IltmmCapture::get_Volume

Summary

Retrieves the volume level of the audio stream of the preview output.

Syntax

#include "ltmm.h"

Language Syntax
C HRESULT IltmmCapture_get_Volume(pCapture, pVolume)
C++ HRESULT get_Volume(pVolume)

Parameters

IltmmCapture *pCapture

Pointer to an IltmmCapture interface.

long *pVolume

Pointer to a variable to be updated with the volume level of the audio stream. Possible values range from -10000 to 0. Divide the value by 100 to get the equivalent decibel value.

Returns

Value Meaning
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

Full volume is 0, and -10000 is silence. The scale is logarithmic.

This property gets only the volume level that is applied to the preview output.

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Functions

Topics

Example

Language Example
C IltmmCapture::IsPreviewTapSupported
C++ IltmmCapture::IsPreviewTapSupported
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.