IBasicAudio::put_Volume
| Microsoft DirectShow 9.0 |
IBasicAudio::put_Volume
The put_Volume method sets the volume (amplitude) of the audio signal.
Syntax
HRESULT put_Volume( long lVolume );
Parameters
lVolume
[in] Specifies the volume, as a number from –10,000 to 0, inclusive. Full volume is 0, and –10,000 is silence. Multiply the desired decibel level by 100. For example, –10,000 = –100 dB.
Return Values
Returns an HRESULT value. Possible values include the following.
| Value | Description |
| E_FAIL | The underlying audio device returned an error. |
| E_INVALIDARG | The value of lVolume is invalid. |
| E_NOTIMPL | The filter graph does not contain an audio renderer filter. (Possibly the source does not contain an audio stream.) |
| S_OK | Success. |
Requirements
Header: Declared in Control.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also