/ Usenet 1994 January / usenetsourcesnewsgroupsinfomagicjanuary1994.iso / sources / misc / volume34 / jpeg / part07

< prev

next >

view JSON data

view as text

open on a Mac

open on a PC

+--------+-------------------------+-------------------------+--------+--------+
|00000000| 4e 65 77 73 67 72 6f 75 | 70 73 3a 20 63 6f 6d 70 |Newsgrou|ps: comp|
|00000010| 2e 73 6f 75 72 63 65 73 | 2e 6d 69 73 63 0a 46 72 |.sources|.misc.Fr|
|00000020| 6f 6d 3a 20 6a 70 65 67 | 2d 69 6e 66 6f 40 75 75 |om: jpeg|-info@uu|
|00000030| 6e 65 74 2e 75 75 2e 6e | 65 74 20 28 49 6e 64 65 |net.uu.n|et (Inde|
|00000040| 70 65 6e 64 65 6e 74 20 | 4a 50 45 47 20 47 72 6f |pendent |JPEG Gro|
|00000050| 75 70 29 0a 53 75 62 6a | 65 63 74 3a 20 20 76 33 |up).Subj|ect:  v3|
|00000060| 34 69 30 36 31 3a 20 20 | 6a 70 65 67 20 2d 20 4a |4i061:  |jpeg - J|
|00000070| 50 45 47 20 69 6d 61 67 | 65 20 63 6f 6d 70 72 65 |PEG imag|e compre|
|00000080| 73 73 69 6f 6e 2c 20 50 | 61 72 74 30 37 2f 31 38 |ssion, P|art07/18|
|00000090| 0a 4d 65 73 73 61 67 65 | 2d 49 44 3a 20 3c 31 39 |.Message|-ID: <19|
|000000a0| 39 32 44 65 63 31 37 2e | 30 34 31 37 35 36 2e 32 |92Dec17.|041756.2|
|000000b0| 33 35 33 38 40 73 70 61 | 72 6b 79 2e 69 6d 64 2e |3538@spa|rky.imd.|
|000000c0| 73 74 65 72 6c 69 6e 67 | 2e 63 6f 6d 3e 0a 58 2d |sterling|.com>.X-|
|000000d0| 4d 64 34 2d 53 69 67 6e | 61 74 75 72 65 3a 20 35 |Md4-Sign|ature: 5|
|000000e0| 31 64 31 61 64 65 65 30 | 61 32 39 36 62 32 38 62 |1d1adee0|a296b28b|
|000000f0| 34 39 64 37 30 30 38 34 | 62 37 61 34 36 66 61 0a |49d70084|b7a46fa.|
|00000100| 44 61 74 65 3a 20 54 68 | 75 2c 20 31 37 20 44 65 |Date: Th|u, 17 De|
|00000110| 63 20 31 39 39 32 20 30 | 34 3a 31 37 3a 35 36 20 |c 1992 0|4:17:56 |
|00000120| 47 4d 54 0a 41 70 70 72 | 6f 76 65 64 3a 20 6b 65 |GMT.Appr|oved: ke|
|00000130| 6e 74 40 73 70 61 72 6b | 79 2e 69 6d 64 2e 73 74 |nt@spark|y.imd.st|
|00000140| 65 72 6c 69 6e 67 2e 63 | 6f 6d 0a 0a 53 75 62 6d |erling.c|om..Subm|
|00000150| 69 74 74 65 64 2d 62 79 | 3a 20 6a 70 65 67 2d 69 |itted-by|: jpeg-i|
|00000160| 6e 66 6f 40 75 75 6e 65 | 74 2e 75 75 2e 6e 65 74 |nfo@uune|t.uu.net|
|00000170| 20 28 49 6e 64 65 70 65 | 6e 64 65 6e 74 20 4a 50 | (Indepe|ndent JP|
|00000180| 45 47 20 47 72 6f 75 70 | 29 0a 50 6f 73 74 69 6e |EG Group|).Postin|
|00000190| 67 2d 6e 75 6d 62 65 72 | 3a 20 56 6f 6c 75 6d 65 |g-number|: Volume|
|000001a0| 20 33 34 2c 20 49 73 73 | 75 65 20 36 31 0a 41 72 | 34, Iss|ue 61.Ar|
|000001b0| 63 68 69 76 65 2d 6e 61 | 6d 65 3a 20 6a 70 65 67 |chive-na|me: jpeg|
|000001c0| 2f 70 61 72 74 30 37 0a | 45 6e 76 69 72 6f 6e 6d |/part07.|Environm|
|000001d0| 65 6e 74 3a 20 55 4e 49 | 58 2c 20 56 4d 53 2c 20 |ent: UNI|X, VMS, |
|000001e0| 4d 53 2d 44 4f 53 2c 20 | 4d 61 63 2c 20 41 6d 69 |MS-DOS, |Mac, Ami|
|000001f0| 67 61 2c 20 41 74 61 72 | 69 2c 20 43 72 61 79 0a |ga, Atar|i, Cray.|
|00000200| 53 75 70 65 72 73 65 64 | 65 73 3a 20 6a 70 65 67 |Supersed|es: jpeg|
|00000210| 3a 20 56 6f 6c 75 6d 65 | 20 32 39 2c 20 49 73 73 |: Volume| 29, Iss|
|00000220| 75 65 20 31 2d 31 38 0a | 0a 23 21 20 2f 62 69 6e |ue 1-18.|.#! /bin|
|00000230| 2f 73 68 0a 23 20 54 68 | 69 73 20 69 73 20 61 20 |/sh.# Th|is is a |
|00000240| 73 68 65 6c 6c 20 61 72 | 63 68 69 76 65 2e 20 20 |shell ar|chive.  |
|00000250| 52 65 6d 6f 76 65 20 61 | 6e 79 74 68 69 6e 67 20 |Remove a|nything |
|00000260| 62 65 66 6f 72 65 20 74 | 68 69 73 20 6c 69 6e 65 |before t|his line|
|00000270| 2c 20 74 68 65 6e 20 66 | 65 65 64 20 69 74 0a 23 |, then f|eed it.#|
|00000280| 20 69 6e 74 6f 20 61 20 | 73 68 65 6c 6c 20 76 69 | into a |shell vi|
|00000290| 61 20 22 73 68 20 66 69 | 6c 65 22 20 6f 72 20 73 |a "sh fi|le" or s|
|000002a0| 69 6d 69 6c 61 72 2e 20 | 20 54 6f 20 6f 76 65 72 |imilar. | To over|
|000002b0| 77 72 69 74 65 20 65 78 | 69 73 74 69 6e 67 20 66 |write ex|isting f|
|000002c0| 69 6c 65 73 2c 0a 23 20 | 74 79 70 65 20 22 73 68 |iles,.# |type "sh|
|000002d0| 20 66 69 6c 65 20 2d 63 | 22 2e 0a 23 20 43 6f 6e | file -c|"..# Con|
|000002e0| 74 65 6e 74 73 3a 20 20 | 6a 71 75 61 6e 74 31 2e |tents:  |jquant1.|
|000002f0| 63 20 74 69 6d 67 2e 70 | 70 6d 2e 55 55 2e 42 0a |c timg.p|pm.UU.B.|
|00000300| 23 20 57 72 61 70 70 65 | 64 20 62 79 20 6b 65 6e |# Wrappe|d by ken|
|00000310| 74 40 73 70 61 72 6b 79 | 20 6f 6e 20 57 65 64 20 |t@sparky| on Wed |
|00000320| 44 65 63 20 31 36 20 32 | 30 3a 35 32 3a 32 37 20 |Dec 16 2|0:52:27 |
|00000330| 31 39 39 32 0a 50 41 54 | 48 3d 2f 62 69 6e 3a 2f |1992.PAT|H=/bin:/|
|00000340| 75 73 72 2f 62 69 6e 3a | 2f 75 73 72 2f 75 63 62 |usr/bin:|/usr/ucb|
|00000350| 3a 2f 75 73 72 2f 6c 6f | 63 61 6c 2f 62 69 6e 3a |:/usr/lo|cal/bin:|
|00000360| 2f 75 73 72 2f 6c 62 69 | 6e 20 3b 20 65 78 70 6f |/usr/lbi|n ; expo|
|00000370| 72 74 20 50 41 54 48 0a | 65 63 68 6f 20 49 66 20 |rt PATH.|echo If |
|00000380| 74 68 69 73 20 61 72 63 | 68 69 76 65 20 69 73 20 |this arc|hive is |
|00000390| 63 6f 6d 70 6c 65 74 65 | 2c 20 79 6f 75 20 77 69 |complete|, you wi|
|000003a0| 6c 6c 20 73 65 65 20 74 | 68 65 20 66 6f 6c 6c 6f |ll see t|he follo|
|000003b0| 77 69 6e 67 20 6d 65 73 | 73 61 67 65 3a 0a 65 63 |wing mes|sage:.ec|
|000003c0| 68 6f 20 27 20 20 20 20 | 20 20 20 20 20 20 22 73 |ho '    |      "s|
|000003d0| 68 61 72 3a 20 45 6e 64 | 20 6f 66 20 61 72 63 68 |har: End| of arch|
|000003e0| 69 76 65 20 37 20 28 6f | 66 20 31 38 29 2e 22 27 |ive 7 (o|f 18)."'|
|000003f0| 0a 69 66 20 74 65 73 74 | 20 2d 66 20 27 6a 71 75 |.if test| -f 'jqu|
|00000400| 61 6e 74 31 2e 63 27 20 | 2d 61 20 22 24 7b 31 7d |ant1.c' |-a "${1}|
|00000410| 22 20 21 3d 20 22 2d 63 | 22 20 3b 20 74 68 65 6e |" != "-c|" ; then|
|00000420| 20 0a 20 20 65 63 68 6f | 20 73 68 61 72 3a 20 57 | .  echo| shar: W|
|00000430| 69 6c 6c 20 6e 6f 74 20 | 63 6c 6f 62 62 65 72 20 |ill not |clobber |
|00000440| 65 78 69 73 74 69 6e 67 | 20 66 69 6c 65 20 5c 22 |existing| file \"|
|00000450| 27 6a 71 75 61 6e 74 31 | 2e 63 27 5c 22 0a 65 6c |'jquant1|.c'\".el|
|00000460| 73 65 0a 20 20 65 63 68 | 6f 20 73 68 61 72 3a 20 |se.  ech|o shar: |
|00000470| 45 78 74 72 61 63 74 69 | 6e 67 20 5c 22 27 6a 71 |Extracti|ng \"'jq|
|00000480| 75 61 6e 74 31 2e 63 27 | 5c 22 20 5c 28 32 32 30 |uant1.c'|\" \(220|
|00000490| 32 31 20 63 68 61 72 61 | 63 74 65 72 73 5c 29 0a |21 chara|cters\).|
|000004a0| 20 20 73 65 64 20 22 73 | 2f 5e 58 2f 2f 22 20 3e |  sed "s|/^X//" >|
|000004b0| 27 6a 71 75 61 6e 74 31 | 2e 63 27 20 3c 3c 27 45 |'jquant1|.c' <<'E|
|000004c0| 4e 44 5f 4f 46 5f 46 49 | 4c 45 27 0a 58 2f 2a 0a |ND_OF_FI|LE'.X/*.|
|000004d0| 58 20 2a 20 6a 71 75 61 | 6e 74 31 2e 63 0a 58 20 |X * jqua|nt1.c.X |
|000004e0| 2a 0a 58 20 2a 20 43 6f | 70 79 72 69 67 68 74 20 |*.X * Co|pyright |
|000004f0| 28 43 29 20 31 39 39 31 | 2c 20 31 39 39 32 2c 20 |(C) 1991|, 1992, |
|00000500| 54 68 6f 6d 61 73 20 47 | 2e 20 4c 61 6e 65 2e 0a |Thomas G|. Lane..|
|00000510| 58 20 2a 20 54 68 69 73 | 20 66 69 6c 65 20 69 73 |X * This| file is|
|00000520| 20 70 61 72 74 20 6f 66 | 20 74 68 65 20 49 6e 64 | part of| the Ind|
|00000530| 65 70 65 6e 64 65 6e 74 | 20 4a 50 45 47 20 47 72 |ependent| JPEG Gr|
|00000540| 6f 75 70 27 73 20 73 6f | 66 74 77 61 72 65 2e 0a |oup's so|ftware..|
|00000550| 58 20 2a 20 46 6f 72 20 | 63 6f 6e 64 69 74 69 6f |X * For |conditio|
|00000560| 6e 73 20 6f 66 20 64 69 | 73 74 72 69 62 75 74 69 |ns of di|stributi|
|00000570| 6f 6e 20 61 6e 64 20 75 | 73 65 2c 20 73 65 65 20 |on and u|se, see |
|00000580| 74 68 65 20 61 63 63 6f | 6d 70 61 6e 79 69 6e 67 |the acco|mpanying|
|00000590| 20 52 45 41 44 4d 45 20 | 66 69 6c 65 2e 0a 58 20 | README |file..X |
|000005a0| 2a 0a 58 20 2a 20 54 68 | 69 73 20 66 69 6c 65 20 |*.X * Th|is file |
|000005b0| 63 6f 6e 74 61 69 6e 73 | 20 31 2d 70 61 73 73 20 |contains| 1-pass |
|000005c0| 63 6f 6c 6f 72 20 71 75 | 61 6e 74 69 7a 61 74 69 |color qu|antizati|
|000005d0| 6f 6e 20 28 63 6f 6c 6f | 72 20 6d 61 70 70 69 6e |on (colo|r mappin|
|000005e0| 67 29 20 72 6f 75 74 69 | 6e 65 73 2e 0a 58 20 2a |g) routi|nes..X *|
|000005f0| 20 54 68 65 73 65 20 72 | 6f 75 74 69 6e 65 73 20 | These r|outines |
|00000600| 61 72 65 20 69 6e 76 6f | 6b 65 64 20 76 69 61 20 |are invo|ked via |
|00000610| 74 68 65 20 6d 65 74 68 | 6f 64 73 20 63 6f 6c 6f |the meth|ods colo|
|00000620| 72 5f 71 75 61 6e 74 69 | 7a 65 0a 58 20 2a 20 61 |r_quanti|ze.X * a|
|00000630| 6e 64 20 63 6f 6c 6f 72 | 5f 71 75 61 6e 74 5f 69 |nd color|_quant_i|
|00000640| 6e 69 74 2f 74 65 72 6d | 2e 0a 58 20 2a 2f 0a 58 |nit/term|..X */.X|
|00000650| 0a 58 23 69 6e 63 6c 75 | 64 65 20 22 6a 69 6e 63 |.X#inclu|de "jinc|
|00000660| 6c 75 64 65 2e 68 22 0a | 58 0a 58 23 69 66 64 65 |lude.h".|X.X#ifde|
|00000670| 66 20 51 55 41 4e 54 5f | 31 50 41 53 53 5f 53 55 |f QUANT_|1PASS_SU|
|00000680| 50 50 4f 52 54 45 44 0a | 58 0a 58 0a 58 2f 2a 0a |PPORTED.|X.X.X/*.|
|00000690| 58 20 2a 20 54 68 65 20 | 6d 61 69 6e 20 70 75 72 |X * The |main pur|
|000006a0| 70 6f 73 65 20 6f 66 20 | 31 2d 70 61 73 73 20 71 |pose of |1-pass q|
|000006b0| 75 61 6e 74 69 7a 61 74 | 69 6f 6e 20 69 73 20 74 |uantizat|ion is t|
|000006c0| 6f 20 70 72 6f 76 69 64 | 65 20 61 20 66 61 73 74 |o provid|e a fast|
|000006d0| 2c 20 69 66 20 6e 6f 74 | 20 76 65 72 79 0a 58 20 |, if not| very.X |
|000006e0| 2a 20 68 69 67 68 20 71 | 75 61 6c 69 74 79 2c 20 |* high q|uality, |
|000006f0| 63 6f 6c 6f 72 6d 61 70 | 70 65 64 20 6f 75 74 70 |colormap|ped outp|
|00000700| 75 74 20 63 61 70 61 62 | 69 6c 69 74 79 2e 20 20 |ut capab|ility.  |
|00000710| 41 20 32 2d 70 61 73 73 | 20 71 75 61 6e 74 69 7a |A 2-pass| quantiz|
|00000720| 65 72 20 75 73 75 61 6c | 6c 79 0a 58 20 2a 20 67 |er usual|ly.X * g|
|00000730| 69 76 65 73 20 62 65 74 | 74 65 72 20 76 69 73 75 |ives bet|ter visu|
|00000740| 61 6c 20 71 75 61 6c 69 | 74 79 3b 20 68 6f 77 65 |al quali|ty; howe|
|00000750| 76 65 72 2c 20 66 6f 72 | 20 71 75 61 6e 74 69 7a |ver, for| quantiz|
|00000760| 65 64 20 67 72 61 79 73 | 63 61 6c 65 20 6f 75 74 |ed grays|cale out|
|00000770| 70 75 74 20 74 68 69 73 | 0a 58 20 2a 20 71 75 61 |put this|.X * qua|
|00000780| 6e 74 69 7a 65 72 20 69 | 73 20 70 65 72 66 65 63 |ntizer i|s perfec|
|00000790| 74 6c 79 20 61 64 65 71 | 75 61 74 65 2e 20 20 44 |tly adeq|uate.  D|
|000007a0| 69 74 68 65 72 69 6e 67 | 20 69 73 20 68 69 67 68 |ithering| is high|
|000007b0| 6c 79 20 72 65 63 6f 6d | 6d 65 6e 64 65 64 20 77 |ly recom|mended w|
|000007c0| 69 74 68 20 74 68 69 73 | 0a 58 20 2a 20 71 75 61 |ith this|.X * qua|
|000007d0| 6e 74 69 7a 65 72 2c 20 | 74 68 6f 75 67 68 20 79 |ntizer, |though y|
|000007e0| 6f 75 20 63 61 6e 20 74 | 75 72 6e 20 69 74 20 6f |ou can t|urn it o|
|000007f0| 66 66 20 69 66 20 79 6f | 75 20 72 65 61 6c 6c 79 |ff if yo|u really|
|00000800| 20 77 61 6e 74 20 74 6f | 2e 0a 58 20 2a 0a 58 20 | want to|..X *.X |
|00000810| 2a 20 54 68 69 73 20 69 | 6d 70 6c 65 6d 65 6e 74 |* This i|mplement|
|00000820| 61 74 69 6f 6e 20 71 75 | 61 6e 74 69 7a 65 73 20 |ation qu|antizes |
|00000830| 69 6e 20 74 68 65 20 6f | 75 74 70 75 74 20 63 6f |in the o|utput co|
|00000840| 6c 6f 72 73 70 61 63 65 | 2e 20 20 54 68 69 73 20 |lorspace|.  This |
|00000850| 68 61 73 20 61 20 63 6f | 75 70 6c 65 0a 58 20 2a |has a co|uple.X *|
|00000860| 20 6f 66 20 64 69 73 61 | 64 76 61 6e 74 61 67 65 | of disa|dvantage|
|00000870| 73 3a 20 65 61 63 68 20 | 70 69 78 65 6c 20 6d 75 |s: each |pixel mu|
|00000880| 73 74 20 62 65 20 69 6e | 64 69 76 69 64 75 61 6c |st be in|dividual|
|00000890| 6c 79 20 63 6f 6c 6f 72 | 2d 63 6f 6e 76 65 72 74 |ly color|-convert|
|000008a0| 65 64 2c 20 61 6e 64 20 | 69 66 0a 58 20 2a 20 74 |ed, and |if.X * t|
|000008b0| 68 65 20 63 6f 6c 6f 72 | 20 63 6f 6e 76 65 72 73 |he color| convers|
|000008c0| 69 6f 6e 20 69 6e 63 6c | 75 64 65 73 20 67 61 6d |ion incl|udes gam|
|000008d0| 6d 61 20 63 6f 72 72 65 | 63 74 69 6f 6e 20 74 68 |ma corre|ction th|
|000008e0| 65 6e 20 71 75 61 6e 74 | 69 7a 61 74 69 6f 6e 20 |en quant|ization |
|000008f0| 69 73 20 64 6f 6e 65 20 | 69 6e 0a 58 20 2a 20 61 |is done |in.X * a|
|00000900| 20 6e 6f 6e 6c 69 6e 65 | 61 72 20 73 70 61 63 65 | nonline|ar space|
|00000910| 2c 20 77 68 69 63 68 20 | 69 73 20 6c 65 73 73 20 |, which |is less |
|00000920| 64 65 73 69 72 61 62 6c | 65 2e 20 20 54 68 65 20 |desirabl|e.  The |
|00000930| 6d 61 6a 6f 72 20 61 64 | 76 61 6e 74 61 67 65 20 |major ad|vantage |
|00000940| 69 73 20 74 68 61 74 0a | 58 20 2a 20 77 69 74 68 |is that.|X * with|
|00000950| 20 74 68 65 20 75 73 75 | 61 6c 20 6f 75 74 70 75 | the usu|al outpu|
|00000960| 74 20 63 6f 6c 6f 72 20 | 73 70 61 63 65 73 20 28 |t color |spaces (|
|00000970| 52 47 42 2c 20 67 72 61 | 79 73 63 61 6c 65 29 20 |RGB, gra|yscale) |
|00000980| 61 6e 20 6f 72 74 68 6f | 67 6f 6e 61 6c 20 67 72 |an ortho|gonal gr|
|00000990| 69 64 20 6f 66 0a 58 20 | 2a 20 72 65 70 72 65 73 |id of.X |* repres|
|000009a0| 65 6e 74 61 74 69 76 65 | 20 63 6f 6c 6f 72 73 20 |entative| colors |
|000009b0| 63 61 6e 20 62 65 20 75 | 73 65 64 2c 20 74 68 75 |can be u|sed, thu|
|000009c0| 73 20 70 65 72 6d 69 74 | 74 69 6e 67 20 74 68 65 |s permit|ting the|
|000009d0| 20 76 65 72 79 20 73 69 | 6d 70 6c 65 20 61 6e 64 | very si|mple and|
|000009e0| 20 66 61 73 74 0a 58 20 | 2a 20 63 6f 6c 6f 72 20 | fast.X |* color |
|000009f0| 6c 6f 6f 6b 75 70 20 73 | 63 68 65 6d 65 20 75 73 |lookup s|cheme us|
|00000a00| 65 64 20 68 65 72 65 2e | 20 20 54 68 65 20 73 74 |ed here.|  The st|
|00000a10| 61 6e 64 61 72 64 20 4a | 50 45 47 20 63 6f 6c 6f |andard J|PEG colo|
|00000a20| 72 73 70 61 63 65 20 28 | 59 43 62 43 72 29 20 63 |rspace (|YCbCr) c|
|00000a30| 61 6e 6e 6f 74 0a 58 20 | 2a 20 62 65 20 65 66 66 |annot.X |* be eff|
|00000a40| 65 63 74 69 76 65 6c 79 | 20 68 61 6e 64 6c 65 64 |ectively| handled|
|00000a50| 20 74 68 69 73 20 77 61 | 79 2c 20 62 65 63 61 75 | this wa|y, becau|
|00000a60| 73 65 20 6f 6e 6c 79 20 | 61 62 6f 75 74 20 61 20 |se only |about a |
|00000a70| 71 75 61 72 74 65 72 20 | 6f 66 20 61 6e 0a 58 20 |quarter |of an.X |
|00000a80| 2a 20 6f 72 74 68 6f 67 | 6f 6e 61 6c 20 67 72 69 |* orthog|onal gri|
|00000a90| 64 20 77 6f 75 6c 64 20 | 66 61 6c 6c 20 77 69 74 |d would |fall wit|
|00000aa0| 68 69 6e 20 74 68 65 20 | 67 61 6d 75 74 20 6f 66 |hin the |gamut of|
|00000ab0| 20 72 65 61 6c 69 7a 61 | 62 6c 65 20 63 6f 6c 6f | realiza|ble colo|
|00000ac0| 72 73 2e 20 20 41 6e 6f | 74 68 65 72 0a 58 20 2a |rs.  Ano|ther.X *|
|00000ad0| 20 61 64 76 61 6e 74 61 | 67 65 20 69 73 20 74 68 | advanta|ge is th|
|00000ae0| 61 74 20 77 68 65 6e 20 | 74 68 65 20 75 73 65 72 |at when |the user|
|00000af0| 20 77 61 6e 74 73 20 71 | 75 61 6e 74 69 7a 65 64 | wants q|uantized|
|00000b00| 20 67 72 61 79 73 63 61 | 6c 65 20 6f 75 74 70 75 | graysca|le outpu|
|00000b10| 74 20 66 72 6f 6d 20 61 | 0a 58 20 2a 20 63 6f 6c |t from a|.X * col|
|00000b20| 6f 72 20 4a 50 45 47 20 | 66 69 6c 65 2c 20 74 68 |or JPEG |file, th|
|00000b30| 69 73 20 71 75 61 6e 74 | 69 7a 65 72 20 63 61 6e |is quant|izer can|
|00000b40| 20 70 72 6f 76 69 64 65 | 20 61 20 68 69 67 68 2d | provide| a high-|
|00000b50| 71 75 61 6c 69 74 79 20 | 72 65 73 75 6c 74 20 77 |quality |result w|
|00000b60| 69 74 68 20 6e 6f 0a 58 | 20 2a 20 73 70 65 63 69 |ith no.X| * speci|
|00000b70| 61 6c 20 68 61 63 6b 69 | 6e 67 2e 0a 58 20 2a 0a |al hacki|ng..X *.|
|00000b80| 58 20 2a 20 54 68 65 20 | 67 61 6d 6d 61 2d 63 6f |X * The |gamma-co|
|00000b90| 72 72 65 63 74 69 6f 6e | 20 70 72 6f 62 6c 65 6d |rrection| problem|
|00000ba0| 20 63 6f 75 6c 64 20 62 | 65 20 65 6c 69 6d 69 6e | could b|e elimin|
|00000bb0| 61 74 65 64 20 62 79 20 | 61 64 6a 75 73 74 69 6e |ated by |adjustin|
|00000bc0| 67 20 74 68 65 20 67 72 | 69 64 0a 58 20 2a 20 73 |g the gr|id.X * s|
|00000bd0| 70 61 63 69 6e 67 20 74 | 6f 20 63 6f 75 6e 74 65 |pacing t|o counte|
|00000be0| 72 61 63 74 20 74 68 65 | 20 67 61 6d 6d 61 20 63 |ract the| gamma c|
|00000bf0| 6f 72 72 65 63 74 69 6f | 6e 20 61 70 70 6c 69 65 |orrectio|n applie|
|00000c00| 64 20 62 79 20 63 6f 6c | 6f 72 5f 63 6f 6e 76 65 |d by col|or_conve|
|00000c10| 72 74 2e 0a 58 20 2a 20 | 41 74 20 74 68 69 73 20 |rt..X * |At this |
|00000c20| 77 72 69 74 69 6e 67 2c | 20 67 61 6d 6d 61 20 63 |writing,| gamma c|
|00000c30| 6f 72 72 65 63 74 69 6f | 6e 20 69 73 20 6e 6f 74 |orrectio|n is not|
|00000c40| 20 69 6d 70 6c 65 6d 65 | 6e 74 65 64 20 62 79 20 | impleme|nted by |
