IltmfPlay::IsRateSupported

Summary

Determines whether a specific playback rate is supported or not.

Syntax

#include "ltmf.h"

Language Syntax
C HRESULT IltmfPlay_IsRateSupported(pPlay, rate, pVal)
C++ HRESULT IsRateSupported(rate, pVal)

Parameters

IltmfPlay *pPlay

Pointer to an IltmfPlay interface.

DOUBLE rate

The playback rate for which to check.

VARIANT_BOOL *pVal

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.

Returns

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.

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

Platforms

Win32, x64.

See Also

Functions

Topics

Example

For a C++ example, refer to the IltmfPlay::IsRateSupported Example for C++.

Help Version 23.0.2024.2.29
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Media Foundation C API Help
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.