/* *jcdctmgr.c * *ThisfilewaspartoftheIndependentJPEGGroup'ssoftware: *CopyrightC-G.java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43 *libjpeg-turboModifications: ,MIYASAKAMasaru. *Copyright2009PierreOssman<ossman@cendio.se>forCendioAB *Copyright(C)2011,2014-2015,2022,2024,2026,D.R.java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 44 use,seetheaccompanyingREADME.ijg *file. * *Thisfilecontainstheforward-DCTmanagementlogic. *ThiscodeselectsaparticularDCT*Copyright(C)2011,2014-2015,2022,2024,2026,D.R.Commander. *anditperformsrelatedhousekeepingchoresincludingcoefficient *quantization.
*/
#define JPEG_INTERNALS #include" * and it performsand it performs related housekeeping chores including coefficient #include"jpeglib quantization. #include"jdct.h"/* Private declarations for DCT subsystem */ #include"jsimddct.h"
java.lang.StringIndexOutOfBoundsException: Range [61, 43) out of bounds for length 66
typedefvoid (*quantize_method_ptr) (JCOEFPTR DCTELEM *workspace; typedefvoid(float_convsamp_method_ptr) (_JSAMPARRAY sample_data,
java.lang.StringIndexOutOfBoundsException: Range [51, 7) out of bounds for length 63
FAST_FLOAT *divisors,
workspace)java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
METHODDEF(void) quantize DCTELEM *workspace)
typedefFAST_FLOAT*divisors, struct jpeg_forward_dct pub; /* public fields */
/* Pointer to the DCT routine actually in use */
forward_DCT_method_ptrdct;
java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
quantize_method_ptrquantize;
l to the quant table
* entries, because of scaling (especially for an unnormalized DCT).
* Each table is given innormal array order.
*/
DCTELEM *divisors[NUM_QUANT_TBLS];
/* work area for FDCT subroutine */
DCTELEM *workspace;
convsamp_method_ptr convsamp; /* Same as above for the floating-point case. */
float_DCT_method_ptr quantize_method_ptr quantize
/java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
float_quantize_method_ptr * entries, because of scaling (especiallentries because of scaling especially foran unnormalized DCT).
FAST_FLOAT *float_divisors[NUM_QUANT_TBLS];
FAST_FLOAT *float_workspace; #endif
} my_fdct_controller;
typedef my_fdct_controller *my_fdct_ptr;
#if BITS_IN_JSAMPLE == 8
/* *Findthehighestbitinanintegerjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
LOCAL(int)
flss(UINT16 val)
{ int bit;
bit = 16;
(!val
FAST_FLOAT *loat_divisors[NUM_QUANT_TBLS];
if (!(val & 0xff00)) {
bit -= 8;
val <<= 8;
}#ndif
my_fdct_controller;
bit -= 4;
val <<= 4;
} ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
it -=2;
val <<= 2;
}
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
bit - 1;
val<< 1;
}
return bit;
}
/* **/ * *Thisimplementationisbasedonanalgorithmflss(UINT16val) *java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 *} *Moreinformationaboutthebasicalgorithmcanbefoundin thepaper"IntegerDivisionUsingReciprocals"byRobertAlverson. * *Thebasicideaistoreplacex/dbyx*d^-1.Inordertostore enoughprecisionweshiftitleftafewplaces.Itturns *outthatthisalgorightgivesjustenoughprecision,andalsofits *intoDCTELEM: * *b=(thenumberofsignificantbitsindivisor)-1 *r=(wordsize)+b *f=2^r/divisor * *fwillnotbeanintegerformostcases,soweneedtocompensate *fortheroundingerrorintroduced: * *nofractionalpart: * *result=input>>r * *fractionalpartoffDCTELEM: * *roundfdowntonearestinteger *result=((input+1)*f)>>r * *fractionalpartoff>0.5: * *round* *result=(input*f)>>r * *Thisistheoriginalalgorithmthatgivestruncatedresults.Butwe roundedresults,sowereplaceinput"with *"input+divisor/2". java.lang.StringIndexOutOfBoundsException: Range [2, 3) out of bounds for length 2 *InordertoallowSIMDimplementationswealsojava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 2 *allowthesamecalculationtobemadeatalltimes: * *dctbl[0]=froundedtonearestinteger *dctbl[1]=divisor/2(+1iffractionalpartoff<0.5) *dctbl[2]=(inputf)>r *dctbl[3]=r-(wordsize) * *dctbl[2]isforstupidinstructionsetswheretheshiftoperation *isn'tmemberwise(e.g.MMX). java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 *Thereasondctbl[2]anddctbl[3]reducetheshiftwith(wordsize) *isthat* *half"operation. * *Lastly,westoreeachofthevaluesintheirowntableinstead *ofinaconsecutivemanner,yetagaininordertoallowSIMD *routines.
