midichannels: add "clean" command

diff --git a/misc/tools/midichannels.pl b/misc/tools/midichannels.pl
index 5cfe188177031a99e63c0f85a3eec7c9cf8a4cd7..5dc67ea736d2ac4d46651e49894f6d46cb859d3f 100644 (file)
--- a/misc/tools/midichannels.pl
+++ b/misc/tools/midichannels.pl
@@ -18,13 +18,43 @@ my %chanpos = (
        pitch_wheel_change => 2
 );
 
+my %isclean = (
+       set_tempo => sub { 1; },
+       note_off => sub { 1; },
+       note_on => sub { 1; },
+       control_change => sub { $_[3] == 64; },
+);
+
+sub abstime(@)
+{
+       my $t = 0;
+       return map { [$_->[0], $t += $_->[1], @{$_}[2..(@$_-1)]]; } @_;
+}
+
+sub reltime(@)
+{
+       my $t = 0;
+       return map { my $tsave = $t; $t = $_->[1]; [$_->[0], $t - $tsave, @{$_}[2..(@$_-1)]]; } @_;
+}
+
+sub clean(@)
+{
+       return reltime grep { ($isclean{$_->[0]} // sub { 0; })->(@$_) } abstime @_;
+}
+
 while(<STDIN>)
 {
        chomp;
        my @arg = split /\s+/, $_;
        my $cmd = shift @arg;
        print "Executing: $cmd @arg\n";
-       if($cmd eq 'ticks')
+       if($cmd eq 'clean')
+       {
+               my $tracks = $opus->tracks_r();
+               $tracks->[$_]->events_r([clean($tracks->[$_]->events())])
+                       for 0..@$tracks-1;
+       }
+       elsif($cmd eq 'ticks')
        {
                if(@arg)
                {
@@ -44,8 +74,8 @@ while(<STDIN>)
                my $tracks = $opus->tracks_r();
                if(@arg)
                {
-                       my %taken = (0 => 1);
-                       my @t = ($tracks->[0]);
+                       my %taken = ();
+                       my @t = ();
                        my $force = 0;
                        for(@arg)
                        {
@@ -61,7 +91,7 @@ while(<STDIN>)
                }
                else
                {
-                       for(1..@$tracks-1)
+                       for(0..@$tracks-1)
                        {
                                print "Track $_:";
                                my $name = undef;
@@ -69,8 +99,10 @@ while(<STDIN>)
                                my $notes = 0;
                                my %notehash = ();
                                my $t = 0;
+                               my $events = 0;
                                for($tracks->[$_]->events())
                                {
+                                       ++$events;
                                        $_->[0] = 'note_off' if $_->[0] eq 'note_on' and $_->[4] == 0;
                                        $t += $_->[1];
                                        my $p = $chanpos{$_->[0]};
@@ -96,6 +128,7 @@ while(<STDIN>)
                                }
                                print " $name" if defined $name;
                                print " (channel $channels)" if $channels ne "";
+                               print " ($events events)" if $events;
                                print " ($notes notes)" if $notes;
                                print " (notes @stuck stuck)" if @stuck;
                                print "\n";
@@ -108,7 +141,7 @@ while(<STDIN>)
        }
        else
        {
-               print "Unknown command, allowed commands: ticks, tricks, tracks, save\n";
+               print "Unknown command, allowed commands: ticks, tracks, clean, save\n";
        }
        print "Done with: $cmd @arg\n";
 }