ILMVFire Interface

Data types:

This filter has no specific data types, but includes the following enumerations for use with its programming interface:

DIRECTION

enum DIRECTION 
{ 
   DIR_NORTH = 1, 
   DIR_SOUTH = 2, 
   DIR_EAST = 4, 
   DIR_WEST = 8, 
   DIR_NORTHEAST = 16, 
   DIR_NORTHWEST = 32, 
   DIR_SOUTHEAST = 64, 
   DIR_SOUTHWEST = 128, 
   DIR_GLOW = 256 
}; 

REFERENCE_FRAME

enum REFERENCE_FRAME 
{ 
   REF_USEBUFFER, 
   REF_USENEXTFRAME, 
   REF_USECOLOR, 
}; 

 

Interface Properties:

Type

Name

Description

VARIANT_BOOL

Enabled

Enables or disables the effect. If set to VARIANT_FALSE, the filter will pass the video samples intact.

DIRECTION

Direction

Value that indicates the direction of the flames. Values may be combined using OR.
DIR_NORTH: Flames to the North.
DIR_SOUTH: Flames to the South.
DIR_EAST : Flames to the East.
DIR_WEST : Flames to the West.
DIR_NORTHEAST : Flames to the North-East.
DIR_NORTHWEST : Flames to the North-West.
DIR_SOUTHEAST : Flames to the South-East.
DIR_SOUTHWEST : Flames to the South-West.
DIR_GLOW : Flames all around theobject, giving a glowing effect.

long

Decay

Controls the spread and height of the flames. A lower decay value will result in a greater spread of fire and higher flames. Range: 1 to 100.

long

ColorsOffset

Changes the colors used in generating the fire flames to another set of colors. Range: 0 to 1000.

long

GradientLevel

A percentage value that controls the colors graduation. For example 0 will result in a very small number of colors used to draw the flame. Higher values result in more colors used to draw the flames' gradient color. Range: 0 to 100.

VARIANT_BOOL

Fire

Enables or disables covering the entire object with flames. If this is VARIANT_TRUE, the entire object will be covered in flames and the Burn property will be turned off automatically (false).

VARIANT_BOOL

Burn

Enables or disables having only parts of the object on fire. If this is VARIANT_TRUE, only parts of the object will be covered in flames the Fire property will be turned off automatically (false).

VARIANT_BOOL

ShowBackground

Enables or disables showing the background of a moving object. If this is VARIANT_TRUE, the background of the moving object will be displayed. Otherwise, a black background is displayed.

VARIANT_BOOL

FirstFrameIsReference

Enables or disables setting the first frame in every play session as the reference frame. If this is VARIANT_TRUE, the first frame in every play session will be set as the reference frame (Usually the first frame in a movie).

If this property is VARIANT_FALSE, then the reference frame should be set manually after a number of frames. Setting this property after the stream starts will have no effect.

long

Threshold

Value used to control an object's detection level. A lower threshold provides stronger object detection. Range : 1 to 100.

VARIANT_BOOL

NoReferenceFrame

Flag that controls the reference frame. If this property is VARIANT_TRUE, the reference frame is assumed to be a black buffer. If it is VARIANT_FALSE, the reference frame will be the frame set by the user through the SetReferenceFrame method or by setting the FirstFrameAsReference property.

Interface Methods:

HRESULT SetReferenceFrame (BYTE *pBuffer, long lRGBColor, REFERENCE_FRAME opt)

Parameters

pBuffer buffer contains the reference frame. This buffer should have the same dimensions (width and height), and the same bits per pixel as the movie.
lRGBColor pixel color (RGB 24-bit). The reference frame will be set as a solid frame with the color specified in this parameter.
opt flag that controls the reference frame. Possible values are:
  Value Meaning
  REF_USEBUFFER only the pBuffer member is used.
  REF_USENEXTFRAME the next frame in the movie is taken as the reference frame.
  REF_USECOLOR the lRGBColor parameter is used.

Description

Sets the reference frame of the movie.

Return

S_OK if connected, S_FALSE otherwise.

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