//
// This software is supplied under the terms of a licence agreement or 
// nondisclosure agreement with Intel Corporation and may not be copied 
// or disclosed except in accordance with the terms of that agreement.  
// Copyright © 1997 Microsoft Corporation. All Rights Reserved.
//
// Filename : Silence.idl
// Purpose  : Defines the interfaces exposed by the PCM Silence
//            suppression filter.
// Contents : ISilenceSuppressor interface specification.
//
// Begin ISilenceSuppressor Specification
import "oaidl.idl";

[
    object,
    uuid(40C1D160-52F2-11d0-A874-00AA00B5CA1B),
    local,
    helpstring("ISilenceSuppressor Interface"),
    pointer_default(unique)
]
interface ISilenceSuppressor : IUnknown
{
    HRESULT GetPostplayTime(
                [out] LPDWORD lpdwPostplayBufferTime
                );
    HRESULT SetPostplayTime(
                [in]  DWORD   dwPostplayBufferTime
                );

    HRESULT GetKeepPlayTime(
                [out] LPDWORD lpdwRunningAverageTime
                );
    HRESULT SetKeepPlayTime(
                [in]  DWORD   dwRunningAverageTime
                );

    HRESULT GetThresholdIncrementor(
                [out] LPDWORD lpdwThresholdIncrementor
                );
    HRESULT SetThresholdIncrementor(
                [in]  DWORD   dwThresholdIncrementor
                );

    HRESULT GetBaseThreshold(
                [out] LPDWORD lpdwBaseThreshold
                );
    HRESULT SetBaseThreshold(
                [in]  DWORD   dwBaseThreshold
                );

    HRESULT EnableEvents(
                [in]  DWORD   dwMask,
                [in]  DWORD   dwMinimumInterval
                );
}
cpp_quote("EXTERN_C const CLSID CLSID_SilenceSuppressionFilter;")
cpp_quote("EXTERN_C const CLSID CLSID_SilenceSuppressionProperties;")

cpp_quote("#define AGC_EVENTBASE (100000)")

typedef enum AGC_EVENT
{
    AGC_INCREASE_GAIN,
    AGC_DECREASE_GAIN,
    AGC_TALKING,
    AGC_SILENCE

} AGC_EVENT;