Allow remapping a channel to multiple channels (to duplicate notes).

[xonotic/xonotic.git] / misc / tools / midichannels.pl

diff --git a/misc/tools/midichannels.pl b/misc/tools/midichannels.pl
old mode 100644 (file)
new mode 100755 (executable)
index bcfe626..5462bbb
--- a/misc/tools/midichannels.pl
+++ b/misc/tools/midichannels.pl
@@ -62,7 +62,11 @@ while(<STDIN>)
        my @arg = split /\s+/, $_;
        my $cmd = shift @arg;
        print "Executing: $cmd @arg\n";
-       if($cmd eq 'clean')
+       if($cmd eq '#')
+       {
+               # Just a comment.
+       }
+       elsif($cmd eq 'clean')
        {
                my $tracks = $opus->tracks_r();
                $tracks->[$_]->events_r([clean($tracks->[$_]->events())])
@@ -87,6 +91,143 @@ while(<STDIN>)
        {
                print "haha, very funny\n";
        }
+       elsif($cmd eq 'retrack')
+       {
+               my $tracks = $opus->tracks_r();
+               my @newtracks = ();
+               for(0..@$tracks-1)
+               {
+                       for(abstime $tracks->[$_]->events())
+                       {
+                               my $p = $chanpos{$_->[0]};
+                               if(defined $p)
+                               {
+                                       my $c = $_->[$p] + 1;
+                                       push @{$newtracks[$c]}, $_;
+                               }
+                               else
+                               {
+                                       push @{$newtracks[0]}, $_;
+                               }
+                       }
+               }
+               $opus->tracks_r([map { ($_ && @$_) ? MIDI::Track->new({ events => [reltime @$_] }) : () } @newtracks]);
+       }
+       elsif($cmd eq 'program')
+       {
+               my $tracks = $opus->tracks_r();
+               my ($track, $channel, $program) = @arg;
+               for(($track eq '*') ? (0..@$tracks-1) : $track)
+               {
+                       my @events = ();
+                       my $added = 0;
+                       for(abstime $tracks->[$_]->events())
+                       {
+                               my $p = $chanpos{$_->[0]};
+                               if(defined $p)
+                               {
+                                       my $c = $_->[$p] + 1;
+                                       if($channel eq '*' || $c == $channel)
+                                       {
+                                               next
+                                                       if $_->[0] eq 'patch_change';
+                                               if(!$added)
+                                               {
+                                                       push @events, ['patch_change', $_->[1], $c-1, $program-1]
+                                                               if $program;
+                                                       $added = 1;
+                                               }
+                                       }
+                               }
+                               push @events, $_;
+                       }
+                       $tracks->[$_]->events_r([reltime @events]);
+               }
+       }
+       elsif($cmd eq 'transpose')
+       {
+               my $tracks = $opus->tracks_r();
+               my ($track, $channel, $delta) = @arg;
+               for(($track eq '*') ? (0..@$tracks-1) : $track)
+               {
+                       for($tracks->[$_]->events())
+                       {
+                               my $p = $chanpos{$_->[0]};
+                               if(defined $p)
+                               {
+                                       my $c = $_->[$p] + 1;
+                                       if($channel eq '*' ? $c != 10 : $c == $channel)
+                                       {
+                                               if($_->[0] eq 'note_on' || $_->[0] eq 'note_off')
+                                               {
+                                                       $_->[3] += $delta;
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+       elsif($cmd eq 'channel')
+       {
+               my $tracks = $opus->tracks_r();
+               my ($track, %chanmap) = @arg;
+               for(($track eq '*') ? (0..@$tracks-1) : $track)
+               {
+                       my @events = ();
+                       for(abstime $tracks->[$_]->events())
+                       {
+                               my $p = $chanpos{$_->[0]};
+                               if(!defined $p)
+                               {
+                                       push @events, $_;
+                                       next;
+                               }
+                               my $c = $_->[$p] + 1;
+                               my @c = split /,/, ($chanmap{$c} // $chanmap{'*'} // $c);
+                               for my $c(@c) {
+                                       next
+                                               if $c == 0; # kill by setting channel to 0
+                                       my @copy = @$_;
+                                       $copy[$p] = $c - 1;
