References ▼
Determines whether a specific playback rate is supported or not.
#include "ltmf.h"
| Language | Syntax |
|---|---|
| C | HRESULT IltmfPlay_IsRateSupported(pPlay, rate, pVal) |
| C++ | HRESULT IsRateSupported(rate, pVal) |
Pointer to an IltmfPlay interface.
The playback rate for which to check.
Pointer to a variable to be updated with a value that indicates whether the specified playback rate is supported. Possible values are:
| Value | Description |
|---|---|
| TRUE | The rate is supported. |
| FALSE | The rate is not supported. |
| 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 MediaFoundation documentation. |
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.
Win32, x64.
For a C++ example, refer to the IltmfPlay::IsRateSupported Example for C++.
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