|00000c50| 6a 64 63 6f 6c 6f 72 2c | 20 73 6f 0a 58 20 2a 20 |jdcolor,| so.X * |
|00000c60| 6e 6f 74 68 69 6e 67 20 | 69 73 20 64 6f 6e 65 20 |nothing |is done |
|00000c70| 68 65 72 65 2e 0a 58 20 | 2a 0a 58 20 2a 20 49 6e |here..X |*.X * In|
|00000c80| 20 31 2d 70 61 73 73 20 | 71 75 61 6e 74 69 7a 61 | 1-pass |quantiza|
|00000c90| 74 69 6f 6e 20 74 68 65 | 20 63 6f 6c 6f 72 6d 61 |tion the| colorma|
|00000ca0| 70 20 6d 75 73 74 20 62 | 65 20 63 68 6f 73 65 6e |p must b|e chosen|
|00000cb0| 20 69 6e 20 61 64 76 61 | 6e 63 65 20 6f 66 20 73 | in adva|nce of s|
|00000cc0| 65 65 69 6e 67 20 74 68 | 65 0a 58 20 2a 20 69 6d |eeing th|e.X * im|
|00000cd0| 61 67 65 2e 20 20 57 65 | 20 75 73 65 20 61 20 6d |age.  We| use a m|
|00000ce0| 61 70 20 63 6f 6e 73 69 | 73 74 69 6e 67 20 6f 66 |ap consi|sting of|
|00000cf0| 20 61 6c 6c 20 63 6f 6d | 62 69 6e 61 74 69 6f 6e | all com|bination|
|00000d00| 73 20 6f 66 20 4e 63 6f | 6c 6f 72 73 5b 69 5d 20 |s of Nco|lors[i] |
|00000d10| 63 6f 6c 6f 72 0a 58 20 | 2a 20 76 61 6c 75 65 73 |color.X |* values|
|00000d20| 20 66 6f 72 20 74 68 65 | 20 69 27 74 68 20 63 6f | for the| i'th co|
|00000d30| 6d 70 6f 6e 65 6e 74 2e | 20 20 54 68 65 20 4e 63 |mponent.|  The Nc|
|00000d40| 6f 6c 6f 72 73 5b 5d 20 | 76 61 6c 75 65 73 20 61 |olors[] |values a|
|00000d50| 72 65 20 63 68 6f 73 65 | 6e 20 73 6f 20 74 68 61 |re chose|n so tha|
|00000d60| 74 0a 58 20 2a 20 74 68 | 65 69 72 20 70 72 6f 64 |t.X * th|eir prod|
|00000d70| 75 63 74 2c 20 74 68 65 | 20 74 6f 74 61 6c 20 6e |uct, the| total n|
|00000d80| 75 6d 62 65 72 20 6f 66 | 20 63 6f 6c 6f 72 73 2c |umber of| colors,|
|00000d90| 20 69 73 20 6e 6f 20 6d | 6f 72 65 20 74 68 61 6e | is no m|ore than|
|00000da0| 20 74 68 61 74 20 72 65 | 71 75 65 73 74 65 64 2e | that re|quested.|
|00000db0| 0a 58 20 2a 20 28 49 6e | 20 6d 6f 73 74 20 63 61 |.X * (In| most ca|
|00000dc0| 73 65 73 2c 20 74 68 65 | 20 70 72 6f 64 75 63 74 |ses, the| product|
|00000dd0| 20 77 69 6c 6c 20 62 65 | 20 73 6f 6d 65 77 68 61 | will be| somewha|
|00000de0| 74 20 6c 65 73 73 2e 29 | 0a 58 20 2a 0a 58 20 2a |t less.)|.X *.X *|
|00000df0| 20 53 69 6e 63 65 20 74 | 68 65 20 63 6f 6c 6f 72 | Since t|he color|
|00000e00| 6d 61 70 20 69 73 20 6f | 72 74 68 6f 67 6f 6e 61 |map is o|rthogona|
|00000e10| 6c 2c 20 74 68 65 20 72 | 65 70 72 65 73 65 6e 74 |l, the r|epresent|
|00000e20| 61 74 69 76 65 20 76 61 | 6c 75 65 20 66 6f 72 20 |ative va|lue for |
|00000e30| 65 61 63 68 20 63 6f 6c | 6f 72 0a 58 20 2a 20 63 |each col|or.X * c|
|00000e40| 6f 6d 70 6f 6e 65 6e 74 | 20 63 61 6e 20 62 65 20 |omponent| can be |
|00000e50| 64 65 74 65 72 6d 69 6e | 65 64 20 77 69 74 68 6f |determin|ed witho|
|00000e60| 75 74 20 63 6f 6e 73 69 | 64 65 72 69 6e 67 20 74 |ut consi|dering t|
|00000e70| 68 65 20 6f 74 68 65 72 | 20 63 6f 6d 70 6f 6e 65 |he other| compone|
|00000e80| 6e 74 73 3b 0a 58 20 2a | 20 74 68 65 6e 20 74 68 |nts;.X *| then th|
|00000e90| 65 73 65 20 69 6e 64 65 | 78 65 73 20 63 61 6e 20 |ese inde|xes can |
|00000ea0| 62 65 20 63 6f 6d 62 69 | 6e 65 64 20 69 6e 74 6f |be combi|ned into|
|00000eb0| 20 61 20 63 6f 6c 6f 72 | 6d 61 70 20 69 6e 64 65 | a color|map inde|
|00000ec0| 78 20 62 79 20 61 20 73 | 74 61 6e 64 61 72 64 0a |x by a s|tandard.|
|00000ed0| 58 20 2a 20 4e 2d 64 69 | 6d 65 6e 73 69 6f 6e 61 |X * N-di|mensiona|
|00000ee0| 6c 2d 61 72 72 61 79 2d | 73 75 62 73 63 72 69 70 |l-array-|subscrip|
|00000ef0| 74 20 63 61 6c 63 75 6c | 61 74 69 6f 6e 2e 20 20 |t calcul|ation.  |
|00000f00| 4d 6f 73 74 20 6f 66 20 | 74 68 65 20 61 72 69 74 |Most of |the arit|
|00000f10| 68 6d 65 74 69 63 20 69 | 6e 76 6f 6c 76 65 64 0a |hmetic i|nvolved.|
|00000f20| 58 20 2a 20 63 61 6e 20 | 62 65 20 70 72 65 63 61 |X * can |be preca|
|00000f30| 6c 63 75 6c 61 74 65 64 | 20 61 6e 64 20 73 74 6f |lculated| and sto|
|00000f40| 72 65 64 20 69 6e 20 74 | 68 65 20 6c 6f 6f 6b 75 |red in t|he looku|
|00000f50| 70 20 74 61 62 6c 65 20 | 63 6f 6c 6f 72 69 6e 64 |p table |colorind|
|00000f60| 65 78 5b 5d 2e 0a 58 20 | 2a 20 63 6f 6c 6f 72 69 |ex[]..X |* colori|
|00000f70| 6e 64 65 78 5b 69 5d 5b | 6a 5d 20 6d 61 70 73 20 |ndex[i][|j] maps |
|00000f80| 70 69 78 65 6c 20 76 61 | 6c 75 65 20 6a 20 69 6e |pixel va|lue j in|
|00000f90| 20 63 6f 6d 70 6f 6e 65 | 6e 74 20 69 20 74 6f 20 | compone|nt i to |
|00000fa0| 74 68 65 20 6e 65 61 72 | 65 73 74 0a 58 20 2a 20 |the near|est.X * |
|00000fb0| 72 65 70 72 65 73 65 6e | 74 61 74 69 76 65 20 76 |represen|tative v|
|00000fc0| 61 6c 75 65 20 28 67 72 | 69 64 20 70 6c 61 6e 65 |alue (gr|id plane|
|00000fd0| 29 20 66 6f 72 20 74 68 | 61 74 20 63 6f 6d 70 6f |) for th|at compo|
|00000fe0| 6e 65 6e 74 3b 20 74 68 | 69 73 20 69 6e 64 65 78 |nent; th|is index|
|00000ff0| 20 69 73 0a 58 20 2a 20 | 6d 75 6c 74 69 70 6c 69 | is.X * |multipli|
|00001000| 65 64 20 62 79 20 74 68 | 65 20 61 72 72 61 79 20 |ed by th|e array |
|00001010| 73 74 72 69 64 65 20 66 | 6f 72 20 63 6f 6d 70 6f |stride f|or compo|
|00001020| 6e 65 6e 74 20 69 2c 20 | 73 6f 20 74 68 61 74 20 |nent i, |so that |
|00001030| 74 68 65 0a 58 20 2a 20 | 69 6e 64 65 78 20 6f 66 |the.X * |index of|
|00001040| 20 74 68 65 20 63 6f 6c | 6f 72 6d 61 70 20 65 6e | the col|ormap en|
|00001050| 74 72 79 20 63 6c 6f 73 | 65 73 74 20 74 6f 20 61 |try clos|est to a|
|00001060| 20 67 69 76 65 6e 20 70 | 69 78 65 6c 20 76 61 6c | given p|ixel val|
|00001070| 75 65 20 69 73 20 6a 75 | 73 74 0a 58 20 2a 20 20 |ue is ju|st.X *  |
|00001080| 20 20 73 75 6d 28 20 63 | 6f 6c 6f 72 69 6e 64 65 |  sum( c|olorinde|
|00001090| 78 5b 63 6f 6d 70 6f 6e | 65 6e 74 2d 6e 75 6d 62 |x[compon|ent-numb|
|000010a0| 65 72 5d 5b 70 69 78 65 | 6c 2d 63 6f 6d 70 6f 6e |er][pixe|l-compon|
|000010b0| 65 6e 74 2d 76 61 6c 75 | 65 5d 20 29 0a 58 20 2a |ent-valu|e] ).X *|
|000010c0| 20 41 73 69 64 65 20 66 | 72 6f 6d 20 62 65 69 6e | Aside f|rom bein|
|000010d0| 67 20 66 61 73 74 2c 20 | 74 68 69 73 20 73 63 68 |g fast, |this sch|
|000010e0| 65 6d 65 20 61 6c 6c 6f | 77 73 20 66 6f 72 20 76 |eme allo|ws for v|
|000010f0| 61 72 69 61 62 6c 65 20 | 73 70 61 63 69 6e 67 20 |ariable |spacing |
|00001100| 62 65 74 77 65 65 6e 0a | 58 20 2a 20 72 65 70 72 |between.|X * repr|
|00001110| 65 73 65 6e 74 61 74 69 | 76 65 20 76 61 6c 75 65 |esentati|ve value|
|00001120| 73 20 77 69 74 68 20 6e | 6f 20 61 64 64 69 74 69 |s with n|o additi|
|00001130| 6f 6e 61 6c 20 6c 6f 6f | 6b 75 70 20 63 6f 73 74 |onal loo|kup cost|
|00001140| 2e 0a 58 20 2a 2f 0a 58 | 0a 58 0a 58 23 64 65 66 |..X */.X|.X.X#def|
|00001150| 69 6e 65 20 4d 41 58 5f | 43 4f 4d 50 4f 4e 45 4e |ine MAX_|COMPONEN|
|00001160| 54 53 20 34 09 2f 2a 20 | 6d 61 78 20 63 6f 6d 70 |TS 4./* |max comp|
|00001170| 6f 6e 65 6e 74 73 20 49 | 20 63 61 6e 20 68 61 6e |onents I| can han|
|00001180| 64 6c 65 20 2a 2f 0a 58 | 0a 58 73 74 61 74 69 63 |dle */.X|.Xstatic|
|00001190| 20 4a 53 41 4d 50 41 52 | 52 41 59 20 63 6f 6c 6f | JSAMPAR|RAY colo|
|000011a0| 72 6d 61 70 3b 09 2f 2a | 20 54 68 65 20 61 63 74 |rmap;./*| The act|
|000011b0| 75 61 6c 20 63 6f 6c 6f | 72 20 6d 61 70 20 2a 2f |ual colo|r map */|
|000011c0| 0a 58 2f 2a 20 63 6f 6c | 6f 72 6d 61 70 5b 69 5d |.X/* col|ormap[i]|
|000011d0| 5b 6a 5d 20 3d 20 76 61 | 6c 75 65 20 6f 66 20 69 |[j] = va|lue of i|
|000011e0| 27 74 68 20 63 6f 6c 6f | 72 20 63 6f 6d 70 6f 6e |'th colo|r compon|
|000011f0| 65 6e 74 20 66 6f 72 20 | 6f 75 74 70 75 74 20 70 |ent for |output p|
|00001200| 69 78 65 6c 20 76 61 6c | 75 65 20 6a 20 2a 2f 0a |ixel val|ue j */.|
|00001210| 58 0a 58 73 74 61 74 69 | 63 20 4a 53 41 4d 50 41 |X.Xstati|c JSAMPA|
|00001220| 52 52 41 59 20 63 6f 6c | 6f 72 69 6e 64 65 78 3b |RRAY col|orindex;|
|00001230| 09 2f 2a 20 50 72 65 63 | 6f 6d 70 75 74 65 64 20 |./* Prec|omputed |
|00001240| 6d 61 70 70 69 6e 67 20 | 66 6f 72 20 73 70 65 65 |mapping |for spee|
|00001250| 64 20 2a 2f 0a 58 2f 2a | 20 63 6f 6c 6f 72 69 6e |d */.X/*| colorin|
|00001260| 64 65 78 5b 69 5d 5b 6a | 5d 20 3d 20 69 6e 64 65 |dex[i][j|] = inde|
|00001270| 78 20 6f 66 20 63 6f 6c | 6f 72 20 63 6c 6f 73 65 |x of col|or close|
|00001280| 73 74 20 74 6f 20 70 69 | 78 65 6c 20 76 61 6c 75 |st to pi|xel valu|
|00001290| 65 20 6a 20 69 6e 20 63 | 6f 6d 70 6f 6e 65 6e 74 |e j in c|omponent|
|000012a0| 20 69 2c 0a 58 20 2a 20 | 70 72 65 6d 75 6c 74 69 | i,.X * |premulti|
|000012b0| 70 6c 69 65 64 20 61 73 | 20 64 65 73 63 72 69 62 |plied as| describ|
|000012c0| 65 64 20 61 62 6f 76 65 | 2e 20 20 53 69 6e 63 65 |ed above|.  Since|
|000012d0| 20 63 6f 6c 6f 72 6d 61 | 70 20 69 6e 64 65 78 65 | colorma|p indexe|
|000012e0| 73 20 6d 75 73 74 20 66 | 69 74 20 69 6e 74 6f 0a |s must f|it into.|
|000012f0| 58 20 2a 20 4a 53 41 4d | 50 4c 45 73 2c 20 74 68 |X * JSAM|PLEs, th|
|00001300| 65 20 65 6e 74 72 69 65 | 73 20 6f 66 20 74 68 69 |e entrie|s of thi|
|00001310| 73 20 61 72 72 61 79 20 | 77 69 6c 6c 20 74 6f 6f |s array |will too|
|00001320| 2e 0a 58 20 2a 2f 0a 58 | 0a 58 73 74 61 74 69 63 |..X */.X|.Xstatic|
|00001330| 20 4a 53 41 4d 50 41 52 | 52 41 59 20 69 6e 70 75 | JSAMPAR|RAY inpu|
|00001340| 74 5f 62 75 66 66 65 72 | 3b 09 2f 2a 20 63 6f 6c |t_buffer|;./* col|
|00001350| 6f 72 20 63 6f 6e 76 65 | 72 73 69 6f 6e 20 77 6f |or conve|rsion wo|
|00001360| 72 6b 73 70 61 63 65 20 | 2a 2f 0a 58 2f 2a 20 53 |rkspace |*/.X/* S|
|00001370| 69 6e 63 65 20 6f 75 72 | 20 69 6e 70 75 74 20 64 |ince our| input d|
|00001380| 61 74 61 20 69 73 20 70 | 72 65 73 65 6e 74 65 64 |ata is p|resented|
|00001390| 20 69 6e 20 74 68 65 20 | 4a 50 45 47 20 63 6f 6c | in the |JPEG col|
|000013a0| 6f 72 73 70 61 63 65 2c | 20 77 65 20 68 61 76 65 |orspace,| we have|
|000013b0| 20 74 6f 20 63 61 6c 6c | 0a 58 20 2a 20 63 6f 6c | to call|.X * col|
|000013c0| 6f 72 5f 63 6f 6e 76 65 | 72 74 20 74 6f 20 67 65 |or_conve|rt to ge|
|000013d0| 74 20 69 74 20 69 6e 74 | 6f 20 74 68 65 20 6f 75 |t it int|o the ou|
|000013e0| 74 70 75 74 20 63 6f 6c | 6f 72 73 70 61 63 65 2e |tput col|orspace.|
|000013f0| 20 20 69 6e 70 75 74 5f | 62 75 66 66 65 72 20 69 |  input_|buffer i|
|00001400| 73 20 61 0a 58 20 2a 20 | 6f 6e 65 2d 72 6f 77 2d |s a.X * |one-row-|
|00001410| 68 69 67 68 20 77 6f 72 | 6b 73 70 61 63 65 20 66 |high wor|kspace f|
|00001420| 6f 72 20 74 68 65 20 72 | 65 73 75 6c 74 20 6f 66 |or the r|esult of|
|00001430| 20 63 6f 6c 6f 72 5f 63 | 6f 6e 76 65 72 74 2e 0a | color_c|onvert..|
|00001440| 58 20 2a 2f 0a 58 0a 58 | 0a 58 2f 2a 20 44 65 63 |X */.X.X|.X/* Dec|
|00001450| 6c 61 72 61 74 69 6f 6e | 73 20 66 6f 72 20 46 6c |laration|s for Fl|
|00001460| 6f 79 64 2d 53 74 65 69 | 6e 62 65 72 67 20 64 69 |oyd-Stei|nberg di|
|00001470| 74 68 65 72 69 6e 67 2e | 0a 58 20 2a 0a 58 20 2a |thering.|.X *.X *|
|00001480| 20 45 72 72 6f 72 73 20 | 61 72 65 20 61 63 63 75 | Errors |are accu|
|00001490| 6d 75 6c 61 74 65 64 20 | 69 6e 74 6f 20 74 68 65 |mulated |into the|
|000014a0| 20 61 72 72 61 79 73 20 | 65 76 65 6e 72 6f 77 65 | arrays |evenrowe|
|000014b0| 72 72 73 5b 5d 20 61 6e | 64 20 6f 64 64 72 6f 77 |rrs[] an|d oddrow|
|000014c0| 65 72 72 73 5b 5d 2e 0a | 58 20 2a 20 54 68 65 73 |errs[]..|X * Thes|
|000014d0| 65 20 68 61 76 65 20 72 | 65 73 6f 6c 75 74 69 6f |e have r|esolutio|
|000014e0| 6e 73 20 6f 66 20 31 2f | 31 36 74 68 20 6f 66 20 |ns of 1/|16th of |
|000014f0| 61 20 70 69 78 65 6c 20 | 63 6f 75 6e 74 2e 20 20 |a pixel |count.  |
|00001500| 54 68 65 20 65 72 72 6f | 72 20 61 74 20 61 20 67 |The erro|r at a g|
|00001510| 69 76 65 6e 0a 58 20 2a | 20 70 69 78 65 6c 20 69 |iven.X *| pixel i|
|00001520| 73 20 70 72 6f 70 61 67 | 61 74 65 64 20 74 6f 20 |s propag|ated to |
|00001530| 69 74 73 20 75 6e 70 72 | 6f 63 65 73 73 65 64 20 |its unpr|ocessed |
|00001540| 6e 65 69 67 68 62 6f 72 | 73 20 75 73 69 6e 67 20 |neighbor|s using |
|00001550| 74 68 65 20 73 74 61 6e | 64 61 72 64 20 46 2d 53 |the stan|dard F-S|
|00001560| 0a 58 20 2a 20 66 72 61 | 63 74 69 6f 6e 73 2c 0a |.X * fra|ctions,.|
|00001570| 58 20 2a 09 09 2e 2e 2e | 09 28 68 65 72 65 29 09 |X *.....|.(here).|
|00001580| 37 2f 31 36 0a 58 20 2a | 09 09 33 2f 31 36 09 35 |7/16.X *|..3/16.5|
|00001590| 2f 31 36 09 31 2f 31 36 | 0a 58 20 2a 20 57 65 20 |/16.1/16|.X * We |
|000015a0| 77 6f 72 6b 20 6c 65 66 | 74 2d 74 6f 2d 72 69 67 |work lef|t-to-rig|
|000015b0| 68 74 20 6f 6e 20 65 76 | 65 6e 20 72 6f 77 73 2c |ht on ev|en rows,|
|000015c0| 20 72 69 67 68 74 2d 74 | 6f 2d 6c 65 66 74 20 6f | right-t|o-left o|
|000015d0| 6e 20 6f 64 64 20 72 6f | 77 73 2e 0a 58 20 2a 0a |n odd ro|ws..X *.|
|000015e0| 58 20 2a 20 49 6e 20 65 | 61 63 68 20 6f 66 20 74 |X * In e|ach of t|
|000015f0| 68 65 20 78 78 78 72 6f | 77 65 72 72 73 5b 5d 20 |he xxxro|werrs[] |
|00001600| 61 72 72 61 79 73 2c 20 | 69 6e 64 65 78 69 6e 67 |arrays, |indexing|
|00001610| 20 69 73 20 5b 63 6f 6d | 70 6f 6e 65 6e 74 23 5d | is [com|ponent#]|
|00001620| 5b 70 6f 73 69 74 69 6f | 6e 5d 2e 0a 58 20 2a 20 |[positio|n]..X * |
|00001630| 57 65 20 70 72 6f 76 69 | 64 65 20 28 23 63 6f 6c |We provi|de (#col|
|00001640| 75 6d 6e 73 20 2b 20 32 | 29 20 65 6e 74 72 69 65 |umns + 2|) entrie|
|00001650| 73 20 70 65 72 20 63 6f | 6d 70 6f 6e 65 6e 74 3b |s per co|mponent;|
|00001660| 20 74 68 65 20 65 78 74 | 72 61 20 65 6e 74 72 79 | the ext|ra entry|
|00001670| 20 61 74 20 65 61 63 68 | 0a 58 20 2a 20 65 6e 64 | at each|.X * end|
|00001680| 20 73 61 76 65 73 20 75 | 73 20 66 72 6f 6d 20 73 | saves u|s from s|
|00001690| 70 65 63 69 61 6c 2d 63 | 61 73 69 6e 67 20 74 68 |pecial-c|asing th|
|000016a0| 65 20 66 69 72 73 74 20 | 61 6e 64 20 6c 61 73 74 |e first |and last|
|000016b0| 20 70 69 78 65 6c 73 2e | 0a 58 20 2a 20 49 6e 20 | pixels.|.X * In |
|000016c0| 65 76 65 6e 72 6f 77 65 | 72 72 73 5b 5d 2c 20 74 |evenrowe|rrs[], t|
|000016d0| 68 65 20 65 6e 74 72 69 | 65 73 20 66 6f 72 20 61 |he entri|es for a|
|000016e0| 20 63 6f 6d 70 6f 6e 65 | 6e 74 20 61 72 65 20 73 | compone|nt are s|
|000016f0| 74 6f 72 65 64 20 6c 65 | 66 74 2d 74 6f 2d 72 69 |tored le|ft-to-ri|
|00001700| 67 68 74 2c 20 62 75 74 | 0a 58 20 2a 20 69 6e 20 |ght, but|.X * in |
|00001710| 6f 64 64 72 6f 77 65 72 | 72 73 5b 5d 20 74 68 65 |oddrower|rs[] the|
|00001720| 79 20 61 72 65 20 73 74 | 6f 72 65 64 20 72 69 67 |y are st|ored rig|
|00001730| 68 74 2d 74 6f 2d 6c 65 | 66 74 2e 20 20 54 68 69 |ht-to-le|ft.  Thi|
|00001740| 73 20 6d 65 61 6e 73 20 | 77 65 20 61 6c 77 61 79 |s means |we alway|
|00001750| 73 0a 58 20 2a 20 70 72 | 6f 63 65 73 73 20 74 68 |s.X * pr|ocess th|
|00001760| 65 20 63 75 72 72 65 6e | 74 20 72 6f 77 27 73 20 |e curren|t row's |
|00001770| 65 72 72 6f 72 20 65 6e | 74 72 69 65 73 20 69 6e |error en|tries in|
|00001780| 20 69 6e 63 72 65 61 73 | 69 6e 67 20 6f 72 64 65 | increas|ing orde|
|00001790| 72 20 61 6e 64 20 74 68 | 65 20 6e 65 78 74 0a 58 |r and th|e next.X|
|000017a0| 20 2a 20 72 6f 77 27 73 | 20 65 72 72 6f 72 20 65 | * row's| error e|
|000017b0| 6e 74 72 69 65 73 20 69 | 6e 20 64 65 63 72 65 61 |ntries i|n decrea|
|000017c0| 73 69 6e 67 20 6f 72 64 | 65 72 2c 20 72 65 67 61 |sing ord|er, rega|
|000017d0| 72 64 6c 65 73 73 20 6f | 66 20 77 68 65 74 68 65 |rdless o|f whethe|
|000017e0| 72 20 77 65 20 61 72 65 | 0a 58 20 2a 20 77 6f 72 |r we are|.X * wor|
|000017f0| 6b 69 6e 67 20 4c 2d 74 | 6f 2d 52 20 6f 72 20 52 |king L-t|o-R or R|
|00001800| 2d 74 6f 2d 4c 20 69 6e | 20 74 68 65 20 70 69 78 |-to-L in| the pix|
|00001810| 65 6c 20 64 61 74 61 21 | 0a 58 20 2a 0a 58 20 2a |el data!|.X *.X *|
|00001820| 20 4e 6f 74 65 3a 20 6f | 6e 20 61 20 77 69 64 65 | Note: o|n a wide|
|00001830| 20 69 6d 61 67 65 2c 20 | 77 65 20 6d 69 67 68 74 | image, |we might|
|00001840| 20 6e 6f 74 20 68 61 76 | 65 20 65 6e 6f 75 67 68 | not hav|e enough|
|00001850| 20 72 6f 6f 6d 20 69 6e | 20 61 20 50 43 27 73 20 | room in| a PC's |
|00001860| 6e 65 61 72 20 64 61 74 | 61 0a 58 20 2a 20 73 65 |near dat|a.X * se|
|00001870| 67 6d 65 6e 74 20 74 6f | 20 68 6f 6c 64 20 74 68 |gment to| hold th|
|00001880| 65 20 65 72 72 6f 72 20 | 61 72 72 61 79 73 3b 20 |e error |arrays; |
|00001890| 73 6f 20 74 68 65 79 20 | 61 72 65 20 61 6c 6c 6f |so they |are allo|
|000018a0| 63 61 74 65 64 20 77 69 | 74 68 20 61 6c 6c 6f 63 |cated wi|th alloc|
|000018b0| 5f 6d 65 64 69 75 6d 2e | 0a 58 20 2a 2f 0a 58 0a |_medium.|.X */.X.|
|000018c0| 58 23 69 66 64 65 66 20 | 45 49 47 48 54 5f 42 49 |X#ifdef |EIGHT_BI|
|000018d0| 54 5f 53 41 4d 50 4c 45 | 53 0a 58 74 79 70 65 64 |T_SAMPLE|S.Xtyped|