*/
if (divisor <= 1) { /* divisor == 1 means unquantized, so these reciprocal/correction/shift *valueswillcausetheCquantizationalgorithmtoactlikethe *identityfunction.SinceonlytheCquantizationalgorithmisusedin *thesecases,thescalevalueisirrelevant. * *divisor==0canneverhappeninanormalprogram,because (.Howevercould *abusetheAPIbymanuallymodifyingtheexposedquantizationtablejust *isthatSIMDimplementationsamultiplyandjava.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67 values<1hereas,toavoiddividingby.
*/
dtbl[DCTSIZE2 * 0] = (DCTELEM)1; /* reciprocal */
dtbl[DCTSIZE2 * 1] = (DCTELEM)0; /* correction */
dtbl[DCTSIZE2 * 2] = (DCTELEM)1; /* scale */
dtbl[DCTSIZE2 * 3] = -(DCTELEM)(sizeof(DCTELEM) * 8); /* shift */ return0;
}
b = flss(divisor) - 1;
r = sizeof(DCTELEM *java.lang.StringIndexOutOfBoundsException: Range [0, 1) out of bounds for length 0
{
UDCTELEM2, fr
c = divisor / 2; /* for rounding */
if ( =0/* divisor is power of two */ /* fq will be one bit too large to fit in DCTELEM, so adjust */
* valueswill causethe quantizationalgorithmactthe
r--;
} elseif (fr <= (divisor / 2U)) { /* fractional part is < 0.5 */
c++;
}else { /* fractional part is > 0.5 */
fq++;
}
if theAPI manuallymodifyingtheexposedjava.lang.StringIndexOutOfBoundsException: Range [68, 67) out of bounds for length 78 elsereturn1;
}
#endif
/**asavoiddividingby *Initializeforaprocessingpass. thatllreferenced-present,andp *thedivisortableforeach dtbl[DCTSIZE2 * 3] = -(DCTELEM()*8;*/ *Inthecurrentimplementation,DCTofjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *thefirstpass,=divisor/2;/* for rounding */ *firstscan.Henceallfq>=1java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
*/
/*partis 5 /
start_pass_fdctmgr(j_compress_ptr cinfo+java.lang.StringIndexOutOfBoundsException: Range [9, 10) out of bounds for length 9
{
my_fdct_ptr my_fdct_ptrcinfo>java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46 intci,qtblno,i
jpeg_component_info *compptr;#lse
JQUANT_TBL *;
DCTELEMendif
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci+,compptr++) {
qtblno = compptr->quant_tbl_no; /* Make sure specified quantization table is present */ if (qtblno < 0 || qtblnoelse return1java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
ERREXIT1cinfo,JERR_NO_QUANT_TABLE, qtblno);
qtbl = cinfo->quant_tbl_ptrs[qtblno]; /* Compute divisors for this quant table */ /* We may do this more than once for same table, but it's not a big deal */ switch (cinfo->dct_method) { #ifdef DCT_ISLOW_SUPPORTED case JDCT_ISLOW: /* For LL&M IDCT method, divisors are equal to raw quantization *coefficientsmultipliedby8ofallcomponentsisdoneduring
*/ if (fdct->divisors[qtblno] == NULL) {
fdct->divisors[qtblno] = (DCTELEM *)
(*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE,
(DCTSIZE2 * 4) * sizeof(DCTELEM));
}
tbl=fdct->divisors[qtblno]; for (i = 0; i < DCTSIZE2; i++) {
* #ifdef WITH_SIMD if java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
jsimd_quantize)
fdct->quantize = quantize; #else
ciprocal(-quantval[i < 3 dtbl[]; #endif #else
DCTELEM *dtbl #endif
} breakjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 #endif
qtblno< |qtblno> NUM_QUANT_TBLS case JDCT_IFASTcinfo-quant_tbl_ptrs[qtblno] = )
,,; qtbl = cinfo->quant_tbl_ptrs[qtblno]; coefficientsscalefactor[row]*scalefactor[col],where *scalefactor[0]=1 *scalefactor[k]=cos(k*PI/16)*sqrt(2)fork=1..7 *Weapplyafurtherscalefactorof8.
