Class: Mediainfo::StreamProxy

Inherits:
Object
  • Object
show all
Defined in:
lib/mediainfo.rb

Defined Under Namespace

Classes: NoStreamsForProxyError, SingleStreamAPIError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mediainfo, stream_type) ⇒ StreamProxy

Returns a new instance of StreamProxy.



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# File 'lib/mediainfo.rb', line 125

def initialize(mediainfo, stream_type)
  unless Mediainfo::SECTIONS.include? stream_type
    raise ArgumentError, "invalid stream_type: #{stream_type.inspect}"
  end
  
  @stream_type = stream_type
  @mediainfo   = mediainfo
  @streams     = @mediainfo.streams.select { |x| x.send("#{stream_type}?") }
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *a, &b) ⇒ Object 



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# File 'lib/mediainfo.rb', line 143

def method_missing(m, *a, &b)
  if streams.size > 1
    raise SingleStreamAPIError, "You cannot use the single stream, convenience API on a multi-stream file."
  else
    if relevant_stream = streams.detect { |s| s.respond_to?(m) }
      relevant_stream.send(m, *a, &b)
    else
      raise NoStreamsForProxyError, "there are no :#{stream_type} streams to send :#{m} to"
    end
  end
end

Instance Attribute Details

#stream_type ⇒ Object (readonly)

Returns the value of attribute stream_type.



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# File 'lib/mediainfo.rb', line 138

def stream_type
  @stream_type
end

#streams ⇒ Object (readonly)

Returns the value of attribute streams.



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# File 'lib/mediainfo.rb', line 137

def streams
  @streams
end

Instance Method Details

#[](id) ⇒ Object 



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# File 'lib/mediainfo.rb', line 135

def [](id); @streams[id];  end

#count ⇒ Object 



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# File 'lib/mediainfo.rb', line 136

def count;  @streams.size; end