References ▼
Retrieves the volume level of the audio stream of the preview output.
#include "ltmm.h"
| Language | Syntax |
|---|---|
| C | HRESULT IltmmCapture_get_Volume(pCapture, pVolume) |
| C++ | HRESULT get_Volume(pVolume) |
Pointer to an IltmmCapture interface.
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.
| 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. |
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.
Win32, x64.
| Language | Example |
|---|---|
| C | IltmmCapture::IsPreviewTapSupported |
| C++ | IltmmCapture::IsPreviewTapSupported |
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