+                                       push @events, \@copy;
+                               }
+                       }
+                       $tracks->[$_]->events_r([reltime @events]);
+               }
+       }
+       elsif($cmd eq 'percussion')
+       {
+               my $tracks = $opus->tracks_r();
+               my ($track, $channel, %map) = @arg;
+               for(($track eq '*') ? (0..@$tracks-1) : $track)
+               {
+                       my @events = ();
+                       for(abstime $tracks->[$_]->events())
+                       {
+                               my $p = $chanpos{$_->[0]};
+                               if(defined $p)
+                               {
+                                       my $c = $_->[$p] + 1;
+                                       if($channel eq '*' || $c == $channel)
+                                       {
+                                               if($_->[0] eq 'note_on' || $_->[0] eq 'note_off')
+                                               {
+                                                       if(length $map{$_->[3]})
+                                                       {
+                                                               $_->[3] = $map{$_->[3]};
+                                                       }
+                                                       elsif(exists $map{$_->[3]})
+                                                       {
+                                                               next;
+                                                       }
+                                               }
+                                       }
+                               }
+                               push @events, $_;
+                       }
+                       $tracks->[$_]->events_r([reltime @events]);
+               }
+       }
        elsif($cmd eq 'tracks')
        {
                my $tracks = $opus->tracks_r();
@@ -118,6 +259,8 @@ while(<STDIN>)
                                my %notehash = ();
                                my $t = 0;
                                my $events = 0;
+                               my $min = undef;
+                               my $max = undef;
                                for($tracks->[$_]->events())
                                {
                                        ++$events;
@@ -127,14 +270,23 @@ while(<STDIN>)
                                        if(defined $p)
                                        {
                                                my $c = $_->[$p] + 1;
-                                               ++$channels{$c};
+                                               $channels{$c} //= {};
+                                               if($_->[0] eq 'patch_change')
+                                               {
+                                                       ++$channels{$c}{$_->[3]};
+                                               }
                                        }
                                        ++$notes if $_->[0] eq 'note_on';
                                        $notehash{$_->[2]}{$_->[3]} = $t if $_->[0] eq 'note_on';
                                        $notehash{$_->[2]}{$_->[3]} = undef if $_->[0] eq 'note_off';
                                        $name = $_->[2] if $_->[0] eq 'track_name';
+                                       if($_->[0] eq 'note_on')
+                                       {
+                                               $min = $_->[3] if !defined $min || $_->[3] < $min;
+                                               $max = $_->[3] if !defined $max || $_->[3] > $max;
+                                       }
                                }
-                               my $channels = join " ", sort keys %channels;
+                               my $channels = join " ", map { sprintf "%s(%s)", $_, join ",", sort { $a <=> $b } keys %{$channels{$_}} } sort { $a <=> $b } keys %channels;
                                my @stuck = ();
                                while(my ($k1, $v1) = each %notehash)
                                {
@@ -147,7 +299,7 @@ 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 notes [$min-$max])" if $notes;
                                print " (notes @stuck stuck)" if @stuck;
                                print "\n";
                        }
@@ -159,7 +311,16 @@ while(<STDIN>)
        }
        else
        {
-               print "Unknown command, allowed commands: ticks, tracks, clean, save\n";
+               print "Unknown command, allowed commands:\n";
+               print "  clean\n";
+               print "  dump\n";
+               print "  ticks [value]\n";
+               print "  retrack\n";
+               print "  program <track|*> <channel|*> <program (1-based)>\n";
+               print "  transpose <track|*> <channel|*> <delta>\n";
+               print "  channel <track|*> <channel|*> <channel> [<channel> <channel> ...]\n";
+               print "  percussion <track|*> <channel|*> <from> <to> [<from> <to> ...]\n";
+               print "  tracks [trackno] [trackno] ...\n";
        }
        print "Done with: $cmd @arg\n";
 }