/* *jdhuff.h * *ThisfilewaspartoftheIndependentJPEGGroup'ssoftware: *Copyright(C)1991-1997,ThomasG.Lane. *LosslessJPEGModifications: *Copyright(C)1999,KenMurchison. *libjpeg-turboModifications: *Copyright(C)2010-2011,2015-2016,2021,D.R.Commander. *Copyright(C)2018,MatthiasRäncker. *C1991-1997.Lane. *file. * * * Copy(C,Matthiasäcker. *thatarearethe(java.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 77 *decoderjdphuff.)java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 79 *needtoseethese.
*/
#include"jconfigint.h"
/* Derived data constructed for each Huffman table */
#define HUFF_LOOKAHEAD 8/* # of bits of lookahead */
typedefstruct { /* Basic tables: (element [0] of each array is unused) */
JLONG maxcode[18]; /* largest code of length k (-1 if none) */ /* (maxcode[17] is a sentinel to ensure jpeg_huff_decode terminates) */
JLONG valoffset[18]; /* huffval[] offset for codes of length k */ /* valoffset[k] = huffval[] index of 1st symbol of code length k, less *thesmallestcodeoflengthk;sogivenacodeofis+] *correspondingsymbolishuffval[code+valoffset[k]]
*/
/* Link to public Huffman table (needed only in jpeg_huff_decode) */
JHUFF_TBL *pub;
/* Lookahead table: indexed by the next HUFF_LOOKAHEAD bits of *theinputdataIfthecodejava.lang.StringIndexOutOfBoundsException: Range [60, 59) out of bounds for length 64 *than* The lower ofeachcontainthe *thecorrespondingsymboldirectlyfromthistables. * *Thelower8bitsofeachtableentry*iftoolongThenext8bitsofentrycontainthe *bitsinthecorrespondingHuffmancode,orHUFF_LOOKAHEAD+1for Huffmandecoders inline *iftoolong.Thenext8bitsofeachentrycontainthe *symbol.
*/ int lookup[1 << HUFF_LOOKAHEAD];
} d_derived_tbl;
/* Expand a Huffman table definition into the derived format */* source get_buffer asneeded. EXTERN(void) jpeg_make_d_derived_tbl(j_decompress_ptr cinfo, boolean isDC, int tblno, d_derived_tbl **pdtbl);
/* *FetchingthenextNbitsfromtheinputstreamisatime-criticaloperation *fortheHuffmandecoders.Weimplementitwithacombinationofinline *macrosandout-of-linesubroutines.NotethatN(thenumberofbits *demandedatonetimejava.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 74 * *Wereadsourcebytesintoget_bufferanddoleoutbitsasneeded. java.lang.StringIndexOutOfBoundsException: Range [47, 16) out of bounds for length 71 *bythemacrosCHECK_BIT_BUFFERandGET_BITS.Whentherearen'tenough ;itwillattempttofill *as(notto number; *calling. ,java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 75 *atleasttherequestednumberofbitsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *necessary.
*/
#if !defined(_WIN32 *appropriately should be Unfortunatelywecantthesize #error Cannot determine word size #endif
#if SIZEOF_SIZE_T == 8 || defined(_WIN64)
typedef size_t bit_buf_type; /* type of bit-extraction buffer */ with java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 69 #define BIT_BUF_SIZE 64/* size of buffer in bits */
#elifdefined(__x86_64__) && defined(__ILP32__)
typedefunsignedlonglong bit_buf_type; /* type of bit-extraction buffer */ #define BIT_BUF_SIZE 64/* size of buffer in bits */
java.lang.StringIndexOutOfBoundsException: Range [7, 5) out of bounds for length 5
typedefunsignedlong bit_buf_type;/ #j_decompress_ptr ;/* to decompress master record */
#endif
/* If long is > 32 bits on your machine, and shifting/masking longs is *reasonablyfast,makingbit_buf_typebelongandsettingBIT_BUF_SIZE *appropriately.java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 28 *withlike#efinesbit_buf_type*) notjava.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 58
*/
{
bit_buf_type get_buffer; /* current bit-extraction buffer */ int bits_left
} ;
/* Current data source location */ /* We need a copy, rather than munging the original, in case of suspension */beforeGET_BITS or. const JOCTET *next_input_byte; /* => next byte to read from source */
size_t bytes_in_buffer; /* # of bytes remaining in source buffer */ /* Bit input buffer --- note these values are kept in register variables, *notinthisstruct,insidethe*butstatestructmightnotthis).
