#include "ltmm.h"
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C Syntax |
HRESULT IltmmPlay_IsRateSupported(pPlay, Rate, pResult) |
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C++ Syntax |
HRESULT IsRateSupported(Rate, pResult) |
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IltmmPlay *pPlay; |
/* pointer to an interface */ |
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double Rate; |
/* playback rate */ |
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VARIANT_BOOL *pResult; |
/* pointer to a variable */ |
Determines whether a specific playback rate is supported or not.
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Parameter |
Description |
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pPlay |
Pointer to an IltmmPlay interface. |
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Rate |
The playback rate for which to check. |
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pResult |
Pointer to a variable to be updated with a value that indicates whether the specified playback rate is supported. Possible values are: |
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Value |
Description |
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TRUE |
The rate is supported. |
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FALSE |
The rate is not supported. |
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
The playback rate is expressed as a ratio of the normal playback speed. For example, use 1.0 for normal speed, 2.0 for double speed, and 0.5 for half speed.
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. |
Win32, x64
See Also
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Elements: |
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Topics: |
Example
For a C example, refer to the IltmmPlay::IsRateSupported Example for C.
For a C++ example, refer to the IltmmPlay::IsRateSupported Example for C++.