C# Class CSJ2K.j2k.entropy.decoder.StdEntropyDecoder

Instantiates a new entropy decoder engine, with the specified source of data, nominal block width and height.

Returns the specified code-block in the current tile for the specified component, as a copy (see below).

The returned code-block may be progressive, which is indicated by the 'progressive' variable of the returned 'DataBlk' object. If a code-block is progressive it means that in a later request to this method for the same code-block it is possible to retrieve data which is a better approximation, since meanwhile more data to decode for the code-block could have been received. If the code-block is not progressive then later calls to this method for the same code-block will return the exact same data values.

The data returned by this method is always a copy of the internal data of this object, if any, and it can be modified "in place" without any problems after being returned. The 'offset' of the returned data is 0, and the 'scanw' is the same as the code-block width. See the 'DataBlk' class.

The 'ulx' and 'uly' members of the returned 'DataBlk' object contain the coordinates of the top-left corner of the block, with respect to the tile, not the subband.

Returns the specified code-block in the current tile for the specified component (as a reference or copy).

The returned code-block may be progressive, which is indicated by the 'progressive' variable of the returned 'DataBlk' object. If a code-block is progressive it means that in a later request to this method for the same code-block it is possible to retrieve data which is a better approximation, since meanwhile more data to decode for the code-block could have been received. If the code-block is not progressive then later calls to this method for the same code-block will return the exact same data values.

The data returned by this method can be the data in the internal buffer of this object, if any, and thus can not be modified by the caller. The 'offset' and 'scanw' of the returned data can be arbitrary. See the 'DataBlk' class.

The 'ulx' and 'uly' members of the returned 'DataBlk' object contain the coordinates of the top-left corner of the block, with respect to the tile, not the subband.

Static initializer: initializes all the lookup tables.

Performs the cleanup pass on the specified data and bit-plane. It decodes all insignificant samples which have its "visited" state bit off, using the ZC, SC, and RLC primitives. It toggles the "visited" state bit to 0 (off) for all samples in the code-block.

This method also checks for segmentation markers if those are present and returns true if an error is detected, or false otherwise. If an error is detected it measn that the bit stream contains some erroneous bit that have led to the decoding of incorrect data. This data affects the whole last decoded bit-plane (i.e. 'bp'). If 'true' is returned the 'conceal' method should be called and no more passes should be decoded for this code-block's bit stream.

Conceals decoding errors detected in the last bit-plane. The concealement resets the state of the decoded data to what it was before the decoding of bit-plane 'bp' started. No more data should be decoded after this method is called for this code-block's data to which it is applied.

Performs the magnitude refinement pass on the specified data and bit-plane. It decodes the samples which are significant and which do not have the "visited" state bit turned on, using the MR primitive. The "visited" state bit is not mofified for any samples.

This method also checks for segmentation markers if those are present and returns true if an error is detected, or false otherwise. If an error is detected it means that the bit stream contains some erroneous bit that have led to the decoding of incorrect data. This data affects the whole last decoded bit-plane (i.e. 'bp'). If 'true' is returned the 'conceal' method should be called and no more passes should be decoded for this code-block's bit stream.

Performs the magnitude refinement pass on the specified data and bit-plane. It decodes the samples which are significant and which do not have the "visited" state bit turned on, using the MR primitive. The "visited" state bit is not mofified for any samples.

This method bypasses the arithmetic coder and reads "raw" symbols from the bit stream.

This method also checks for segmentation markers if those are present and returns true if an error is detected, or false otherwise. If an error is detected it measn that the bit stream contains some erroneous bit that have led to the decoding of incorrect data. This data affects the whole last decoded bit-plane (i.e. 'bp'). If 'true' is returned the 'conceal' method should be called and no more passes should be decoded for this code-block's bit stream.

Performs the significance propagation pass on the specified data and bit-plane. It decodes all insignificant samples which have, at least, one of its immediate eight neighbors already significant, using the ZC and SC primitives as needed. It toggles the "visited" state bit to 1 for all those samples.

This method bypasses the arithmetic coder and reads "raw" symbols from the bit stream.

This method also checks for segmentation markers if those are present and returns true if an error is detected, or false otherwise. If an error is detected it measn that the bit stream contains some erroneous bit that have led to the decoding of incorrect data. This data affects the whole last decoded bit-plane (i.e. 'bp'). If 'true' is returned the 'conceal' method should be called and no more passes should be decoded for this code-block's bit stream.

Performs the significance propagation pass on the specified data and bit-plane. It decodes all insignificant samples which have, at least, one of its immediate eight neighbors already significant, using the ZC and SC primitives as needed. It toggles the "visited" state bit to 1 for all those samples.

This method also checks for segmentation markers if those are present and returns true if an error is detected, or false otherwise. If an error is detected it means that the bit stream contains some erroneous bit that have led to the decoding of incorrect data. This data affects the whole last decoded bit-plane (i.e. 'bp'). If 'true' is returned the 'conceal' method should be called and no more passes should be decoded for this code-block's bit stream.