1 files changed, 114 insertions, 0 deletions
diff --git a/src/IvyIO.pm b/src/IvyIO.pm
new file mode 100644
index 0000000..8283a02
--- /dev/null
+++ b/src/IvyIO.pm
@@ -0,0 +1,114 @@
+package IvyIO;
+
+use strict;
+use Ivy;
+
+
+my $ivy;
+
+# init an ivy bus
+sub init {
+    my ($appname, $bus, $conncb, $disconncb) = @_;
+    Ivy->init(-loopMode => 'TK', 
+	      -appName => $appname,
+	      -ivyBus => $bus,
+         );
+    $ivy = Ivy->new(-statusFunc  => sub {&_status($conncb, $disconncb, @_);});
+    $ivy->start;
+
+} # end init
+
+# kill a named agent
+sub kill {
+    my $appname = shift;
+    $ivy->sendDieTo($appname);
+
+} # end kill
+
+
+sub _status {
+    my ($conncb, $disconncb, $ref_array_present, $ref_array_absent,
+	$ref_hash_present, $agent, $status, $host) = @_;
+    if ($status eq "new") {
+	&$conncb($agent, $host);
+    } elsif ($status eq "died") {
+	&$disconncb($agent, $host);
+    }
+    
+} # end _status
+
+#------------------------------------------------------------------------
+#
+# output
+#
+#------------------------------------------------------------------------
+
+sub send_rate {
+    my ($rate) = shift;
+    return unless $ivy;
+    $ivy->sendMsgs("SetClock Rate=$rate");
+    
+} # end ivy_send_rate
+
+
+sub send_time {
+    my ($time) = shift;
+    return unless $ivy;
+    $ivy->sendMsgs("SetClock Time=$time");
+
+} # end send_time
+
+
+sub send_pause {
+    return unless $ivy;
+    $ivy->sendMsgs("ClockStop");
+
+} # end send_pause
+
+
+sub send_play {
+    return unless $ivy;
+    $ivy->sendMsgs("ClockStart");
+
+} # end send_play_command
+
+
+#------------------------------------------------------------------------
+#
+# input
+#
+#------------------------------------------------------------------------
+
+sub bind_for_play_event {
+    my $cb = shift;
+    return unless $cb;
+    return unless $ivy;
+    $ivy->bindRegexp("ClockStart", [sub { shift; &$cb(); }]);
+
+} # end bind_for_play_event
+
+
+sub bind_for_pause_event {
+    my $cb = shift;
+    return unless $cb;
+    return unless $ivy;
+    $ivy->bindRegexp("ClockStop", [sub { shift; &$cb(); }]);
+    
+
+} # end bind_for_pause_event
+
+
+# execute the callback with arguments <time> and <rate>
+sub bind_for_clock_and_rate_event {
+    my $cb = shift;
+    return unless $cb;
+    return unless $ivy;
+    $ivy->bindRegexp('ClockEvent Time=(\d\d):(\d\d):(\d\d) Rate=(.*) Bs=.*',
+		     [sub { shift; &$cb(@_); }]);
+    $ivy->bindRegexp('ClockDatas Time=(\d\d):(\d\d):(\d\d) Rate=(.*) Bs=.*',
+		     [sub { shift; &$cb(@_); }]);
+    
+} # end bind_for_clock_event
+
+
+1;