/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* 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 Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#import "OFStream.h"
#import "OFHuffmanTree.h"
OF_ASSUME_NONNULL_BEGIN
#define OFLHADecompressingStreamBufferSize 4096
OF_DIRECT_MEMBERS
@interface OFLHADecompressingStream: OFStream
{
OFStream *_stream;
uint8_t _distanceBits, _dictionaryBits;
unsigned char _buffer[OFLHADecompressingStreamBufferSize];
uint32_t _bytesConsumed;
uint16_t _bufferIndex, _bufferLength;
uint8_t _byte;
uint8_t _bitIndex, _savedBitsLength;
uint16_t _savedBits;
unsigned char *_slidingWindow;
uint32_t _slidingWindowIndex, _slidingWindowMask;
int _state;
uint16_t _symbolsLeft;
OFHuffmanTree _Nullable _codeLenTree;
OFHuffmanTree _Nullable _litLenTree;
OFHuffmanTree _Nullable _distTree;
OFHuffmanTree _Nullable _treeIter;
uint16_t _codesCount, _codesReceived;
bool _currentIsExtendedLength, _skip;
uint8_t *_Nullable _codesLengths;
uint16_t _length;
uint32_t _distance;
}
@property (readonly, nonatomic) uint32_t bytesConsumed;
- (instancetype)of_initWithStream: (OFStream *)stream
distanceBits: (uint8_t)distanceBits
dictionaryBits: (uint8_t)dictionaryBits;
@end
OF_ASSUME_NONNULL_END