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Huffman.pas
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(*
* File: $RCSfile: Huffman.pas,v $
* Revision: $Revision: 1.1.1.1 $
* Version : $Id: Huffman.pas,v 1.1.1.1 2002/04/21 12:57:17 fobmagog Exp $
* Author: $Author: fobmagog $
* Homepage: http://delphimpeg.sourceforge.net/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*)
unit Huffman;
{$mode delphi}
interface
uses
BitReserve;
type
PHuffBits = ^THuffBits;
THuffBits = Cardinal;
const
HTN = 34;
MXOFF = 250;
type
PHTArray = ^THTArray;
THTArray = array[0..1] of byte;
PPHTArray = ^TPHTArray;
TPHTArray = array[0..511] of THTArray; //DP set to max length of huff tables
PHuffCodeTab = ^THuffCodeTab;
THuffCodeTab = record
table_number: byte;
xlen: Cardinal; // max. x-index+
ylen: Cardinal; // max. y-index+
linbits: Cardinal; // number of linbits, max number to be stored in linbits = (1 << linbits) - 1
val: PPHTArray; // decoder tree
treelen: Cardinal; // length of decoder tree
end;
var
// array of all huffcodtable headers
// 0..31 Huffman code table 0..31
// 32,33 count1-tables
g_hufftables: array[0..HTN-1] of THuffCodeTab;
procedure HuffmanDecoder(h: PHuffCodeTab; var x, y, v, w: Integer; br: TBitReserve);
implementation
const
dmask: THuffBits = THuffBits(1 shl ((sizeof(THuffBits) * 8) - 1));
ValTab0: array[0..0] of THTArray = (
(0,0)); // dummy
ValTab1: array[0..6] of THTArray = (
(2,1),(0,0),(2,1),(0,16),(2,1),(0,1),(0,17));
ValTab2: array[0..16] of THTArray = (
(2,1),(0,0),(4,1),(2,1),(0,16),(0,1),(2,1),(0,17),(4,1),(2,1),
(0,32),(0,33),(2,1),(0,18),(2,1),(0,2),(0,34));
ValTab3: array[0..16] of THTArray = (
(4,1),(2,1),(0,0),(0,1),(2,1),(0,17),(2,1),(0,16),(4,1),(2,1),
(0,32),(0,33),(2,1),(0,18),(2,1),(0,2),(0,34));
ValTab4: array[0..0] of THTArray = (
(0,0)); // dummy
ValTab5: array[0..30] of THTArray = (
(2,1),(0,0),(4,1),(2,1),(0,16),(0,1),(2,1),(0,17),(8,1),(4,1),
(2,1),(0,32),(0,2),(2,1),(0,33),(0,18),(8,1),(4,1),(2,1),(0,34),
(0,48),(2,1),(0,3),(0,19),(2,1),(0,49),(2,1),(0,50),(2,1),(0,35),
(0,51));
ValTab6: array[0..30] of THTArray = (
(6,1),(4,1),(2,1),(0,0),(0,16),(0,17),(6,1),(2,1),(0,1),(2,1),
(0,32),(0,33),(6,1),(2,1),(0,18),(2,1),(0,2),(0,34),(4,1),(2,1),
(0,49),(0,19),(4,1),(2,1),(0,48),(0,50),(2,1),(0,35),(2,1),(0,3),
(0,51));
ValTab7: array[0..70] of THTArray = (
(2,1),(0,0),(4,1),(2,1),(0,16),(0,1),(8,1),(2,1),(0,17),(4,1),
(2,1),(0,32),(0,2),(0,33),(18,1),(6,1),(2,1),(0,18),(2,1),(0,34),
(0,48),(4,1),(2,1),(0,49),(0,19),(4,1),(2,1),(0,3),(0,50),(2,1),
(0,35),(0,4),(10,1),(4,1),(2,1),(0,64),(0,65),(2,1),(0,20),(2,1),
(0,66),(0,36),(12,1),(6,1),(4,1),(2,1),(0,51),(0,67),(0,80),(4,1),
(2,1),(0,52),(0,5),(0,81),(6,1),(2,1),(0,21),(2,1),(0,82),(0,37),
(4,1),(2,1),(0,68),(0,53),(4,1),(2,1),(0,83),(0,84),(2,1),(0,69),
(0,85));
ValTab8: array[0..70] of THTArray = (
(6,1),(2,1),(0,0),(2,1),(0,16),(0,1),(2,1),(0,17),(4,1),(2,1),
(0,33),(0,18),(14,1),(4,1),(2,1),(0,32),(0,2),(2,1),(0,34),(4,1),
(2,1),(0,48),(0,3),(2,1),(0,49),(0,19),(14,1),(8,1),(4,1),(2,1),
(0,50),(0,35),(2,1),(0,64),(0,4),(2,1),(0,65),(2,1),(0,20),(0,66),
