56 int64 startPositionInSourceStream,
57 int64 lengthOfSourceStream,
58 bool deleteSourceWhenDestroyed);
69 int64 getTotalLength()
override;
70 int64 getPosition()
override;
71 bool setPosition (int64 newPosition)
override;
72 int read (
void* destBuffer,
int maxBytesToRead)
override;
73 bool isExhausted()
override;
78 const int64 startPositionInSourceStream, lengthOfSourceStream;