|000018e0| 65 66 20 49 4e 54 31 36 | 20 46 53 45 52 52 4f 52 |ef INT16| FSERROR|
|000018f0| 3b 09 09 2f 2a 20 31 36 | 20 62 69 74 73 20 73 68 |;../* 16| bits sh|
|00001900| 6f 75 6c 64 20 62 65 20 | 65 6e 6f 75 67 68 20 2a |ould be |enough *|
|00001910| 2f 0a 58 23 65 6c 73 65 | 0a 58 74 79 70 65 64 65 |/.X#else|.Xtypede|
|00001920| 66 20 49 4e 54 33 32 20 | 46 53 45 52 52 4f 52 3b |f INT32 |FSERROR;|
|00001930| 09 09 2f 2a 20 6d 61 79 | 20 6e 65 65 64 20 6d 6f |../* may| need mo|
|00001940| 72 65 20 74 68 61 6e 20 | 31 36 20 62 69 74 73 3f |re than |16 bits?|
|00001950| 20 2a 2f 0a 58 23 65 6e | 64 69 66 0a 58 0a 58 74 | */.X#en|dif.X.Xt|
|00001960| 79 70 65 64 65 66 20 46 | 53 45 52 52 4f 52 20 46 |ypedef F|SERROR F|
|00001970| 41 52 20 2a 46 53 45 52 | 52 50 54 52 3b 09 2f 2a |AR *FSER|RPTR;./*|
|00001980| 20 70 6f 69 6e 74 65 72 | 20 74 6f 20 65 72 72 6f | pointer| to erro|
|00001990| 72 20 61 72 72 61 79 20 | 28 69 6e 20 46 41 52 20 |r array |(in FAR |
|000019a0| 73 74 6f 72 61 67 65 21 | 29 20 2a 2f 0a 58 0a 58 |storage!|) */.X.X|
|000019b0| 73 74 61 74 69 63 20 46 | 53 45 52 52 50 54 52 20 |static F|SERRPTR |
|000019c0| 65 76 65 6e 72 6f 77 65 | 72 72 73 5b 4d 41 58 5f |evenrowe|rrs[MAX_|
|000019d0| 43 4f 4d 50 4f 4e 45 4e | 54 53 5d 3b 20 2f 2a 20 |COMPONEN|TS]; /* |
|000019e0| 65 72 72 6f 72 73 20 66 | 6f 72 20 65 76 65 6e 20 |errors f|or even |
|000019f0| 72 6f 77 73 20 2a 2f 0a | 58 73 74 61 74 69 63 20 |rows */.|Xstatic |
|00001a00| 46 53 45 52 52 50 54 52 | 20 6f 64 64 72 6f 77 65 |FSERRPTR| oddrowe|
|00001a10| 72 72 73 5b 4d 41 58 5f | 43 4f 4d 50 4f 4e 45 4e |rrs[MAX_|COMPONEN|
|00001a20| 54 53 5d 3b 20 20 2f 2a | 20 65 72 72 6f 72 73 20 |TS];  /*| errors |
|00001a30| 66 6f 72 20 6f 64 64 20 | 72 6f 77 73 20 2a 2f 0a |for odd |rows */.|
|00001a40| 58 73 74 61 74 69 63 20 | 62 6f 6f 6c 65 61 6e 20 |Xstatic |boolean |
|00001a50| 6f 6e 5f 6f 64 64 5f 72 | 6f 77 3b 09 2f 2a 20 66 |on_odd_r|ow;./* f|
|00001a60| 6c 61 67 20 74 6f 20 72 | 65 6d 65 6d 62 65 72 20 |lag to r|emember |
|00001a70| 77 68 69 63 68 20 72 6f | 77 20 77 65 20 61 72 65 |which ro|w we are|
|00001a80| 20 6f 6e 20 2a 2f 0a 58 | 0a 58 0a 58 2f 2a 0a 58 | on */.X|.X.X/*.X|
|00001a90| 20 2a 20 50 6f 6c 69 63 | 79 2d 6d 61 6b 69 6e 67 | * Polic|y-making|
|00001aa0| 20 73 75 62 72 6f 75 74 | 69 6e 65 73 20 66 6f 72 | subrout|ines for|
|00001ab0| 20 63 6f 6c 6f 72 5f 71 | 75 61 6e 74 5f 69 6e 69 | color_q|uant_ini|
|00001ac0| 74 3a 20 74 68 65 73 65 | 20 72 6f 75 74 69 6e 65 |t: these| routine|
|00001ad0| 73 20 64 65 74 65 72 6d | 69 6e 65 0a 58 20 2a 20 |s determ|ine.X * |
|00001ae0| 74 68 65 20 63 6f 6c 6f | 72 6d 61 70 20 74 6f 20 |the colo|rmap to |
|00001af0| 62 65 20 75 73 65 64 2e | 20 20 54 68 65 20 72 65 |be used.|  The re|
|00001b00| 73 74 20 6f 66 20 74 68 | 65 20 6d 6f 64 75 6c 65 |st of th|e module|
|00001b10| 20 6f 6e 6c 79 20 61 73 | 73 75 6d 65 73 20 74 68 | only as|sumes th|
|00001b20| 61 74 20 74 68 65 0a 58 | 20 2a 20 63 6f 6c 6f 72 |at the.X| * color|
|00001b30| 6d 61 70 20 69 73 20 6f | 72 74 68 6f 67 6f 6e 61 |map is o|rthogona|
|00001b40| 6c 2e 0a 58 20 2a 0a 58 | 20 2a 20 20 2a 20 73 65 |l..X *.X| *  * se|
|00001b50| 6c 65 63 74 5f 6e 63 6f | 6c 6f 72 73 20 64 65 63 |lect_nco|lors dec|
|00001b60| 69 64 65 73 20 68 6f 77 | 20 74 6f 20 64 69 76 76 |ides how| to divv|
|00001b70| 79 20 75 70 20 74 68 65 | 20 61 76 61 69 6c 61 62 |y up the| availab|
|00001b80| 6c 65 20 63 6f 6c 6f 72 | 73 0a 58 20 2a 20 20 20 |le color|s.X *   |
|00001b90| 20 61 6d 6f 6e 67 20 74 | 68 65 20 63 6f 6d 70 6f | among t|he compo|
|00001ba0| 6e 65 6e 74 73 2e 0a 58 | 20 2a 20 20 2a 20 6f 75 |nents..X| *  * ou|
|00001bb0| 74 70 75 74 5f 76 61 6c | 75 65 20 64 65 66 69 6e |tput_val|ue defin|
|00001bc0| 65 73 20 74 68 65 20 73 | 65 74 20 6f 66 20 72 65 |es the s|et of re|
|00001bd0| 70 72 65 73 65 6e 74 61 | 74 69 76 65 20 76 61 6c |presenta|tive val|
|00001be0| 75 65 73 20 66 6f 72 20 | 61 20 63 6f 6d 70 6f 6e |ues for |a compon|
|00001bf0| 65 6e 74 2e 0a 58 20 2a | 20 20 2a 20 6c 61 72 67 |ent..X *|  * larg|
|00001c00| 65 73 74 5f 69 6e 70 75 | 74 5f 76 61 6c 75 65 20 |est_inpu|t_value |
|00001c10| 64 65 66 69 6e 65 73 20 | 74 68 65 20 6d 61 70 70 |defines |the mapp|
|00001c20| 69 6e 67 20 66 72 6f 6d | 20 69 6e 70 75 74 20 76 |ing from| input v|
|00001c30| 61 6c 75 65 73 20 74 6f | 0a 58 20 2a 20 20 20 20 |alues to|.X *    |
|00001c40| 72 65 70 72 65 73 65 6e | 74 61 74 69 76 65 20 76 |represen|tative v|
|00001c50| 61 6c 75 65 73 20 66 6f | 72 20 61 20 63 6f 6d 70 |alues fo|r a comp|
|00001c60| 6f 6e 65 6e 74 2e 0a 58 | 20 2a 20 4e 6f 74 65 20 |onent..X| * Note |
|00001c70| 74 68 61 74 20 74 68 65 | 20 6c 61 74 74 65 72 20 |that the| latter |
|00001c80| 74 77 6f 20 72 6f 75 74 | 69 6e 65 73 20 6d 61 79 |two rout|ines may|
|00001c90| 20 69 6d 70 6f 73 65 20 | 64 69 66 66 65 72 65 6e | impose |differen|
|00001ca0| 74 20 70 6f 6c 69 63 69 | 65 73 20 66 6f 72 0a 58 |t polici|es for.X|
|00001cb0| 20 2a 20 64 69 66 66 65 | 72 65 6e 74 20 63 6f 6d | * diffe|rent com|
|00001cc0| 70 6f 6e 65 6e 74 73 2c | 20 74 68 6f 75 67 68 20 |ponents,| though |
|00001cd0| 74 68 69 73 20 69 73 20 | 6e 6f 74 20 63 75 72 72 |this is |not curr|
|00001ce0| 65 6e 74 6c 79 20 64 6f | 6e 65 2e 0a 58 20 2a 2f |ently do|ne..X */|
|00001cf0| 0a 58 0a 58 0a 58 4c 4f | 43 41 4c 20 69 6e 74 0a |.X.X.XLO|CAL int.|
|00001d00| 58 73 65 6c 65 63 74 5f | 6e 63 6f 6c 6f 72 73 20 |Xselect_|ncolors |
|00001d10| 28 64 65 63 6f 6d 70 72 | 65 73 73 5f 69 6e 66 6f |(decompr|ess_info|
|00001d20| 5f 70 74 72 20 63 69 6e | 66 6f 2c 20 69 6e 74 20 |_ptr cin|fo, int |
|00001d30| 4e 63 6f 6c 6f 72 73 5b | 5d 29 0a 58 2f 2a 20 44 |Ncolors[|]).X/* D|
|00001d40| 65 74 65 72 6d 69 6e 65 | 20 61 6c 6c 6f 63 61 74 |etermine| allocat|
|00001d50| 69 6f 6e 20 6f 66 20 64 | 65 73 69 72 65 64 20 63 |ion of d|esired c|
|00001d60| 6f 6c 6f 72 73 20 74 6f | 20 63 6f 6d 70 6f 6e 65 |olors to| compone|
|00001d70| 6e 74 73 2c 20 2a 2f 0a | 58 2f 2a 20 61 6e 64 20 |nts, */.|X/* and |
|00001d80| 66 69 6c 6c 20 69 6e 20 | 4e 63 6f 6c 6f 72 73 5b |fill in |Ncolors[|
|00001d90| 5d 20 61 72 72 61 79 20 | 74 6f 20 69 6e 64 69 63 |] array |to indic|
|00001da0| 61 74 65 20 63 68 6f 69 | 63 65 2e 20 2a 2f 0a 58 |ate choi|ce. */.X|
|00001db0| 2f 2a 20 52 65 74 75 72 | 6e 20 76 61 6c 75 65 20 |/* Retur|n value |
|00001dc0| 69 73 20 74 6f 74 61 6c | 20 6e 75 6d 62 65 72 20 |is total| number |
|00001dd0| 6f 66 20 63 6f 6c 6f 72 | 73 20 28 70 72 6f 64 75 |of color|s (produ|
|00001de0| 63 74 20 6f 66 20 4e 63 | 6f 6c 6f 72 73 5b 5d 20 |ct of Nc|olors[] |
|00001df0| 76 61 6c 75 65 73 29 2e | 20 2a 2f 0a 58 7b 0a 58 |values).| */.X{.X|
|00001e00| 20 20 69 6e 74 20 6e 63 | 20 3d 20 63 69 6e 66 6f |  int nc| = cinfo|
|00001e10| 2d 3e 63 6f 6c 6f 72 5f | 6f 75 74 5f 63 6f 6d 70 |->color_|out_comp|
|00001e20| 73 3b 20 2f 2a 20 6e 75 | 6d 62 65 72 20 6f 66 20 |s; /* nu|mber of |
|00001e30| 63 6f 6c 6f 72 20 63 6f | 6d 70 6f 6e 65 6e 74 73 |color co|mponents|
|00001e40| 20 2a 2f 0a 58 20 20 69 | 6e 74 20 6d 61 78 5f 63 | */.X  i|nt max_c|
|00001e50| 6f 6c 6f 72 73 20 3d 20 | 63 69 6e 66 6f 2d 3e 64 |olors = |cinfo->d|
|00001e60| 65 73 69 72 65 64 5f 6e | 75 6d 62 65 72 5f 6f 66 |esired_n|umber_of|
|00001e70| 5f 63 6f 6c 6f 72 73 3b | 0a 58 20 20 69 6e 74 20 |_colors;|.X  int |
|00001e80| 74 6f 74 61 6c 5f 63 6f | 6c 6f 72 73 2c 20 69 72 |total_co|lors, ir|
|00001e90| 6f 6f 74 2c 20 69 3b 0a | 58 20 20 6c 6f 6e 67 20 |oot, i;.|X  long |
|00001ea0| 74 65 6d 70 3b 0a 58 20 | 20 62 6f 6f 6c 65 61 6e |temp;.X | boolean|
|00001eb0| 20 63 68 61 6e 67 65 64 | 3b 0a 58 0a 58 20 20 2f | changed|;.X.X  /|
|00001ec0| 2a 20 57 65 20 63 61 6e | 20 61 6c 6c 6f 63 61 74 |* We can| allocat|
|00001ed0| 65 20 61 74 20 6c 65 61 | 73 74 20 74 68 65 20 6e |e at lea|st the n|
|00001ee0| 63 27 74 68 20 72 6f 6f | 74 20 6f 66 20 6d 61 78 |c'th roo|t of max|
|00001ef0| 5f 63 6f 6c 6f 72 73 20 | 70 65 72 20 63 6f 6d 70 |_colors |per comp|
|00001f00| 6f 6e 65 6e 74 2e 20 2a | 2f 0a 58 20 20 2f 2a 20 |onent. *|/.X  /* |
|00001f10| 43 6f 6d 70 75 74 65 20 | 66 6c 6f 6f 72 28 6e 63 |Compute |floor(nc|
|00001f20| 27 74 68 20 72 6f 6f 74 | 20 6f 66 20 6d 61 78 5f |'th root| of max_|
|00001f30| 63 6f 6c 6f 72 73 29 2e | 20 2a 2f 0a 58 20 20 69 |colors).| */.X  i|
|00001f40| 72 6f 6f 74 20 3d 20 31 | 3b 0a 58 20 20 64 6f 20 |root = 1|;.X  do |
|00001f50| 7b 0a 58 20 20 20 20 69 | 72 6f 6f 74 2b 2b 3b 0a |{.X    i|root++;.|
|00001f60| 58 20 20 20 20 74 65 6d | 70 20 3d 20 69 72 6f 6f |X    tem|p = iroo|
|00001f70| 74 3b 09 09 2f 2a 20 73 | 65 74 20 74 65 6d 70 20 |t;../* s|et temp |
|00001f80| 3d 20 69 72 6f 6f 74 20 | 2a 2a 20 6e 63 20 2a 2f |= iroot |** nc */|
|00001f90| 0a 58 20 20 20 20 66 6f | 72 20 28 69 20 3d 20 31 |.X    fo|r (i = 1|
|00001fa0| 3b 20 69 20 3c 20 6e 63 | 3b 20 69 2b 2b 29 0a 58 |; i < nc|; i++).X|
|00001fb0| 20 20 20 20 20 20 74 65 | 6d 70 20 2a 3d 20 69 72 |      te|mp *= ir|
|00001fc0| 6f 6f 74 3b 0a 58 20 20 | 7d 20 77 68 69 6c 65 20 |oot;.X  |} while |
|00001fd0| 28 74 65 6d 70 20 3c 3d | 20 28 6c 6f 6e 67 29 20 |(temp <=| (long) |
|00001fe0| 6d 61 78 5f 63 6f 6c 6f | 72 73 29 3b 20 2f 2a 20 |max_colo|rs); /* |
|00001ff0| 72 65 70 65 61 74 20 74 | 69 6c 6c 20 69 72 6f 6f |repeat t|ill iroo|
|00002000| 74 20 65 78 63 65 65 64 | 73 20 72 6f 6f 74 20 2a |t exceed|s root *|
|00002010| 2f 0a 58 20 20 69 72 6f | 6f 74 2d 2d 3b 09 09 09 |/.X  iro|ot--;...|
|00002020| 2f 2a 20 6e 6f 77 20 69 | 72 6f 6f 74 20 3d 20 66 |/* now i|root = f|
|00002030| 6c 6f 6f 72 28 72 6f 6f | 74 29 20 2a 2f 0a 58 0a |loor(roo|t) */.X.|
|00002040| 58 20 20 2f 2a 20 4d 75 | 73 74 20 68 61 76 65 20 |X  /* Mu|st have |
|00002050| 61 74 20 6c 65 61 73 74 | 20 32 20 63 6f 6c 6f 72 |at least| 2 color|
|00002060| 20 76 61 6c 75 65 73 20 | 70 65 72 20 63 6f 6d 70 | values |per comp|
|00002070| 6f 6e 65 6e 74 20 2a 2f | 0a 58 20 20 69 66 20 28 |onent */|.X  if (|
|00002080| 69 72 6f 6f 74 20 3c 20 | 32 29 0a 58 20 20 20 20 |iroot < |2).X    |
|00002090| 45 52 52 45 58 49 54 31 | 28 63 69 6e 66 6f 2d 3e |ERREXIT1|(cinfo->|
|000020a0| 65 6d 65 74 68 6f 64 73 | 2c 20 22 43 61 6e 6e 6f |emethods|, "Canno|
|000020b0| 74 20 71 75 61 6e 74 69 | 7a 65 20 74 6f 20 66 65 |t quanti|ze to fe|
|000020c0| 77 65 72 20 74 68 61 6e | 20 25 64 20 63 6f 6c 6f |wer than| %d colo|
|000020d0| 72 73 22 2c 0a 58 09 20 | 20 20 20 20 28 69 6e 74 |rs",.X. |    (int|
|000020e0| 29 20 74 65 6d 70 29 3b | 0a 58 0a 58 20 20 69 66 |) temp);|.X.X  if|
|000020f0| 20 28 63 69 6e 66 6f 2d | 3e 6f 75 74 5f 63 6f 6c | (cinfo-|>out_col|
|00002100| 6f 72 5f 73 70 61 63 65 | 20 3d 3d 20 43 53 5f 52 |or_space| == CS_R|
|00002110| 47 42 20 26 26 20 6e 63 | 20 3d 3d 20 33 29 20 7b |GB && nc| == 3) {|
|00002120| 0a 58 20 20 20 20 2f 2a | 20 57 65 20 70 72 6f 76 |.X    /*| We prov|
|00002130| 69 64 65 20 61 20 73 70 | 65 63 69 61 6c 20 70 6f |ide a sp|ecial po|
|00002140| 6c 69 63 79 20 66 6f 72 | 20 71 75 61 6e 74 69 7a |licy for| quantiz|
|00002150| 69 6e 67 20 69 6e 20 52 | 47 42 20 73 70 61 63 65 |ing in R|GB space|
|00002160| 2e 0a 58 20 20 20 20 20 | 2a 20 49 66 20 32 35 36 |..X     |* If 256|
|00002170| 20 63 6f 6c 6f 72 73 20 | 61 72 65 20 72 65 71 75 | colors |are requ|
|00002180| 65 73 74 65 64 2c 20 77 | 65 20 61 6c 6c 6f 63 61 |ested, w|e alloca|
|00002190| 74 65 20 38 20 72 65 64 | 2c 20 38 20 67 72 65 65 |te 8 red|, 8 gree|
|000021a0| 6e 2c 20 34 20 62 6c 75 | 65 20 6c 65 76 65 6c 73 |n, 4 blu|e levels|
|000021b0| 3b 0a 58 20 20 20 20 20 | 2a 20 74 68 69 73 20 63 |;.X     |* this c|
|000021c0| 6f 72 72 65 73 70 6f 6e | 64 73 20 74 6f 20 74 68 |orrespon|ds to th|
|000021d0| 65 20 63 6f 6d 6d 6f 6e | 20 33 2f 33 2f 32 2d 62 |e common| 3/3/2-b|
|000021e0| 69 74 20 73 63 68 65 6d | 65 2e 20 20 46 6f 72 20 |it schem|e.  For |
|000021f0| 6f 74 68 65 72 20 74 6f | 74 61 6c 73 2c 0a 58 20 |other to|tals,.X |
|00002200| 20 20 20 20 2a 20 74 68 | 65 20 63 6f 75 6e 74 73 |    * th|e counts|
|00002210| 20 61 72 65 20 73 65 74 | 20 73 6f 20 74 68 61 74 | are set| so that|
|00002220| 20 74 68 65 20 6e 75 6d | 62 65 72 20 6f 66 20 63 | the num|ber of c|
|00002230| 6f 6c 6f 72 73 20 61 6c | 6c 6f 63 61 74 65 64 20 |olors al|located |
|00002240| 74 6f 20 65 61 63 68 0a | 58 20 20 20 20 20 2a 20 |to each.|X     * |
|00002250| 63 6f 6d 70 6f 6e 65 6e | 74 20 61 72 65 20 72 6f |componen|t are ro|
|00002260| 75 67 68 6c 79 20 69 6e | 20 74 68 65 20 70 72 6f |ughly in| the pro|
|00002270| 70 6f 72 74 69 6f 6e 20 | 52 20 33 2c 20 47 20 34 |portion |R 3, G 4|
|00002280| 2c 20 42 20 32 2e 0a 58 | 20 20 20 20 20 2a 20 46 |, B 2..X|     * F|
|00002290| 6f 72 20 6c 6f 77 20 63 | 6f 6c 6f 72 20 63 6f 75 |or low c|olor cou|
|000022a0| 6e 74 73 2c 20 69 74 27 | 73 20 65 61 73 69 65 72 |nts, it'|s easier|
|000022b0| 20 74 6f 20 68 61 72 64 | 77 69 72 65 20 74 68 65 | to hard|wire the|
|000022c0| 20 6f 70 74 69 6d 61 6c | 20 63 68 6f 69 63 65 73 | optimal| choices|
|000022d0| 0a 58 20 20 20 20 20 2a | 20 74 68 61 6e 20 74 72 |.X     *| than tr|
|000022e0| 79 20 74 6f 20 74 77 65 | 61 6b 20 74 68 65 20 61 |y to twe|ak the a|
|000022f0| 6c 67 6f 72 69 74 68 6d | 20 74 6f 20 67 65 6e 65 |lgorithm| to gene|
|00002300| 72 61 74 65 20 74 68 65 | 6d 2e 0a 58 20 20 20 20 |rate the|m..X    |
|00002310| 20 2a 2f 0a 58 20 20 20 | 20 69 66 20 28 6d 61 78 | */.X   | if (max|
|00002320| 5f 63 6f 6c 6f 72 73 20 | 3d 3d 20 32 35 36 29 20 |_colors |== 256) |
|00002330| 7b 0a 58 20 20 20 20 20 | 20 4e 63 6f 6c 6f 72 73 |{.X     | Ncolors|
|00002340| 5b 30 5d 20 3d 20 38 3b | 20 20 4e 63 6f 6c 6f 72 |[0] = 8;|  Ncolor|
|00002350| 73 5b 31 5d 20 3d 20 38 | 3b 20 20 4e 63 6f 6c 6f |s[1] = 8|;  Ncolo|
|00002360| 72 73 5b 32 5d 20 3d 20 | 34 3b 0a 58 20 20 20 20 |rs[2] = |4;.X    |
|00002370| 20 20 72 65 74 75 72 6e | 20 32 35 36 3b 0a 58 20 |  return| 256;.X |
|00002380| 20 20 20 7d 0a 58 20 20 | 20 20 69 66 20 28 6d 61 |   }.X  |  if (ma|
|00002390| 78 5f 63 6f 6c 6f 72 73 | 20 3c 20 31 32 29 20 7b |x_colors| < 12) {|
|000023a0| 0a 58 20 20 20 20 20 20 | 2f 2a 20 46 69 78 65 64 |.X      |/* Fixed|
|000023b0| 20 6d 61 70 70 69 6e 67 | 20 66 6f 72 20 38 20 63 | mapping| for 8 c|
|000023c0| 6f 6c 6f 72 73 20 2a 2f | 0a 58 20 20 20 20 20 20 |olors */|.X      |
|000023d0| 4e 63 6f 6c 6f 72 73 5b | 30 5d 20 3d 20 4e 63 6f |Ncolors[|0] = Nco|
|000023e0| 6c 6f 72 73 5b 31 5d 20 | 3d 20 4e 63 6f 6c 6f 72 |lors[1] |= Ncolor|
|000023f0| 73 5b 32 5d 20 3d 20 32 | 3b 0a 58 20 20 20 20 7d |s[2] = 2|;.X    }|
|00002400| 20 65 6c 73 65 20 69 66 | 20 28 6d 61 78 5f 63 6f | else if| (max_co|
|00002410| 6c 6f 72 73 20 3c 20 31 | 38 29 20 7b 0a 58 20 20 |lors < 1|8) {.X  |
|00002420| 20 20 20 20 2f 2a 20 46 | 69 78 65 64 20 6d 61 70 |    /* F|ixed map|
|00002430| 70 69 6e 67 20 66 6f 72 | 20 31 32 20 63 6f 6c 6f |ping for| 12 colo|
|00002440| 72 73 20 2a 2f 0a 58 20 | 20 20 20 20 20 4e 63 6f |rs */.X |     Nco|
|00002450| 6c 6f 72 73 5b 30 5d 20 | 3d 20 32 3b 20 20 4e 63 |lors[0] |= 2;  Nc|
|00002460| 6f 6c 6f 72 73 5b 31 5d | 20 3d 20 33 3b 20 20 4e |olors[1]| = 3;  N|
|00002470| 63 6f 6c 6f 72 73 5b 32 | 5d 20 3d 20 32 3b 0a 58 |colors[2|] = 2;.X|
|00002480| 20 20 20 20 7d 20 65 6c | 73 65 20 69 66 20 28 6d |    } el|se if (m|
|00002490| 61 78 5f 63 6f 6c 6f 72 | 73 20 3c 20 32 34 29 20 |ax_color|s < 24) |
|000024a0| 7b 0a 58 20 20 20 20 20 | 20 2f 2a 20 46 69 78 65 |{.X     | /* Fixe|
|000024b0| 64 20 6d 61 70 70 69 6e | 67 20 66 6f 72 20 31 38 |d mappin|g for 18|
|000024c0| 20 63 6f 6c 6f 72 73 20 | 2a 2f 0a 58 20 20 20 20 | colors |*/.X    |
|000024d0| 20 20 4e 63 6f 6c 6f 72 | 73 5b 30 5d 20 3d 20 33 |  Ncolor|s[0] = 3|
|000024e0| 3b 20 20 4e 63 6f 6c 6f | 72 73 5b 31 5d 20 3d 20 |;  Ncolo|rs[1] = |
|000024f0| 33 3b 20 20 4e 63 6f 6c | 6f 72 73 5b 32 5d 20 3d |3;  Ncol|ors[2] =|
|00002500| 20 32 3b 0a 58 20 20 20 | 20 7d 20 65 6c 73 65 20 | 2;.X   | } else |
|00002510| 69 66 20 28 6d 61 78 5f | 63 6f 6c 6f 72 73 20 3c |if (max_|colors <|
|00002520| 20 32 37 29 20 7b 0a 58 | 20 20 20 20 20 20 2f 2a | 27) {.X|      /*|
|00002530| 20 46 69 78 65 64 20 6d | 61 70 70 69 6e 67 20 66 | Fixed m|apping f|
|00002540| 6f 72 20 32 34 20 63 6f | 6c 6f 72 73 20 2a 2f 0a |or 24 co|lors */.|
|00002550| 58 20 20 20 20 20 20 4e | 63 6f 6c 6f 72 73 5b 30 |X      N|colors[0|