(12,1),(6,1),(2,1),(0,36),(2,1),(0,51),(0,80),(4,1),(2,1),(0,67),
(0,52),(0,81),(6,1),(2,1),(0,21),(2,1),(0,5),(0,82),(6,1),(2,1),
(0,37),(2,1),(0,68),(0,53),(2,1),(0,83),(2,1),(0,69),(2,1),(0,84),
(0,85));
ValTab9: array[0..70] of THTArray = (
(8,1),(4,1),(2,1),(0,0),(0,16),(2,1),(0,1),(0,17),(10,1),(4,1),
(2,1),(0,32),(0,33),(2,1),(0,18),(2,1),(0,2),(0,34),(12,1),(6,1),
(4,1),(2,1),(0,48),(0,3),(0,49),(2,1),(0,19),(2,1),(0,50),(0,35),
(12,1),(4,1),(2,1),(0,65),(0,20),(4,1),(2,1),(0,64),(0,51),(2,1),
(0,66),(0,36),(10,1),(6,1),(4,1),(2,1),(0,4),(0,80),(0,67),(2,1),
(0,52),(0,81),(8,1),(4,1),(2,1),(0,21),(0,82),(2,1),(0,37),(0,68),
(6,1),(4,1),(2,1),(0,5),(0,84),(0,83),(2,1),(0,53),(2,1),(0,69),
(0,85));
ValTab10: array[0..126] of THTArray = (
(2,1),(0,0),(4,1),(2,1),(0,16),(0,1),(10,1),(2,1),(0,17),(4,1),
(2,1),(0,32),(0,2),(2,1),(0,33),(0,18),(28,1),(8,1),(4,1),(2,1),
(0,34),(0,48),(2,1),(0,49),(0,19),(8,1),(4,1),(2,1),(0,3),(0,50),
(2,1),(0,35),(0,64),(4,1),(2,1),(0,65),(0,20),(4,1),(2,1),(0,4),
(0,51),(2,1),(0,66),(0,36),(28,1),(10,1),(6,1),(4,1),(2,1),(0,80),
(0,5),(0,96),(2,1),(0,97),(0,22),(12,1),(6,1),(4,1),(2,1),(0,67),
(0,52),(0,81),(2,1),(0,21),(2,1),(0,82),(0,37),(4,1),(2,1),(0,38),
(0,54),(0,113),(20,1),(8,1),(2,1),(0,23),(4,1),(2,1),(0,68),(0,83),
(0,6),(6,1),(4,1),(2,1),(0,53),(0,69),(0,98),(2,1),(0,112),(2,1),
(0,7),(0,100),(14,1),(4,1),(2,1),(0,114),(0,39),(6,1),(2,1),(0,99),
(2,1),(0,84),(0,85),(2,1),(0,70),(0,115),(8,1),(4,1),(2,1),(0,55),
(0,101),(2,1),(0,86),(0,116),(6,1),(2,1),(0,71),(2,1),(0,102),(0,117),
(4,1),(2,1),(0,87),(0,118),(2,1),(0,103),(0,119));
ValTab11: array[0..126] of THTArray = (
(6,1),(2,1),(0,0),(2,1),(0,16),(0,1),(8,1),(2,1),(0,17),(4,1),
(2,1),(0,32),(0,2),(0,18),(24,1),(8,1),(2,1),(0,33),(2,1),(0,34),
(2,1),(0,48),(0,3),(4,1),(2,1),(0,49),(0,19),(4,1),(2,1),(0,50),
(0,35),(4,1),(2,1),(0,64),(0,4),(2,1),(0,65),(0,20),(30,1),(16,1),
(10,1),(4,1),(2,1),(0,66),(0,36),(4,1),(2,1),(0,51),(0,67),(0,80),
(4,1),(2,1),(0,52),(0,81),(0,97),(6,1),(2,1),(0,22),(2,1),(0,6),
(0,38),(2,1),(0,98),(2,1),(0,21),(2,1),(0,5),(0,82),(16,1),(10,1),
(6,1),(4,1),(2,1),(0,37),(0,68),(0,96),(2,1),(0,99),(0,54),(4,1),
(2,1),(0,112),(0,23),(0,113),(16,1),(6,1),(4,1),(2,1),(0,7),(0,100),
(0,114),(2,1),(0,39),(4,1),(2,1),(0,83),(0,53),(2,1),(0,84),(0,69),
(10,1),(4,1),(2,1),(0,70),(0,115),(2,1),(0,55),(2,1),(0,101),(0,86),
(10,1),(6,1),(4,1),(2,1),(0,85),(0,87),(0,116),(2,1),(0,71),(0,102),
(4,1),(2,1),(0,117),(0,118),(2,1),(0,103),(0,119));
ValTab12: array[0..126] of THTArray = (
(12,1),(4,1),(2,1),(0,16),(0,1),(2,1),(0,17),(2,1),(0,0),(2,1),
(0,32),(0,2),(16,1),(4,1),(2,1),(0,33),(0,18),(4,1),(2,1),(0,34),
(0,49),(2,1),(0,19),(2,1),(0,48),(2,1),(0,3),(0,64),(26,1),(8,1),
(4,1),(2,1),(0,50),(0,35),(2,1),(0,65),(0,51),(10,1),(4,1),(2,1),
(0,20),(0,66),(2,1),(0,36),(2,1),(0,4),(0,80),(4,1),(2,1),(0,67),
(0,52),(2,1),(0,81),(0,21),(28,1),(14,1),(8,1),(4,1),(2,1),(0,82),
(0,37),(2,1),(0,83),(0,53),(4,1),(2,1),(0,96),(0,22),(0,97),(4,1),
(2,1),(0,98),(0,38),(6,1),(4,1),(2,1),(0,5),(0,6),(0,68),(2,1),
(0,84),(0,69),(18,1),(10,1),(4,1),(2,1),(0,99),(0,54),(4,1),(2,1),
