diff options
| -rw-r--r-- | engines/cryo/LempelZiv.cpp | 7 | ||||
| -rw-r--r-- | engines/cryo/LempelZiv.h | 88 |
2 files changed, 0 insertions, 95 deletions
diff --git a/engines/cryo/LempelZiv.cpp b/engines/cryo/LempelZiv.cpp deleted file mode 100644 index ac2b5f0b6f..0000000000 --- a/engines/cryo/LempelZiv.cpp +++ /dev/null @@ -1,7 +0,0 @@ -#include "LempelZiv.h" - -namespace Cryo { - - - -}
\ No newline at end of file diff --git a/engines/cryo/LempelZiv.h b/engines/cryo/LempelZiv.h deleted file mode 100644 index fa683978de..0000000000 --- a/engines/cryo/LempelZiv.h +++ /dev/null @@ -1,88 +0,0 @@ -#pragma once - -namespace Cryo { - -class BitReaderBase { -public: - unsigned char *_data; //NB! never override this - used by decompressor - unsigned int _queue; - unsigned int _queueLeft; -public: - BitReaderBase(void *data, unsigned int dataSize = 0) { - _data = static_cast<unsigned char *>(data); - _queue = _queueLeft = 0; - } - - unsigned char GetBit() { - return 0; // to be overriden - } -}; - -// used to decompress HSQ files -class BitReader16 : BitReaderBase { -public: - unsigned char GetBit() { - if (!_queueLeft) { - _queue = (_data[1] << 8) | _data[0]; - _data += 2; - _queueLeft += 16; - } - unsigned char bit = _queue & 1; - _queue >>= 1; - _queueLeft--; - return bit; - } -}; - -// used by HNM decoder -class BitReader32 : BitReaderBase { -public: - unsigned char GetBit() { - if (!_queueLeft) { - _queue = (_data[3] << 24) | (_data[2] << 16) | (_data[1] << 8) | _data[0]; - _data += 4; - _queueLeft += 32; - } - unsigned char bit = (_queue >> (_queueLeft - 1)) & 1; - _queueLeft--; - return bit; - } -}; - -template <class BitReader> -class LempelZivBase : BitReader { -public: - LempelZivBase(void *input, unsigned int inputSize) : BitReader(input, inputSize) - - unsigned int UnpackBuffer(void *output, unsigned int maxOutputSize) { - unsigned char *out = static_cast<unsigned char *>(output); - for (;;) { - if (GetBit()) { - *out++ = *_data++; - } else { - int length, offset; - if (GetBit()) { - length = *_data & 7; - offset = ((_data[1] << 8) | _data[0]) >> 3; - _data += 2; - offset -= 8192; - if (!length) - length = *_data++; - if (!length) - break; - } else { - length = GetBit() * 2 + GetBit(); - offset = *(_data++) - 256; - } - length += 2; - while (length--) { - *out = *(out + offset); - out++; - } - } - } - return out - static_cast<unsigned char *>(output); - } -}; - -} |