1 | ###########################################################################
|
---|
2 | #
|
---|
3 | # FFTExtractor - helper plugin that computers audio features for
|
---|
4 | # music information retrieval use,using audioDB
|
---|
5 | #
|
---|
6 | # A component of the Greenstone digital library software
|
---|
7 | # from the New Zealand Digital Library Project at the
|
---|
8 | # University of Waikato, New Zealand.
|
---|
9 | #
|
---|
10 | # Copyright (C) 2010 New Zealand Digital Library Project
|
---|
11 | #
|
---|
12 | # This program is free software; you can redistribute it and/or modify
|
---|
13 | # it under the terms of the GNU General Public License as published by
|
---|
14 | # the Free Software Foundation; either version 2 of the License, or
|
---|
15 | # (at your option) any later version.
|
---|
16 | #
|
---|
17 | # This program is distributed in the hope that it will be useful,
|
---|
18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
20 | # GNU General Public License for more details.
|
---|
21 | #
|
---|
22 | # You should have received a copy of the GNU General Public License
|
---|
23 | # along with this program; if not, write to the Free Software
|
---|
24 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
25 | #
|
---|
26 | ###########################################################################
|
---|
27 | package FFTExtractor;
|
---|
28 |
|
---|
29 | use BaseMediaConverter;
|
---|
30 |
|
---|
31 | use Cwd;
|
---|
32 |
|
---|
33 | use strict;
|
---|
34 | no strict 'refs'; # allow filehandles to be variables and viceversa
|
---|
35 |
|
---|
36 |
|
---|
37 | BEGIN {
|
---|
38 | @FFTExtractor::ISA = ('BaseMediaConverter');
|
---|
39 | }
|
---|
40 |
|
---|
41 |
|
---|
42 | my $arguments = [
|
---|
43 | ];
|
---|
44 |
|
---|
45 |
|
---|
46 |
|
---|
47 | my $options = { 'name' => "FFTExtractor",
|
---|
48 | 'desc' => "{FFTExtractor.desc}",
|
---|
49 | 'abstract' => "yes",
|
---|
50 | 'inherits' => "yes",
|
---|
51 | 'args' => $arguments };
|
---|
52 |
|
---|
53 | sub new {
|
---|
54 | my ($class) = shift (@_);
|
---|
55 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
|
---|
56 | push(@$pluginlist, $class);
|
---|
57 |
|
---|
58 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
|
---|
59 | push(@{$hashArgOptLists->{"OptList"}},$options);
|
---|
60 |
|
---|
61 | my $self = new BaseMediaConverter($pluginlist, $inputargs, $hashArgOptLists, 1);
|
---|
62 |
|
---|
63 | return bless $self, $class;
|
---|
64 | }
|
---|
65 |
|
---|
66 |
|
---|
67 | sub convert_audio_format
|
---|
68 | {
|
---|
69 | my $self = shift(@_);
|
---|
70 | my $source_file_path = shift(@_);
|
---|
71 | my $target_ext = shift(@_);
|
---|
72 | my $convert_options = shift(@_) || "";
|
---|
73 |
|
---|
74 | my $outhandle = $self->{'outhandle'};
|
---|
75 | my $verbosity = $self->{'verbosity'};
|
---|
76 |
|
---|
77 | my $source_file_no_path = &File::Basename::basename($source_file_path);
|
---|
78 |
|
---|
79 | $self->init_cache_for_file($source_file_path);
|
---|
80 |
|
---|
81 | # Determine the full name and path of the output file
|
---|
82 | my $target_file_path;
|
---|
83 |
|
---|
84 | if ($self->{'enable_cache'}) {
|
---|
85 | my $cached_dir = $self->{'cached_dir'};
|
---|
86 | my $file_root = $self->{'cached_file_root'};
|
---|
87 |
|
---|
