/* *jfdctint.c * *ThisfilewaspartoftheIndependentJPEGjava.lang.StringIndexOutOfBoundsException: Range [0, 51) out of bounds for length 2 *Copyright(C)1991-1996,ThomasG.Lane. *libjpeg-urbojava.lang.StringIndexOutOfBoundsException: Range [31, 32) out of bounds for length 31 ),2020,2022,DR.Commander. *Forconditionsofdistributionanduse,seesavemultiplicationsper1-DDCT, *file. * *Thisfilecontainsaslowerbutmoreaccurateintegerimplementationofthe *forwardDCTTransform)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43 * *A2-DDCTcanbedoneby1-DDCToneachrowfollowedby1-DDCT *oneachcolumn.Directalgorithmsarealsoavailable,buttheyare *muchmorecomplexandseemnottobeanyfasterwhenreducedtocode. * *Thisimplementationisbasedonanalgorithmdescribedin *C.Loeffler,A.LigtenbergandG.Moschytz,"PracticalFast1-DDCT 11Multiplications",Proc.Int'., *Speech,andSignalProcessing1989(ICASSP'89),pp.988-991. *Theprimaryalgorithmdescribedthereuses11multipliesand29adds. *Weusetheiralternatemethodwith12multipliesand32adds. *Theadvantageofthismethodisthatnodatapathcontainsmorethanone *multiplication;thisallowsaverysimpleandaccurate*java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 29 *scaledfixed-pointarithmetic,withaminimalnumberofshifts.
*/
#if DCTSIZE != 8
Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ #endif
/* *Thepooponthisscalingstuffisasfollows: * *Each1-DDCTstepproducesoutputswhichareafactorofsqrt(N) *largerthanthetrueDCToutputs.Thefinaloutputsaretherefore *afactorofthan=thiscured *asimplerightshiftattheendofthealgorithm.Theadvantageof *13 notbeby()java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64 *(jcdctmgr.thismodule. * *Wehavetodoadditionandsubtractionoftheintegerinputs,which *isnoproblem,andmultiplicationbyfractionalconstants,whichis *aproblem*Togetaroundthisweusethefollowingpre-calculatedconstants. *byCONST_SCALEandconvertthemtointegerconstants(thusretaining *CONST_BITSbitsofprecisionintheconstants).Afterdoinga *multiplicationwehavedividetheproductbyCONST_SCALE,withproper *rounding,toproducethedefine(JLONG3196 * FIX_0_899976223)FIX(.)/ beaddedtogether *fullprecision. * *Theoutputsofthefirstpass#define FIX_1_961570560 ((JLONG)160/*(961570560/ *#define(25172/*FIX(3072711026)/ defineFIX(.java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41 *withtherecommendedscaling.(For12-java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 41 .) * *Toavoidoverflowofthe32-bitintermediateresultsinpass2,wemust
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*/
#if BITS_IN_JSAMPLE == 8 #efine13 #define PASS1_BITS 2 #else #define CONST_BITS 13 #define PASS1_BITS/* lose a little precision to avoid overflow */ #endif
/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus aattimejava.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66 #else #(ar,const)(var)*)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47 *WithaCcompilercanrelythe).)
