#include <decompressor.h>
Public Member Functions | |
virtual int | unpack (Common::ReadStream *src, byte *dest, uint32 nPacked, uint32 nUnpacked) |
Protected Member Functions | |
virtual void | init (Common::ReadStream *src, byte *dest, uint32 nPacked, uint32 nUnpacked) |
uint32 | getBitsMSB (int n) |
uint32 | getBitsLSB (int n) |
byte | getByteMSB () |
byte | getByteLSB () |
void | fetchBitsMSB () |
void | fetchBitsLSB () |
virtual void | putByte (byte b) |
bool | isFinished () |
Protected Attributes | |
uint32 | _dwBits |
bits buffer | |
byte | _nBits |
number of unread bits in _dwBits | |
uint32 | _szPacked |
size of the compressed data | |
uint32 | _szUnpacked |
size of the decompressed data | |
uint32 | _dwRead |
number of bytes read from _src | |
uint32 | _dwWrote |
number of bytes written to _dest | |
Common::ReadStream * | _src |
byte * | _dest |
Base class for decompressors. Simply copies nPacked bytes from src to dest.
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protectedvirtual |
Initialize decompressor.
src | source stream to read from |
dest | destination stream to write to |
nPacked | size of packed data |
nUnpacket | size of unpacked data |
Reimplemented in Sci::DecompressorLZW.
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protected |
Get a number of bits from _src stream, starting with the most significant unread bit of the current four byte block.
n | number of bits to get |
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protected |
Get a number of bits from _src stream, starting with the least significant unread bit of the current four byte block.
n | number of bits to get |
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protected |
Get one byte from _src stream.
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protectedvirtual |
Write one byte into _dest stream
b | byte to put |
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inlineprotected |
Returns true if all expected data has been unpacked to _dest and there is no more data in _src.