M-ary arithmetic decoder class. More...
#include <arithCoder.hpp>
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... | |
M-ary arithmetic decoder class.
| 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).