LEADTOOLS Media Foundation Help
| LEADTOOLS Media Foundation Help > LEADTOOLS Media Foundation Features > Media Foundation Function References > IltmfPlay Interface > IltmfPlay::put_Rate |
#include "ltmf.h"
|
C Syntax |
HRESULT IltmfPlay_put_Rate(pPlay, newVal) |
|
C++ Syntax |
HRESULT put_Rate(newVal) |
|
IltmfPlay *pPlay; |
/* pointer to an interface */ |
|
double newVal; |
/* new playback rate */ |
Assigns the media playback rate.
|
Parameter |
Description |
|
pPlay |
Pointer to an IltmfPlay interface. |
|
newVal |
Playback rate. Must not be zero. |
Returns
|
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 speed. Thus, 1.0 is normal playback speed, 0.5 is half speed, and 2.0 are twice speed. For audio streams, changing the rate also changes the pitch.
Required DLLs and Libraries
|
LTMF 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
|
Elements: |
|
|
Topics: |
Example
For a C++ example, refer to the Simple Media Player for C++.
