tools/synthesize_sources.pl

   1 #!/usr/bin/env perl
   2 # Ardour session synthesizer
   3 # (c)Sampo Savolainen 2007-2008
   4 #
   5 # GPL
   6 # This reads an Ardour session file and creates zero-signal source files
   7 # for each missing source file. The length of each file is determined
   8 # by how far regions using that source file go into the sample data.
   9
  10 use FindBin '$Bin';
  11 use lib "$Bin";
  12 use XML::Parser::PerlSAX;
  13 use XML::Handler::XMLWriter;
  14 use IO::Handle;
  15
  16 use ARDOUR::SourceInfoLoader;
  17
  18 my $usage = "usage: synthesize_sources.pl samplerate [session name, the name must match the directory and the .ardour file in it] [options: -sine for 440hz sine waves in wave files]\n";
  19
  20 my ($samplerate, $sessionName, @options) = @ARGV;
  21
  22 if ( ! -d $sessionName || ! -f $sessionName."/".$sessionName.".ardour" ) {
  23         print $usage;
  24         exit;
  25 }
  26
  27 my $waveType = "silent";
  28
  29 foreach my $o (@options) {
  30         if ($o eq "-sine") {
  31                 $waveType = "sine";
  32         } elsif ($o eq "-silent") {
  33                 $waveType = "silent";
  34         } else {
  35                 print "unknown parameter ".$o."\n";
  36                 print $usage;
  37                 exit;
  38
  39         }
  40
  41 }
  42
  43 my $sessionFile = $sessionName."/".$sessionName.".ardour";
  44
  45
  46 my $handler = new ARDOUR::SourceInfoLoader($sessionName);
  47
  48 my $parser = XML::Parser::PerlSAX->new( Handler => $handler );
  49
  50 $parser->parse(Source => { SystemId => $sessionFile });
  51
  52 if ( ! -d $sessionName."/interchange" ) {
  53         mkdir $sessionName."/interchange/" || die "couldn't create ".$sessionName."/interchange";
  54 }
  55
  56 if ( ! -d $sessionName."/interchange/".$sessionName ) {
  57         mkdir $sessionName."/interchange/".$sessionName || die "couldn't create ".$sessionName."/interchange/".$sessionName;
  58 }
  59
  60 if ( ! -d $sessionName."/interchange/".$sessionName."/audiofiles" ) {
  61         mkdir $sessionName."/interchange/".$sessionName."/audiofiles" || die "couldn't create ".$sessionName."/interchange/".$sessionName."/audiofiles";
  62 }
  63
  64 if ( ! -d $sessionName."/peaks") {
  65         mkdir $sessionName."/peaks/" || die "couldn't create ".$sessionName."/peaks";
  66 }
  67
  68 my $audioFileDirectory = $sessionName."/interchange/".$sessionName."/audiofiles";
  69
  70 my %sources = %{$handler->{Sources}};
  71
  72 foreach my $tmp (keys %sources) {
  73
  74         print "Generating ".$audioFileDirectory."/".$sources{$tmp}->{name}."\n";
  75
  76         my @cmd =
  77               ("sox",
  78                "-t", "raw",        # /dev/zero is raw :)
  79                "-r", $samplerate,  # set sample rate
  80                "-c", "1",          # 1 channel
  81                "-b", "8"           # input in 8 bit chunks
  82                "-s",               # signed
  83                "/dev/zero",        # input signal
  84
  85                "-b", "16"          # input in 16 bit chunks
  86                "-t", "wav",        # format wav
  87                $audioFileDirectory."/".$sources{$tmp}->{name}, # filename
  88                "trim", "0", $sources{$tmp}->{calculated_length}."s" # trim silence to wanted sample amount
  89                );
  90
  91         if ($waveType eq "sine") {
  92                 @cmd = (@cmd, "synth","sin","%0", "vol", "0.2", "fade","q","0.01s", $sources{$tmp}->{calculated_length}."s" , "0.01s");
  93         }
  94
  95         system(@cmd);
  96 }
  97
  98
  99