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 The Microsoft.com Speech website Microsoft Speech SDK

SAPI 5.1

ISpSREngineSite::DataAvailable

ISpSREngineSite::DataAvailable retrieves the amount of data that can be read using ISpSREngineSite::Read without blocking.

This method can only be called while the SR engine is inside a ISpSREngine::RecognizeStream call, although it can be called on any thread.

HRESULT DataAvailable(
   ULONG   *pcb
);

Parameters

pcb
[out] The amount, in bytes, of data available. For real-time audio streams this is the actual amount of data currently available. For non real-time streams this method will always return the value INFINITE. Using the fRealTimeAudio parameter on the RecognizeStream method, engines can determine whether this is a real-time stream.

Return values

Value Description
S_OK Function completed successfully.
E_POINTER pcb is a bad write pointer.
SPERR_STREAM_NOT_ACTIVE Method called when engine is not inside RecognizeStream call.
FAILED(hr) Other appropriate error message.


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