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#!/usr/bin/perl |
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|
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use Video::Capture::V4l; |
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|
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sub print_capability { |
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my $c=shift; |
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print "Device: "; |
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print "name ",$c->name; |
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print ", type"; |
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for (qw(capture tuner teletext overlay chromakey clipping frameram scales monochrome subcapture)) { |
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print " $_" if eval "\$c->$_"; |
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} |
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print ", channels ",$c->channels; |
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print ", audios ",$c->audios; |
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print ", sizes ",$c->minwidth,"x",$c->minheight,"-",$c->maxwidth,"x",$c->maxheight; |
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print "\n"; |
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} |
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|
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sub print_channel { |
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my $c=shift; |
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print "Channel ",$c->channel,": "; |
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print "name ",$c->name; |
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print ", tuners ",$c->tuners; |
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print ", flags"; |
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for (qw(tuner audio)) { |
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print " $_" if eval "\$c->$_"; |
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} |
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print ", type"; |
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for (qw(tv camera)) { |
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print " $_" if eval "\$c->$_"; |
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} |
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# PAL, NTSC, SECAM, PAL-NC, PAL-M, PAL-N, NTSC-Japan |
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print ", norm ",$c->norm; |
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print "\n"; |
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} |
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|
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sub print_tuner { |
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my $c=shift; |
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print "Tuner ",$c->tuner,": "; |
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print "name ",$c->name; |
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print ", range ",$c->rangelow,"-",$c->rangehigh; |
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print ", flags"; |
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for (qw(pal ntsc secam low norm stereo_on rds_on mbs_on)) { |
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print " $_" if eval "\$c->$_"; |
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} |
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print ", mode ",$c->mode; |
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print ", signal ",$c->signal; |
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print "\n"; |
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} |
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|
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sub print_audio { |
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my $c=shift; |
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print "Audio Channel ",$c->audio,": "; |
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print "volume ",$c->volume; |
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print ", bass ",$c->bass; |
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print ", treble ",$c->treble; |
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print ", flags"; |
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for (qw(mute mutable volume bass treble)) { |
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print " $_" if eval "\$c->$_"; |
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} |
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print ", name ",$c->name; |
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print ", mode ",$c->mode; |
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print ", balance ",$c->balance; |
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print ", step ",$c->step; |
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print "\n"; |
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} |
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|
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sub print_picture { |
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my $c=shift; |
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print "Picture Settings: "; |
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print "brightness ",$c->brightness; |
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print ", hue ",$c->hue; |
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print ", colour ",$c->colour; |
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print ", contrast ",$c->contrast; |
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print ", whiteness ",$c->whiteness; |
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print ", depth ",$c->depth; |
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print ", palette ",$c->palette; |
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print "\n"; |
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} |
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|
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$grab = new Video::Capture::V4l |
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or die "Unable to open Videodevice: $!"; |
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|
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print_capability $grab->capability; |
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for (0..$grab->capability->channels-1) { |
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print_channel $grab->channel($_); |
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} |
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|
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for($_=0; my $tuner = $grab->tuner($_); $_++) { |
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last if $tuner->tuner != $_; |
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print_tuner $tuner; |
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} |
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|
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for($_=0; my $audio = $grab->audio($_); $_++) { |
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last if $audio->audio != $_; |
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print_audio $audio; |
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} |
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|
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print_picture $grab->picture; |
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|
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my $channel = $grab->channel (0); |
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my $tuner = $grab->tuner (0); |
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$tuner->mode(TUNER_PAL); |
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$channel->norm(MODE_PAL); |
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$tuner->set; |
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$channel->set; |
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|
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$RTL2 = 154250; |
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$RTL2 = 196250; |
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|
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print $grab->freq ($RTL2),"\n"; |
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|
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$|=1; |
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|
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my $frame=0; |
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my $fr=$grab->capture ($frame, 640, 480); |
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|
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for(;;) { |
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my $nfr = $grab->capture (1-$frame, 640, 480); |
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$grab->sync($frame) or die "unable to sync"; |
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|
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# save $fr now, as it contains the raw BGR data |
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print "."; |
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|
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$frame = 1-$frame; |
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$fr = $nfr; |
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} |
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