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jdhuff.h File Reference
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Data Structures | |
| struct | bitread_perm_state |
| struct | bitread_working_state |
| struct | d_derived_tbl |
Defines | |
| #define | HUFF_LOOKAHEAD 8 |
| #define | BIT_BUF_SIZE 32 |
| #define | BITREAD_STATE_VARS |
| #define | BITREAD_LOAD_STATE(cinfop, permstate) |
| #define | BITREAD_SAVE_STATE(cinfop, permstate) |
| #define | CHECK_BIT_BUFFER(state, nbits, action) |
| #define | GET_BITS(nbits) (((int) (get_buffer >> (bits_left -= (nbits)))) & ((1<<(nbits))-1)) |
| #define | PEEK_BITS(nbits) (((int) (get_buffer >> (bits_left - (nbits)))) & ((1<<(nbits))-1)) |
| #define | DROP_BITS(nbits) (bits_left -= (nbits)) |
| #define | HUFF_DECODE(result, state, htbl, failaction, slowlabel) |
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 | |
| boolean | isDC |
| boolean int | tblno |
| boolean int d_derived_tbl ** | pdtbl |
| register bit_buf_type | get_buffer |
| register bit_buf_type register int | bits_left |
| register bit_buf_type register int int | nbits |
| register bit_buf_type register int d_derived_tbl * | htbl |
| register bit_buf_type register int d_derived_tbl int | min_bits |
Define Documentation
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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;Definition at line 107 of file jdhuff.h. Referenced by decode_mcu(), decode_mcu_AC_first(), decode_mcu_AC_refine(), decode_mcu_DC_first(), and decode_mcu_DC_refine(). |
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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_leftDefinition at line 114 of file jdhuff.h. Referenced by decode_mcu(), decode_mcu_AC_first(), decode_mcu_AC_refine(), decode_mcu_DC_first(), and decode_mcu_DC_refine(). |
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Value: register bit_buf_type get_buffer; \ register int bits_left; \ bitread_working_state br_state Definition at line 102 of file jdhuff.h. Referenced by decode_mcu(), decode_mcu_AC_first(), decode_mcu_AC_refine(), decode_mcu_DC_first(), and decode_mcu_DC_refine(). |
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Value: { if (bits_left < (nbits)) { \
if (! jpeg_fill_bit_buffer(&(state),get_buffer,bits_left,nbits)) \
{ action; } \
get_buffer = (state).get_buffer; bits_left = (state).bits_left; } }Definition at line 138 of file jdhuff.h. Referenced by decode_mcu(), decode_mcu_AC_first(), decode_mcu_AC_refine(), decode_mcu_DC_first(), decode_mcu_DC_refine(), and jpeg_huff_decode(). |
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Definition at line 150 of file jdhuff.h. Referenced by decode_mcu(). |
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Definition at line 144 of file jdhuff.h. Referenced by decode_mcu(), decode_mcu_AC_first(), decode_mcu_AC_refine(), decode_mcu_DC_first(), decode_mcu_DC_refine(), and jpeg_huff_decode(). |
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Value: { register int nb, look; \
if (bits_left < HUFF_LOOKAHEAD) { \
if (! jpeg_fill_bit_buffer(&state,get_buffer,bits_left, 0)) {failaction;} \
get_buffer = state.get_buffer; bits_left = state.bits_left; \
if (bits_left < HUFF_LOOKAHEAD) { \
nb = 1; goto slowlabel; \
} \
} \
look = PEEK_BITS(HUFF_LOOKAHEAD); \
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; \
} \
}Definition at line 176 of file jdhuff.h. Referenced by decode_mcu(), decode_mcu_AC_first(), decode_mcu_AC_refine(), and decode_mcu_DC_first(). |
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Definition at line 24 of file jdhuff.h. Referenced by jpeg_make_d_derived_tbl(). |
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Typedef Documentation
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Definition at line 72 of file jdhuff.h. Referenced by jpeg_fill_bit_buffer(), and jpeg_huff_decode(). |
Function Documentation
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Variable Documentation
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Definition at line 200 of file jdhuff.h. Referenced by jpeg_fill_bit_buffer(), and jpeg_huff_decode(). |
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Definition at line 200 of file jdhuff.h. Referenced by jpeg_fill_bit_buffer(), and jpeg_huff_decode(). |
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Definition at line 200 of file jdhuff.h. Referenced by jpeg_huff_decode(). |
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