Class: Echonest::ApiMethods::Track

Inherits:

Base

• Object
• Base
• Echonest::ApiMethods::Track

Defined in:

lib/echonest/api.rb

Instance Method Summary

• #analysis(filename) ⇒ Object
• #analysis_url(filename) ⇒ Object
• #analyze(options) ⇒ Object
• #profile(options) ⇒ Object
• #upload(options) ⇒ Object

Methods inherited from Base

build_params_with_validation, #initialize, method_with_option, method_with_required_any, #request, validator

Constructor Details

This class inherits a constructor from Echonest::ApiMethods::Base

Instance Method Details

#analysis(filename) ⇒ Object

# File 'lib/echonest/api.rb', line 247

def analysis(filename)
  analysis_url = analysis_url(filename)
  Analysis.new_from_url(analysis_url)
end

#analysis_url(filename) ⇒ Object

# File 'lib/echonest/api.rb', line 252

def analysis_url(filename)
  md5 = Digest::MD5.hexdigest(open(filename).read)

  while true
    begin
      response = profile(:md5 => md5)
    rescue Api::Error => e
      if e.message =~ /^The Identifier specified does not exist/
       response = upload(:filename => filename)
     else
       raise
     end
   end

    case response.body.track.status
    when 'unknown'
      upload(:filename => filename)
    when 'pending'
      sleep 60
    when 'complete'
      return response.body.track.audio_summary.analysis_url
    when 'error'
      raise Error.new(response.body.track.status)
    when 'unavailable'
      analyze(:md5 => md5)
    end

    sleep 5
  end
end

#analyze(options) ⇒ Object

# File 'lib/echonest/api.rb', line 223

def analyze(options)
  @api.request('track/analyze',
    :post,
    options.merge(:bucket => 'audio_summary'))
end

#profile(options) ⇒ Object

# File 'lib/echonest/api.rb', line 217

def profile(options)
  @api.request('track/profile',
    :get,
    options.merge(:bucket => 'audio_summary'))
end

#upload(options) ⇒ Object

# File 'lib/echonest/api.rb', line 229

def upload(options)
  options.update(:bucket => 'audio_summary')

  if options.has_key?(:filename)
    filename = options.delete(:filename)
    filetype = filename.match(/\.(mp3|au|ogg)$/)[1]

    open(filename) do |f|
      @api.request('track/upload',
        :post,
        options.merge(:filetype => filetype),
        f)
    end
  else
    @api.request('track/upload', :post, options)
  end
end