Class VLCombine.TVLCombine

This is a Beta Read Only version of this page. Please review and send recommendations to mitov@mitov.com. We will enable the editing as soon as we are happy with the overall Wiki site.

Package: VideoLabPkg

Unit: VLCombine

Inherits: TVLCommonCombine

Contents 1 Syntax 1.1 Delphi: 1.2 C++ Builder: 1.3 Visual C++ (MFC): 1.4 C# (.NET): 2 Summary 3 Description 4 Properties 4.1 Published 5 Methods 5.1 Public 6 PinLists 7 From TVLCommonCombine 8 Properties 8.1 Published 9 From TVLMultiInput 10 Properties 10.1 Published 11 Pins

Syntax

Delphi:

type TVLCombine = class( TVLCommonCombine )

C++ Builder:

class TVLCombine : public TVLCommonCombine

Visual C++ (MFC):

class CTVLCombine : public CTVLCommonCombine

C# (.NET):

public ref class TVLCombine : Mitov.VideoLab.CommonCombine

Summary

Combines two videos.

Description

Use this component to combine two images delivered via InputPins by performing the operation selected by CombineOperation property : coAdd, coSubtract, coMultiply, coDivide, coOr, coAnd, coXor, coAbsDiff, or coCopy.

Diagram:

Example:

Original Image 1:	Original Image 2:
Add: 1 + 2	Subtract: 1 - 2
Multiply: 1 * 2	Divide: 1 / 2
And: 1 and 2	Or: 1 or 2
Xor: 1 xor 2	AbsDiff: Abs( 1 - 2 )

Properties

Published

• CombineOperation - The combine operation.
• Coefficient1 - Specifies the multiplication transparency coefficient for the first video channel of the combine component.
• Coefficient2 - Specifies the multiplication transparency coefficient for the second video channel of the combine component.
• RateSource - Specifies the frame rate source.

Methods

Public

• procedure ProcessFrame(InImage1 : IVLImageBuffer; InImage2 : IVLImageBuffer; var OutImage : IVLImageBuffer) - Performs a filter operation over video buffers.
• procedure ProcessBitmap(InBitmap1 : TBitmap; InBitmap2 : TBitmap; OutBitmap : TBitmap) - Performs a combine operation over bitmaps.

PinLists

• InputPins - The video input pins of the combine.

From TVLCommonCombine

Properties

Published

• FrameSize - The rules to be used to calculate the size of the output frame.
• Offset - The X,Y offset between the two source images.
• StartIfNotAllRunning - Specifies if the component can start if not all inputs have started.
• BackgroundColor - The color of the area in the image not covered by any of the input images (The remaining area.).

From TVLMultiInput

Properties

Published

• AfterStop - Specifies the mixer behavior after the input streams have stopped.
• VideoFormat - Specifies the output video format for the component.
• Threading - Specifies the desired threading settings for the filtering.

Pins

• OutputPin - The Video Output Pin of the component.