Classes | Macros | Typedefs | Functions | Variables
jdhuff.h File Reference
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Classes

struct  bitread_perm_state
 
struct  bitread_working_state
 
struct  d_derived_tbl
 

Macros

#define BIT_BUF_SIZE   32 /* size of buffer in bits */
 
#define BITREAD_LOAD_STATE(cinfop, permstate)
 
#define BITREAD_SAVE_STATE(cinfop, permstate)
 
#define BITREAD_STATE_VARS
 
#define CHECK_BIT_BUFFER(state, nbits, action)
 
#define DROP_BITS(nbits)   (bits_left -= (nbits))
 
#define GET_BITS(nbits)   (((int) (get_buffer >> (bits_left -= (nbits)))) & ((1<<(nbits))-1))
 
#define HUFF_DECODE(result, state, htbl, failaction, slowlabel)
 
#define HUFF_LOOKAHEAD   8 /* # of bits of lookahead */
 
#define PEEK_BITS(nbits)   (((int) (get_buffer >> (bits_left - (nbits)))) & ((1<<(nbits))-1))
 

Typedefs

typedef INT32 bit_buf_type
 

Functions

 EXTERN (void) jpeg_make_d_derived_tbl JPP((j_decompress_ptr cinfo
 
 EXTERN (boolean) jpeg_fill_bit_buffer JPP((bitread_working_state *state
 
 EXTERN (int) jpeg_huff_decode JPP((bitread_working_state *state
 

Variables

register bit_buf_type register int bits_left
 
register bit_buf_type get_buffer
 
register bit_buf_type register int d_derived_tblhtbl
 
boolean isDC
 
register bit_buf_type register int d_derived_tbl int min_bits
 
register bit_buf_type register int int nbits
 
boolean int d_derived_tbl ** pdtbl
 
boolean int tblno
 

Macro Definition Documentation

#define BIT_BUF_SIZE   32 /* size of buffer in bits */

Definition at line 73 of file jdhuff.h.

#define BITREAD_LOAD_STATE (   cinfop,
  permstate 
)
Value:
br_state.cinfo = cinfop; \
br_state.next_input_byte = cinfop->src->next_input_byte; \
br_state.bytes_in_buffer = cinfop->src->bytes_in_buffer; \
get_buffer = permstate.get_buffer; \
bits_left = permstate.bits_left;
register bit_buf_type get_buffer
Definition: jdhuff.h:155
register bit_buf_type register int bits_left
Definition: jdhuff.h:155

Definition at line 107 of file jdhuff.h.

#define BITREAD_SAVE_STATE (   cinfop,
  permstate 
)
Value:
cinfop->src->next_input_byte = br_state.next_input_byte; \
cinfop->src->bytes_in_buffer = br_state.bytes_in_buffer; \
permstate.get_buffer = get_buffer; \
permstate.bits_left = bits_left
register bit_buf_type get_buffer
Definition: jdhuff.h:155
register bit_buf_type register int bits_left
Definition: jdhuff.h:155

Definition at line 114 of file jdhuff.h.

#define BITREAD_STATE_VARS
Value:
register int bits_left; \
bitread_working_state br_state
INT32 bit_buf_type
Definition: jdhuff.h:72
register bit_buf_type get_buffer
Definition: jdhuff.h:155
register bit_buf_type register int bits_left
Definition: jdhuff.h:155

Definition at line 102 of file jdhuff.h.

#define CHECK_BIT_BUFFER (   state,
  nbits,
  action 
)
Value:
{ if (bits_left < (nbits)) { \
{ action; } \
state
register bit_buf_type register int int nbits
Definition: jdhuff.h:155
jpeg_fill_bit_buffer(bitread_working_state *state, register bit_buf_type get_buffer, register int bits_left, int nbits)
Definition: jdhuff.c:292
register bit_buf_type get_buffer
Definition: jdhuff.h:155
register bit_buf_type register int bits_left
Definition: jdhuff.h:155

Definition at line 138 of file jdhuff.h.

#define DROP_BITS (   nbits)    (bits_left -= (nbits))

Definition at line 150 of file jdhuff.h.

#define GET_BITS (   nbits)    (((int) (get_buffer >> (bits_left -= (nbits)))) & ((1<<(nbits))-1))

Definition at line 144 of file jdhuff.h.

#define HUFF_DECODE (   result,
  state,
  htbl,
  failaction,
  slowlabel 
)
Value:
{ register int nb, look; \
if (! jpeg_fill_bit_buffer(&state,get_buffer,bits_left, 0)) {failaction;} \
get_buffer = state.get_buffer; bits_left = state.bits_left; \
nb = 1; goto slowlabel; \
} \
} \
if ((nb = htbl->look_nbits[look]) != 0) { \
DROP_BITS(nb); \
result = htbl->look_sym[look]; \
} else { \
nb = HUFF_LOOKAHEAD+1; \
slowlabel: \
if ((result=jpeg_huff_decode(&state,get_buffer,bits_left,htbl,nb)) < 0) \
{ failaction; } \
get_buffer = state.get_buffer; bits_left = state.bits_left; \
} \
}
UINT8 look_sym[1<< HUFF_LOOKAHEAD]
Definition: jdhuff.h:45
jpeg_huff_decode(bitread_working_state *state, register bit_buf_type get_buffer, register int bits_left, d_derived_tbl *htbl, int min_bits)
Definition: jdhuff.c:398
#define DROP_BITS(nbits)
Definition: jdhuff.h:150
int look_nbits[1<< HUFF_LOOKAHEAD]
Definition: jdhuff.h:44
state
register bit_buf_type register int d_derived_tbl * htbl
Definition: jdhuff.h:200
#define PEEK_BITS(nbits)
Definition: jdhuff.h:147
#define HUFF_LOOKAHEAD
Definition: jdhuff.h:24
jpeg_fill_bit_buffer(bitread_working_state *state, register bit_buf_type get_buffer, register int bits_left, int nbits)
Definition: jdhuff.c:292
register bit_buf_type get_buffer
Definition: jdhuff.h:155
register bit_buf_type register int bits_left
Definition: jdhuff.h:155

Definition at line 176 of file jdhuff.h.

#define HUFF_LOOKAHEAD   8 /* # of bits of lookahead */

Definition at line 24 of file jdhuff.h.

#define PEEK_BITS (   nbits)    (((int) (get_buffer >> (bits_left - (nbits)))) & ((1<<(nbits))-1))

Definition at line 147 of file jdhuff.h.

Typedef Documentation

Definition at line 72 of file jdhuff.h.

Function Documentation

EXTERN ( void  )
EXTERN ( boolean  )
EXTERN ( int  )

Variable Documentation

register bit_buf_type register int bits_left

Definition at line 155 of file jdhuff.h.

register bit_buf_type get_buffer

Definition at line 155 of file jdhuff.h.

register bit_buf_type register int d_derived_tbl* htbl

Definition at line 200 of file jdhuff.h.

boolean isDC

Definition at line 50 of file jdhuff.h.

register bit_buf_type register int d_derived_tbl int min_bits

Definition at line 200 of file jdhuff.h.

register bit_buf_type register int int nbits

Definition at line 155 of file jdhuff.h.

Definition at line 50 of file jdhuff.h.

boolean int tblno

Definition at line 50 of file jdhuff.h.



openhrp3
Author(s): AIST, General Robotix Inc., Nakamura Lab of Dept. of Mechano Informatics at University of Tokyo
autogenerated on Sat May 8 2021 02:42:42