mqc.c File Reference

#include "opj_includes.h"
#include <assert.h>

Defines
#define	BYPASS_CT_INIT   0xDEADBEEF
Functions
OPJ_UINT32	opj_mqc_numbytes (opj_mqc_t *mqc)
	Return the number of bytes written/read since initialisation.
void	opj_mqc_init_enc (opj_mqc_t *mqc, OPJ_BYTE *bp)
	Initialize the encoder.
void	opj_mqc_encode (opj_mqc_t *mqc, OPJ_UINT32 d)
	Encode a symbol using the MQ-coder.
void	opj_mqc_flush (opj_mqc_t *mqc)
	Flush the encoder, so that all remaining data is written.
void	opj_mqc_bypass_init_enc (opj_mqc_t *mqc)
	BYPASS mode switch, initialization operation.
void	opj_mqc_bypass_enc (opj_mqc_t *mqc, OPJ_UINT32 d)
	BYPASS mode switch, coding operation.
OPJ_UINT32	opj_mqc_bypass_get_extra_bytes (opj_mqc_t *mqc, OPJ_BOOL erterm)
	Return number of extra bytes to add to opj_mqc_numbytes() for the² size of a non-terminating BYPASS pass.
void	opj_mqc_bypass_flush_enc (opj_mqc_t *mqc, OPJ_BOOL erterm)
	BYPASS mode switch, flush operation.
void	opj_mqc_reset_enc (opj_mqc_t *mqc)
	RESET mode switch.
void	opj_mqc_restart_init_enc (opj_mqc_t *mqc)
	RESTART mode switch (TERMALL) reinitialisation.
void	opj_mqc_erterm_enc (opj_mqc_t *mqc)
	ERTERM mode switch (PTERM).
void	opj_mqc_segmark_enc (opj_mqc_t *mqc)
	SEGMARK mode switch (SEGSYM).
static void	opj_mqc_init_dec_common (opj_mqc_t *mqc, OPJ_BYTE *bp, OPJ_UINT32 len, OPJ_UINT32 extra_writable_bytes)
void	opj_mqc_init_dec (opj_mqc_t *mqc, OPJ_BYTE *bp, OPJ_UINT32 len, OPJ_UINT32 extra_writable_bytes)
	Initialize the decoder for MQ decoding.
void	opj_mqc_raw_init_dec (opj_mqc_t *mqc, OPJ_BYTE *bp, OPJ_UINT32 len, OPJ_UINT32 extra_writable_bytes)
	Initialize the decoder for RAW decoding.
void	opq_mqc_finish_dec (opj_mqc_t *mqc)
	Terminate RAW/MQC decoding.
void	opj_mqc_resetstates (opj_mqc_t *mqc)
	Reset the states of all the context of the coder/decoder (each context is set to a state where 0 and 1 are more or less equiprobable).
void	opj_mqc_setstate (opj_mqc_t *mqc, OPJ_UINT32 ctxno, OPJ_UINT32 msb, OPJ_INT32 prob)
	Set the state of a particular context.
Local static functions
static void	opj_mqc_byteout (opj_mqc_t *mqc)
	Output a byte, doing bit-stuffing if necessary.
static void	opj_mqc_renorme (opj_mqc_t *mqc)
	Renormalize mqc->a and mqc->c while encoding, so that mqc->a stays between 0x8000 and 0x10000.
static void	opj_mqc_codemps (opj_mqc_t *mqc)
	Encode the most probable symbol.
static void	opj_mqc_codelps (opj_mqc_t *mqc)
	Encode the most least symbol.
static void	opj_mqc_setbits (opj_mqc_t *mqc)
	Fill mqc->c with 1's for flushing.
Variables
static const opj_mqc_state_t	mqc_states [47 *2]

---

Define Documentation

#define BYPASS_CT_INIT   0xDEADBEEF

Referenced by opj_mqc_bypass_enc(), and opj_mqc_bypass_init_enc().

---

Function Documentation

static void opj_mqc_init_dec_common	(	opj_mqc_t *	mqc,
		OPJ_BYTE *	bp,
		OPJ_UINT32	len,
		OPJ_UINT32	extra_writable_bytes
	)			[static]

References opj_mqc::backup, opj_mqc::bp, opj_mqc::end, OPJ_COMMON_CBLK_DATA_EXTRA, and opj_mqc::start.

Referenced by opj_mqc_init_dec(), and opj_mqc_raw_init_dec().

---

Variable Documentation

const opj_mqc_state_t mqc_states[47 *2] [static]