CADI.Common.LogicalTarget.JPEG2000.Decode
Interface Decoder

All Known Implementing Classes:

MQDecoder, RawDecoder

public interface Decoder

This interface defines the methods that a decoder must contain.

Version:

1.0

Author:

Group on Interactive Coding of Images (GICI)

Method Summary

boolean	decodeBit() Decode a bit without taking into account context probabilities in an artihmetic like coder.
boolean	decodeBit(int context) Decode a bit taking into account context probabilities in an artihmetic like coder.
void	reset() Reset the context probabilities of the decoder, if any.
void	restart() Restart the internal variables of the decoder.
void	swapInputByteStream(ByteStream inputByteStream) Swaps the current inputByteStream.

Method Detail

decodeBit

boolean decodeBit(int context)
                  throws ErrorException

Decode a bit taking into account context probabilities in an artihmetic like coder.

Parameters:

context - context the bit

Returns:

a boolean indicating the decoded bit

Throws:

ErrorException - when some problem with the manipulation of the ByteStream happens

decodeBit

boolean decodeBit()
                  throws ErrorException

Decode a bit without taking into account context probabilities in an artihmetic like coder.

Returns:

a boolean indicating the decoded bit

Throws:

ErrorException - when some problem with the manipulation of the ByteStream happens

swapInputByteStream

void swapInputByteStream(ByteStream inputByteStream)

Swaps the current inputByteStream. After calling this function and continue using the decoder you should restart the decoder with the function restart.

Parameters:

inputByteStream - ByteStream from where the byte are got

restart

void restart()
             throws ErrorException

Restart the internal variables of the decoder.

Throws:

ErrorException - when some problem with the manipulation of the ByteStream happens

reset

void reset()

Reset the context probabilities of the decoder, if any.