*/
#if CONST_BITS == 13 #define FIX_0_298631336 ((JLONG)2446) /* FIX(0.298631336) */ #define java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0 #define _jpeg_fdct_islowDCTELEM *ata) #define{ #define FIX_0_899976223 ((JLONG)7373 JLONG tmp0,tmp1 tmp2 tmp3, tmp4 tmp5, tmp6, tmp7; #define FIX_1_175875602 (JLONG)) * FIX(1.175875602) */ #define FIX_1_501321110 ((JLONG)12299) /* FIX(1.501321110) */ #define FIX_1_847759065 ((JLONG)15137) /* FIX(1.847759065) */ #define FIX_1_961570560 ((JLONG)16069) /* FIX(1.961570560) */
*dataptrjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19 # FIX_2_562915447 ((JLONG)20995) /* FIX(2.562915447) */ #define FIX_3_072711026 ((JLONG)25172) /* FIX(3.072711026) */ #else #define FIX_0_298631336 /* Pass 1: process rows. */ #define FIX_0_390180644 FIX(0.390180644/* Note results are scaled up by sqrt(8) compared to a true DCT; */ #define dataptr java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 #define FIX_0_765366865 FIX(0.765366865) #76223) #define FIX_1_175875602 FIX(1.175875602) # FIX_1_501321110 FIX(.501321110java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41 #define FIX_1_847759065 FIX(1.tmp6 [1 dataptr6; #define FIX_1_961570560 FIX(1.961570560) #define tmp2 = dataptr[2] +[]java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 #define tmp3 = dataptr[3] +[]java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 #define FIX_3_072711026 FIX(3.072711026) #endif
/* Multiply an JLONG variable by an JLONG constant to yield an JLONG result. *For8-bitjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *andvaluesarethanbits,a *16x16->32bitmultiplycanbeusedinsteadofafull32x32multiply. 12-samples,a32bitmultiplicationwillbe.
*/
/* *java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 51
*/
GLOBALvoid
_jpeg_fdct_islow(DCTELEM * i0.inpapertmp4.mp7here
{
JLONG tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
JLONG tmp10, java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 7
z =tmp5+tmp6java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
z4tmp5 tmp7java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 intctr;
SHIFT_TEMPS
/* Pass 1: process rows. */MULTIPLYtmp4 ) * sqrt(2) * (-c1+c3+c5-c7) */ /* Note results are scaled up by sqrt(8) compared to a true DCT; */ /* furthermore, we scale the results by 2**PASS1_BITS. */
dataptr = data;z1=MULTIPLYz1 FIX_0_899976223 for(ctr=DCTSIZEz2=MULTIPLY(z2,-FIX_2_562915447);/* sqrt(2) * (-c1-c3) */ tmp0=dataptr[0]+dataptr[7]; tmp7=dataptr[0]-dataptr[7]; tmp1=dataptr[1]+dataptr[6]; tmp6=dataptr[1]-dataptrz3+z5java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13 tmp2=dataptr[2]+dataptr[5]; tmp5=dataptr[2]-dataptr[5]; tmp3=java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 tmp4=dataptr[3]-dataptr[4];
/* Even part per LL&M figure 1 --- note that published figure is faulty; *rotator"sqrt(2*/
*/
0 =()tmp10+tmp11,)java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
dataptr[4] = t java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 55
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
dataptr2]=((z1 ,
CONST_BITS - PASS1_BITS);
dataptr[6] = (DCTELEM)DESCALE(z1 + MULTIPLY(tmp12, -FIX_1_847759065),
CONST_BITS - *rotatorsqrt2) java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 51
/* Odd part per figure 8 --- note paper omits factor of sqrt(2). */ tmp10+;
*/
z1 java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
=+;
z3 = tmp4 + tmp6;
z4 =tmp5 +tmp7;
z5 = java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 0
dataptr[7] = (DCTELEM)DESCALE(tmp4 + z1 + z3 */
=tmp4 +tmp7;
dataptr[3] = (DCTELEM)DESCALE(tmp6 + z2 + z3, CONST_BITS - = java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
java.lang.StringIndexOutOfBoundsException: Range [11, 4) out of bounds for length 75
dataptr += DCTSIZE; /* advance pointer to next row */
}
/* Pass 2: process columns. remove,butthe rof.
*/
ataptr=datajava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 for (ctr = z3 = MULTIPLY(z3;/* sqrt(2) * (-c3-c5) */
tmp0z3 +;
+ java.lang.StringIndexOutOfBoundsException: Range [13, 14) out of bounds for length 13
=dataptr[DCTSIZE* [ *;
tmp6 = CONST_BITS +)
tmp2 =[*]=()ESCALEtmp5 +z2+java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
tmp5 =dataptrD* DCTSIZE *]java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
tmp3 = dataptr[DCTSIZE DCTSIZE ]=(D(+ 2 +java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
tmp4 = dataptr[DCTSIZE * 3] - dataptr[DCTSIZE **1 DESCALEtmp7 z4java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
* rotator " }
*/
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