#include "ltmm.h"

C Syntax

HRESULT IltmmAudioInput_get_MixLevel(pInput, pVal)

C++ Syntax

HRESULT get_MixLevel(pVal)

IltmmAudioInput *pInput;

pointer to an interface

double *pVal;

pointer to a variable

Retrieves the recording volume level for the audio input.

Parameter Description
pInput Pointer to an IltmmAudioInput Interface.
pVal Pointer to a variable to be updated with the recording volume level. Possible values are:
  Value Meaning
  0.0 to 1.0 Expected range of recording volume level, where 0.0 indicates the recording level is off (muted) and 1.0 is the full volume.
  -1.0 The recording level is adjusted automatically. (Automatic gain adjustment)



The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.


For more information, refer to the Microsoft documentation for IAMAudioInputMixer::get_MixLevel .

Required DLLs and Libraries


For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.


Win32, x64

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