1 | ###########################################################################
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2 | #
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3 | # FFTExtractor - helper plugin that computers audio features for
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4 | # music information retrieval use,using audioDB
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5 | #
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6 | # A component of the Greenstone digital library software
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7 | # from the New Zealand Digital Library Project at the
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8 | # University of Waikato, New Zealand.
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9 | #
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10 | # Copyright (C) 2010 New Zealand Digital Library Project
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11 | #
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12 | # This program is free software; you can redistribute it and/or modify
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13 | # it under the terms of the GNU General Public License as published by
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14 | # the Free Software Foundation; either version 2 of the License, or
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15 | # (at your option) any later version.
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16 | #
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17 | # This program is distributed in the hope that it will be useful,
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18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 | # GNU General Public License for more details.
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21 | #
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22 | # You should have received a copy of the GNU General Public License
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23 | # along with this program; if not, write to the Free Software
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24 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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25 | #
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26 | ###########################################################################
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27 | package FFTExtractor;
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28 |
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29 | use BaseMediaConverter;
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30 |
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31 | use Cwd;
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32 |
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33 | use strict;
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34 | no strict 'refs'; # allow filehandles to be variables and viceversa
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35 |
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36 |
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37 | BEGIN {
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38 | @FFTExtractor::ISA = ('BaseMediaConverter');
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39 | }
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40 |
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41 |
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42 | my $arguments = [
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43 | ];
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44 |
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45 |
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46 |
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47 | my $options = { 'name' => "FFTExtractor",
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48 | 'desc' => "{FFTExtractor.desc}",
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49 | 'abstract' => "yes",
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50 | 'inherits' => "yes",
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51 | 'args' => $arguments };
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52 |
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53 | sub new {
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54 | my ($class) = shift (@_);
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55 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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56 | push(@$pluginlist, $class);
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57 |
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58 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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59 | push(@{$hashArgOptLists->{"OptList"}},$options);
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60 |
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61 | my $self = new BaseMediaConverter($pluginlist, $inputargs, $hashArgOptLists, 1);
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62 |
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63 | return bless $self, $class;
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64 | }
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65 |
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66 |
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67 | sub convert_audio_format
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68 | {
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69 | my $self = shift(@_);
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70 | my $source_file_path = shift(@_);
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71 | my $target_ext = shift(@_);
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72 | my $convert_options = shift(@_) || "";
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73 |
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74 | my $outhandle = $self->{'outhandle'};
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75 | my $verbosity = $self->{'verbosity'};
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76 |
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77 | my $source_file_no_path = &File::Basename::basename($source_file_path);
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78 |
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79 | $self->init_cache_for_file($source_file_path);
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80 |
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81 | # Determine the full name and path of the output file
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82 | my $target_file_path;
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83 |
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84 | if ($self->{'enable_cache'}) {
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85 | my $cached_dir = $self->{'cached_dir'};
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86 | my $file_root = $self->{'cached_file_root'};
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87 |
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88 | my $target_file = "$file_root.$target_ext";
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89 |
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90 | $target_file_path = &util::filename_cat($cached_dir,$target_file);
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91 | }
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92 | else {
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93 | $target_file_path = &util::get_tmp_filename($target_ext);
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94 | }
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95 |
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96 | my $native_source_file_path = $source_file_path;
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97 |
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98 | my $native_target_file_path = $target_file_path;
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99 | if ($^O eq "cygwin") {
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100 | # Only get ffmpeg as native Windows binary => need to use Windows style path
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101 | $native_source_file_path=`cygpath -w \"$source_file_path\"`;
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102 | $native_target_file_path=`cygpath -w \"$target_file_path\"`;
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103 | $native_source_file_path =~ s/\s+$//;
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104 | $native_target_file_path =~ s/\s+$//;
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105 | }
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106 |
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107 | # Setup and run the ffmpeg command
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108 | my $ffmpeg_cmd = "ffmpeg -y";
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109 | $ffmpeg_cmd .= " -i \"$native_source_file_path\" $convert_options";
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110 | $ffmpeg_cmd .= " \"$native_target_file_path\"";
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111 |
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112 | ## print STDERR "****** cmd = $ffmpeg_cmd\n";
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113 |
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114 | my $print_info = { 'message_prefix' => "ffmpeg",
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115 | 'message' => "Converting $source_file_no_path to $target_ext format" };
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116 |
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117 | my ($regenerated,$result,$had_error)
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118 | = $self->autorun_general_cmd($ffmpeg_cmd,$source_file_path,
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119 | $target_file_path,$print_info);
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120 |
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121 | return $target_file_path;
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122 | }
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123 |
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124 |
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125 |
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126 | sub compute_fft_features
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127 | {
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128 | my $self = shift(@_);
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129 | my $source_file_path = shift(@_);
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130 | my $target_feature = shift(@_);
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131 | my $convert_options = shift(@_) || "";
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132 |
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133 | my $outhandle = $self->{'outhandle'};
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134 | my $verbosity = $self->{'verbosity'};
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135 |
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136 | ## print STDERR "**** wav filename = $source_file_path\n";
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137 |
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138 | my $source_file_no_path = &File::Basename::basename($source_file_path);
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139 |
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140 | $self->init_cache_for_file($source_file_path);
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141 |
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142 | my $target_file_path;
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143 | my $target_ext;
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144 |
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145 | if ($target_feature eq "chroma") {
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146 | $target_ext = "chr12";
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147 | $convert_options .= " -c 12";
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148 | }
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149 | elsif ($target_feature eq "power-log") {
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150 | $target_ext = "power";
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151 | $convert_options .= " -P";
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152 | }
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153 | else {
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154 | print STDERR "Warning: computer_fft_features(), unrecognized option '$target_feature'\n";
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155 | $target_ext = "txt";
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156 | }
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157 |
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158 | if ($self->{'enable_cache'}) {
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159 | my $cached_dir = $self->{'cached_dir'};
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160 | my $file_root = $self->{'cached_file_root'};
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161 |
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162 | my $target_file = "$file_root.$target_ext";
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163 |
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164 | $target_file_path = &util::filename_cat($cached_dir,$target_file);
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165 | }
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166 | else {
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167 | $target_file_path = &util::get_tmp_filename($target_ext);
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168 | }
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169 |
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170 | # Run fftExtract
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171 | my $fftExtract_cmd = "fftExtract $convert_options";
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172 | $fftExtract_cmd .= " \"$source_file_path\" \"$target_file_path\"";
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173 |
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174 | ## $fftExtract_cmd =~ s/\\/\//g;
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175 |
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176 | ## print STDERR "**** cmd = $fftExtract_cmd\n";
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177 |
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178 | my $print_info = { 'message_prefix' => "fftExtract",
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179 | 'message' => "Extracting $target_feature from $source_file_no_path" };
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180 |
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181 | my ($regenerated,$result,$had_error)
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182 | = $self->autorun_general_cmd($fftExtract_cmd,$source_file_path,$target_file_path,$print_info);
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183 |
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184 | return ($target_file_path);
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185 | }
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186 |
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187 |
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188 |
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189 |
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190 | 1;
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