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#ifndef __WINZIP_JPEG_ARITHMETIC_DECODER_H__
#define __WINZIP_JPEG_ARITHMETIC_DECODER_H__
#include "InputStream.h"
#include <stdint.h>
#include <stdbool.h>
typedef struct WinZipJPEGArithmeticDecoder
{
WinZipJPEGReadFunction *readfunc;
void *inputcontext;
bool eof;
uint8_t currbyte,lastbyte;
uint8_t kmin2; // LPS count for reduction of Q by 4
uint8_t kmin1; // LPS count for reduction of Q by 2
uint8_t kmin; // largest LSP[sic] count for smaller Q
//uint8_t kavg; // expected average LPS count
uint8_t kmax; // smallest LPS count for larger Q
uint32_t x; // finite pricesion window on code stream
int32_t lp; // minus log p --- used only for testing
int32_t lr; // minus log of the range
int32_t lrm; // maximum lr before change index
int32_t lx; // decoder - log x
uint32_t dx; // antilog of lr -- used only for testing
} WinZipJPEGArithmeticDecoder;
typedef struct WinZipJPEGContext
{
int i;
int32_t dlrm; // difference between lrm and lr
uint8_t mps; // most probable symbol value - 0 or 1
uint8_t k; // least probable symbol count
} WinZipJPEGContext;
void InitializeWinZipJPEGArithmeticDecoder(WinZipJPEGArithmeticDecoder *self,WinZipJPEGReadFunction *readfunc, void *inputcontext);
void InitializeWinZipJPEGContext(WinZipJPEGContext *self);
void InitializeWinZipJPEGContexts(WinZipJPEGContext *first,size_t bytes);
void InitializeFixedWinZipJPEGContext(WinZipJPEGContext *self);
int NextBitFromWinZipJPEGArithmeticDecoder(WinZipJPEGArithmeticDecoder *self,WinZipJPEGContext *context);
void FlushWinZipJPEGArithmeticDecoder(WinZipJPEGArithmeticDecoder *self);
static inline bool WinZipJPEGArithmeticDecoderEncounteredEOF(WinZipJPEGArithmeticDecoder *self) { return self->eof; }
#endif
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