/ fm / liveswitch / vp8 / Utility

Class: Utility

liveswitch.vp8.Utility

Utility methods.

Table of contents

Constructors

• constructor

Methods

• getTypeString
• deriveHeight
• deriveWidth
• getPictureIdDelta
• isKeyFrame

Constructors

constructor

+ new Utility(): Utility

Returns: Utility

Defined in: Generated/TypeScript/fm.liveswitch/vp8/Utility.ts:11

Methods

getTypeString

▸ getTypeString(): string

Returns: string

Defined in: Generated/TypeScript/fm.liveswitch/vp8/Utility.ts:9

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deriveHeight

▸ StaticderiveHeight(buffer: DataBuffer): number

Derives the height.

Parameters:

Name	Type	Description
buffer	DataBuffer	The buffer.

Returns: number

Defined in: Generated/TypeScript/fm.liveswitch/vp8/Utility.ts:29

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deriveWidth

▸ StaticderiveWidth(buffer: DataBuffer): number

Derives the width.

Parameters:

Name	Type	Description
buffer	DataBuffer	The buffer.

Returns: number

Defined in: Generated/TypeScript/fm.liveswitch/vp8/Utility.ts:42

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getPictureIdDelta

▸ StaticgetPictureIdDelta(pictureId: number, lastPictureId: number): number

Retrieves the difference between two picture IDs while accounting for overflow rollover.

Parameters:

Name	Type	Description
pictureId	number	The current picture ID.
lastPictureId	number	The last picture ID.

Returns: number

The difference between the picture IDs.

Defined in: Generated/TypeScript/fm.liveswitch/vp8/Utility.ts:87

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isKeyFrame

▸ StaticisKeyFrame(buffer: DataBuffer): boolean

Determines whether the buffer holds a keyframe. The data buffer must represent the payload of a VP8 packet.

Parameters:

Name	Type	Description
buffer	DataBuffer	The buffer.

Returns: boolean

Defined in: Generated/TypeScript/fm.liveswitch/vp8/Utility.ts:120