IltmmAudioInput::get_MixLevel

#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)

Returns

S_OK

The function was successful.

<> S_OK

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

Comments

For more information, refer to the Microsoft documentation for IAMAudioInputMixer::get_MixLevel at http://msdn.microsoft.com/archive/default.asp?url=/library/en-us/directshow/htm/iamaudioinputmixerget_mixlevel.asp.

Required DLLs and Libraries

LTMM

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

See Also

Elements:

IltmmAudioInput::get_Bass, IltmmAudioInput::get_BassRange, IltmmAudioInput::get_Loudness, IltmmAudioInput::put_MixLevel, IltmmAudioInput::get_Pan, IltmmAudioInput::get_Treble, IltmmAudioInput::get_TrebleRange, IltmmAudioInput::put_Bass, IltmmAudioInput::put_Loudness, IltmmAudioInput::put_Mono, IltmmAudioInput::get_Mono, IltmmAudioInput::put_Pan, IltmmAudioInput::put_Treble

Topics:

Multimedia Function Group

Example

For a C example, refer to IltmmAudioInput::get_Bass Example for C.

For a C++ example, refer to IltmmAudioInput::get_Bass Example for C++.