Reference TAudioDecoder

  TAudioDecoder = class
  protected
    function GetPosition: Single;
    procedure SetPosition(Value: Single); virtual; abstract;
  public
    constructor Create(Source: TAudioSource); virtual;
    { Decode the next mixing block to Samples, which was filled with silence,
      and return False if the end was already reached. FDecoded is set to the
      number of samples decoded, which is fewer than a block at the end. }
    function Decode(Samples: PByte): Boolean; virtual; abstract;
    { Position in seconds }
    property Position: Single read GetPosition write SetPosition;
  end;