(0,112),(0,7),(0,113),(4,1),(2,1),(0,23),(0,100),(2,1),(0,70),(0,114),
(10,1),(6,1),(2,1),(0,39),(2,1),(0,85),(0,115),(2,1),(0,55),(0,86),
(8,1),(4,1),(2,1),(0,101),(0,116),(2,1),(0,71),(0,102),(4,1),(2,1),
(0,117),(0,87),(2,1),(0,118),(2,1),(0,103),(0,119));
ValTab13: array[0..510] of THTArray = (
(2,1),(0,0),(6,1),(2,1),(0,16),(2,1),(0,1),(0,17),(28,1),(8,1),
(4,1),(2,1),(0,32),(0,2),(2,1),(0,33),(0,18),(8,1),(4,1),(2,1),
(0,34),(0,48),(2,1),(0,3),(0,49),(6,1),(2,1),(0,19),(2,1),(0,50),
(0,35),(4,1),(2,1),(0,64),(0,4),(0,65),(70,1),(28,1),(14,1),(6,1),
(2,1),(0,20),(2,1),(0,51),(0,66),(4,1),(2,1),(0,36),(0,80),(2,1),
(0,67),(0,52),(4,1),(2,1),(0,81),(0,21),(4,1),(2,1),(0,5),(0,82),
(2,1),(0,37),(2,1),(0,68),(0,83),(14,1),(8,1),(4,1),(2,1),(0,96),
(0,6),(2,1),(0,97),(0,22),(4,1),(2,1),(0,128),(0,8),(0,129),(16,1),
(8,1),(4,1),(2,1),(0,53),(0,98),(2,1),(0,38),(0,84),(4,1),(2,1),
(0,69),(0,99),(2,1),(0,54),(0,112),(6,1),(4,1),(2,1),(0,7),(0,85),
(0,113),(2,1),(0,23),(2,1),(0,39),(0,55),(72,1),(24,1),(12,1),(4,1),
(2,1),(0,24),(0,130),(2,1),(0,40),(4,1),(2,1),(0,100),(0,70),(0,114),
(8,1),(4,1),(2,1),(0,132),(0,72),(2,1),(0,144),(0,9),(2,1),(0,145),
(0,25),(24,1),(14,1),(8,1),(4,1),(2,1),(0,115),(0,101),(2,1),(0,86),
(0,116),(4,1),(2,1),(0,71),(0,102),(0,131),(6,1),(2,1),(0,56),(2,1),
(0,117),(0,87),(2,1),(0,146),(0,41),(14,1),(8,1),(4,1),(2,1),(0,103),
(0,133),(2,1),(0,88),(0,57),(2,1),(0,147),(2,1),(0,73),(0,134),(6,1),
(2,1),(0,160),(2,1),(0,104),(0,10),(2,1),(0,161),(0,26),(68,1),(24,1),
(12,1),(4,1),(2,1),(0,162),(0,42),(4,1),(2,1),(0,149),(0,89),(2,1),
(0,163),(0,58),(8,1),(4,1),(2,1),(0,74),(0,150),(2,1),(0,176),(0,11),
(2,1),(0,177),(0,27),(20,1),(8,1),(2,1),(0,178),(4,1),(2,1),(0,118),
(0,119),(0,148),(6,1),(4,1),(2,1),(0,135),(0,120),(0,164),(4,1),(2,1),
(0,105),(0,165),(0,43),(12,1),(6,1),(4,1),(2,1),(0,90),(0,136),(0,179),
(2,1),(0,59),(2,1),(0,121),(0,166),(6,1),(4,1),(2,1),(0,106),(0,180),
(0,192),(4,1),(2,1),(0,12),(0,152),(0,193),(60,1),(22,1),(10,1),(6,1),
(2,1),(0,28),(2,1),(0,137),(0,181),(2,1),(0,91),(0,194),(4,1),(2,1),
(0,44),(0,60),(4,1),(2,1),(0,182),(0,107),(2,1),(0,196),(0,76),(16,1),
(8,1),(4,1),(2,1),(0,168),(0,138),(2,1),(0,208),(0,13),(2,1),(0,209),
(2,1),(0,75),(2,1),(0,151),(0,167),(12,1),(6,1),(2,1),(0,195),(2,1),
(0,122),(0,153),(4,1),(2,1),(0,197),(0,92),(0,183),(4,1),(2,1),(0,29),
(0,210),(2,1),(0,45),(2,1),(0,123),(0,211),(52,1),(28,1),(12,1),(4,1),
(2,1),(0,61),(0,198),(4,1),(2,1),(0,108),(0,169),(2,1),(0,154),(0,212),
(8,1),(4,1),(2,1),(0,184),(0,139),(2,1),(0,77),(0,199),(4,1),(2,1),
(0,124),(0,213),(2,1),(0,93),(0,224),(10,1),(4,1),(2,1),(0,225),(0,30),
(4,1),(2,1),(0,14),(0,46),(0,226),(8,1),(4,1),(2,1),(0,227),(0,109),
(2,1),(0,140),(0,228),(4,1),(2,1),(0,229),(0,186),(0,240),(38,1),(16,1),
(4,1),(2,1),(0,241),(0,31),(6,1),(4,1),(2,1),(0,170),(0,155),(0,185),
(2,1),(0,62),(2,1),(0,214),(0,200),(12,1),(6,1),(2,1),(0,78),(2,1),
(0,215),(0,125),(2,1),(0,171),(2,1),(0,94),(0,201),(6,1),(2,1),(0,15),
(2,1),(0,156),(0,110),(2,1),(0,242),(0,47),(32,1),(16,1),(6,1),(4,1),
