jj2000.j2k.entropy
Interface StdEntropyCoderOptions

All Known Implementing Classes:

EntropyCoder, FileBitstreamReaderAgent, HeaderDecoder, HeaderEncoder, PktDecoder, StdEntropyCoder, StdEntropyDecoder

public interface StdEntropyCoderOptions

This interface define the constants that identify the possible options for the entropy coder, as well some fixed parameters of the JPEG 2000 entropy coder.

Field Summary

static int	FIRST_BYPASS_PASS_IDX The index of the first "raw" pass, if bypass mode is on.
static int	MAX_CB_AREA The maximum code-block area (width x height).
static int	MAX_CB_DIM The maximum code-block dimension.
static int	MIN_CB_DIM The minimum code-block dimension.
static int	NUM_EMPTY_PASSES_IN_MS_BP The number of empty passes in the most significant bit-plane.
static int	NUM_NON_BYPASS_MS_BP The number of most significant bit-planes where bypass mode is not to be used, even if bypass mode is on: 4.
static int	NUM_PASSES The number of coding passes per bit-plane.
static int	OPT_BYPASS The flag bit to indicate that selective arithmetic coding bypass should be used.
static int	OPT_PRED_TERM The flag bit to indicate that error resilience info is embedded on MQ termination.
static int	OPT_RESET_MQ The flag bit to indicate that the MQ states for all contexts should be reset at the end of each (non-bypassed) coding pass.
static int	OPT_SEG_SYMBOLS The flag bit to indicate that an error resilience segmentation symbol is to be inserted at the end of each cleanup coding pass.
static int	OPT_TERM_PASS The flag bit to indicate that a termination should be performed after each coding pass.
static int	OPT_VERT_STR_CAUSAL The flag bit to indicate the vertically stripe-causal context formation should be used.
static int	STRIPE_HEIGHT The stripe height.

Field Detail

OPT_BYPASS

public static final int OPT_BYPASS

The flag bit to indicate that selective arithmetic coding bypass should be used. In this mode, the significance propagation and magnitude refinement passes bypass the arithmetic encoder in the fourth bit-plane and latter ones (but not the cleanup pass). Note that the transition between raw and AC segments needs terminations (whether or not OPT_TERM_PASS is used).

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Constant Field Values

OPT_RESET_MQ

public static final int OPT_RESET_MQ

The flag bit to indicate that the MQ states for all contexts should be reset at the end of each (non-bypassed) coding pass.

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Constant Field Values

OPT_TERM_PASS

public static final int OPT_TERM_PASS

The flag bit to indicate that a termination should be performed after each coding pass. Note that terminations are applied to both * * arithmetically coded and bypassed (i.e. raw) passes .

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Constant Field Values

OPT_VERT_STR_CAUSAL

public static final int OPT_VERT_STR_CAUSAL

The flag bit to indicate the vertically stripe-causal context formation should be used.

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Constant Field Values

OPT_PRED_TERM

public static final int OPT_PRED_TERM

The flag bit to indicate that error resilience info is embedded on MQ termination. This corresponds to the predictable termination described in Annex D.4.2 of the FDIS

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Constant Field Values

OPT_SEG_SYMBOLS

public static final int OPT_SEG_SYMBOLS

The flag bit to indicate that an error resilience segmentation symbol is to be inserted at the end of each cleanup coding pass. The segmentation symbol is the four symbol sequence 1010 that are sent through the MQ coder using the UNIFORM context (as explained in annex D.5 of FDIS).

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Constant Field Values

MIN_CB_DIM

public static final int MIN_CB_DIM

The minimum code-block dimension. The nominal width or height of a code-block must never be less than this. It is 4.

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Constant Field Values

MAX_CB_DIM

public static final int MAX_CB_DIM

The maximum code-block dimension. No code-block should be larger, either in width or height, than this value. It is 1024.

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Constant Field Values

MAX_CB_AREA

public static final int MAX_CB_AREA

The maximum code-block area (width x height). The surface covered by a nominal size block should never be larger than this. It is 4096

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Constant Field Values

STRIPE_HEIGHT

public static final int STRIPE_HEIGHT

The stripe height. This is the nominal value of the stripe height. It is 4.

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Constant Field Values

NUM_PASSES

public static final int NUM_PASSES

The number of coding passes per bit-plane. This is the number of passes per bit-plane. It is 3.

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Constant Field Values

NUM_NON_BYPASS_MS_BP

public static final int NUM_NON_BYPASS_MS_BP

The number of most significant bit-planes where bypass mode is not to be used, even if bypass mode is on: 4.

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Constant Field Values

NUM_EMPTY_PASSES_IN_MS_BP

public static final int NUM_EMPTY_PASSES_IN_MS_BP

The number of empty passes in the most significant bit-plane. It is 2.

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Constant Field Values

FIRST_BYPASS_PASS_IDX

public static final int FIRST_BYPASS_PASS_IDX

The index of the first "raw" pass, if bypass mode is on.

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Constant Field Values