|00002560| 5d 20 3d 20 33 3b 20 20 | 4e 63 6f 6c 6f 72 73 5b |] = 3;  |Ncolors[|
|00002570| 31 5d 20 3d 20 34 3b 20 | 20 4e 63 6f 6c 6f 72 73 |1] = 4; | Ncolors|
|00002580| 5b 32 5d 20 3d 20 32 3b | 0a 58 20 20 20 20 7d 20 |[2] = 2;|.X    } |
|00002590| 65 6c 73 65 20 69 66 20 | 28 6d 61 78 5f 63 6f 6c |else if |(max_col|
|000025a0| 6f 72 73 20 3c 20 33 36 | 29 20 7b 0a 58 20 20 20 |ors < 36|) {.X   |
|000025b0| 20 20 20 2f 2a 20 46 69 | 78 65 64 20 6d 61 70 70 |   /* Fi|xed mapp|
|000025c0| 69 6e 67 20 66 6f 72 20 | 32 37 20 63 6f 6c 6f 72 |ing for |27 color|
|000025d0| 73 20 2a 2f 0a 58 20 20 | 20 20 20 20 4e 63 6f 6c |s */.X  |    Ncol|
|000025e0| 6f 72 73 5b 30 5d 20 3d | 20 33 3b 20 20 4e 63 6f |ors[0] =| 3;  Nco|
|000025f0| 6c 6f 72 73 5b 31 5d 20 | 3d 20 33 3b 20 20 4e 63 |lors[1] |= 3;  Nc|
|00002600| 6f 6c 6f 72 73 5b 32 5d | 20 3d 20 33 3b 0a 58 20 |olors[2]| = 3;.X |
|00002610| 20 20 20 7d 20 65 6c 73 | 65 20 7b 0a 58 20 20 20 |   } els|e {.X   |
|00002620| 20 20 20 2f 2a 20 74 68 | 65 73 65 20 77 65 69 67 |   /* th|ese weig|
|00002630| 68 74 73 20 61 72 65 20 | 72 65 61 64 69 6c 79 20 |hts are |readily |
|00002640| 64 65 72 69 76 65 64 20 | 77 69 74 68 20 61 20 6c |derived |with a l|
|00002650| 69 74 74 6c 65 20 61 6c | 67 65 62 72 61 20 2a 2f |ittle al|gebra */|
|00002660| 0a 58 20 20 20 20 20 20 | 4e 63 6f 6c 6f 72 73 5b |.X      |Ncolors[|
|00002670| 30 5d 20 3d 20 28 69 72 | 6f 6f 74 20 2a 20 32 36 |0] = (ir|oot * 26|
|00002680| 36 29 20 3e 3e 20 38 3b | 20 2f 2a 20 52 20 77 65 |6) >> 8;| /* R we|
|00002690| 69 67 68 74 20 69 73 20 | 31 2e 30 34 30 30 20 2a |ight is |1.0400 *|
|000026a0| 2f 0a 58 20 20 20 20 20 | 20 4e 63 6f 6c 6f 72 73 |/.X     | Ncolors|
|000026b0| 5b 31 5d 20 3d 20 28 69 | 72 6f 6f 74 20 2a 20 33 |[1] = (i|root * 3|
|000026c0| 35 35 29 20 3e 3e 20 38 | 3b 20 2f 2a 20 47 20 77 |55) >> 8|; /* G w|
|000026d0| 65 69 67 68 74 20 69 73 | 20 31 2e 33 38 36 37 20 |eight is| 1.3867 |
|000026e0| 2a 2f 0a 58 20 20 20 20 | 20 20 4e 63 6f 6c 6f 72 |*/.X    |  Ncolor|
|000026f0| 73 5b 32 5d 20 3d 20 28 | 69 72 6f 6f 74 20 2a 20 |s[2] = (|iroot * |
|00002700| 31 37 37 29 20 3e 3e 20 | 38 3b 20 2f 2a 20 42 20 |177) >> |8; /* B |
|00002710| 77 65 69 67 68 74 20 69 | 73 20 30 2e 36 39 33 34 |weight i|s 0.6934|
|00002720| 20 2a 2f 0a 58 20 20 20 | 20 7d 0a 58 20 20 20 20 | */.X   | }.X    |
|00002730| 74 6f 74 61 6c 5f 63 6f | 6c 6f 72 73 20 3d 20 4e |total_co|lors = N|
|00002740| 63 6f 6c 6f 72 73 5b 30 | 5d 20 2a 20 4e 63 6f 6c |colors[0|] * Ncol|
|00002750| 6f 72 73 5b 31 5d 20 2a | 20 4e 63 6f 6c 6f 72 73 |ors[1] *| Ncolors|
|00002760| 5b 32 5d 3b 0a 58 20 20 | 20 20 2f 2a 20 54 68 65 |[2];.X  |  /* The|
|00002770| 20 61 62 6f 76 65 20 63 | 6f 6d 70 75 74 61 74 69 | above c|omputati|
|00002780| 6f 6e 20 70 72 6f 64 75 | 63 65 73 20 22 66 6c 6f |on produ|ces "flo|
|00002790| 6f 72 22 20 76 61 6c 75 | 65 73 2c 20 73 6f 20 77 |or" valu|es, so w|
|000027a0| 65 20 6d 61 79 20 62 65 | 20 61 62 6c 65 20 74 6f |e may be| able to|
|000027b0| 0a 58 20 20 20 20 20 2a | 20 69 6e 63 72 65 6d 65 |.X     *| increme|
|000027c0| 6e 74 20 74 68 65 20 63 | 6f 75 6e 74 20 66 6f 72 |nt the c|ount for|
|000027d0| 20 6f 6e 65 20 6f 72 20 | 6d 6f 72 65 20 63 6f 6d | one or |more com|
|000027e0| 70 6f 6e 65 6e 74 73 20 | 77 69 74 68 6f 75 74 20 |ponents |without |
|000027f0| 65 78 63 65 65 64 69 6e | 67 0a 58 20 20 20 20 20 |exceedin|g.X     |
|00002800| 2a 20 6d 61 78 5f 63 6f | 6c 6f 72 73 2e 20 20 57 |* max_co|lors.  W|
|00002810| 65 20 74 72 79 20 69 6e | 20 74 68 65 20 6f 72 64 |e try in| the ord|
|00002820| 65 72 20 42 2c 20 47 2c | 20 52 2e 0a 58 20 20 20 |er B, G,| R..X   |
|00002830| 20 20 2a 2f 0a 58 20 20 | 20 20 64 6f 20 7b 0a 58 |  */.X  |  do {.X|
|00002840| 20 20 20 20 20 20 63 68 | 61 6e 67 65 64 20 3d 20 |      ch|anged = |
|00002850| 46 41 4c 53 45 3b 0a 58 | 20 20 20 20 20 20 66 6f |FALSE;.X|      fo|
|00002860| 72 20 28 69 20 3d 20 32 | 3b 20 69 20 3e 3d 20 30 |r (i = 2|; i >= 0|
|00002870| 3b 20 69 2d 2d 29 20 7b | 0a 58 09 2f 2a 20 63 61 |; i--) {|.X./* ca|
|00002880| 6c 63 75 6c 61 74 65 20 | 6e 65 77 20 74 6f 74 61 |lculate |new tota|
|00002890| 6c 5f 63 6f 6c 6f 72 73 | 20 69 66 20 4e 63 6f 6c |l_colors| if Ncol|
|000028a0| 6f 72 73 5b 69 5d 20 69 | 73 20 69 6e 63 72 65 6d |ors[i] i|s increm|
|000028b0| 65 6e 74 65 64 20 2a 2f | 0a 58 09 74 65 6d 70 20 |ented */|.X.temp |
|000028c0| 3d 20 74 6f 74 61 6c 5f | 63 6f 6c 6f 72 73 20 2f |= total_|colors /|
|000028d0| 20 4e 63 6f 6c 6f 72 73 | 5b 69 5d 3b 0a 58 09 74 | Ncolors|[i];.X.t|
|000028e0| 65 6d 70 20 2a 3d 20 4e | 63 6f 6c 6f 72 73 5b 69 |emp *= N|colors[i|
|000028f0| 5d 2b 31 3b 09 2f 2a 20 | 64 6f 6e 65 20 69 6e 20 |]+1;./* |done in |
|00002900| 6c 6f 6e 67 20 61 72 69 | 74 68 20 74 6f 20 61 76 |long ari|th to av|
|00002910| 6f 69 64 20 6f 66 6c 6f | 20 2a 2f 0a 58 09 69 66 |oid oflo| */.X.if|
|00002920| 20 28 74 65 6d 70 20 3c | 3d 20 28 6c 6f 6e 67 29 | (temp <|= (long)|
|00002930| 20 6d 61 78 5f 63 6f 6c | 6f 72 73 29 20 7b 0a 58 | max_col|ors) {.X|
|00002940| 09 20 20 4e 63 6f 6c 6f | 72 73 5b 69 5d 2b 2b 3b |.  Ncolo|rs[i]++;|
|00002950| 09 09 2f 2a 20 4f 4b 2c | 20 61 70 70 6c 79 20 74 |../* OK,| apply t|
|00002960| 68 65 20 69 6e 63 72 65 | 6d 65 6e 74 20 2a 2f 0a |he incre|ment */.|
|00002970| 58 09 20 20 74 6f 74 61 | 6c 5f 63 6f 6c 6f 72 73 |X.  tota|l_colors|
|00002980| 20 3d 20 28 69 6e 74 29 | 20 74 65 6d 70 3b 0a 58 | = (int)| temp;.X|
|00002990| 09 20 20 63 68 61 6e 67 | 65 64 20 3d 20 54 52 55 |.  chang|ed = TRU|
|000029a0| 45 3b 0a 58 09 7d 0a 58 | 20 20 20 20 20 20 7d 0a |E;.X.}.X|      }.|
|000029b0| 58 20 20 20 20 7d 20 77 | 68 69 6c 65 20 28 63 68 |X    } w|hile (ch|
|000029c0| 61 6e 67 65 64 29 3b 09 | 09 2f 2a 20 6c 6f 6f 70 |anged);.|./* loop|
|000029d0| 20 75 6e 74 69 6c 20 6e | 6f 20 69 6e 63 72 65 6d | until n|o increm|
|000029e0| 65 6e 74 20 69 73 20 70 | 6f 73 73 69 62 6c 65 20 |ent is p|ossible |
|000029f0| 2a 2f 0a 58 20 20 7d 20 | 65 6c 73 65 20 7b 0a 58 |*/.X  } |else {.X|
|00002a00| 20 20 20 20 2f 2a 20 46 | 6f 72 20 61 6e 79 20 63 |    /* F|or any c|
|00002a10| 6f 6c 6f 72 73 70 61 63 | 65 20 62 65 73 69 64 65 |olorspac|e beside|
|00002a20| 73 20 52 47 42 2c 20 74 | 72 65 61 74 20 61 6c 6c |s RGB, t|reat all|
|00002a30| 20 74 68 65 20 63 6f 6d | 70 6f 6e 65 6e 74 73 20 | the com|ponents |
|00002a40| 65 71 75 61 6c 6c 79 2e | 20 2a 2f 0a 58 0a 58 20 |equally.| */.X.X |
|00002a50| 20 20 20 2f 2a 20 49 6e | 69 74 69 61 6c 69 7a 65 |   /* In|itialize|
|00002a60| 20 74 6f 20 69 72 6f 6f | 74 20 63 6f 6c 6f 72 20 | to iroo|t color |
|00002a70| 76 61 6c 75 65 73 20 66 | 6f 72 20 65 61 63 68 20 |values f|or each |
|00002a80| 63 6f 6d 70 6f 6e 65 6e | 74 20 2a 2f 0a 58 20 20 |componen|t */.X  |
|00002a90| 20 20 74 6f 74 61 6c 5f | 63 6f 6c 6f 72 73 20 3d |  total_|colors =|
|00002aa0| 20 31 3b 0a 58 20 20 20 | 20 66 6f 72 20 28 69 20 | 1;.X   | for (i |
|00002ab0| 3d 20 30 3b 20 69 20 3c | 20 6e 63 3b 20 69 2b 2b |= 0; i <| nc; i++|
|00002ac0| 29 20 7b 0a 58 20 20 20 | 20 20 20 4e 63 6f 6c 6f |) {.X   |   Ncolo|
|00002ad0| 72 73 5b 69 5d 20 3d 20 | 69 72 6f 6f 74 3b 0a 58 |rs[i] = |iroot;.X|
|00002ae0| 20 20 20 20 20 20 74 6f | 74 61 6c 5f 63 6f 6c 6f |      to|tal_colo|
|00002af0| 72 73 20 2a 3d 20 69 72 | 6f 6f 74 3b 0a 58 20 20 |rs *= ir|oot;.X  |
|00002b00| 20 20 7d 0a 58 20 20 20 | 20 2f 2a 20 57 65 20 6d |  }.X   | /* We m|
|00002b10| 61 79 20 62 65 20 61 62 | 6c 65 20 74 6f 20 69 6e |ay be ab|le to in|
|00002b20| 63 72 65 6d 65 6e 74 20 | 74 68 65 20 63 6f 75 6e |crement |the coun|
|00002b30| 74 20 66 6f 72 20 6f 6e | 65 20 6f 72 20 6d 6f 72 |t for on|e or mor|
|00002b40| 65 20 63 6f 6d 70 6f 6e | 65 6e 74 73 20 77 69 74 |e compon|ents wit|
|00002b50| 68 6f 75 74 0a 58 20 20 | 20 20 20 2a 20 65 78 63 |hout.X  |   * exc|
|00002b60| 65 65 64 69 6e 67 20 6d | 61 78 5f 63 6f 6c 6f 72 |eeding m|ax_color|
|00002b70| 73 2c 20 74 68 6f 75 67 | 68 20 77 65 20 6b 6e 6f |s, thoug|h we kno|
|00002b80| 77 20 6e 6f 74 20 61 6c | 6c 20 63 61 6e 20 62 65 |w not al|l can be|
|00002b90| 20 69 6e 63 72 65 6d 65 | 6e 74 65 64 2e 0a 58 20 | increme|nted..X |
|00002ba0| 20 20 20 20 2a 2f 0a 58 | 20 20 20 20 66 6f 72 20 |    */.X|    for |
|00002bb0| 28 69 20 3d 20 30 3b 20 | 69 20 3c 20 6e 63 3b 20 |(i = 0; |i < nc; |
|00002bc0| 69 2b 2b 29 20 7b 0a 58 | 20 20 20 20 20 20 2f 2a |i++) {.X|      /*|
|00002bd0| 20 63 61 6c 63 75 6c 61 | 74 65 20 6e 65 77 20 74 | calcula|te new t|
|00002be0| 6f 74 61 6c 5f 63 6f 6c | 6f 72 73 20 69 66 20 4e |otal_col|ors if N|
|00002bf0| 63 6f 6c 6f 72 73 5b 69 | 5d 20 69 73 20 69 6e 63 |colors[i|] is inc|
|00002c00| 72 65 6d 65 6e 74 65 64 | 20 2a 2f 0a 58 20 20 20 |remented| */.X   |
|00002c10| 20 20 20 74 65 6d 70 20 | 3d 20 74 6f 74 61 6c 5f |   temp |= total_|
|00002c20| 63 6f 6c 6f 72 73 20 2f | 20 4e 63 6f 6c 6f 72 73 |colors /| Ncolors|
|00002c30| 5b 69 5d 3b 0a 58 20 20 | 20 20 20 20 74 65 6d 70 |[i];.X  |    temp|
|00002c40| 20 2a 3d 20 4e 63 6f 6c | 6f 72 73 5b 69 5d 2b 31 | *= Ncol|ors[i]+1|
|00002c50| 3b 09 2f 2a 20 64 6f 6e | 65 20 69 6e 20 6c 6f 6e |;./* don|e in lon|
|00002c60| 67 20 61 72 69 74 68 20 | 74 6f 20 61 76 6f 69 64 |g arith |to avoid|
|00002c70| 20 6f 66 6c 6f 20 2a 2f | 0a 58 20 20 20 20 20 20 | oflo */|.X      |
|00002c80| 69 66 20 28 74 65 6d 70 | 20 3e 20 28 6c 6f 6e 67 |if (temp| > (long|
|00002c90| 29 20 6d 61 78 5f 63 6f | 6c 6f 72 73 29 0a 58 09 |) max_co|lors).X.|
|00002ca0| 62 72 65 61 6b 3b 09 09 | 09 2f 2a 20 77 6f 6e 27 |break;..|./* won'|
|00002cb0| 74 20 66 69 74 2c 20 64 | 6f 6e 65 20 2a 2f 0a 58 |t fit, d|one */.X|
|00002cc0| 20 20 20 20 20 20 4e 63 | 6f 6c 6f 72 73 5b 69 5d |      Nc|olors[i]|
|00002cd0| 2b 2b 3b 09 09 2f 2a 20 | 4f 4b 2c 20 61 70 70 6c |++;../* |OK, appl|
|00002ce0| 79 20 74 68 65 20 69 6e | 63 72 65 6d 65 6e 74 20 |y the in|crement |
|00002cf0| 2a 2f 0a 58 20 20 20 20 | 20 20 74 6f 74 61 6c 5f |*/.X    |  total_|
|00002d00| 63 6f 6c 6f 72 73 20 3d | 20 28 69 6e 74 29 20 74 |colors =| (int) t|
|00002d10| 65 6d 70 3b 0a 58 20 20 | 20 20 7d 0a 58 20 20 7d |emp;.X  |  }.X  }|
|00002d20| 0a 58 0a 58 20 20 72 65 | 74 75 72 6e 20 74 6f 74 |.X.X  re|turn tot|
|00002d30| 61 6c 5f 63 6f 6c 6f 72 | 73 3b 0a 58 7d 0a 58 0a |al_color|s;.X}.X.|
|00002d40| 58 0a 58 4c 4f 43 41 4c | 20 69 6e 74 0a 58 6f 75 |X.XLOCAL| int.Xou|
|00002d50| 74 70 75 74 5f 76 61 6c | 75 65 20 28 64 65 63 6f |tput_val|ue (deco|
|00002d60| 6d 70 72 65 73 73 5f 69 | 6e 66 6f 5f 70 74 72 20 |mpress_i|nfo_ptr |
|00002d70| 63 69 6e 66 6f 2c 20 69 | 6e 74 20 63 69 2c 20 69 |cinfo, i|nt ci, i|
|00002d80| 6e 74 20 6a 2c 20 69 6e | 74 20 6d 61 78 6a 29 0a |nt j, in|t maxj).|
|00002d90| 58 2f 2a 20 52 65 74 75 | 72 6e 20 6a 27 74 68 20 |X/* Retu|rn j'th |
|00002da0| 6f 75 74 70 75 74 20 76 | 61 6c 75 65 2c 20 77 68 |output v|alue, wh|
|00002db0| 65 72 65 20 6a 20 77 69 | 6c 6c 20 72 61 6e 67 65 |ere j wi|ll range|
|00002dc0| 20 66 72 6f 6d 20 30 20 | 74 6f 20 6d 61 78 6a 20 | from 0 |to maxj |
|00002dd0| 2a 2f 0a 58 2f 2a 20 54 | 68 65 20 6f 75 74 70 75 |*/.X/* T|he outpu|
|00002de0| 74 20 76 61 6c 75 65 73 | 20 6d 75 73 74 20 66 61 |t values| must fa|
|00002df0| 6c 6c 20 69 6e 20 30 2e | 2e 4d 41 58 4a 53 41 4d |ll in 0.|.MAXJSAM|
|00002e00| 50 4c 45 20 69 6e 20 69 | 6e 63 72 65 61 73 69 6e |PLE in i|ncreasin|
|00002e10| 67 20 6f 72 64 65 72 20 | 2a 2f 0a 58 7b 0a 58 20 |g order |*/.X{.X |
|00002e20| 20 2f 2a 20 57 65 20 61 | 6c 77 61 79 73 20 70 72 | /* We a|lways pr|
|00002e30| 6f 76 69 64 65 20 76 61 | 6c 75 65 73 20 30 20 61 |ovide va|lues 0 a|
|00002e40| 6e 64 20 4d 41 58 4a 53 | 41 4d 50 4c 45 20 66 6f |nd MAXJS|AMPLE fo|
|00002e50| 72 20 65 61 63 68 20 63 | 6f 6d 70 6f 6e 65 6e 74 |r each c|omponent|
|00002e60| 3b 0a 58 20 20 20 2a 20 | 61 6e 79 20 61 64 64 69 |;.X   * |any addi|
|00002e70| 74 69 6f 6e 61 6c 20 76 | 61 6c 75 65 73 20 61 72 |tional v|alues ar|
|00002e80| 65 20 65 71 75 61 6c 6c | 79 20 73 70 61 63 65 64 |e equall|y spaced|
|00002e90| 20 62 65 74 77 65 65 6e | 20 74 68 65 73 65 20 6c | between| these l|
|00002ea0| 69 6d 69 74 73 2e 0a 58 | 20 20 20 2a 20 28 46 6f |imits..X|   * (Fo|
|00002eb0| 72 63 69 6e 67 20 74 68 | 65 20 75 70 70 65 72 20 |rcing th|e upper |
|00002ec0| 61 6e 64 20 6c 6f 77 65 | 72 20 76 61 6c 75 65 73 |and lowe|r values|
|00002ed0| 20 74 6f 20 74 68 65 20 | 6c 69 6d 69 74 73 20 65 | to the |limits e|
|00002ee0| 6e 73 75 72 65 73 20 74 | 68 61 74 0a 58 20 20 20 |nsures t|hat.X   |
|00002ef0| 2a 20 64 69 74 68 65 72 | 69 6e 67 20 63 61 6e 27 |* dither|ing can'|
|00002f00| 74 20 70 72 6f 64 75 63 | 65 20 61 20 63 6f 6c 6f |t produc|e a colo|
|00002f10| 72 20 6f 75 74 73 69 64 | 65 20 74 68 65 20 73 65 |r outsid|e the se|
|00002f20| 6c 65 63 74 65 64 20 67 | 61 6d 75 74 2e 29 0a 58 |lected g|amut.).X|
|00002f30| 20 20 20 2a 2f 0a 58 20 | 20 72 65 74 75 72 6e 20 |   */.X | return |
|00002f40| 28 69 6e 74 29 20 28 28 | 28 49 4e 54 33 32 29 20 |(int) ((|(INT32) |
|00002f50| 6a 20 2a 20 4d 41 58 4a | 53 41 4d 50 4c 45 20 2b |j * MAXJ|SAMPLE +|
|00002f60| 20 6d 61 78 6a 2f 32 29 | 20 2f 20 6d 61 78 6a 29 | maxj/2)| / maxj)|
|00002f70| 3b 0a 58 7d 0a 58 0a 58 | 0a 58 4c 4f 43 41 4c 20 |;.X}.X.X|.XLOCAL |
|00002f80| 69 6e 74 0a 58 6c 61 72 | 67 65 73 74 5f 69 6e 70 |int.Xlar|gest_inp|
|00002f90| 75 74 5f 76 61 6c 75 65 | 20 28 64 65 63 6f 6d 70 |ut_value| (decomp|
|00002fa0| 72 65 73 73 5f 69 6e 66 | 6f 5f 70 74 72 20 63 69 |ress_inf|o_ptr ci|
|00002fb0| 6e 66 6f 2c 20 69 6e 74 | 20 63 69 2c 20 69 6e 74 |nfo, int| ci, int|
|00002fc0| 20 6a 2c 20 69 6e 74 20 | 6d 61 78 6a 29 0a 58 2f | j, int |maxj).X/|
|00002fd0| 2a 20 52 65 74 75 72 6e | 20 6c 61 72 67 65 73 74 |* Return| largest|
|00002fe0| 20 69 6e 70 75 74 20 76 | 61 6c 75 65 20 74 68 61 | input v|alue tha|
|00002ff0| 74 20 73 68 6f 75 6c 64 | 20 6d 61 70 20 74 6f 20 |t should| map to |
|00003000| 6a 27 74 68 20 6f 75 74 | 70 75 74 20 76 61 6c 75 |j'th out|put valu|
|00003010| 65 20 2a 2f 0a 58 2f 2a | 20 4d 75 73 74 20 68 61 |e */.X/*| Must ha|
|00003020| 76 65 20 6c 61 72 67 65 | 73 74 28 6a 3d 30 29 20 |ve large|st(j=0) |
|00003030| 3e 3d 20 30 2c 20 61 6e | 64 20 6c 61 72 67 65 73 |>= 0, an|d larges|
|00003040| 74 28 6a 3d 6d 61 78 6a | 29 20 3e 3d 20 4d 41 58 |t(j=maxj|) >= MAX|
|00003050| 4a 53 41 4d 50 4c 45 20 | 2a 2f 0a 58 7b 0a 58 20 |JSAMPLE |*/.X{.X |
|00003060| 20 2f 2a 20 42 72 65 61 | 6b 70 6f 69 6e 74 73 20 | /* Brea|kpoints |
|00003070| 61 72 65 20 68 61 6c 66 | 77 61 79 20 62 65 74 77 |are half|way betw|
|00003080| 65 65 6e 20 76 61 6c 75 | 65 73 20 72 65 74 75 72 |een valu|es retur|
|00003090| 6e 65 64 20 62 79 20 6f | 75 74 70 75 74 5f 76 61 |ned by o|utput_va|
|000030a0| 6c 75 65 20 2a 2f 0a 58 | 20 20 72 65 74 75 72 6e |lue */.X|  return|
|000030b0| 20 28 69 6e 74 29 20 28 | 28 28 49 4e 54 33 32 29 | (int) (|((INT32)|
|000030c0| 20 28 32 2a 6a 20 2b 20 | 31 29 20 2a 20 4d 41 58 | (2*j + |1) * MAX|
|000030d0| 4a 53 41 4d 50 4c 45 20 | 2b 20 6d 61 78 6a 29 20 |JSAMPLE |+ maxj) |
|000030e0| 2f 20 28 32 2a 6d 61 78 | 6a 29 29 3b 0a 58 7d 0a |/ (2*max|j));.X}.|
|000030f0| 58 0a 58 0a 58 2f 2a 0a | 58 20 2a 20 49 6e 69 74 |X.X.X/*.|X * Init|
|00003100| 69 61 6c 69 7a 65 20 66 | 6f 72 20 6f 6e 65 2d 70 |ialize f|or one-p|
|00003110| 61 73 73 20 63 6f 6c 6f | 72 20 71 75 61 6e 74 69 |ass colo|r quanti|
|00003120| 7a 61 74 69 6f 6e 2e 0a | 58 20 2a 2f 0a 58 0a 58 |zation..|X */.X.X|
|00003130| 4d 45 54 48 4f 44 44 45 | 46 20 76 6f 69 64 0a 58 |METHODDE|F void.X|
|00003140| 63 6f 6c 6f 72 5f 71 75 | 61 6e 74 5f 69 6e 69 74 |color_qu|ant_init|
|00003150| 20 28 64 65 63 6f 6d 70 | 72 65 73 73 5f 69 6e 66 | (decomp|ress_inf|
|00003160| 6f 5f 70 74 72 20 63 69 | 6e 66 6f 29 0a 58 7b 0a |o_ptr ci|nfo).X{.|
|00003170| 58 20 20 69 6e 74 20 74 | 6f 74 61 6c 5f 63 6f 6c |X  int t|otal_col|
|00003180| 6f 72 73 3b 09 09 2f 2a | 20 4e 75 6d 62 65 72 20 |ors;../*| Number |
|00003190| 6f 66 20 64 69 73 74 69 | 6e 63 74 20 6f 75 74 70 |of disti|nct outp|
|000031a0| 75 74 20 63 6f 6c 6f 72 | 73 20 2a 2f 0a 58 20 20 |ut color|s */.X  |
|000031b0| 69 6e 74 20 4e 63 6f 6c | 6f 72 73 5b 4d 41 58 5f |int Ncol|ors[MAX_|
|000031c0| 43 4f 4d 50 4f 4e 45 4e | 54 53 5d 3b 09 2f 2a 20 |COMPONEN|TS];./* |
|000031d0| 23 20 6f 66 20 76 61 6c | 75 65 73 20 61 6c 6c 6f |# of val|ues allo|
|000031e0| 63 65 64 20 74 6f 20 65 | 61 63 68 20 63 6f 6d 70 |ced to e|ach comp|