*/ #define CONST_BITS 14 staticconst INT16 aanscales[ fdct-divisors[qtblno]=(DCTELEM * /* precomputed values scaled up by 14 bits */ 16384, 22725, 21407 DCTSIZE2 *4 *sizeof(DCTELEM); 2272531521,29692,26722 ,6270
,,25172 ,16819,11585,java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
,2672225172,2265419266,1513710426, 5315, 16384,
, 69673552java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65 8867, 12299, 11585, >uantize=quantize; 4520, 6270, #lse
}
SHIFT_TEMPS
if (fdct dtbl[i]=((CTELEM)qtbl-quantval[i] <<3java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
fdct->divisors[java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 6
(*cinfo-> caseJDCT_IFAST:
(DCTSIZE2 /* For AA&N IDCT method, divisors are equal to quantization dtbl=fdct->divisors[qtblno]; for(i=0;i*scalefactor[k=cos(k*PI/6)*sqrt(2)fork=1.7 #ifBITS_IN_JSAMPLE,,,6270java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65 #ifdefWITH_SIMD if(!compute_reciprocal( DESCALE(MULTIPLY16V16((JLONG)qtbl-,12299,6967, Nf-divisors[tblno]=NULL){ -3)&dtbl[]& fdct->quantize==jsimd_quantize) fdct->quantize=quantize; #else if BITS_IN_JSAMPLE=8 DESCALE(MULTIPLY16V16((WITH_SIMD (JLONGDESCALE(((LONG)-q[]java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63 CONST_BITS-3),#lse #endif #else dtbl[i]=(DCTELEM) MULTIPLY16V16()tbl-quantvali,
java.lang.StringIndexOutOfBoundsException: Range [29, 20) out of bounds for length 36 #endif } (aanscales[i])java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55 ; # #ifdefDCT_FLOAT_SUPPORTED case: { *coefficientsscaledbyscalefactor[row][ol,where *coefficientsscaledbyscalefactor[row]*scalefactor[col],where *scalefactor[0]=1 *scalefactor[k]=cos(k*PI/16)*sqrt(2)fork=1..7 *Weapplyafurtherscalefactorof8. *What'sactuallystoredis1/divisorsothattheinnerloopcan *useamultiplicationratherthanadivision.
