IltmmPlay::get_Volume
#include "ltmm.h"
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C Syntax |
HRESULT IltmmPlay__get_Volume(pPlay, pVal) |
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C++ Syntax |
RESULT get_Volume(pVal) |
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IltmmPlay *pPlay; |
/* pointer to an interface */ |
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long *pVal; |
/* pointer to a variable */ |
Retrieves the volume (amplitude) of the audio signal.
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Parameter |
Description |
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pPlay |
Pointer to an IltmmPlay interface. |
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pVal |
Pointer to a variable that receives the volume value. Divide by 100 to get equivalent decibel value (for example –10,000 = –100 dB). |
Returns
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S_OK |
The function was successful. |
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<> S_OK |
An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation. |
Comments
A rate of 1.0 indicates normal playback speed.
A rate of 0.5 indicates half speed.
A rate of –1.0 indicates normal speed in reverse.
Required DLLs and Libraries
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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. |
See Also
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Elements: |
IltmmPlay::get_Balance, IltmmPlay::get_Mute, IltmmPlay::put_Volume |
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Topics: |
Example
For a C example, refer to the Simple Media Player for C.
For a C++ example, refer to the Simple Media Player for C++.