ILMVDynRateCtrl Interface

This is the interface for the LEAD Video Dynamic Rate Control Filter .

 

Data types: 

LMVDynRate_APILEVEL:

typedef enum LMVDynRate_APILEVEL
{
   LMVDynRate_APILEVEL_1 = 0
} LMVDynRate_APILEVEL

 

The LMVDynRate_APILEVEL enumeration type describes API version levels for this filter's default settings.

Member

Description

LMVDynRate_APILEVEL_1

API Version 1 defaults. Enabled=TRUE, Rate=1.0

 

Interface Properties:

Type

Name

Description

VARIANT_BOOL

Enable

Set to VARIANT_TRUE to enable the filter. If set to VARIANT_FALSE, the filter will pass the video stream as is, without changing the frame rate.

double

Rate

Sets or gets the dynamic playback rate, relative to input sample times.  Eg. 1.0 = 1x (orginal input stream playback rate), .5 = 1/2x (half as fast as original input rate), 2.0 = 2x (twice as fast as original input rate)

 

Methods:

 

HRESULT ResetToDefaultsEx( LMVDynRate_APILEVEL ApiLevel )

Description:

Resets the filter properties to their default values based on the API Level version passed.

Comments:

The method will fail if the filter is in the running state.

Returns:

S_OK 

Success

VFW_E_WRONG_STATE

The filter is in the wrong state.