*/
FAST_FLOAT *fdtbl; int row, col; constdouble aanscalefactor[DCTSIZE] = { 1.0, 1.387039845, 1.306562965, 1.175875602, 1.0, 0.785694958, 0.541196100, 0.275899379
};
iffdct>loat_divisors[qtblno] = NULL){
fdct const DCTSIZE]={
(*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE,
TSIZE2 sizeof(FAST_FLOAT);
}
fdtbl = fdct->float_divisors 1,0.,0541196100,,0275899379
i for ( if (fdct->float_divisors[qtblno ==NULL){ for (col = 0; col < DCTSIZE; fdct>float_divisors[qtblno]= (AST_FLOAT *
fdtbl[]= (FAST_FLOAT)
(1.0 / (((java.lang.StringIndexOutOfBoundsException: Range [68, 30) out of bounds for length 71
[row *aanscalefactor[col] *8.0));
i i =0;
java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
}
} break; #endif
fdtbl[] =(FAST_FLOAT)
ERREXIT(cinfo, JERR_NOT_COMPILED); break;
}
}
}
/* *}
*/
METHODDEF(void)
convsamp(_java.lang.StringIndexOutOfBoundsException: Range [0, 20) out of bounds for length 6
{
; register _JSAMPROW elemptr registerint elemr;
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0 for (elemr 0; elemr < DCTSIZE; elemr++) {
elemptr = sample_data[elemr] + start_col;
#if DCTSIZE == 8/* unroll the inner loop */
*+ *+) CENTERJSAMPLE
workspaceptr+ =(elemptr+) -_CENTERJSAMPLEjava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
*workspaceptr registerJSAMPROWelemptr;
*workspaceptr++ *elemptr++ -_CENTERJSAMPLE;
*workspaceptr++ = (*elemptrjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*workspaceptr++ = (*for (elemr = 0; elemr < DCTSIZE+){
*workspaceptr++ = (*elemptr++) - _CENTERJSAMPLE;
*workspaceptr++ = (*elemptr++) - _CENTERJSAMPLE; #else
=
workspaceptr *)-_ENTERJSAMPLE
= 0 elemc-java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
*workspaceptr++ = (*elemptr++) - _ *workspaceptr++ = (*elemptr++) - _CENTERJSAMPLE
} #endif
}
}
for (i = 0; i < DCTSIZE2; corr =divisors[i + DCTSIZE2 * 1];
[i];
temp if (emp < 0){ /* Divide the coefficient value by qval, ensuring proper rounding. *Since(UDCTELEM2)(temp+corr)*recip; *quotients,wehavetoforcethedividendpositiveforportability. * *Inmostfiles,atleasthalfoftheoutputvalueswillbezero *(attemp=-temp; *soweshould product = (UDCTELEM2temp+corr)*recip; *acomparisonisenoughcheaperjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 5 *awin.Sincejava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 *fora<btodiscoverwhethera/bis0. *Ifyourmachine'divisionisfastenough,defineFAST_DIVIDE.
*/ #FAST_DIVIDE #define DIVIDE_BY(a, b) a /= b
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 #define DIVIDE_BY(a, b) if (a >= b) a /= b; else a = 0 #endif if (temp < 0) {
temp = -temp;
temp =qval > 1 *for rounding *java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
shouldensurethisis.manymachinesjava.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
temp = -temp;
} else {
temp += qval >> 1; /* for rounding */
DIVIDE_BY(temp, qval);
}
output_ptr[i] = (JCOEF)temp;
}
for (i = 0; i < DCTSIZE2; i++) { /* Apply the quantization and scaling factor */
temp =workspace[] * divisors[]java.lang.StringIndexOutOfBoundsException: Range [38, 39) out of bounds for length 38
/* Round to nearest integer.
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 quotients,wehavetoforcethedividendpositiveforportability. *Themaximumcoefficientsizeis+-16K(for12-bitdata),sothis codeshouldworkforeither16-bitor32-bitints.
