M-ary arithmetic decoder class. More...

Public Member Functions
	MultiArithDecoder (int maxContexts, InputBitStream *in=nullptr)
	Create a decoder with the specified maximum number of contexts that sends output to the given bit stream. More...

	~MultiArithDecoder ()
	Destroy the decoder. More...

InputBitStream *	getInput () const
	Get the bit stream from which to read encoded data. More...

void	setInput (InputBitStream *in)
	Set the bit stream from which to read encoded data. More...

SPL_ArithCoder_ulong	getBitCount () const
	Get the number of bits read so far. More...

SPL_ArithCoder_ulong	getSymCount () const
	Get the number of symbols decoded so far. More...

int	getMaxContexts () const
	Get the maximum number of contexts. More...

void	setContext (int contextId, int numSyms)
	Set the specified context to have the given number of symbols which are initially equiprobable. More...

void	setContext (int contextId, const std::vector< ArithCoder::Freq > &symFreqs, bool adaptive)
	Set the specified context to have symbols with the given frequencies and the given adaptivity. More...

int	start ()
	Start a code word. More...

int	terminate ()
	Terminate a code word (for synchronization with encoder). More...

int	decodeRegular (int contextId)
	Decode a symbol using the given context. More...

int	decodeBypass (int numSyms)
	Decode a symbol in bypass mode (i.e., all symbols equiprobable). More...

void	dump (std::ostream &out) const
	Dump the internal state of the decoder to the specified stream for debugging purposes. More...

Static Public Member Functions
static void	setDebugLevel (int debugLevel)
	Set the debug level. More...

static void	setDebugStream (std::ostream &out)
	Set the stream to use for debugging output. More...

static std::ostream &	getDebugStream ()
	Get the stream used for debugging output. More...

Detailed Description

M-ary arithmetic decoder class.

Constructor & Destructor Documentation

SPL::MultiArithDecoder::MultiArithDecoder	(	int	maxContexts,
		InputBitStream *	in = `nullptr`
	)

Create a decoder with the specified maximum number of contexts that sends output to the given bit stream.

SPL::MultiArithDecoder::~MultiArithDecoder ( )

Destroy the decoder.

int SPL::MultiArithDecoder::decodeBypass ( int numSyms )

Decode a symbol in bypass mode (i.e., all symbols equiprobable).

int SPL::MultiArithDecoder::decodeRegular ( int contextId )

Decode a symbol using the given context.

void SPL::MultiArithDecoder::dump ( std::ostream & out ) const

Dump the internal state of the decoder to the specified stream for debugging purposes.

void SPL::MultiArithDecoder::setContext	(	int	contextId,
		int	numSyms
	)

Set the specified context to have the given number of symbols which are initially equiprobable.

void SPL::MultiArithDecoder::setContext	(	int	contextId,
		const std::vector< ArithCoder::Freq > &	symFreqs,
		bool	adaptive
	)

Set the specified context to have symbols with the given frequencies and the given adaptivity.

int SPL::MultiArithDecoder::start ( )

Start a code word.

This function must be called before attempting to decode any symbols.

int SPL::MultiArithDecoder::terminate ( )

Terminate a code word (for synchronization with encoder).

The documentation for this class was generated from the following files: