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

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]

Variable Documentation

const opj_mqc_state_t mqc_states[47 *2] [static]

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