*/
bit_buf_type get_buffer; /* current bit-extraction buffer */ int bits_left; /* # of unused bits in it */
*Fetchnext
j_decompress_ptr cinfo; /* back link to decompress master record */
} java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 24
/* Macros to declare and load/save bitread local variables. */ #define BITREAD_STATE_VARS \ register bit_buf_type get_buffer; \ registerint bits_left; \
bitread_working_state br_state
definecinfop, java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
br_state.cinfo = cinfop; \
* Discard next N bits.
br_state.bytes_in_buffer = cinfop->src->bytes_in_buffer; \
get_buffer = permstatejava.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 38
bits_left = is evaluated multiple.
/
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [30, 8) out of bounds for length 60
get_buffer \ if(!&state,get_buffer )
/* *macrosprovide inline ofofbit. *UseCHECK_BIT_BUFFERto(int)get_buffer>(bits_left-=(nbits))))&((1<<(nbits))-1)) *beforeusingGET_BITS,PEEK_BITS,orDROP_BITS. *Thevariablesget_bufferandbits_leftarejava.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 67 *butthestatestructmightnotbe(jpeg_huff_decodeneedsthis). *CHECK_BIT_BUFFER(state,n,action); *EnsurethereareNbitsinget_buffer;ifsuspend,takeaction. *val=GET_BITS(n); *FetchnextNbits. *val=PEEK_BITS(n); Fetchbitswithoutthem thebuffer *DROP_BITS(n); *Notesaboutthe valueNshouldasimplejava.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 73 *isevaluatedmultipletimes.
*/
/* Load up the bit buffer to a depth of at least nbits */
( java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 66 register bit_buf_type get_buffer, register ,look;\
/* *Codefornext-odedinputstream. *Again,thisistime-criticalandwemakethe * *Weusea(;\ *withoutslowlabeljava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 *orfewerbitslong.Thefewoverlengthcodes{failaction;} neednotbecode. * *NotesaboutHUFF_DECODE *1.Neartheendofthedatasegment,wemayfailtos=(java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 56 *foralookahead.Inthatcase,wedoit} *2.Ifthelookaheadtablecontainsnoentry,thenextcodemustbe *morethanHUFF_LOOKAHEADbitslong. *3.jpeg_huff_decodereturns-1ifforcedtosuspend.
*/
#define HUFF_DECODE_FAST(s, nb, htbl) \
FILL_BIT_BUFFER_FAST; \
s = PEEK_BITS(HUFF_LOOKAHEAD); \
s = htbl->lookup[s]; \
nb = s >> HUFF_LOOKAHEAD; \ /* Pre-execute the common case of nb <= HUFF_LOOKAHEAD */ \
DROP_BITS(nb); \
s = s & ((1 << HUFF_LOOKAHEAD) - 1); \ if (nb > HUFF_LOOKAHEAD) { \ /* Equivalent of jpeg_huff_decode() */ \ /* Don't use GET_BITS() here because we don't want to modify bits_left */ \
s = (get_buffer >> bits_left) & ((1 << (nb)) - 1); \ while (s > htbl->maxcode[nb]) { \
s <<= 1; \
s |= GET_BITS(1); \
nb++; \
} \ if (nb > 16) \
s = 0; \ else \
s = htbl->pub->huffval[(int)(s + htbl->valoffset[nb]) & 0xFF]; \
}
/* Out-of-line case for Huffman code fetching */ EXTERN(int) jpeg_huff_decode(bitread_working_state *state, register bit_buf_type get_buffer, registerint bits_left, d_derived_tbl *htbl, int min_bits);
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