|000031f0| 6f 6e 65 6e 74 20 2a 2f | 0a 58 20 20 69 6e 74 20 |onent */|.X  int |
|00003200| 69 2c 6a 2c 6b 2c 20 6e | 63 69 2c 20 62 6c 6b 73 |i,j,k, n|ci, blks|
|00003210| 69 7a 65 2c 20 62 6c 6b | 64 69 73 74 2c 20 70 74 |ize, blk|dist, pt|
|00003220| 72 2c 20 76 61 6c 3b 0a | 58 0a 58 20 20 2f 2a 20 |r, val;.|X.X  /* |
|00003230| 4d 61 6b 65 20 73 75 72 | 65 20 6d 79 20 69 6e 74 |Make sur|e my int|
|00003240| 65 72 6e 61 6c 20 61 72 | 72 61 79 73 20 77 6f 6e |ernal ar|rays won|
|00003250| 27 74 20 6f 76 65 72 66 | 6c 6f 77 20 2a 2f 0a 58 |'t overf|low */.X|
|00003260| 20 20 69 66 20 28 63 69 | 6e 66 6f 2d 3e 6e 75 6d |  if (ci|nfo->num|
|00003270| 5f 63 6f 6d 70 6f 6e 65 | 6e 74 73 20 3e 20 4d 41 |_compone|nts > MA|
|00003280| 58 5f 43 4f 4d 50 4f 4e | 45 4e 54 53 20 7c 7c 0a |X_COMPON|ENTS ||.|
|00003290| 58 20 20 20 20 20 20 63 | 69 6e 66 6f 2d 3e 63 6f |X      c|info->co|
|000032a0| 6c 6f 72 5f 6f 75 74 5f | 63 6f 6d 70 73 20 3e 20 |lor_out_|comps > |
|000032b0| 4d 41 58 5f 43 4f 4d 50 | 4f 4e 45 4e 54 53 29 0a |MAX_COMP|ONENTS).|
|000032c0| 58 20 20 20 20 45 52 52 | 45 58 49 54 31 28 63 69 |X    ERR|EXIT1(ci|
|000032d0| 6e 66 6f 2d 3e 65 6d 65 | 74 68 6f 64 73 2c 20 22 |nfo->eme|thods, "|
|000032e0| 43 61 6e 6e 6f 74 20 71 | 75 61 6e 74 69 7a 65 20 |Cannot q|uantize |
|000032f0| 6d 6f 72 65 20 74 68 61 | 6e 20 25 64 20 63 6f 6c |more tha|n %d col|
|00003300| 6f 72 20 63 6f 6d 70 6f | 6e 65 6e 74 73 22 2c 0a |or compo|nents",.|
|00003310| 58 09 20 20 20 20 20 4d | 41 58 5f 43 4f 4d 50 4f |X.     M|AX_COMPO|
|00003320| 4e 45 4e 54 53 29 3b 0a | 58 20 20 2f 2a 20 4d 61 |NENTS);.|X  /* Ma|
|00003330| 6b 65 20 73 75 72 65 20 | 63 6f 6c 6f 72 6d 61 70 |ke sure |colormap|
|00003340| 20 69 6e 64 65 78 65 73 | 20 63 61 6e 20 62 65 20 | indexes| can be |
|00003350| 72 65 70 72 65 73 65 6e | 74 65 64 20 62 79 20 4a |represen|ted by J|
|00003360| 53 41 4d 50 4c 45 73 20 | 2a 2f 0a 58 20 20 69 66 |SAMPLEs |*/.X  if|
|00003370| 20 28 63 69 6e 66 6f 2d | 3e 64 65 73 69 72 65 64 | (cinfo-|>desired|
|00003380| 5f 6e 75 6d 62 65 72 5f | 6f 66 5f 63 6f 6c 6f 72 |_number_|of_color|
|00003390| 73 20 3e 20 28 4d 41 58 | 4a 53 41 4d 50 4c 45 2b |s > (MAX|JSAMPLE+|
|000033a0| 31 29 29 0a 58 20 20 20 | 20 45 52 52 45 58 49 54 |1)).X   | ERREXIT|
|000033b0| 31 28 63 69 6e 66 6f 2d | 3e 65 6d 65 74 68 6f 64 |1(cinfo-|>emethod|
|000033c0| 73 2c 20 22 43 61 6e 6e | 6f 74 20 72 65 71 75 65 |s, "Cann|ot reque|
|000033d0| 73 74 20 6d 6f 72 65 20 | 74 68 61 6e 20 25 64 20 |st more |than %d |
|000033e0| 71 75 61 6e 74 69 7a 65 | 64 20 63 6f 6c 6f 72 73 |quantize|d colors|
|000033f0| 22 2c 0a 58 09 20 20 20 | 20 20 4d 41 58 4a 53 41 |",.X.   |  MAXJSA|
|00003400| 4d 50 4c 45 2b 31 29 3b | 0a 58 0a 58 20 20 2f 2a |MPLE+1);|.X.X  /*|
|00003410| 20 53 65 6c 65 63 74 20 | 6e 75 6d 62 65 72 20 6f | Select |number o|
|00003420| 66 20 63 6f 6c 6f 72 73 | 20 66 6f 72 20 65 61 63 |f colors| for eac|
|00003430| 68 20 63 6f 6d 70 6f 6e | 65 6e 74 20 2a 2f 0a 58 |h compon|ent */.X|
|00003440| 20 20 74 6f 74 61 6c 5f | 63 6f 6c 6f 72 73 20 3d |  total_|colors =|
|00003450| 20 73 65 6c 65 63 74 5f | 6e 63 6f 6c 6f 72 73 28 | select_|ncolors(|
|00003460| 63 69 6e 66 6f 2c 20 4e | 63 6f 6c 6f 72 73 29 3b |cinfo, N|colors);|
|00003470| 0a 58 0a 58 20 20 2f 2a | 20 52 65 70 6f 72 74 20 |.X.X  /*| Report |
|00003480| 73 65 6c 65 63 74 65 64 | 20 63 6f 6c 6f 72 20 63 |selected| color c|
|00003490| 6f 75 6e 74 73 20 2a 2f | 0a 58 20 20 69 66 20 28 |ounts */|.X  if (|
|000034a0| 63 69 6e 66 6f 2d 3e 63 | 6f 6c 6f 72 5f 6f 75 74 |cinfo->c|olor_out|
|000034b0| 5f 63 6f 6d 70 73 20 3d | 3d 20 33 29 0a 58 20 20 |_comps =|= 3).X  |
|000034c0| 20 20 54 52 41 43 45 4d | 53 34 28 63 69 6e 66 6f |  TRACEM|S4(cinfo|
|000034d0| 2d 3e 65 6d 65 74 68 6f | 64 73 2c 20 31 2c 20 22 |->emetho|ds, 1, "|
|000034e0| 51 75 61 6e 74 69 7a 69 | 6e 67 20 74 6f 20 25 64 |Quantizi|ng to %d|
|000034f0| 20 3d 20 25 64 2a 25 64 | 2a 25 64 20 63 6f 6c 6f | = %d*%d|*%d colo|
|00003500| 72 73 22 2c 0a 58 09 20 | 20 20 20 20 74 6f 74 61 |rs",.X. |    tota|
|00003510| 6c 5f 63 6f 6c 6f 72 73 | 2c 20 4e 63 6f 6c 6f 72 |l_colors|, Ncolor|
|00003520| 73 5b 30 5d 2c 20 4e 63 | 6f 6c 6f 72 73 5b 31 5d |s[0], Nc|olors[1]|
|00003530| 2c 20 4e 63 6f 6c 6f 72 | 73 5b 32 5d 29 3b 0a 58 |, Ncolor|s[2]);.X|
|00003540| 20 20 65 6c 73 65 0a 58 | 20 20 20 20 54 52 41 43 |  else.X|    TRAC|
|00003550| 45 4d 53 31 28 63 69 6e | 66 6f 2d 3e 65 6d 65 74 |EMS1(cin|fo->emet|
|00003560| 68 6f 64 73 2c 20 31 2c | 20 22 51 75 61 6e 74 69 |hods, 1,| "Quanti|
|00003570| 7a 69 6e 67 20 74 6f 20 | 25 64 20 63 6f 6c 6f 72 |zing to |%d color|
|00003580| 73 22 2c 20 74 6f 74 61 | 6c 5f 63 6f 6c 6f 72 73 |s", tota|l_colors|
|00003590| 29 3b 0a 58 0a 58 20 20 | 2f 2a 20 41 6c 6c 6f 63 |);.X.X  |/* Alloc|
|000035a0| 61 74 65 20 61 6e 64 20 | 66 69 6c 6c 20 69 6e 20 |ate and |fill in |
|000035b0| 74 68 65 20 63 6f 6c 6f | 72 6d 61 70 20 61 6e 64 |the colo|rmap and|
|000035c0| 20 63 6f 6c 6f 72 20 69 | 6e 64 65 78 2e 20 2a 2f | color i|ndex. */|
|000035d0| 0a 58 20 20 2f 2a 20 54 | 68 65 20 63 6f 6c 6f 72 |.X  /* T|he color|
|000035e0| 73 20 61 72 65 20 6f 72 | 64 65 72 65 64 20 69 6e |s are or|dered in|
|000035f0| 20 74 68 65 20 6d 61 70 | 20 69 6e 20 73 74 61 6e | the map| in stan|
|00003600| 64 61 72 64 20 72 6f 77 | 2d 6d 61 6a 6f 72 20 6f |dard row|-major o|
|00003610| 72 64 65 72 2c 20 2a 2f | 0a 58 20 20 2f 2a 20 69 |rder, */|.X  /* i|
|00003620| 2e 65 2e 20 72 69 67 68 | 74 6d 6f 73 74 20 28 68 |.e. righ|tmost (h|
|00003630| 69 67 68 65 73 74 2d 69 | 6e 64 65 78 65 64 29 20 |ighest-i|ndexed) |
|00003640| 63 6f 6c 6f 72 20 63 68 | 61 6e 67 65 73 20 6d 6f |color ch|anges mo|
|00003650| 73 74 20 72 61 70 69 64 | 6c 79 2e 20 2a 2f 0a 58 |st rapid|ly. */.X|
|00003660| 0a 58 20 20 63 6f 6c 6f | 72 6d 61 70 20 3d 20 28 |.X  colo|rmap = (|
|00003670| 2a 63 69 6e 66 6f 2d 3e | 65 6d 65 74 68 6f 64 73 |*cinfo->|emethods|
|00003680| 2d 3e 61 6c 6c 6f 63 5f | 73 6d 61 6c 6c 5f 73 61 |->alloc_|small_sa|
|00003690| 72 72 61 79 29 0a 58 09 | 09 28 28 6c 6f 6e 67 29 |rray).X.|.((long)|
|000036a0| 20 74 6f 74 61 6c 5f 63 | 6f 6c 6f 72 73 2c 20 28 | total_c|olors, (|
|000036b0| 6c 6f 6e 67 29 20 63 69 | 6e 66 6f 2d 3e 63 6f 6c |long) ci|nfo->col|
|000036c0| 6f 72 5f 6f 75 74 5f 63 | 6f 6d 70 73 29 3b 0a 58 |or_out_c|omps);.X|
|000036d0| 20 20 63 6f 6c 6f 72 69 | 6e 64 65 78 20 3d 20 28 |  colori|ndex = (|
|000036e0| 2a 63 69 6e 66 6f 2d 3e | 65 6d 65 74 68 6f 64 73 |*cinfo->|emethods|
|000036f0| 2d 3e 61 6c 6c 6f 63 5f | 73 6d 61 6c 6c 5f 73 61 |->alloc_|small_sa|
|00003700| 72 72 61 79 29 0a 58 09 | 09 28 28 6c 6f 6e 67 29 |rray).X.|.((long)|
|00003710| 20 28 4d 41 58 4a 53 41 | 4d 50 4c 45 2b 31 29 2c | (MAXJSA|MPLE+1),|
|00003720| 20 28 6c 6f 6e 67 29 20 | 63 69 6e 66 6f 2d 3e 63 | (long) |cinfo->c|
|00003730| 6f 6c 6f 72 5f 6f 75 74 | 5f 63 6f 6d 70 73 29 3b |olor_out|_comps);|
|00003740| 0a 58 0a 58 20 20 2f 2a | 20 62 6c 6b 73 69 7a 65 |.X.X  /*| blksize|
|00003750| 20 69 73 20 6e 75 6d 62 | 65 72 20 6f 66 20 61 64 | is numb|er of ad|
|00003760| 6a 61 63 65 6e 74 20 72 | 65 70 65 61 74 65 64 20 |jacent r|epeated |
|00003770| 65 6e 74 72 69 65 73 20 | 66 6f 72 20 61 20 63 6f |entries |for a co|
|00003780| 6d 70 6f 6e 65 6e 74 20 | 2a 2f 0a 58 20 20 2f 2a |mponent |*/.X  /*|
|00003790| 20 62 6c 6b 64 69 73 74 | 20 69 73 20 64 69 73 74 | blkdist| is dist|
|000037a0| 61 6e 63 65 20 62 65 74 | 77 65 65 6e 20 67 72 6f |ance bet|ween gro|
|000037b0| 75 70 73 20 6f 66 20 69 | 64 65 6e 74 69 63 61 6c |ups of i|dentical|
|000037c0| 20 65 6e 74 72 69 65 73 | 20 66 6f 72 20 61 20 63 | entries| for a c|
|000037d0| 6f 6d 70 6f 6e 65 6e 74 | 20 2a 2f 0a 58 20 20 62 |omponent| */.X  b|
|000037e0| 6c 6b 64 69 73 74 20 3d | 20 74 6f 74 61 6c 5f 63 |lkdist =| total_c|
|000037f0| 6f 6c 6f 72 73 3b 0a 58 | 0a 58 20 20 66 6f 72 20 |olors;.X|.X  for |
|00003800| 28 69 20 3d 20 30 3b 20 | 69 20 3c 20 63 69 6e 66 |(i = 0; |i < cinf|
|00003810| 6f 2d 3e 63 6f 6c 6f 72 | 5f 6f 75 74 5f 63 6f 6d |o->color|_out_com|
|00003820| 70 73 3b 20 69 2b 2b 29 | 20 7b 0a 58 20 20 20 20 |ps; i++)| {.X    |
|00003830| 2f 2a 20 66 69 6c 6c 20 | 69 6e 20 63 6f 6c 6f 72 |/* fill |in color|
|00003840| 6d 61 70 20 65 6e 74 72 | 69 65 73 20 66 6f 72 20 |map entr|ies for |
|00003850| 69 27 74 68 20 63 6f 6c | 6f 72 20 63 6f 6d 70 6f |i'th col|or compo|
|00003860| 6e 65 6e 74 20 2a 2f 0a | 58 20 20 20 20 6e 63 69 |nent */.|X    nci|
|00003870| 20 3d 20 4e 63 6f 6c 6f | 72 73 5b 69 5d 3b 09 09 | = Ncolo|rs[i];..|
|00003880| 2f 2a 20 23 20 6f 66 20 | 64 69 73 74 69 6e 63 74 |/* # of |distinct|
|00003890| 20 76 61 6c 75 65 73 20 | 66 6f 72 20 74 68 69 73 | values |for this|
|000038a0| 20 63 6f 6c 6f 72 20 2a | 2f 0a 58 20 20 20 20 62 | color *|/.X    b|
|000038b0| 6c 6b 73 69 7a 65 20 3d | 20 62 6c 6b 64 69 73 74 |lksize =| blkdist|
|000038c0| 20 2f 20 6e 63 69 3b 0a | 58 20 20 20 20 66 6f 72 | / nci;.|X    for|
|000038d0| 20 28 6a 20 3d 20 30 3b | 20 6a 20 3c 20 6e 63 69 | (j = 0;| j < nci|
|000038e0| 3b 20 6a 2b 2b 29 20 7b | 0a 58 20 20 20 20 20 20 |; j++) {|.X      |
|000038f0| 2f 2a 20 43 6f 6d 70 75 | 74 65 20 6a 27 74 68 20 |/* Compu|te j'th |
|00003900| 6f 75 74 70 75 74 20 76 | 61 6c 75 65 20 28 6f 75 |output v|alue (ou|
|00003910| 74 20 6f 66 20 6e 63 69 | 29 20 66 6f 72 20 63 6f |t of nci|) for co|
|00003920| 6d 70 6f 6e 65 6e 74 20 | 2a 2f 0a 58 20 20 20 20 |mponent |*/.X    |
|00003930| 20 20 76 61 6c 20 3d 20 | 6f 75 74 70 75 74 5f 76 |  val = |output_v|
|00003940| 61 6c 75 65 28 63 69 6e | 66 6f 2c 20 69 2c 20 6a |alue(cin|fo, i, j|
|00003950| 2c 20 6e 63 69 2d 31 29 | 3b 0a 58 20 20 20 20 20 |, nci-1)|;.X     |
|00003960| 20 2f 2a 20 46 69 6c 6c | 20 69 6e 20 61 6c 6c 20 | /* Fill| in all |
|00003970| 63 6f 6c 6f 72 6d 61 70 | 20 65 6e 74 72 69 65 73 |colormap| entries|
|00003980| 20 74 68 61 74 20 68 61 | 76 65 20 74 68 69 73 20 | that ha|ve this |
|00003990| 76 61 6c 75 65 20 6f 66 | 20 74 68 69 73 20 63 6f |value of| this co|
|000039a0| 6d 70 6f 6e 65 6e 74 20 | 2a 2f 0a 58 20 20 20 20 |mponent |*/.X    |
|000039b0| 20 20 66 6f 72 20 28 70 | 74 72 20 3d 20 6a 20 2a |  for (p|tr = j *|
|000039c0| 20 62 6c 6b 73 69 7a 65 | 3b 20 70 74 72 20 3c 20 | blksize|; ptr < |
|000039d0| 74 6f 74 61 6c 5f 63 6f | 6c 6f 72 73 3b 20 70 74 |total_co|lors; pt|
|000039e0| 72 20 2b 3d 20 62 6c 6b | 64 69 73 74 29 20 7b 0a |r += blk|dist) {.|
|000039f0| 58 09 2f 2a 20 66 69 6c | 6c 20 69 6e 20 62 6c 6b |X./* fil|l in blk|
|00003a00| 73 69 7a 65 20 65 6e 74 | 72 69 65 73 20 62 65 67 |size ent|ries beg|
|00003a10| 69 6e 6e 69 6e 67 20 61 | 74 20 70 74 72 20 2a 2f |inning a|t ptr */|
|00003a20| 0a 58 09 66 6f 72 20 28 | 6b 20 3d 20 30 3b 20 6b |.X.for (|k = 0; k|
|00003a30| 20 3c 20 62 6c 6b 73 69 | 7a 65 3b 20 6b 2b 2b 29 | < blksi|ze; k++)|
|00003a40| 0a 58 09 20 20 63 6f 6c | 6f 72 6d 61 70 5b 69 5d |.X.  col|ormap[i]|
|00003a50| 5b 70 74 72 2b 6b 5d 20 | 3d 20 28 4a 53 41 4d 50 |[ptr+k] |= (JSAMP|
|00003a60| 4c 45 29 20 76 61 6c 3b | 0a 58 20 20 20 20 20 20 |LE) val;|.X      |
|00003a70| 7d 0a 58 20 20 20 20 7d | 0a 58 20 20 20 20 62 6c |}.X    }|.X    bl|
|00003a80| 6b 64 69 73 74 20 3d 20 | 62 6c 6b 73 69 7a 65 3b |kdist = |blksize;|
|00003a90| 09 09 2f 2a 20 62 6c 6b | 73 69 7a 65 20 6f 66 20 |../* blk|size of |
|00003aa0| 74 68 69 73 20 63 6f 6c | 6f 72 20 69 73 20 62 6c |this col|or is bl|
|00003ab0| 6b 64 69 73 74 20 6f 66 | 20 6e 65 78 74 20 2a 2f |kdist of| next */|
|00003ac0| 0a 58 0a 58 20 20 20 20 | 2f 2a 20 66 69 6c 6c 20 |.X.X    |/* fill |
|00003ad0| 69 6e 20 63 6f 6c 6f 72 | 69 6e 64 65 78 20 65 6e |in color|index en|
|00003ae0| 74 72 69 65 73 20 66 6f | 72 20 69 27 74 68 20 63 |tries fo|r i'th c|
|00003af0| 6f 6c 6f 72 20 63 6f 6d | 70 6f 6e 65 6e 74 20 2a |olor com|ponent *|
|00003b00| 2f 0a 58 20 20 20 20 2f | 2a 20 69 6e 20 6c 6f 6f |/.X    /|* in loo|
|00003b10| 70 2c 20 76 61 6c 20 3d | 20 69 6e 64 65 78 20 6f |p, val =| index o|
|00003b20| 66 20 63 75 72 72 65 6e | 74 20 6f 75 74 70 75 74 |f curren|t output|
|00003b30| 20 76 61 6c 75 65 2c 20 | 2a 2f 0a 58 20 20 20 20 | value, |*/.X    |
|00003b40| 2f 2a 20 61 6e 64 20 6b | 20 3d 20 6c 61 72 67 65 |/* and k| = large|
|00003b50| 73 74 20 6a 20 74 68 61 | 74 20 6d 61 70 73 20 74 |st j tha|t maps t|
|00003b60| 6f 20 63 75 72 72 65 6e | 74 20 76 61 6c 20 2a 2f |o curren|t val */|
|00003b70| 0a 58 20 20 20 20 76 61 | 6c 20 3d 20 30 3b 0a 58 |.X    va|l = 0;.X|
|00003b80| 20 20 20 20 6b 20 3d 20 | 6c 61 72 67 65 73 74 5f |    k = |largest_|
|00003b90| 69 6e 70 75 74 5f 76 61 | 6c 75 65 28 63 69 6e 66 |input_va|lue(cinf|
|00003ba0| 6f 2c 20 69 2c 20 30 2c | 20 6e 63 69 2d 31 29 3b |o, i, 0,| nci-1);|
|00003bb0| 0a 58 20 20 20 20 66 6f | 72 20 28 6a 20 3d 20 30 |.X    fo|r (j = 0|
|00003bc0| 3b 20 6a 20 3c 3d 20 4d | 41 58 4a 53 41 4d 50 4c |; j <= M|AXJSAMPL|
|00003bd0| 45 3b 20 6a 2b 2b 29 20 | 7b 0a 58 20 20 20 20 20 |E; j++) |{.X     |
|00003be0| 20 77 68 69 6c 65 20 28 | 6a 20 3e 20 6b 29 09 09 | while (|j > k)..|
|00003bf0| 2f 2a 20 61 64 76 61 6e | 63 65 20 76 61 6c 20 69 |/* advan|ce val i|
|00003c00| 66 20 70 61 73 74 20 62 | 6f 75 6e 64 61 72 79 20 |f past b|oundary |
|00003c10| 2a 2f 0a 58 09 6b 20 3d | 20 6c 61 72 67 65 73 74 |*/.X.k =| largest|
|00003c20| 5f 69 6e 70 75 74 5f 76 | 61 6c 75 65 28 63 69 6e |_input_v|alue(cin|
|00003c30| 66 6f 2c 20 69 2c 20 2b | 2b 76 61 6c 2c 20 6e 63 |fo, i, +|+val, nc|
|00003c40| 69 2d 31 29 3b 0a 58 20 | 20 20 20 20 20 2f 2a 20 |i-1);.X |     /* |
|00003c50| 70 72 65 6d 75 6c 74 69 | 70 6c 79 20 73 6f 20 74 |premulti|ply so t|
|00003c60| 68 61 74 20 6e 6f 20 6d | 75 6c 74 69 70 6c 69 63 |hat no m|ultiplic|
|00003c70| 61 74 69 6f 6e 20 6e 65 | 65 64 65 64 20 69 6e 20 |ation ne|eded in |
|00003c80| 6d 61 69 6e 20 70 72 6f | 63 65 73 73 69 6e 67 20 |main pro|cessing |
|00003c90| 2a 2f 0a 58 20 20 20 20 | 20 20 63 6f 6c 6f 72 69 |*/.X    |  colori|
|00003ca0| 6e 64 65 78 5b 69 5d 5b | 6a 5d 20 3d 20 28 4a 53 |ndex[i][|j] = (JS|
|00003cb0| 41 4d 50 4c 45 29 20 28 | 76 61 6c 20 2a 20 62 6c |AMPLE) (|val * bl|
|00003cc0| 6b 73 69 7a 65 29 3b 0a | 58 20 20 20 20 7d 0a 58 |ksize);.|X    }.X|
|00003cd0| 20 20 7d 0a 58 0a 58 20 | 20 2f 2a 20 50 61 73 73 |  }.X.X | /* Pass|
|00003ce0| 20 74 68 65 20 63 6f 6c | 6f 72 6d 61 70 20 74 6f | the col|ormap to|
|00003cf0| 20 74 68 65 20 6f 75 74 | 70 75 74 20 6d 6f 64 75 | the out|put modu|
|00003d00| 6c 65 2e 20 2a 2f 0a 58 | 20 20 2f 2a 20 4e 42 3a |le. */.X|  /* NB:|
|00003d10| 20 74 68 65 20 6f 75 74 | 70 75 74 20 6d 6f 64 75 | the out|put modu|
|00003d20| 6c 65 20 6d 61 79 20 63 | 6f 6e 74 69 6e 75 65 20 |le may c|ontinue |
|00003d30| 74 6f 20 75 73 65 20 74 | 68 65 20 63 6f 6c 6f 72 |to use t|he color|
|00003d40| 6d 61 70 20 75 6e 74 69 | 6c 20 73 68 75 74 64 6f |map unti|l shutdo|
|00003d50| 77 6e 2e 20 2a 2f 0a 58 | 20 20 63 69 6e 66 6f 2d |wn. */.X|  cinfo-|
|00003d60| 3e 63 6f 6c 6f 72 6d 61 | 70 20 3d 20 63 6f 6c 6f |>colorma|p = colo|
|00003d70| 72 6d 61 70 3b 0a 58 20 | 20 63 69 6e 66 6f 2d 3e |rmap;.X | cinfo->|
|00003d80| 61 63 74 75 61 6c 5f 6e | 75 6d 62 65 72 5f 6f 66 |actual_n|umber_of|
|00003d90| 5f 63 6f 6c 6f 72 73 20 | 3d 20 74 6f 74 61 6c 5f |_colors |= total_|
|00003da0| 63 6f 6c 6f 72 73 3b 0a | 58 20 20 28 2a 63 69 6e |colors;.|X  (*cin|
|00003db0| 66 6f 2d 3e 6d 65 74 68 | 6f 64 73 2d 3e 70 75 74 |fo->meth|ods->put|
|00003dc0| 5f 63 6f 6c 6f 72 5f 6d | 61 70 29 20 28 63 69 6e |_color_m|ap) (cin|
|00003dd0| 66 6f 2c 20 74 6f 74 61 | 6c 5f 63 6f 6c 6f 72 73 |fo, tota|l_colors|
|00003de0| 2c 20 63 6f 6c 6f 72 6d | 61 70 29 3b 0a 58 0a 58 |, colorm|ap);.X.X|
|00003df0| 20 20 2f 2a 20 41 6c 6c | 6f 63 61 74 65 20 77 6f |  /* All|ocate wo|
|00003e00| 72 6b 73 70 61 63 65 20 | 74 6f 20 68 6f 6c 64 20 |rkspace |to hold |
|00003e10| 6f 6e 65 20 72 6f 77 20 | 6f 66 20 63 6f 6c 6f 72 |one row |of color|
|00003e20| 2d 63 6f 6e 76 65 72 74 | 65 64 20 64 61 74 61 20 |-convert|ed data |
|00003e30| 2a 2f 0a 58 20 20 69 6e | 70 75 74 5f 62 75 66 66 |*/.X  in|put_buff|
|00003e40| 65 72 20 3d 20 28 2a 63 | 69 6e 66 6f 2d 3e 65 6d |er = (*c|info->em|
|00003e50| 65 74 68 6f 64 73 2d 3e | 61 6c 6c 6f 63 5f 73 6d |ethods->|alloc_sm|
|00003e60| 61 6c 6c 5f 73 61 72 72 | 61 79 29 0a 58 09 09 09 |all_sarr|ay).X...|
