IltmfCapture::put_Volume

#include "ltmf.h"

C Syntax

HRESULT IltmfCapture_put_Volume(pCapture, Volume)

C++ Syntax

HRESULT put_Volume(Volume)

IltmfCapture *pCapture;

pointer to an interface

long Volume;

volume

Sets the volume level of the audio stream .

Parameter

Description

pCapture

Pointer to an IltmfCapture interface.

Volume

Volume level to set. Possible values range from 10000 to 0.

Returns

S_OK

The function was successful.

<> S_OK

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

Comments

Full volume is 0, and 10,000 is silence. The scale is logarithmic. Multiply the desired decibel level by 100 to get the proper value for newVal. For example if you want a volume of 100 dB, set newVal to 100 X 100 or -10000.

Required DLLs and Libraries

LTMF

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

Platforms

Win32, x64

See Also

Elements:

IltmfCapture::get_Volume

Topics:

Media Foundation Function Group

Example

For a C++ example, refer to Using Mute with ltmfCapture Example for C++.

Help Version 22.0.2021.8.20
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LEADTOOLS Media Foundation C API Help
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© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.