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

Example

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

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Elements:	IltmfCapture::get_Volume
Topics:	Media Foundation Function Group