|00003e70| 28 63 69 6e 66 6f 2d 3e | 69 6d 61 67 65 5f 77 69 |(cinfo->|image_wi|
|00003e80| 64 74 68 2c 20 28 6c 6f | 6e 67 29 20 63 69 6e 66 |dth, (lo|ng) cinf|
|00003e90| 6f 2d 3e 63 6f 6c 6f 72 | 5f 6f 75 74 5f 63 6f 6d |o->color|_out_com|
|00003ea0| 70 73 29 3b 0a 58 0a 58 | 20 20 2f 2a 20 41 6c 6c |ps);.X.X|  /* All|
|00003eb0| 6f 63 61 74 65 20 46 6c | 6f 79 64 2d 53 74 65 69 |ocate Fl|oyd-Stei|
|00003ec0| 6e 62 65 72 67 20 77 6f | 72 6b 73 70 61 63 65 20 |nberg wo|rkspace |
|00003ed0| 69 66 20 6e 65 63 65 73 | 73 61 72 79 20 2a 2f 0a |if neces|sary */.|
|00003ee0| 58 20 20 69 66 20 28 63 | 69 6e 66 6f 2d 3e 75 73 |X  if (c|info->us|
|00003ef0| 65 5f 64 69 74 68 65 72 | 69 6e 67 29 20 7b 0a 58 |e_dither|ing) {.X|
|00003f00| 20 20 20 20 73 69 7a 65 | 5f 74 20 61 72 72 61 79 |    size|_t array|
|00003f10| 73 69 7a 65 20 3d 20 28 | 73 69 7a 65 5f 74 29 20 |size = (|size_t) |
|00003f20| 28 28 63 69 6e 66 6f 2d | 3e 69 6d 61 67 65 5f 77 |((cinfo-|>image_w|
|00003f30| 69 64 74 68 20 2b 20 32 | 4c 29 20 2a 20 53 49 5a |idth + 2|L) * SIZ|
|00003f40| 45 4f 46 28 46 53 45 52 | 52 4f 52 29 29 3b 0a 58 |EOF(FSER|ROR));.X|
|00003f50| 0a 58 20 20 20 20 66 6f | 72 20 28 69 20 3d 20 30 |.X    fo|r (i = 0|
|00003f60| 3b 20 69 20 3c 20 63 69 | 6e 66 6f 2d 3e 63 6f 6c |; i < ci|nfo->col|
|00003f70| 6f 72 5f 6f 75 74 5f 63 | 6f 6d 70 73 3b 20 69 2b |or_out_c|omps; i+|
|00003f80| 2b 29 20 7b 0a 58 20 20 | 20 20 20 20 65 76 65 6e |+) {.X  |    even|
|00003f90| 72 6f 77 65 72 72 73 5b | 69 5d 20 3d 20 28 46 53 |rowerrs[|i] = (FS|
|00003fa0| 45 52 52 50 54 52 29 20 | 28 2a 63 69 6e 66 6f 2d |ERRPTR) |(*cinfo-|
|00003fb0| 3e 65 6d 65 74 68 6f 64 | 73 2d 3e 61 6c 6c 6f 63 |>emethod|s->alloc|
|00003fc0| 5f 6d 65 64 69 75 6d 29 | 20 28 61 72 72 61 79 73 |_medium)| (arrays|
|00003fd0| 69 7a 65 29 3b 0a 58 20 | 20 20 20 20 20 6f 64 64 |ize);.X |     odd|
|00003fe0| 72 6f 77 65 72 72 73 5b | 69 5d 20 20 3d 20 28 46 |rowerrs[|i]  = (F|
|00003ff0| 53 45 52 52 50 54 52 29 | 20 28 2a 63 69 6e 66 6f |SERRPTR)| (*cinfo|
|00004000| 2d 3e 65 6d 65 74 68 6f | 64 73 2d 3e 61 6c 6c 6f |->emetho|ds->allo|
|00004010| 63 5f 6d 65 64 69 75 6d | 29 20 28 61 72 72 61 79 |c_medium|) (array|
|00004020| 73 69 7a 65 29 3b 0a 58 | 20 20 20 20 20 20 2f 2a |size);.X|      /*|
|00004030| 20 77 65 20 6f 6e 6c 79 | 20 6e 65 65 64 20 74 6f | we only| need to|
|00004040| 20 7a 65 72 6f 20 74 68 | 65 20 66 6f 72 77 61 72 | zero th|e forwar|
|00004050| 64 20 63 6f 6e 74 72 69 | 62 75 74 69 6f 6e 20 66 |d contri|bution f|
|00004060| 6f 72 20 63 75 72 72 65 | 6e 74 20 72 6f 77 2e 20 |or curre|nt row. |
|00004070| 2a 2f 0a 58 20 20 20 20 | 20 20 6a 7a 65 72 6f 5f |*/.X    |  jzero_|
|00004080| 66 61 72 28 28 76 6f 69 | 64 20 46 41 52 20 2a 29 |far((voi|d FAR *)|
|00004090| 20 65 76 65 6e 72 6f 77 | 65 72 72 73 5b 69 5d 2c | evenrow|errs[i],|
|000040a0| 20 61 72 72 61 79 73 69 | 7a 65 29 3b 0a 58 20 20 | arraysi|ze);.X  |
|000040b0| 20 20 7d 0a 58 20 20 20 | 20 6f 6e 5f 6f 64 64 5f |  }.X   | on_odd_|
|000040c0| 72 6f 77 20 3d 20 46 41 | 4c 53 45 3b 0a 58 20 20 |row = FA|LSE;.X  |
|000040d0| 7d 0a 58 7d 0a 58 0a 58 | 0a 58 2f 2a 0a 58 20 2a |}.X}.X.X|.X/*.X *|
|000040e0| 20 53 75 62 72 6f 75 74 | 69 6e 65 73 20 66 6f 72 | Subrout|ines for|
|000040f0| 20 63 6f 6c 6f 72 20 63 | 6f 6e 76 65 72 73 69 6f | color c|onversio|
|00004100| 6e 20 6d 65 74 68 6f 64 | 73 2e 0a 58 20 2a 2f 0a |n method|s..X */.|
|00004110| 58 0a 58 4c 4f 43 41 4c | 20 76 6f 69 64 0a 58 64 |X.XLOCAL| void.Xd|
|00004120| 6f 5f 63 6f 6c 6f 72 5f | 63 6f 6e 76 65 72 73 69 |o_color_|conversi|
|00004130| 6f 6e 20 28 64 65 63 6f | 6d 70 72 65 73 73 5f 69 |on (deco|mpress_i|
|00004140| 6e 66 6f 5f 70 74 72 20 | 63 69 6e 66 6f 2c 20 4a |nfo_ptr |cinfo, J|
|00004150| 53 41 4d 50 49 4d 41 47 | 45 20 69 6e 70 75 74 5f |SAMPIMAG|E input_|
|00004160| 64 61 74 61 2c 20 69 6e | 74 20 72 6f 77 29 0a 58 |data, in|t row).X|
|00004170| 2f 2a 20 43 6f 6e 76 65 | 72 74 20 74 68 65 20 69 |/* Conve|rt the i|
|00004180| 6e 64 69 63 61 74 65 64 | 20 72 6f 77 20 6f 66 20 |ndicated| row of |
|00004190| 74 68 65 20 69 6e 70 75 | 74 20 64 61 74 61 20 69 |the inpu|t data i|
|000041a0| 6e 74 6f 20 6f 75 74 70 | 75 74 20 63 6f 6c 6f 72 |nto outp|ut color|
|000041b0| 73 70 61 63 65 20 2a 2f | 0a 58 2f 2a 20 69 6e 20 |space */|.X/* in |
|000041c0| 69 6e 70 75 74 5f 62 75 | 66 66 65 72 2e 20 20 54 |input_bu|ffer.  T|
|000041d0| 68 69 73 20 72 65 71 75 | 69 72 65 73 20 61 20 6c |his requ|ires a l|
|000041e0| 69 74 74 6c 65 20 74 72 | 69 63 6b 65 72 79 20 73 |ittle tr|ickery s|
|000041f0| 69 6e 63 65 20 63 6f 6c | 6f 72 5f 63 6f 6e 76 65 |ince col|or_conve|
|00004200| 72 74 20 2a 2f 0a 58 2f | 2a 20 65 78 70 65 63 74 |rt */.X/|* expect|
|00004210| 73 20 74 6f 20 64 65 61 | 6c 20 77 69 74 68 20 33 |s to dea|l with 3|
|00004220| 2d 44 20 61 72 72 61 79 | 73 3b 20 66 6f 72 74 75 |-D array|s; fortu|
|00004230| 6e 61 74 65 6c 79 20 77 | 65 20 63 61 6e 20 66 61 |nately w|e can fa|
|00004240| 6b 65 20 69 74 20 6f 75 | 74 20 2a 2f 0a 58 2f 2a |ke it ou|t */.X/*|
|00004250| 20 61 74 20 66 61 69 72 | 6c 79 20 6c 6f 77 20 63 | at fair|ly low c|
|00004260| 6f 73 74 2e 20 2a 2f 0a | 58 7b 0a 58 20 20 73 68 |ost. */.|X{.X  sh|
|00004270| 6f 72 74 20 63 69 3b 0a | 58 20 20 4a 53 41 4d 50 |ort ci;.|X  JSAMP|
|00004280| 41 52 52 41 59 20 69 6e | 70 75 74 5f 68 61 63 6b |ARRAY in|put_hack|
|00004290| 5b 4d 41 58 5f 43 4f 4d | 50 4f 4e 45 4e 54 53 5d |[MAX_COM|PONENTS]|
|000042a0| 3b 0a 58 20 20 4a 53 41 | 4d 50 41 52 52 41 59 20 |;.X  JSA|MPARRAY |
|000042b0| 6f 75 74 70 75 74 5f 68 | 61 63 6b 5b 4d 41 58 5f |output_h|ack[MAX_|
|000042c0| 43 4f 4d 50 4f 4e 45 4e | 54 53 5d 3b 0a 58 0a 58 |COMPONEN|TS];.X.X|
|000042d0| 20 20 2f 2a 20 63 72 65 | 61 74 65 20 4a 53 41 4d |  /* cre|ate JSAM|
|000042e0| 50 49 4d 41 47 45 20 70 | 6f 69 6e 74 69 6e 67 20 |PIMAGE p|ointing |
|000042f0| 61 74 20 73 70 65 63 69 | 66 69 65 64 20 72 6f 77 |at speci|fied row|
|00004300| 20 6f 66 20 69 6e 70 75 | 74 5f 64 61 74 61 20 2a | of inpu|t_data *|
|00004310| 2f 0a 58 20 20 66 6f 72 | 20 28 63 69 20 3d 20 30 |/.X  for| (ci = 0|
|00004320| 3b 20 63 69 20 3c 20 63 | 69 6e 66 6f 2d 3e 6e 75 |; ci < c|info->nu|
|00004330| 6d 5f 63 6f 6d 70 6f 6e | 65 6e 74 73 3b 20 63 69 |m_compon|ents; ci|
|00004340| 2b 2b 29 0a 58 20 20 20 | 20 69 6e 70 75 74 5f 68 |++).X   | input_h|
|00004350| 61 63 6b 5b 63 69 5d 20 | 3d 20 69 6e 70 75 74 5f |ack[ci] |= input_|
|00004360| 64 61 74 61 5b 63 69 5d | 20 2b 20 72 6f 77 3b 0a |data[ci]| + row;.|
|00004370| 58 20 20 2f 2a 20 43 72 | 65 61 74 65 20 4a 53 41 |X  /* Cr|eate JSA|
|00004380| 4d 50 49 4d 41 47 45 20 | 70 6f 69 6e 74 69 6e 67 |MPIMAGE |pointing|
|00004390| 20 61 74 20 69 6e 70 75 | 74 5f 62 75 66 66 65 72 | at inpu|t_buffer|
|000043a0| 20 2a 2f 0a 58 20 20 66 | 6f 72 20 28 63 69 20 3d | */.X  f|or (ci =|
|000043b0| 20 30 3b 20 63 69 20 3c | 20 63 69 6e 66 6f 2d 3e | 0; ci <| cinfo->|
|000043c0| 63 6f 6c 6f 72 5f 6f 75 | 74 5f 63 6f 6d 70 73 3b |color_ou|t_comps;|
|000043d0| 20 63 69 2b 2b 29 0a 58 | 20 20 20 20 6f 75 74 70 | ci++).X|    outp|
|000043e0| 75 74 5f 68 61 63 6b 5b | 63 69 5d 20 3d 20 26 28 |ut_hack[|ci] = &(|
|000043f0| 69 6e 70 75 74 5f 62 75 | 66 66 65 72 5b 63 69 5d |input_bu|ffer[ci]|
|00004400| 29 3b 0a 58 0a 58 20 20 | 28 2a 63 69 6e 66 6f 2d |);.X.X  |(*cinfo-|
|00004410| 3e 6d 65 74 68 6f 64 73 | 2d 3e 63 6f 6c 6f 72 5f |>methods|->color_|
|00004420| 63 6f 6e 76 65 72 74 29 | 20 28 63 69 6e 66 6f 2c |convert)| (cinfo,|
|00004430| 20 31 2c 20 63 69 6e 66 | 6f 2d 3e 69 6d 61 67 65 | 1, cinf|o->image|
|00004440| 5f 77 69 64 74 68 2c 0a | 58 09 09 09 09 20 20 20 |_width,.|X....   |
|00004450| 20 69 6e 70 75 74 5f 68 | 61 63 6b 2c 20 6f 75 74 | input_h|ack, out|
|00004460| 70 75 74 5f 68 61 63 6b | 29 3b 0a 58 7d 0a 58 0a |put_hack|);.X}.X.|
|00004470| 58 0a 58 2f 2a 0a 58 20 | 2a 20 4d 61 70 20 73 6f |X.X/*.X |* Map so|
|00004480| 6d 65 20 72 6f 77 73 20 | 6f 66 20 70 69 78 65 6c |me rows |of pixel|
|00004490| 73 20 74 6f 20 74 68 65 | 20 6f 75 74 70 75 74 20 |s to the| output |
|000044a0| 63 6f 6c 6f 72 6d 61 70 | 70 65 64 20 72 65 70 72 |colormap|ped repr|
|000044b0| 65 73 65 6e 74 61 74 69 | 6f 6e 2e 0a 58 20 2a 2f |esentati|on..X */|
|000044c0| 0a 58 0a 58 4d 45 54 48 | 4f 44 44 45 46 20 76 6f |.X.XMETH|ODDEF vo|
|000044d0| 69 64 0a 58 63 6f 6c 6f | 72 5f 71 75 61 6e 74 69 |id.Xcolo|r_quanti|
|000044e0| 7a 65 20 28 64 65 63 6f | 6d 70 72 65 73 73 5f 69 |ze (deco|mpress_i|
|000044f0| 6e 66 6f 5f 70 74 72 20 | 63 69 6e 66 6f 2c 20 69 |nfo_ptr |cinfo, i|
|00004500| 6e 74 20 6e 75 6d 5f 72 | 6f 77 73 2c 0a 58 09 09 |nt num_r|ows,.X..|
|00004510| 4a 53 41 4d 50 49 4d 41 | 47 45 20 69 6e 70 75 74 |JSAMPIMA|GE input|
|00004520| 5f 64 61 74 61 2c 20 4a | 53 41 4d 50 41 52 52 41 |_data, J|SAMPARRA|
|00004530| 59 20 6f 75 74 70 75 74 | 5f 64 61 74 61 29 0a 58 |Y output|_data).X|
|00004540| 2f 2a 20 47 65 6e 65 72 | 61 6c 20 63 61 73 65 2c |/* Gener|al case,|
|00004550| 20 6e 6f 20 64 69 74 68 | 65 72 69 6e 67 20 2a 2f | no dith|ering */|
|00004560| 0a 58 7b 0a 58 20 20 72 | 65 67 69 73 74 65 72 20 |.X{.X  r|egister |
|00004570| 69 6e 74 20 70 69 78 63 | 6f 64 65 2c 20 63 69 3b |int pixc|ode, ci;|
|00004580| 0a 58 20 20 72 65 67 69 | 73 74 65 72 20 4a 53 41 |.X  regi|ster JSA|
|00004590| 4d 50 52 4f 57 20 70 74 | 72 6f 75 74 3b 0a 58 20 |MPROW pt|rout;.X |
|000045a0| 20 72 65 67 69 73 74 65 | 72 20 6c 6f 6e 67 20 63 | registe|r long c|
|000045b0| 6f 6c 3b 0a 58 20 20 69 | 6e 74 20 72 6f 77 3b 0a |ol;.X  i|nt row;.|
|000045c0| 58 20 20 6c 6f 6e 67 20 | 77 69 64 74 68 20 3d 20 |X  long |width = |
|000045d0| 63 69 6e 66 6f 2d 3e 69 | 6d 61 67 65 5f 77 69 64 |cinfo->i|mage_wid|
|000045e0| 74 68 3b 0a 58 20 20 72 | 65 67 69 73 74 65 72 20 |th;.X  r|egister |
|000045f0| 69 6e 74 20 6e 63 20 3d | 20 63 69 6e 66 6f 2d 3e |int nc =| cinfo->|
|00004600| 63 6f 6c 6f 72 5f 6f 75 | 74 5f 63 6f 6d 70 73 3b |color_ou|t_comps;|
|00004610| 20 20 0a 58 0a 58 20 20 | 66 6f 72 20 28 72 6f 77 |  .X.X  |for (row|
|00004620| 20 3d 20 30 3b 20 72 6f | 77 20 3c 20 6e 75 6d 5f | = 0; ro|w < num_|
|00004630| 72 6f 77 73 3b 20 72 6f | 77 2b 2b 29 20 7b 0a 58 |rows; ro|w++) {.X|
|00004640| 20 20 20 20 64 6f 5f 63 | 6f 6c 6f 72 5f 63 6f 6e |    do_c|olor_con|
|00004650| 76 65 72 73 69 6f 6e 28 | 63 69 6e 66 6f 2c 20 69 |version(|cinfo, i|
|00004660| 6e 70 75 74 5f 64 61 74 | 61 2c 20 72 6f 77 29 3b |nput_dat|a, row);|
|00004670| 0a 58 20 20 20 20 70 74 | 72 6f 75 74 20 3d 20 6f |.X    pt|rout = o|
|00004680| 75 74 70 75 74 5f 64 61 | 74 61 5b 72 6f 77 5d 3b |utput_da|ta[row];|
|00004690| 0a 58 20 20 20 20 66 6f | 72 20 28 63 6f 6c 20 3d |.X    fo|r (col =|
|000046a0| 20 30 3b 20 63 6f 6c 20 | 3c 20 77 69 64 74 68 3b | 0; col |< width;|
|000046b0| 20 63 6f 6c 2b 2b 29 20 | 7b 0a 58 20 20 20 20 20 | col++) |{.X     |
|000046c0| 20 70 69 78 63 6f 64 65 | 20 3d 20 30 3b 0a 58 20 | pixcode| = 0;.X |
|000046d0| 20 20 20 20 20 66 6f 72 | 20 28 63 69 20 3d 20 30 |     for| (ci = 0|
|000046e0| 3b 20 63 69 20 3c 20 6e | 63 3b 20 63 69 2b 2b 29 |; ci < n|c; ci++)|
|000046f0| 20 7b 0a 58 09 70 69 78 | 63 6f 64 65 20 2b 3d 20 | {.X.pix|code += |
|00004700| 47 45 54 4a 53 41 4d 50 | 4c 45 28 63 6f 6c 6f 72 |GETJSAMP|LE(color|
|00004710| 69 6e 64 65 78 5b 63 69 | 5d 0a 58 09 09 09 20 20 |index[ci|].X...  |
|00004720| 20 20 20 20 5b 47 45 54 | 4a 53 41 4d 50 4c 45 28 |    [GET|JSAMPLE(|
|00004730| 69 6e 70 75 74 5f 62 75 | 66 66 65 72 5b 63 69 5d |input_bu|ffer[ci]|
|00004740| 5b 63 6f 6c 5d 29 5d 29 | 3b 0a 58 20 20 20 20 20 |[col])])|;.X     |
|00004750| 20 7d 0a 58 20 20 20 20 | 20 20 2a 70 74 72 6f 75 | }.X    |  *ptrou|
|00004760| 74 2b 2b 20 3d 20 28 4a | 53 41 4d 50 4c 45 29 20 |t++ = (J|SAMPLE) |
|00004770| 70 69 78 63 6f 64 65 3b | 0a 58 20 20 20 20 7d 0a |pixcode;|.X    }.|
|00004780| 58 20 20 7d 0a 58 7d 0a | 58 0a 58 0a 58 4d 45 54 |X  }.X}.|X.X.XMET|
|00004790| 48 4f 44 44 45 46 20 76 | 6f 69 64 0a 58 63 6f 6c |HODDEF v|oid.Xcol|
|000047a0| 6f 72 5f 71 75 61 6e 74 | 69 7a 65 33 20 28 64 65 |or_quant|ize3 (de|
|000047b0| 63 6f 6d 70 72 65 73 73 | 5f 69 6e 66 6f 5f 70 74 |compress|_info_pt|
|000047c0| 72 20 63 69 6e 66 6f 2c | 20 69 6e 74 20 6e 75 6d |r cinfo,| int num|
|000047d0| 5f 72 6f 77 73 2c 0a 58 | 09 09 20 4a 53 41 4d 50 |_rows,.X|.. JSAMP|
|000047e0| 49 4d 41 47 45 20 69 6e | 70 75 74 5f 64 61 74 61 |IMAGE in|put_data|
|000047f0| 2c 20 4a 53 41 4d 50 41 | 52 52 41 59 20 6f 75 74 |, JSAMPA|RRAY out|
|00004800| 70 75 74 5f 64 61 74 61 | 29 0a 58 2f 2a 20 46 61 |put_data|).X/* Fa|
|00004810| 73 74 20 70 61 74 68 20 | 66 6f 72 20 63 6f 6c 6f |st path |for colo|
|00004820| 72 5f 6f 75 74 5f 63 6f | 6d 70 73 3d 3d 33 2c 20 |r_out_co|mps==3, |
|00004830| 6e 6f 20 64 69 74 68 65 | 72 69 6e 67 20 2a 2f 0a |no dithe|ring */.|
|00004840| 58 7b 0a 58 20 20 72 65 | 67 69 73 74 65 72 20 69 |X{.X  re|gister i|
|00004850| 6e 74 20 70 69 78 63 6f | 64 65 3b 0a 58 20 20 72 |nt pixco|de;.X  r|
|00004860| 65 67 69 73 74 65 72 20 | 4a 53 41 4d 50 52 4f 57 |egister |JSAMPROW|
|00004870| 20 70 74 72 30 2c 20 70 | 74 72 31 2c 20 70 74 72 | ptr0, p|tr1, ptr|
|00004880| 32 2c 20 70 74 72 6f 75 | 74 3b 0a 58 20 20 72 65 |2, ptrou|t;.X  re|
|00004890| 67 69 73 74 65 72 20 6c | 6f 6e 67 20 63 6f 6c 3b |gister l|ong col;|
|000048a0| 0a 58 20 20 69 6e 74 20 | 72 6f 77 3b 0a 58 20 20 |.X  int |row;.X  |
|000048b0| 6c 6f 6e 67 20 77 69 64 | 74 68 20 3d 20 63 69 6e |long wid|th = cin|
|000048c0| 66 6f 2d 3e 69 6d 61 67 | 65 5f 77 69 64 74 68 3b |fo->imag|e_width;|
|000048d0| 0a 58 0a 58 20 20 66 6f | 72 20 28 72 6f 77 20 3d |.X.X  fo|r (row =|
|000048e0| 20 30 3b 20 72 6f 77 20 | 3c 20 6e 75 6d 5f 72 6f | 0; row |< num_ro|
|000048f0| 77 73 3b 20 72 6f 77 2b | 2b 29 20 7b 0a 58 20 20 |ws; row+|+) {.X  |
|00004900| 20 20 64 6f 5f 63 6f 6c | 6f 72 5f 63 6f 6e 76 65 |  do_col|or_conve|
|00004910| 72 73 69 6f 6e 28 63 69 | 6e 66 6f 2c 20 69 6e 70 |rsion(ci|nfo, inp|
|00004920| 75 74 5f 64 61 74 61 2c | 20 72 6f 77 29 3b 0a 58 |ut_data,| row);.X|
|00004930| 20 20 20 20 70 74 72 30 | 20 3d 20 69 6e 70 75 74 |    ptr0| = input|
|00004940| 5f 62 75 66 66 65 72 5b | 30 5d 3b 0a 58 20 20 20 |_buffer[|0];.X   |
|00004950| 20 70 74 72 31 20 3d 20 | 69 6e 70 75 74 5f 62 75 | ptr1 = |input_bu|
|00004960| 66 66 65 72 5b 31 5d 3b | 0a 58 20 20 20 20 70 74 |ffer[1];|.X    pt|
|00004970| 72 32 20 3d 20 69 6e 70 | 75 74 5f 62 75 66 66 65 |r2 = inp|ut_buffe|
|00004980| 72 5b 32 5d 3b 0a 58 20 | 20 20 20 70 74 72 6f 75 |r[2];.X |   ptrou|
|00004990| 74 20 3d 20 6f 75 74 70 | 75 74 5f 64 61 74 61 5b |t = outp|ut_data[|
|000049a0| 72 6f 77 5d 3b 0a 58 20 | 20 20 20 66 6f 72 20 28 |row];.X |   for (|
|000049b0| 63 6f 6c 20 3d 20 77 69 | 64 74 68 3b 20 63 6f 6c |col = wi|dth; col|
|000049c0| 20 3e 20 30 3b 20 63 6f | 6c 2d 2d 29 20 7b 0a 58 | > 0; co|l--) {.X|
|000049d0| 20 20 20 20 20 20 70 69 | 78 63 6f 64 65 20 20 3d |      pi|xcode  =|
|000049e0| 20 47 45 54 4a 53 41 4d | 50 4c 45 28 63 6f 6c 6f | GETJSAM|PLE(colo|
|000049f0| 72 69 6e 64 65 78 5b 30 | 5d 5b 47 45 54 4a 53 41 |rindex[0|][GETJSA|
|00004a00| 4d 50 4c 45 28 2a 70 74 | 72 30 2b 2b 29 5d 29 3b |MPLE(*pt|r0++)]);|
|00004a10| 0a 58 20 20 20 20 20 20 | 70 69 78 63 6f 64 65 20 |.X      |pixcode |
|00004a20| 2b 3d 20 47 45 54 4a 53 | 41 4d 50 4c 45 28 63 6f |+= GETJS|AMPLE(co|
|00004a30| 6c 6f 72 69 6e 64 65 78 | 5b 31 5d 5b 47 45 54 4a |lorindex|[1][GETJ|
|00004a40| 53 41 4d 50 4c 45 28 2a | 70 74 72 31 2b 2b 29 5d |SAMPLE(*|ptr1++)]|
|00004a50| 29 3b 0a 58 20 20 20 20 | 20 20 70 69 78 63 6f 64 |);.X    |  pixcod|
|00004a60| 65 20 2b 3d 20 47 45 54 | 4a 53 41 4d 50 4c 45 28 |e += GET|JSAMPLE(|
|00004a70| 63 6f 6c 6f 72 69 6e 64 | 65 78 5b 32 5d 5b 47 45 |colorind|ex[2][GE|
|00004a80| 54 4a 53 41 4d 50 4c 45 | 28 2a 70 74 72 32 2b 2b |TJSAMPLE|(*ptr2++|
|00004a90| 29 5d 29 3b 0a 58 20 20 | 20 20 20 20 2a 70 74 72 |)]);.X  |    *ptr|
|00004aa0| 6f 75 74 2b 2b 20 3d 20 | 28 4a 53 41 4d 50 4c 45 |out++ = |(JSAMPLE|
|00004ab0| 29 20 70 69 78 63 6f 64 | 65 3b 0a 58 20 20 20 20 |) pixcod|e;.X    |
|00004ac0| 7d 0a 58 20 20 7d 0a 58 | 7d 0a 58 0a 58 0a 58 4d |}.X  }.X|}.X.X.XM|
|00004ad0| 45 54 48 4f 44 44 45 46 | 20 76 6f 69 64 0a 58 63 |ETHODDEF| void.Xc|
|00004ae0| 6f 6c 6f 72 5f 71 75 61 | 6e 74 69 7a 65 5f 64 69 |olor_qua|ntize_di|
|00004af0| 74 68 65 72 20 28 64 65 | 63 6f 6d 70 72 65 73 73 |ther (de|compress|
