Module: MusicMaster

Defined in:
lib/MusicMaster/old/Common.rb,
lib/MusicMaster/Utils.rb,
lib/MusicMaster/Launcher.rb,
lib/MusicMaster/FilesNamer.rb,
lib/MusicMaster/Formats/MP3.rb,
lib/MusicMaster/Formats/Test.rb,
lib/MusicMaster/Formats/Wave.rb,
lib/MusicMaster/Processes/Cut.rb,
lib/MusicMaster/RakeProcesses.rb,
lib/MusicMaster/Processes/Test.rb,
lib/MusicMaster/Processes/GVerb.rb,
lib/MusicMaster/Processes/Custom.rb,
lib/MusicMaster/Processes/DCShifter.rb,
lib/MusicMaster/Processes/Normalize.rb,
lib/MusicMaster/Processes/Compressor.rb,
lib/MusicMaster/Processes/VolCorrection.rb,
lib/MusicMaster/Processes/ApplyVolumeFct.rb,
lib/MusicMaster/Processes/CutFirstSignal.rb,
lib/MusicMaster/Processes/SilenceInserter.rb

Overview

– Copyright © 2009 - 2012 Muriel Salvan ([email protected]) Licensed under the terms specified in LICENSE file. No warranty is provided. ++

Defined Under Namespace

Modules: FilesNamer, Formats, Processes, RakeProcesses, Utils Classes: Launcher

Class Method Summary collapse

Class Method Details

.applyProcesses(iEffects, iFileName, iDir) ⇒ Object

Apply given record effects on a Wave file. It modifies the given Wave file. It saves original and intermediate Wave files before modifications.

Parameters

  • iEffects (list<map<Symbol,Object>>): List of effects to apply

  • iFileName (String): File name to apply effects to

  • iDir (String): The directory where temporary files are stored



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# File 'lib/MusicMaster/old/Common.rb', line 16

def self.applyProcesses(iEffects, iFileName, iDir)
  lFileNameNoExt = File.basename(iFileName[0..-5])
  iEffects.each_with_index do |iEffectInfo, iIdxEffect|
    begin
      access_plugin('Processes', iEffectInfo[:Name]) do |ioActionPlugin|
        # Save the file before using the plugin
        lSave = true
        lSaveFileName = "#{iDir}/#{lFileNameNoExt}.Before_#{iIdxEffect}_#{iEffectInfo[:Name]}.wav"
        if (File.exists?(lSaveFileName))
          puts "!!! File #{lSaveFileName} already exists. Overwrite and apply effect ? [y='yes']"
          lSave = ($stdin.gets.chomp == 'y')
        end
        if (lSave)
          log_info "Saving file #{iFileName} to #{lSaveFileName} ..."
          FileUtils::mv(iFileName, lSaveFileName)
          log_info "===== Apply Effect #{iEffectInfo[:Name]} to #{iFileName} ====="
          ioActionPlugin.execute(lSaveFileName, iFileName, iDir, iEffectInfo.clone.delete_if{|iKey, iValue| next (iKey == :Name)})
        end
      end
    rescue Exception
      log_err "An error occurred while processing #{iFileName} with process #{iEffectInfo[:Name]}: #{$!}."
      raise
    end
  end
end

.src(iSrcFile, iDstFile, iParams) ⇒ Object

Convert a Wave file to another music file

Parameters

  • iSrcFile (String): Source WAVE file

  • iDstFile (String): Destination file

  • iParams (map<Symbol,Object>): The parameters:

    • :SampleRate (Integer): The new sample rate in Hz

    • :BitDepth (Integer): The new bit depth (only for Wave) [optional = nil]

    • :Dither (Boolean): Do we apply dither (only for Wave) ? [optional = false]

    • :BitRate (Integer): Bit rate in kbps (only for MP3) [optional = 320]

    • :FileFormat (Symbol): File format. Here are the possible values: [optional = :Wave]

      • :Wave: Uncompressed PCM Wave file

      • :MP3: MP3 file



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# File 'lib/MusicMaster/old/Common.rb', line 55

def self.src(iSrcFile, iDstFile, iParams)
  if ((iParams[:FileFormat] != nil) and
      (iParams[:FileFormat] == :MP3))
    # MP3 conversion
    lTranslatedParams = []
    iParams.each do |iParam, iValue|
      case iParam
      when :SampleRate
        lTranslatedParams << "Sample rate: #{iValue} Hz"
      when :BitRate
        lTranslatedParams << "Bit rate: #{iValue} kbps"
      when :FileFormat
        # Nothing to do
      else
        log_err "Unknown MP3 parameter: #{iParam} (value #{iValue.inspect}). Ignoring it."
      end
    end
    puts "Convert file #{iSrcFile} into file #{iDstFile} in MP3 format with following parameters: #{lTranslatedParams.join(', ')}"
    puts 'Press Enter when done.'
    $stdin.gets
  else
    # Wave conversion
    lTranslatedParams = [ '--profile standard', '--twopass' ]
    iParams.each do |iParam, iValue|
      case iParam
      when :SampleRate
        lTranslatedParams << "--rate #{iValue}"
      when :BitDepth
        lTranslatedParams << "--bits #{iValue}"
      when :Dither
        if (iValue == true)
          lTranslatedParams << '--dither 4'
        end
      when :FileFormat
        # Nothing to do
      else
        log_err "Unknown Wave parameter: #{iParam} (value #{iValue.inspect}). Ignoring it."
      end
    end
    FileUtils::mkdir_p(File.dirname(iDstFile))
    lCmd = "#{@MusicMasterConf[:SRCCmdLine]} #{lTranslatedParams.join(' ')} \"#{iSrcFile}\" \"#{iDstFile}\""
    log_info "=> #{lCmd}"
    system(lCmd)
  end
end