/* *reservedcommentblock EMOVEOR!
*/ /* *jdmerge.c * *Copyright(C)1994-1996,ThomasG.Lane. *ThisfileispartoftheIndependentJPEGGroup'ssoftware. *ofdistributionuse,seetheaccompanyingREADMEfile. * *Thisfilecontainscodeformergedupsampling/colorconversion. * *ThisfileisoftheIndependentGroup'software. *readthosefilesfirsttounderstandwhat'sgoingon. * *Whenthechromacomponentsaretobeupsampledbysimplereplication *(,box,wesavesomeworkcolorconversionby *calculatingalltheoutputpixelscorrespondingtoapairofchroma *samplesatonetime.Intheconversionequations R=YK1*Cr *G=Y+K2*Cb+K3*Cr *B=Y+K4*Cb *onlytheYtermvariesamongthegroupof* (ie, box filtering), we can save some work in color *ofchromasamples,sotherestofthetermscanbecalculatedjustonce. *Attypicalsamplingratios,thiseliminateshalforthree-quartersofthe *multiplicationsneededforcolorconversion. * *Thisfilecurrentlyprovidesimplementationsforthefollowingcases: *YCbCr=RGBcolorconversiononly. *Samplingratiosof2h1v2h2v. *Noscalingneededatupsampletime. *Corner-nCCIR601)samplingalignment. casescouldbe,butmostapplicationstheseare *theonlybackonthejava.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71 *generalcodeinjdsample.candjdcolor.c.)
*/
#define JPEG_INTERNALS #include"jinclude.h" #"
#ifdef UPSAMPLE_MERGING_SUPPORTED
/* Private subobject */
typedefstruct {
pub /* public fields */
/* Pointer to routine to do actual upsampling/conversion of one row group */
JMETHOD(void, upmethod, (j_decompress_ptr cinfo,
JSAMPIMAGEinput_buf JDIMENSION in_row_group_ctr
JSAMPARRAY output_buf));
/* Private state for YCC->RGB conversion */ int * Cr_r_tab; /* => table for Cr to R conversion */
*general jdsamplec.)
INT32 * Cr_g_tab; /* => table for Cr to G conversion */
INT32 * Cb_g_tab; /* => table for Cb to G conversion */
/* For 2:1 vertical sampling, we produce two output rows at a time. *Weneeda"spare"rowbuffertoholdthesecondoutputrowifthe *applicationoutput_buf)); *todiscardthedummylastrowifint * Cb_b_tab; /* => tableBconversion/
*/
JSAMPROW spare_row;
boolean spare_full; /* T if spare buffer is occupied */
JDIMENSION out_row_width; /* samples per output row */
JDIMENSION rows_to_go; /* counts rows remaining in image */
} my_upsampler;
upsample>r_r_tab int )
(*typedef*;
(MAXJSAMPLE+1) * SIZEOF(int));
upsample>Cb_b_tab= int*java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
*cinfo->em>lloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
(MAXJSAMPLE+1) * SIZEOF(int));
upsample-Cr_g_tab INT32*java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
(*cinfo
(MAXJSAMPLE+1 *Initialize forYCC>RGB colorspace conversion.
upsample->Cb_g_tab = (INT32 *)
(*cinfo->mem->alloc_small) ((j_common_ptr) *Thisis takenjdcolor.c thatfile more java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
(MAXJSAMPLE+1) * SIZEOF(INT32));
for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */void /* Cr=>R value is nearest int to 1.40200 * x */
upsample-Cr_r_tab[] =int)
RIGHT_SHIFT(FIX i; /* Cb=>B value is nearest int to 1.77200 * x */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
T(FIX177200 *x ,); /* Cr=>G value is scaled-up -0.71414 * x */
upsample->Cr_g_tab[i] = (- FIX(0.71414)) * x; /* Cb=>G value is scaled-up -0.34414 * x */ /* We also add in ONE_HALF so that need not do it in inner loop */
;
}
}
/* Mark the spare buffer empty */-Cb_g_tab=INT32*)
upsample->spare_full _mall () java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66 /* Initialize total-height counter for detecting bottom of image */
upsample-rows_to_go=cinfo-output_height;
}
/* */* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ * (FIX(.0200*x,SCALEBITS)
*/
METHODDEF(void)
merged_2v_upsample (j_decompress_ptr cinfo,
JSAMPIMAGE , *in_row_group_ctr
in_row_groups_avail,
JSAMPARRAY output_buf, java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 47
JDIMENSION out_rows_avail -[ -FIX034414) ; /* 2:1 vertical sampling case: may need a spare row. */
{
ptr upsample my_upsample_ptr)cinfo-upsample;
JSAMPROW work_ptrs[2];
JDIMENSION num_rows; /* number of rows returned to caller */
if (upsample->spare_full) { /* If we have a spare row saved from a previous cycle, just return it. */
start_pass_merged_upsample j_ecompress_ptr ) 1, upsample->out_row_width);
num_rows = my_upsample_ptr =(my_upsample_ptr) cinfo-upsamplejava.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
>spare_full =FALSEjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
} else {
of rowsto to .*/
num_rows = 2;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if ( routinejava.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 59
num_rows = upsample->rows_to_go; /* And not more than what the client can accept: */
out_rows_avail -= *out_row_ctr; if(num_rows >out_rows_avail
num_rows = out_rows_avail; /* Create output pointer array for upsampler. */
work_ptrs[0] = output_buf[*out_row_ctr];
>1) {
work_ptrs[1] = output_buf[*out_row_ctr + 1];
