#include "ltmm.h"

C Syntax

HRESULT IltmmAudioInput_put_MixLevel(pInput, newVal)

C++ Syntax

HRESULT put_MixLevel(newVal)

IltmmAudioInput *pInput;

pointer to an interface

double newVal;

recording volume

Sets the recording volume level for the audio input.

Parameter Description
pInput Pointer to an IltmmAudioInput Interface.
newVal Value that represents the new recording volume level. Possible values are:
  Value Meaning
  0.0 to 1.0 The allowed range for the recording volume level. 0.0 indicates the recording level is off (muted) and 1.0 is 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::put_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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