(2,1),(0,216),(0,141),(0,63),(6,1),(2,1),(0,243),(2,1),(0,230),(0,202),
(2,1),(0,244),(0,79),(8,1),(4,1),(2,1),(0,187),(0,172),(2,1),(0,231),
(0,245),(4,1),(2,1),(0,217),(0,157),(2,1),(0,95),(0,232),(30,1),(12,1),
(6,1),(2,1),(0,111),(2,1),(0,246),(0,203),(4,1),(2,1),(0,188),(0,173),
(0,218),(8,1),(2,1),(0,247),(4,1),(2,1),(0,126),(0,127),(0,142),(6,1),
(4,1),(2,1),(0,158),(0,174),(0,204),(2,1),(0,248),(0,143),(18,1),(8,1),
(4,1),(2,1),(0,219),(0,189),(2,1),(0,234),(0,249),(4,1),(2,1),(0,159),
(0,235),(2,1),(0,190),(2,1),(0,205),(0,250),(14,1),(4,1),(2,1),(0,221),
(0,236),(6,1),(4,1),(2,1),(0,233),(0,175),(0,220),(2,1),(0,206),(0,251),
(8,1),(4,1),(2,1),(0,191),(0,222),(2,1),(0,207),(0,238),(4,1),(2,1),
(0,223),(0,239),(2,1),(0,255),(2,1),(0,237),(2,1),(0,253),(2,1),(0,252),
(0,254));
ValTab14: array[0..0] of THTArray = (
(0,0)); // dummy
ValTab15: array[0..510] of THTArray = (
(16,1),(6,1),(2,1),(0,0),(2,1),(0,16),(0,1),(2,1),(0,17),(4,1),
(2,1),(0,32),(0,2),(2,1),(0,33),(0,18),(50,1),(16,1),(6,1),(2,1),
(0,34),(2,1),(0,48),(0,49),(6,1),(2,1),(0,19),(2,1),(0,3),(0,64),
(2,1),(0,50),(0,35),(14,1),(6,1),(4,1),(2,1),(0,4),(0,20),(0,65),
(4,1),(2,1),(0,51),(0,66),(2,1),(0,36),(0,67),(10,1),(6,1),(2,1),
(0,52),(2,1),(0,80),(0,5),(2,1),(0,81),(0,21),(4,1),(2,1),(0,82),
(0,37),(4,1),(2,1),(0,68),(0,83),(0,97),(90,1),(36,1),(18,1),(10,1),
(6,1),(2,1),(0,53),(2,1),(0,96),(0,6),(2,1),(0,22),(0,98),(4,1),
(2,1),(0,38),(0,84),(2,1),(0,69),(0,99),(10,1),(6,1),(2,1),(0,54),
(2,1),(0,112),(0,7),(2,1),(0,113),(0,85),(4,1),(2,1),(0,23),(0,100),
(2,1),(0,114),(0,39),(24,1),(16,1),(8,1),(4,1),(2,1),(0,70),(0,115),
(2,1),(0,55),(0,101),(4,1),(2,1),(0,86),(0,128),(2,1),(0,8),(0,116),
(4,1),(2,1),(0,129),(0,24),(2,1),(0,130),(0,40),(16,1),(8,1),(4,1),
(2,1),(0,71),(0,102),(2,1),(0,131),(0,56),(4,1),(2,1),(0,117),(0,87),
(2,1),(0,132),(0,72),(6,1),(4,1),(2,1),(0,144),(0,25),(0,145),(4,1),
(2,1),(0,146),(0,118),(2,1),(0,103),(0,41),(92,1),(36,1),(18,1),(10,1),
(4,1),(2,1),(0,133),(0,88),(4,1),(2,1),(0,9),(0,119),(0,147),(4,1),
(2,1),(0,57),(0,148),(2,1),(0,73),(0,134),(10,1),(6,1),(2,1),(0,104),
(2,1),(0,160),(0,10),(2,1),(0,161),(0,26),(4,1),(2,1),(0,162),(0,42),
(2,1),(0,149),(0,89),(26,1),(14,1),(6,1),(2,1),(0,163),(2,1),(0,58),
(0,135),(4,1),(2,1),(0,120),(0,164),(2,1),(0,74),(0,150),(6,1),(4,1),
(2,1),(0,105),(0,176),(0,177),(4,1),(2,1),(0,27),(0,165),(0,178),(14,1),
(8,1),(4,1),(2,1),(0,90),(0,43),(2,1),(0,136),(0,151),(2,1),(0,179),
(2,1),(0,121),(0,59),(8,1),(4,1),(2,1),(0,106),(0,180),(2,1),(0,75),
(0,193),(4,1),(2,1),(0,152),(0,137),(2,1),(0,28),(0,181),(80,1),(34,1),
(16,1),(6,1),(4,1),(2,1),(0,91),(0,44),(0,194),(6,1),(4,1),(2,1),
(0,11),(0,192),(0,166),(2,1),(0,167),(0,122),(10,1),(4,1),(2,1),(0,195),
(0,60),(4,1),(2,1),(0,12),(0,153),(0,182),(4,1),(2,1),(0,107),(0,196),
(2,1),(0,76),(0,168),(20,1),(10,1),(4,1),(2,1),(0,138),(0,197),(4,1),
(2,1),(0,208),(0,92),(0,209),(4,1),(2,1),(0,183),(0,123),(2,1),(0,29),
(2,1),(0,13),(0,45),(12,1),(4,1),(2,1),(0,210),(0,211),(4,1),(2,1),
(0,61),(0,198),(2,1),(0,108),(0,169),(6,1),(4,1),(2,1),(0,154),(0,184),
(0,212),(4,1),(2,1),(0,139),(0,77),(2,1),(0,199),(0,124),(68,1),(34,1),
(18,1),(10,1),(4,1),(2,1),(0,213),(0,93),(4,1),(2,1),(0,224),(0,14),
(0,225),(4,1),(2,1),(0,30),(0,226),(2,1),(0,170),(0,46),(8,1),(4,1),
(2,1),(0,185),(0,155),(2,1),(0,227),(0,214),(4,1),(2,1),(0,109),(0,62),
(2,1),(0,200),(0,140),(16,1),(8,1),(4,1),(2,1),(0,228),(0,78),(2,1),
(0,215),(0,125),(4,1),(2,1),(0,229),(0,186),(2,1),(0,171),(0,94),(8,1),
(4,1),(2,1),(0,201),(0,156),(2,1),(0,241),(0,31),(6,1),(4,1),(2,1),
(0,240),(0,110),(0,242),(2,1),(0,47),(0,230),(38,1),(18,1),(8,1),(4,1),
(2,1),(0,216),(0,243),(2,1),(0,63),(0,244),(6,1),(2,1),(0,79),(2,1),
(0,141),(0,217),(2,1),(0,187),(0,202),(8,1),(4,1),(2,1),(0,172),(0,231),
(2,1),(0,126),(0,245),(8,1),(4,1),(2,1),(0,157),(0,95),(2,1),(0,232),
(0,142),(2,1),(0,246),(0,203),(34,1),(18,1),(10,1),(6,1),(4,1),(2,1),
(0,15),(0,174),(0,111),(2,1),(0,188),(0,218),(4,1),(2,1),(0,173),(0,247),
(2,1),(0,127),(0,233),(8,1),(4,1),(2,1),(0,158),(0,204),(2,1),(0,248),
(0,143),(4,1),(2,1),(0,219),(0,189),(2,1),(0,234),(0,249),(16,1),(8,1),
(4,1),(2,1),(0,159),(0,220),(2,1),(0,205),(0,235),(4,1),(2,1),(0,190),
(0,250),(2,1),(0,175),(0,221),(14,1),(6,1),(4,1),(2,1),(0,236),(0,206),
(0,251),(4,1),(2,1),(0,191),(0,237),(2,1),(0,222),(0,252),(6,1),(4,1),
(2,1),(0,207),(0,253),(0,238),(4,1),(2,1),(0,223),(0,254),(2,1),(0,239),
(0,255));
ValTab16: array[0..510] of THTArray = (
(2,1),(0,0),(6,1),(2,1),(0,16),(2,1),(0,1),(0,17),(42,1),(8,1),
(4,1),(2,1),(0,32),(0,2),(2,1),(0,33),(0,18),(10,1),(6,1),(2,1),
(0,34),(2,1),(0,48),(0,3),(2,1),(0,49),(0,19),(10,1),(4,1),(2,1),
(0,50),(0,35),(4,1),(2,1),(0,64),(0,4),(0,65),(6,1),(2,1),(0,20),
(2,1),(0,51),(0,66),(4,1),(2,1),(0,36),(0,80),(2,1),(0,67),(0,52),
(138,1),(40,1),(16,1),(6,1),(4,1),(2,1),(0,5),(0,21),(0,81),(4,1),
(2,1),(0,82),(0,37),(4,1),(2,1),(0,68),(0,53),(0,83),(10,1),(6,1),
(4,1),(2,1),(0,96),(0,6),(0,97),(2,1),(0,22),(0,98),(8,1),(4,1),
(2,1),(0,38),(0,84),(2,1),(0,69),(0,99),(4,1),(2,1),(0,54),(0,112),
(0,113),(40,1),(18,1),(8,1),(2,1),(0,23),(2,1),(0,7),(2,1),(0,85),
(0,100),(4,1),(2,1),(0,114),(0,39),(4,1),(2,1),(0,70),(0,101),(0,115),
(10,1),(6,1),(2,1),(0,55),(2,1),(0,86),(0,8),(2,1),(0,128),(0,129),
(6,1),(2,1),(0,24),(2,1),(0,116),(0,71),(2,1),(0,130),(2,1),(0,40),
(0,102),(24,1),(14,1),(8,1),(4,1),(2,1),(0,131),(0,56),(2,1),(0,117),
(0,132),(4,1),(2,1),(0,72),(0,144),(0,145),(6,1),(2,1),(0,25),(2,1),
(0,9),(0,118),(2,1),(0,146),(0,41),(14,1),(8,1),(4,1),(2,1),(0,133),
(0,88),(2,1),(0,147),(0,57),(4,1),(2,1),(0,160),(0,10),(0,26),(8,1),
(2,1),(0,162),(2,1),(0,103),(2,1),(0,87),(0,73),(6,1),(2,1),(0,148),
(2,1),(0,119),(0,134),(2,1),(0,161),(2,1),(0,104),(0,149),(220,1),(126,1),
(50,1),(26,1),(12,1),(6,1),(2,1),(0,42),(2,1),(0,89),(0,58),(2,1),
(0,163),(2,1),(0,135),(0,120),(8,1),(4,1),(2,1),(0,164),(0,74),(2,1),
(0,150),(0,105),(4,1),(2,1),(0,176),(0,11),(0,177),(10,1),(4,1),(2,1),
(0,27),(0,178),(2,1),(0,43),(2,1),(0,165),(0,90),(6,1),(2,1),(0,179),
(2,1),(0,166),(0,106),(4,1),(2,1),(0,180),(0,75),(2,1),(0,12),(0,193),
(30,1),(14,1),(6,1),(4,1),(2,1),(0,181),(0,194),(0,44),(4,1),(2,1),
(0,167),(0,195),(2,1),(0,107),(0,196),(8,1),(2,1),(0,29),(4,1),(2,1),
