CompositeTranscoder

EncodingUnitSizes Init ResetTranscoder TranscodeText

Attributes

Class CompositeTranscoder defines no new attributes.

Fields

instance CompositeTranscoder tag;
    transcoder1: nilObject;
    transcoder2: nilObject;
end instance;

Define Class CompositeTranscoder;
    inherits from Transcoder;
    uses extra;
    
    field transcoder1: Transcoder;
        // this transcoder is run first
    field transcoder2: Transcoder;
        // this transcoder is run on the output of transcoder1
    
    overrides Init;
        // Fill in the transcoder fields from the parameters.
    overrides TranscodeText;
        // Call both transcoders to transcode the text as needed.
        // This may do multiple calls to each if necessary since
        // the intermediate buffer is fixed size and might not be
        // big enough to do the whole thing in one pass.
    overrides EncodingUnitSizes;
        // Call first transcoder to get input size and second transcoder
        // to get output size.
    overrides ResetTranscoder;
        // Reset both transcoders.
end class;