrome subcapture)) {
print " $_" if eval "\$c->$_";
}
print ", channels ",$c->channels;
print ", audios ",$c->audios;
print ", sizes ",$c->minwidth,"x",$c->minheight,"-",$c->maxwidth,"x",$c->maxheight;
print "\n";
}
sub print_channel {
my $c=shift;
print "Channel ",$c->channel,": ";
print "name ",$c->name;
print ", tuners ",$c->tuners;
print ", flags";
for (qw(tuner audio)) {
print " $_" if eval "\$c->$_";
}
print ", type";
for (qw(tv camera)) {
print " $_" if eval "\$c->$_";
}
# PAL, NTSC, SECAM, PAL-NC, PAL-M, PAL-N, NTSC-Japan
print ", norm ",$c->norm;
print "\n";
}
sub print_tuner {
my $c=shift;
print "Tuner ",$c->tuner,": ";
print "name ",$c->name;
print ", range ",$c->rangelow,"-",$c->rangehigh;
print ", flags";
for (qw(pal ntsc secam low norm stereo_on rds_on mbs_on)) {
print " $_" if eval "\$c->$_";
}
print ", mode ",$c->mode;
print ", signal ",$c->signal;
print "\n";
}
sub print_audio {
my $c=shift;
print "Audio Channel ",$c->audio,": ";
print "volume ",$c->volume;
print ", bass ",$c->bass;
print ", treble ",$c->treble;
print ", flags";
for (qw(mute mutable volume bass treble)) {
print " $_" if eval "\$c->$_";
}
print ", name ",$c->name;
print ", mode ",$c->mode;
print ", balance ",$c->balance;
print ", step ",$c->step;
print "\n";
}
sub print_picture {
my $c=shift;
print "Picture Settings: ";
print "brightness ",$c->brightness;
print ", hue ",$c->hue;
print ", colour ",$c->colour;
print ", contrast ",$c->contrast;
print ", whiteness ",$c->whiteness;
print ", depth ",$c->depth;
print ", palette ",$c->palette;
print "\n";
}
$grab = new Video::Capture::V4l
or die "Unable to open Videodevice: $!";
print_capability $grab->capability;
for (0..$grab->capability->channels-1) {
print_channel $grab->channel($_);
}
for($_=0; my $tuner = $grab->tuner($_); $_++) {
last if $tuner->tuner != $_;
print_tuner $tuner;
}
for($_=0; my $audio = $grab->audio($_); $_++) {
last if $audio->audio != $_;
print_audio $audio;
}
print_picture $grab->picture;
my $channel = $grab->channel (0);
$channel->norm(MODE_PAL);
$channel->set;
my $tuner = $grab->tuner (0);
$tuner->mode(MODE_PAL);
$tuner->set;
my $channel = $grab->channel (1);
$channel->norm(MODE_PAL);
$channel->set;
$RTL2 = 154250;
print $grab->freq ($RTL2),"\n";
$|=1;
my $frame=0;
my $fr=$grab->capture ($frame, 64, 48);
for(;;) {
my $nfr = $grab->capture (1-$frame, 64, 48);
$grab->sync($frame) or die "unable to sync";
open X, ">x"; print X $fr; close X;
# save $fr now, as it contains the raw BGR data
print ".";
$frame = 1-$frame;
$fr = $nfr;
}
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