|00004b00| 5f 69 6e 66 6f 5f 70 74 | 72 20 63 69 6e 66 6f 2c |_info_pt|r cinfo,|
|00004b10| 20 69 6e 74 20 6e 75 6d | 5f 72 6f 77 73 2c 0a 58 | int num|_rows,.X|
|00004b20| 09 09 20 20 20 20 20 20 | 20 4a 53 41 4d 50 49 4d |..      | JSAMPIM|
|00004b30| 41 47 45 20 69 6e 70 75 | 74 5f 64 61 74 61 2c 20 |AGE inpu|t_data, |
|00004b40| 4a 53 41 4d 50 41 52 52 | 41 59 20 6f 75 74 70 75 |JSAMPARR|AY outpu|
|00004b50| 74 5f 64 61 74 61 29 0a | 58 2f 2a 20 47 65 6e 65 |t_data).|X/* Gene|
|00004b60| 72 61 6c 20 63 61 73 65 | 2c 20 77 69 74 68 20 46 |ral case|, with F|
|00004b70| 6c 6f 79 64 2d 53 74 65 | 69 6e 62 65 72 67 20 64 |loyd-Ste|inberg d|
|00004b80| 69 74 68 65 72 69 6e 67 | 20 2a 2f 0a 58 7b 0a 58 |ithering| */.X{.X|
|00004b90| 20 20 72 65 67 69 73 74 | 65 72 20 46 53 45 52 52 |  regist|er FSERR|
|00004ba0| 4f 52 20 76 61 6c 3b 0a | 58 20 20 46 53 45 52 52 |OR val;.|X  FSERR|
|00004bb0| 4f 52 20 74 77 6f 5f 76 | 61 6c 3b 0a 58 20 20 72 |OR two_v|al;.X  r|
|00004bc0| 65 67 69 73 74 65 72 20 | 46 53 45 52 52 50 54 52 |egister |FSERRPTR|
|00004bd0| 20 74 68 69 73 72 6f 77 | 65 72 72 2c 20 6e 65 78 | thisrow|err, nex|
|00004be0| 74 72 6f 77 65 72 72 3b | 0a 58 20 20 72 65 67 69 |trowerr;|.X  regi|
|00004bf0| 73 74 65 72 20 4a 53 41 | 4d 50 52 4f 57 20 69 6e |ster JSA|MPROW in|
|00004c00| 70 75 74 5f 70 74 72 3b | 0a 58 20 20 72 65 67 69 |put_ptr;|.X  regi|
|00004c10| 73 74 65 72 20 4a 53 41 | 4d 50 52 4f 57 20 6f 75 |ster JSA|MPROW ou|
|00004c20| 74 70 75 74 5f 70 74 72 | 3b 0a 58 20 20 4a 53 41 |tput_ptr|;.X  JSA|
|00004c30| 4d 50 4c 45 20 2a 72 61 | 6e 67 65 5f 6c 69 6d 69 |MPLE *ra|nge_limi|
|00004c40| 74 20 3d 20 63 69 6e 66 | 6f 2d 3e 73 61 6d 70 6c |t = cinf|o->sampl|
|00004c50| 65 5f 72 61 6e 67 65 5f | 6c 69 6d 69 74 3b 0a 58 |e_range_|limit;.X|
|00004c60| 20 20 4a 53 41 4d 50 52 | 4f 57 20 63 6f 6c 6f 72 |  JSAMPR|OW color|
|00004c70| 69 6e 64 65 78 5f 63 69 | 3b 0a 58 20 20 4a 53 41 |index_ci|;.X  JSA|
|00004c80| 4d 50 52 4f 57 20 63 6f | 6c 6f 72 6d 61 70 5f 63 |MPROW co|lormap_c|
|00004c90| 69 3b 0a 58 20 20 72 65 | 67 69 73 74 65 72 20 69 |i;.X  re|gister i|
|00004ca0| 6e 74 20 70 69 78 63 6f | 64 65 3b 0a 58 20 20 69 |nt pixco|de;.X  i|
|00004cb0| 6e 74 20 64 69 72 3b 09 | 09 09 2f 2a 20 31 20 66 |nt dir;.|../* 1 f|
|00004cc0| 6f 72 20 6c 65 66 74 2d | 74 6f 2d 72 69 67 68 74 |or left-|to-right|
|00004cd0| 2c 20 2d 31 20 66 6f 72 | 20 72 69 67 68 74 2d 74 |, -1 for| right-t|
|00004ce0| 6f 2d 6c 65 66 74 20 2a | 2f 0a 58 20 20 69 6e 74 |o-left *|/.X  int|
|00004cf0| 20 63 69 3b 0a 58 20 20 | 69 6e 74 20 6e 63 20 3d | ci;.X  |int nc =|
|00004d00| 20 63 69 6e 66 6f 2d 3e | 63 6f 6c 6f 72 5f 6f 75 | cinfo->|color_ou|
|00004d10| 74 5f 63 6f 6d 70 73 3b | 0a 58 20 20 69 6e 74 20 |t_comps;|.X  int |
|00004d20| 72 6f 77 3b 0a 58 20 20 | 6c 6f 6e 67 20 63 6f 6c |row;.X  |long col|
|00004d30| 5f 63 6f 75 6e 74 65 72 | 3b 0a 58 20 20 6c 6f 6e |_counter|;.X  lon|
|00004d40| 67 20 77 69 64 74 68 20 | 3d 20 63 69 6e 66 6f 2d |g width |= cinfo-|
|00004d50| 3e 69 6d 61 67 65 5f 77 | 69 64 74 68 3b 0a 58 20 |>image_w|idth;.X |
|00004d60| 20 53 48 49 46 54 5f 54 | 45 4d 50 53 0a 58 0a 58 | SHIFT_T|EMPS.X.X|
|00004d70| 20 20 66 6f 72 20 28 72 | 6f 77 20 3d 20 30 3b 20 |  for (r|ow = 0; |
|00004d80| 72 6f 77 20 3c 20 6e 75 | 6d 5f 72 6f 77 73 3b 20 |row < nu|m_rows; |
|00004d90| 72 6f 77 2b 2b 29 20 7b | 0a 58 20 20 20 20 64 6f |row++) {|.X    do|
|00004da0| 5f 63 6f 6c 6f 72 5f 63 | 6f 6e 76 65 72 73 69 6f |_color_c|onversio|
|00004db0| 6e 28 63 69 6e 66 6f 2c | 20 69 6e 70 75 74 5f 64 |n(cinfo,| input_d|
|00004dc0| 61 74 61 2c 20 72 6f 77 | 29 3b 0a 58 20 20 20 20 |ata, row|);.X    |
|00004dd0| 2f 2a 20 49 6e 69 74 69 | 61 6c 69 7a 65 20 6f 75 |/* Initi|alize ou|
|00004de0| 74 70 75 74 20 76 61 6c | 75 65 73 20 74 6f 20 30 |tput val|ues to 0|
|00004df0| 20 73 6f 20 63 61 6e 20 | 70 72 6f 63 65 73 73 20 | so can |process |
|00004e00| 63 6f 6d 70 6f 6e 65 6e | 74 73 20 73 65 70 61 72 |componen|ts separ|
|00004e10| 61 74 65 6c 79 20 2a 2f | 0a 58 20 20 20 20 6a 7a |ately */|.X    jz|
|00004e20| 65 72 6f 5f 66 61 72 28 | 28 76 6f 69 64 20 46 41 |ero_far(|(void FA|
|00004e30| 52 20 2a 29 20 6f 75 74 | 70 75 74 5f 64 61 74 61 |R *) out|put_data|
|00004e40| 5b 72 6f 77 5d 2c 0a 58 | 09 20 20 20 20 20 20 28 |[row],.X|.      (|
|00004e50| 73 69 7a 65 5f 74 29 20 | 28 77 69 64 74 68 20 2a |size_t) |(width *|
|00004e60| 20 53 49 5a 45 4f 46 28 | 4a 53 41 4d 50 4c 45 29 | SIZEOF(|JSAMPLE)|
|00004e70| 29 29 3b 0a 58 20 20 20 | 20 66 6f 72 20 28 63 69 |));.X   | for (ci|
|00004e80| 20 3d 20 30 3b 20 63 69 | 20 3c 20 6e 63 3b 20 63 | = 0; ci| < nc; c|
|00004e90| 69 2b 2b 29 20 7b 0a 58 | 20 20 20 20 20 20 69 66 |i++) {.X|      if|
|00004ea0| 20 28 6f 6e 5f 6f 64 64 | 5f 72 6f 77 29 20 7b 0a | (on_odd|_row) {.|
|00004eb0| 58 09 2f 2a 20 77 6f 72 | 6b 20 72 69 67 68 74 20 |X./* wor|k right |
|00004ec0| 74 6f 20 6c 65 66 74 20 | 69 6e 20 74 68 69 73 20 |to left |in this |
|00004ed0| 72 6f 77 20 2a 2f 0a 58 | 09 64 69 72 20 3d 20 2d |row */.X|.dir = -|
|00004ee0| 31 3b 0a 58 09 69 6e 70 | 75 74 5f 70 74 72 20 3d |1;.X.inp|ut_ptr =|
|00004ef0| 20 69 6e 70 75 74 5f 62 | 75 66 66 65 72 5b 63 69 | input_b|uffer[ci|
|00004f00| 5d 20 2b 20 28 77 69 64 | 74 68 2d 31 29 3b 0a 58 |] + (wid|th-1);.X|
|00004f10| 09 6f 75 74 70 75 74 5f | 70 74 72 20 3d 20 6f 75 |.output_|ptr = ou|
|00004f20| 74 70 75 74 5f 64 61 74 | 61 5b 72 6f 77 5d 20 2b |tput_dat|a[row] +|
|00004f30| 20 28 77 69 64 74 68 2d | 31 29 3b 0a 58 09 74 68 | (width-|1);.X.th|
|00004f40| 69 73 72 6f 77 65 72 72 | 20 3d 20 6f 64 64 72 6f |isrowerr| = oddro|
|00004f50| 77 65 72 72 73 5b 63 69 | 5d 20 2b 20 31 3b 0a 58 |werrs[ci|] + 1;.X|
|00004f60| 09 6e 65 78 74 72 6f 77 | 65 72 72 20 3d 20 65 76 |.nextrow|err = ev|
|00004f70| 65 6e 72 6f 77 65 72 72 | 73 5b 63 69 5d 20 2b 20 |enrowerr|s[ci] + |
|00004f80| 77 69 64 74 68 3b 0a 58 | 20 20 20 20 20 20 7d 20 |width;.X|      } |
|00004f90| 65 6c 73 65 20 7b 0a 58 | 09 2f 2a 20 77 6f 72 6b |else {.X|./* work|
|00004fa0| 20 6c 65 66 74 20 74 6f | 20 72 69 67 68 74 20 69 | left to| right i|
|00004fb0| 6e 20 74 68 69 73 20 72 | 6f 77 20 2a 2f 0a 58 09 |n this r|ow */.X.|
|00004fc0| 64 69 72 20 3d 20 31 3b | 0a 58 09 69 6e 70 75 74 |dir = 1;|.X.input|
|00004fd0| 5f 70 74 72 20 3d 20 69 | 6e 70 75 74 5f 62 75 66 |_ptr = i|nput_buf|
|00004fe0| 66 65 72 5b 63 69 5d 3b | 0a 58 09 6f 75 74 70 75 |fer[ci];|.X.outpu|
|00004ff0| 74 5f 70 74 72 20 3d 20 | 6f 75 74 70 75 74 5f 64 |t_ptr = |output_d|
|00005000| 61 74 61 5b 72 6f 77 5d | 3b 0a 58 09 74 68 69 73 |ata[row]|;.X.this|
|00005010| 72 6f 77 65 72 72 20 3d | 20 65 76 65 6e 72 6f 77 |rowerr =| evenrow|
|00005020| 65 72 72 73 5b 63 69 5d | 20 2b 20 31 3b 0a 58 09 |errs[ci]| + 1;.X.|
|00005030| 6e 65 78 74 72 6f 77 65 | 72 72 20 3d 20 6f 64 64 |nextrowe|rr = odd|
|00005040| 72 6f 77 65 72 72 73 5b | 63 69 5d 20 2b 20 77 69 |rowerrs[|ci] + wi|
|00005050| 64 74 68 3b 0a 58 20 20 | 20 20 20 20 7d 0a 58 20 |dth;.X  |    }.X |
|00005060| 20 20 20 20 20 63 6f 6c | 6f 72 69 6e 64 65 78 5f |     col|orindex_|
|00005070| 63 69 20 3d 20 63 6f 6c | 6f 72 69 6e 64 65 78 5b |ci = col|orindex[|
|00005080| 63 69 5d 3b 0a 58 20 20 | 20 20 20 20 63 6f 6c 6f |ci];.X  |    colo|
|00005090| 72 6d 61 70 5f 63 69 20 | 3d 20 63 6f 6c 6f 72 6d |rmap_ci |= colorm|
|000050a0| 61 70 5b 63 69 5d 3b 0a | 58 20 20 20 20 20 20 2a |ap[ci];.|X      *|
|000050b0| 6e 65 78 74 72 6f 77 65 | 72 72 20 3d 20 30 3b 09 |nextrowe|rr = 0;.|
|000050c0| 09 2f 2a 20 6e 65 65 64 | 20 6f 6e 6c 79 20 69 6e |./* need| only in|
|000050d0| 69 74 69 61 6c 69 7a 65 | 20 74 68 69 73 20 6f 6e |itialize| this on|
|000050e0| 65 20 65 6e 74 72 79 20 | 2a 2f 0a 58 20 20 20 20 |e entry |*/.X    |
|000050f0| 20 20 66 6f 72 20 28 63 | 6f 6c 5f 63 6f 75 6e 74 |  for (c|ol_count|
|00005100| 65 72 20 3d 20 77 69 64 | 74 68 3b 20 63 6f 6c 5f |er = wid|th; col_|
|00005110| 63 6f 75 6e 74 65 72 20 | 3e 20 30 3b 20 63 6f 6c |counter |> 0; col|
|00005120| 5f 63 6f 75 6e 74 65 72 | 2d 2d 29 20 7b 0a 58 09 |_counter|--) {.X.|
|00005130| 2f 2a 20 47 65 74 20 61 | 63 63 75 6d 75 6c 61 74 |/* Get a|ccumulat|
|00005140| 65 64 20 65 72 72 6f 72 | 20 66 6f 72 20 74 68 69 |ed error| for thi|
|00005150| 73 20 63 6f 6d 70 6f 6e | 65 6e 74 2c 20 72 6f 75 |s compon|ent, rou|
|00005160| 6e 64 20 74 6f 20 69 6e | 74 65 67 65 72 2e 0a 58 |nd to in|teger..X|
|00005170| 09 20 2a 20 52 49 47 48 | 54 5f 53 48 49 46 54 20 |. * RIGH|T_SHIFT |
|00005180| 72 6f 75 6e 64 73 20 74 | 6f 77 61 72 64 73 20 6d |rounds t|owards m|
|00005190| 69 6e 75 73 20 69 6e 66 | 69 6e 69 74 79 2c 20 73 |inus inf|inity, s|
|000051a0| 6f 20 61 64 64 69 6e 67 | 20 38 20 69 73 20 63 6f |o adding| 8 is co|
|000051b0| 72 72 65 63 74 0a 58 09 | 20 2a 20 66 6f 72 20 65 |rrect.X.| * for e|
|000051c0| 69 74 68 65 72 20 73 69 | 67 6e 20 6f 66 20 74 68 |ither si|gn of th|
|000051d0| 65 20 65 72 72 6f 72 20 | 76 61 6c 75 65 2e 0a 58 |e error |value..X|
|000051e0| 09 20 2a 2f 0a 58 09 76 | 61 6c 20 3d 20 52 49 47 |. */.X.v|al = RIG|
|000051f0| 48 54 5f 53 48 49 46 54 | 28 2a 74 68 69 73 72 6f |HT_SHIFT|(*thisro|
|00005200| 77 65 72 72 20 2b 20 38 | 2c 20 34 29 3b 0a 58 09 |werr + 8|, 4);.X.|
|00005210| 2f 2a 20 43 6f 6d 70 75 | 74 65 20 70 69 78 65 6c |/* Compu|te pixel|
|00005220| 20 76 61 6c 75 65 20 2b | 20 65 72 72 6f 72 20 63 | value +| error c|
|00005230| 6f 6d 70 65 6e 73 61 74 | 69 6f 6e 2c 20 72 61 6e |ompensat|ion, ran|
|00005240| 67 65 2d 6c 69 6d 69 74 | 20 74 6f 0a 58 09 20 2a |ge-limit| to.X. *|
|00005250| 20 30 2e 2e 4d 41 58 4a | 53 41 4d 50 4c 45 2e 20 | 0..MAXJ|SAMPLE. |
|00005260| 20 4e 6f 74 65 20 6d 61 | 78 20 65 72 72 6f 72 20 | Note ma|x error |
|00005270| 76 61 6c 75 65 20 69 73 | 20 2b 2d 20 4d 41 58 4a |value is| +- MAXJ|
|00005280| 53 41 4d 50 4c 45 2e 0a | 58 09 20 2a 2f 0a 58 09 |SAMPLE..|X. */.X.|
|00005290| 76 61 6c 20 3d 20 47 45 | 54 4a 53 41 4d 50 4c 45 |val = GE|TJSAMPLE|
|000052a0| 28 72 61 6e 67 65 5f 6c | 69 6d 69 74 5b 47 45 54 |(range_l|imit[GET|
|000052b0| 4a 53 41 4d 50 4c 45 28 | 2a 69 6e 70 75 74 5f 70 |JSAMPLE(|*input_p|
|000052c0| 74 72 29 20 2b 20 76 61 | 6c 5d 29 3b 0a 58 09 2f |tr) + va|l]);.X./|
|000052d0| 2a 20 53 65 6c 65 63 74 | 20 6f 75 74 70 75 74 20 |* Select| output |
|000052e0| 76 61 6c 75 65 2c 20 61 | 63 63 75 6d 75 6c 61 74 |value, a|ccumulat|
|000052f0| 65 20 69 6e 74 6f 20 6f | 75 74 70 75 74 20 63 6f |e into o|utput co|
|00005300| 64 65 20 66 6f 72 20 74 | 68 69 73 20 70 69 78 65 |de for t|his pixe|
|00005310| 6c 20 2a 2f 0a 58 09 70 | 69 78 63 6f 64 65 20 3d |l */.X.p|ixcode =|
|00005320| 20 47 45 54 4a 53 41 4d | 50 4c 45 28 2a 6f 75 74 | GETJSAM|PLE(*out|
|00005330| 70 75 74 5f 70 74 72 29 | 20 2b 20 47 45 54 4a 53 |put_ptr)| + GETJS|
|00005340| 41 4d 50 4c 45 28 63 6f | 6c 6f 72 69 6e 64 65 78 |AMPLE(co|lorindex|
|00005350| 5f 63 69 5b 76 61 6c 5d | 29 3b 0a 58 09 2a 6f 75 |_ci[val]|);.X.*ou|
|00005360| 74 70 75 74 5f 70 74 72 | 20 3d 20 28 4a 53 41 4d |tput_ptr| = (JSAM|
|00005370| 50 4c 45 29 20 70 69 78 | 63 6f 64 65 3b 0a 58 09 |PLE) pix|code;.X.|
|00005380| 2f 2a 20 43 6f 6d 70 75 | 74 65 20 61 63 74 75 61 |/* Compu|te actua|
|00005390| 6c 20 72 65 70 72 65 73 | 65 6e 74 61 74 69 6f 6e |l repres|entation|
|000053a0| 20 65 72 72 6f 72 20 61 | 74 20 74 68 69 73 20 70 | error a|t this p|
|000053b0| 69 78 65 6c 20 2a 2f 0a | 58 09 2f 2a 20 4e 6f 74 |ixel */.|X./* Not|
|000053c0| 65 3a 20 77 65 20 63 61 | 6e 20 64 6f 20 74 68 69 |e: we ca|n do thi|
|000053d0| 73 20 65 76 65 6e 20 74 | 68 6f 75 67 68 20 77 65 |s even t|hough we|
|000053e0| 20 64 6f 6e 27 74 20 79 | 65 74 20 68 61 76 65 20 | don't y|et have |
|000053f0| 74 68 65 20 66 69 6e 61 | 6c 20 2a 2f 0a 58 09 2f |the fina|l */.X./|
|00005400| 2a 20 76 61 6c 75 65 20 | 6f 66 20 70 69 78 63 6f |* value |of pixco|
|00005410| 64 65 2c 20 62 65 63 61 | 75 73 65 20 74 68 65 20 |de, beca|use the |
|00005420| 63 6f 6c 6f 72 6d 61 70 | 20 69 73 20 6f 72 74 68 |colormap| is orth|
|00005430| 6f 67 6f 6e 61 6c 2e 20 | 2a 2f 0a 58 09 76 61 6c |ogonal. |*/.X.val|
|00005440| 20 2d 3d 20 47 45 54 4a | 53 41 4d 50 4c 45 28 63 | -= GETJ|SAMPLE(c|
|00005450| 6f 6c 6f 72 6d 61 70 5f | 63 69 5b 70 69 78 63 6f |olormap_|ci[pixco|
|00005460| 64 65 5d 29 3b 0a 58 09 | 2f 2a 20 50 72 6f 70 61 |de]);.X.|/* Propa|
|00005470| 67 61 74 65 20 65 72 72 | 6f 72 20 74 6f 20 28 73 |gate err|or to (s|
|00005480| 61 6d 65 20 63 6f 6d 70 | 6f 6e 65 6e 74 20 6f 66 |ame comp|onent of|
|00005490| 29 20 61 64 6a 61 63 65 | 6e 74 20 70 69 78 65 6c |) adjace|nt pixel|
|000054a0| 73 20 2a 2f 0a 58 09 2f | 2a 20 52 65 6d 65 6d 62 |s */.X./|* Rememb|
|000054b0| 65 72 20 74 68 61 74 20 | 6e 65 78 74 72 6f 77 65 |er that |nextrowe|
|000054c0| 72 72 20 65 6e 74 72 69 | 65 73 20 61 72 65 20 69 |rr entri|es are i|
|000054d0| 6e 20 72 65 76 65 72 73 | 65 20 6f 72 64 65 72 21 |n revers|e order!|
|000054e0| 20 2a 2f 0a 58 09 74 77 | 6f 5f 76 61 6c 20 3d 20 | */.X.tw|o_val = |
|000054f0| 76 61 6c 20 2a 20 32 3b | 0a 58 09 6e 65 78 74 72 |val * 2;|.X.nextr|
|00005500| 6f 77 65 72 72 5b 2d 31 | 5d 20 20 3d 20 76 61 6c |owerr[-1|]  = val|
|00005510| 3b 20 2f 2a 20 6e 6f 74 | 20 2b 3d 2c 20 73 69 6e |; /* not| +=, sin|
|00005520| 63 65 20 6e 6f 74 20 69 | 6e 69 74 69 61 6c 69 7a |ce not i|nitializ|
|00005530| 65 64 20 79 65 74 20 2a | 2f 0a 58 09 76 61 6c 20 |ed yet *|/.X.val |
|00005540| 2b 3d 20 74 77 6f 5f 76 | 61 6c 3b 09 09 2f 2a 20 |+= two_v|al;../* |
|00005550| 66 6f 72 6d 20 65 72 72 | 6f 72 20 2a 20 33 20 2a |form err|or * 3 *|
|00005560| 2f 0a 58 09 6e 65 78 74 | 72 6f 77 65 72 72 5b 20 |/.X.next|rowerr[ |
|00005570| 31 5d 20 2b 3d 20 76 61 | 6c 3b 0a 58 09 76 61 6c |1] += va|l;.X.val|
|00005580| 20 2b 3d 20 74 77 6f 5f | 76 61 6c 3b 09 09 2f 2a | += two_|val;../*|
|00005590| 20 66 6f 72 6d 20 65 72 | 72 6f 72 20 2a 20 35 20 | form er|ror * 5 |
|000055a0| 2a 2f 0a 58 09 6e 65 78 | 74 72 6f 77 65 72 72 5b |*/.X.nex|trowerr[|
|000055b0| 20 30 5d 20 2b 3d 20 76 | 61 6c 3b 0a 58 09 76 61 | 0] += v|al;.X.va|
|000055c0| 6c 20 2b 3d 20 74 77 6f | 5f 76 61 6c 3b 09 09 2f |l += two|_val;../|
|000055d0| 2a 20 66 6f 72 6d 20 65 | 72 72 6f 72 20 2a 20 37 |* form e|rror * 7|
|000055e0| 20 2a 2f 0a 58 09 74 68 | 69 73 72 6f 77 65 72 72 | */.X.th|isrowerr|
|000055f0| 5b 20 31 5d 20 2b 3d 20 | 76 61 6c 3b 0a 58 09 69 |[ 1] += |val;.X.i|
|00005600| 6e 70 75 74 5f 70 74 72 | 20 2b 3d 20 64 69 72 3b |nput_ptr| += dir;|
|00005610| 09 2f 2a 20 61 64 76 61 | 6e 63 65 20 69 6e 70 75 |./* adva|nce inpu|
|00005620| 74 20 70 74 72 20 74 6f | 20 6e 65 78 74 20 63 6f |t ptr to| next co|
|00005630| 6c 75 6d 6e 20 2a 2f 0a | 58 09 6f 75 74 70 75 74 |lumn */.|X.output|
|00005640| 5f 70 74 72 20 2b 3d 20 | 64 69 72 3b 09 2f 2a 20 |_ptr += |dir;./* |
|00005650| 61 64 76 61 6e 63 65 20 | 6f 75 74 70 75 74 20 70 |advance |output p|
|00005660| 74 72 20 74 6f 20 6e 65 | 78 74 20 63 6f 6c 75 6d |tr to ne|xt colum|
|00005670| 6e 20 2a 2f 0a 58 09 74 | 68 69 73 72 6f 77 65 72 |n */.X.t|hisrower|
|00005680| 72 2b 2b 3b 09 09 2f 2a | 20 63 75 72 2d 72 6f 77 |r++;../*| cur-row|
|00005690| 20 65 72 72 6f 72 20 70 | 74 72 20 61 64 76 61 6e | error p|tr advan|
|000056a0| 63 65 73 20 74 6f 20 72 | 69 67 68 74 20 2a 2f 0a |ces to r|ight */.|
|000056b0| 58 09 6e 65 78 74 72 6f | 77 65 72 72 2d 2d 3b 09 |X.nextro|werr--;.|
|000056c0| 09 2f 2a 20 6e 65 78 74 | 2d 72 6f 77 20 65 72 72 |./* next|-row err|
|000056d0| 6f 72 20 70 74 72 20 61 | 64 76 61 6e 63 65 73 20 |or ptr a|dvances |
|000056e0| 74 6f 20 6c 65 66 74 20 | 2a 2f 0a 58 20 20 20 20 |to left |*/.X    |
|000056f0| 20 20 7d 0a 58 20 20 20 | 20 7d 0a 58 20 20 20 20 |  }.X   | }.X    |
|00005700| 6f 6e 5f 6f 64 64 5f 72 | 6f 77 20 3d 20 28 6f 6e |on_odd_r|ow = (on|
|00005710| 5f 6f 64 64 5f 72 6f 77 | 20 3f 20 46 41 4c 53 45 |_odd_row| ? FALSE|
|00005720| 20 3a 20 54 52 55 45 29 | 3b 0a 58 20 20 7d 0a 58 | : TRUE)|;.X  }.X|
|00005730| 7d 0a 58 0a 58 0a 58 2f | 2a 0a 58 20 2a 20 46 69 |}.X.X.X/|*.X * Fi|
|00005740| 6e 69 73 68 20 75 70 20 | 61 74 20 74 68 65 20 65 |nish up |at the e|
|00005750| 6e 64 20 6f 66 20 74 68 | 65 20 66 69 6c 65 2e 0a |nd of th|e file..|
|00005760| 58 20 2a 2f 0a 58 0a 58 | 4d 45 54 48 4f 44 44 45 |X */.X.X|METHODDE|
|00005770| 46 20 76 6f 69 64 0a 58 | 63 6f 6c 6f 72 5f 71 75 |F void.X|color_qu|
