Share via

SPSERIALIZEDEVENT64 (SAPI 5.4)

  • Article

Microsoft Speech API 5.4

SPSERIALIZEDEVENT64

SPSERIALIZEDEVENT64 serializes a SAPI event.

  
    typedef struct SPSERIALIZEDEVENT64
{
    WORD            eEventId;
    WORD            elParamType;
    ULONG           ulStreamNum;
    ULONGLONG       ullAudioStreamOffset;
    ULONGLONG       SerializedwParam;
    LONGLONG        SerializedlParam;
} SPSERIALIZEDEVENT64;

Members

  • eEventId
    The event ID of type SPEVENTENUM. 
  • elParamType
    The signature of the lParam parameter of type SPEVENTLPARAMTYPE.
  • ulStreamNum
    The stream number associated with the event.
    For text-to-speech (i.e., output streams), the stream number is incremented each time a new speak call (e.g., ISpVoice::SpeakStream, ISpVoice::Speak) is made.
    For speech recognition (i.e., input streams), the stream is incremented each time an audio stream is opened (i.e., ISpSREngine::RecognizeStream). Note that a single audio input object can be opened multiple times (e.g., buffer overflow, device error, recognition state change).
  • ullAudioStreamOffset
    The byte offset into the audio stream associated with the event at which the event was fired. For synthesis, the output stream is the synthesized data. For recognition, this indicates the position in the input audio stream.
  • SerializedwParam
    The wParam value that was included in the event. The variable uses a 64-bit data type for large addresses and values. See SPEVENTENUM for further information on possible wParam values.
  • SerializedlParam
    The lParam value that was included in the event. The variable uses a 64-bit data type for large addresses and values. See SPEVENTENUM for further information on possible lParam values.

Remarks

The 64 label signifies the use of 64-bit values for the wParam and lParam variables. Normally applications will not need to use 64-bit values, unless large pointers or sizes were stored in the original event structure. See also SPSERIALIZEDEVENT for the non-64-bit version.

See also SPEVENT for further information on the related event variable fields.