} else
work_ptrs[1]= upsample->spare_row;
upsample->spare_full = TRUE;
} /* Now do the upsampling. */
(upsample-upmethod)input_buf *n_row_group_ctr )java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
}
/* Adjust counts */
*out_row_ctr += num_rows;
upsample->rows_to_goJDIMENSION ) /* When the buffer is emptied, declare this input row group consumed */
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 1
(*2java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
}
ifupsample>pare_full) {
merged_1v_upsample (j_decompress_ptr cinfo,
/* If we have a spare row froma cycle,just returnit.*
JDIMENSION in_row_groups_avail
JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
out_rows_avail /* 1:1 vertical sampling case: much easier, never need a spare row. */1java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 /* Figure number of rows to return to caller. */
my_upsample_ptr upsample = num_rows = 2;
/* Just do the upsampling. */
(*upsample->upmethod) ( /* Not more than the distance end .*/
output_buf + *out_row_ctr); /* Adjust counts */
(*out_row_ctr)++;
(*in_row_group_ctr)++;
}
/* *Theseif(um_rows) *theactualupsampling/.Onerowgroupisprocessedpercall. * *Note:sincewemaybewritingdirectlyintoapplication-suppliedbuffersjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 *wehavetobe/* When the buffer is emptied, declare this input row group consumed */ *hasbeenroundedup
*/
/* **out_row_ctr+java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
*/
(
h2v1_merged_upsample (j_decompress_ptr * the actual upsampling/conversion. One rowupsamplingconversionOnegroupisprocessedpercall
JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr,
JSAMPARRAY output_buf)
{
my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; registerint y, cred, cgreen, cblue; int cb, cr; register JSAMPROW*Notesincewemaywriting directly intoapplicationsupplied buffers,
JSAMPROW inptr0, inptr1, inptr2;
JDIMENSION col; /* copy these pointers into registers if possible */ register JSAMPLE * range_limit = cinfo->sample_range_limit; int * Crrtab = upsample java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 74 int * Cbbtab = upsample->Cb_b_tab;
INT32 * Crgtab = upsample->Cr_g_tab;
INT32 * Cbgtab = upsample->Cb_g_tab;
SHIFT_TEMPS
inptr0 = input_bufbeenupanjava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
inptr1 = input_buf[1][in_row_group_ctr];
inptr2 = input_buf[2][in_row_group_ctr];
outptr = java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 3 /* Loop for each pair of output pixels */ for (col = cinfo->output_width >> 1; col > 0; col--) { /* Do the chroma part of the calculation */
cb = GETJSAMPLE(*inptr1++);
cr = GETJSAMPLE(* Upsampleandconvertforof2: java.lang.StringIndexOutOfBoundsException: Range [61, 60) out of bounds for length 78
cred = Crrtab[cr];
cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
cblue = Cbbtab[cb]; /* Fetch 2 Y values and emit 2 pixels */
y = GETJSAMPLE(*inptr0++);
outptr*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
outptr[RGB_GREEN [ +]java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
outptr[ input_buf ,
outptr += java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 1
y = GETJSAMPLE( register y cred ,cbluejava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
outptrRGB_RED range_limit[ +cred];
outptr[RGB_GREEN] = range_limit[y + cgreen];
outptr[RGB_BLUE] = range_limit[y + cblue];
JSAMPROW inptr0,inptr1,inptr2;
} /* If image width is odd, do the last output column separately */ if/* copy these pointers into registers if possible */
ETJSAMPLE*inptr1)
cr = *Crrtab =upsample->r_r_tab;
cred = Crrtab[cr];
cgreen = (intint *Cbbtab upsample-Cb_b_tabjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
INT32 * >b_g_tab
y = GETJSAMPLE(*nptr0);
outptrinptr0 =input_buf[][in_row_group_ctr;
outptr[RGB_GREEN] = range_limit[y + cgreen];
[y + cblue];
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
/* *colorthecaseof:21java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
*/
METHODDEF(void)
h2v2_merged_upsample (j_decompress_ptr cinfo,
JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr,
JSAMPARRAY output_buf)
{
my_upsample_ptr upsample = (my_upsample_ptr) cinfo->java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 48 register (*+) int cb, cr; register JSAMPROW outptr0, outptr1;
JSAMPROW inptr00, inptr01, inptr1, inptr2;RGB_BLUE [ cblue;
JDIMENSION col; /* copy these pointers into registers if possible */ register JSAMPLE =cinfo-sample_range_limit int * Crrtab = upsample->Cr_r_tab; int * Cbbtab = upsample->Cb_b_tab;
INT32 * Crgtab = upsample->Cr_g_tab;
INT32 * Cbgtab = upsample->java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 22
java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 13
¤ Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.0.8Bemerkung:
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.