88 | my $target_file = "$file_root.$target_ext";
|
---|
89 |
|
---|
90 | $target_file_path = &util::filename_cat($cached_dir,$target_file);
|
---|
91 | }
|
---|
92 | else {
|
---|
93 | $target_file_path = &util::get_tmp_filename($target_ext);
|
---|
94 | }
|
---|
95 |
|
---|
96 | # Setup and run the ffmpeg command
|
---|
97 | my $ffmpeg_cmd = "ffmpeg -y $convert_options";
|
---|
98 | $ffmpeg_cmd .= " -i \"$source_file_path\"";
|
---|
99 | $ffmpeg_cmd .= " \"$target_file_path\"";
|
---|
100 |
|
---|
101 | ## print STDERR "****** cmd = $ffmpeg_cmd\n";
|
---|
102 |
|
---|
103 | my $print_info = { 'message_prefix' => "ffmpeg",
|
---|
104 | 'message' => "Converting $source_file_no_path to $target_ext format" };
|
---|
105 |
|
---|
106 | my ($regenerated,$result,$had_error)
|
---|
107 | = $self->autorun_general_cmd($ffmpeg_cmd,$source_file_path,
|
---|
108 | $target_file_path,$print_info);
|
---|
109 |
|
---|
110 | return $target_file_path;
|
---|
111 | }
|
---|
112 |
|
---|
113 |
|
---|
114 |
|
---|
115 | sub compute_fft_features
|
---|
116 | {
|
---|
117 | my $self = shift(@_);
|
---|
118 | my $source_file_path = shift(@_);
|
---|
119 | my $target_feature = shift(@_);
|
---|
120 | my $convert_options = shift(@_) || "";
|
---|
121 |
|
---|
122 | my $outhandle = $self->{'outhandle'};
|
---|
123 | my $verbosity = $self->{'verbosity'};
|
---|
124 |
|
---|
125 | ## print STDERR "**** wav filename = $source_file_path\n";
|
---|
126 |
|
---|
127 | my $source_file_no_path = &File::Basename::basename($source_file_path);
|
---|
128 |
|
---|
129 | $self->init_cache_for_file($source_file_path);
|
---|
130 |
|
---|
131 | my $target_file_path;
|
---|
132 | my $target_ext;
|
---|
133 |
|
---|
134 | if ($target_feature eq "chroma") {
|
---|
135 | $target_ext = "chr12";
|
---|
136 | $convert_options .= " -c 12";
|
---|
137 | }
|
---|
138 | elsif ($target_feature eq "power-log") {
|
---|
139 | $target_ext = "power";
|
---|
140 | $convert_options .= " -P";
|
---|
141 | }
|
---|
142 | else {
|
---|
143 | print STDERR "Warning: computer_fft_features(), unrecognized option '$target_feature'\n";
|
---|
144 | $target_ext = "txt";
|
---|
145 | }
|
---|
146 |
|
---|
147 | if ($self->{'enable_cache'}) {
|
---|
148 | my $cached_dir = $self->{'cached_dir'};
|
---|
149 | my $file_root = $self->{'cached_file_root'};
|
---|
150 |
|
---|
151 | my $target_file = "$file_root.$target_ext";
|
---|
152 |
|
---|
153 | $target_file_path = &util::filename_cat($cached_dir,$target_file);
|
---|
154 | }
|
---|
155 | else {
|
---|
156 | $target_file_path = &util::get_tmp_filename($target_ext);
|
---|
157 | }
|
---|
158 |
|
---|
159 | # Run fftExtract
|
---|
160 | my $fftExtract_cmd = "fftExtract $convert_options";
|
---|
161 | $fftExtract_cmd .= " \"$source_file_path\" \"$target_file_path\"";
|
---|
162 |
|
---|
163 | ## print STDERR "**** cmd = $fftExtract_cmd\n";
|
---|
164 |
|
---|
165 | my $print_info = { 'message_prefix' => "fftExtract",
|
---|
166 | 'message' => "Extracting $target_feature from $source_file_no_path" };
|
---|
167 |
|
---|
168 | my ($regenerated,$result,$had_error)
|
---|
169 | = $self->autorun_general_cmd($fftExtract_cmd,$source_file_path,$target_file_path,$print_info);
|
---|
170 |
|
---|
171 | return ($target_file_path);
|
---|
172 | }
|
---|
173 |
|
---|
174 |
|
---|
175 |
|
---|
176 |
|
---|
177 | 1;
|
---|