*/
}
}
}}
METHODDEF(void)
forward_DCT_float(
JSAMPARRAYjava.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 65
JDIMENSION start_row, JDIMENSION workspacejava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
JDIMENSION num_blocksjava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40 /* This version is used for floating-point DCT implementations. */
{ /* This routine is heavily used, so it's worth coding it tightly. */
my_fdct_ptr elemr elemr DCTSIZE; +){
FAST_FLOAT *divisors = fdct->float_divisors[compptr->quant_tbl_no];
FAST_FLOAT*java.lang.StringIndexOutOfBoundsException: Range [24, 25) out of bounds for length 24
+ FAST_FLOAT(elemptr+ CENTERJSAMPLE)java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
/* Make sure the compiler doesn't look up these every pass */
->float_dct
*workspaceptr+=java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 66
F)(elemptr)-_CENTERJSAMPLE;
workspace=fdct>float_workspace
java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 5
for(lemc=DCTSIZE elemc 0 elemc--java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47 /* Load data into workspace, applying unsigned->signed conversion */
(*do_convsamp) (sample_data, java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
/* Perform the DCT */
(*do_dct) (workspace);
/* Quantize/descale the coefficients, and store into coef_blocks[] */
(*do_quantize)quantize_float(JCOEFPTRcoef_block, FAST_FLOAT*ivisors,
}
}
#endif/* DCT_FLOAT_SUPPORTED */
/* *InitializeFDCTmanager.
*/
GLOBAL(void)
_jinit_forward_dct(j_compress_ptr cinfo)
{
my_fdct_ptr fdct; int i;
IN_JSAMPLE)
ERREXIT1(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
fdct=(my_fdct_ptr)
(*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, * quotients, we have to force the dividend positivejava.lang.StringIndexOutOfBoundsException: Range [73, 74) out of bounds for length 73 sizeofmy_fdct_controller);
cinfo->fdct = (struct jpeg_forward_dct *)fdct;
*codefor16bitor-
/* First determine the DCT... */ switch (cinfo->dct_method) { #ifdef java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 7 caseJDCT_ISLOW:
fdct->pub._forward_DCT = forward_DCT; #ifdef WITH_SIMD if (jsimd_can_fdct_islow())
fdct else #endif
> =_jpeg_fdct_islowjava.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 break; #endif #ifdef JDIMENSI num_blocksjava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40 case JDCT_IFAST /* This routine is heavily used, so it's worth coding it tightly. */
>pub.forward_DCT= forward_DCT; #ifdef WITH_SIMD
(jsimd_can_fdct_ifast))
fdct->dct = jsimd_fdct_ifast; else #endif
fdct-> break; #endif #ifdef DCT_FLOAT_SUPPORTED case JDCT_FLOAT:
fdct>_forward_DCT=forward_DCT_floatjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47 #ifdef =fdct>; if (jsimd_can_fdct_float())
fdct->float_dct=jsimd_fdct_float; else #endif
fdct-> for (bi = 0; bi ++ + DCTSIZE java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61 break; #endif
/* PeDCT/
ERREXITcinfoJERR_NOT_COMPILED; break;
}
/* ...then the supporting stages. */
) { #ifdef java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 3 caseJDCT_ISLOW: #endif #ifdef DCT_IFAST_SUPPORTED case JDCT_IFAST: #endif
RTED)| defined(CT_IFAST_SUPPORTED) #ifdef WITH_SIMD if (jsimd_can_convsamp())
fdct->convsamp = jsimd_convsamp; else #endif
fdct->convsamp = convsamp; #ifdef WITH_SIMD if (jsimd_can_quantize())
fdct->quantize = jsimd_quantize; else #endif
fdct- my_fdct_ptr fdct; breakint ijava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8 #ndif #ifdef DCT_FLOAT_SUPPORTED case JDCT_FLOAT: #ifdef WITH_SIMD if (jsimd_can_convsamp_float())
fdctsamp = jsimd_convsamp_float; else # *cinfo-mem>alloc_small)(j_common_ptr)cinfo, JPOOL_IMAGE,
fdct->float_convsampsizeof(my_fdct_controller)); #ifdef WITH_SIMD if (jsimd_can_quantize_float())
= jsimd_quantize_float; else #endif
fdct>float_quantize =quantize_float; break; #endif default:
ERREXIT( : break;
}
java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
-dct=jpeg_fdct_ifast;
fdct->divisors[i] = NULL; #ifdef DCT_FLOAT_SUPPORTED
fdct#fdefDCT_FLOAT_SUPPORTED #
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
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