(0,136),(0,151),(0,59),(4,1),(2,1),(0,209),(0,210),(2,1),(0,45),(0,211),
(18,1),(6,1),(4,1),(2,1),(0,30),(0,46),(0,226),(6,1),(4,1),(2,1),
(0,121),(0,152),(0,192),(2,1),(0,28),(2,1),(0,137),(0,91),(14,1),(6,1),
(2,1),(0,60),(2,1),(0,122),(0,182),(4,1),(2,1),(0,76),(0,153),(2,1),
(0,168),(0,138),(6,1),(2,1),(0,13),(2,1),(0,197),(0,92),(4,1),(2,1),
(0,61),(0,198),(2,1),(0,108),(0,154),(88,1),(86,1),(36,1),(16,1),(8,1),
(4,1),(2,1),(0,139),(0,77),(2,1),(0,199),(0,124),(4,1),(2,1),(0,213),
(0,93),(2,1),(0,224),(0,14),(8,1),(2,1),(0,227),(4,1),(2,1),(0,208),
(0,183),(0,123),(6,1),(4,1),(2,1),(0,169),(0,184),(0,212),(2,1),(0,225),
(2,1),(0,170),(0,185),(24,1),(10,1),(6,1),(4,1),(2,1),(0,155),(0,214),
(0,109),(2,1),(0,62),(0,200),(6,1),(4,1),(2,1),(0,140),(0,228),(0,78),
(4,1),(2,1),(0,215),(0,229),(2,1),(0,186),(0,171),(12,1),(4,1),(2,1),
(0,156),(0,230),(4,1),(2,1),(0,110),(0,216),(2,1),(0,141),(0,187),(8,1),
(4,1),(2,1),(0,231),(0,157),(2,1),(0,232),(0,142),(4,1),(2,1),(0,203),
(0,188),(0,158),(0,241),(2,1),(0,31),(2,1),(0,15),(0,47),(66,1),(56,1),
(2,1),(0,242),(52,1),(50,1),(20,1),(8,1),(2,1),(0,189),(2,1),(0,94),
(2,1),(0,125),(0,201),(6,1),(2,1),(0,202),(2,1),(0,172),(0,126),(4,1),
(2,1),(0,218),(0,173),(0,204),(10,1),(6,1),(2,1),(0,174),(2,1),(0,219),
(0,220),(2,1),(0,205),(0,190),(6,1),(4,1),(2,1),(0,235),(0,237),(0,238),
(6,1),(4,1),(2,1),(0,217),(0,234),(0,233),(2,1),(0,222),(4,1),(2,1),
(0,221),(0,236),(0,206),(0,63),(0,240),(4,1),(2,1),(0,243),(0,244),(2,1),
(0,79),(2,1),(0,245),(0,95),(10,1),(2,1),(0,255),(4,1),(2,1),(0,246),
(0,111),(2,1),(0,247),(0,127),(12,1),(6,1),(2,1),(0,143),(2,1),(0,248),
(0,249),(4,1),(2,1),(0,159),(0,250),(0,175),(8,1),(4,1),(2,1),(0,251),
(0,191),(2,1),(0,252),(0,207),(4,1),(2,1),(0,253),(0,223),(2,1),(0,254),
(0,239));
ValTab24: array[0..511] of THTArray = (
(60,1),(8,1),(4,1),(2,1),(0,0),(0,16),(2,1),(0,1),(0,17),(14,1),
(6,1),(4,1),(2,1),(0,32),(0,2),(0,33),(2,1),(0,18),(2,1),(0,34),
(2,1),(0,48),(0,3),(14,1),(4,1),(2,1),(0,49),(0,19),(4,1),(2,1),
(0,50),(0,35),(4,1),(2,1),(0,64),(0,4),(0,65),(8,1),(4,1),(2,1),
(0,20),(0,51),(2,1),(0,66),(0,36),(6,1),(4,1),(2,1),(0,67),(0,52),
(0,81),(6,1),(4,1),(2,1),(0,80),(0,5),(0,21),(2,1),(0,82),(0,37),
(250,1),(98,1),(34,1),(18,1),(10,1),(4,1),(2,1),(0,68),(0,83),(2,1),
(0,53),(2,1),(0,96),(0,6),(4,1),(2,1),(0,97),(0,22),(2,1),(0,98),
(0,38),(8,1),(4,1),(2,1),(0,84),(0,69),(2,1),(0,99),(0,54),(4,1),
(2,1),(0,113),(0,85),(2,1),(0,100),(0,70),(32,1),(14,1),(6,1),(2,1),
(0,114),(2,1),(0,39),(0,55),(2,1),(0,115),(4,1),(2,1),(0,112),(0,7),
(0,23),(10,1),(4,1),(2,1),(0,101),(0,86),(4,1),(2,1),(0,128),(0,8),
(0,129),(4,1),(2,1),(0,116),(0,71),(2,1),(0,24),(0,130),(16,1),(8,1),
(4,1),(2,1),(0,40),(0,102),(2,1),(0,131),(0,56),(4,1),(2,1),(0,117),
(0,87),(2,1),(0,132),(0,72),(8,1),(4,1),(2,1),(0,145),(0,25),(2,1),
(0,146),(0,118),(4,1),(2,1),(0,103),(0,41),(2,1),(0,133),(0,88),(92,1),
(34,1),(16,1),(8,1),(4,1),(2,1),(0,147),(0,57),(2,1),(0,148),(0,73),
(4,1),(2,1),(0,119),(0,134),(2,1),(0,104),(0,161),(8,1),(4,1),(2,1),
