ej.microvg.image

Interface ImageDecoder

All Superinterfaces:

CommandDecoder

All Known Implementing Classes:

NemaImageDecoder, StubImageDecoder, VgliteImageDecoder

public interface ImageDecoder
extends CommandDecoder

Represents the decoder able to decode the images encoded for a given GPU.

Method Summary

Modifier and Type	Method and Description
default int	decodeColor(int color) Decodes the color encoded for a GPU.
int	decodeFillRule(int rule) Decodes the fill rule encoded for a GPU.
LinearGradient	decodeGradient(java.nio.ByteBuffer buffer) Decodes the linear gradient encoded in the RAW image's buffer.
PathData	decodePath(java.nio.ByteBuffer buffer) Wraps a PathData able to decode the path encoded in the RAW image's buffer.

Methods inherited from interface ej.microvg.CommandDecoder

decodeCommand

Method Detail

decodePath

PathData decodePath(java.nio.ByteBuffer buffer)

Wraps a PathData able to decode the path encoded in the RAW image's buffer. The first path element (the path's header) starts at current byte buffer's position. To decode the path's data, the implementation should wrap another ByteBuffer:

 ByteBuffer buffer = ByteBuffer.wrap(is.array(), is.position(), length).order(ByteOrder.LITTLE_ENDIAN);
 

Parameters:

buffer - the buffer where is encoded the path

Returns:

a path buffer

decodeGradient

LinearGradient decodeGradient(java.nio.ByteBuffer buffer)

Decodes the linear gradient encoded in the RAW image's buffer. The first gradient element (the gradient's header) starts at current byte buffer's position.

Parameters:

buffer - the buffer where is encoded the gradient

Returns:

a LinearGradient

See Also:

decodePath(ByteBuffer)

decodeFillRule

int decodeFillRule(int rule)

Decodes the fill rule encoded for a GPU.

Parameters:

rule - the fill rule to decode

Returns:

a LLVGConstants fill rule

decodeColor

default int decodeColor(int color)

Decodes the color encoded for a GPU. The expected color is a 32-bit color A-R-G-B. Default implementation considers the color is already a ARGB 32-bit color and does nothing.

Parameters:

color - color the color to decode

Returns:

a ARGB 32-bit color