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...

Exported functions

#define opj_mqc_setcurctx(mqc, ctxno)   (mqc)->curctx = &(mqc)->ctxs[(OPJ_UINT32)(ctxno)]
 Set the current context used for coding/decoding.
opj_mqc_topj_mqc_create (void)
 Create a new MQC handle.
void opj_mqc_destroy (opj_mqc_t *mqc)
 Destroy a previously created MQC handle.
OPJ_UINT32 opj_mqc_numbytes (opj_mqc_t *mqc)
 Return the number of bytes written/read since initialisation.
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.
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_flush_enc (opj_mqc_t *mqc)
 BYPASS mode switch, flush operation.
void opj_mqc_reset_enc (opj_mqc_t *mqc)
 RESET mode switch.
OPJ_UINT32 opj_mqc_restart_enc (opj_mqc_t *mqc)
 RESTART mode switch (TERMALL).
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).
OPJ_BOOL opj_mqc_init_dec (opj_mqc_t *mqc, OPJ_BYTE *bp, OPJ_UINT32 len)
 Initialize the decoder.
OPJ_INT32 opj_mqc_decode (opj_mqc_t *const mqc)
 Decode a symbol.

Defines

#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.


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.


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