(0,162),(0,42),(2,1),(0,149),(0,89),(4,1),(2,1),(0,163),(0,58),(2,1),
(0,135),(2,1),(0,120),(0,74),(22,1),(12,1),(4,1),(2,1),(0,164),(0,150),
(4,1),(2,1),(0,105),(0,177),(2,1),(0,27),(0,165),(6,1),(2,1),(0,178),
(2,1),(0,90),(0,43),(2,1),(0,136),(0,179),(16,1),(10,1),(6,1),(2,1),
(0,144),(2,1),(0,9),(0,160),(2,1),(0,151),(0,121),(4,1),(2,1),(0,166),
(0,106),(0,180),(12,1),(6,1),(2,1),(0,26),(2,1),(0,10),(0,176),(2,1),
(0,59),(2,1),(0,11),(0,192),(4,1),(2,1),(0,75),(0,193),(2,1),(0,152),
(0,137),(67,1),(34,1),(16,1),(8,1),(4,1),(2,1),(0,28),(0,181),(2,1),
(0,91),(0,194),(4,1),(2,1),(0,44),(0,167),(2,1),(0,122),(0,195),(10,1),
(6,1),(2,1),(0,60),(2,1),(0,12),(0,208),(2,1),(0,182),(0,107),(4,1),
(2,1),(0,196),(0,76),(2,1),(0,153),(0,168),(16,1),(8,1),(4,1),(2,1),
(0,138),(0,197),(2,1),(0,92),(0,209),(4,1),(2,1),(0,183),(0,123),(2,1),
(0,29),(0,210),(9,1),(4,1),(2,1),(0,45),(0,211),(2,1),(0,61),(0,198),
(85,250),(4,1),(2,1),(0,108),(0,169),(2,1),(0,154),(0,212),(32,1),(16,1),
(8,1),(4,1),(2,1),(0,184),(0,139),(2,1),(0,77),(0,199),(4,1),(2,1),
(0,124),(0,213),(2,1),(0,93),(0,225),(8,1),(4,1),(2,1),(0,30),(0,226),
(2,1),(0,170),(0,185),(4,1),(2,1),(0,155),(0,227),(2,1),(0,214),(0,109),
(20,1),(10,1),(6,1),(2,1),(0,62),(2,1),(0,46),(0,78),(2,1),(0,200),
(0,140),(4,1),(2,1),(0,228),(0,215),(4,1),(2,1),(0,125),(0,171),(0,229),
(10,1),(4,1),(2,1),(0,186),(0,94),(2,1),(0,201),(2,1),(0,156),(0,110),
(8,1),(2,1),(0,230),(2,1),(0,13),(2,1),(0,224),(0,14),(4,1),(2,1),
(0,216),(0,141),(2,1),(0,187),(0,202),(74,1),(2,1),(0,255),(64,1),(58,1),
(32,1),(16,1),(8,1),(4,1),(2,1),(0,172),(0,231),(2,1),(0,126),(0,217),
(4,1),(2,1),(0,157),(0,232),(2,1),(0,142),(0,203),(8,1),(4,1),(2,1),
(0,188),(0,218),(2,1),(0,173),(0,233),(4,1),(2,1),(0,158),(0,204),(2,1),
(0,219),(0,189),(16,1),(8,1),(4,1),(2,1),(0,234),(0,174),(2,1),(0,220),
(0,205),(4,1),(2,1),(0,235),(0,190),(2,1),(0,221),(0,236),(8,1),(4,1),
(2,1),(0,206),(0,237),(2,1),(0,222),(0,238),(0,15),(4,1),(2,1),(0,240),
(0,31),(0,241),(4,1),(2,1),(0,242),(0,47),(2,1),(0,243),(0,63),(18,1),
(8,1),(4,1),(2,1),(0,244),(0,79),(2,1),(0,245),(0,95),(4,1),(2,1),
(0,246),(0,111),(2,1),(0,247),(2,1),(0,127),(0,143),(10,1),(4,1),(2,1),
(0,248),(0,249),(4,1),(2,1),(0,159),(0,175),(0,250),(8,1),(4,1),(2,1),
(0,251),(0,191),(2,1),(0,252),(0,207),(4,1),(2,1),(0,253),(0,223),(2,1),
(0,254),(0,239));
ValTab32: array[0..30] of THTArray = (
(2,1),(0,0),(8,1),(4,1),(2,1),(0,8),(0,4),(2,1),(0,1),(0,2),
(8,1),(4,1),(2,1),(0,12),(0,10),(2,1),(0,3),(0,6),(6,1),(2,1),
(0,9),(2,1),(0,5),(0,7),(4,1),(2,1),(0,14),(0,13),(2,1),(0,15),
(0,11));
ValTab33: array[0..30] of THTArray = (
(16,1),(8,1),(4,1),(2,1),(0,0),(0,1),(2,1),(0,2),(0,3),(4,1),
(2,1),(0,4),(0,5),(2,1),(0,6),(0,7),(8,1),(4,1),(2,1),(0,8),
(0,9),(2,1),(0,10),(0,11),(4,1),(2,1),(0,12),(0,13),(2,1),(0,14),
(0,15));
procedure HuffmanDecoder(h: PHuffCodeTab; var x, y, v, w: Integer; br: TBitReserve);
var
level: THuffBits;
point: integer;
begin
Assert(h.val <> nil);
point := 0;
level := dmask;
// table 0 needs no bits
if (h.treelen = 0) then begin
x := 0;
y := 0;
//writeln(x, ':', y);
exit;
end;
// Lookup in Huffman table.