|00005780| 61 6e 74 5f 74 65 72 6d | 20 28 64 65 63 6f 6d 70 |ant_term| (decomp|
|00005790| 72 65 73 73 5f 69 6e 66 | 6f 5f 70 74 72 20 63 69 |ress_inf|o_ptr ci|
|000057a0| 6e 66 6f 29 0a 58 7b 0a | 58 20 20 2f 2a 20 6e 6f |nfo).X{.|X  /* no|
|000057b0| 20 77 6f 72 6b 20 28 77 | 65 20 6c 65 74 20 66 72 | work (w|e let fr|
|000057c0| 65 65 5f 61 6c 6c 20 72 | 65 6c 65 61 73 65 20 74 |ee_all r|elease t|
|000057d0| 68 65 20 77 6f 72 6b 73 | 70 61 63 65 29 20 2a 2f |he works|pace) */|
|000057e0| 0a 58 20 20 2f 2a 20 4e | 6f 74 65 20 74 68 61 74 |.X  /* N|ote that|
|000057f0| 20 77 65 20 2a 6d 75 73 | 74 6e 27 74 2a 20 66 72 | we *mus|tn't* fr|
|00005800| 65 65 20 74 68 65 20 63 | 6f 6c 6f 72 6d 61 70 20 |ee the c|olormap |
|00005810| 62 65 66 6f 72 65 20 66 | 72 65 65 5f 61 6c 6c 2c |before f|ree_all,|
|00005820| 20 2a 2f 0a 58 20 20 2f | 2a 20 73 69 6e 63 65 20 | */.X  /|* since |
|00005830| 6f 75 74 70 75 74 20 6d | 6f 64 75 6c 65 20 6d 61 |output m|odule ma|
|00005840| 79 20 75 73 65 20 69 74 | 21 20 2a 2f 0a 58 7d 0a |y use it|! */.X}.|
|00005850| 58 0a 58 0a 58 2f 2a 0a | 58 20 2a 20 50 72 65 73 |X.X.X/*.|X * Pres|
|00005860| 63 61 6e 20 73 6f 6d 65 | 20 72 6f 77 73 20 6f 66 |can some| rows of|
|00005870| 20 70 69 78 65 6c 73 2e | 0a 58 20 2a 20 4e 6f 74 | pixels.|.X * Not|
|00005880| 20 75 73 65 64 20 69 6e | 20 6f 6e 65 2d 70 61 73 | used in| one-pas|
|00005890| 73 20 63 61 73 65 2e 0a | 58 20 2a 2f 0a 58 0a 58 |s case..|X */.X.X|
|000058a0| 4d 45 54 48 4f 44 44 45 | 46 20 76 6f 69 64 0a 58 |METHODDE|F void.X|
|000058b0| 63 6f 6c 6f 72 5f 71 75 | 61 6e 74 5f 70 72 65 73 |color_qu|ant_pres|
|000058c0| 63 61 6e 20 28 64 65 63 | 6f 6d 70 72 65 73 73 5f |can (dec|ompress_|
|000058d0| 69 6e 66 6f 5f 70 74 72 | 20 63 69 6e 66 6f 2c 20 |info_ptr| cinfo, |
|000058e0| 69 6e 74 20 6e 75 6d 5f | 72 6f 77 73 2c 0a 58 09 |int num_|rows,.X.|
|000058f0| 09 20 20 20 20 20 4a 53 | 41 4d 50 49 4d 41 47 45 |.     JS|AMPIMAGE|
|00005900| 20 69 6d 61 67 65 5f 64 | 61 74 61 2c 20 4a 53 41 | image_d|ata, JSA|
|00005910| 4d 50 41 52 52 41 59 20 | 77 6f 72 6b 73 70 61 63 |MPARRAY |workspac|
|00005920| 65 29 0a 58 7b 0a 58 20 | 20 45 52 52 45 58 49 54 |e).X{.X | ERREXIT|
|00005930| 28 63 69 6e 66 6f 2d 3e | 65 6d 65 74 68 6f 64 73 |(cinfo->|emethods|
|00005940| 2c 20 22 53 68 6f 75 6c | 64 20 6e 6f 74 20 67 65 |, "Shoul|d not ge|
|00005950| 74 20 68 65 72 65 21 22 | 29 3b 0a 58 7d 0a 58 0a |t here!"|);.X}.X.|
|00005960| 58 0a 58 2f 2a 0a 58 20 | 2a 20 44 6f 20 74 77 6f |X.X/*.X |* Do two|
|00005970| 2d 70 61 73 73 20 71 75 | 61 6e 74 69 7a 61 74 69 |-pass qu|antizati|
|00005980| 6f 6e 2e 0a 58 20 2a 20 | 4e 6f 74 20 75 73 65 64 |on..X * |Not used|
|00005990| 20 69 6e 20 6f 6e 65 2d | 70 61 73 73 20 63 61 73 | in one-|pass cas|
|000059a0| 65 2e 0a 58 20 2a 2f 0a | 58 0a 58 4d 45 54 48 4f |e..X */.|X.XMETHO|
|000059b0| 44 44 45 46 20 76 6f 69 | 64 0a 58 63 6f 6c 6f 72 |DDEF voi|d.Xcolor|
|000059c0| 5f 71 75 61 6e 74 5f 64 | 6f 69 74 20 28 64 65 63 |_quant_d|oit (dec|
|000059d0| 6f 6d 70 72 65 73 73 5f | 69 6e 66 6f 5f 70 74 72 |ompress_|info_ptr|
|000059e0| 20 63 69 6e 66 6f 2c 20 | 71 75 61 6e 74 69 7a 65 | cinfo, |quantize|
|000059f0| 5f 63 61 6c 6c 65 72 5f | 70 74 72 20 73 6f 75 72 |_caller_|ptr sour|
|00005a00| 63 65 5f 6d 65 74 68 6f | 64 29 0a 58 7b 0a 58 20 |ce_metho|d).X{.X |
|00005a10| 20 45 52 52 45 58 49 54 | 28 63 69 6e 66 6f 2d 3e | ERREXIT|(cinfo->|
|00005a20| 65 6d 65 74 68 6f 64 73 | 2c 20 22 53 68 6f 75 6c |emethods|, "Shoul|
|00005a30| 64 20 6e 6f 74 20 67 65 | 74 20 68 65 72 65 21 22 |d not ge|t here!"|
|00005a40| 29 3b 0a 58 7d 0a 58 0a | 58 0a 58 2f 2a 0a 58 20 |);.X}.X.|X.X/*.X |
|00005a50| 2a 20 54 68 65 20 6d 65 | 74 68 6f 64 20 73 65 6c |* The me|thod sel|
|00005a60| 65 63 74 69 6f 6e 20 72 | 6f 75 74 69 6e 65 20 66 |ection r|outine f|
|00005a70| 6f 72 20 31 2d 70 61 73 | 73 20 63 6f 6c 6f 72 20 |or 1-pas|s color |
|00005a80| 71 75 61 6e 74 69 7a 61 | 74 69 6f 6e 2e 0a 58 20 |quantiza|tion..X |
|00005a90| 2a 2f 0a 58 0a 58 47 4c | 4f 42 41 4c 20 76 6f 69 |*/.X.XGL|OBAL voi|
|00005aa0| 64 0a 58 6a 73 65 6c 31 | 71 75 61 6e 74 69 7a 65 |d.Xjsel1|quantize|
|00005ab0| 20 28 64 65 63 6f 6d 70 | 72 65 73 73 5f 69 6e 66 | (decomp|ress_inf|
|00005ac0| 6f 5f 70 74 72 20 63 69 | 6e 66 6f 29 0a 58 7b 0a |o_ptr ci|nfo).X{.|
|00005ad0| 58 20 20 69 66 20 28 21 | 20 63 69 6e 66 6f 2d 3e |X  if (!| cinfo->|
|00005ae0| 74 77 6f 5f 70 61 73 73 | 5f 71 75 61 6e 74 69 7a |two_pass|_quantiz|
|00005af0| 65 29 20 7b 0a 58 20 20 | 20 20 63 69 6e 66 6f 2d |e) {.X  |  cinfo-|
|00005b00| 3e 6d 65 74 68 6f 64 73 | 2d 3e 63 6f 6c 6f 72 5f |>methods|->color_|
|00005b10| 71 75 61 6e 74 5f 69 6e | 69 74 20 3d 20 63 6f 6c |quant_in|it = col|
|00005b20| 6f 72 5f 71 75 61 6e 74 | 5f 69 6e 69 74 3b 0a 58 |or_quant|_init;.X|
|00005b30| 20 20 20 20 69 66 20 28 | 63 69 6e 66 6f 2d 3e 75 |    if (|cinfo->u|
|00005b40| 73 65 5f 64 69 74 68 65 | 72 69 6e 67 29 20 7b 0a |se_dithe|ring) {.|
|00005b50| 58 20 20 20 20 20 20 63 | 69 6e 66 6f 2d 3e 6d 65 |X      c|info->me|
|00005b60| 74 68 6f 64 73 2d 3e 63 | 6f 6c 6f 72 5f 71 75 61 |thods->c|olor_qua|
|00005b70| 6e 74 69 7a 65 20 3d 20 | 63 6f 6c 6f 72 5f 71 75 |ntize = |color_qu|
|00005b80| 61 6e 74 69 7a 65 5f 64 | 69 74 68 65 72 3b 0a 58 |antize_d|ither;.X|
|00005b90| 20 20 20 20 7d 20 65 6c | 73 65 20 7b 0a 58 20 20 |    } el|se {.X  |
|00005ba0| 20 20 20 20 69 66 20 28 | 63 69 6e 66 6f 2d 3e 63 |    if (|cinfo->c|
|00005bb0| 6f 6c 6f 72 5f 6f 75 74 | 5f 63 6f 6d 70 73 20 3d |olor_out|_comps =|
|00005bc0| 3d 20 33 29 0a 58 09 63 | 69 6e 66 6f 2d 3e 6d 65 |= 3).X.c|info->me|
|00005bd0| 74 68 6f 64 73 2d 3e 63 | 6f 6c 6f 72 5f 71 75 61 |thods->c|olor_qua|
|00005be0| 6e 74 69 7a 65 20 3d 20 | 63 6f 6c 6f 72 5f 71 75 |ntize = |color_qu|
|00005bf0| 61 6e 74 69 7a 65 33 3b | 0a 58 20 20 20 20 20 20 |antize3;|.X      |
|00005c00| 65 6c 73 65 0a 58 09 63 | 69 6e 66 6f 2d 3e 6d 65 |else.X.c|info->me|
|00005c10| 74 68 6f 64 73 2d 3e 63 | 6f 6c 6f 72 5f 71 75 61 |thods->c|olor_qua|
|00005c20| 6e 74 69 7a 65 20 3d 20 | 63 6f 6c 6f 72 5f 71 75 |ntize = |color_qu|
|00005c30| 61 6e 74 69 7a 65 3b 0a | 58 20 20 20 20 7d 0a 58 |antize;.|X    }.X|
|00005c40| 20 20 20 20 63 69 6e 66 | 6f 2d 3e 6d 65 74 68 6f |    cinf|o->metho|
|00005c50| 64 73 2d 3e 63 6f 6c 6f | 72 5f 71 75 61 6e 74 5f |ds->colo|r_quant_|
|00005c60| 70 72 65 73 63 61 6e 20 | 3d 20 63 6f 6c 6f 72 5f |prescan |= color_|
|00005c70| 71 75 61 6e 74 5f 70 72 | 65 73 63 61 6e 3b 0a 58 |quant_pr|escan;.X|
|00005c80| 20 20 20 20 63 69 6e 66 | 6f 2d 3e 6d 65 74 68 6f |    cinf|o->metho|
|00005c90| 64 73 2d 3e 63 6f 6c 6f | 72 5f 71 75 61 6e 74 5f |ds->colo|r_quant_|
|00005ca0| 64 6f 69 74 20 3d 20 63 | 6f 6c 6f 72 5f 71 75 61 |doit = c|olor_qua|
|00005cb0| 6e 74 5f 64 6f 69 74 3b | 0a 58 20 20 20 20 63 69 |nt_doit;|.X    ci|
|00005cc0| 6e 66 6f 2d 3e 6d 65 74 | 68 6f 64 73 2d 3e 63 6f |nfo->met|hods->co|
|00005cd0| 6c 6f 72 5f 71 75 61 6e | 74 5f 74 65 72 6d 20 3d |lor_quan|t_term =|
|00005ce0| 20 63 6f 6c 6f 72 5f 71 | 75 61 6e 74 5f 74 65 72 | color_q|uant_ter|
|00005cf0| 6d 3b 0a 58 20 20 7d 0a | 58 7d 0a 58 0a 58 23 65 |m;.X  }.|X}.X.X#e|
|00005d00| 6e 64 69 66 20 2f 2a 20 | 51 55 41 4e 54 5f 31 50 |ndif /* |QUANT_1P|
|00005d10| 41 53 53 5f 53 55 50 50 | 4f 52 54 45 44 20 2a 2f |ASS_SUPP|ORTED */|
|00005d20| 0a 45 4e 44 5f 4f 46 5f | 46 49 4c 45 0a 20 20 69 |.END_OF_|FILE.  i|
|00005d30| 66 20 74 65 73 74 20 32 | 32 30 32 31 20 2d 6e 65 |f test 2|2021 -ne|
|00005d40| 20 60 77 63 20 2d 63 20 | 3c 27 6a 71 75 61 6e 74 | `wc -c |<'jquant|
|00005d50| 31 2e 63 27 60 3b 20 74 | 68 65 6e 0a 20 20 20 20 |1.c'`; t|hen.    |
|00005d60| 65 63 68 6f 20 73 68 61 | 72 3a 20 5c 22 27 6a 71 |echo sha|r: \"'jq|
|00005d70| 75 61 6e 74 31 2e 63 27 | 5c 22 20 75 6e 70 61 63 |uant1.c'|\" unpac|
|00005d80| 6b 65 64 20 77 69 74 68 | 20 77 72 6f 6e 67 20 73 |ked with| wrong s|
|00005d90| 69 7a 65 21 0a 20 20 66 | 69 0a 20 20 23 20 65 6e |ize!.  f|i.  # en|
|00005da0| 64 20 6f 66 20 27 6a 71 | 75 61 6e 74 31 2e 63 27 |d of 'jq|uant1.c'|
|00005db0| 0a 66 69 0a 69 66 20 74 | 65 73 74 20 2d 66 20 27 |.fi.if t|est -f '|
|00005dc0| 74 69 6d 67 2e 70 70 6d | 2e 55 55 2e 42 27 20 2d |timg.ppm|.UU.B' -|
|00005dd0| 61 20 22 24 7b 31 7d 22 | 20 21 3d 20 22 2d 63 22 |a "${1}"| != "-c"|
|00005de0| 20 3b 20 74 68 65 6e 20 | 0a 20 20 65 63 68 6f 20 | ; then |.  echo |
|00005df0| 73 68 61 72 3a 20 57 69 | 6c 6c 20 6e 6f 74 20 63 |shar: Wi|ll not c|
|00005e00| 6c 6f 62 62 65 72 20 65 | 78 69 73 74 69 6e 67 20 |lobber e|xisting |
|00005e10| 66 69 6c 65 20 5c 22 27 | 74 69 6d 67 2e 70 70 6d |file \"'|timg.ppm|
|00005e20| 2e 55 55 2e 42 27 5c 22 | 0a 65 6c 73 65 0a 20 20 |.UU.B'\"|.else.  |
|00005e30| 65 63 68 6f 20 73 68 61 | 72 3a 20 45 78 74 72 61 |echo sha|r: Extra|
|00005e40| 63 74 69 6e 67 20 5c 22 | 27 74 69 6d 67 2e 70 70 |cting \"|'timg.pp|
|00005e50| 6d 2e 55 55 2e 42 27 5c | 22 20 5c 28 33 33 36 37 |m.UU.B'\|" \(3367|
|00005e60| 32 20 63 68 61 72 61 63 | 74 65 72 73 5c 29 0a 20 |2 charac|ters\). |
|00005e70| 20 73 65 64 20 22 73 2f | 5e 58 2f 2f 22 20 3e 27 | sed "s/|^X//" >'|
|00005e80| 74 69 6d 67 2e 70 70 6d | 2e 55 55 2e 42 27 20 3c |timg.ppm|.UU.B' <|
|00005e90| 3c 27 45 4e 44 5f 4f 46 | 5f 46 49 4c 45 27 0a 58 |<'END_OF|_FILE'.X|
|00005ea0| 4d 56 29 22 44 49 55 5d | 53 3f 53 3d 2e 43 54 39 |MV)"DIU]|S?S=.CT9|
|00005eb0| 43 3b 42 2d 28 3a 41 59 | 29 37 51 35 21 39 21 51 |C;B-(:AY|)7Q5!9!Q|
|00005ec0| 25 37 31 34 5c 37 21 30 | 5b 3a 32 29 27 3b 32 31 |%714\7!0|[:2)';21|
|00005ed0| 28 37 31 34 56 39 21 4c | 58 41 33 45 34 0a 58 4d |(714V9!L|XA3E4.XM|
|00005ee0| 4a 25 55 53 4f 27 22 21 | 4f 57 29 5d 4e 36 55 51 |J%USO'"!|OW)]N6UQ|
|00005ef0| 50 27 2d 54 3e 24 4a 22 | 43 55 5e 37 49 27 2a 48 |P'-T>$J"|CU^7I'*H|
|00005f00| 45 36 2a 36 4c 37 4a 4d | 3c 43 3d 48 33 51 20 5e |E6*6L7JM|<C=H3Q ^|
|00005f10| 37 51 55 2a 36 51 3d 23 | 37 31 45 23 0a 58 4d 37 |7QU*6Q=#|71E#.XM7|
|00005f20| 51 49 22 38 21 41 21 37 | 41 39 21 37 41 39 21 37 |QI"8!A!7|A9!7A9!7|
|00005f30| 31 35 20 36 41 31 21 37 | 31 41 28 38 31 51 2c 32 |15 6A1!7|1A(81Q,2|
|00005f40| 30 2c 50 36 30 5c 57 34 | 40 34 48 37 40 58 4a 4c |0,P60\W4|@4H7@XJL|
|00005f50| 36 25 55 50 47 2e 20 49 | 25 39 3d 0a 58 4d 52 48 |6%UPG. I|%9=.XMRH|
|00005f60| 26 23 56 29 3a 31 53 39 | 26 28 5a 2b 2a 47 53 5a |&#V):1S9|&(Z+*GSZ|
|00005f70| 22 33 56 4a 5e 3f 5d 3c | 3a 59 58 3a 22 3d 48 35 |"3VJ^?]<|:YX:"=H5|
|00005f80| 29 36 45 33 3c 5e 4e 34 | 51 36 52 55 21 3c 56 25 |)6E3<^N4|Q6RU!<V%|
|00005f90| 35 43 59 36 31 51 57 36 | 29 4b 0a 58 4d 58 27 2d |5CY61QW6|)K.XMX'-|
|00005fa0| 57 55 57 31 55 54 57 39 | 55 54 57 41 58 56 27 39 |WUW1UTW9|UTWAXV'9|
|00005fb0| 5a 57 27 31 5a 58 36 59 | 5a 57 56 51 58 58 47 3d |ZW'1ZX6Y|ZWVQXXG=|
|00005fc0| 5e 55 36 55 53 54 46 49 | 50 54 46 49 52 53 36 35 |^U6USTFI|PTFIRS65|
|00005fd0| 4f 53 56 4d 54 54 57 29 | 5c 0a 58 4d 52 57 25 5a |OSVMTTW)|\.XMRW%Z|
|00005fe0| 53 37 39 5e 53 37 46 20 | 55 58 2e 2a 57 28 36 2d |S79^S7F |UX.*W(6-|
|00005ff0| 56 37 52 25 57 27 4a 22 | 57 37 35 5f 55 46 2d 4f |V7R%W'J"|W75_UF-O|
|00006000| 54 45 39 3f 56 25 45 41 | 55 56 2d 47 55 46 35 48 |TE9?V%EA|UV-GUF5H|
|00006010| 54 25 59 44 53 55 45 42 | 0a 58 4d 56 25 4d 48 57 |T%YDSUEB|.XMV%MHW|
|00006020| 36 31 50 58 37 31 5e 5a | 49 26 34 5c 4b 26 4e 5f |61PX71^Z|I&4\K&N_|
|00006030| 4c 53 26 5f 5d 3b 2f 5b | 3b 56 58 56 29 4e 3a 55 |LS&_];/[|;VXV)N:U|
|00006040| 38 52 2e 53 57 45 5b 52 | 56 5d 53 52 46 51 55 52 |8R.SWE[R|V]SRFQUR|
|00006050| 26 3d 52 51 26 25 4f 0a | 58 4d 52 26 2d 52 51 35 |&=RQ&%O.|XMR&-RQ5|
|00006060| 55 4d 4d 24 4d 39 48 33 | 45 23 48 43 49 22 4a 54 |UMM$M9H3|E#HCI"JT|
|00006070| 2d 2d 49 33 59 2a 48 43 | 55 2e 45 43 21 27 3e 41 |--I3Y*HC|U.EC!'>A|
|00006080| 30 53 3f 21 4c 5f 38 40 | 5c 54 36 30 58 55 3a 21 |0S?!L_8@|\T60XU:!|
|00006090| 55 25 3a 31 59 26 0a 58 | 4d 3e 42 5d 37 3c 42 3d |U%:1Y&.X|M>B]7<B=|
|000060a0| 2e 39 21 48 5a 47 55 39 | 52 55 58 5e 44 56 59 2e |.9!HZGU9|RUX^DVY.|
|000060b0| 47 4c 56 4d 5f 40 23 41 | 2f 42 34 21 3d 3b 32 29 |GLVM_@#A|/B4!=;2)|
|000060c0| 27 39 41 49 25 38 21 39 | 22 38 41 49 23 36 31 30 |'9AI%8!9|"8AI#610|
|000060d0| 5c 37 31 34 5c 0a 58 4d | 3b 32 39 2b 3b 32 31 28 |\714\.XM|;29+;21(|
|000060e0| 36 31 24 50 38 51 48 56 | 42 54 21 38 4c 56 3d 5c |61$P8QHV|BT!8LV=\|
|000060f0| 4f 27 25 5f 4e 46 55 56 | 4e 26 51 4f 50 57 41 56 |O'%_NFUV|N&QOPWAV|
|00006100| 3c 54 35 5d 41 35 36 2e | 43 55 56 35 49 37 2a 46 |<T5]A56.|CUV5I7*F|
|00006110| 41 55 22 23 0a 58 4d 3a | 53 21 41 39 52 41 36 3a |AU"#.XM:|S!A9RA6:|
|00006120| 22 39 33 35 31 24 5d 36 | 41 30 5f 37 41 38 5f 37 |"9351$]6|A0_7A8_7|
|00006130| 21 30 5d 36 51 2c 5e 37 | 41 39 21 38 21 41 23 37 |!0]6Q,^7|A9!8!A#7|
|00006140| 41 41 26 35 41 21 25 39 | 42 21 35 34 20 48 58 34 |AA&5A!%9|B!54 HX4|
|00006150| 40 3c 4f 0a 58 4d 34 50 | 34 46 41 23 2d 2b 53 37 |@<O.XM4P|4FA#-+S7|
|00006160| 52 2a 4a 25 41 3e 4d 46 | 45 48 57 59 36 2f 57 29 |R*J%A>MF|EHWY6/W)|
|00006170| 46 31 56 29 56 32 57 2a | 3a 3b 57 5b 2a 44 5f 3d |F1V)V2W*|:;W[*D_=|
|00006180| 33 27 57 4a 4e 41 4a 45 | 41 3b 47 43 51 24 49 23 |3'WJNAJE|A;GCQ$I#|
|00006190| 3d 21 0a 58 4d 50 34 51 | 36 54 45 35 41 56 25 45 |=!.XMP4Q|6TE5AV%E|
|000061a0| 43 57 56 21 4a 58 56 45 | 4f 58 57 29 55 57 57 39 |CWV!JXVE|OXW)UWW9|
|000061b0| 56 57 37 41 57 57 57 51 | 5d 58 37 59 5f 58 57 56 |VW7AWWWQ|]X7Y_XWV|
|000061c0| 21 59 27 49 5f 58 47 41 | 5d 55 57 31 55 53 56 59 |!Y'I_XGA|]UW1USVY|
|000061d0| 4c 0a 58 4d 55 37 29 53 | 56 57 35 59 55 46 59 54 |L.XMU7)S|VW5YUFYT|
|000061e0| 55 36 5d 56 56 37 3d 5f | 55 47 42 21 56 27 5a 27 |U6]VV7=_|UGB!V'Z'|
|000061f0| 55 47 5e 27 57 38 46 30 | 58 38 4a 32 57 28 2a 2a |UG^'W8F0|X8J2W(**|
|00006200| 58 58 36 2c 5a 28 3a 2e | 59 47 46 23 55 45 4d 44 |XX6,Z(:.|YGF#UEMD|
|00006210| 0a 58 4d 57 45 5d 47 56 | 56 3d 4b 55 56 3d 4a 54 |.XMWE]GV|V=KUV=JT|
|00006220| 35 5d 45 53 55 49 43 55 | 55 51 48 56 46 25 4d 59 |5]ESUICU|UQHVF%MY|
|00006230| 27 46 22 5a 29 22 35 5a | 3a 4a 49 5d 2c 32 5e 5f |'F"Z)"5Z|:JI],2^_|
|00006240| 3d 2f 2c 5c 3c 2e 5d 58 | 2a 3a 44 58 49 4e 3a 0a |=/,\<.]X|*:DXIN:.|
|00006250| 58 4d 59 38 5a 2d 58 38 | 2a 21 57 37 56 20 56 27 |XMY8Z-X8|*!W7V V'|
|00006260| 31 5b 53 36 39 50 52 46 | 25 4e 52 35 59 49 4f 55 |1[S69PRF|%NR5YIOU|
|00006270| 29 3c 4d 54 4d 32 4d 54 | 4d 31 4f 35 25 38 4c 54 |)<MTM2MT|M1O5%8LT|
|00006280| 41 33 4a 54 25 32 47 23 | 25 2a 40 41 40 57 0a 58 |A3JT%2G#|%*@A@W.X|
|00006290| 4d 41 22 29 24 38 51 20 | 53 36 30 58 55 3a 21 55 |MA")$8Q |S60XU:!U|
|000062a0| 25 3a 31 59 26 3e 32 59 | 36 3c 32 39 2d 38 31 3c |%:1Y&>2Y|6<29-81<|
|000062b0| 57 47 35 31 50 55 38 56 | 42 57 59 3e 4b 4e 37 26 |WG51PU8V|BWY>KN7&|
|000062c0| 25 40 53 4d 32 3f 53 39 | 33 3b 52 31 29 0a 58 4d |%@SM2?S9|3;R1).XM|
|000062d0| 38 41 39 21 38 51 45 25 | 37 51 3d 20 36 31 30 5c |8A9!8QE%|7Q= 610\|
|000062e0| 37 41 38 5d 3a 52 31 29 | 3a 32 21 24 35 50 54 4d |7A8]:R1)|:2!$5PTM|
|000062f0| 3a 21 50 59 45 34 49 42 | 4e 46 5a 21 4f 37 29 5e |:!PYE4IB|NFZ!O7)^|
|00006300| 4e 36 51 53 4e 46 59 51 | 51 57 51 58 0a 58 4d 40 |N6QSNFYQ|QWQX.XM@|
|00006310| 55 36 2d 3f 54 5e 28 3c | 23 59 56 42 45 3e 2b 3b |U6-?T^(<|#YVBE>+;|
|00006320| 53 41 4b 41 54 51 5d 39 | 52 41 38 37 31 4d 28 35 |SAKATQ]9|RA871M(5|
|00006330| 21 20 5c 36 51 35 20 37 | 41 38 5f 36 41 28 5b 36 |! \6Q5 7|A8_6A([6|
|00006340| 31 24 5a 37 41 38 5f 38 | 41 49 25 0a 58 4d 37 51 |1$Z7A8_8|AI%.XM7Q|
|00006350| 45 27 36 51 35 2d 37 51 | 45 31 36 51 25 23 33 50 |E'6Q5-7Q|E16Q%#3P|
|00006360| 2c 4e 3c 52 29 22 4c 36 | 25 55 4f 46 59 58 48 25 |,N<R)"L6|%UOFYXH%|
|00006370| 25 33 52 37 55 58 5a 5a | 26 37 59 2a 26 35 59 3a |%3R7UXZZ|&7Y*&5Y:|
|00006380| 4a 3d 55 5a 32 37 5d 2c | 3e 5b 0a 58 4d 5c 4c 4e |J=UZ27],|>[.XM\LN|
|00006390| 5f 48 46 49 46 42 52 48 | 52 4e 54 35 34 4f 24 35 |_HFIFBRH|RNT54O$5|
|000063a0| 32 4f 34 31 30 55 45 59 | 48 55 35 55 45 53 55 41 |2O410UEY|HU5UESUA|
|000063b0| 3d 5a 27 25 54 5a 27 31 | 56 59 57 39 57 59 57 49 |=Z'%TZ'1|VYW9WYWI|
|000063c0| 5a 5a 38 22 20 5a 58 32 | 24 0a 58 4d 5a 38 3a 27 |ZZ8" ZX2|$.XMZ8:'|
|000063d0| 5a 28 36 26 59 28 2e 23 | 5b 39 26 2b 58 28 39 5d |Z(6&Y(.#|[9&+X(9]|
|000063e0| 58 58 31 5f 59 58 36 23 | 58 37 4d 5f 58 47 52 21 |XX1_YX6#|X7M_XGR!|
|000063f0| 5a 58 3e 30 5b 38 52 36 | 5a 49 22 38 59 28 5a 34 |ZX>0[8R6|ZI"8Y(Z4|
+--------+-------------------------+-------------------------+--------+--------+