OpenJPEG  1.5.0
Data Structures | Macros | Typedefs
mqc.h File Reference

Implementation of an MQ-Coder (MQC) More...

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Data Structures

struct  opj_mqc_state
 This struct defines the state of a context. More...
struct  opj_mqc
 MQ coder. More...

Macros

#define MQC_NUMCTXS   19

Typedefs

typedef struct opj_mqc_state opj_mqc_state_t
 This struct defines the state of a context.
typedef struct opj_mqc opj_mqc_t
 MQ coder.

Exported functions

#define mqc_setcurctx(mqc, ctxno)   (mqc)->curctx = &(mqc)->ctxs[(int)(ctxno)]
 Set the current context used for coding/decoding.
opj_mqc_tmqc_create (void)
 Create a new MQC handle.
void mqc_destroy (opj_mqc_t *mqc)
 Destroy a previously created MQC handle.
int mqc_numbytes (opj_mqc_t *mqc)
 Return the number of bytes written/read since initialisation.
void 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 mqc_setstate (opj_mqc_t *mqc, int ctxno, int msb, int prob)
 Set the state of a particular context.
void mqc_init_enc (opj_mqc_t *mqc, unsigned char *bp)
 Initialize the encoder.
void mqc_encode (opj_mqc_t *mqc, int d)
 Encode a symbol using the MQ-coder.
void mqc_flush (opj_mqc_t *mqc)
 Flush the encoder, so that all remaining data is written.
void mqc_bypass_init_enc (opj_mqc_t *mqc)
 BYPASS mode switch, initialization operation.
void mqc_bypass_enc (opj_mqc_t *mqc, int d)
 BYPASS mode switch, coding operation.
int mqc_bypass_flush_enc (opj_mqc_t *mqc)
 BYPASS mode switch, flush operation.
void mqc_reset_enc (opj_mqc_t *mqc)
 RESET mode switch.
int mqc_restart_enc (opj_mqc_t *mqc)
 RESTART mode switch (TERMALL)
void mqc_restart_init_enc (opj_mqc_t *mqc)
 RESTART mode switch (TERMALL) reinitialisation.
void mqc_erterm_enc (opj_mqc_t *mqc)
 ERTERM mode switch (PTERM)
void mqc_segmark_enc (opj_mqc_t *mqc)
 SEGMARK mode switch (SEGSYM)
void mqc_init_dec (opj_mqc_t *mqc, unsigned char *bp, int len)
 Initialize the decoder.
int mqc_decode (opj_mqc_t *const mqc)
 Decode a symbol.

Detailed Description

Implementation of an MQ-Coder (MQC)

The functions in MQC.C have for goal to realize the MQ-coder operations. The functions in MQC.C are used by some function in T1.C.