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IltmmCapture::get_Volume

#include "ltmm.h"

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

IltmmCapture *pCapture;	pointer to an interface
long *pVolume;	pointer to a variable

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

Parameter	Description
pCapture	Pointer to an IltmmCapture interface.
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.

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

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.

Win32, x64

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Elements:	IltmmCapture::put_Volume
Topics:	Multimedia Function Groups