repeat
if (h.val[point, 0] = 0) then begin // end of tree
x := h.val[point, 1] shr 4;
y := h.val[point, 1] and $f;
break;
end;
if (br.hget1bit <> 0) then begin
while (h.val[point, 1] >= MXOFF) do
point := point + h.val[point, 1];
point := point + h.val[point, 1];
end else begin
while (h.val[point, 0] >= MXOFF) do
point := point + h.val[point, 0];
point := point + h.val[point, 0];
end;
level := level shr 1;
until level = 0;
v := 0;
w := 0;
// Process sign encodings for quadruples tables.
if (h.table_number >= 32) then begin
v := (y shr 3) and 1;
w := (y shr 2) and 1;
x := (y shr 1) and 1;
y := y and 1;
if (v <> 0) then
if (br.hget1bit <> 0) then
v := -v;
if (w <> 0) then
if (br.hget1bit <> 0) then
w := -w;
if (x <> 0) then
if (br.hget1bit <> 0) then
x := -x;
if (y <> 0) then
if (br.hget1bit <> 0) then
y := -y;
end else begin
// Process sign and escape encodings for dual tables.
if (h.linbits <> 0) then
if (Integer(h.xlen-1) = x) then
x := x + Integer(br.hgetbits(h.linbits));
if (x <> 0) then
if (br.hget1bit <> 0) then
x := -x;
if (h.linbits <> 0) then
if (Integer(h.ylen-1) = y) then
y := y + Integer(br.hgetbits(h.linbits));
if (y <> 0) then
if (br.hget1bit <> 0) then
y := -y;
end;
//write(format('%d:%d:%d:%d ', [x, y, v, w]));
//writeln(h.table_number);
end;
procedure SetHuffTable(table_num: integer; xlen, ylen, linbits: Integer;
val: PPHTArray; treelen: Cardinal);
var
h: PHuffCodeTab;
begin
h := @g_hufftables[table_num];
h.table_number := table_num;
h.xlen := xlen;
h.ylen := ylen;
h.linbits := linbits;
h.val := val;
h.treelen := treelen;
end;
begin
SetHuffTable(0, 0, 0, 0, @ValTab0, 0);
SetHuffTable(1, 2, 2, 0, @ValTab1, 7);
SetHuffTable(2, 3, 3, 0, @ValTab2, 17);
SetHuffTable(3, 3, 3, 0, @ValTab3, 17);
SetHuffTable(4, 0, 0, 0, @ValTab4, 0);
SetHuffTable(5, 4, 4, 0, @ValTab5, 31);
SetHuffTable(6, 4, 4, 0, @ValTab6, 31);
SetHuffTable(7, 6, 6, 0, @ValTab7, 71);
SetHuffTable(8, 6, 6, 0, @ValTab8, 71);
SetHuffTable(9, 6, 6, 0, @ValTab9, 71);
SetHuffTable(10, 8, 8, 0, @ValTab10, 127);
SetHuffTable(11, 8, 8, 0, @ValTab11, 127);
SetHuffTable(12, 8, 8, 0, @ValTab12, 127);
SetHuffTable(13, 16, 16, 0, @ValTab13, 511);
SetHuffTable(14, 0, 0, 0, @ValTab14, 0);
SetHuffTable(15, 16, 16, 0, @ValTab15, 511);
SetHuffTable(16, 16, 16, 1, @ValTab16, 511);
SetHuffTable(17, 16, 16, 2, @ValTab16, 511);
SetHuffTable(18, 16, 16, 3, @ValTab16, 511);
SetHuffTable(19, 16, 16, 4, @ValTab16, 511);
SetHuffTable(20, 16, 16, 6, @ValTab16, 511);
SetHuffTable(21, 16, 16, 8, @ValTab16, 511);
SetHuffTable(22, 16, 16, 10, @ValTab16, 511);
SetHuffTable(23, 16, 16, 13, @ValTab16, 511);
SetHuffTable(24, 16, 16, 4, @ValTab24, 512);
SetHuffTable(25, 16, 16, 5, @ValTab24, 512);
SetHuffTable(26, 16, 16, 6, @ValTab24, 512);
SetHuffTable(27, 16, 16, 7, @ValTab24, 512);
SetHuffTable(28, 16, 16, 8, @ValTab24, 512);
SetHuffTable(29, 16, 16, 9, @ValTab24, 512);
SetHuffTable(30, 16, 16, 11, @ValTab24, 512);
SetHuffTable(31, 16, 16, 13, @ValTab24, 512);
SetHuffTable(32, 1, 16, 0, @ValTab32, 31);
SetHuffTable(33, 1, 16, 0, @ValTab33, 31);
end.